February 2018 - Linux-stable-mirror

[Linux-stable-mirror] [PATCH] drbd: fix discard_zeroes_if_aligned regression

by Eric Wheeler

From: Eric Wheeler <git(a)linux.ewheeler.net> According to drbd.conf documentation, "To not break established and expected behaviour, and suddenly cause fstrim on thin-provisioned LVs to run out-of-space instead of freeing up space, the default value is yes." This behavior regressed in the REQ_OP_WRITE_ZEROES refactor near 45c21793 drbd: implement REQ_OP_WRITE_ZEROES 0dbed96 drbd: make intelligent use of blkdev_issue_zeroout which caused dm-thin backed DRBD volumes to zero blocks and run out of space instead of passing discard to the backing device as defined by the discard_zeroes_if_aligned option. A helper function could reduce code duplication. Signed-off-by: Eric Wheeler <drbd(a)linux.ewheeler.net> Cc: <stable(a)vger.kernel.org> # 4.14 --- drivers/block/drbd/drbd_receiver.c | 22 ++++++++++++++++++++-- drivers/block/drbd/drbd_req.c | 23 +++++++++++++++++++++-- 2 files changed, 41 insertions(+), 4 deletions(-) diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c index 62a902f..58f0e43 100644 --- a/drivers/block/drbd/drbd_receiver.c +++ b/drivers/block/drbd/drbd_receiver.c @@ -1507,9 +1507,27 @@ void drbd_bump_write_ordering(struct drbd_resource *resource, struct drbd_backin static void drbd_issue_peer_discard(struct drbd_device *device, struct drbd_peer_request *peer_req) { struct block_device *bdev = device->ldev->backing_bdev; + struct disk_conf *dc; + bool discard_zeroes_if_aligned, zeroout; - if (blkdev_issue_zeroout(bdev, peer_req->i.sector, peer_req->i.size >> 9, - GFP_NOIO, 0)) + rcu_read_lock(); + dc = rcu_dereference(device->ldev->disk_conf); + discard_zeroes_if_aligned = dc->discard_zeroes_if_aligned; + rcu_read_unlock(); + + /* Use zeroout unless discard_zeroes_if_aligned is set. + * If blkdev_issue_discard fails, then retry with blkdev_issue_zeroout. + * See also drbd_process_discard_req() in drbd_req.c. + */ + zeroout = true; + if (discard_zeroes_if_aligned && + blkdev_issue_discard(bdev, peer_req->i.sector, + peer_req->i.size >> 9, GFP_NOIO, 0) == 0) + zeroout = false; + + if (zeroout && + blkdev_issue_zeroout(bdev, peer_req->i.sector, + peer_req->i.size >> 9, GFP_NOIO, 0) != 0) peer_req->flags |= EE_WAS_ERROR; drbd_endio_write_sec_final(peer_req); diff --git a/drivers/block/drbd/drbd_req.c b/drivers/block/drbd/drbd_req.c index de8566e..070b5e7 100644 --- a/drivers/block/drbd/drbd_req.c +++ b/drivers/block/drbd/drbd_req.c @@ -1158,9 +1158,28 @@ static int drbd_process_write_request(struct drbd_request *req) static void drbd_process_discard_req(struct drbd_request *req) { struct block_device *bdev = req->device->ldev->backing_bdev; + struct drbd_device *device = req->device; + struct disk_conf *dc; + bool discard_zeroes_if_aligned, zeroout; - if (blkdev_issue_zeroout(bdev, req->i.sector, req->i.size >> 9, - GFP_NOIO, 0)) + rcu_read_lock(); + dc = rcu_dereference(device->ldev->disk_conf); + discard_zeroes_if_aligned = dc->discard_zeroes_if_aligned; + rcu_read_unlock(); + + /* Use zeroout unless discard_zeroes_if_aligned is set. + * If blkdev_issue_discard fails, then retry with blkdev_issue_zeroout. + * See also drbd_issue_peer_discard() in drbd_receiver.c. + */ + zeroout = true; + if (discard_zeroes_if_aligned && + blkdev_issue_discard(bdev, req->i.sector, req->i.size >> 9, + GFP_NOIO, 0) == 0) + zeroout = false; + + if (zeroout && + blkdev_issue_zeroout(bdev, req->i.sector, req->i.size >> 9, + GFP_NOIO, 0) != 0) req->private_bio->bi_status = BLK_STS_IOERR; bio_endio(req->private_bio); } -- 1.8.3.1

4 years, 11 months

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[Linux-stable-mirror] [PATCH v2] usb: dwc3: core: Fix ULPI PHYs and prevent phy_get/ulpi_init during suspend/resume

