June 2025 - Linux-stable-mirror

[Patch v3 2/3] maple_tree: restart walk on correct status

by Wei Yang

Commit a8091f039c1e ("maple_tree: add MAS_UNDERFLOW and MAS_OVERFLOW states") adds more status during maple tree walk. But it introduce a typo on the status check during walk. It expects to mean neither active nor start, we would restart the walk, while current code means we would always restart the walk. Fixes: a8091f039c1e ("maple_tree: add MAS_UNDERFLOW and MAS_OVERFLOW states") Signed-off-by: Wei Yang <richard.weiyang(a)gmail.com> Cc: Liam R. Howlett <Liam.Howlett(a)Oracle.com> Cc: <stable(a)vger.kernel.org> Reviewed-by: Liam R. Howlett <Liam.Howlett(a)Oracle.com> --- lib/maple_tree.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/maple_tree.c b/lib/maple_tree.c index b0c345b6e646..7144dbbc3481 100644 --- a/lib/maple_tree.c +++ b/lib/maple_tree.c @@ -4930,7 +4930,7 @@ void *mas_walk(struct ma_state *mas) { void *entry; - if (!mas_is_active(mas) || !mas_is_start(mas)) + if (!mas_is_active(mas) && !mas_is_start(mas)) mas->status = ma_start; retry: entry = mas_state_walk(mas); -- 2.34.1

2 months, 2 weeks

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[Patch v3 1/3] maple_tree: Fix mt_destroy_walk() on root leaf node

by Wei Yang

On destroy, we should set each node dead. But current code miss this when the maple tree has only the root node. The reason is mt_destroy_walk() leverage mte_destroy_descend() to set node dead, but this is skipped since the only root node is a leaf. Fixes this by setting the node dead if it is a leaf. Fixes: 54a611b60590 ("Maple Tree: add new data structure") Signed-off-by: Wei Yang <richard.weiyang(a)gmail.com> Cc: Liam R. Howlett <Liam.Howlett(a)Oracle.com> Cc: <stable(a)vger.kernel.org> Reviewed-by: Liam R. Howlett <Liam.Howlett(a)Oracle.com> --- v2: * move the operation into mt_destroy_walk() * adjust the title accordingly --- lib/maple_tree.c | 1 + 1 file changed, 1 insertion(+) diff --git a/lib/maple_tree.c b/lib/maple_tree.c index affe979bd14d..b0c345b6e646 100644 --- a/lib/maple_tree.c +++ b/lib/maple_tree.c @@ -5319,6 +5319,7 @@ static void mt_destroy_walk(struct maple_enode *enode, struct maple_tree *mt, struct maple_enode *start; if (mte_is_leaf(enode)) { + mte_set_node_dead(enode); node->type = mte_node_type(enode); goto free_leaf; } -- 2.34.1

2 months, 2 weeks

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[tip: x86/urgent] x86/virt/tdx: Avoid indirect calls to TDX assembly functions

