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Re: Patch "dma-mapping: Allow use of DMA_BIT_MASK(64) in global scope" has been added to the 6.17-stable tree

by Nathan Chancellor

On Sun, Dec 07, 2025 at 10:07:49PM -0500, Sasha Levin wrote: > This is a note to let you know that I've just added the patch titled > > dma-mapping: Allow use of DMA_BIT_MASK(64) in global scope > > to the 6.17-stable tree which can be found at: > http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… > > The filename of the patch is: > dma-mapping-allow-use-of-dma_bit_mask-64-in-global-s.patch > and it can be found in the queue-6.17 subdirectory. > > If you, or anyone else, feels it should not be added to the stable tree, > please let <stable(a)vger.kernel.org> know about it. > > > > commit 51a1912d46ceb70602de50c167e440966b9836f1 > Author: James Clark <james.clark(a)linaro.org> > Date: Thu Oct 30 14:05:27 2025 +0000 > > dma-mapping: Allow use of DMA_BIT_MASK(64) in global scope > > [ Upstream commit a50f7456f853ec3a6f07cbe1d16ad8a8b2501320 ] This change has a pending bug fix, consider waiting to apply this to the stable trees. https://lore.kernel.org/20251207184756.97904-1-johannes.goede@oss.qualcomm.… Cheers, Nathan

1 week, 2 days

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[PATCH AUTOSEL 6.18-5.10] serial: sprd: Return -EPROBE_DEFER when uart clock is not ready

by Sasha Levin

From: Wenhua Lin <Wenhua.Lin(a)unisoc.com> [ Upstream commit 29e8a0c587e328ed458380a45d6028adf64d7487 ] In sprd_clk_init(), when devm_clk_get() returns -EPROBE_DEFER for either uart or source clock, we should propagate the error instead of just warning and continuing with NULL clocks. Currently the driver only emits a warning when clock acquisition fails and proceeds with NULL clock pointers. This can lead to issues later when the clocks are actually needed. More importantly, when the clock provider is not ready yet and returns -EPROBE_DEFER, we should return this error to allow deferred probing. This change adds explicit checks for -EPROBE_DEFER after both: 1. devm_clk_get(uport->dev, uart) 2. devm_clk_get(uport->dev, source) When -EPROBE_DEFER is encountered, the function now returns -EPROBE_DEFER to let the driver framework retry probing later when the clock dependencies are resolved. Signed-off-by: Wenhua Lin <Wenhua.Lin(a)unisoc.com> Link: https://patch.msgid.link/20251022030840.956589-1-Wenhua.Lin@unisoc.com Reviewed-by: Cixi Geng <cixi.geng(a)linux.dev> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- LLM Generated explanations, may be completely bogus: ## Commit Analysis: serial: sprd: Return -EPROBE_DEFER when uart clock is not ready ### 1. COMMIT MESSAGE ANALYSIS **Subject**: Fixes incorrect handling of `-EPROBE_DEFER` error from `devm_clk_get()` **Key observations**: - No `Cc: stable(a)vger.kernel.org` tag present - No `Fixes:` tag pointing to when the bug was introduced - Has `Reviewed-by:` from Cixi Geng - Accepted by Greg Kroah-Hartman (serial subsystem maintainer) ### 2. CODE CHANGE ANALYSIS The change adds two checks in `sprd_clk_init()`: ```c clk_uart = devm_clk_get(uport->dev, "uart"); if (IS_ERR(clk_uart)) { + if (PTR_ERR(clk_uart) == -EPROBE_DEFER) + return -EPROBE_DEFER; dev_warn(...); clk_uart = NULL; } clk_parent = devm_clk_get(uport->dev, "source"); if (IS_ERR(clk_parent)) { + if (PTR_ERR(clk_parent) == -EPROBE_DEFER) + return -EPROBE_DEFER; dev_warn(...); clk_parent = NULL; } ``` **Technical bug mechanism**: When clock providers aren't ready yet, `devm_clk_get()` returns `-EPROBE_DEFER`. The existing code ignores this error, sets the clock pointer to NULL, and continues. This bypasses the kernel's deferred probing mechanism which exists precisely to handle this dependency ordering scenario. **Existing pattern**: The function already has identical handling for the "enable" clock (visible in the context lines). This fix makes the handling consistent for all three clocks. ### 3. CLASSIFICATION **Type**: Bug fix (not a feature addition) This fixes incorrect error handling. The `-EPROBE_DEFER` mechanism is a fundamental kernel feature for handling driver load order dependencies. Not propagating this error is a bug. ### 4. SCOPE AND RISK ASSESSMENT - **Lines changed**: 6 lines added (two 3-line checks) - **Files touched**: 1 file (`drivers/tty/serial/sprd_serial.c`) - **Complexity**: Very low - follows identical pattern already in the same function - **Subsystem**: Hardware-specific serial driver for Spreadtrum/Unisoc UARTs **Risk**: Very low - Pattern is already established and proven in the same function - Only affects error handling during probe - No changes to normal operation when clocks are available - Worst case: probe failure happens earlier/more explicitly ### 5. USER IMPACT **Affected users**: Users of Spreadtrum/Unisoc UART hardware (embedded devices, some Android phones) **Severity**: Medium-High for affected users - without this fix, the serial port may not work correctly on systems where clock providers load after the serial driver. This is common in embedded systems with device tree-based configurations. **Real bug**: This is a practical issue in probe ordering scenarios. The driver would proceed with NULL clocks instead of waiting for dependencies to be ready. ### 6. STABILITY INDICATORS - Reviewed-by tag indicates code review - Maintainer accepted the change - Simple, straightforward change following existing code patterns - No complex logic introduced ### 7. DEPENDENCY CHECK - **Dependencies**: None - self-contained fix - **Code existence in stable**: The sprd_serial driver has existed since ~2015 (commit 3e1f2029a4b40), so it's present in all active stable trees ### SUMMARY **What it fixes**: Incorrect handling of `-EPROBE_DEFER` from `devm_clk_get()` for two clocks ("uart" and "source"), causing the driver to proceed with NULL clocks instead of deferring probe when clock providers aren't ready. **Stable kernel criteria**: - ✅ Obviously correct (follows identical pattern already in function) - ✅ Fixes a real bug (broken deferred probing) - ✅ Small and contained (6 lines, 1 file) - ✅ No new features - ✅ Low risk of regression **Concerns**: - No explicit `Cc: stable` tag (author/maintainer didn't flag for stable) - Relatively niche driver (Spreadtrum hardware) **Risk vs Benefit**: The fix is minimal risk (identical pattern to existing code) and addresses a real bug that could leave serial hardware non-functional on embedded systems. The benefit outweighs the minimal risk. The lack of `Cc: stable` tag is notable but not determinative - this is a straightforward bug fix that meets all stable criteria. The fix is small, obviously correct, and addresses a real probe ordering issue that embedded system users could encounter. **YES** drivers/tty/serial/sprd_serial.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/tty/serial/sprd_serial.c b/drivers/tty/serial/sprd_serial.c index 8c9366321f8e7..092755f356836 100644 --- a/drivers/tty/serial/sprd_serial.c +++ b/drivers/tty/serial/sprd_serial.c @@ -1133,6 +1133,9 @@ static int sprd_clk_init(struct uart_port *uport) clk_uart = devm_clk_get(uport->dev, "uart"); if (IS_ERR(clk_uart)) { + if (PTR_ERR(clk_uart) == -EPROBE_DEFER) + return -EPROBE_DEFER; + dev_warn(uport->dev, "uart%d can't get uart clock\n", uport->line); clk_uart = NULL; @@ -1140,6 +1143,9 @@ static int sprd_clk_init(struct uart_port *uport) clk_parent = devm_clk_get(uport->dev, "source"); if (IS_ERR(clk_parent)) { + if (PTR_ERR(clk_parent) == -EPROBE_DEFER) + return -EPROBE_DEFER; + dev_warn(uport->dev, "uart%d can't get source clock\n", uport->line); clk_parent = NULL; -- 2.51.0

1 week, 3 days

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[PATCH v2] media: dw2102: validate I2C messages in su3000_i2c_transfer()

by Dharanitharan R

syzbot reports a general protection fault caused by su3000_i2c_transfer() dereferencing msg->buf without validating the message length or buffer pointer. Although i2c-dev blocks zero-length messages, malformed I²C messages can still reach the driver through the DVB USB subsystem. Add strict validation of each message to prevent NULL-pointer dereferences. Reported-by: syzbot+d99f3a288cc7d8ef60fb(a)syzkaller.appspotmail.com Fixes: 0e148a522b84 ("media: dw2102: Don't translate i2c read into write") Closes: https://syzkaller.appspot.com/bug?extid=d99f3a288cc7d8ef60fb Cc: stable(a)vger.kernel.org Signed-off-by: Dharanitharan R <dharanitharan725(a)gmail.com> --- drivers/media/usb/dvb-usb/dw2102.c | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/drivers/media/usb/dvb-usb/dw2102.c b/drivers/media/usb/dvb-usb/dw2102.c index 4fecf2f965e9..0dd210ea16f3 100644 --- a/drivers/media/usb/dvb-usb/dw2102.c +++ b/drivers/media/usb/dvb-usb/dw2102.c @@ -733,6 +733,36 @@ static int su3000_i2c_transfer(struct i2c_adapter *adap, struct i2c_msg msg[], return -EAGAIN; } + /* Validate incoming I²C messages */ + if (!msg || num <= 0) { + mutex_unlock(&d->data_mutex); + mutex_unlock(&d->i2c_mutex); + return -EINVAL; + } + + for (j = 0; j < num; j++) { + /* msg buffer must exist */ + if (!msg[j].buf) { + mutex_unlock(&d->data_mutex); + mutex_unlock(&d->i2c_mutex); + return -EINVAL; + } + + /* zero or negative length is invalid */ + if (msg[j].len <= 0) { + mutex_unlock(&d->data_mutex); + mutex_unlock(&d->i2c_mutex); + return -EINVAL; + } + + /* protect against unreasonable sizes */ + if (msg[j].len > 256) { + mutex_unlock(&d->data_mutex); + mutex_unlock(&d->i2c_mutex); + return -EOPNOTSUPP; + } + } + j = 0; while (j < num) { switch (msg[j].addr) { -- 2.43.0

1 week, 3 days

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[PATCH v2] powerpc: Add reloc_offset() to font bitmap pointer used for bootx_printf()

by Finn Thain

Since Linux v6.7, booting using BootX on an Old World PowerMac produces an early crash. Stan Johnson writes, "the symptoms are that the screen goes blank and the backlight stays on, and the system freezes (Linux doesn't boot)." Further testing revealed that the failure can be avoided by disabling CONFIG_BOOTX_TEXT. Bisection revealed that the regression was caused by a change to the font bitmap pointer that's used when btext_init() begins painting characters on the display, early in the boot process. Christophe Leroy explains, "before kernel text is relocated to its final location ... data is addressed with an offset which is added to the Global Offset Table (GOT) entries at the start of bootx_init() by function reloc_got2(). But the pointers that are located inside a structure are not referenced in the GOT and are therefore not updated by reloc_got2(). It is therefore needed to apply the offset manually by using PTRRELOC() macro." Cc: Cedar Maxwell <cedarmaxwell(a)mac.com> Cc: Stan Johnson <userm57(a)yahoo.com> Cc: "Dr. David Alan Gilbert" <linux(a)treblig.org> Cc: Benjamin Herrenschmidt <benh(a)kernel.crashing.org> Cc: stable(a)vger.kernel.org Link: https://lists.debian.org/debian-powerpc/2025/10/msg00111.html Link: https://lore.kernel.org/linuxppc-dev/d81ddca8-c5ee-d583-d579-02b19ed95301@y… Reported-by: Cedar Maxwell <cedarmaxwell(a)mac.com> Closes: https://lists.debian.org/debian-powerpc/2025/09/msg00031.html Bisected-by: Stan Johnson <userm57(a)yahoo.com> Tested-by: Stan Johnson <userm57(a)yahoo.com> Fixes: 0ebc7feae79a ("powerpc: Use shared font data") Suggested-by: Christophe Leroy <christophe.leroy(a)csgroup.eu> Signed-off-by: Finn Thain <fthain(a)linux-m68k.org> --- Changed since v1: - Improved commit log entry to better explain the need for PTRRELOC(). --- arch/powerpc/kernel/btext.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/kernel/btext.c b/arch/powerpc/kernel/btext.c index 7f63f1cdc6c3..ca00c4824e31 100644 --- a/arch/powerpc/kernel/btext.c +++ b/arch/powerpc/kernel/btext.c @@ -20,6 +20,7 @@ #include <asm/io.h> #include <asm/processor.h> #include <asm/udbg.h> +#include <asm/setup.h> #define NO_SCROLL @@ -463,7 +464,7 @@ static noinline void draw_byte(unsigned char c, long locX, long locY) { unsigned char *base = calc_base(locX << 3, locY << 4); unsigned int font_index = c * 16; - const unsigned char *font = font_sun_8x16.data + font_index; + const unsigned char *font = PTRRELOC(font_sun_8x16.data) + font_index; int rb = dispDeviceRowBytes; rmci_maybe_on(); -- 2.49.1

1 week, 3 days

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[PATCH AUTOSEL 6.18-6.17] functionfs: fix the open/removal races

by Sasha Levin

From: Al Viro <viro(a)zeniv.linux.org.uk> [ Upstream commit e5bf5ee266633cb18fff6f98f0b7d59a62819eee ] ffs_epfile_open() can race with removal, ending up with file->private_data pointing to freed object. There is a total count of opened files on functionfs (both ep0 and dynamic ones) and when it hits zero, dynamic files get removed. Unfortunately, that removal can happen while another thread is in ffs_epfile_open(), but has not incremented the count yet. In that case open will succeed, leaving us with UAF on any subsequent read() or write(). The root cause is that ffs->opened is misused; atomic_dec_and_test() vs. atomic_add_return() is not a good idea, when object remains visible all along. To untangle that * serialize openers on ffs->mutex (both for ep0 and for dynamic files) * have dynamic ones use atomic_inc_not_zero() and fail if we had zero ->opened; in that case the file we are opening is doomed. * have the inodes of dynamic files marked on removal (from the callback of simple_recursive_removal()) - clear ->i_private there. * have open of dynamic ones verify they hadn't been already removed, along with checking that state is FFS_ACTIVE. Reviewed-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Al Viro <viro(a)zeniv.linux.org.uk> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- LLM Generated explanations, may be completely bogus: ## Summary ### What the Commit Fixes This commit fixes a **Use-After-Free (UAF)** vulnerability in USB gadget functionfs. The race condition occurs between `ffs_epfile_open()` and file removal: 1. Thread A is in `ffs_epfile_open()` but hasn't incremented `ffs->opened` yet 2. Thread B closes the last file handle, triggering removal (since `opened` is 0) 3. Thread A's open succeeds with `file->private_data` pointing to freed memory 4. Subsequent `read()`/`write()` operations cause UAF ### Fix Mechanism The fix implements proper synchronization: - Serializes openers using `ffs->mutex` - Uses `atomic_inc_not_zero()` to fail if counter already zero - Uses `smp_load_acquire()`/`smp_store_release()` for memory ordering - Clears `i_private` during removal via `simple_recursive_removal()` callback - Uses `file->private_data` instead of `inode->i_private` in release path ### Stable Kernel Criteria Assessment | Criterion | Assessment | |-----------|------------| | Obviously correct | ✅ Uses standard kernel primitives, proper locking patterns | | Fixes real bug | ✅ UAF vulnerability, security-relevant | | Important issue | ✅ Security bug, potential for crashes/exploitation | | Small and contained | ✅ Single file, +43/-10 lines, localized changes | | No new features | ✅ Pure bug fix, no new APIs | ### Risk vs Benefit **Benefits:** - Fixes serious UAF vulnerability - USB gadget functionfs used in Android, embedded systems - Reviewed by Greg Kroah-Hartman (USB maintainer, stable maintainer) - Written by Al Viro (highly respected kernel developer) **Risks:** - Moderate complexity (changes locking behavior) - Recent commit (November 2025), limited mainline soak time - No explicit `Cc: stable(a)vger.kernel.org` tag ### Dependencies - `ffs_mutex_lock()` - exists in functionfs since early versions - `simple_recursive_removal()` with callback - available since ~5.x kernels - Standard kernel APIs (`atomic_inc_not_zero`, memory barriers) - universally available ### Concerns 1. **No Fixes: tag** - Makes it harder to determine which stable trees need this fix 2. **No Cc: stable tag** - May indicate maintainers wanted soak time, or an oversight given Greg KH reviewed it 3. **Backport effort** - May need adjustment for older stable trees depending on functionfs evolution ### Conclusion This is a legitimate UAF security fix that affects real-world users (Android, embedded USB gadgets). Despite moderate complexity, the fix: - Addresses a serious vulnerability class (UAF) - Uses correct synchronization patterns - Has been reviewed by the appropriate maintainer who also maintains stable trees - Is self-contained with no feature additions The lack of explicit stable tags appears to be an oversight given the security nature of the bug and Greg KH's review. UAF vulnerabilities typically warrant expedited backporting. **YES** drivers/usb/gadget/function/f_fs.c | 53 ++++++++++++++++++++++++------ 1 file changed, 43 insertions(+), 10 deletions(-) diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c index 47cfbe41fdff8..69f6e3c0f7e00 100644 --- a/drivers/usb/gadget/function/f_fs.c +++ b/drivers/usb/gadget/function/f_fs.c @@ -640,13 +640,22 @@ static ssize_t ffs_ep0_read(struct file *file, char __user *buf, static int ffs_ep0_open(struct inode *inode, struct file *file) { - struct ffs_data *ffs = inode->i_private; + struct ffs_data *ffs = inode->i_sb->s_fs_info; + int ret; - if (ffs->state == FFS_CLOSING) - return -EBUSY; + /* Acquire mutex */ + ret = ffs_mutex_lock(&ffs->mutex, file->f_flags & O_NONBLOCK); + if (ret < 0) + return ret; - file->private_data = ffs; ffs_data_opened(ffs); + if (ffs->state == FFS_CLOSING) { + ffs_data_closed(ffs); + mutex_unlock(&ffs->mutex); + return -EBUSY; + } + mutex_unlock(&ffs->mutex); + file->private_data = ffs; return stream_open(inode, file); } @@ -1193,14 +1202,33 @@ static ssize_t ffs_epfile_io(struct file *file, struct ffs_io_data *io_data) static int ffs_epfile_open(struct inode *inode, struct file *file) { - struct ffs_epfile *epfile = inode->i_private; + struct ffs_data *ffs = inode->i_sb->s_fs_info; + struct ffs_epfile *epfile; + int ret; - if (WARN_ON(epfile->ffs->state != FFS_ACTIVE)) + /* Acquire mutex */ + ret = ffs_mutex_lock(&ffs->mutex, file->f_flags & O_NONBLOCK); + if (ret < 0) + return ret; + + if (!atomic_inc_not_zero(&ffs->opened)) { + mutex_unlock(&ffs->mutex); + return -ENODEV; + } + /* + * we want the state to be FFS_ACTIVE; FFS_ACTIVE alone is + * not enough, though - we might have been through FFS_CLOSING + * and back to FFS_ACTIVE, with our file already removed. + */ + epfile = smp_load_acquire(&inode->i_private); + if (unlikely(ffs->state != FFS_ACTIVE || !epfile)) { + mutex_unlock(&ffs->mutex); + ffs_data_closed(ffs); return -ENODEV; + } + mutex_unlock(&ffs->mutex); file->private_data = epfile; - ffs_data_opened(epfile->ffs); - return stream_open(inode, file); } @@ -1332,7 +1360,7 @@ static void ffs_dmabuf_put(struct dma_buf_attachment *attach) static int ffs_epfile_release(struct inode *inode, struct file *file) { - struct ffs_epfile *epfile = inode->i_private; + struct ffs_epfile *epfile = file->private_data; struct ffs_dmabuf_priv *priv, *tmp; struct ffs_data *ffs = epfile->ffs; @@ -2352,6 +2380,11 @@ static int ffs_epfiles_create(struct ffs_data *ffs) return 0; } +static void clear_one(struct dentry *dentry) +{ + smp_store_release(&dentry->d_inode->i_private, NULL); +} + static void ffs_epfiles_destroy(struct ffs_epfile *epfiles, unsigned count) { struct ffs_epfile *epfile = epfiles; @@ -2359,7 +2392,7 @@ static void ffs_epfiles_destroy(struct ffs_epfile *epfiles, unsigned count) for (; count; --count, ++epfile) { BUG_ON(mutex_is_locked(&epfile->mutex)); if (epfile->dentry) { - simple_recursive_removal(epfile->dentry, NULL); + simple_recursive_removal(epfile->dentry, clear_one); epfile->dentry = NULL; } } -- 2.51.0