by Roger Quadros

In order for ULPI PHYs to work, dwc3_phy_setup() and dwc3_ulpi_init() must be doene before dwc3_core_get_phy(). commit 541768b08a40 ("usb: dwc3: core: Call dwc3_core_get_phy() before initializing phys") broke this. The other issue is that dwc3_core_get_phy() and dwc3_ulpi_init() should be called only once during the life cycle of the driver. However, as dwc3_core_init() is called during system suspend/resume it will result in multiple calls to dwc3_core_get_phy() and dwc3_ulpi_init() which is wrong. Fix this by moving dwc3_ulpi_init() out of dwc3_phy_setup() into dwc3_core_ulpi_init(). Use a flag 'ulpi_ready' to ensure that dwc3_core_ulpi_init() is called only once from dwc3_core_init(). Use another flag 'phys_ready' to call dwc3_core_get_phy() only once from dwc3_core_init(). Fixes: 541768b08a40 ("usb: dwc3: core: Call dwc3_core_get_phy() before initializing phys") Fixes: f54edb539c11 ("usb: dwc3: core: initialize ULPI before trying to get the PHY") Cc: linux-stable <stable(a)vger.kernel.org> # >= v4.13 Signed-off-by: Roger Quadros <rogerq(a)ti.com> --- Changelog: v2: - don't break ULPI case. Also take into consideration suspend/resume for ULPI case. drivers/usb/dwc3/core.c | 47 ++++++++++++++++++++++++++++++++++++----------- drivers/usb/dwc3/core.h | 5 +++++ 2 files changed, 41 insertions(+), 11 deletions(-) diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index 0783250..84382f6 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -482,6 +482,22 @@ static void dwc3_cache_hwparams(struct dwc3 *dwc) parms->hwparams8 = dwc3_readl(dwc->regs, DWC3_GHWPARAMS8); } +static int dwc3_core_ulpi_init(struct dwc3 *dwc) +{ + int intf; + int ret = 0; + + intf = DWC3_GHWPARAMS3_HSPHY_IFC(dwc->hwparams.hwparams3); + + if (intf == DWC3_GHWPARAMS3_HSPHY_IFC_ULPI || + (intf == DWC3_GHWPARAMS3_HSPHY_IFC_UTMI_ULPI && + dwc->hsphy_interface && + !strncmp(dwc->hsphy_interface, "ulpi", 4))) + ret = dwc3_ulpi_init(dwc); + + return ret; +} + /** * dwc3_phy_setup - Configure USB PHY Interface of DWC3 Core * @dwc: Pointer to our controller context structure @@ -493,7 +509,6 @@ static void dwc3_cache_hwparams(struct dwc3 *dwc) static int dwc3_phy_setup(struct dwc3 *dwc) { u32 reg; - int ret; reg = dwc3_readl(dwc->regs, DWC3_GUSB3PIPECTL(0)); @@ -564,9 +579,6 @@ static int dwc3_phy_setup(struct dwc3 *dwc) } /* FALLTHROUGH */ case DWC3_GHWPARAMS3_HSPHY_IFC_ULPI: - ret = dwc3_ulpi_init(dwc); - if (ret) - return ret; /* FALLTHROUGH */ default: break; @@ -723,6 +735,7 @@ static void dwc3_core_setup_global_control(struct dwc3 *dwc) } static int dwc3_core_get_phy(struct dwc3 *dwc); +static int dwc3_core_ulpi_init(struct dwc3 *dwc); /** * dwc3_core_init - Low-level initialization of DWC3 Core @@ -754,17 +767,27 @@ static int dwc3_core_init(struct dwc3 *dwc) dwc->maximum_speed = USB_SPEED_HIGH; } - ret = dwc3_core_get_phy(dwc); + ret = dwc3_phy_setup(dwc); if (ret) goto err0; - ret = dwc3_core_soft_reset(dwc); - if (ret) - goto err0; + if (!dwc->ulpi_ready) { + ret = dwc3_core_ulpi_init(dwc); + if (ret) + goto err0; + dwc->ulpi_ready = true; + } - ret = dwc3_phy_setup(dwc); + if (!dwc->phys_ready) { + ret = dwc3_core_get_phy(dwc); + if (ret) + goto err0a; + dwc->phys_ready = true; + } + + ret = dwc3_core_soft_reset(dwc); if (ret) - goto err0; + goto err0a; dwc3_core_setup_global_control(dwc); dwc3_core_num_eps(dwc); @@ -837,6 +860,9 @@ static int dwc3_core_init(struct dwc3 *dwc) phy_exit(dwc->usb2_generic_phy); phy_exit(dwc->usb3_generic_phy); +err0a: + dwc3_ulpi_exit(dwc); + err0: return ret; } @@ -1229,7 +1255,6 @@ static int dwc3_probe(struct platform_device *pdev) err3: dwc3_free_event_buffers(dwc); - dwc3_ulpi_exit(dwc); err2: pm_runtime_allow(&pdev->dev); diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index 4a4a4c9..6b202e3 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -795,7 +795,9 @@ struct dwc3_scratchpad_array { * @usb3_phy: pointer to USB3 PHY * @usb2_generic_phy: pointer to USB2 PHY * @usb3_generic_phy: pointer to USB3 PHY + * @phys_ready: flag to indicate that PHYs are ready * @ulpi: pointer to ulpi interface + * @ulpi_ready: flag to indicate that ULPI is initialized * @isoch_delay: wValue from Set Isochronous Delay request; * @u2sel: parameter from Set SEL request. * @u2pel: parameter from Set SEL request. @@ -893,7 +895,10 @@ struct dwc3 { struct phy *usb2_generic_phy; struct phy *usb3_generic_phy; + bool phys_ready; + struct ulpi *ulpi; + bool ulpi_ready; void __iomem *regs; size_t regs_size; -- cheers, -roger Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki. Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki

5 years, 4 months

3
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Re: [Linux-stable-mirror] stable/linux-3.16.y build: 178 builds: 1 failed, 177 passed, 2 errors, 57 warnings (v3.16.52)