by tip-bot2 for Kai Huang

The following commit has been merged into the x86/urgent branch of tip: Commit-ID: 0b3bc018e86afdc0cbfef61328c63d5c08f8b370 Gitweb: https://git.kernel.org/tip/0b3bc018e86afdc0cbfef61328c63d5c08f8b370 Author: Kai Huang <kai.huang(a)intel.com> AuthorDate: Sat, 07 Jun 2025 01:07:37 +12:00 Committer: Dave Hansen <dave.hansen(a)linux.intel.com> CommitterDate: Tue, 10 Jun 2025 12:32:52 -07:00 x86/virt/tdx: Avoid indirect calls to TDX assembly functions Two 'static inline' TDX helper functions (sc_retry() and sc_retry_prerr()) take function pointer arguments which refer to assembly functions. Normally, the compiler inlines the TDX helper, realizes that the function pointer targets are completely static -- thus can be resolved at compile time -- and generates direct call instructions. But, other times (like when CONFIG_CC_OPTIMIZE_FOR_SIZE=y), the compiler declines to inline the helpers and will instead generate indirect call instructions. Indirect calls to assembly functions require special annotation (for various Control Flow Integrity mechanisms). But TDX assembly functions lack the special annotations and can only be called directly. Annotate both the helpers as '__always_inline' to prod the compiler into maintaining the direct calls. There is no guarantee here, but Peter has volunteered to report the compiler bug if this assumption ever breaks[1]. Fixes: 1e66a7e27539 ("x86/virt/tdx: Handle SEAMCALL no entropy error in common code") Fixes: df01f5ae07dd ("x86/virt/tdx: Add SEAMCALL error printing for module initialization") Signed-off-by: Kai Huang <kai.huang(a)intel.com> Signed-off-by: Dave Hansen <dave.hansen(a)linux.intel.com> Cc: stable(a)vger.kernel.org Link: https://lore.kernel.org/lkml/20250605145914.GW39944@noisy.programming.kicks… [1] Link: https://lore.kernel.org/all/20250606130737.30713-1-kai.huang%40intel.com --- arch/x86/include/asm/tdx.h | 2 +- arch/x86/virt/vmx/tdx/tdx.c | 5 +++-- 2 files changed, 4 insertions(+), 3 deletions(-) diff --git a/arch/x86/include/asm/tdx.h b/arch/x86/include/asm/tdx.h index 8b19294..7ddef3a 100644 --- a/arch/x86/include/asm/tdx.h +++ b/arch/x86/include/asm/tdx.h @@ -106,7 +106,7 @@ void tdx_init(void); typedef u64 (*sc_func_t)(u64 fn, struct tdx_module_args *args); -static inline u64 sc_retry(sc_func_t func, u64 fn, +static __always_inline u64 sc_retry(sc_func_t func, u64 fn, struct tdx_module_args *args) { int retry = RDRAND_RETRY_LOOPS; diff --git a/arch/x86/virt/vmx/tdx/tdx.c b/arch/x86/virt/vmx/tdx/tdx.c index 2457d13..c7a9a08 100644 --- a/arch/x86/virt/vmx/tdx/tdx.c +++ b/arch/x86/virt/vmx/tdx/tdx.c @@ -75,8 +75,9 @@ static inline void seamcall_err_ret(u64 fn, u64 err, args->r9, args->r10, args->r11); } -static inline int sc_retry_prerr(sc_func_t func, sc_err_func_t err_func, - u64 fn, struct tdx_module_args *args) +static __always_inline int sc_retry_prerr(sc_func_t func, + sc_err_func_t err_func, + u64 fn, struct tdx_module_args *args) { u64 sret = sc_retry(func, fn, args);

2 months, 2 weeks

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[REGRESSION][stable v6.14] AMD GPU init failure in v6.14.10 – revert needed for commit c53f23f7075c9f63f14d7ec8f2cc3e33e118d986

