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FAILED: patch "[PATCH] mm: fix apply_to_existing_page_range()" failed to apply to 5.15-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.15-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.15.y git checkout FETCH_HEAD git cherry-pick -x a995199384347261bb3f21b2e171fa7f988bd2f8 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025042115-penholder-famished-11cb@gregkh' --subject-prefix 'PATCH 5.15.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From a995199384347261bb3f21b2e171fa7f988bd2f8 Mon Sep 17 00:00:00 2001 From: "Kirill A. Shutemov" <kirill.shutemov(a)linux.intel.com> Date: Wed, 9 Apr 2025 12:40:43 +0300 Subject: [PATCH] mm: fix apply_to_existing_page_range() In the case of apply_to_existing_page_range(), apply_to_pte_range() is reached with 'create' set to false. When !create, the loop over the PTE page table is broken. apply_to_pte_range() will only move to the next PTE entry if 'create' is true or if the current entry is not pte_none(). This means that the user of apply_to_existing_page_range() will not have 'fn' called for any entries after the first pte_none() in the PTE page table. Fix the loop logic in apply_to_pte_range(). There are no known runtime issues from this, but the fix is trivial enough for stable@ even without a known buggy user. Link: https://lkml.kernel.org/r/20250409094043.1629234-1-kirill.shutemov@linux.in… Signed-off-by: Kirill A. Shutemov <kirill.shutemov(a)linux.intel.com> Fixes: be1db4753ee6 ("mm/memory.c: add apply_to_existing_page_range() helper") Cc: Daniel Axtens <dja(a)axtens.net> Cc: David Hildenbrand <david(a)redhat.com> Cc: Vlastimil Babka <vbabka(a)suse.cz> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> diff --git a/mm/memory.c b/mm/memory.c index 1a35165622e1..44481fe7c629 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -2938,11 +2938,11 @@ static int apply_to_pte_range(struct mm_struct *mm, pmd_t *pmd, if (fn) { do { if (create || !pte_none(ptep_get(pte))) { - err = fn(pte++, addr, data); + err = fn(pte, addr, data); if (err) break; } - } while (addr += PAGE_SIZE, addr != end); + } while (pte++, addr += PAGE_SIZE, addr != end); } *mask |= PGTBL_PTE_MODIFIED;

3 days, 12 hours

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[PATCH 5.15.y] drm/amdgpu: fix usage slab after free