by Arnd Bergmann

On Tue, Jan 2, 2018 at 12:48 PM, kernelci.org bot <bot(a)kernelci.org> wrote: Hi Ben, almost a clean build with kernelci! > Errors summary: > 1 drivers/scsi/mpt2sas/mpt2sas_base.c:3550:1: internal compiler error: in extract_constrain_insn, at recog.c:2190 > 1 drivers/scsi/mpt2sas/mpt2sas_base.c:3550:1: error: insn does not satisfy its constraints: See earlier discussion https://www.spinics.net/lists/stable/msg195996.html > Warnings summary: > 54 include/linux/stddef.h:8:14: warning: 'return' with a value, in function returning void This comes from an incorrect backport of commit 49e67dd17649 ("of: fdt: add missing allocation-failure check") It's harmless, and stable/linux-3.18.y has the correct version: --- a/drivers/of/fdt.c +++ b/drivers/of/fdt.c @@ -380,6 +380,6 @@ static void __unflatten_device_tree(void *blob, /* Allocate memory for the expanded device tree */ mem = dt_alloc(size + 4, __alignof__(struct device_node)); if (!mem) - return NULL; + return; memset(mem, 0, size); > 2 ipc/sem.c:377:6: warning: '___p1' may be used uninitialized in this function [-Wmaybe-uninitialized] This code was last touched in 3.16 by the backport of commit 5864a2fd3088 ("ipc/sem.c: fix complex_count vs. simple op race") The warning is in "smp_load_acquire(&sma->complex_mode))", and I suspect that commit 27d7be1801a4 ("ipc/sem.c: avoid using spin_unlock_wait()") avoided the warning upstream by removing the smp_mb() before it. The code is way too complex for a fly-by analysis, so I'm adding Manfred to Cc here. It may be worth comparing the full list of backports that went into ipc/sem.c in 3.16.y with those in 3.18.y and 4.1.y that don't have the warning. Here is what I see in the git history: $ git log --oneline v3.16..stable/linux-3.16.y ipc/sem.c accb9f16adba ipc/sem.c: fix complex_count vs. simple op race 5b11c133308b ipc: remove use of seq_printf return value 08397b1a5cd4 sysv, ipc: fix security-layer leaking 35cfc2b3a9da ipc/sem.c: fully initialize sem_array before making it visible 69a9a86b645f ipc/sem.c: update/correct memory barriers 30f995ba77ca ipc/sem.c: change memory barrier in sem_lock() to smp_rmb() 76ce4fe19d6b ipc,sem: fix use after free on IPC_RMID after a task using same semaphore set exits $ git log --oneline v3.16..stable/linux-3.18.y ipc/sem.c 7dd90826dfba sysv, ipc: fix security-layer leaking ff12efa03da1 ipc/sem.c: update/correct memory barriers 38b50c47c25e ipc,sem: fix use after free on IPC_RMID after a task using same semaphore set exits e8577d1f0329 ipc/sem.c: fully initialize sem_array before making it visible $ git log --oneline v3.16..stable/linux-4.1.y ipc/sem.c e2b438fdfa4d sysv, ipc: fix security-layer leaking b6805da60f01 ipc/sem.c: update/correct memory barriers 7be83cf01024 ipc,sem: fix use after free on IPC_RMID after a task using same semaphore set exits 7f032d6ef615 ipc: remove use of seq_printf return value 52644c9ab3fa ipc,sem: use current->state helpers 2e094abfd1f2 ipc/sem.c: change memory barrier in sem_lock() to smp_rmb() e8577d1f0329 ipc/sem.c: fully initialize sem_array before making it visible $ git log --oneline v3.16..stable/linux-4.4.y ipc/sem.c f6031d95320d ipc/sem.c: fix complex_count vs. simple op race 62659f0b9ed7 sysv, ipc: fix security-layer leaking 3ed1f8a99d70 ipc/sem.c: update/correct memory barriers a97955844807 ipc,sem: remove uneeded sem_undo_list lock usage in exit_sem() 602b8593d2b4 ipc,sem: fix use after free on IPC_RMID after a task using same semaphore set exits 55b7ae50167e ipc: rename ipc_obtain_object 7f032d6ef615 ipc: remove use of seq_printf return value 52644c9ab3fa ipc,sem: use current->state helpers 2e094abfd1f2 ipc/sem.c: change memory barrier in sem_lock() to smp_rmb() e8577d1f0329 ipc/sem.c: fully initialize sem_array before making it visible $ git log --oneline v3.16..stable/linux-4.9.y ipc/sem.c 2a1613a586de ipc/sem.c: add cond_resched in exit_sme 5864a2fd3088 ipc/sem.c: fix complex_count vs. simple op race 9b24fef9f041 sysv, ipc: fix security-layer leaking be3e78449803 locking/spinlock: Update spin_unlock_wait() users 33ac279677dc locking/barriers: Introduce smp_acquire__after_ctrl_dep() a5f4db877177 ipc/sem: make semctl setting sempid consistent 1d5cfdb07628 tree wide: use kvfree() than conditional kfree()/vfree() 3ed1f8a99d70 ipc/sem.c: update/correct memory barriers a97955844807 ipc,sem: remove uneeded sem_undo_list lock usage in exit_sem() 602b8593d2b4 ipc,sem: fix use after free on IPC_RMID after a task using same semaphore set exits 55b7ae50167e ipc: rename ipc_obtain_object 7f032d6ef615 ipc: remove use of seq_printf return value 52644c9ab3fa ipc,sem: use current->state helpers 2e094abfd1f2 ipc/sem.c: change memory barrier in sem_lock() to smp_rmb() e8577d1f0329 ipc/sem.c: fully initialize sem_array before making it visible > 1 arch/arm/kernel/head-nommu.S:167: Warning: Use of r13 as a source register is deprecated when r15 is the destination register. Fixed by backporting: 970d96f9a81b ("ARM: 8383/1: nommu: avoid deprecated source register on mov") Arnd

5 years, 5 months

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Re: [linux-stable-rc:linux-3.16.y 2872/3488] head64.c:undefined reference to `__gcov_exit'

by Arnd Bergmann

On Fri, Feb 16, 2018 at 7:21 PM, kbuild test robot <fengguang.wu(a)intel.com> wrote: > Hi Andrey, > > It's probably a bug fix that unveils the link errors. > > tree: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-3.16.y > head: 0b9f4cdd4d75131d8886b919bbf6e0c98906d36e > commit: 3cb0dc19883f0c69225311d4f76aa8128d3681a4 [2872/3488] module: fix types of device tables aliases > config: x86_64-allmodconfig (attached as .config) > compiler: gcc-7 (Debian 7.3.0-1) 7.3.0 > reproduce: > git checkout 3cb0dc19883f0c69225311d4f76aa8128d3681a4 > # save the attached .config to linux build tree > make ARCH=x86_64 > > All errors (new ones prefixed by >>): > > arch/x86/kernel/head64.o: In function `_GLOBAL__sub_D_00100_1_early_pmd_flags': >>> head64.c:(.text.exit+0x5): undefined reference to `__gcov_exit' > arch/x86/kernel/head.o: In function `_GLOBAL__sub_D_00100_1_reserve_ebda_region': > head.c:(.text.exit+0x5): undefined reference to `__gcov_exit' > init/built-in.o: In function `_GLOBAL__sub_D_00100_1___ksymtab_system_state': > main.c:(.text.exit+0x5): undefined reference to `__gcov_exit' > init/built-in.o: In function `_GLOBAL__sub_D_00100_1_root_mountflags': > do_mounts.c:(.text.exit+0x10): undefined reference to `__gcov_exit' > init/built-in.o: In function `_GLOBAL__sub_D_00100_1_initrd_load': > do_mounts_initrd.c:(.text.exit+0x1b): undefined reference to `__gcov_exit' > init/built-in.o:initramfs.c:(.text.exit+0x26): more undefined references to `__gcov_exit' follow I think this is a result of using a too new compiler with the old 3.16 kernel. In order to build with gcc-7.3, you need to backport 05384213436a ("gcov: support GCC 7.1") It's already part of stable-3.18 and later, but not 3.2 and 3.16. Arnd