by msk

Hi all, #regzbot introduced: c53f23f7075c9f63f14d7ec8f2cc3e33e118d986 **Summary** A regression introduced in **v6.14.10** breaks AMD GPU initialization on RX 9070 XT system due to commit c53f23f7… (“drm/amd/display: check stream id dml21 wrapper…”). Reverting this commit restores proper graphical startup. dmesg output before revert [ 2.699091] ACPI: bus type drm_connector registered [ 2.699734] xhci_hcd 0000:02:00.0: xHCI Host Controller [ 2.699740] xhci_hcd 0000:02:00.0: new USB bus registered, assigned bus number 1 [ 2.755165] xhci_hcd 0000:02:00.0: hcc params 0x0200ef81 hci version 0x110 quirks 0x0000000000000010 [ 2.755445] xhci_hcd 0000:02:00.0: xHCI Host Controller [ 2.755448] xhci_hcd 0000:02:00.0: new USB bus registered, assigned bus number 2 [ 2.755450] xhci_hcd 0000:02:00.0: Host supports USB 3.1 Enhanced SuperSpeed [ 2.755511] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 6.14 [ 2.755512] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1 [ 2.755514] usb usb1: Product: xHCI Host Controller [ 2.755515] usb usb1: Manufacturer: Linux 6.14.10-x64v3-xanmod1 xhci-hcd [ 2.755517] usb usb1: SerialNumber: 0000:02:00.0 [ 2.755613] hub 1-0:1.0: USB hub found [ 2.755629] hub 1-0:1.0: 10 ports detected [ 2.755952] usb usb2: We don't know the algorithms for LPM for this host, disabling LPM. [ 2.755973] usb usb2: New USB device found, idVendor=1d6b, idProduct=0003, bcdDevice= 6.14 [ 2.755975] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1 [ 2.755976] usb usb2: Product: xHCI Host Controller [ 2.755978] usb usb2: Manufacturer: Linux 6.14.10-x64v3-xanmod1 xhci-hcd [ 2.755979] usb usb2: SerialNumber: 0000:02:00.0 [ 2.756056] hub 2-0:1.0: USB hub found [ 2.756065] hub 2-0:1.0: 4 ports detected [ 2.756274] xhci_hcd 0000:0a:00.3: xHCI Host Controller [ 2.756278] xhci_hcd 0000:0a:00.3: new USB bus registered, assigned bus number 3 [ 2.756384] xhci_hcd 0000:0a:00.3: hcc params 0x0278ffe5 hci version 0x110 quirks 0x0000000000000010 [ 2.756622] xhci_hcd 0000:0a:00.3: xHCI Host Controller [ 2.756624] xhci_hcd 0000:0a:00.3: new USB bus registered, assigned bus number 4 [ 2.756626] xhci_hcd 0000:0a:00.3: Host supports USB 3.1 Enhanced SuperSpeed [ 2.756657] usb usb3: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 6.14 [ 2.756659] usb usb3: New USB device strings: Mfr=3, Product=2, SerialNumber=1 [ 2.756660] usb usb3: Product: xHCI Host Controller [ 2.756661] usb usb3: Manufacturer: Linux 6.14.10-x64v3-xanmod1 xhci-hcd [ 2.756663] usb usb3: SerialNumber: 0000:0a:00.3 [ 2.756748] hub 3-0:1.0: USB hub found [ 2.756756] hub 3-0:1.0: 4 ports detected [ 2.756903] usb usb4: We don't know the algorithms for LPM for this host, disabling LPM. [ 2.756924] usb usb4: New USB device found, idVendor=1d6b, idProduct=0003, bcdDevice= 6.14 [ 2.756926] usb usb4: New USB device strings: Mfr=3, Product=2, SerialNumber=1 [ 2.756927] usb usb4: Product: xHCI Host Controller [ 2.756928] usb usb4: Manufacturer: Linux 6.14.10-x64v3-xanmod1 xhci-hcd [ 2.756929] usb usb4: SerialNumber: 0000:0a:00.3 [ 2.757008] hub 4-0:1.0: USB hub found [ 2.757015] hub 4-0:1.0: 4 ports detected [ 2.757180] usbcore: registered new interface driver usbserial_generic [ 2.757184] usbserial: USB Serial support registered for generic [ 2.757253] rtc_cmos 00:02: RTC can wake from S4 [ 2.757465] rtc_cmos 00:02: registered as rtc0 [ 2.757494] rtc_cmos 00:02: setting system