1 week, 3 days

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[PATCH v2] pmdomain: imx: Fix reference count leak in imx_gpc_probe()

by Wentao Liang

of_get_child_by_name() returns a node pointer with refcount incremented, we should use the __free() attribute to manage the pgc_node reference. This ensures automatic of_node_put() cleanup when pgc_node goes out of scope, eliminating the need for explicit error handling paths and avoiding reference count leaks. Fixes: 721cabf6c660 ("soc: imx: move PGC handling to a new GPC driver") Cc: stable(a)vger.kernel.org Signed-off-by: Wentao Liang <vulab(a)iscas.ac.cn> --- Change in V2: - Use __free() attribute instead of explicit of_node_put() calls --- drivers/pmdomain/imx/gpc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/pmdomain/imx/gpc.c b/drivers/pmdomain/imx/gpc.c index f18c7e6e75dd..89d5d68c055d 100644 --- a/drivers/pmdomain/imx/gpc.c +++ b/drivers/pmdomain/imx/gpc.c @@ -403,7 +403,7 @@ static int imx_gpc_old_dt_init(struct device *dev, struct regmap *regmap, static int imx_gpc_probe(struct platform_device *pdev) { const struct imx_gpc_dt_data *of_id_data = device_get_match_data(&pdev->dev); - struct device_node *pgc_node; + struct device_node *pgc_node __free(pgc_node); struct regmap *regmap; void __iomem *base; int ret; -- 2.34.1

1 week, 3 days

3
2
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[PATCH] media: cx23885: Add missing unmap in snd_cx23885_hw_params()

by Haoxiang Li

In error path, add cx23885_alsa_dma_unmap() to release the resource acquired by cx23885_alsa_dma_map(). Fixes: 9529a4b0cf49 ("[media] cx23885: drop videobuf abuse in cx23885-alsa") Cc: stable(a)vger.kernel.org Signed-off-by: Haoxiang Li <lihaoxiang(a)isrc.iscas.ac.cn> --- drivers/media/pci/cx23885/cx23885-alsa.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/media/pci/cx23885/cx23885-alsa.c b/drivers/media/pci/cx23885/cx23885-alsa.c index 25dc8d4dc5b7..717fc6c9ef21 100644 --- a/drivers/media/pci/cx23885/cx23885-alsa.c +++ b/drivers/media/pci/cx23885/cx23885-alsa.c @@ -392,8 +392,10 @@ static int snd_cx23885_hw_params(struct snd_pcm_substream *substream, ret = cx23885_risc_databuffer(chip->pci, &buf->risc, buf->sglist, chip->period_size, chip->num_periods, 1); - if (ret < 0) + if (ret < 0) { + cx23885_alsa_dma_unmap(chip); goto error; + } /* Loop back to start of program */ buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP|RISC_IRQ1|RISC_CNT_INC); -- 2.25.1

1 week, 3 days

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[PATCH] media: cx88: Add missing unmap in snd_cx88_hw_params()

by Haoxiang Li

In error path, add cx88_alsa_dma_unmap() to release resource acquired by cx88_alsa_dma_map(). Fixes: b2c75abde0de ("[media] cx88: drop videobuf abuse in cx88-alsa") Cc: stable(a)vger.kernel.org Signed-off-by: Haoxiang Li <lihaoxiang(a)isrc.iscas.ac.cn> --- drivers/media/pci/cx88/cx88-alsa.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/media/pci/cx88/cx88-alsa.c b/drivers/media/pci/cx88/cx88-alsa.c index 29fb1311e443..4e574d8390b4 100644 --- a/drivers/media/pci/cx88/cx88-alsa.c +++ b/drivers/media/pci/cx88/cx88-alsa.c @@ -483,8 +483,10 @@ static int snd_cx88_hw_params(struct snd_pcm_substream *substream, ret = cx88_risc_databuffer(chip->pci, &buf->risc, buf->sglist, chip->period_size, chip->num_periods, 1); - if (ret < 0) + if (ret < 0) { + cx88_alsa_dma_unmap(chip); goto error; + } /* Loop back to start of program */ buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC); -- 2.25.1

1 week, 3 days

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[PATCH] media: cx25821: Add missing unmap in snd_cx25821_hw_params()

by Haoxiang Li

In error path, add cx25821_alsa_dma_unmap() to release the resource acquired by cx25821_alsa_dma_map() Fixes: b2c75abde0de ("[media] cx88: drop videobuf abuse in cx88-alsa") Cc: stable(a)vger.kernel.org Signed-off-by: Haoxiang Li <lihaoxiang(a)isrc.iscas.ac.cn> --- drivers/media/pci/cx25821/cx25821-alsa.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/media/pci/cx25821/cx25821-alsa.c b/drivers/media/pci/cx25821/cx25821-alsa.c index a42f0c03a7ca..f463365163b7 100644 --- a/drivers/media/pci/cx25821/cx25821-alsa.c +++ b/drivers/media/pci/cx25821/cx25821-alsa.c @@ -535,6 +535,7 @@ static int snd_cx25821_hw_params(struct snd_pcm_substream *substream, chip->period_size, chip->num_periods, 1); if (ret < 0) { pr_info("DEBUG: ERROR after cx25821_risc_databuffer_audio()\n"); + cx25821_alsa_dma_unmap(chip); goto error; } -- 2.25.1

1 week, 3 days

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[PATCH v2] x86/elf: Fix core dump truncation on CPUs with no extended xfeatures

by yongxin.liu＠windriver.com

From: Yongxin Liu <yongxin.liu(a)windriver.com> Zero can be a valid value of num_records. For example, on Intel Atom x6425RE, only x87 and SSE are supported (features 0, 1), and fpu_user_cfg.max_features is 3. The for_each_extended_xfeature() loop only iterates feature 2, which is not enabled, so num_records = 0. This is valid and should not cause core dump failure. The issue is that dump_xsave_layout_desc() returns 0 for both genuine errors (dump_emit() failure) and valid cases (no extended features). Use negative return values for errors and only abort on genuine failures. Cc: stable(a)vger.kernel.org Fixes: ba386777a30b ("x86/elf: Add a new FPU buffer layout info to x86 core files") Signed-off-by: Yongxin Liu <yongxin.liu(a)windriver.com> --- V2: Keep error checking but use negative value for genuine error V1: Remove error checking entirely --- arch/x86/kernel/fpu/xstate.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/x86/kernel/fpu/xstate.c b/arch/x86/kernel/fpu/xstate.c index 48113c5193aa..76153dfb58c9 100644 --- a/arch/x86/kernel/fpu/xstate.c +++ b/arch/x86/kernel/fpu/xstate.c @@ -1946,7 +1946,7 @@ static int dump_xsave_layout_desc(struct coredump_params *cprm) }; if (!dump_emit(cprm, &xc, sizeof(xc))) - return 0; + return -1; num_records++; } @@ -1984,7 +1984,7 @@ int elf_coredump_extra_notes_write(struct coredump_params *cprm) return 1; num_records = dump_xsave_layout_desc(cprm); - if (!num_records) + if (num_records < 0) return 1; /* Total size should be equal to the number of records */ -- 2.46.2

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[PATCH] x86/elf: Fix core dump truncation on CPUs with no extended xfeatures

by yongxin.liu＠windriver.com

From: Yongxin Liu <yongxin.liu(a)windriver.com> Zero can be a valid value of num_records. For example, on Intel Atom x6425RE, only x87 and SSE are supported (features 0, 1), and fpu_user_cfg.max_features is 3. The for_each_extended_xfeature() loop only iterates feature 2, which is not enabled, so num_records = 0. This is valid and should not cause core dump failure. The size check already validates consistency: if num_records = 0, then en.n_descsz = 0, so the check passes. Cc: stable(a)vger.kernel.org Fixes: ba386777a30b ("x86/elf: Add a new FPU buffer layout info to x86 core files") Signed-off-by: Yongxin Liu <yongxin.liu(a)windriver.com> --- arch/x86/kernel/fpu/xstate.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/arch/x86/kernel/fpu/xstate.c b/arch/x86/kernel/fpu/xstate.c index 48113c5193aa..b1dd30eb21a8 100644 --- a/arch/x86/kernel/fpu/xstate.c +++ b/arch/x86/kernel/fpu/xstate.c @@ -1984,8 +1984,6 @@ int elf_coredump_extra_notes_write(struct coredump_params *cprm) return 1; num_records = dump_xsave_layout_desc(cprm); - if (!num_records) - return 1; /* Total size should be equal to the number of records */ if ((sizeof(struct x86_xfeat_component) * num_records) != en.n_descsz) -- 2.46.2

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[PATCH v5 1/6] drm/amdgpu: Fix gfx9 update PTE mtype flag

by Philip Yang

Fix copy&paste error, that should have been an assignment instead of an or, otherwise MTYPE_UC 0x3 can not be updated to MTYPE_RW 0x1. CC stables. cc: stable(a)vger.kernel.org Signed-off-by: Philip Yang <Philip.Yang(a)amd.com> Reviewed-by: Christian König <christian.koenig(a)amd.com> --- drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c index 97a04e3171f2..205c34eb8d11 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c @@ -1204,16 +1204,16 @@ static void gmc_v9_0_get_vm_pte(struct amdgpu_device *adev, *flags = AMDGPU_PTE_MTYPE_VG10(*flags, MTYPE_NC); break; case AMDGPU_VM_MTYPE_WC: - *flags |= AMDGPU_PTE_MTYPE_VG10(*flags, MTYPE_WC); + *flags = AMDGPU_PTE_MTYPE_VG10(*flags, MTYPE_WC); break; case AMDGPU_VM_MTYPE_RW: - *flags |= AMDGPU_PTE_MTYPE_VG10(*flags, MTYPE_RW); + *flags = AMDGPU_PTE_MTYPE_VG10(*flags, MTYPE_RW); break; case AMDGPU_VM_MTYPE_CC: - *flags |= AMDGPU_PTE_MTYPE_VG10(*flags, MTYPE_CC); + *flags = AMDGPU_PTE_MTYPE_VG10(*flags, MTYPE_CC); break; case AMDGPU_VM_MTYPE_UC: - *flags |= AMDGPU_PTE_MTYPE_VG10(*flags, MTYPE_UC); + *flags = AMDGPU_PTE_MTYPE_VG10(*flags, MTYPE_UC); break; } -- 2.50.1

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[PATCH] lib/crypto: riscv: Depend on RISCV_EFFICIENT_VECTOR_UNALIGNED_ACCESS

by Eric Biggers

Replace the RISCV_ISA_V dependency of the RISC-V crypto code with RISCV_EFFICIENT_VECTOR_UNALIGNED_ACCESS, which implies RISCV_ISA_V as well as vector unaligned accesses being efficient. This is necessary because this code assumes that vector unaligned accesses are supported and are efficient. (It does so to avoid having to use lots of extra vsetvli instructions to switch the element width back and forth between 8 and either 32 or 64.) This was omitted from the code originally just because the RISC-V kernel support for detecting this feature didn't exist yet. Support has now been added, but it's fragmented into per-CPU runtime detection, a command-line parameter, and a kconfig option. The kconfig option is the only reasonable way to do it, though, so let's just rely on that. Fixes: eb24af5d7a05 ("crypto: riscv - add vector crypto accelerated AES-{ECB,CBC,CTR,XTS}") Fixes: bb54668837a0 ("crypto: riscv - add vector crypto accelerated ChaCha20") Fixes: 600a3853dfa0 ("crypto: riscv - add vector crypto accelerated GHASH") Fixes: 8c8e40470ffe ("crypto: riscv - add vector crypto accelerated SHA-{256,224}") Fixes: b3415925a08b ("crypto: riscv - add vector crypto accelerated SHA-{512,384}") Fixes: 563a5255afa2 ("crypto: riscv - add vector crypto accelerated SM3") Fixes: b8d06352bbf3 ("crypto: riscv - add vector crypto accelerated SM4") Cc: stable(a)vger.kernel.org Signed-off-by: Eric Biggers <ebiggers(a)kernel.org> --- arch/riscv/crypto/Kconfig | 12 ++++++++---- lib/crypto/Kconfig | 9 ++++++--- 2 files changed, 14 insertions(+), 7 deletions(-) diff --git a/arch/riscv/crypto/Kconfig b/arch/riscv/crypto/Kconfig index a75d6325607b..14c5acb935e9 100644 --- a/arch/riscv/crypto/Kconfig +++ b/arch/riscv/crypto/Kconfig @@ -2,11 +2,12 @@ menu "Accelerated Cryptographic Algorithms for CPU (riscv)" config CRYPTO_AES_RISCV64 tristate "Ciphers: AES, modes: ECB, CBC, CTS, CTR, XTS" - depends on 64BIT && RISCV_ISA_V && TOOLCHAIN_HAS_VECTOR_CRYPTO + depends on 64BIT && TOOLCHAIN_HAS_VECTOR_CRYPTO && \ + RISCV_EFFICIENT_VECTOR_UNALIGNED_ACCESS select CRYPTO_ALGAPI select CRYPTO_LIB_AES select CRYPTO_SKCIPHER help Block cipher: AES cipher algorithms @@ -18,21 +19,23 @@ config CRYPTO_AES_RISCV64 - Zvkb vector crypto extension (CTR) - Zvkg vector crypto extension (XTS) config CRYPTO_GHASH_RISCV64 tristate "Hash functions: GHASH" - depends on 64BIT && RISCV_ISA_V && TOOLCHAIN_HAS_VECTOR_CRYPTO + depends on 64BIT && TOOLCHAIN_HAS_VECTOR_CRYPTO && \ + RISCV_EFFICIENT_VECTOR_UNALIGNED_ACCESS select CRYPTO_GCM help GCM GHASH function (NIST SP 800-38D) Architecture: riscv64 using: - Zvkg vector crypto extension config CRYPTO_SM3_RISCV64 tristate "Hash functions: SM3 (ShangMi 3)" - depends on 64BIT && RISCV_ISA_V && TOOLCHAIN_HAS_VECTOR_CRYPTO + depends on 64BIT && TOOLCHAIN_HAS_VECTOR_CRYPTO && \ + RISCV_EFFICIENT_VECTOR_UNALIGNED_ACCESS select CRYPTO_HASH select CRYPTO_LIB_SM3 help SM3 (ShangMi 3) secure hash function (OSCCA GM/T 0004-2012) @@ -40,11 +43,12 @@ config CRYPTO_SM3_RISCV64 - Zvksh vector crypto extension - Zvkb vector crypto extension config CRYPTO_SM4_RISCV64 tristate "Ciphers: SM4 (ShangMi 4)" - depends on 64BIT && RISCV_ISA_V && TOOLCHAIN_HAS_VECTOR_CRYPTO + depends on 64BIT && TOOLCHAIN_HAS_VECTOR_CRYPTO && \ + RISCV_EFFICIENT_VECTOR_UNALIGNED_ACCESS select CRYPTO_ALGAPI select CRYPTO_SM4 help SM4 block cipher algorithm (OSCCA GB/T 32907-2016, ISO/IEC 18033-3:2010/Amd 1:2021) diff --git a/lib/crypto/Kconfig b/lib/crypto/Kconfig index a3647352bff6..6871a41e5069 100644 --- a/lib/crypto/Kconfig +++ b/lib/crypto/Kconfig @@ -59,11 +59,12 @@ config CRYPTO_LIB_CHACHA_ARCH depends on CRYPTO_LIB_CHACHA && !UML && !KMSAN default y if ARM default y if ARM64 && KERNEL_MODE_NEON default y if MIPS && CPU_MIPS32_R2 default y if PPC64 && CPU_LITTLE_ENDIAN && VSX - default y if RISCV && 64BIT && RISCV_ISA_V && TOOLCHAIN_HAS_VECTOR_CRYPTO + default y if RISCV && 64BIT && TOOLCHAIN_HAS_VECTOR_CRYPTO && \ + RISCV_EFFICIENT_VECTOR_UNALIGNED_ACCESS default y if S390 default y if X86_64 config CRYPTO_LIB_CURVE25519 tristate @@ -182,11 +183,12 @@ config CRYPTO_LIB_SHA256_ARCH depends on CRYPTO_LIB_SHA256 && !UML default y if ARM && !CPU_V7M default y if ARM64 default y if MIPS && CPU_CAVIUM_OCTEON default y if PPC && SPE - default y if RISCV && 64BIT && RISCV_ISA_V && TOOLCHAIN_HAS_VECTOR_CRYPTO + default y if RISCV && 64BIT && TOOLCHAIN_HAS_VECTOR_CRYPTO && \ + RISCV_EFFICIENT_VECTOR_UNALIGNED_ACCESS default y if S390 default y if SPARC64 default y if X86_64 config CRYPTO_LIB_SHA512 @@ -200,11 +202,12 @@ config CRYPTO_LIB_SHA512_ARCH bool depends on CRYPTO_LIB_SHA512 && !UML default y if ARM && !CPU_V7M default y if ARM64 default y if MIPS && CPU_CAVIUM_OCTEON - default y if RISCV && 64BIT && RISCV_ISA_V && TOOLCHAIN_HAS_VECTOR_CRYPTO + default y if RISCV && 64BIT && TOOLCHAIN_HAS_VECTOR_CRYPTO && \ + RISCV_EFFICIENT_VECTOR_UNALIGNED_ACCESS default y if S390 default y if SPARC64 default y if X86_64 config CRYPTO_LIB_SHA3 base-commit: 43dfc13ca972988e620a6edb72956981b75ab6b0 -- 2.52.0

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[PATCH 1/2] drm/xe: Use generic_handle_irq_safe inside heci gsc irq handler

by Maarten Lankhorst

This makes the irq handler safe on PREEMPT-RT too. This is similar to the i915 commit 8cadce97bf26 ("drm/i915/gsc: mei interrupt top half should be in irq disabled context"). Fixes: 87a4c85d3a3e ("drm/xe/gsc: add gsc device support") Cc: <stable(a)vger.kernel.org> # v6.8+ Signed-off-by: Maarten Lankhorst <dev(a)lankhorst.se> --- drivers/gpu/drm/xe/xe_heci_gsc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/xe/xe_heci_gsc.c b/drivers/gpu/drm/xe/xe_heci_gsc.c index 2b3d49dd394c0..495cdd4f948d5 100644 --- a/drivers/gpu/drm/xe/xe_heci_gsc.c +++ b/drivers/gpu/drm/xe/xe_heci_gsc.c @@ -223,7 +223,7 @@ void xe_heci_gsc_irq_handler(struct xe_device *xe, u32 iir) if (xe->heci_gsc.irq < 0) return; - ret = generic_handle_irq(xe->heci_gsc.irq); + ret = generic_handle_irq_safe(xe->heci_gsc.irq); if (ret) drm_err_ratelimited(&xe->drm, "error handling GSC irq: %d\n", ret); } @@ -243,7 +243,7 @@ void xe_heci_csc_irq_handler(struct xe_device *xe, u32 iir) if (xe->heci_gsc.irq < 0) return; - ret = generic_handle_irq(xe->heci_gsc.irq); + ret = generic_handle_irq_safe(xe->heci_gsc.irq); if (ret) drm_err_ratelimited(&xe->drm, "error handling GSC irq: %d\n", ret); } -- 2.51.0