by bin.lan.cn＠windriver.com

From: Vitaly Prosyak <vitaly.prosyak(a)amd.com> [ Upstream commit b61badd20b443eabe132314669bb51a263982e5c ] [ +0.000021] BUG: KASAN: slab-use-after-free in drm_sched_entity_flush+0x6cb/0x7a0 [gpu_sched] [ +0.000027] Read of size 8 at addr ffff8881b8605f88 by task amd_pci_unplug/2147 [ +0.000023] CPU: 6 PID: 2147 Comm: amd_pci_unplug Not tainted 6.10.0+ #1 [ +0.000016] Hardware name: ASUS System Product Name/ROG STRIX B550-F GAMING (WI-FI), BIOS 1401 12/03/2020 [ +0.000016] Call Trace: [ +0.000008] <TASK> [ +0.000009] dump_stack_lvl+0x76/0xa0 [ +0.000017] print_report+0xce/0x5f0 [ +0.000017] ? drm_sched_entity_flush+0x6cb/0x7a0 [gpu_sched] [ +0.000019] ? srso_return_thunk+0x5/0x5f [ +0.000015] ? kasan_complete_mode_report_info+0x72/0x200 [ +0.000016] ? drm_sched_entity_flush+0x6cb/0x7a0 [gpu_sched] [ +0.000019] kasan_report+0xbe/0x110 [ +0.000015] ? drm_sched_entity_flush+0x6cb/0x7a0 [gpu_sched] [ +0.000023] __asan_report_load8_noabort+0x14/0x30 [ +0.000014] drm_sched_entity_flush+0x6cb/0x7a0 [gpu_sched] [ +0.000020] ? srso_return_thunk+0x5/0x5f [ +0.000013] ? __kasan_check_write+0x14/0x30 [ +0.000016] ? __pfx_drm_sched_entity_flush+0x10/0x10 [gpu_sched] [ +0.000020] ? srso_return_thunk+0x5/0x5f [ +0.000013] ? __kasan_check_write+0x14/0x30 [ +0.000013] ? srso_return_thunk+0x5/0x5f [ +0.000013] ? enable_work+0x124/0x220 [ +0.000015] ? __pfx_enable_work+0x10/0x10 [ +0.000013] ? srso_return_thunk+0x5/0x5f [ +0.000014] ? free_large_kmalloc+0x85/0xf0 [ +0.000016] drm_sched_entity_destroy+0x18/0x30 [gpu_sched] [ +0.000020] amdgpu_vce_sw_fini+0x55/0x170 [amdgpu] [ +0.000735] ? __kasan_check_read+0x11/0x20 [ +0.000016] vce_v4_0_sw_fini+0x80/0x110 [amdgpu] [ +0.000726] amdgpu_device_fini_sw+0x331/0xfc0 [amdgpu] [ +0.000679] ? mutex_unlock+0x80/0xe0 [ +0.000017] ? __pfx_amdgpu_device_fini_sw+0x10/0x10 [amdgpu] [ +0.000662] ? srso_return_thunk+0x5/0x5f [ +0.000014] ? __kasan_check_write+0x14/0x30 [ +0.000013] ? srso_return_thunk+0x5/0x5f [ +0.000013] ? mutex_unlock+0x80/0xe0 [ +0.000016] amdgpu_driver_release_kms+0x16/0x80 [amdgpu] [ +0.000663] drm_minor_release+0xc9/0x140 [drm] [ +0.000081] drm_release+0x1fd/0x390 [drm] [ +0.000082] __fput+0x36c/0xad0 [ +0.000018] __fput_sync+0x3c/0x50 [ +0.000014] __x64_sys_close+0x7d/0xe0 [ +0.000014] x64_sys_call+0x1bc6/0x2680 [ +0.000014] do_syscall_64+0x70/0x130 [ +0.000014] ? srso_return_thunk+0x5/0x5f [ +0.000014] ? irqentry_exit_to_user_mode+0x60/0x190 [ +0.000015] ? srso_return_thunk+0x5/0x5f [ +0.000014] ? irqentry_exit+0x43/0x50 [ +0.000012] ? srso_return_thunk+0x5/0x5f [ +0.000013] ? exc_page_fault+0x7c/0x110 [ +0.000015] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ +0.000014] RIP: 0033:0x7ffff7b14f67 [ +0.000013] Code: ff e8 0d 16 02 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 41 c3 48 83 ec 18 89 7c 24 0c e8 73 ba f7 ff [ +0.000026] RSP: 002b:00007fffffffe378 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 [ +0.000019] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007ffff7b14f67 [ +0.000014] RDX: 0000000000000000 RSI: 00007ffff7f6f47a RDI: 0000000000000003 [ +0.000014] RBP: 00007fffffffe3a0 R08: 0000555555569890 R09: 0000000000000000 [ +0.000014] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffffffe5c8 [ +0.000013] R13: 00005555555552a9 R14: 0000555555557d48 R15: 00007ffff7ffd040 [ +0.000020] </TASK> [ +0.000016] Allocated by task 383 on cpu 7 at 26.880319s: [ +0.000014] kasan_save_stack+0x28/0x60 [ +0.000008] kasan_save_track+0x18/0x70 [ +0.000007] kasan_save_alloc_info+0x38/0x60 [ +0.000007] __kasan_kmalloc+0xc1/0xd0 [ +0.000007] kmalloc_trace_noprof+0x180/0x380 [ +0.000007] drm_sched_init+0x411/0xec0 [gpu_sched] [ +0.000012] amdgpu_device_init+0x695f/0xa610 [amdgpu] [ +0.000658] amdgpu_driver_load_kms+0x1a/0x120 [amdgpu] [ +0.000662] amdgpu_pci_probe+0x361/0xf30 [amdgpu] [ +0.000651] local_pci_probe+0xe7/0x1b0 [ +0.000009] pci_device_probe+0x248/0x890 [ +0.000008] really_probe+0x1fd/0x950 [ +0.000008] __driver_probe_device+0x307/0x410 [ +0.000007] driver_probe_device+0x4e/0x150 [ +0.000007] __driver_attach+0x223/0x510 [ +0.000006] bus_for_each_dev+0x102/0x1a0 [ +0.000007] driver_attach+0x3d/0x60 [ +0.000006] bus_add_driver+0x2ac/0x5f0 [ +0.000006] driver_register+0x13d/0x490 [ +0.000008] __pci_register_driver+0x1ee/0x2b0 [ +0.000007] llc_sap_close+0xb0/0x160 [llc] [ +0.000009] do_one_initcall+0x9c/0x3e0 [ +0.000008] do_init_module+0x241/0x760 [ +0.000008] load_module+0x51ac/0x6c30 [ +0.000006] __do_sys_init_module+0x234/0x270 [ +0.000007] __x64_sys_init_module+0x73/0xc0 [ +0.000006] x64_sys_call+0xe3/0x2680 [ +0.000006] do_syscall_64+0x70/0x130 [ +0.000007] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ +0.000015] Freed by task 2147 on cpu 6 at 160.507651s: [ +0.000013] kasan_save_stack+0x28/0x60 [ +0.000007] kasan_save_track+0x18/0x70 [ +0.000007] kasan_save_free_info+0x3b/0x60 [ +0.000007] poison_slab_object+0x115/0x1c0 [ +0.000007] __kasan_slab_free+0x34/0x60 [ +0.000007] kfree+0xfa/0x2f0 [ +0.000007] drm_sched_fini+0x19d/0x410 [gpu_sched] [ +0.000012] amdgpu_fence_driver_sw_fini+0xc4/0x2f0 [amdgpu] [ +0.000662] amdgpu_device_fini_sw+0x77/0xfc0 [amdgpu] [ +0.000653] amdgpu_driver_release_kms+0x16/0x80 [amdgpu] [ +0.000655] drm_minor_release+0xc9/0x140 [drm] [ +0.000071] drm_release+0x1fd/0x390 [drm] [ +0.000071] __fput+0x36c/0xad0 [ +0.000008] __fput_sync+0x3c/0x50 [ +0.000007] __x64_sys_close+0x7d/0xe0 [ +0.000007] x64_sys_call+0x1bc6/0x2680 [ +0.000007] do_syscall_64+0x70/0x130 [ +0.000007] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ +0.000014] The buggy address belongs to the object at ffff8881b8605f80 which belongs to the cache kmalloc-64 of size 64 [ +0.000020] The buggy address is located 8 bytes inside of freed 64-byte region [ffff8881b8605f80, ffff8881b8605fc0) [ +0.000028] The buggy address belongs to the physical page: [ +0.000011] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1b8605 [ +0.000008] anon flags: 0x17ffffc0000000(node=0|zone=2|lastcpupid=0x1fffff) [ +0.000007] page_type: 0xffffefff(slab) [ +0.000009] raw: 0017ffffc0000000 ffff8881000428c0 0000000000000000 dead000000000001 [ +0.000006] raw: 0000000000000000 0000000000200020 00000001ffffefff 0000000000000000 [ +0.000006] page dumped because: kasan: bad access detected [ +0.000012] Memory state around the buggy address: [ +0.000011] ffff8881b8605e80: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ +0.000015] ffff8881b8605f00: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ +0.000015] >ffff8881b8605f80: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ +0.000013] ^ [ +0.000011] ffff8881b8606000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc [ +0.000014] ffff8881b8606080: fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb [ +0.000013] ================================================================== The issue reproduced on VG20 during the IGT pci_unplug test. The root cause of the issue is that the function drm_sched_fini is called before drm_sched_entity_kill. In drm_sched_fini, the drm_sched_rq structure is freed, but this structure is later accessed by each entity within the run queue, leading to invalid memory access. To resolve this, the order of cleanup calls is updated: Before: amdgpu_fence_driver_sw_fini amdgpu_device_ip_fini After: amdgpu_device_ip_fini amdgpu_fence_driver_sw_fini This updated order ensures that all entities in the IPs are cleaned up first, followed by proper cleanup of the schedulers. Additional Investigation: During debugging, another issue was identified in the amdgpu_vce_sw_fini function. The vce.vcpu_bo buffer must be freed only as the final step in the cleanup process to prevent any premature access during earlier cleanup stages. v2: Using Christian suggestion call drm_sched_entity_destroy before drm_sched_fini. Cc: Christian König <christian.koenig(a)amd.com> Cc: Alex Deucher <alexander.deucher(a)amd.com> Signed-off-by: Vitaly Prosyak <vitaly.prosyak(a)amd.com> Reviewed-by: Christian König <christian.koenig(a)amd.com> Signed-off-by: Alex Deucher <alexander.deucher(a)amd.com> Cc: stable(a)vger.kernel.org [Minor context change fixed.] Signed-off-by: Bin Lan <bin.lan.cn(a)windriver.com> Signed-off-by: He Zhe <zhe.he(a)windriver.com> --- Build test passed. --- drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 2 +- drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c | 6 +++--- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index b11a98bee4f0..6ed4b1ffa4c9 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -4008,8 +4008,8 @@ void amdgpu_device_fini_hw(struct amdgpu_device *adev) void amdgpu_device_fini_sw(struct amdgpu_device *adev) { - amdgpu_fence_driver_sw_fini(adev); amdgpu_device_ip_fini(adev); + amdgpu_fence_driver_sw_fini(adev); release_firmware(adev->firmware.gpu_info_fw); adev->firmware.gpu_info_fw = NULL; adev->accel_working = false; diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c index 9f7450a8d004..6d1516c357f5 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vce.c @@ -220,15 +220,15 @@ int amdgpu_vce_sw_fini(struct amdgpu_device *adev) drm_sched_entity_destroy(&adev->vce.entity); - amdgpu_bo_free_kernel(&adev->vce.vcpu_bo, &adev->vce.gpu_addr, - (void **)&adev->vce.cpu_addr); - for (i = 0; i < adev->vce.num_rings; i++) amdgpu_ring_fini(&adev->vce.ring[i]); release_firmware(adev->vce.fw); mutex_destroy(&adev->vce.idle_mutex); + amdgpu_bo_free_kernel(&adev->vce.vcpu_bo, &adev->vce.gpu_addr, + (void **)&adev->vce.cpu_addr); + return 0; } -- 2.34.1