clock to 2025-06-10T13:46:18 UTC (1749563178) [ 2.757517] rtc_cmos 00:02: alarms up to one month, y3k, 114 bytes nvram [ 2.793080] simple-framebuffer simple-framebuffer.0: [drm] Registered 1 planes with drm panic [ 2.793082] [drm] Initialized simpledrm 1.0.0 for simple-framebuffer.0 on minor 0 [ 2.796240] fbcon: Deferring console take-over [ 2.796241] simple-framebuffer simple-framebuffer.0: [drm] fb0: simpledrmdrmfb frame buffer device dmesg output after revert [ 2.634779] ata1: SATA max UDMA/133 abar m131072@0xfcc80000 port 0xfcc80100 irq 40 lpm-pol 0 [ 2.634782] ata2: SATA max UDMA/133 abar m131072@0xfcc80000 port 0xfcc80180 irq 40 lpm-pol 0 [ 2.634785] ata3: SATA max UDMA/133 abar m131072@0xfcc80000 port 0xfcc80200 irq 40 lpm-pol 0 [ 2.634787] ata4: SATA max UDMA/133 abar m131072@0xfcc80000 port 0xfcc80280 irq 40 lpm-pol 0 [ 2.634789] ata5: SATA max UDMA/133 abar m131072@0xfcc80000 port 0xfcc80300 irq 40 lpm-pol 0 [ 2.634791] ata6: SATA max UDMA/133 abar m131072@0xfcc80000 port 0xfcc80380 irq 40 lpm-pol 0 [ 2.634848] ACPI: bus type drm_connector registered [ 2.634869] [drm] amdgpu kernel modesetting enabled. [ 2.644006] amdgpu: Virtual CRAT table created for CPU [ 2.644017] amdgpu: Topology: Add CPU node [ 2.644089] amdgpu 0000:08:00.0: enabling device (0006 -> 0007) [ 2.644120] [drm] initializing kernel modesetting (IP DISCOVERY 0x1002:0x7550 0x1EAE:0x8811 0xC0). [ 2.644128] [drm] register mmio base: 0xFCD00000 [ 2.644129] [drm] register mmio size: 524288 [ 2.648358] amdgpu 0000:08:00.0: amdgpu: detected ip block number 0 <soc24_common> [ 2.648360] amdgpu 0000:08:00.0: amdgpu: detected ip block number 1 <gmc_v12_0> [ 2.648362] amdgpu 0000:08:00.0: amdgpu: detected ip block number 2 <ih_v7_0> [ 2.648364] amdgpu 0000:08:00.0: amdgpu: detected ip block number 3 <psp> [ 2.648365] amdgpu 0000:08:00.0: amdgpu: detected ip block number 4 <smu> [ 2.648366] amdgpu 0000:08:00.0: amdgpu: detected ip block number 5 <dm> [ 2.648368] amdgpu 0000:08:00.0: amdgpu: detected ip block number 6 <gfx_v12_0> [ 2.648369] amdgpu 0000:08:00.0: amdgpu: detected ip block number 7 <sdma_v7_0> [ 2.648370] amdgpu 0000:08:00.0: amdgpu: detected ip block number 8 <vcn_v5_0_0> [ 2.648372] amdgpu 0000:08:00.0: amdgpu: detected ip block number 9 <jpeg_v5_0_0> [ 2.648373] amdgpu 0000:08:00.0: amdgpu: detected ip block number 10 <mes_v12_0> [ 2.648383] amdgpu 0000:08:00.0: amdgpu: Fetched VBIOS from VFCT [ 2.648385] amdgpu: ATOM BIOS: 113-EXT108832-100 [ 2.659806] amdgpu 0000:08:00.0: vgaarb: deactivate vga console [ 2.659809] amdgpu 0000:08:00.0: amdgpu: Trusted Memory Zone (TMZ) feature not supported [ 2.659830] amdgpu 0000:08:00.0: amdgpu: MEM ECC is not presented. [ 2.659831] amdgpu 0000:08:00.0: amdgpu: SRAM ECC is not presented. [ 2.659845] [drm] vm size is 262144 GB, 4 levels, block size is 9-bit, fragment size is 9-bit [ 2.659850] amdgpu 0000:08:00.0: amdgpu: VRAM: 16304M 0x0000008000000000 - 0x00000083FAFFFFFF (16304M used) [ 2.659852] amdgpu 0000:08:00.0: amdgpu: GART: 512M 0x0000000000000000 - 0x000000001FFFFFFF [ 2.659856] [drm] Detected VRAM RAM=16304M, BAR=16384M [ 2.659858] [drm] RAM width 256bits GDDR6 [ 2.659915] [drm] amdgpu: 16304M of VRAM memory ready [ 2.659916] [drm] amdgpu: 15990M of GTT memory ready. [ 2.659926] [drm] GART: num cpu pages 131072, num gpu pages 131072 [ 2.659998] amdgpu 0000:08:00.0: amdgpu: PCIE GART of 512M enabled (table at 