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[PATCH v6 0/9] Error recovery for vfio-pci devices on s390x

by Farhan Ali

Hi, This Linux kernel patch series introduces support for error recovery for passthrough PCI devices on System Z (s390x). Background ---------- For PCI devices on s390x an operating system receives platform specific error events from firmware rather than through AER.Today for passthrough/userspace devices, we don't attempt any error recovery and ignore any error events for the devices. The passthrough/userspace devices are managed by the vfio-pci driver. The driver does register error handling callbacks (error_detected), and on an error trigger an eventfd to userspace. But we need a mechanism to notify userspace (QEMU/guest/userspace drivers) about the error event. Proposal -------- We can expose this error information (currently only the PCI Error Code) via a device feature. Userspace can then obtain the error information via VFIO_DEVICE_FEATURE ioctl and take appropriate actions such as driving a device reset. This is how a typical flow for passthrough devices to a VM would work: For passthrough devices to a VM, the driver bound to the device on the host is vfio-pci. vfio-pci driver does support the error_detected() callback (vfio_pci_core_aer_err_detected()), and on an PCI error s390x recovery code on the host will call the vfio-pci error_detected() callback. The vfio-pci error_detected() callback will notify userspace/QEMU via an eventfd, and return PCI_ERS_RESULT_CAN_RECOVER. At this point the s390x error recovery on the host will skip any further action(see patch 6) and let userspace drive the error recovery. Once userspace/QEMU is notified, it then injects this error into the VM so device drivers in the VM can take recovery actions. For example for a passthrough NVMe device, the VM's OS NVMe driver will access the device. At this point the VM's NVMe driver's error_detected() will drive the recovery by returning PCI_ERS_RESULT_NEED_RESET, and the s390x error recovery in the VM's OS will try to do a reset. Resets are privileged operations and so the VM will need intervention from QEMU to perform the reset. QEMU will invoke the VFIO_DEVICE_RESET ioctl to now notify the host that the VM is requesting a reset of the device. The vfio-pci driver on the host will then perform the reset on the device to recover it. Thanks Farhan ChangeLog --------- v5 series https://lore.kernel.org/all/20251113183502.2388-1-alifm@linux.ibm.com/ v5 -> v6 - Rebase on 6.18 + Lukas's PCI: Universal error recoverability of devices series (https://lore.kernel.org/all/cover.1763483367.git.lukas@wunner.de/) - Re-work config space accessibility check to pci_dev_save_and_disable() (patch 3). This avoids saving the config space, in the reset path, if the device's config space is corrupted or inaccessible. v4 series https://lore.kernel.org/all/20250924171628.826-1-alifm@linux.ibm.com/ v4 -> v5 - Rebase on 6.18-rc5 - Move bug fixes to the beginning of the series (patch 1 and 2). These patches were posted as a separate fixes series https://lore.kernel.org/all/a14936ac-47d6-461b-816f-0fd66f869b0f@linux.ibm.… - Add matching pci_put_dev() for pci_get_slot() (patch 6). v3 series https://lore.kernel.org/all/20250911183307.1910-1-alifm@linux.ibm.com/ v3 -> v4 - Remove warn messages for each PCI capability not restored (patch 1) - Check PCI_COMMAND and PCI_STATUS register for error value instead of device id (patch 1) - Fix kernel crash in patch 3 - Added reviewed by tags - Address comments from Niklas's (patches 4, 5, 7) - Fix compilation error non s390x system (patch 8) - Explicitly align struct vfio_device_feature_zpci_err (patch 8) v2 series https://lore.kernel.org/all/20250825171226.1602-1-alifm@linux.ibm.com/ v2 -> v3 - Patch 1 avoids saving any config space state if the device is in error (suggested by Alex) - Patch 2 adds additional check only for FLR reset to try other function reset method (suggested by Alex). - Patch 3 fixes a bug in s390 for resetting PCI devices with multiple functions. Creates a new flag pci_slot to allow per function slot. - Patch 4 fixes a bug in s390 for resource to bus address translation. - Rebase on 6.17-rc5 v1 series https://lore.kernel.org/all/20250813170821.1115-1-alifm@linux.ibm.com/ v1 - > v2 - Patches 1 and 2 adds some additional checks for FLR/PM reset to try other function reset method (suggested by Alex). - Patch 3 fixes a bug in s390 for resetting PCI devices with multiple functions. - Patch 7 adds a new device feature for zPCI devices for the VFIO_DEVICE_FEATURE ioctl. The ioctl is used by userspace to retriece any PCI error information for the device (suggested by Alex). - Patch 8 adds a reset_done() callback for the vfio-pci driver, to restore the state of the device after a reset. - Patch 9 removes the pcie check for triggering VFIO_PCI_ERR_IRQ_INDEX. Farhan Ali (9): PCI: Allow per function PCI slots s390/pci: Add architecture specific resource/bus address translation PCI: Avoid saving config space state if inaccessible PCI: Add additional checks for flr reset s390/pci: Update the logic for detecting passthrough device s390/pci: Store PCI error information for passthrough devices vfio-pci/zdev: Add a device feature for error information vfio: Add a reset_done callback for vfio-pci driver vfio: Remove the pcie check for VFIO_PCI_ERR_IRQ_INDEX arch/s390/include/asm/pci.h | 29 ++++++++ arch/s390/pci/pci.c | 75 +++++++++++++++++++++ arch/s390/pci/pci_event.c | 107 +++++++++++++++++------------- drivers/pci/host-bridge.c | 4 +- drivers/pci/pci.c | 19 +++++- drivers/pci/slot.c | 25 ++++++- drivers/vfio/pci/vfio_pci_core.c | 20 ++++-- drivers/vfio/pci/vfio_pci_intrs.c | 3 +- drivers/vfio/pci/vfio_pci_priv.h | 9 +++ drivers/vfio/pci/vfio_pci_zdev.c | 45 ++++++++++++- include/linux/pci.h | 1 + include/uapi/linux/vfio.h | 15 +++++ 12 files changed, 291 insertions(+), 61 deletions(-) -- 2.43.0

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¿Cuánto cuesta una mala contratación?

by Valeria Pérez

¿Cuánto cuesta una mala contratación? body { margin: 0; padding: 0; font-family: Arial, Helvetica, sans-serif; font-size: 14px; color: #333; background-color: #ffffff; } table { border-spacing: 0; width: 100%; max-width: 600px; margin: auto; } td { padding: 12px 20px; } a { color: #1a73e8; text-decoration: none; } .footer { font-size: 12px; color: #888888; text-align: center; } Una mala contratación cuesta 3X el salario. Evítalo con datos, no percepciones. Hola, , ¿Sabías que una mala contratación cuesta hasta 3 veces el salario anual? El 74% de empresas admite haber contratado a la persona equivocada. El motivo: decisiones basadas en percepciones, no en datos objetivos. PsicoSmart te ayuda a evaluar talento con precisión: 31 pruebas psicométricas validadas para medir liderazgo, honestidad e inteligencia 2,500+ exámenes técnicos especializados por industria Verificación de identidad con captura fotográfica automática Resultados en minutos, accesible desde cualquier dispositivo Reduce hasta 60% el riesgo de error en selección. ¿Quieres una demostración gratuita? Responde este correo y te contacto en menos de 24 horas. Saludos, -------------- Atte.: Valeria Pérez Ciudad de México: (55) 5018 0565 WhatsApp: +52 33 1607 2089 Si no deseas recibir más correos, haz clic aquí para darte de baja. Para remover su dirección de esta lista haga <a href="https://s1.arrobamail.com/unsuscribe.php?id=yiwtsrewiswqtrseup">click aquí</a>

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[merged mm-nonmm-stable] ocfs2-fix-kernel-bug-in-ocfs2_find_victim_chain.patch removed from -mm tree

by Andrew Morton

The quilt patch titled Subject: ocfs2: fix kernel BUG in ocfs2_find_victim_chain has been removed from the -mm tree. Its filename was ocfs2-fix-kernel-bug-in-ocfs2_find_victim_chain.patch This patch was dropped because it was merged into the mm-nonmm-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: Prithvi Tambewagh <activprithvi(a)gmail.com> Subject: ocfs2: fix kernel BUG in ocfs2_find_victim_chain Date: Mon, 1 Dec 2025 18:37:11 +0530 syzbot reported a kernel BUG in ocfs2_find_victim_chain() because the `cl_next_free_rec` field of the allocation chain list (next free slot in the chain list) is 0, triggring the BUG_ON(!cl->cl_next_free_rec) condition in ocfs2_find_victim_chain() and panicking the kernel. To fix this, an if condition is introduced in ocfs2_claim_suballoc_bits(), just before calling ocfs2_find_victim_chain(), the code block in it being executed when either of the following conditions is true: 1. `cl_next_free_rec` is equal to 0, indicating that there are no free chains in the allocation chain list 2. `cl_next_free_rec` is greater than `cl_count` (the total number of chains in the allocation chain list) Either of them being true is indicative of the fact that there are no chains left for usage. This is addressed using ocfs2_error(), which prints the error log for debugging purposes, rather than panicking the kernel. Link: https://lkml.kernel.org/r/20251201130711.143900-1-activprithvi@gmail.com Signed-off-by: Prithvi Tambewagh <activprithvi(a)gmail.com> Reported-by: syzbot+96d38c6e1655c1420a72(a)syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=96d38c6e1655c1420a72 Tested-by: syzbot+96d38c6e1655c1420a72(a)syzkaller.appspotmail.com Reviewed-by: Joseph Qi <joseph.qi(a)linux.alibaba.com> Cc: Mark Fasheh <mark(a)fasheh.com> Cc: Joel Becker <jlbec(a)evilplan.org> Cc: Junxiao Bi <junxiao.bi(a)oracle.com> Cc: Changwei Ge <gechangwei(a)live.cn> Cc: Jun Piao <piaojun(a)huawei.com> Cc: Heming Zhao <heming.zhao(a)suse.com> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- fs/ocfs2/suballoc.c | 10 ++++++++++ 1 file changed, 10 insertions(+) --- a/fs/ocfs2/suballoc.c~ocfs2-fix-kernel-bug-in-ocfs2_find_victim_chain +++ a/fs/ocfs2/suballoc.c @@ -1993,6 +1993,16 @@ static int ocfs2_claim_suballoc_bits(str } cl = (struct ocfs2_chain_list *) &fe->id2.i_chain; + if (!le16_to_cpu(cl->cl_next_free_rec) || + le16_to_cpu(cl->cl_next_free_rec) > le16_to_cpu(cl->cl_count)) { + status = ocfs2_error(ac->ac_inode->i_sb, + "Chain allocator dinode %llu has invalid next " + "free chain record %u, but only %u total\n", + (unsigned long long)le64_to_cpu(fe->i_blkno), + le16_to_cpu(cl->cl_next_free_rec), + le16_to_cpu(cl->cl_count)); + goto bail; + } victim = ocfs2_find_victim_chain(cl); ac->ac_chain = victim; _ Patches currently in -mm which might be from activprithvi(a)gmail.com are

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[merged mm-stable] mm-hugetlb-fix-excessive-ipi-broadcasts-when-unsharing-pmd-tables-using-mmu_gather.patch removed from -mm tree