3 days, 12 hours

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FAILED: patch "[PATCH] mm: fix apply_to_existing_page_range()" failed to apply to 5.10-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.10-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.10.y git checkout FETCH_HEAD git cherry-pick -x a995199384347261bb3f21b2e171fa7f988bd2f8 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025042115-clock-repressed-cf8e@gregkh' --subject-prefix 'PATCH 5.10.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From a995199384347261bb3f21b2e171fa7f988bd2f8 Mon Sep 17 00:00:00 2001 From: "Kirill A. Shutemov" <kirill.shutemov(a)linux.intel.com> Date: Wed, 9 Apr 2025 12:40:43 +0300 Subject: [PATCH] mm: fix apply_to_existing_page_range() In the case of apply_to_existing_page_range(), apply_to_pte_range() is reached with 'create' set to false. When !create, the loop over the PTE page table is broken. apply_to_pte_range() will only move to the next PTE entry if 'create' is true or if the current entry is not pte_none(). This means that the user of apply_to_existing_page_range() will not have 'fn' called for any entries after the first pte_none() in the PTE page table. Fix the loop logic in apply_to_pte_range(). There are no known runtime issues from this, but the fix is trivial enough for stable@ even without a known buggy user. Link: https://lkml.kernel.org/r/20250409094043.1629234-1-kirill.shutemov@linux.in… Signed-off-by: Kirill A. Shutemov <kirill.shutemov(a)linux.intel.com> Fixes: be1db4753ee6 ("mm/memory.c: add apply_to_existing_page_range() helper") Cc: Daniel Axtens <dja(a)axtens.net> Cc: David Hildenbrand <david(a)redhat.com> Cc: Vlastimil Babka <vbabka(a)suse.cz> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> diff --git a/mm/memory.c b/mm/memory.c index 1a35165622e1..44481fe7c629 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -2938,11 +2938,11 @@ static int apply_to_pte_range(struct mm_struct *mm, pmd_t *pmd, if (fn) { do { if (create || !pte_none(ptep_get(pte))) { - err = fn(pte++, addr, data); + err = fn(pte, addr, data); if (err) break; } - } while (addr += PAGE_SIZE, addr != end); + } while (pte++, addr += PAGE_SIZE, addr != end); } *mask |= PGTBL_PTE_MODIFIED;