5 years, 5 months

2
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[PATCH 3.16] staging: usbip stub_rx fix static checker warning on unnecessary checks

by Shuah Khan

Upstream commit 10c901209306 ("usbip: stub_rx: fix static checker warning on unnecessary checks") Back-port fix for static checker warning on unnecessary checks smatch warnings: drivers/staging/usbip/stub_rx.c:360 get_pipe() warn: impossible condition '(pdu->u.cmd_submit.transfer_buffer_length > ((~0 >> 1))) => (s32min-s32max > s32max)' drivers/staging/usbip/stub_rx.c:501 stub_recv_cmd_submit() warn: always true condition '(pdu->u.cmd_submit.transfer_buffer_length <= ((~0 >> 1))) => (s32min-s32max <= s32max)' Reported-by: Dan Carpenter <dan.carpenter(a)oracle.com> Signed-off-by: Shuah Khan <shuahkh(a)osg.samsung.com> --- drivers/staging/usbip/stub_rx.c | 11 +---------- 1 file changed, 1 insertion(+), 10 deletions(-) diff --git a/drivers/staging/usbip/stub_rx.c b/drivers/staging/usbip/stub_rx.c index 35f59747122a..d8544ab9577b 100644 --- a/drivers/staging/usbip/stub_rx.c +++ b/drivers/staging/usbip/stub_rx.c @@ -356,14 +356,6 @@ static int get_pipe(struct stub_device *sdev, struct usbip_header *pdu) epd = &ep->desc; - /* validate transfer_buffer_length */ - if (pdu->u.cmd_submit.transfer_buffer_length > INT_MAX) { - dev_err(&sdev->udev->dev, - "CMD_SUBMIT: -EMSGSIZE transfer_buffer_length %d\n", - pdu->u.cmd_submit.transfer_buffer_length); - return -1; - } - if (usb_endpoint_xfer_control(epd)) { if (dir == USBIP_DIR_OUT) return usb_sndctrlpipe(udev, epnum); @@ -497,8 +489,7 @@ static void stub_recv_cmd_submit(struct stub_device *sdev, } /* allocate urb transfer buffer, if needed */ - if (pdu->u.cmd_submit.transfer_buffer_length > 0 && - pdu->u.cmd_submit.transfer_buffer_length <= INT_MAX) { + if (pdu->u.cmd_submit.transfer_buffer_length > 0) { priv->urb->transfer_buffer = kzalloc(pdu->u.cmd_submit.transfer_buffer_length, GFP_KERNEL); -- 2.14.1

5 years, 5 months

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[Linux-stable-mirror] [PATCH 4.4 000/105] 4.4.106-stable review