by Andrew Morton

The quilt patch titled Subject: mm/hugetlb: fix excessive IPI broadcasts when unsharing PMD tables using mmu_gather has been removed from the -mm tree. Its filename was mm-hugetlb-fix-excessive-ipi-broadcasts-when-unsharing-pmd-tables-using-mmu_gather.patch This patch was dropped because it was merged into the mm-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: "David Hildenbrand (Red Hat)" <david(a)kernel.org> Subject: mm/hugetlb: fix excessive IPI broadcasts when unsharing PMD tables using mmu_gather Date: Fri, 5 Dec 2025 22:35:58 +0100 As reported, ever since commit 1013af4f585f ("mm/hugetlb: fix huge_pmd_unshare() vs GUP-fast race") we can end up in some situations where we perform so many IPI broadcasts when unsharing hugetlb PMD page tables that it severely regresses some workloads. In particular, when we fork()+exit(), or when we munmap() a large area backed by many shared PMD tables, we perform one IPI broadcast per unshared PMD table. There are two optimizations to be had: (1) When we process (unshare) multiple such PMD tables, such as during exit(), it is sufficient to send a single IPI broadcast (as long as we respect locking rules) instead of one per PMD table. Locking prevents that any of these PMD tables could get reuse before we drop the lock. (2) When we are not the last sharer (> 2 users including us), there is no need to send the IPI broadcast. The shared PMD tables cannot become exclusive (fully unshared) before an IPI will be broadcasted by the last sharer. Concurrent GUP-fast could walk into a PMD table just before we unshared it. It could then succeed in grabbing a page from the shared page table even after munmap() etc succeeded (and supressed an IPI). But there is not difference compared to GUP-fast just sleeping for a while after grabbing the page and re-enabling IRQs. Most importantly, GUP-fast will never walk into page tables that are no-longer shared, because the last sharer will issue an IPI broadcast. (if ever required, checking whether the PUD changed in GUP-fast after grabbing the page like we do in the PTE case could handle this) So let's rework PMD sharing TLB flushing + IPI sync to use the mmu_gather infrastructure so we can implement these optimizations and demystify the code at least a bit. Extend the mmu_gather infrastructure to be able to deal with our special hugetlb PMD table sharing implementation. We'll consolidate the handling for (full) unsharing of PMD tables in tlb_unshare_pmd_ptdesc() and tlb_flush_unshared_tables(), and track in "struct mmu_gather" whether we had (full) unsharing of PMD tables. Because locking is very special (concurrent unsharing+reuse must be prevented), we disallow deferring flushing to tlb_finish_mmu() and instead require an explicit earlier call to tlb_flush_unshared_tables(). From hugetlb code, we call huge_pmd_unshare_flush() where we make sure that the expected lock protecting us from concurrent unsharing+reuse is still held. Check with a VM_WARN_ON_ONCE() in tlb_finish_mmu() that tlb_flush_unshared_tables() was properly called earlier. Document it all properly. Notes about tlb_remove_table_sync_one() interaction with unsharing: There are two fairly tricky things: (1) tlb_remove_table_sync_one() is a NOP on architectures without CONFIG_MMU_GATHER_RCU_TABLE_FREE. Here, the assumption is that the previous TLB flush would send an IPI to all relevant CPUs. Careful: some architectures like x86 only send IPIs to all relevant CPUs when tlb->freed_tables is set. The relevant architectures should be selecting MMU_GATHER_RCU_TABLE_FREE, but x86 might not do that in stable kernels and it might have been problematic before this patch. Also, the arch flushing behavior (independent of IPIs) is different when tlb->freed_tables is set. Do we have to enlighten them to also take care of tlb->unshared_tables? So far we didn't care, so hopefully we are fine. Of course, we could be setting tlb->freed_tables as well, but that might then unnecessarily flush too much, because the semantics of tlb->freed_tables are a bit fuzzy. This patch changes nothing in this regard. (2) tlb_remove_table_sync_one() is not a NOP on architectures with CONFIG_MMU_GATHER_RCU_TABLE_FREE that actually don't need a sync. Take x86 as an example: in the common case (!pv, !X86_FEATURE_INVLPGB) we still issue IPIs during TLB flushes and don't actually need the second tlb_remove_table_sync_one(). This optimized can be implemented on top of this, by checking e.g., in tlb_remove_table_sync_one() whether we really need IPIs. But as described in (1), it really must honor tlb->freed_tables then to send IPIs to all relevant CPUs. Further note that the ptdesc_pmd_pts_dec() in huge_pmd_share() is not a concern, as we are holding the i_mmap_lock the whole time, preventing concurrent unsharing. That ptdesc_pmd_pts_dec() usage will be removed separately as a cleanup later. There are plenty more cleanups to be had, but they have to wait until this is fixed. Link: https://lkml.kernel.org/r/20251205213558.2980480-5-david@kernel.org Fixes: 1013af4f585f ("mm/hugetlb: fix huge_pmd_unshare() vs GUP-fast race") Signed-off-by: David Hildenbrand (Red Hat) <david(a)kernel.org> Reported-by: Uschakow, Stanislav" <suschako(a)amazon.de> Closes: https://lore.kernel.org/all/4d3878531c76479d9f8ca9789dc6485d@amazon.de/ Tested-by: Laurence Oberman <loberman(a)redhat.com> Cc: "Aneesh Kumar K.V" <aneesh.kumar(a)kernel.org> Cc: Arnd Bergmann <arnd(a)arndb.de> Cc: Jann Horn <jannh(a)google.com> Cc: Liam Howlett <liam.howlett(a)oracle.com> Cc: Liu Shixin <liushixin2(a)huawei.com> Cc: Lorenzo Stoakes <lorenzo.stoakes(a)oracle.com> Cc: Muchun Song <muchun.song(a)linux.dev> Cc: Nadav Amit <nadav.amit(a)gmail.com> Cc: Nicholas Piggin <npiggin(a)gmail.com> Cc: Oscar Salvador <osalvador(a)suse.de> Cc: Peter Zijlstra <peterz(a)infradead.org> Cc: Prakash Sangappa <prakash.sangappa(a)oracle.com> Cc: Rik van Riel <riel(a)surriel.com> Cc: Vlastimil Babka <vbabka(a)suse.cz> Cc: Will Deacon <will(a)kernel.org> Cc: Lance Yang <lance.yang(a)linux.dev> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- include/asm-generic/tlb.h | 69 ++++++++++++++++++++ include/linux/hugetlb.h | 19 +++-- mm/hugetlb.c | 121 ++++++++++++++++++++---------------- mm/mmu_gather.c | 6 + mm/mprotect.c | 2 mm/rmap.c | 25 +++++-- 6 files changed, 173 insertions(+), 69 deletions(-) --- a/include/asm-generic/tlb.h~mm-hugetlb-fix-excessive-ipi-broadcasts-when-unsharing-pmd-tables-using-mmu_gather +++ a/include/asm-generic/tlb.h @@ -364,6 +364,17 @@ struct mmu_gather { unsigned int vma_huge : 1; unsigned int vma_pfn : 1; + /* + * Did we unshare (unmap) any shared page tables? + */ + unsigned int unshared_tables : 1; + + /* + * Did we unshare any page tables such that they are now exclusive + * and could get reused+modified by the new owner? + */ + unsigned int fully_unshared_tables : 1; + unsigned int batch_count; #ifndef CONFIG_MMU_GATHER_NO_GATHER @@ -400,6 +411,7 @@ static inline void __tlb_reset_range(str tlb->cleared_pmds = 0; tlb->cleared_puds = 0; tlb->cleared_p4ds = 0; + tlb->unshared_tables = 0; /* * Do not reset mmu_gather::vma_* fields here, we do not * call into tlb_start_vma() again to set them if there is an @@ -484,7 +496,7 @@ static inline void tlb_flush_mmu_tlbonly * these bits. */ if (!(tlb->freed_tables || tlb->cleared_ptes || tlb->cleared_pmds || - tlb->cleared_puds || tlb->cleared_p4ds)) + tlb->cleared_puds || tlb->cleared_p4ds || tlb->unshared_tables)) return; tlb_flush(tlb); @@ -773,6 +785,61 @@ static inline bool huge_pmd_needs_flush( } #endif +#ifdef CONFIG_HUGETLB_PMD_PAGE_TABLE_SHARING +static inline void tlb_unshare_pmd_ptdesc(struct mmu_gather *tlb, struct ptdesc *pt, + unsigned long addr) +{ + /* + * The caller must make sure that concurrent unsharing + exclusive + * reuse is impossible until tlb_flush_unshared_tables() was called. + */ + VM_WARN_ON_ONCE(!ptdesc_pmd_is_shared(pt)); + ptdesc_pmd_pts_dec(pt); + + /* Clearing a PUD pointing at a PMD table with PMD leaves. */ + tlb_flush_pmd_range(tlb, addr & PUD_MASK, PUD_SIZE); + + /* + * If the page table is now exclusively owned, we fully unshared + * a page table. + */ + if (!ptdesc_pmd_is_shared(pt)) + tlb->fully_unshared_tables = true; + tlb->unshared_tables = true; +} + +static inline void tlb_flush_unshared_tables(struct mmu_gather *tlb) +{ + /* + * As soon as the caller drops locks to allow for reuse of + * previously-shared tables, these tables could get modified and + * even reused outside of hugetlb context. So flush the TLB now. + * + * Note that we cannot defer the flush to a later point even if we are + * not the last sharer of the page table. + */ + if (tlb->unshared_tables) + tlb_flush_mmu_tlbonly(tlb); + + /* + * Similarly, we must make sure that concurrent GUP-fast will not + * walk previously-shared page tables that are getting modified+reused + * elsewhere. So broadcast an IPI to wait for any concurrent GUP-fast. + * + * We only perform this when we are the last sharer of a page table, + * as the IPI will reach all CPUs: any GUP-fast. + * + * Note that on configs where tlb_remove_table_sync_one() is a NOP, + * the expectation is that the tlb_flush_mmu_tlbonly() would have issued + * required IPIs already for us. + */ + if (tlb->fully_unshared_tables) { + tlb_remove_table_sync_one(); + tlb->fully_unshared_tables = false; + } +} +#endif /* CONFIG_HUGETLB_PMD_PAGE_TABLE_SHARING */ + #endif /* CONFIG_MMU */ #endif /* _ASM_GENERIC__TLB_H */ --- a/include/linux/hugetlb.h~mm-hugetlb-fix-excessive-ipi-broadcasts-when-unsharing-pmd-tables-using-mmu_gather +++ a/include/linux/hugetlb.h @@ -240,8 +240,9 @@ pte_t *huge_pte_alloc(struct mm_struct * pte_t *huge_pte_offset(struct mm_struct *mm, unsigned long addr, unsigned long sz); unsigned long hugetlb_mask_last_page(struct hstate *h); -int huge_pmd_unshare(struct mm_struct *mm, struct vm_area_struct *vma, - unsigned long addr, pte_t *ptep); +int huge_pmd_unshare(struct mmu_gather *tlb, struct vm_area_struct *vma, + unsigned long addr, pte_t *ptep); +void huge_pmd_unshare_flush(struct mmu_gather *tlb, struct vm_area_struct *vma); void adjust_range_if_pmd_sharing_possible(struct vm_area_struct *vma, unsigned long *start, unsigned long *end); @@ -271,7 +272,7 @@ void hugetlb_vma_unlock_write(struct vm_ int hugetlb_vma_trylock_write(struct vm_area_struct *vma); void hugetlb_vma_assert_locked(struct vm_area_struct *vma); void hugetlb_vma_lock_release(struct kref *kref); -long hugetlb_change_protection(struct vm_area_struct *vma, +long hugetlb_change_protection(struct mmu_gather *tlb, struct vm_area_struct *vma, unsigned long address, unsigned long end, pgprot_t newprot, unsigned long cp_flags); void hugetlb_unshare_all_pmds(struct vm_area_struct *vma); @@ -300,13 +301,17 @@ static inline struct address_space *huge return NULL; } -static inline int huge_pmd_unshare(struct mm_struct *mm, - struct vm_area_struct *vma, - unsigned long addr, pte_t *ptep) +static inline int huge_pmd_unshare(struct mmu_gather *tlb, + struct vm_area_struct *vma, unsigned long addr, pte_t *ptep) { return 0; } +static inline void huge_pmd_unshare_flush(struct mmu_gather *tlb, + struct vm_area_struct *vma) +{ +} + static inline void adjust_range_if_pmd_sharing_possible( struct vm_area_struct *vma, unsigned long *start, unsigned long *end) @@ -432,7 +437,7 @@ static inline void move_hugetlb_state(st { } -static inline long hugetlb_change_protection( +static inline long hugetlb_change_protection(struct mmu_gather *tlb, struct vm_area_struct *vma, unsigned long address, unsigned long end, pgprot_t newprot, unsigned long cp_flags) --- a/mm/hugetlb.c~mm-hugetlb-fix-excessive-ipi-broadcasts-when-unsharing-pmd-tables-using-mmu_gather +++ a/mm/hugetlb.c @@ -5096,8 +5096,9 @@ int move_hugetlb_page_tables(struct vm_a unsigned long last_addr_mask; pte_t *src_pte, *dst_pte; struct mmu_notifier_range range; - bool shared_pmd = false; + struct mmu_gather tlb; + tlb_gather_mmu(&tlb, vma->vm_mm); mmu_notifier_range_init(&range, MMU_NOTIFY_CLEAR, 0, mm, old_addr, old_end); adjust_range_if_pmd_sharing_possible(vma, &range.start, &range.end); @@ -5122,12 +5123,12 @@ int move_hugetlb_page_tables(struct vm_a if (huge_pte_none(huge_ptep_get(mm, old_addr, src_pte))) continue; - if (huge_pmd_unshare(mm, vma, old_addr, src_pte)) { - shared_pmd = true; + if (huge_pmd_unshare(&tlb, vma, old_addr, src_pte)) { old_addr |= last_addr_mask; new_addr |= last_addr_mask; continue; } + tlb_remove_huge_tlb_entry(h, &tlb, src_pte, old_addr); dst_pte = huge_pte_alloc(mm, new_vma, new_addr, sz); if (!dst_pte) @@ -5136,13 +5137,13 @@ int move_hugetlb_page_tables(struct vm_a move_huge_pte(vma, old_addr, new_addr, src_pte, dst_pte, sz); } - if (shared_pmd) - flush_hugetlb_tlb_range(vma, range.start, range.end); - else - flush_hugetlb_tlb_range(vma, old_end - len, old_end); + tlb_flush_mmu_tlbonly(&tlb); + huge_pmd_unshare_flush(&tlb, vma); + mmu_notifier_invalidate_range_end(&range); i_mmap_unlock_write(mapping); hugetlb_vma_unlock_write(vma); + tlb_finish_mmu(&tlb); return len + old_addr - old_end; } @@ -5161,7 +5162,6 @@ void __unmap_hugepage_range(struct mmu_g unsigned long sz = huge_page_size(h); bool adjust_reservation; unsigned long last_addr_mask; - bool force_flush = false; WARN_ON(!is_vm_hugetlb_page(vma)); BUG_ON(start & ~huge_page_mask(h)); @@ -5184,10 +5184,8 @@ void __unmap_hugepage_range(struct mmu_g } ptl = huge_pte_lock(h, mm, ptep); - if (huge_pmd_unshare(mm, vma, address, ptep)) { + if (huge_pmd_unshare(tlb, vma, address, ptep)) { spin_unlock(ptl); - tlb_flush_pmd_range(tlb, address & PUD_MASK, PUD_SIZE); - force_flush = true; address |= last_addr_mask; continue; } @@ -5303,14 +5301,7 @@ void __unmap_hugepage_range(struct mmu_g } tlb_end_vma(tlb, vma); - /* - * There is nothing protecting a previously-shared page table that we - * unshared through huge_pmd_unshare() from getting freed after we - * release i_mmap_rwsem, so flush the TLB now. If huge_pmd_unshare() - * succeeded, flush the range corresponding to the pud. - */ - if (force_flush) - tlb_flush_mmu_tlbonly(tlb); + huge_pmd_unshare_flush(tlb, vma); } void __hugetlb_zap_begin(struct vm_area_struct *vma, @@ -6399,7 +6390,7 @@ out_release_nounlock: } #endif /* CONFIG_USERFAULTFD */ -long hugetlb_change_protection(struct vm_area_struct *vma, +long hugetlb_change_protection(struct mmu_gather *tlb, struct vm_area_struct *vma, unsigned long address, unsigned long end, pgprot_t newprot, unsigned long cp_flags) { @@ -6409,7 +6400,6 @@ long hugetlb_change_protection(struct vm pte_t pte; struct hstate *h = hstate_vma(vma); long pages = 0, psize = huge_page_size(h); - bool shared_pmd = false; struct mmu_notifier_range range; unsigned long last_addr_mask; bool uffd_wp = cp_flags & MM_CP_UFFD_WP; @@ -6452,7 +6442,7 @@ long hugetlb_change_protection(struct vm } } ptl = huge_pte_lock(h, mm, ptep); - if (huge_pmd_unshare(mm, vma, address, ptep)) { + if (huge_pmd_unshare(tlb, vma, address, ptep)) { /* * When uffd-wp is enabled on the vma, unshare * shouldn't happen at all. Warn about it if it @@ -6461,7 +6451,6 @@ long hugetlb_change_protection(struct vm WARN_ON_ONCE(uffd_wp || uffd_wp_resolve); pages++; spin_unlock(ptl); - shared_pmd = true; address |= last_addr_mask; continue; } @@ -6522,22 +6511,16 @@ long hugetlb_change_protection(struct vm pte = huge_pte_clear_uffd_wp(pte); huge_ptep_modify_prot_commit(vma, address, ptep, old_pte, pte); pages++; + tlb_remove_huge_tlb_entry(h, tlb, ptep, address); } next: spin_unlock(ptl); cond_resched(); } - /* - * There is nothing protecting a previously-shared page table that we - * unshared through huge_pmd_unshare() from getting freed after we - * release i_mmap_rwsem, so flush the TLB now. If huge_pmd_unshare() - * succeeded, flush the range corresponding to the pud. - */ - if (shared_pmd) - flush_hugetlb_tlb_range(vma, range.start, range.end); - else - flush_hugetlb_tlb_range(vma, start, end); + + tlb_flush_mmu_tlbonly(tlb); + huge_pmd_unshare_flush(tlb, vma); /* * No need to call mmu_notifier_arch_invalidate_secondary_tlbs() we are * downgrading page table protection not changing it to point to a new @@ -6904,18 +6887,27 @@ out: return pte; } -/* - * unmap huge page backed by shared pte. +/** + * huge_pmd_unshare - Unmap a pmd table if it is shared by multiple users + * @tlb: the current mmu_gather. + * @vma: the vma covering the pmd table. + * @addr: the address we are trying to unshare. + * @ptep: pointer into the (pmd) page table. + * + * Called with the page table lock held, the i_mmap_rwsem held in write mode + * and the hugetlb vma lock held in write mode. * - * Called with page table lock held. + * Note: The caller must call huge_pmd_unshare_flush() before dropping the + * i_mmap_rwsem. * - * returns: 1 successfully unmapped a shared pte page - * 0 the underlying pte page is not shared, or it is the last user + * Returns: 1 if it was a shared PMD table and it got unmapped, or 0 if it + * was not a shared PMD table. */ -int huge_pmd_unshare(struct mm_struct *mm, struct vm_area_struct *vma, - unsigned long addr, pte_t *ptep) +int huge_pmd_unshare(struct mmu_gather *tlb, struct vm_area_struct *vma, + unsigned long addr, pte_t *ptep) { unsigned long sz = huge_page_size(hstate_vma(vma)); + struct mm_struct *mm = vma->vm_mm; pgd_t *pgd = pgd_offset(mm, addr); p4d_t *p4d = p4d_offset(pgd, addr); pud_t *pud = pud_offset(p4d, addr); @@ -6927,18 +6919,36 @@ int huge_pmd_unshare(struct mm_struct *m i_mmap_assert_write_locked(vma->vm_file->f_mapping); hugetlb_vma_assert_locked(vma); pud_clear(pud); - /* - * Once our caller drops the rmap lock, some other process might be - * using this page table as a normal, non-hugetlb page table. - * Wait for pending gup_fast() in other threads to finish before letting - * that happen. - */ - tlb_remove_table_sync_one(); - ptdesc_pmd_pts_dec(virt_to_ptdesc(ptep)); + + tlb_unshare_pmd_ptdesc(tlb, virt_to_ptdesc(ptep), addr); + mm_dec_nr_pmds(mm); return 1; } +/* + * huge_pmd_unshare_flush - Complete a sequence of huge_pmd_unshare() calls + * @tlb: the current mmu_gather. + * @vma: the vma covering the pmd table. + * + * Perform necessary TLB flushes or IPI broadcasts to synchronize PMD table + * unsharing with concurrent page table walkers (TLB, GUP-fast, etc.). + * + * This function must be called after a sequence of huge_pmd_unshare() + * calls while still holding the i_mmap_rwsem. + */ +void huge_pmd_unshare_flush(struct mmu_gather *tlb, struct vm_area_struct *vma) +{ + /* + * We must synchronize page table unsharing such that nobody will + * try reusing a previously-shared page table while it might still + * be in use by previous sharers (TLB, GUP_fast). + */ + i_mmap_assert_write_locked(vma->vm_file->f_mapping); + + tlb_flush_unshared_tables(tlb); +} + #else /* !CONFIG_HUGETLB_PMD_PAGE_TABLE_SHARING */ pte_t *huge_pmd_share(struct mm_struct *mm, struct vm_area_struct *vma, @@ -6947,12 +6957,16 @@ pte_t *huge_pmd_share(struct mm_struct * return NULL; } -int huge_pmd_unshare(struct mm_struct *mm, struct vm_area_struct *vma, - unsigned long addr, pte_t *ptep) +int huge_pmd_unshare(struct mmu_gather *tlb, struct vm_area_struct *vma, + unsigned long addr, pte_t *ptep) { return 0; } +void huge_pmd_unshare_flush(struct mmu_gather *tlb, struct vm_area_struct *vma) +{ +} + void adjust_range_if_pmd_sharing_possible(struct vm_area_struct *vma, unsigned long *start, unsigned long *end) { @@ -7219,6 +7233,7 @@ static void hugetlb_unshare_pmds(struct unsigned long sz = huge_page_size(h); struct mm_struct *mm = vma->vm_mm; struct mmu_notifier_range range; + struct mmu_gather tlb; unsigned long address; spinlock_t *ptl; pte_t *ptep; @@ -7229,6 +7244,7 @@ static void hugetlb_unshare_pmds(struct if (start >= end) return; + tlb_gather_mmu(&tlb, mm); flush_cache_range(vma, start, end); /* * No need to call adjust_range_if_pmd_sharing_possible(), because @@ -7248,10 +7264,10 @@ static void hugetlb_unshare_pmds(struct if (!ptep) continue; ptl = huge_pte_lock(h, mm, ptep); - huge_pmd_unshare(mm, vma, address, ptep); + huge_pmd_unshare(&tlb, vma, address, ptep); spin_unlock(ptl); } - flush_hugetlb_tlb_range(vma, start, end); + huge_pmd_unshare_flush(&tlb, vma); if (take_locks) { i_mmap_unlock_write(vma->vm_file->f_mapping); hugetlb_vma_unlock_write(vma); @@ -7261,6 +7277,7 @@ static void hugetlb_unshare_pmds(struct * Documentation/mm/mmu_notifier.rst. */ mmu_notifier_invalidate_range_end(&range); + tlb_finish_mmu(&tlb); } /* --- a/mm/mmu_gather.c~mm-hugetlb-fix-excessive-ipi-broadcasts-when-unsharing-pmd-tables-using-mmu_gather +++ a/mm/mmu_gather.c @@ -469,6 +469,12 @@ void tlb_gather_mmu_fullmm(struct mmu_ga void tlb_finish_mmu(struct mmu_gather *tlb) { /* + * We expect an earlier huge_pmd_unshare_flush() call to sort this out, + * due to complicated locking requirements with page table unsharing. + */ + VM_WARN_ON_ONCE(tlb->fully_unshared_tables); + + /* * If there are parallel threads are doing PTE changes on same range * under non-exclusive lock (e.g., mmap_lock read-side) but defer TLB * flush by batching, one thread may end up seeing inconsistent PTEs --- a/mm/mprotect.c~mm-hugetlb-fix-excessive-ipi-broadcasts-when-unsharing-pmd-tables-using-mmu_gather +++ a/mm/mprotect.c @@ -652,7 +652,7 @@ long change_protection(struct mmu_gather #endif if (is_vm_hugetlb_page(vma)) - pages = hugetlb_change_protection(vma, start, end, newprot, + pages = hugetlb_change_protection(tlb, vma, start, end, newprot, cp_flags); else pages = change_protection_range(tlb, vma, start, end, newprot, --- a/mm/rmap.c~mm-hugetlb-fix-excessive-ipi-broadcasts-when-unsharing-pmd-tables-using-mmu_gather +++ a/mm/rmap.c @@ -76,7 +76,7 @@ #include <linux/mm_inline.h> #include <linux/oom.h> -#include <asm/tlbflush.h> +#include <asm/tlb.h> #define CREATE_TRACE_POINTS #include <trace/events/migrate.h> @@ -2008,13 +2008,17 @@ static bool try_to_unmap_one(struct foli * if unsuccessful. */ if (!anon) { + struct mmu_gather tlb; + VM_BUG_ON(!(flags & TTU_RMAP_LOCKED)); if (!hugetlb_vma_trylock_write(vma)) goto walk_abort; - if (huge_pmd_unshare(mm, vma, address, pvmw.pte)) { + + tlb_gather_mmu(&tlb, mm); + if (huge_pmd_unshare(&tlb, vma, address, pvmw.pte)) { hugetlb_vma_unlock_write(vma); - flush_tlb_range(vma, - range.start, range.end); + huge_pmd_unshare_flush(&tlb, vma); + tlb_finish_mmu(&tlb); /* * The PMD table was unmapped, * consequently unmapping the folio. @@ -2022,6 +2026,7 @@ static bool try_to_unmap_one(struct foli goto walk_done; } hugetlb_vma_unlock_write(vma); + tlb_finish_mmu(&tlb); } pteval = huge_ptep_clear_flush(vma, address, pvmw.pte); if (pte_dirty(pteval)) @@ -2398,17 +2403,20 @@ static bool try_to_migrate_one(struct fo * fail if unsuccessful. */ if (!anon) { + struct mmu_gather tlb; + VM_BUG_ON(!(flags & TTU_RMAP_LOCKED)); if (!hugetlb_vma_trylock_write(vma)) { page_vma_mapped_walk_done(&pvmw); ret = false; break; } - if (huge_pmd_unshare(mm, vma, address, pvmw.pte)) { - hugetlb_vma_unlock_write(vma); - flush_tlb_range(vma, - range.start, range.end); + tlb_gather_mmu(&tlb, mm); + if (huge_pmd_unshare(&tlb, vma, address, pvmw.pte)) { + hugetlb_vma_unlock_write(vma); + huge_pmd_unshare_flush(&tlb, vma); + tlb_finish_mmu(&tlb); /* * The PMD table was unmapped, * consequently unmapping the folio. @@ -2417,6 +2425,7 @@ static bool try_to_migrate_one(struct fo break; } hugetlb_vma_unlock_write(vma); + tlb_finish_mmu(&tlb); } /* Nuke the hugetlb page table entry */ pteval = huge_ptep_clear_flush(vma, address, pvmw.pte); _ Patches currently in -mm which might be from david(a)kernel.org are