0x00000083DAB00000). [ 2.660416] [drm] Loading DMUB firmware via PSP: version=0x00010300 [ 2.660749] [drm] Found VCN firmware Version ENC: 1.7 DEC: 9 VEP: 0 Revision: 19 [ 2.895324] amdgpu 0000:08:00.0: amdgpu: RAP: optional rap ta ucode is not available [ 2.895327] amdgpu 0000:08:00.0: amdgpu: SECUREDISPLAY: securedisplay ta ucode is not available [ 2.895357] amdgpu 0000:08:00.0: amdgpu: smu driver if version = 0x0000002e, smu fw if version = 0x00000032, smu fw program = 0, smu fw version = 0x00684400 (104.68.0) [ 2.895360] amdgpu 0000:08:00.0: amdgpu: SMU driver if version not matched [ 2.934857] amdgpu 0000:08:00.0: amdgpu: SMU is initialized successfully! [ 2.935596] [drm] Display Core v3.2.316 initialized on DCN 4.0.1 [ 2.935598] [drm] DP-HDMI FRL PCON supported [ 2.939115] [drm] DMUB hardware initialized: version=0x00010300 [ 2.942565] ata1: SATA link down (SStatus 0 SControl 300) [ 3.233092] amdgpu 0000:08:00.0: amdgpu: program CP_MES_CNTL : 0x4000000 [ 3.233097] amdgpu 0000:08:00.0: amdgpu: program CP_MES_CNTL : 0xc000000 [ 3.293410] amdgpu: HMM registered 16304MB device memory [ 3.294762] kfd kfd: amdgpu: Allocated 3969056 bytes on gart [ 3.294771] kfd kfd: amdgpu: Total number of KFD nodes to be created: 1 [ 3.294806] amdgpu: Virtual CRAT table created for GPU [ 3.294972] amdgpu: Topology: Add dGPU node [0x7550:0x1002] [ 3.294974] kfd kfd: amdgpu: added device 1002:7550 [ 3.294983] amdgpu 0000:08:00.0: amdgpu: SE 4, SH per SE 2, CU per SH 8, active_cu_number 64 [ 3.294986] amdgpu 0000:08:00.0: amdgpu: ring gfx_0.0.0 uses VM inv eng 0 on hub 0 [ 3.294987] amdgpu 0000:08:00.0: amdgpu: ring comp_1.0.0 uses VM inv eng 1 on hub 0 [ 3.294989] amdgpu 0000:08:00.0: amdgpu: ring comp_1.1.0 uses VM inv eng 4 on hub 0 [ 3.294990] amdgpu 0000:08:00.0: amdgpu: ring comp_1.0.1 uses VM inv eng 6 on hub 0 [ 3.294991] amdgpu 0000:08:00.0: amdgpu: ring comp_1.1.1 uses VM inv eng 7 on hub 0 [ 3.294993] amdgpu 0000:08:00.0: amdgpu: ring sdma0 uses VM inv eng 8 on hub 0 [ 3.294994] amdgpu 0000:08:00.0: amdgpu: ring sdma1 uses VM inv eng 9 on hub 0 [ 3.294995] amdgpu 0000:08:00.0: amdgpu: ring vcn_unified_0 uses VM inv eng 0 on hub 8 [ 3.294997] amdgpu 0000:08:00.0: amdgpu: ring jpeg_dec uses VM inv eng 1 on hub 8 [ 3.296713] [drm] ring gfx_32768.1.1 was added [ 3.296874] [drm] ring compute_32768.2.2 was added [ 3.297032] [drm] ring sdma_32768.3.3 was added [ 3.297075] [drm] ring gfx_32768.1.1 ib test pass [ 3.297119] [drm] ring compute_32768.2.2 ib test pass [ 3.297157] [drm] ring sdma_32768.3.3 ib test pass [ 3.299782] amdgpu 0000:08:00.0: amdgpu: Using BACO for runtime pm [ 3.300156] amdgpu 0000:08:00.0: [drm] Registered 4 planes with drm panic [ 3.300158] [drm] Initialized amdgpu 3.61.0 for 0000:08:00.0 on minor 0 [ 3.328171] fbcon: amdgpudrmfb (fb0) is primary device [ 3.328173] fbcon: Deferring console take-over [ 3.328175] amdgpu 0000:08:00.0: [drm] fb0: amdgpudrmfb frame buffer device I am aware that this issue pertains to the XanMod kernel. However, upon reviewing the commits, there is no indication that it is a downstream issue. I attempted to confirm this regression by building the kernel from the Git repository, but my limited skills and knowledge proved insufficient. Please review this regression and consider reverting the commit from the stable 6.14 and 6.15 branches - or propose an alternate patch. Thanks & Regards, Marcin Kryzak