3 days, 12 hours

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[REGRESSION] stable-rc/linux-6.1.y: (build) variable 'is_redirect' is used uninitialized whenever 'if' conditi...

by KernelCI bot

Hello, New build issue found on stable-rc/linux-6.1.y: --- variable 'is_redirect' is used uninitialized whenever 'if' condition is true [-Werror,-Wsometimes-uninitialized] in net/sched/act_mirred.o (net/sched/act_mirred.c) [logspec:kbuild,kbuild.compiler.error] --- - dashboard: https://d.kernelci.org/i/maestro:596e739df5636c4348e4b5c1e97cb3db2187b60e - giturl: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git - commit HEAD: 75ae2fb1c96adec2e5c35ad91b692a4e940c9edc Log excerpt: ===================================================== net/sched/act_mirred.c:265:6: error: variable 'is_redirect' is used uninitialized whenever 'if' condition is true [-Werror,-Wsometimes-uninitialized] 265 | if (unlikely(!(dev->flags & IFF_UP)) || !netif_carrier_ok(dev)) { | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ./include/linux/compiler.h:78:22: note: expanded from macro 'unlikely' 78 | # define unlikely(x) __builtin_expect(!!(x), 0) | ^ net/sched/act_mirred.c:331:6: note: uninitialized use occurs here 331 | if (is_redirect) | ^~~~~~~~~~~ net/sched/act_mirred.c:265:2: note: remove the 'if' if its condition is always false 265 | if (unlikely(!(dev->flags & IFF_UP)) || !netif_carrier_ok(dev)) { | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 266 | net_notice_ratelimited("tc mirred to Houston: device %s is down\n", | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 267 | dev->name); | ~~~~~~~~~~~ 268 | goto err_cant_do; | ~~~~~~~~~~~~~~~~~ 269 | } | ~ net/sched/act_mirred.c:265:6: error: variable 'is_redirect' is used uninitialized whenever '||' condition is true [-Werror,-Wsometimes-uninitialized] 265 | if (unlikely(!(dev->flags & IFF_UP)) || !netif_carrier_ok(dev)) { | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ./include/linux/compiler.h:78:22: note: expanded from macro 'unlikely' 78 | # define unlikely(x) __builtin_expect(!!(x), 0) | ^~~~~~~~~~~~~~~~~~~~~~~~~~ net/sched/act_mirred.c:331:6: note: uninitialized use occurs here 331 | if (is_redirect) | ^~~~~~~~~~~ net/sched/act_mirred.c:265:6: note: remove the '||' if its condition is always false 265 | if (unlikely(!(dev->flags & IFF_UP)) || !netif_carrier_ok(dev)) { | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ./include/linux/compiler.h:78:22: note: expanded from macro 'unlikely' 78 | # define unlikely(x) __builtin_expect(!!(x), 0) | ^ net/sched/act_mirred.c:260:6: error: variable 'is_redirect' is used uninitialized whenever 'if' condition is true [-Werror,-Wsometimes-uninitialized] 260 | if (unlikely(!dev)) { | ^~~~~~~~~~~~~~ ./include/linux/compiler.h:78:22: note: expanded from macro 'unlikely' 78 | # define unlikely(x) __builtin_expect(!!(x), 0) | ^~~~~~~~~~~~~~~~~~~~~~~~~~ net/sched/act_mirred.c:331:6: note: uninitialized use occurs here 331 | if (is_redirect) | ^~~~~~~~~~~ net/sched/act_mirred.c:260:2: note: remove the 'if' if its condition is always false 260 | if (unlikely(!dev)) { | ^~~~~~~~~~~~~~~~~~~~~ 261 | pr_notice_once("tc mirred: target device is gone\n"); | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 262 | goto err_cant_do; | ~~~~~~~~~~~~~~~~~ 263 | } | ~ net/sched/act_mirred.c:238:18: note: initialize the variable 'is_redirect' to silence this warning 238 | bool is_redirect; | ^ | = 0 3 errors generated. ===================================================== # Builds where the incident occurred: ## defconfig+allmodconfig on (arm64): - compiler: clang-17 - dashboard: https://d.kernelci.org/build/maestro:6807ae9243948caad94dcfbb ## defconfig+allmodconfig+CONFIG_FRAME_WARN=2048 on (arm): - compiler: clang-17 - dashboard: https://d.kernelci.org/build/maestro:6807ae8e43948caad94dcfb8 ## i386_defconfig+allmodconfig+CONFIG_FRAME_WARN=2048 on (i386): - compiler: clang-17 - dashboard: https://d.kernelci.org/build/maestro:6807aed943948caad94dcfee #kernelci issue maestro:596e739df5636c4348e4b5c1e97cb3db2187b60e Reported-by: kernelci.org bot <bot(a)kernelci.org> -- This is an experimental report format. Please send feedback in! Talk to us at kernelci(a)lists.linux.dev Made with love by the KernelCI team - https://kernelci.org