1 week, 3 days

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[merged mm-stable] mm-hugetlb-fix-hugetlb_pmd_shared.patch removed from -mm tree

by Andrew Morton

The quilt patch titled Subject: mm/hugetlb: fix hugetlb_pmd_shared() has been removed from the -mm tree. Its filename was mm-hugetlb-fix-hugetlb_pmd_shared.patch This patch was dropped because it was merged into the mm-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: "David Hildenbrand (Red Hat)" <david(a)kernel.org> Subject: mm/hugetlb: fix hugetlb_pmd_shared() Date: Fri, 5 Dec 2025 22:35:55 +0100 Patch series "mm/hugetlb: fixes for PMD table sharing (incl. using mmu_gather)". One functional fix, one performance regression fix, and two related comment fixes. I cleaned up my prototype I recently shared [1] for the performance fix, deferring most of the cleanups I had in the prototype to a later point. While doing that I identified the other things. The goal of this patch set is to be backported to stable trees "fairly" easily. At least patch #1 and #4. Patch #1 fixes hugetlb_pmd_shared() not detecting any sharing Patch #2 + #3 are simple comment fixes that patch #4 interacts with. Patch #4 is a fix for the reported performance regression due to excessive IPI broadcasts during fork()+exit(). The last patch is all about TLB flushes, IPIs and mmu_gather. Read: complicated I added as much comments + description that I possibly could, and I am hoping for review from Jann. There are plenty of cleanups in the future to be had + one reasonable optimization on x86. But that's all out of scope for this series. This patch (of 4): We switched from (wrongly) using the page count to an independent shared count. Now, shared page tables have a refcount of 1 (excluding speculative references) and instead use ptdesc->pt_share_count to identify sharing. We didn't convert hugetlb_pmd_shared(), so right now, we would never detect a shared PMD table as such, because sharing/unsharing no longer touches the refcount of a PMD table. Page migration, like mbind() or migrate_pages() would allow for migrating folios mapped into such shared PMD tables, even though the folios are not exclusive. In smaps we would account them as "private" although they are "shared", and we would be wrongly setting the PM_MMAP_EXCLUSIVE in the pagemap interface. Fix it by properly using ptdesc_pmd_is_shared() in hugetlb_pmd_shared(). Link: https://lkml.kernel.org/r/20251205213558.2980480-1-david@kernel.org Link: https://lkml.kernel.org/r/20251205213558.2980480-2-david@kernel.org Link: https://lore.kernel.org/all/8cab934d-4a56-44aa-b641-bfd7e23bd673@kernel.org/ [1] Fixes: 59d9094df3d7 ("mm: hugetlb: independent PMD page table shared count") Signed-off-by: David Hildenbrand (Red Hat) <david(a)kernel.org> Tested-by: Laurence Oberman <loberman(a)redhat.com> Reviewed-by: Rik van Riel <riel(a)surriel.com> Reviewed-by: Lance Yang <lance.yang(a)linux.dev> Cc: Liu Shixin <liushixin2(a)huawei.com> Cc: "Aneesh Kumar K.V" <aneesh.kumar(a)kernel.org> Cc: Arnd Bergmann <arnd(a)arndb.de> Cc: Jann Horn <jannh(a)google.com> Cc: Liam Howlett <liam.howlett(a)oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes(a)oracle.com> Cc: Muchun Song <muchun.song(a)linux.dev> Cc: Nadav Amit <nadav.amit(a)gmail.com> Cc: Nicholas Piggin <npiggin(a)gmail.com> Cc: Oscar Salvador <osalvador(a)suse.de> Cc: Peter Zijlstra <peterz(a)infradead.org> Cc: Prakash Sangappa <prakash.sangappa(a)oracle.com> Cc: Vlastimil Babka <vbabka(a)suse.cz> Cc: Will Deacon <will(a)kernel.org> Cc: Uschakow, Stanislav" <suschako(a)amazon.de> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- include/linux/hugetlb.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/include/linux/hugetlb.h~mm-hugetlb-fix-hugetlb_pmd_shared +++ a/include/linux/hugetlb.h @@ -1326,7 +1326,7 @@ static inline __init void hugetlb_cma_re #ifdef CONFIG_HUGETLB_PMD_PAGE_TABLE_SHARING static inline bool hugetlb_pmd_shared(pte_t *pte) { - return page_count(virt_to_page(pte)) > 1; + return ptdesc_pmd_is_shared(virt_to_ptdesc(pte)); } #else static inline bool hugetlb_pmd_shared(pte_t *pte) _ Patches currently in -mm which might be from david(a)kernel.org are

1 week, 3 days

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[merged mm-stable] powerpc-pseries-cmm-adjust-balloon_migrate-when-migrating-pages.patch removed from -mm tree

by Andrew Morton

The quilt patch titled Subject: powerpc/pseries/cmm: adjust BALLOON_MIGRATE when migrating pages has been removed from the -mm tree. Its filename was powerpc-pseries-cmm-adjust-balloon_migrate-when-migrating-pages.patch This patch was dropped because it was merged into the mm-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: David Hildenbrand <david(a)redhat.com> Subject: powerpc/pseries/cmm: adjust BALLOON_MIGRATE when migrating pages Date: Tue, 21 Oct 2025 12:06:06 +0200 Let's properly adjust BALLOON_MIGRATE like the other drivers. Note that the INFLATE/DEFLATE events are triggered from the core when enqueueing/dequeueing pages. This was found by code inspection. Link: https://lkml.kernel.org/r/20251021100606.148294-3-david@redhat.com Fixes: fe030c9b85e6 ("powerpc/pseries/cmm: Implement balloon compaction") Signed-off-by: David Hildenbrand <david(a)redhat.com> Reviewed-by: Ritesh Harjani (IBM) <ritesh.list(a)gmail.com> Cc: Christophe Leroy <christophe.leroy(a)csgroup.eu> Cc: Madhavan Srinivasan <maddy(a)linux.ibm.com> Cc: Michael Ellerman <mpe(a)ellerman.id.au> Cc: Nicholas Piggin <npiggin(a)gmail.com> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- arch/powerpc/platforms/pseries/cmm.c | 1 + 1 file changed, 1 insertion(+) --- a/arch/powerpc/platforms/pseries/cmm.c~powerpc-pseries-cmm-adjust-balloon_migrate-when-migrating-pages +++ a/arch/powerpc/platforms/pseries/cmm.c @@ -532,6 +532,7 @@ static int cmm_migratepage(struct balloo spin_lock_irqsave(&b_dev_info->pages_lock, flags); balloon_page_insert(b_dev_info, newpage); + __count_vm_event(BALLOON_MIGRATE); b_dev_info->isolated_pages--; spin_unlock_irqrestore(&b_dev_info->pages_lock, flags); _ Patches currently in -mm which might be from david(a)redhat.com are

1 week, 3 days

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[merged mm-stable] powerpc-pseries-cmm-call-balloon_devinfo_init-also-without-config_balloon_compaction.patch removed from -mm tree

by Andrew Morton

The quilt patch titled Subject: powerpc/pseries/cmm: call balloon_devinfo_init() also without CONFIG_BALLOON_COMPACTION has been removed from the -mm tree. Its filename was powerpc-pseries-cmm-call-balloon_devinfo_init-also-without-config_balloon_compaction.patch This patch was dropped because it was merged into the mm-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: David Hildenbrand <david(a)redhat.com> Subject: powerpc/pseries/cmm: call balloon_devinfo_init() also without CONFIG_BALLOON_COMPACTION Date: Tue, 21 Oct 2025 12:06:05 +0200 Patch series "powerpc/pseries/cmm: two smaller fixes". Two smaller fixes identified while doing a bigger rework. This patch (of 2): We always have to initialize the balloon_dev_info, even when compaction is not configured in: otherwise the containing list and the lock are left uninitialized. Likely not many such configs exist in practice, but let's CC stable to be sure. This was found by code inspection. Link: https://lkml.kernel.org/r/20251021100606.148294-1-david@redhat.com Link: https://lkml.kernel.org/r/20251021100606.148294-2-david@redhat.com Fixes: fe030c9b85e6 ("powerpc/pseries/cmm: Implement balloon compaction") Signed-off-by: David Hildenbrand <david(a)redhat.com> Reviewed-by: Ritesh Harjani (IBM) <ritesh.list(a)gmail.com> Cc: Christophe Leroy <christophe.leroy(a)csgroup.eu> Cc: Madhavan Srinivasan <maddy(a)linux.ibm.com> Cc: Michael Ellerman <mpe(a)ellerman.id.au> Cc: Nicholas Piggin <npiggin(a)gmail.com> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- arch/powerpc/platforms/pseries/cmm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/arch/powerpc/platforms/pseries/cmm.c~powerpc-pseries-cmm-call-balloon_devinfo_init-also-without-config_balloon_compaction +++ a/arch/powerpc/platforms/pseries/cmm.c @@ -550,7 +550,6 @@ static int cmm_migratepage(struct balloo static void cmm_balloon_compaction_init(void) { - balloon_devinfo_init(&b_dev_info); b_dev_info.migratepage = cmm_migratepage; } #else /* CONFIG_BALLOON_COMPACTION */ @@ -572,6 +571,7 @@ static int cmm_init(void) if (!firmware_has_feature(FW_FEATURE_CMO) && !simulate) return -EOPNOTSUPP; + balloon_devinfo_init(&b_dev_info); cmm_balloon_compaction_init(); rc = register_oom_notifier(&cmm_oom_nb); _ Patches currently in -mm which might be from david(a)redhat.com are

1 week, 3 days

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[PATCH] Revert "drm/amd/display: Fix pbn to kbps Conversion"

by Mario Limonciello

Deeply daisy chained DP/MST displays are no longer able to light up. This reverts commit 1788ef30725da53face7e311cdf62ad65fababcd. Cc: Jerry Zuo <jerry.zuo(a)amd.com> Cc: stable(a)vger.kernel.org # 6.17+ Reported-by: nat(a)nullable.se Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/4756 Signed-off-by: Mario Limonciello <mario.limonciello(a)amd.com> --- .../display/amdgpu_dm/amdgpu_dm_mst_types.c | 59 +++++++++++-------- 1 file changed, 36 insertions(+), 23 deletions(-) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c index dbd1da4d85d3..5e92eaa67aa3 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c @@ -884,28 +884,26 @@ struct dsc_mst_fairness_params { }; #if defined(CONFIG_DRM_AMD_DC_FP) -static uint64_t kbps_to_pbn(int kbps, bool is_peak_pbn) +static uint16_t get_fec_overhead_multiplier(struct dc_link *dc_link) { - uint64_t effective_kbps = (uint64_t)kbps; + u8 link_coding_cap; + uint16_t fec_overhead_multiplier_x1000 = PBN_FEC_OVERHEAD_MULTIPLIER_8B_10B; - if (is_peak_pbn) { // add 0.6% (1006/1000) overhead into effective kbps - effective_kbps *= 1006; - effective_kbps = div_u64(effective_kbps, 1000); - } + link_coding_cap = dc_link_dp_mst_decide_link_encoding_format(dc_link); + if (link_coding_cap == DP_128b_132b_ENCODING) + fec_overhead_multiplier_x1000 = PBN_FEC_OVERHEAD_MULTIPLIER_128B_132B; - return (uint64_t) DIV64_U64_ROUND_UP(effective_kbps * 64, (54 * 8 * 1000)); + return fec_overhead_multiplier_x1000; } -static uint32_t pbn_to_kbps(unsigned int pbn, bool with_margin) +static int kbps_to_peak_pbn(int kbps, uint16_t fec_overhead_multiplier_x1000) { - uint64_t pbn_effective = (uint64_t)pbn; - - if (with_margin) // deduct 0.6% (994/1000) overhead from effective pbn - pbn_effective *= (1000000 / PEAK_FACTOR_X1000); - else - pbn_effective *= 1000; + u64 peak_kbps = kbps; - return DIV_U64_ROUND_UP(pbn_effective * 8 * 54, 64); + peak_kbps *= 1006; + peak_kbps *= fec_overhead_multiplier_x1000; + peak_kbps = div_u64(peak_kbps, 1000 * 1000); + return (int) DIV64_U64_ROUND_UP(peak_kbps * 64, (54 * 8 * 1000)); } static void set_dsc_configs_from_fairness_vars(struct dsc_mst_fairness_params *params, @@ -976,7 +974,7 @@ static int bpp_x16_from_pbn(struct dsc_mst_fairness_params param, int pbn) dc_dsc_get_default_config_option(param.sink->ctx->dc, &dsc_options); dsc_options.max_target_bpp_limit_override_x16 = drm_connector->display_info.max_dsc_bpp * 16; - kbps = pbn_to_kbps(pbn, false); + kbps = div_u64((u64)pbn * 994 * 8 * 54, 64); dc_dsc_compute_config( param.sink->ctx->dc->res_pool->dscs[0], &param.sink->dsc_caps.dsc_dec_caps, @@ -1005,11 +1003,12 @@ static int increase_dsc_bpp(struct drm_atomic_state *state, int link_timeslots_used; int fair_pbn_alloc; int ret = 0; + uint16_t fec_overhead_multiplier_x1000 = get_fec_overhead_multiplier(dc_link); for (i = 0; i < count; i++) { if (vars[i + k].dsc_enabled) { initial_slack[i] = - kbps_to_pbn(params[i].bw_range.max_kbps, false) - vars[i + k].pbn; + kbps_to_peak_pbn(params[i].bw_range.max_kbps, fec_overhead_multiplier_x1000) - vars[i + k].pbn; bpp_increased[i] = false; remaining_to_increase += 1; } else { @@ -1105,6 +1104,7 @@ static int try_disable_dsc(struct drm_atomic_state *state, int next_index; int remaining_to_try = 0; int ret; + uint16_t fec_overhead_multiplier_x1000 = get_fec_overhead_multiplier(dc_link); int var_pbn; for (i = 0; i < count; i++) { @@ -1137,7 +1137,7 @@ static int try_disable_dsc(struct drm_atomic_state *state, DRM_DEBUG_DRIVER("MST_DSC index #%d, try no compression\n", next_index); var_pbn = vars[next_index].pbn; - vars[next_index].pbn = kbps_to_pbn(params[next_index].bw_range.stream_kbps, true); + vars[next_index].pbn = kbps_to_peak_pbn(params[next_index].bw_range.stream_kbps, fec_overhead_multiplier_x1000); ret = drm_dp_atomic_find_time_slots(state, params[next_index].port->mgr, params[next_index].port, @@ -1197,6 +1197,7 @@ static int compute_mst_dsc_configs_for_link(struct drm_atomic_state *state, int count = 0; int i, k, ret; bool debugfs_overwrite = false; + uint16_t fec_overhead_multiplier_x1000 = get_fec_overhead_multiplier(dc_link); struct drm_connector_state *new_conn_state; memset(params, 0, sizeof(params)); @@ -1277,7 +1278,7 @@ static int compute_mst_dsc_configs_for_link(struct drm_atomic_state *state, DRM_DEBUG_DRIVER("MST_DSC Try no compression\n"); for (i = 0; i < count; i++) { vars[i + k].aconnector = params[i].aconnector; - vars[i + k].pbn = kbps_to_pbn(params[i].bw_range.stream_kbps, false); + vars[i + k].pbn = kbps_to_peak_pbn(params[i].bw_range.stream_kbps, fec_overhead_multiplier_x1000); vars[i + k].dsc_enabled = false; vars[i + k].bpp_x16 = 0; ret = drm_dp_atomic_find_time_slots(state, params[i].port->mgr, params[i].port, @@ -1299,7 +1300,7 @@ static int compute_mst_dsc_configs_for_link(struct drm_atomic_state *state, DRM_DEBUG_DRIVER("MST_DSC Try max compression\n"); for (i = 0; i < count; i++) { if (params[i].compression_possible && params[i].clock_force_enable != DSC_CLK_FORCE_DISABLE) { - vars[i + k].pbn = kbps_to_pbn(params[i].bw_range.min_kbps, false); + vars[i + k].pbn = kbps_to_peak_pbn(params[i].bw_range.min_kbps, fec_overhead_multiplier_x1000); vars[i + k].dsc_enabled = true; vars[i + k].bpp_x16 = params[i].bw_range.min_target_bpp_x16; ret = drm_dp_atomic_find_time_slots(state, params[i].port->mgr, @@ -1307,7 +1308,7 @@ static int compute_mst_dsc_configs_for_link(struct drm_atomic_state *state, if (ret < 0) return ret; } else { - vars[i + k].pbn = kbps_to_pbn(params[i].bw_range.stream_kbps, false); + vars[i + k].pbn = kbps_to_peak_pbn(params[i].bw_range.stream_kbps, fec_overhead_multiplier_x1000); vars[i + k].dsc_enabled = false; vars[i + k].bpp_x16 = 0; ret = drm_dp_atomic_find_time_slots(state, params[i].port->mgr, @@ -1762,6 +1763,18 @@ int pre_validate_dsc(struct drm_atomic_state *state, return ret; } +static uint32_t kbps_from_pbn(unsigned int pbn) +{ + uint64_t kbps = (uint64_t)pbn; + + kbps *= (1000000 / PEAK_FACTOR_X1000); + kbps *= 8; + kbps *= 54; + kbps /= 64; + + return (uint32_t)kbps; +} + static bool is_dsc_common_config_possible(struct dc_stream_state *stream, struct dc_dsc_bw_range *bw_range) { @@ -1860,7 +1873,7 @@ enum dc_status dm_dp_mst_is_port_support_mode( dc_link_get_highest_encoding_format(stream->link)); cur_link_settings = stream->link->verified_link_cap; root_link_bw_in_kbps = dc_link_bandwidth_kbps(aconnector->dc_link, &cur_link_settings); - virtual_channel_bw_in_kbps = pbn_to_kbps(aconnector->mst_output_port->full_pbn, true); + virtual_channel_bw_in_kbps = kbps_from_pbn(aconnector->mst_output_port->full_pbn); /* pick the end to end bw bottleneck */ end_to_end_bw_in_kbps = min(root_link_bw_in_kbps, virtual_channel_bw_in_kbps); @@ -1913,7 +1926,7 @@ enum dc_status dm_dp_mst_is_port_support_mode( immediate_upstream_port = aconnector->mst_output_port->parent->port_parent; if (immediate_upstream_port) { - virtual_channel_bw_in_kbps = pbn_to_kbps(immediate_upstream_port->full_pbn, true); + virtual_channel_bw_in_kbps = kbps_from_pbn(immediate_upstream_port->full_pbn); virtual_channel_bw_in_kbps = min(root_link_bw_in_kbps, virtual_channel_bw_in_kbps); } else { /* For topology LCT 1 case - only one mstb*/ -- 2.51.2