by Greg Kroah-Hartman

This is the start of the stable review cycle for the 4.4.106 release. There are 105 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 Sun Dec 17 09:22:39 UTC 2017. Anything received after that time might be too late. The whole patch series can be found in one patch at: kernel.org/pub/linux/kernel/v4.x/stable-review/patch-4.4.106-rc1.gz or in the git tree and branch at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-4.4.y and the diffstat can be found below. thanks, greg k-h ------------- Pseudo-Shortlog of commits: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Linux 4.4.106-rc1 Vincent Pelletier <plr.vincent(a)gmail.com> usb: gadget: ffs: Forbid usb_ep_alloc_request from sleeping Marc Zyngier <marc.zyngier(a)arm.com> arm: KVM: Fix VTTBR_BADDR_MASK BUG_ON off-by-one Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Revert "x86/mm/pat: Ensure cpa->pfn only contains page frame numbers" Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Revert "x86/efi: Hoist page table switching code into efi_call_virt()" Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Revert "x86/efi: Build our own page table structures" Eric Dumazet <edumazet(a)google.com> net/packet: fix a race in packet_bind() and packet_notifier() Mike Maloney <maloney(a)google.com> packet: fix crash in fanout_demux_rollover() Hangbin Liu <liuhangbin(a)gmail.com> sit: update frag_off info Håkon Bugge <Haakon.Bugge(a)oracle.com> rds: Fix NULL pointer dereference in __rds_rdma_map Jon Maloy <jon.maloy(a)ericsson.com> tipc: fix memory leak in tipc_accept_from_sock() Al Viro <viro(a)zeniv.linux.org.uk> more bio_map_user_iov() leak fixes Heiko Carstens <heiko.carstens(a)de.ibm.com> s390: always save and restore all registers on context switch Masamitsu Yamazaki <m-yamazaki(a)ah.jp.nec.com> ipmi: Stop timers before cleaning up the module Paul Moore <paul(a)paul-moore.com> audit: ensure that 'audit=1' actually enables audit for PID 1 Keefe Liu <liuqifa(a)huawei.com> ipvlan: fix ipv6 outbound device David Howells <dhowells(a)redhat.com> afs: Connect up the CB.ProbeUuid Majd Dibbiny <majd(a)mellanox.com> IB/mlx5: Assign send CQ and recv CQ of UMR QP Mark Bloch <markb(a)mellanox.com> IB/mlx4: Increase maximal message size under UD QP Herbert Xu <herbert(a)gondor.apana.org.au> xfrm: Copy policy family in clone_policy Jason Baron <jbaron(a)akamai.com> jump_label: Invoke jump_label_test() via early_initcall() Arvind Yadav <arvind.yadav.cs(a)gmail.com> atm: horizon: Fix irq release error Xin Long <lucien.xin(a)gmail.com> sctp: use the right sk after waking up from wait_buf sleep Xin Long <lucien.xin(a)gmail.com> sctp: do not free asoc when it is already dead in sctp_sendmsg Pavel Tatashin <pasha.tatashin(a)oracle.com> sparc64/mm: set fields in deferred pages Ming Lei <ming.lei(a)redhat.com> block: wake up all tasks blocked in get_request() Chuck Lever <chuck.lever(a)oracle.com> sunrpc: Fix rpc_task_begin trace point Trond Myklebust <trond.myklebust(a)primarydata.com> NFS: Fix a typo in nfs_rename() Randy Dunlap <rdunlap(a)infradead.org> dynamic-debug-howto: fix optional/omitted ending line number to be LARGE instead of 0 Stephen Bates <sbates(a)raithlin.com> lib/genalloc.c: make the avail variable an atomic_long_t Xin Long <lucien.xin(a)gmail.com> route: update fnhe_expires for redirect when the fnhe exists Xin Long <lucien.xin(a)gmail.com> route: also update fnhe_genid when updating a route cache Ben Hutchings <ben.hutchings(a)codethink.co.uk> mac80211_hwsim: Fix memory leak in hwsim_new_radio_nl() Masahiro Yamada <yamada.masahiro(a)socionext.com> kbuild: pkg: use --transform option to prefix paths in tar Jérémy Lefaure <jeremy.lefaure(a)lse.epita.fr> EDAC, i5000, i5400: Fix definition of NRECMEMB register Jérémy Lefaure <jeremy.lefaure(a)lse.epita.fr> EDAC, i5000, i5400: Fix use of MTR_DRAM_WIDTH macro Alexey Kardashevskiy <aik(a)ozlabs.ru> powerpc/powernv/ioda2: Gracefully fail if too many TCE levels requested Jim Qu <Jim.Qu(a)amd.com> drm/amd/amdgpu: fix console deadlock if late init failed Jan Kara <jack(a)suse.cz> axonram: Fix gendisk handling Florian Westphal <fw(a)strlen.de> netfilter: don't track fragmented packets Johannes Thumshirn <jthumshirn(a)suse.de> zram: set physical queue limits to avoid array out of bounds accesses Chris Brandt <chris.brandt(a)renesas.com> i2c: riic: fix restart condition Krzysztof Kozlowski <krzk(a)kernel.org> crypto: s5p-sss - Fix completing crypto request in IRQ handler WANG Cong <xiyou.wangcong(a)gmail.com> ipv6: reorder icmpv6_init() and ip6_mr_init() Michal Schmidt <mschmidt(a)redhat.com> bnx2x: do not rollback VF MAC/VLAN filters we did not configure Michal Schmidt <mschmidt(a)redhat.com> bnx2x: fix possible overrun of VFPF multicast addresses array Michal Schmidt <mschmidt(a)redhat.com> bnx2x: prevent crash when accessing PTP with interface down Blomme, Maarten <Maarten.Blomme(a)flir.com> spi_ks8995: fix "BUG: key accdaa28 not in .data!" Mark Rutland <mark.rutland(a)arm.com> arm64: KVM: Survive unknown traps from guests Mark Rutland <mark.rutland(a)arm.com> arm: KVM: Survive unknown traps from guests Wanpeng Li <wanpeng.li(a)hotmail.com> KVM: nVMX: reset nested_run_pending if the vCPU is going to be reset Franck Demathieu <fdemathieu(a)gmail.com> irqchip/crossbar: Fix incorrect type of register size James Smart <jsmart2021(a)gmail.com> scsi: lpfc: Fix crash during Hardware error recovery on SLI3 adapters Tejun Heo <tj(a)kernel.org> workqueue: trigger WARN if queue_delayed_work() is called with NULL @wq Tejun Heo <tj(a)kernel.org> libata: drop WARN from protocol error in ata_sff_qc_issue() Jim Mattson <jmattson(a)google.com> kvm: nVMX: VMCLEAR should not cause the vCPU to shut down Christophe JAILLET <christophe.jaillet(a)wanadoo.fr> USB: gadgetfs: Fix a potential memory leak in 'dev_config()' John Keeping <john(a)metanate.com> usb: gadget: configs: plug memory leak Daniel Drake <drake(a)endlessm.com> HID: chicony: Add support for another ASUS Zen AiO keyboard Phil Reid <preid(a)electromag.com.au> gpio: altera: Use handle_level_irq when configured as a level_high Guenter Roeck <linux(a)roeck-us.net> ARM: OMAP2+: Release device node after it is no longer needed. Guenter Roeck <linux(a)roeck-us.net> ARM: OMAP2+: Fix device node reference counts David Daney <david.daney(a)cavium.com> module: set __jump_table alignment to 8 Sachin Sant <sachinp(a)linux.vnet.ibm.com> selftest/powerpc: Fix false failures for skipped tests Thomas Gleixner <tglx(a)linutronix.de> x86/hpet: Prevent might sleep splat on resume Ladislav Michl <ladis(a)linux-mips.org> ARM: OMAP2+: gpmc-onenand: propagate error on initialization failure Steffen Klassert <steffen.klassert(a)secunet.com> vti6: Don't report path MTU below IPV6_MIN_MTU. Sasha Levin <alexander.levin(a)verizon.com> Revert "s390/kbuild: enable modversions for symbols exported from asm" Sasha Levin <alexander.levin(a)verizon.com> Revert "spi: SPI_FSL_DSPI should depend on HAS_DMA" Sasha Levin <alexander.levin(a)verizon.com> Revert "drm/armada: Fix compile fail" Kirill A. Shutemov <kirill.shutemov(a)linux.intel.com> mm: drop unused pmdp_huge_get_and_clear_notify() Kirill A. Shutemov <kirill.shutemov(a)linux.intel.com> thp: fix MADV_DONTNEED