2 months, 2 weeks

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[PATCH] HID: lenovo: Restrict F7/9/11 mode to compact keyboards only

by Iusico Maxim

Commit 2f2bd7cbd1d1 ("hid: lenovo: Resend all settings on reset_resume for compact keyboards") introduced a regression for ThinkPad TrackPoint Keyboard II by removing the conditional check for enabling F7/9/11 mode needed for compact keyboards only. As a result, the non-compact keyboards can no longer toggle Fn-lock via Fn+Esc, although it can be controlled via sysfs knob that directly sends raw commands. This patch restores the previous conditional check without any additions. Cc: stable(a)vger.kernel.org Fixes: 2f2bd7cbd1d1 ("hid: lenovo: Resend all settings on reset_resume for compact keyboards") Signed-off-by: Iusico Maxim <iusico.maxim(a)libero.it> --- drivers/hid/hid-lenovo.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) diff --git a/drivers/hid/hid-lenovo.c b/drivers/hid/hid-lenovo.c index af29ba84052..a3c23a72316 100644 --- a/drivers/hid/hid-lenovo.c +++ b/drivers/hid/hid-lenovo.c @@ -548,11 +548,14 @@ static void lenovo_features_set_cptkbd(struct hid_device *hdev) /* * Tell the keyboard a driver understands it, and turn F7, F9, F11 into - * regular keys + * regular keys (Compact only) */ - ret = lenovo_send_cmd_cptkbd(hdev, 0x01, 0x03); - if (ret) - hid_warn(hdev, "Failed to switch F7/9/11 mode: %d\n", ret); + if (hdev->product == USB_DEVICE_ID_LENOVO_CUSBKBD || + hdev->product == USB_DEVICE_ID_LENOVO_CBTKBD) { + ret = lenovo_send_cmd_cptkbd(hdev, 0x01, 0x03); + if (ret) + hid_warn(hdev, "Failed to switch F7/9/11 mode: %d\n", ret); + } /* Switch middle button to native mode */ ret = lenovo_send_cmd_cptkbd(hdev, 0x09, 0x01); -- 2.48.1

2 months, 2 weeks

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[PATCH v2] tools/resolve_btfids: Fix build when cross compiling kernel with clang.

by Suleiman Souhlal

When cross compiling the kernel with clang, we need to override CLANG_CROSS_FLAGS when preparing the step libraries. Prior to commit d1d096312176 ("tools: fix annoying "mkdir -p ..." logs when building tools in parallel"), MAKEFLAGS would have been set to a value that wouldn't set a value for CLANG_CROSS_FLAGS, hiding the fact that we weren't properly overriding it. Cc: stable(a)vger.kernel.org Fixes: 56a2df7615fa ("tools/resolve_btfids: Compile resolve_btfids as host program") Signed-off-by: Suleiman Souhlal <suleiman(a)google.com> --- v2: - "Signed-off-by:" instead of "Signed-of-by". v1: https://lore.kernel.org/lkml/20250606052301.810338-1-suleiman@google.com/ --- tools/bpf/resolve_btfids/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/bpf/resolve_btfids/Makefile b/tools/bpf/resolve_btfids/Makefile index afbddea3a39c..ce1b556dfa90 100644 --- a/tools/bpf/resolve_btfids/Makefile +++ b/tools/bpf/resolve_btfids/Makefile @@ -17,7 +17,7 @@ endif # Overrides for the prepare step libraries. HOST_OVERRIDES := AR="$(HOSTAR)" CC="$(HOSTCC)" LD="$(HOSTLD)" ARCH="$(HOSTARCH)" \ - CROSS_COMPILE="" EXTRA_CFLAGS="$(HOSTCFLAGS)" + CROSS_COMPILE="" CLANG_CROSS_FLAGS="" EXTRA_CFLAGS="$(HOSTCFLAGS)" RM ?= rm HOSTCC ?= gcc -- 2.50.0.rc0.642.g800a2b2222-goog

2 months, 2 weeks

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Re: [PATCH net] netrom: fix possible deadlock in nr_rt_device_down

by Jakub Kicinski

On Mon, 9 Jun 2025 16:16:32 -0700 David Ranch wrote: > I'm not sure what you mean by "the only user of this code". There are > many people using the Linux AX.25 + NETROM stack but we unfortunately > don't have a active kernel maintainer for this code today. Alright, sorry. Either way - these locks are not performance critical for you, right?