1 week, 3 days

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[PATCH] Revert "wifi: ath12k: Enable REO queue lookup table feature on QCN9274 hw2.0"

by Oliver Sedlbauer

This reverts commit 3b5e5185881edf4ee5a1af575e3aedac4a38a764. The REO queue lookup table feature was enabled in 6.12.y due to an upstream backport, but it causes severe RX performance degradation on QCN9274 hw2.0 devices. With this feature enabled, the vast majority of received packets are dropped, reducing throughput drastically and making the device nearly unusable. Reverting this change restores full RX performance. Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.5-01651-QCAHKSWPL_SILICONZ-1 Fixes: 3b5e5185881e ("wifi: ath12k: Enable REO queue lookup table feature on QCN9274 hw2.0") Signed-off-by: Oliver Sedlbauer <os(a)dev.tdt.de> --- Note: This commit reverts a backport that was not a fix. The backported change breaks previously working behavior on QCN9274 hw2.0 devices and should not have been applied to the 6.12.y stable kernel. drivers/net/wireless/ath/ath12k/hw.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/wireless/ath/ath12k/hw.c b/drivers/net/wireless/ath/ath12k/hw.c index 057ef2d282b2..e3eb22bb9e1c 100644 --- a/drivers/net/wireless/ath/ath12k/hw.c +++ b/drivers/net/wireless/ath/ath12k/hw.c @@ -1084,7 +1084,7 @@ static const struct ath12k_hw_params ath12k_hw_params[] = { .download_calib = true, .supports_suspend = false, .tcl_ring_retry = true, - .reoq_lut_support = true, + .reoq_lut_support = false, .supports_shadow_regs = false, .num_tcl_banks = 48, -- 2.39.5

1 week, 3 days

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[PATCH 5.10 000/300] 5.10.247-rc1 review