3 days, 13 hours

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[REGRESSION] stable-rc/linux-5.10.y: (build) use of undeclared identifier 'SDHCI_CLOCK_BASE_SHIFT' in drivers/m...

by KernelCI bot

Hello, New build issue found on stable-rc/linux-5.10.y: --- use of undeclared identifier 'SDHCI_CLOCK_BASE_SHIFT' in drivers/mmc/host/sdhci-brcmstb.o (drivers/mmc/host/sdhci-brcmstb.c) [logspec:kbuild,kbuild.compiler.error] --- - dashboard: https://d.kernelci.org/i/maestro:1bbba9215f3aa3d5c2158789a2b0557774ea7ac1 - giturl: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git - commit HEAD: 09fe25955000ce514339e542e9a99a4159a45021 Log excerpt: ===================================================== drivers/mmc/host/sdhci-brcmstb.c:358:37: error: use of undeclared identifier 'SDHCI_CLOCK_BASE_SHIFT' 358 | host->caps |= (actual_clock_mhz << SDHCI_CLOCK_BASE_SHIFT); | ^ 1 error generated. ===================================================== # Builds where the incident occurred: ## defconfig+allmodconfig on (arm64): - compiler: clang-17 - dashboard: https://d.kernelci.org/build/maestro:6807ad7343948caad94dced6 ## defconfig+allmodconfig+CONFIG_FRAME_WARN=2048 on (arm): - compiler: clang-17 - dashboard: https://d.kernelci.org/build/maestro:6807ad6f43948caad94dced3 ## defconfig+arm64-chromebook+kselftest on (arm64): - compiler: clang-17 - dashboard: https://d.kernelci.org/build/maestro:6807ad7643948caad94dced9 #kernelci issue maestro:1bbba9215f3aa3d5c2158789a2b0557774ea7ac1 Reported-by: kernelci.org bot <bot(a)kernelci.org> -- This is an experimental report format. Please send feedback in! Talk to us at kernelci(a)lists.linux.dev Made with love by the KernelCI team - https://kernelci.org