2 months, 2 weeks

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WTS Available laptops and Memory

by Exceptional One PC

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2 months, 2 weeks

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[PATCH v4 01/10] platform/x86/intel/pmt: fix a crashlog NULL pointer access

by Michael J. Ruhl

Usage of the intel_pmt_read() for binary sysfs, requires a pcidev. The current use of the endpoint value is only valid for telemetry endpoint usage. Without the ep, the crashlog usage causes the following NULL pointer exception: BUG: kernel NULL pointer dereference, address: 0000000000000000 Oops: Oops: 0000 [#1] SMP NOPTI RIP: 0010:intel_pmt_read+0x3b/0x70 [pmt_class] Code: Call Trace: <TASK> ? sysfs_kf_bin_read+0xc0/0xe0 kernfs_fop_read_iter+0xac/0x1a0 vfs_read+0x26d/0x350 ksys_read+0x6b/0xe0 __x64_sys_read+0x1d/0x30 x64_sys_call+0x1bc8/0x1d70 do_syscall_64+0x6d/0x110 Augment the inte_pmt_entry to include the pcidev to allow for access to the pcidev and avoid the NULL pointer exception. Fixes: 416eeb2e1fc7 ("platform/x86/intel/pmt: telemetry: Export API to read telemetry") Cc: <stable(a)vger.kernel.org> Signed-off-by: Michael J. Ruhl <michael.j.ruhl(a)intel.com> --- drivers/platform/x86/intel/pmt/class.c | 3 ++- drivers/platform/x86/intel/pmt/class.h | 1 + 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/platform/x86/intel/pmt/class.c b/drivers/platform/x86/intel/pmt/class.c index 7233b654bbad..d046e8752173 100644 --- a/drivers/platform/x86/intel/pmt/class.c +++ b/drivers/platform/x86/intel/pmt/class.c @@ -97,7 +97,7 @@ intel_pmt_read(struct file *filp, struct kobject *kobj, if (count > entry->size - off) count = entry->size - off; - count = pmt_telem_read_mmio(entry->ep->pcidev, entry->cb, entry->header.guid, buf, + count = pmt_telem_read_mmio(entry->pcidev, entry->cb, entry->header.guid, buf, entry->base, off, count); return count; @@ -252,6 +252,7 @@ static int intel_pmt_populate_entry(struct intel_pmt_entry *entry, return -EINVAL; } + entry->pcidev = pci_dev; entry->guid = header->guid; entry->size = header->size; entry->cb = ivdev->priv_data; diff --git a/drivers/platform/x86/intel/pmt/class.h b/drivers/platform/x86/intel/pmt/class.h index b2006d57779d..f6ce80c4e051 100644 --- a/drivers/platform/x86/intel/pmt/class.h +++ b/drivers/platform/x86/intel/pmt/class.h @@ -39,6 +39,7 @@ struct intel_pmt_header { struct intel_pmt_entry { struct telem_endpoint *ep; + struct pci_dev *pcidev; struct intel_pmt_header header; struct bin_attribute pmt_bin_attr; struct kobject *kobj; -- 2.49.0

2 months, 2 weeks

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[PATCH] ASoC: sdw_utils: Fix potential NULL pointer deref in is_sdca_endpoint_present()

by Thorsten Blum

Check the return value of kzalloc() and exit early to avoid a potential NULL pointer dereference. Cc: stable(a)vger.kernel.org Fixes: 4f8ef33dd44a ("ASoC: soc_sdw_utils: skip the endpoint that doesn't present") Signed-off-by: Thorsten Blum <thorsten.blum(a)linux.dev> --- sound/soc/sdw_utils/soc_sdw_utils.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/sound/soc/sdw_utils/soc_sdw_utils.c b/sound/soc/sdw_utils/soc_sdw_utils.c index 30f84f4e7637..b70cb3793d8f 100644 --- a/sound/soc/sdw_utils/soc_sdw_utils.c +++ b/sound/soc/sdw_utils/soc_sdw_utils.c @@ -1180,6 +1180,8 @@ static int is_sdca_endpoint_present(struct device *dev, int i; dlc = kzalloc(sizeof(*dlc), GFP_KERNEL); + if (!dlc) + return -ENOMEM; adr_end = &adr_dev->endpoints[end_index]; dai_info = &codec_info->dais[adr_end->num]; -- 2.49.0

2 months, 2 weeks

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