by Greg Kroah-Hartman

This is the start of the stable review cycle for the 5.10.247 release. There are 300 patches in this series, all will be posted as a response to this one. If anyone has any issues with these being applied, please let me know. Responses should be made by Fri, 05 Dec 2025 15:23:16 +0000. Anything received after that time might be too late. The whole patch series can be found in one patch at: https://www.kernel.org/pub/linux/kernel/v5.x/stable-review/patch-5.10.247-r… or in the git tree and branch at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.10.y and the diffstat can be found below. thanks, greg k-h ------------- Pseudo-Shortlog of commits: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Linux 5.10.247-rc1 Florian Westphal <fw(a)strlen.de> netfilter: nf_set_pipapo_avx2: fix initial map fill Vasiliy Kovalev <kovalev(a)altlinux.org> ovl: fix UAF in ovl_dentry_update_reval by moving dput() in ovl_link_up Owen Gu <guhuinan(a)xiaomi.com> usb: uas: fix urb unmapping issue when the uas device is remove during ongoing data transfer Claudiu Beznea <claudiu.beznea.uj(a)bp.renesas.com> usb: renesas_usbhs: Fix synchronous external abort on unbind Jameson Thies <jthies(a)google.com> usb: typec: ucsi: psy: Set max current to zero when disconnected Paulo Alcantara <pc(a)manguebit.org> smb: client: fix memory leak in cifs_construct_tcon() Jiayuan Chen <jiayuan.chen(a)linux.dev> mptcp: Fix proto fallback detection with BPF Igor Pylypiv <ipylypiv(a)google.com> scsi: pm80xx: Set phy->enable_completion only when we Florian Westphal <fw(a)strlen.de> netfilter: nf_set_pipapo: fix initial map fill Alex Lu <alex_lu(a)realsil.com.cn> Bluetooth: Add more enc key size check Jiufei Xue <jiufei.xue(a)samsung.com> fs: writeback: fix use-after-free in __mark_inode_dirty() Ilya Dryomov <idryomov(a)gmail.com> libceph: fix potential use-after-free in have_mon_and_osd_map() Alex Hung <alex.hung(a)amd.com> drm/amd/display: Check NULL before accessing Johan Hovold <johan(a)kernel.org> drm: sti: fix device leaks at component probe Vanillan Wang <vanillanwang(a)163.com> USB: serial: option: add support for Rolling RW101R-GL Oleksandr Suvorov <cryosay(a)gmail.com> USB: serial: ftdi_sio: add support for u-blox EVK-M101 Mathias Nyman <mathias.nyman(a)linux.intel.com> xhci: dbgtty: Fix data corruption when transmitting data form DbC to host Manish Nagar <manish.nagar(a)oss.qualcomm.com> usb: dwc3: Fix race condition between concurrent dwc3_remove_requests() call paths Tianchu Chen <flynnnchen(a)tencent.com> usb: storage: sddr55: Reject out-of-bound new_pba Alan Stern <stern(a)rowland.harvard.edu> USB: storage: Remove subclass and protocol overrides from Novatek quirk Desnes Nunes <desnesn(a)redhat.com> usb: storage: Fix memory leak in USB bulk transport Kuen-Han Tsai <khtsai(a)google.com> usb: gadget: f_eem: Fix memory leak in eem_unwrap Miaoqian Lin <linmq006(a)gmail.com> usb: cdns3: Fix double resource release in cdns3_pci_probe Johan Hovold <johan(a)kernel.org> most: usb: fix double free on late probe failure Miaoqian Lin <linmq006(a)gmail.com> serial: amba-pl011: prefer dma_mapping_error() over explicit address checking Khairul Anuar Romli <khairul.anuar.romli(a)altera.com> firmware: stratix10-svc: fix bug in saving controller data Miaoqian Lin <linmq006(a)gmail.com> slimbus: ngd: Fix reference count leak in qcom_slim_ngd_notify_slaves Alan Borzeszkowski <alan.borzeszkowski(a)linux.intel.com> thunderbolt: Add support for Intel Wildcat Lake Mikulas Patocka <mpatocka(a)redhat.com> dm-verity: fix unreliable memory allocation Marc Kleine-Budde <mkl(a)pengutronix.de> can: sun4i_can: sun4i_can_interrupt(): fix max irq loop handling Thomas Mühlbacher <tmuehlbacher(a)posteo.net> can: sja1000: fix max irq loop handling Gui-Dong Han <hanguidong02(a)gmail.com> atm/fore200e: Fix possible data race in fore200e_open() Thomas Bogendoerfer <tsbogend(a)alpha.franken.de> MIPS: mm: kmalloc tlb_vpn array to avoid stack overflow Maciej W. Rozycki <macro(a)orcam.me.uk> MIPS: mm: Prevent a TLB shutdown on initial uniquification Christophe JAILLET <christophe.jaillet(a)wanadoo.fr> iio:common:ssp_sensors: Fix an error handling path ssp_probe() Francesco Lavra <flavra(a)baylibre.com> iio: imu: st_lsm6dsx: fix array size for st_lsm6dsx_settings fields Jiri Olsa <jolsa(a)kernel.org> Revert "perf/x86: Always store regs->ip in perf_callchain_kernel()" Hang Zhou <929513338(a)qq.com> spi: bcm63xx: fix premature CS deassertion on RX-only transactions Haotian Zhang <vulab(a)iscas.ac.cn> mailbox: mailbox-test: Fix debugfs_create_dir error checking Jiefeng Zhang <jiefeng.z.zhang(a)gmail.com> net: atlantic: fix fragment overflow handling in RX path Alexey Kodanev <aleksei.kodanev(a)bell-sw.com> net: sxgbe: fix potential NULL dereference in sxgbe_rx() Danielle Costantino <dcostantino(a)meta.com> net/mlx5e: Fix validation logic in rate limiting Kai-Heng Feng <kaihengf(a)nvidia.com> net: aquantia: Add missing descriptor cache invalidation on ATL2 Luiz Augusto von Dentz <luiz.von.dentz(a)intel.com> Bluetooth: SMP: Fix not generating mackey and ltk when repairing Seungjin Bae <eeodqql09(a)gmail.com> can: kvaser_usb: leaf: Fix potential infinite loop in command parsers Seungjin Bae <eeodqql09(a)gmail.com> Input: pegasus-notetaker - fix potential out-of-bounds access Vincent Mailhol <mailhol.vincent(a)wanadoo.fr> Input: remove third argument of usb_maxpacket() Vincent Mailhol <mailhol.vincent(a)wanadoo.fr> usb: deprecate the third argument of usb_maxpacket() Paolo Abeni <pabeni(a)redhat.com> mptcp: do not fallback when OoO is present Eric Dumazet <edumazet(a)google.com> mptcp: fix a race in mptcp_pm_del_add_timer() Vlastimil Babka <vbabka(a)suse.cz> mm/mempool: fix poisoning order>0 pages with HIGHMEM Fabio M. De Francesco <fabio.maria.de.francesco(a)linux.intel.com> mm/mempool: replace kmap_atomic() with kmap_local_page() Krzysztof Kozlowski <krzysztof.kozlowski(a)linaro.org> dt-bindings: pinctrl: toshiba,visconti: Fix number of items in groups Eric Dumazet <edumazet(a)google.com> mptcp: fix race condition in mptcp_schedule_work() Paolo Abeni <pabeni(a)redhat.com> mptcp: introduce mptcp_schedule_work Niklas Cassel <cassel(a)kernel.org> ata: libata-scsi: Fix system suspend for a security locked drive Sudeep Holla <sudeep.holla(a)arm.com> pmdomain: arm: scmi: Fix genpd leak on provider registration failure Miaoqian Lin <linmq006(a)gmail.com> pmdomain: imx: Fix reference count leak in imx_gpc_remove Takashi Iwai <tiwai(a)suse.de> ALSA: usb-audio: Fix potential overflow of PCM transfer buffer Breno Leitao <leitao(a)debian.org> net: netpoll: fix incorrect refcount handling causing incorrect cleanup Trond Myklebust <trond.myklebust(a)hammerspace.com> Revert "NFS: Don't set NFS_INO_REVAL_PAGECACHE in the inode cache validity" Nick Desaulniers <ndesaulniers(a)google.com> Makefile.compiler: replace cc-ifversion with compiler-specific macros Nathan Chancellor <nathan(a)kernel.org> net: qede: Initialize qede_ll_ops with designated initializer Long Li <longli(a)microsoft.com> uio_hv_generic: Set event for all channels on the device Nishanth Menon <nm(a)ti.com> net: ethernet: ti: netcp: Standardize knav_dma_open_channel to return NULL on error René Rebe <rene(a)exactco.de> ALSA: usb-audio: fix uac2 clock source at terminal parser Isaac J. Manjarres <isaacmanjarres(a)google.com> mm/mm_init: fix hash table order logging in alloc_large_system_hash() Jakub Horký <jakub.git(a)horky.net> kconfig/nconf: Initialize the default locale at startup Jakub Horký <jakub.git(a)horky.net> kconfig/mconf: Initialize the default locale at startup Shahar Shitrit <shshitrit(a)nvidia.com> net: tls: Cancel RX async resync request on rcd_delta overflow Bart Van Assche <bvanassche(a)acm.org> scsi: core: Fix a regression triggered by scsi_host_busy() Michal Luczaj <mhal(a)rbox.co> vsock: Ignore signal/timeout on connect() if already established Aleksei Nikiforov <aleksei.nikiforov(a)linux.ibm.com> s390/ctcm: Fix double-kfree Ilya Maximets <i.maximets(a)ovn.org> net: openvswitch: remove never-working support for setting nsh fields Zilin Guan <zilin(a)seu.edu.cn> mlxsw: spectrum: Fix memory leak in mlxsw_sp_flower_stats() Ma Ke <make24(a)iscas.ac.cn> drm/tegra: dc: Fix reference leak in tegra_dc_couple() Maciej W. Rozycki <macro(a)orcam.me.uk> MIPS: Malta: Fix !EVA SOC-it PCI MMIO Hamza Mahfooz <hamzamahfooz(a)linux.microsoft.com> scsi: target: tcm_loop: Fix segfault in tcm_loop_tpg_address_show() Bart Van Assche <bvanassche(a)acm.org> scsi: sg: Do not sleep in atomic context Ewan D. Milne <emilne(a)redhat.com> nvme: nvme-fc: Ensure ->ioerr_work is cancelled in nvme_fc_delete_ctrl() Dan Carpenter <dan.carpenter(a)linaro.org> Input: imx_sc_key - fix memory corruption on unload Tzung-Bi Shih <tzungbi(a)kernel.org> Input: cros_ec_keyb - fix an invalid memory access Andrey Vatoropin <a.vatoropin(a)crpt.ru> be2net: pass wrb_params in case of OS2BMC Yongpeng Yang <yangyongpeng(a)xiaomi.com> exfat: check return value of sb_min_blocksize in exfat_read_boot_sector Niravkumar L Rabara <niravkumarlaxmidas.rabara(a)altera.com> mtd: rawnand: cadence: fix DMA device NULL pointer dereference Zhang Heng <zhangheng(a)kylinos.cn> HID: quirks: work around VID/PID conflict for 0x4c4a/0x4155 Abdun Nihaal <nihaal(a)cse.iitm.ac.in> isdn: mISDN: hfcsusb: fix memory leak in hfcsusb_probe() Niravkumar L Rabara <niravkumarlaxmidas.rabara(a)altera.com> EDAC/altera: Use INTTEST register for Ethernet and USB SBE injection Niravkumar L Rabara <niravkumarlaxmidas.rabara(a)altera.com> EDAC/altera: Handle OCRAM ECC enable after warm reset Hans de Goede <hansg(a)kernel.org> spi: Try to get ACPI GPIO IRQ earlier Wei Yang <albinwyang(a)tencent.com> fs/proc: fix uaf in proc_readdir_de() Chuang Wang <nashuiliang(a)gmail.com> ipv4: route: Prevent rt_bind_exception() from rebinding stale fnhe Nate Karstens <nate.karstens(a)garmin.com> strparser: Fix signed/unsigned mismatch bug Peter Oberparleiter <oberpar(a)linux.ibm.com> gcov: add support for GCC 15 Olga Kornievskaia <okorniev(a)redhat.com> NFSD: free copynotify stateid in nfs4_free_ol_stateid() Masami Ichikawa <masami256(a)gmail.com> HID: hid-ntrig: Prevent memory leak in ntrig_report_version() Pablo Neira Ayuso <pablo(a)netfilter.org> netfilter: nf_tables: reject duplicate device on updates Dan Carpenter <dan.carpenter(a)linaro.org> mtd: onenand: Pass correct pointer to IRQ handler Eric Biggers <ebiggers(a)kernel.org> lib/crypto: arm/curve25519: Disable on CPU_BIG_ENDIAN Jakub Acs <acsjakub(a)amazon.de> mm/ksm: fix flag-dropping behavior in ksm_madvise Christoph Hellwig <hch(a)lst.de> fsdax: mark the iomap argument to dax_iomap_sector as const Haein Lee <lhi0729(a)kaist.ac.kr> ALSA: usb-audio: Fix NULL pointer dereference in snd_usb_mixer_controls_badd Ian Forbes <ian.forbes(a)broadcom.com> drm/vmwgfx: Validate command header size against SVGA_CMD_MAX_DATASIZE Haotian Zhang <vulab(a)iscas.ac.cn> ASoC: cs4271: Fix regulator leak on probe failure Haotian Zhang <vulab(a)iscas.ac.cn> regulator: fixed: fix GPIO descriptor leak on register failure Chris Morgan <macromorgan(a)hotmail.com> regulator: fixed: use dev_err_probe for register Shuai Xue <xueshuai(a)linux.alibaba.com> acpi,srat: Fix incorrect device handle check for Generic Initiator Pauli Virtanen <pav(a)iki.fi> Bluetooth: L2CAP: export l2cap_chan_hold for modules Felix Maurer <fmaurer(a)redhat.com> hsr: Fix supervision frame sending on HSRv0 Eric Dumazet <edumazet(a)google.com> net_sched: limit try_bulk_dequeue_skb() batches Gal Pressman <gal(a)nvidia.com> net/mlx5e: Fix wraparound in rate limiting for values above 255 Gbps Gal Pressman <gal(a)nvidia.com> net/mlx5e: Fix maxrate wraparound in threshold between units Ranganath V N <vnranganath.20(a)gmail.com> net: sched: act_ife: initialize struct tc_ife to fix KMSAN kernel-infoleak Benjamin Berg <benjamin.berg(a)intel.com> wifi: mac80211: skip rate verification for not captured PSDUs Buday Csaba <buday.csaba(a)prolan.hu> net: mdio: fix resource leak in mdiobus_register_device() Kuniyuki Iwashima <kuniyu(a)google.com> tipc: Fix use-after-free in tipc_mon_reinit_self(). D. Wythe <alibuda(a)linux.alibaba.com> net/smc: fix mismatch between CLC header and proposal Eric Dumazet <edumazet(a)google.com> sctp: prevent possible shift-out-of-bounds in sctp_transport_update_rto Pauli Virtanen <pav(a)iki.fi> Bluetooth: 6lowpan: Don't hold spin lock over sleeping functions Pauli Virtanen <pav(a)iki.fi> Bluetooth: 6lowpan: fix BDADDR_LE vs ADDR_LE_DEV address type confusion Pauli Virtanen <pav(a)iki.fi> Bluetooth: 6lowpan: reset link-local header on ipv6 recv path Raphael Pinsonneault-Thibeault <rpthibeault(a)gmail.com> Bluetooth: btusb: reorder cleanup in btusb_disconnect to avoid UAF Wei Fang <wei.fang(a)nxp.com> net: fec: correct rx_bytes statistic for the case SHIFT16 is set Sharique Mohammad <sharq0406(a)gmail.com> ASoC: max98090/91: fixed max98091 ALSA widget powering up/down Tristan Lobb <tristan.lobb(a)it-lobb.de> HID: quirks: avoid Cooler Master MM712 dongle wakeup bug Joshua Watt <jpewhacker(a)gmail.com> NFS4: Fix state renewals missing after boot Danil Skrebenkov <danil.skrebenkov(a)cloudbear.ru> RISC-V: clear hot-unplugged cores from all task mm_cpumasks to avoid rfence errors Peter Zijlstra <peterz(a)infradead.org> compiler_types: Move unused static inline functions warning to W=2 Krzysztof Kozlowski <krzysztof.kozlowski(a)linaro.org> extcon: adc-jack: Cleanup wakeup source only if it was enabled Nathan Chancellor <nathan(a)kernel.org> lib/crypto: curve25519-hacl64: Fix older clang KASAN workaround for GCC Zilin Guan <zilin(a)seu.edu.cn> tracing: Fix memory leaks in create_field_var() Qendrim Maxhuni <qendrim.maxhuni(a)garderos.com> net: usb: qmi_wwan: initialize MAC header offset in qmimux_rx_fixup Stefan Wiehler <stefan.wiehler(a)nokia.com> sctp: Hold sock lock while iterating over address list Xin Long <lucien.xin(a)gmail.com> sctp: hold endpoint before calling cb in sctp_transport_lookup_process Yajun Deng <yajun.deng(a)linux.dev> net: Use nlmsg_unicast() instead of netlink_unicast() Lu Wei <luwei32(a)huawei.com> net: sctp: Fix some typos Stefan Wiehler <stefan.wiehler(a)nokia.com> sctp: Prevent TOCTOU out-of-bounds write Stefan Wiehler <stefan.wiehler(a)nokia.com> sctp: Hold RCU read lock while iterating over address list Jonas Gorski <jonas.gorski(a)gmail.com> net: dsa: b53: stop reading ARL entries if search is done Jonas Gorski <jonas.gorski(a)gmail.com> net: dsa: b53: fix enabling ip multicast Jonas Gorski <jonas.gorski(a)gmail.com> net: dsa: b53: fix resetting speed and pause on forced link Hangbin Liu <liuhangbin(a)gmail.com> net: vlan: sync VLAN features with lower device Josephine Pfeiffer <hi(a)josie.lol> riscv: ptdump: use seq_puts() in pt_dump_seq_puts() macro Kailang Yang <kailang(a)realtek.com> ALSA: hda/realtek: Audio disappears on HP 15-fc000 after warm boot again Viacheslav Dubeyko <Slava.Dubeyko(a)ibm.com> ceph: add checking of wait_for_completion_killable() return value Valerio Setti <vsetti(a)baylibre.com> ASoC: meson: aiu-encoder-i2s: fix bit clock polarity Albin Babu Varghese <albinbabuvarghese20(a)gmail.com> fbdev: Add bounds checking in bit_putcs to fix vmalloc-out-of-bounds Ian Rogers <irogers(a)google.com> tools bitmap: Add missing asm-generic/bitsperlong.h include Sakari Ailus <sakari.ailus(a)linux.intel.com> ACPI: property: Return present device nodes only on fwnode interface Randall P. Embry <rpembry(a)gmail.com> 9p: sysfs_init: don't hardcode error to ENOMEM Randall P. Embry <rpembry(a)gmail.com> 9p: fix /sys/fs/9p/caches overwriting itself Nicolas Ferre <nicolas.ferre(a)microchip.com> ARM: at91: pm: save and restore ACR during PLL disable/enable Tiwei Bie <tiwei.btw(a)antgroup.com> um: Fix help message for ssl-non-raw Yikang Yue <yikangy2(a)illinois.edu> fs/hpfs: Fix error code for new_inode() failure in mkdir/create/mknod/symlink austinchang <austinchang(a)synology.com> btrfs: mark dirty extent range for out of bound prealloc extents Saket Dumbre <saket.dumbre(a)intel.com> ACPICA: Update dsmethod.c to get rid of unused variable warning Mike Marshall <hubcap(a)omnibond.com> orangefs: fix xattr related buffer overflow... Dragos Tatulea <dtatulea(a)nvidia.com> page_pool: Clamp pool size to max 16K pages Chi Zhiling <chizhiling(a)kylinos.cn> exfat: limit log print for IO error Roy Vegard Ovesen <roy.vegard.ovesen(a)gmail.com> ALSA: usb-audio: add mono main switch to Presonus S1824c Ivan Pravdin <ipravdin.official(a)gmail.com> Bluetooth: bcsp: receive data only if registered Luiz Augusto von Dentz <luiz.von.dentz(a)intel.com> Bluetooth: SCO: Fix UAF on sco_conn_free Théo Lebrun <theo.lebrun(a)bootlin.com> net: macb: avoid dealing with endianness in macb_set_hwaddr() chuguangqing <chuguangqing(a)inspur.com> fs: ext4: change GFP_KERNEL to GFP_NOFS to avoid deadlock Al Viro <viro(a)zeniv.linux.org.uk> nfs4_setup_readdir(): insufficient locking for ->d_parent->d_inode dereferencing Anthony Iliopoulos <ailiop(a)suse.com> NFSv4.1: fix mount hang after CREATE_SESSION failure Olga Kornievskaia <okorniev(a)redhat.com> NFSv4: handle ERR_GRACE on delegation recalls Stephan Gerhold <stephan.gerhold(a)linaro.org> remoteproc: qcom: q6v5: Avoid handling handover twice Koakuma <koachan(a)protonmail.com> sparc/module: Add R_SPARC_UA64 relocation handling Chen Wang <unicorn_wang(a)outlook.com> PCI: cadence: Check for the existence of cdns_pcie::ops before using it ChunHao Lin <hau(a)realtek.com> r8169: set EEE speed down ratio to 1 Brahmajit Das <listout(a)listout.xyz> net: intel: fm10k: Fix parameter idx set but not used Loic Poulain <loic.poulain(a)oss.qualcomm.com> wifi: ath10k: Fix connection after GTK rekeying Shaurya Rane <ssrane_b23(a)ee.vjti.ac.in> jfs: fix uninitialized waitqueue in transaction manager Tetsuo Handa <penguin-kernel(a)I-love.SAKURA.ne.jp> jfs: Verify inode mode when loading from disk Eric Dumazet <edumazet(a)google.com> ipv6: np->rxpmtu race annotation Krishna Kurapati <krishna.kurapati(a)oss.qualcomm.com> usb: xhci: plat: Facilitate using autosuspend for xhci plat devices Forest Crossman <cyrozap(a)gmail.com> usb: mon: Increase BUFF_MAX to 64 MiB to support multi-MB URBs Al Viro <viro(a)zeniv.linux.org.uk> allow finish_no_open(file, ERR_PTR(-E...)) Justin Tee <justin.tee(a)broadcom.com> scsi: lpfc: Define size of debugfs entry for xri rebalancing Nai-Chen Cheng <bleach1827(a)gmail.com> selftests/Makefile: include $(INSTALL_DEP_TARGETS) in clean target to clean net/lib dependency Yafang Shao <laoar.shao(a)gmail.com> net/cls_cgroup: Fix task_get_classid() during qdisc run Alok Tiwari <alok.a.tiwari(a)oracle.com> udp_tunnel: use netdev_warn() instead of netdev_WARN() David Ahern <dsahern(a)kernel.org> selftests: Replace sleep with slowwait Daniel Palmer <daniel(a)thingy.jp> eth: 8139too: Make 8139TOO_PIO depend on !NO_IOPORT_MAP David Ahern <dsahern(a)kernel.org> selftests: Disable dad for ipv6 in fcnal-test.sh Li RongQing <lirongqing(a)baidu.com> x86/kvm: Prefer native qspinlock for dedicated vCPUs irrespective of PV_UNHALT Ido Schimmel <idosch(a)nvidia.com> selftests: traceroute: Use require_command() Qianfeng Rong <rongqianfeng(a)vivo.com> media: redrat3: use int type to store negative error codes Niklas Söderlund <niklas.soderlund+renesas(a)ragnatech.se> net: sh_eth: Disable WoL if system can not suspend Harikrishna Shenoy <h-shenoy(a)ti.com> phy: cadence: cdns-dphy: Enable lower resolutions in dphy Rohan G Thomas <rohan.g.thomas(a)altera.com> net: phy: marvell: Fix 88e1510 downshift counter errata William Wu <william.wu(a)rock-chips.com> usb: gadget: f_hid: Fix zero length packet transfer Ashish Kalra <ashish.kalra(a)amd.com> iommu/amd: Skip enabling command/event buffers for kdump Eric Dumazet <edumazet(a)google.com> net: call cond_resched() less often in __release_sock() Cryolitia PukNgae <cryolitia(a)uniontech.com> ALSA: usb-audio: apply quirk for MOONDROP Quark2 Juraj Šarinay <juraj(a)sarinay.com> net: nfc: nci: Increase NCI_DATA_TIMEOUT to 3000 ms Yue Haibing <yuehaibing(a)huawei.com> ipv6: Add sanity checks on ipv6_devconf.rpl_seg_enabled Devendra K Verma <devverma(a)amd.com> dmaengine: dw-edma: Set status for callback_result Rosen Penev <rosenp(a)gmail.com> dmaengine: mv_xor: match alloc_wc and free_wc Thomas Andreatta <thomasandreatta2000(a)gmail.com> dmaengine: sh: setup_xref error handling Qianfeng Rong <rongqianfeng(a)vivo.com> scsi: pm8001: Use int instead of u32 to store error codes Aleksander Jan Bajkowski <olek2(a)wp.pl> mips: lantiq: xway: sysctrl: rename stp clock Aleksander Jan Bajkowski <olek2(a)wp.pl> mips: lantiq: danube: add missing device_type in pci node Aleksander Jan Bajkowski <olek2(a)wp.pl> mips: lantiq: danube: add missing properties to cpu node Chelsy Ratnawat <chelsyratnawat2001(a)gmail.com> media: fix uninitialized symbol warnings Amber Lin <Amber.Lin(a)amd.com> drm/amdkfd: Tie UNMAP_LATENCY to queue_preemption Krzysztof Kozlowski <krzysztof.kozlowski(a)linaro.org> extcon: adc-jack: Fix wakeup source leaks on device unbind Francisco Gutierrez <frankramirez(a)google.com> scsi: pm80xx: Fix race condition caused by static variables Ujwal Kundur <ujwal.kundur(a)gmail.com> rds: Fix endianness annotation for RDS_MPATH_HASH Takashi Iwai <tiwai(a)suse.de> ALSA: usb-audio: Add validation of UAC2/UAC3 effect units Sungho Kim <sungho.kim(a)furiosa.ai> PCI/P2PDMA: Fix incorrect pointer usage in devm_kfree() call Kuniyuki Iwashima <kuniyu(a)google.com> net: Call trace_sock_exceed_buf_limit() for memcg failure with SK_MEM_RECV. Christoph Paasch <cpaasch(a)openai.com> net: When removing nexthops, don't call synchronize_net if it is not necessary Zijun Hu <zijun.hu(a)oss.qualcomm.com> char: misc: Does not request module for miscdevice with dynamic minor raub camaioni <raubcameo(a)gmail.com> usb: gadget: f_ncm: Fix MAC