vs. numa balancing race Kirill A. Shutemov <kirill.shutemov(a)linux.intel.com> thp: reduce indentation level in change_huge_pmd() Stephen Hemminger <stephen(a)networkplumber.org> scsi: storvsc: Workaround for virtual DVD SCSI version Russell King <rmk+kernel(a)armlinux.org.uk> ARM: avoid faulting on qemu Russell King <rmk+kernel(a)armlinux.org.uk> ARM: BUG if jumping to usermode address in kernel mode Dave Martin <Dave.Martin(a)arm.com> arm64: fpsimd: Prevent registers leaking from dead tasks Andrew Honig <ahonig(a)google.com> KVM: VMX: remove I/O port 0x80 bypass on Intel hosts Kristina Martsenko <kristina.martsenko(a)arm.com> arm64: KVM: fix VTTBR_BADDR_MASK BUG_ON off-by-one Laurent Caumont <lcaumont2(a)gmail.com> media: dvb: i2c transfers over usb cannot be done from stack Marek Szyprowski <m.szyprowski(a)samsung.com> drm/exynos: gem: Drop NONCONTIG flag for buffers allocated without IOMMU Dave Gordon <david.s.gordon(a)intel.com> drm: extra printk() wrapper macros Daniel Thompson <daniel.thompson(a)linaro.org> kdb: Fix handling of kallsyms_symbol_next() return value Heiko Carstens <heiko.carstens(a)de.ibm.com> s390: fix compat system call table Robin Murphy <robin.murphy(a)arm.com> iommu/vt-d: Fix scatterlist offset handling Jaejoong Kim <climbbb.kim(a)gmail.com> ALSA: usb-audio: Add check return value for usb_string() Jaejoong Kim <climbbb.kim(a)gmail.com> ALSA: usb-audio: Fix out-of-bound error Takashi Iwai <tiwai(a)suse.de> ALSA: seq: Remove spurious WARN_ON() at timer check Robb Glasser <rglasser(a)google.com> ALSA: pcm: prevent UAF in snd_pcm_info Rafael J. Wysocki <rafael.j.wysocki(a)intel.com> x86/PCI: Make broadcom_postcore_init() check acpi_disabled Eric Biggers <ebiggers(a)google.com> X.509: reject invalid BIT STRING for subjectPublicKey Eric Biggers <ebiggers(a)google.com> ASN.1: check for error from ASN1_OP_END__ACT actions Eric Biggers <ebiggers(a)google.com> ASN.1: fix out-of-bounds read when parsing indefinite length item Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> efi: Move some sysfs files to be read-only by root Huacai Chen <chenhc(a)lemote.com> scsi: libsas: align sata_device's rps_resp on a cacheline William Breathitt Gray <vilhelm.gray(a)gmail.com> isa: Prevent NULL dereference in isa_bus driver callbacks Paul Meyer <Paul.Meyer(a)microsoft.com> hv: kvp: Avoid reading past allocated blocks from KVP file weiping zhang <zwp10758(a)gmail.com> virtio: release virtio index when fail to device_register Martin Kelly <mkelly(a)xevo.com> can: usb_8dev: cancel urb on -EPIPE and -EPROTO Martin Kelly <mkelly(a)xevo.com> can: esd_usb2: cancel urb on -EPIPE and -EPROTO Martin Kelly <mkelly(a)xevo.com> can: ems_usb: cancel urb on -EPIPE and -EPROTO Martin Kelly <mkelly(a)xevo.com> can: kvaser_usb: cancel urb on -EPIPE and -EPROTO Jimmy Assarsson <jimmyassarsson(a)gmail.com> can: kvaser_usb: ratelimit errors if incomplete messages are received Jimmy Assarsson <jimmyassarsson(a)gmail.com> can: kvaser_usb: Fix comparison bug in kvaser_usb_read_bulk_callback() Jimmy Assarsson <jimmyassarsson(a)gmail.com> can: kvaser_usb: free buf in error paths Oliver Stäbler <oliver.staebler(a)bytesatwork.ch> can: ti_hecc: Fix napi poll return value for repoll ------------- Diffstat: Makefile | 4 +- arch/arm/include/asm/assembler.h | 18 +++ arch/arm/include/asm/kvm_arm.h | 4 +- arch/arm/kernel/entry-header.S | 6 + arch/arm/kvm/handle_exit.c | 19 +-- arch/arm/mach-omap2/gpmc-onenand.c | 10 +- arch/arm/mach-omap2/omap_hwmod_3xxx_data.c | 25 ++-- arch/arm64/include/asm/kvm_arm.h | 3 +- arch/arm64/kernel/process.c | 9 ++ arch/arm64/kvm/handle_exit.c | 19 +-- arch/powerpc/platforms/powernv/pci-ioda.c | 3 + arch/powerpc/sysdev/axonram.c | 5 +- arch/s390/include/asm/asm-prototypes.h | 8 -- arch/s390/include/asm/switch_to.h | 19 ++- arch/s390/kernel/syscalls.S | 6 +- arch/sparc/mm/init_64.c | 9 +- arch/x86/include/asm/efi.h | 26 ---- arch/x86/kernel/hpet.c | 2 +- arch/x86/kvm/vmx.c | 31 ++--- arch/x86/mm/pageattr.c | 17 ++- arch/x86/pci/broadcom_bus.c | 2 +- arch/x86/platform/efi/efi.c | 39 +++--- arch/x86/platform/efi/efi_32.c | 5 - arch/x86/platform/efi/efi_64.c | 137 ++++++---------------- arch/x86/platform/efi/efi_stub_64.S | 43 +++++++ block/bio.c | 14 ++- block/blk-core.c | 4 +- crypto/asymmetric_keys/x509_cert_parser.c | 2 + drivers/ata/libata-sff.c | 1 - drivers/atm/horizon.c | 2 +- drivers/base/isa.c | 10 +- drivers/block/zram/zram_drv.c | 2 + drivers/char/ipmi/ipmi_si_intf.c | 44 +++---- drivers/crypto/s5p-sss.c | 5 +- drivers/edac/i5000_edac.c | 8 +- drivers/edac/i5400_edac.c | 9 +- drivers/firmware/efi/efi.c | 3 +- drivers/firmware/efi/esrt.c | 15 +-- drivers/firmware/efi/runtime-map.c | 10 +- drivers/gpio/gpio-altera.c | 26 ++-- drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 5 +- drivers/gpu/drm/armada/Makefile | 2 - drivers/gpu/drm/exynos/exynos_drm_gem.c | 9 ++ drivers/hid/Kconfig | 4 +- drivers/hid/hid-chicony.c | 1 + drivers/hid/hid-core.c | 1 + drivers/hid/hid-ids.h | 1 + drivers/i2c/busses/i2c-riic.c | 6 +- drivers/infiniband/hw/mlx4/qp.c | 2 +- drivers/infiniband/hw/mlx5/main.c | 2 + drivers/iommu/intel-iommu.c | 8 +- drivers/irqchip/irq-crossbar.c | 8 +- drivers/media/usb/dvb-usb/dibusb-common.c | 16 ++- drivers/memory/omap-gpmc.c | 4 +- drivers/net/can/ti_hecc.c | 3 + drivers/net/can/usb/ems_usb.c | 2 + drivers/net/can/usb/esd_usb2.c | 2 + drivers/net/can/usb/kvaser_usb.c | 13 +- drivers/net/can/usb/usb_8dev.c | 2 + drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c | 20 +++- drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c | 8 +- drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.h | 1 + drivers/net/ethernet/broadcom/bnx2x/bnx2x_vfpf.c | 23 ++-- drivers/net/ipvlan/ipvlan_core.c | 2 +- drivers/net/phy/spi_ks8995.c | 1 + drivers/net/wireless/mac80211_hwsim.c | 5 +- drivers/scsi/lpfc/lpfc_els.c | 14 ++- drivers/scsi/storvsc_drv.c | 27 +++-- drivers/spi/Kconfig | 1 - drivers/usb/gadget/configfs.c | 1 + drivers/usb/gadget/function/f_fs.c | 2 +- drivers/usb/gadget/legacy/inode.c | 4 +- drivers/virtio/virtio.c | 2 + fs/afs/cmservice.c | 3 + fs/nfs/dir.c | 2 +- include/drm/drmP.h | 26 +++- include/linux/genalloc.h | 3 +- include/linux/mmu_notifier.h | 13 -- include/linux/omap-gpmc.h | 5 +- include/linux/sysfs.h | 6 + include/scsi/libsas.h | 2 +- kernel/audit.c | 10 +- kernel/debug/kdb/kdb_io.c | 2 +- kernel/jump_label.c | 2 +- kernel/workqueue.c | 1 + lib/asn1_decoder.c | 49 ++++---- lib/dynamic_debug.c | 4 + lib/genalloc.c | 10 +- mm/huge_memory.c | 82 +++++++++---- net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c | 4 + net/ipv4/netfilter/nf_nat_l3proto_ipv4.c | 5 - net/ipv4/route.c | 14 ++- net/ipv6/af_inet6.c | 10 +- net/ipv6/ip6_vti.c | 8 +- net/ipv6/sit.c | 1 + net/packet/af_packet.c | 37 +++--- net/packet/internal.h | 1 - net/rds/rdma.c | 2 +- net/sctp/socket.c | 38 ++++-- net/sunrpc/sched.c | 3 +- net/tipc/server.c | 1 + net/xfrm/xfrm_policy.c | 1 + scripts/module-common.lds | 2 + scripts/package/Makefile | 5 +- sound/core/pcm.c | 2 + sound/core/seq/seq_timer.c | 2 +- sound/usb/mixer.c | 13 +- tools/hv/hv_kvp_daemon.c | 70 +++-------- tools/testing/selftests/powerpc/harness.c | 6 +- 109 files changed, 701 insertions(+), 570 deletions(-)