3 days, 14 hours

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[PATCH] drm/amd/display: Fix slab-use-after-free in hdcp

by Mario Limonciello

From: Chris Bainbridge <chris.bainbridge(a)gmail.com> The HDCP code in amdgpu_dm_hdcp.c copies pointers to amdgpu_dm_connector objects without incrementing the kref reference counts. When using a USB-C dock, and the dock is unplugged, the corresponding amdgpu_dm_connector objects are freed, creating dangling pointers in the HDCP code. When the dock is plugged back, the dangling pointers are dereferenced, resulting in a slab-use-after-free: [ 66.775837] BUG: KASAN: slab-use-after-free in event_property_validate+0x42f/0x6c0 [amdgpu] [ 66.776171] Read of size 4 at addr ffff888127804120 by task kworker/0:1/10 [ 66.776179] CPU: 0 UID: 0 PID: 10 Comm: kworker/0:1 Not tainted 6.14.0-rc7-00180-g54505f727a38-dirty #233 [ 66.776183] Hardware name: HP HP Pavilion Aero Laptop 13-be0xxx/8916, BIOS F.17 12/18/2024 [ 66.776186] Workqueue: events event_property_validate [amdgpu] [ 66.776494] Call Trace: [ 66.776496] <TASK> [ 66.776497] dump_stack_lvl+0x70/0xa0 [ 66.776504] print_report+0x175/0x555 [ 66.776507] ? __virt_addr_valid+0x243/0x450 [ 66.776510] ? kasan_complete_mode_report_info+0x66/0x1c0 [ 66.776515] kasan_report+0xeb/0x1c0 [ 66.776518] ? event_property_validate+0x42f/0x6c0 [amdgpu] [ 66.776819] ? event_property_validate+0x42f/0x6c0 [amdgpu] [ 66.777121] __asan_report_load4_noabort+0x14/0x20 [ 66.777124] event_property_validate+0x42f/0x6c0 [amdgpu] [ 66.777342] ? __lock_acquire+0x6b40/0x6b40 [ 66.777347] ? enable_assr+0x250/0x250 [amdgpu] [ 66.777571] process_one_work+0x86b/0x1510 [ 66.777575] ? pwq_dec_nr_in_flight+0xcf0/0xcf0 [ 66.777578] ? assign_work+0x16b/0x280 [ 66.777580] ? lock_is_held_type+0xa3/0x130 [ 66.777583] worker_thread+0x5c0/0xfa0 [ 66.777587] ? process_one_work+0x1510/0x1510 [ 66.777588] kthread+0x3a2/0x840 [ 66.777591] ? kthread_is_per_cpu+0xd0/0xd0 [ 66.777594] ? trace_hardirqs_on+0x4f/0x60 [ 66.777597] ? _raw_spin_unlock_irq+0x27/0x60 [ 66.777599] ? calculate_sigpending+0x77/0xa0 [ 66.777602] ? kthread_is_per_cpu+0xd0/0xd0 [ 66.777605] ret_from_fork+0x40/0x90 [ 66.777607] ? kthread_is_per_cpu+0xd0/0xd0 [ 66.777609] ret_from_fork_asm+0x11/0x20 [ 66.777614] </TASK> [ 66.777643] Allocated by task 10: [ 66.777646] kasan_save_stack+0x39/0x60 [ 66.777649] kasan_save_track+0x14/0x40 [ 66.777652] kasan_save_alloc_info+0x37/0x50 [ 66.777655] __kasan_kmalloc+0xbb/0xc0 [ 66.777658] __kmalloc_cache_noprof+0x1c8/0x4b0 [ 66.777661] dm_dp_add_mst_connector+0xdd/0x5c0 [amdgpu] [ 66.777880] drm_dp_mst_port_add_connector+0x47e/0x770 [drm_display_helper] [ 66.777892] drm_dp_send_link_address+0x1554/0x2bf0 [drm_display_helper] [ 66.777901] drm_dp_check_and_send_link_address+0x187/0x1f0 [drm_display_helper] [ 66.777909] drm_dp_mst_link_probe_work+0x2b8/0x410 [drm_display_helper] [ 66.777917] process_one_work+0x86b/0x1510 [ 66.777919] worker_thread+0x5c0/0xfa0 [ 66.777922] kthread+0x3a2/0x840 [ 66.777925] ret_from_fork+0x40/0x90 [ 