assignment NCM ethernet Rodrigo Gobbi <rodrigo.gobbi.7(a)gmail.com> iio: adc: spear_adc: mask SPEAR_ADC_STATUS channel and avg sample before setting register Dmitry Baryshkov <dmitry.baryshkov(a)oss.qualcomm.com> drm/bridge: display-connector: don't set OP_DETECT for DisplayPorts Tetsuo Handa <penguin-kernel(a)I-love.SAKURA.ne.jp> media: imon: make send_packet() more robust Charalampos Mitrodimas <charmitro(a)posteo.net> net: ipv6: fix field-spanning memcpy warning in AH output Ido Schimmel <idosch(a)nvidia.com> bridge: Redirect to backup port when port is administratively down Niklas Schnelle <schnelle(a)linux.ibm.com> powerpc/eeh: Use result of error_detected() in uevent Tiezhu Yang <yangtiezhu(a)loongson.cn> net: stmmac: Check stmmac_hw_setup() in stmmac_resume() Kirill A. Shutemov <kirill.shutemov(a)linux.intel.com> x86/vsyscall: Do not require X86_PF_INSTR to emulate vsyscall Tomi Valkeinen <tomi.valkeinen(a)ideasonboard.com> drm/tidss: Use the crtc_* timings when programming the HW Laurent Pinchart <laurent.pinchart+renesas(a)ideasonboard.com> media: pci: ivtv: Don't create fake v4l2_fh Geoffrey McRae <geoffrey.mcrae(a)amd.com> drm/amdkfd: return -ENOTTY for unsupported IOCTLs Wake Liu <wakel(a)google.com> selftests/net: Ensure assert() triggers in psock_tpacket.c Wake Liu <wakel(a)google.com> selftests/net: Replace non-standard __WORDSIZE with sizeof(long) * 8 Marcos Del Sol Vives <marcos(a)orca.pet> PCI: Disable MSI on RDC PCI to PCIe bridges Seyediman Seyedarab <imandevel(a)gmail.com> drm/nouveau: replace snprintf() with scnprintf() in nvkm_snprintbf() Sathishkumar S <sathishkumar.sundararaju(a)amd.com> drm/amdgpu/jpeg: Hold pg_lock before jpeg poweroff Lijo Lazar <lijo.lazar(a)amd.com> drm/amd/pm: Use cached metrics data on arcturus Jens Kehne <jens.kehne(a)agilent.com> mfd: da9063: Split chip variant reading in two bus transactions Arnd Bergmann <arnd(a)arndb.de> mfd: madera: Work around false-positive -Wininitialized warning Alexander Stein <alexander.stein(a)ew.tq-group.com> mfd: stmpe-i2c: Add missing MODULE_LICENSE Alexander Stein <alexander.stein(a)ew.tq-group.com> mfd: stmpe: Remove IRQ domain upon removal Len Brown <len.brown(a)intel.com> tools/power x86_energy_perf_policy: Prefer driver HWP limits Len Brown <len.brown(a)intel.com> tools/power x86_energy_perf_policy: Enhance HWP enable Kaushlendra Kumar <kaushlendra.kumar(a)intel.com> tools/power x86_energy_perf_policy: Fix incorrect fopen mode usage Kaushlendra Kumar <kaushlendra.kumar(a)intel.com> tools/cpupower: Fix incorrect size in cpuidle_state_disable() Armin Wolf <W_Armin(a)gmx.de> hwmon: (dell-smm) Add support for Dell OptiPlex 7040 Jiri Olsa <jolsa(a)kernel.org> uprobe: Do not emulate/sstep original instruction when ip is changed Daniel Lezcano <daniel.lezcano(a)linaro.org> clocksource/drivers/vf-pit: Replace raw_readl/writel to readl/writel Rafael J. Wysocki <rafael.j.wysocki(a)intel.com> cpuidle: Fail cpuidle device registration if there is one already Svyatoslav Ryhel <clamor95(a)gmail.com> video: backlight: lp855x_bl: Set correct EPROM start for LP8556 Daniel Wagner <wagi(a)kernel.org> nvme-fc: use lock accessing port_state and rport state Amirreza Zarrabi <amirreza.zarrabi(a)oss.qualcomm.com> tee: allow a driver to allocate a tee_device without a pool Hans de Goede <hansg(a)kernel.org> ACPICA: dispatcher: Use acpi_ds_clear_operands() in acpi_ds_call_control_method() Sarthak Garg <quic_sartgarg(a)quicinc.com> mmc: sdhci-msm: Enable tuning for SDR50 mode for SD card Svyatoslav Ryhel <clamor95(a)gmail.com> soc/tegra: fuse: Add Tegra114 nvmem cells and fuse lookups Christian Bruel <christian.bruel(a)foss.st.com> irqchip/gic-v2m: Handle Multiple MSI base IRQ Alignment Kees Cook <kees(a)kernel.org> arc: Fix __fls() const-foldability via __builtin_clzl() Dennis Beier <nanovim(a)gmail.com> cpufreq/longhaul: handle NULL policy in longhaul_exit Ricardo B. Marlière <rbm(a)suse.com> selftests/bpf: Fix bpf_prog_detach2 usage in test_lirc_mode2 Mario Limonciello (AMD) <superm1(a)kernel.org> ACPI: video: force native for Lenovo 82K8 Jiayi Li <lijiayi(a)kylinos.cn> memstick: Add timeout to prevent indefinite waiting Biju Das <biju.das.jz(a)bp.renesas.com> mmc: host: renesas_sdhi: Fix the actual clock Chi Zhang <chizhang(a)asrmicro.com> pinctrl: single: fix bias pull up/down handling in pin_config_set Thomas Weißschuh <thomas.weissschuh(a)linutronix.de> bpf: Don't use %pK through printk Thomas Weißschuh <thomas.weissschuh(a)linutronix.de> soc: ti: pruss: don't use %pK through printk Thomas Weißschuh <thomas.weissschuh(a)linutronix.de> spi: loopback-test: Don't use %pK through printk Jens Reidel <adrian(a)mainlining.org> soc: qcom: smem: Fix endian-unaware access of num_entries Damien Le Moal <dlemoal(a)kernel.org> block: make REQ_OP_ZONE_OPEN a write operation Owen Gu <guhuinan(a)xiaomi.com> usb: gadget: f_fs: Fix epfile null pointer access after ep enable. Matthieu Baerts (NGI0) <matttbe(a)kernel.org> tracing: fix declaration-after-statement warning Matthieu Baerts (NGI0) <matttbe(a)kernel.org> arch: back to -std=gnu89 in < v5.18 Alexey Dobriyan <adobriyan(a)gmail.com> x86/boot: Compile boot code with -std=gnu11 too Babu Moger <babu.moger(a)amd.com> x86/resctrl: Fix miscount of bandwidth event when reactivating previously unavailable RMID Artem Shimko <a.shimko.dev(a)gmail.com> serial: 8250_dw: handle reset control deassert error Andy Shevchenko <andriy.shevchenko(a)linux.intel.com> serial: 8250_dw: Use devm_add_action_or_reset() Celeste Liu <uwu(a)coelacanthus.name> can: gs_usb: increase max interface to U8_MAX Maarten Lankhorst <dev(a)lankhorst.se> devcoredump: Fix circular locking dependency with devcd->mutex. Darrick J. Wong <djwong(a)kernel.org> xfs: always warn about deprecated mount options Lad Prabhakar <prabhakar.mahadev-lad.rj(a)bp.renesas.com> net: ravb: Enforce descriptor type ordering Emanuele Ghidoli <emanuele.ghidoli(a)toradex.com> net: phy: dp83867: Disable EEE support as not implemented Alexey Klimov <alexey.klimov(a)linaro.org> regmap: slimbus: fix bus_context pointer in regmap init calls Damien Le Moal <dlemoal(a)kernel.org> block: fix op_is_zone_mgmt() to handle REQ_OP_ZONE_RESET_ALL John Smith <itistotalbotnet(a)gmail.com> drm/amd/pm/powerplay/smumgr: Fix PCIeBootLinkLevel value on Iceland John Smith <itistotalbotnet(a)gmail.com> drm/amd/pm/powerplay/smumgr: Fix PCIeBootLinkLevel value on Fiji Yang Wang <kevinyang.wang(a)amd.com> drm/amd/pm: fix smu table id bound check issue in smu_cmn_update_table() Tomeu Vizoso <tomeu(a)tomeuvizoso.net> drm/etnaviv: fix flush sequence logic Lizhi Xu <lizhi.xu(a)windriver.com> usbnet: Prevents free active kevent Noorain Eqbal <nooraineqbal(a)gmail.com> bpf: Sync pending IRQ work before freeing ring buffer Roy Vegard Ovesen <roy.vegard.ovesen(a)gmail.com> ALSA: usb-audio: fix control pipe direction Akhil P Oommen <akhilpo(a)oss.qualcomm.com> drm/msm/a6xx: Fix GMU firmware parser Loic Poulain <loic.poulain(a)oss.qualcomm.com> wifi: ath10k: Fix memory leak on unsupported WMI command Srinivas Kandagatla <srinivas.kandagatla(a)oss.qualcomm.com> ASoC: qdsp6: q6asm: do not sleep while atomic Miaoqian Lin <linmq006(a)gmail.com> fbdev: valkyriefb: Fix reference count leak in valkyriefb_init Florian Fuchs <fuchsfl(a)gmail.com> fbdev: pvr2fb: Fix leftover reference to ONCHIP_NR_DMA_CHANNELS Gokul Sivakumar <gokulkumar.sivakumar(a)infineon.com> wifi: brcmfmac: fix crash while sending Action Frames in standalone AP Mode Junjie Cao <junjie.cao(a)intel.com> fbdev: bitblit: bound-check glyph index in bit_putcs* Yuhao Jiang <danisjiang(a)gmail.com> ACPI: video: Fix use-after-free in acpi_video_switch_brightness() Daniel Palmer <daniel(a)0x0f.com> fbdev: atyfb: Check if pll_ops->init_pll failed Miaoqian Lin <linmq006(a)gmail.com> net: usb: asix_devices: Check return value of usbnet_get_endpoints Chuck Lever <chuck.lever(a)oracle.com> NFSD: Fix crash in nfsd4_read_release() Filipe Manana <fdmanana(a)suse.com> btrfs: use smp_mb__after_atomic() when forcing COW in create_pending_snapshot() Filipe Manana <fdmanana(a)suse.com> btrfs: always drop log root tree reference in btrfs_replay_log() David Kaplan <david.kaplan(a)amd.com> x86/bugs: Fix reporting of LFENCE retpoline Xiang Mei <xmei5(a)asu.edu> net/sched: sch_qfq: Fix null-deref in agg_dequeue ------------- Diffstat: .../bindings/pinctrl/toshiba,visconti-pinctrl.yaml | 26 ++-- Documentation/kbuild/makefiles.rst | 29 +++-- Makefile | 8 +- arch/arc/include/asm/bitops.h | 2 + arch/arm/crypto/Kconfig | 2 +- arch/arm/mach-at91/pm_suspend.S | 8 +- arch/mips/boot/dts/lantiq/danube.dtsi | 6 + arch/mips/lantiq/xway/sysctrl.c | 2 +- arch/mips/loongson64/Platform | 2 +- arch/mips/mm/tlb-r4k.c | 118 ++++++++++++------ arch/mips/mti-malta/malta-init.c | 20 +-- arch/parisc/boot/compressed/Makefile | 2 +- arch/powerpc/Makefile | 4 +- arch/powerpc/kernel/eeh_driver.c | 2 +- arch/riscv/kernel/cpu-hotplug.c | 1 + arch/riscv/mm/ptdump.c | 2 +- arch/s390/Makefile | 6 +- arch/s390/purgatory/Makefile | 2 +- arch/sparc/include/asm/elf_64.h | 1 + arch/sparc/kernel/module.c | 1 + arch/um/drivers/ssl.c | 5 +- arch/x86/Makefile | 2 +- arch/x86/boot/compressed/Makefile | 2 +- arch/x86/entry/vsyscall/vsyscall_64.c | 17 ++- arch/x86/events/core.c | 10 +- arch/x86/kernel/cpu/bugs.c | 5 +- arch/x86/kernel/cpu/resctrl/monitor.c | 10 +- arch/x86/kernel/kvm.c | 20 +-- drivers/acpi/acpi_video.c | 4 +- drivers/acpi/acpica/dsmethod.c | 10 +- drivers/acpi/numa/srat.c | 2 +- drivers/acpi/property.c | 24 +++- drivers/acpi/video_detect.c | 8 ++ drivers/ata/libata-scsi.c | 8 ++ drivers/atm/fore200e.c | 2 + drivers/base/devcoredump.c | 138 +++++++++++++-------- drivers/base/regmap/regmap-slimbus.c | 6 +- drivers/bluetooth/btusb.c | 13 +- drivers/bluetooth/hci_bcsp.c | 3 + drivers/char/misc.c | 8 +- drivers/clocksource/timer-vf-pit.c | 22 ++-- drivers/cpufreq/longhaul.c | 3 + drivers/cpuidle/cpuidle.c | 8 +- drivers/dma/dw-edma/dw-edma-core.c | 22 ++++ drivers/dma/mv_xor.c | 4 +- drivers/dma/sh/shdma-base.c | 25 +++- drivers/dma/sh/shdmac.c | 17 ++- drivers/edac/altera_edac.c | 22 +++- drivers/extcon/extcon-adc-jack.c | 2 + drivers/firmware/arm_scmi/scmi_pm_domain.c | 13 +- drivers/firmware/efi/libstub/Makefile | 2 +- drivers/firmware/stratix10-svc.c | 7 +- drivers/gpu/drm/amd/amdgpu/amdgpu_jpeg.c | 6 +- drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 8 +- drivers/gpu/drm/amd/amdkfd/kfd_priv.h | 9 +- drivers/gpu/drm/amd/display/dc/calcs/Makefile | 2 +- drivers/gpu/drm/amd/display/dc/core/dc_stream.c | 11 +- drivers/gpu/drm/amd/display/dc/dcn20/Makefile | 2 +- drivers/gpu/drm/amd/display/dc/dcn21/Makefile | 2 +- drivers/gpu/drm/amd/display/dc/dcn30/Makefile | 2 +- drivers/gpu/drm/amd/display/dc/dml/Makefile | 2 +- drivers/gpu/drm/amd/display/dc/dsc/Makefile | 2 +- .../gpu/drm/amd/pm/powerplay/smumgr/fiji_smumgr.c | 2 +- .../drm/amd/pm/powerplay/smumgr/iceland_smumgr.c | 2 +- drivers/gpu/drm/amd/pm/swsmu/smu11/arcturus_ppt.c | 2 +- drivers/gpu/drm/amd/pm/swsmu/smu_cmn.c | 2 +- drivers/gpu/drm/bridge/display-connector.c | 3 +- drivers/gpu/drm/etnaviv/etnaviv_buffer.c | 2 +- drivers/gpu/drm/msm/adreno/a6xx_gmu.c | 5 +- drivers/gpu/drm/nouveau/nvkm/core/enum.c | 2 +- drivers/gpu/drm/sti/sti_vtg.c | 7 +- drivers/gpu/drm/tegra/dc.c | 1 + drivers/gpu/drm/tidss/tidss_crtc.c | 2 +- drivers/gpu/drm/tidss/tidss_dispc.c | 16 +-- drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c | 5 + drivers/hid/hid-ids.h | 7 +- drivers/hid/hid-ntrig.c | 7 +- drivers/hid/hid-quirks.c | 14 ++- drivers/hwmon/dell-smm-hwmon.c | 7 ++ drivers/iio/adc/spear_adc.c | 9 +- drivers/iio/common/ssp_sensors/ssp_dev.c | 4 +- drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h | 22 ++-- drivers/input/keyboard/cros_ec_keyb.c | 6 + drivers/input/keyboard/imx_sc_key.c | 2 +- drivers/input/misc/ati_remote2.c | 2 +- drivers/input/misc/cm109.c | 2 +- drivers/input/misc/powermate.c | 2 +- drivers/input/misc/yealink.c | 2 +- drivers/input/tablet/acecad.c | 2 +- drivers/input/tablet/pegasus_notetaker.c | 11 +- drivers/iommu/amd/init.c | 28 +++-- drivers/irqchip/irq-gic-v2m.c | 13 +- drivers/isdn/hardware/mISDN/hfcsusb.c | 18 ++- drivers/mailbox/mailbox-test.c | 2 +- drivers/md/dm-verity-fec.c | 6 +- drivers/media/i2c/ir-kbd-i2c.c | 6 +- drivers/media/pci/ivtv/ivtv-alsa-pcm.c | 2 - drivers/media/pci/ivtv/ivtv-driver.h | 3 +- drivers/media/pci/ivtv/ivtv-fileops.c | 18 +-- drivers/media/pci/ivtv/ivtv-irq.c | 4 +- drivers/media/rc/imon.c | 61 +++++---- drivers/media/rc/redrat3.c | 2 +- drivers/media/tuners/xc4000.c | 8 +- drivers/media/tuners/xc5000.c | 12 +- drivers/memstick/core/memstick.c | 8 +- drivers/mfd/da9063-i2c.c | 27 +++- drivers/mfd/madera-core.c | 4 +- drivers/mfd/stmpe-i2c.c | 1 + drivers/mfd/stmpe.c | 3 + drivers/mmc/host/renesas_sdhi_core.c | 6 +- drivers/mmc/host/sdhci-msm.c | 15 +++ drivers/most/most_usb.c | 14 +-- drivers/mtd/nand/onenand/onenand_samsung.c | 2 +- drivers/mtd/nand/raw/cadence-nand-controller.c | 3 +- drivers/net/can/sja1000/sja1000.c | 4 +- drivers/net/can/sun4i_can.c | 4 +- drivers/net/can/usb/gs_usb.c | 23 ++-- drivers/net/can/usb/kvaser_usb/kvaser_usb_leaf.c | 4 +- drivers/net/dsa/b53/b53_common.c | 15 ++- drivers/net/dsa/b53/b53_regs.h | 3 +- .../net/ethernet/aquantia/atlantic/aq_hw_utils.c | 22 ++++ .../net/ethernet/aquantia/atlantic/aq_hw_utils.h | 1 + drivers/net/ethernet/aquantia/atlantic/aq_ring.c | 5 + .../ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c | 19 +-- .../ethernet/aquantia/atlantic/hw_atl2/hw_atl2.c | 2 +- drivers/net/ethernet/cadence/macb_main.c | 4 +- drivers/net/ethernet/emulex/benet/be_main.c | 7 +- drivers/net/ethernet/freescale/fec_main.c | 2 + drivers/net/ethernet/intel/fm10k/fm10k_common.c | 5 +- drivers/net/ethernet/intel/fm10k/fm10k_common.h | 2 +- drivers/net/ethernet/intel/fm10k/fm10k_pf.c | 2 +- drivers/net/ethernet/intel/fm10k/fm10k_vf.c | 2 +- drivers/net/ethernet/mellanox/mlx5/core/en_dcbnl.c | 15 ++- .../net/ethernet/mellanox/mlxsw/spectrum_flower.c | 6 +- drivers/net/ethernet/qlogic/qede/qede_main.c | 2 +- drivers/net/ethernet/realtek/Kconfig | 2 +- drivers/net/ethernet/realtek/r8169_main.c | 6 +- drivers/net/ethernet/renesas/ravb_main.c | 16 ++- drivers/net/ethernet/renesas/sh_eth.c | 4 + drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c | 4 +- drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 9 +- drivers/net/ethernet/ti/netcp_core.c | 10 +- drivers/net/phy/dp83867.c | 6 + drivers/net/phy/marvell.c | 39 +++++- drivers/net/phy/mdio_bus.c | 5 +- drivers/net/usb/asix_devices.c | 12 +- drivers/net/usb/qmi_wwan.c | 6 + drivers/net/usb/usbnet.c | 2 + drivers/net/wireless/ath/ath10k/mac.c | 12 +- drivers/net/wireless/ath/ath10k/wmi.c | 1 + .../broadcom/brcm80211/brcmfmac/cfg80211.c | 3 +- .../net/wireless/broadcom/brcm80211/brcmfmac/p2p.c | 28 ++--- .../net/wireless/broadcom/brcm80211/brcmfmac/p2p.h | 3 +- drivers/nvme/host/fc.c | 12 +- drivers/pci/controller/cadence/pcie-cadence-host.c | 2 +- drivers/pci/controller/cadence/pcie-cadence.c | 4 +- drivers/pci/controller/cadence/pcie-cadence.h | 6 +- drivers/pci/p2pdma.c | 2 +- drivers/pci/quirks.c | 1 + drivers/phy/cadence/cdns-dphy.c | 4 +- drivers/pinctrl/pinctrl-single.c | 4 +- drivers/regulator/fixed.c | 6 +- drivers/remoteproc/qcom_q6v5.c | 5 + drivers/s390/net/ctcm_mpc.c | 1 - drivers/scsi/hosts.c | 5 +- drivers/scsi/lpfc/lpfc_debugfs.h | 3 + drivers/scsi/pm8001/pm8001_ctl.c | 24 ++-- drivers/scsi/pm8001/pm8001_init.c | 1 + drivers/scsi/pm8001/pm8001_sas.c | 4 +- drivers/scsi/pm8001/pm8001_sas.h | 4 + drivers/scsi/sg.c | 10 +- drivers/slimbus/qcom-ngd-ctrl.c | 1 + drivers/soc/imx/gpc.c | 2 + drivers/soc/qcom/smem.c | 2 +- drivers/soc/tegra/fuse/fuse-tegra30.c | 122 ++++++++++++++++++ drivers/soc/ti/knav_dma.c | 14 +-- drivers/soc/ti/pruss.c | 2 +- drivers/spi/spi-bcm63xx.c | 14 +++ drivers/spi/spi-loopback-test.c | 12 +- drivers/spi/spi.c | 10 ++ drivers/target/loopback/tcm_loop.c | 3 + drivers/tee/tee_core.c | 2 +- drivers/thunderbolt/nhi.c | 2 + drivers/thunderbolt/nhi.h | 1 + drivers/tty/serial/8250/8250_dw.c | 67 +++++----- drivers/tty/serial/amba-pl011.c | 2 +- drivers/uio/uio_hv_generic.c | 21 +++- drivers/usb/cdns3/cdns3-pci-wrap.c | 5 +- drivers/usb/dwc3/ep0.c | 1 + drivers/usb/dwc3/gadget.c | 7 ++ drivers/usb/gadget/function/f_eem.c | 7 +- drivers/usb/gadget/function/f_fs.c | 8 +- drivers/usb/gadget/function/f_hid.c | 4 +- drivers/usb/gadget/function/f_ncm.c | 3 +- drivers/usb/host/xhci-dbgcap.h | 1 + drivers/usb/host/xhci-dbgtty.c | 17 ++- drivers/usb/host/xhci-plat.c | 1 + drivers/usb/mon/mon_bin.c | 14 ++- drivers/usb/renesas_usbhs/common.c | 14 +-- drivers/usb/serial/ftdi_sio.c | 1 + drivers/usb/serial/ftdi_sio_ids.h | 1 + drivers/usb/serial/option.c | 10 +- drivers/usb/storage/sddr55.c | 6 + drivers/usb/storage/transport.c | 16 +++ drivers/usb/storage/uas.c | 7 +- drivers/usb/storage/unusual_devs.h | 2 +- drivers/usb/typec/ucsi/psy.c | 5 + drivers/video/backlight/lp855x_bl.c | 2 +- drivers/video/fbdev/aty/atyfb_base.c | 8 +- drivers/video/fbdev/core/bitblit.c | 33 ++++- drivers/video/fbdev/pvr2fb.c | 2 +- drivers/video/fbdev/valkyriefb.c | 2 + fs/9p/v9fs.c | 9 +- fs/btrfs/disk-io.c | 2 +- fs/btrfs/file.c | 10 ++ fs/btrfs/transaction.c | 2 +- fs/btrfs/tree-log.c | 1 - fs/ceph/locks.c | 5 +- fs/cifs/connect.c | 1 + fs/dax.c | 2 +- fs/exfat/fatent.c | 11 +- fs/exfat/super.c | 5 +- fs/ext4/xattr.c | 2 +- fs/fs-writeback.c | 7 +- fs/hpfs/namei.c | 18 ++- fs/jfs/inode.c | 8 +- fs/jfs/jfs_txnmgr.c | 9 +- fs/nfs/inode.c | 6 +- fs/nfs/nfs4client.c | 1 + fs/nfs/nfs4proc.c | 7 +- fs/nfs/nfs4state.c | 3 + fs/nfsd/nfs4proc.c | 7 +- fs/nfsd/nfs4state.c | 3 +- fs/open.c | 10 +- fs/orangefs/xattr.c | 12 +- fs/overlayfs/copy_up.c | 2 +- fs/proc/generic.c | 12 +- fs/xfs/xfs_super.c | 33 +++-- include/linux/ata.h | 1 + include/linux/blk_types.h | 11 +- include/linux/compiler_types.h | 5 +- include/linux/filter.h | 2 +- include/linux/mm.h | 2 +- include/linux/shdma-base.h | 2 +- include/linux/usb.h | 16 +-- include/net/cls_cgroup.h | 2 +- include/net/nfc/nci_core.h | 2 +- include/net/pkt_sched.h | 25 +++- include/net/sctp/sctp.h | 3 +- include/net/tls.h | 6 + kernel/bpf/ringbuf.c | 2 + kernel/events/uprobes.c | 7 ++ kernel/gcov/gcc_4_7.c | 4 +- kernel/trace/trace_events_hist.c | 6 +- kernel/trace/trace_events_synth.c | 3 +- lib/crypto/Makefile | 2 +- mm/mempool.c | 32 ++++- mm/page_alloc.c | 2 +- net/8021q/vlan.c | 2 + net/bluetooth/6lowpan.c | 103 ++++++++++----- net/bluetooth/hci_event.c | 21 +++- net/bluetooth/l2cap_core.c | 1 + net/bluetooth/sco.c | 7 ++ net/bluetooth/smp.c | 31 ++--- net/bridge/br_forward.c | 3 +- net/ceph/ceph_common.c | 53 ++++---- net/ceph/debugfs.c | 16 ++- net/core/netpoll.c | 7 +- net/core/page_pool.c | 6 +- net/core/sock.c | 15 ++- net/hsr/hsr_device.c | 3 + net/ipv4/fib_frontend.c | 2 +- net/ipv4/inet_diag.c | 5 +- net/ipv4/nexthop.c | 6 + net/ipv4/raw_diag.c | 7 +- net/ipv4/route.c | 5 + net/ipv4/udp_diag.c | 6 +- net/ipv4/udp_tunnel_nic.c | 2 +- net/ipv6/addrconf.c | 4 +- net/ipv6/ah6.c | 50 +++++--- net/ipv6/raw.c | 2 +- net/ipv6/udp.c | 2 +- net/mac80211/rx.c | 10 +- net/mptcp/mptcp_diag.c | 6 +- net/mptcp/pm.c | 3 +- net/mptcp/pm_netlink.c | 20 +-- net/mptcp/protocol.c | 59 ++++++--- net/mptcp/protocol.h | 1 + net/netfilter/nf_tables_api.c | 15 +++ net/netfilter/nft_set_pipapo.c | 4 +- net/netfilter/nft_set_pipapo.h | 21 ++++ net/netfilter/nft_set_pipapo_avx2.c | 31 ++++- net/netlink/af_netlink.c | 2 +- net/openvswitch/actions.c | 68 +--------- net/openvswitch/flow_netlink.c | 64 ++-------- net/openvswitch/flow_netlink.h | 2 - net/rds/rds.h | 2 +- net/sched/act_ife.c | 12 +- net/sched/sch_api.c | 10 -- net/sched/sch_generic.c | 17 +-- net/sched/sch_hfsc.c | 16 --- net/sched/sch_qfq.c | 2 +- net/sctp/diag.c | 73 ++++++----- net/sctp/sm_make_chunk.c | 2 +- net/sctp/socket.c | 24 ++-- net/sctp/transport.c | 13 +- net/smc/smc_clc.c | 1 + net/strparser/strparser.c | 2 +- net/tipc/net.c | 2 + net/tls/tls_device.c | 4 +- net/unix/diag.c | 6 +- net/vmw_vsock/af_vsock.c | 40 ++++-- scripts/Kbuild.include | 10 +- scripts/kconfig/mconf.c | 3 + scripts/kconfig/nconf.c | 3 + sound/pci/hda/patch_realtek.c | 17 +-- sound/soc/codecs/cs4271.c | 10 +- sound/soc/codecs/max98090.c | 6 +- sound/soc/meson/aiu-encoder-i2s.c | 9 +- sound/soc/qcom/qdsp6/q6asm.c | 2 +- sound/usb/endpoint.c | 5 + sound/usb/mixer.c | 11 +- sound/usb/mixer_s1810c.c | 28 ++++- sound/usb/validate.c | 9 +- tools/include/linux/bitmap.h | 1 + tools/power/cpupower/lib/cpuidle.c | 5 +- .../x86_energy_perf_policy.c | 30 +++-- tools/testing/selftests/Makefile | 2 +- tools/testing/selftests/bpf/test_lirc_mode2_user.c | 2 +- tools/testing/selftests/net/fcnal-test.sh | 4 +- tools/testing/selftests/net/psock_tpacket.c | 4 +- tools/testing/selftests/net/traceroute.sh | 13 +- 332 files changed, 2243 insertions(+), 1164 deletions(-)

1 week, 3 days

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[PATCH] macintosh: smu_sensors: Drop the reference in smu_cpu_power_create()

by Haoxiang Li

In 'fail' error path, call wf_put_sensor() to drop the reference obtained by wf_get_sensor(). Fixes: 75722d3992f5 ("[PATCH] ppc64: Thermal control for SMU based machines") Cc: stable(a)vger.kernel.org Signed-off-by: Haoxiang Li <lihaoxiang(a)isrc.iscas.ac.cn> --- drivers/macintosh/windfarm_smu_sensors.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/macintosh/windfarm_smu_sensors.c b/drivers/macintosh/windfarm_smu_sensors.c index 2bdb73b34d29..5441a55732f1 100644 --- a/drivers/macintosh/windfarm_smu_sensors.c +++ b/drivers/macintosh/windfarm_smu_sensors.c @@ -374,6 +374,8 @@ smu_cpu_power_create(struct wf_sensor *volts, struct wf_sensor *amps) goto fail; return pow; fail: + wf_put_sensor(amps); + wf_put_sensor(volts); kfree(pow); return NULL; } -- 2.25.1

1 week, 3 days

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