5 years, 7 months

9
123
0 0

[Linux-stable-mirror] [PATCH] soc/tegra: pmc: fix child-node lookup

by Johan Hovold

Fix child-node lookup during probe, which ended up searching the whole device tree depth-first starting at the parent rather than just matching on its children. To make things worse, the parent pmc node could end up being prematurely freed as of_find_node_by_name() drops a reference to its first argument. Fixes: 3568df3d31d6 ("soc: tegra: Add thermal reset (thermtrip) support to PMC") Cc: stable <stable(a)vger.kernel.org> # 4.0 Cc: Mikko Perttunen <mperttunen(a)nvidia.com> Signed-off-by: Johan Hovold <johan(a)kernel.org> --- drivers/soc/tegra/pmc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/soc/tegra/pmc.c b/drivers/soc/tegra/pmc.c index 0453ff6839a7..7e9ef3431bea 100644 --- a/drivers/soc/tegra/pmc.c +++ b/drivers/soc/tegra/pmc.c @@ -1321,7 +1321,7 @@ static void tegra_pmc_init_tsense_reset(struct tegra_pmc *pmc) if (!pmc->soc->has_tsense_reset) return; - np = of_find_node_by_name(pmc->dev->of_node, "i2c-thermtrip"); + np = of_get_child_by_name(pmc->dev->of_node, "i2c-thermtrip"); if (!np) { dev_warn(dev, "i2c-thermtrip node not found, %s.\n", disabled); return; -- 2.15.0

5 years, 8 months

3
5
0 0

[Linux-stable-mirror] [PATCH] scsi: lpfc: Switch memcpy_fromio() to __read32_copy()

by Huacai Chen

In commit bc73905abf770192 ("[SCSI] lpfc 8.3.16: SLI Additions, updates, and code cleanup"), lpfc_memcpy_to_slim() have switched memcpy_toio() to __write32_copy() in order to prevent unaligned 64 bit copy. Recently, we found that lpfc_memcpy_from_slim() have similar issues, so let it switch memcpy_fromio() to __read32_copy(). Cc: stable(a)vger.kernel.org Signed-off-by: Huacai Chen <chenhc(a)lemote.com> --- drivers/scsi/lpfc/lpfc_compat.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/scsi/lpfc/lpfc_compat.h b/drivers/scsi/lpfc/lpfc_compat.h index 6b32b0a..47d4fad 100644 --- a/drivers/scsi/lpfc/lpfc_compat.h +++ b/drivers/scsi/lpfc/lpfc_compat.h @@ -91,8 +91,8 @@ lpfc_memcpy_to_slim( void __iomem *dest, void *src, unsigned int bytes) static inline void lpfc_memcpy_from_slim( void *dest, void __iomem *src, unsigned int bytes) { - /* actually returns 1 byte past dest */ - memcpy_fromio( dest, src, bytes); + /* convert bytes in argument list to word count for copy function */ + __ioread32_copy(dest, src, bytes / sizeof(uint32_t)); } #endif /* __BIG_ENDIAN */ -- 2.7.0

5 years, 9 months

3
5
0 0

[Linux-stable-mirror] [PATCH] MIPS: Fix arch_trigger_cpumask_backtrace()

by Huacai Chen

SysRq-L and RCU stall detector call arch_trigger_cpumask_backtrace() to trigger other CPU's backtrace, but its behavior is totally broken. The root cause is arch_trigger_cpumask_backtrace() use call-function IPI in irq context, which trigger deadlocks in smp_call_function_single() and smp_call_function_many(). This patch fix arch_trigger_cpumask_backtrace() by: 1, Use a dedecated IPI (SMP_CPU_BACKTRACE) to trigger backtraces; 2, If myself is in target cpumask, do backtrace and clear myself; 3, Use a spinlock to avoid parallel backtrace output; 4, Handle SMP_CPU_BACKTRACE IPI for Loongson-3. I have attempted to implement SMP_CPU_BACKTRACE for all MIPS CPUs, but I failed because some of their IPIs are not extensible. :( Cc: stable(a)vger.kernel.org Signed-off-by: Huacai Chen <chenhc(a)lemote.com> --- arch/mips/include/asm/smp.h | 3 +++ arch/mips/kernel/process.c | 23 ++++++++++++++++++----- arch/mips/loongson64/loongson-3/smp.c | 6 ++++++ 3 files changed, 27 insertions(+), 5 deletions(-) diff --git a/arch/mips/include/asm/smp.h b/arch/mips/include/asm/smp.h index 88ebd83..b0521f4 100644 --- a/arch/mips/include/asm/smp.h +++ b/arch/mips/include/asm/smp.h @@ -43,6 +43,7 @@ extern int __cpu_logical_map[NR_CPUS]; /* Octeon - Tell another core to flush its icache */ #define SMP_ICACHE_FLUSH 0x4 #define SMP_ASK_C0COUNT 0x8 +#define SMP_CPU_BACKTRACE 0x10 /* Mask of CPUs which are currently definitely operating coherently */ extern cpumask_t cpu_coherent_mask; @@ -81,6 +82,8 @@ static inline void __cpu_die(unsigned int cpu) extern void play_dead(void); #endif +void arch_dump_stack(void); + /* * This function will set up the necessary IPIs for Linux to communicate * with the CPUs in mask. diff --git a/arch/mips/kernel/process.c b/arch/mips/kernel/process.c index 57028d4..647e15d 100644 --- a/arch/mips/kernel/process.c +++ b/arch/mips/kernel/process.c @@ -655,26 +655,39 @@ unsigned long arch_align_stack(unsigned long sp) return sp & ALMASK; } -static void arch_dump_stack(void *info) +void arch_dump_stack(void) { struct pt_regs *regs; + static arch_spinlock_t lock = __ARCH_SPIN_LOCK_UNLOCKED; + arch_spin_lock(&lock); regs = get_irq_regs(); if (regs) show_regs(regs); dump_stack(); + arch_spin_unlock(&lock); } void arch_trigger_cpumask_backtrace(const cpumask_t *mask, bool exclude_self) { long this_cpu = get_cpu(); + struct cpumask backtrace_mask; + extern const struct plat_smp_ops *mp_ops; + + cpumask_copy(&backtrace_mask, mask); + if (cpumask_test_cpu(this_cpu, mask)) { + if (!exclude_self) { + struct pt_regs *regs = get_irq_regs(); + if (regs) + show_regs(regs); + dump_stack(); + } + cpumask_clear_cpu(this_cpu, &backtrace_mask); + } - if (cpumask_test_cpu(this_cpu, mask) && !exclude_self) - dump_stack(); - - smp_call_function_many(mask, arch_dump_stack, NULL, 1); + mp_ops->send_ipi_mask(&backtrace_mask, SMP_CPU_BACKTRACE); put_cpu(); } diff --git a/arch/mips/loongson64/loongson-3/smp.c b/arch/mips/loongson64/loongson-3/smp.c index 8501109..0655114 100644 --- a/arch/mips/loongson64/loongson-3/smp.c +++ b/arch/mips/loongson64/loongson-3/smp.c @@ -291,6 +291,12 @@ void loongson3_ipi_interrupt(struct pt_regs *regs) __wbflush(); /* Let others see the result ASAP */ } + if (action & SMP_CPU_BACKTRACE) { + irq_enter(); + arch_dump_stack(); + irq_exit(); + } + if (irqs) { int irq; while ((irq = ffs(irqs))) { -- 2.7.0

5 years, 10 months

3
4
0 0

[Linux-stable-mirror] [PATCH 1/2] bdi: make sure congestion states are clear on free

by Tejun Heo

FUSE has a bug where it fails to clear congestion states if a connection gets aborted while congested, which can leave nr_wb_congested[] stuck until reboot causing wait_iff_congested() to wait spuriously. While the bdi owner, FUSE, is primarily responsible for clearing congestion states before destroying bdi_writebacks, bdi layer can ensure that congestion states are not leaked beyond bdi_writeback lifecycle. Signed-off-by: Tejun Heo <tj(a)kernel.org> Reported-by: Joshua Miller <joshmiller(a)fb.com> Cc: Johannes Weiner <hannes(a)cmpxchg.org> Cc: Jan Kara <jack(a)suse.cz> Cc: stable(a)vger.kernel.org --- include/linux/backing-dev.h | 14 +++++++++++++- mm/backing-dev.c | 2 +- 2 files changed, 14 insertions(+), 2 deletions(-) --- a/include/linux/backing-dev.h +++ b/include/linux/backing-dev.h @@ -220,6 +220,18 @@ static inline int bdi_sched_wait(void *w return 0; } +static inline void __wb_congested_free(struct bdi_writeback_congested *congested) +{ + /* + * Make sure congestion states are cleared before freeing to avoid + * nr_wb_congested() corruption which can lead to misbehaving + * wait_iff_congested(). + */ + clear_wb_congested(congested, BLK_RW_SYNC); + clear_wb_congested(congested, BLK_RW_ASYNC); + kfree(congested); +} + #ifdef CONFIG_CGROUP_WRITEBACK struct bdi_writeback_congested * @@ -409,7 +421,7 @@ wb_congested_get_create(struct backing_d static inline void wb_congested_put(struct bdi_writeback_congested *congested) { if (atomic_dec_and_test(&congested->refcnt)) - kfree(congested); + __wb_congested_free(congested); } static inline struct bdi_writeback *wb_find_current(struct backing_dev_info *bdi) --- a/mm/backing-dev.c +++ b/mm/backing-dev.c @@ -509,7 +509,7 @@ void wb_congested_put(struct bdi_writeba } spin_unlock_irqrestore(&cgwb_lock, flags); - kfree(congested); + __wb_congested_free(congested); } static void cgwb_release_workfn(struct work_struct *work)

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Linux-stable-mirror February 2018