66.777927] ret_from_fork_asm+0x11/0x20 [ 66.777932] Freed by task 1713: [ 66.777935] kasan_save_stack+0x39/0x60 [ 66.777938] kasan_save_track+0x14/0x40 [ 66.777940] kasan_save_free_info+0x3b/0x60 [ 66.777944] __kasan_slab_free+0x52/0x70 [ 66.777946] kfree+0x13f/0x4b0 [ 66.777949] dm_dp_mst_connector_destroy+0xfa/0x150 [amdgpu] [ 66.778179] drm_connector_free+0x7d/0xb0 [ 66.778184] drm_mode_object_put.part.0+0xee/0x160 [ 66.778188] drm_mode_object_put+0x37/0x50 [ 66.778191] drm_atomic_state_default_clear+0x220/0xd60 [ 66.778194] __drm_atomic_state_free+0x16e/0x2a0 [ 66.778197] drm_mode_atomic_ioctl+0x15ed/0x2ba0 [ 66.778200] drm_ioctl_kernel+0x17a/0x310 [ 66.778203] drm_ioctl+0x584/0xd10 [ 66.778206] amdgpu_drm_ioctl+0xd2/0x1c0 [amdgpu] [ 66.778375] __x64_sys_ioctl+0x139/0x1a0 [ 66.778378] x64_sys_call+0xee7/0xfb0 [ 66.778381] do_syscall_64+0x87/0x140 [ 66.778385] entry_SYSCALL_64_after_hwframe+0x4b/0x53 Fix this by properly incrementing and decrementing the reference counts when making and deleting copies of the amdgpu_dm_connector pointers. Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/4006 Signed-off-by: Chris Bainbridge <chris.bainbridge(a)gmail.com> Cc: <Stable(a)vger.kernel.org> Fixes: da3fd7ac0bcf3 ("drm/amd/display: Update CP property based on HW query") (Mario: rebase on current code and update fixes tag) Signed-off-by: Mario Limonciello <mario.limonciello(a)amd.com> --- .../amd/display/amdgpu_dm/amdgpu_dm_hdcp.c | 19 ++++++++++++++++--- 1 file changed, 16 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c index 2bd8dee1b7c2..26922d870b89 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c @@ -202,6 +202,9 @@ void hdcp_update_display(struct hdcp_workqueue *hdcp_work, unsigned int conn_index = aconnector->base.index; guard(mutex)(&hdcp_w->mutex); + drm_connector_get(&aconnector->base); + if (hdcp_w->aconnector[conn_index]) + drm_connector_put(&hdcp_w->aconnector[conn_index]->base); hdcp_w->aconnector[conn_index] = aconnector; memset(&link_adjust, 0, sizeof(link_adjust)); @@ -249,7 +252,6 @@ static void hdcp_remove_display(struct hdcp_workqueue *hdcp_work, unsigned int conn_index = aconnector->base.index; guard(mutex)(&hdcp_w->mutex); - hdcp_w->aconnector[conn_index] = aconnector; /* the removal of display will invoke auth reset -> hdcp destroy and * we'd expect the Content Protection (CP) property changed back to @@ -265,7 +267,10 @@ static void hdcp_remove_display(struct hdcp_workqueue *hdcp_work, } mod_hdcp_remove_display(&hdcp_w->hdcp, aconnector->base.index, &hdcp_w->output); - + if (hdcp_w->aconnector[conn_index]) { + drm_connector_put(&hdcp_w->aconnector[conn_index]->base); + hdcp_w->aconnector[conn_index] = NULL; + } process_output(hdcp_w); } @@ -283,6 +288,10 @@ void hdcp_reset_display(struct hdcp_workqueue *hdcp_work, unsigned int link_inde for (conn_index = 0; conn_index < AMDGPU_DM_MAX_DISPLAY_INDEX; conn_index++) { hdcp_w->encryption_status[conn_index] = MOD_HDCP_ENCRYPTION_STATUS_HDCP_OFF; + if (hdcp_w->aconnector[conn_index]) { + drm_connector_put(&hdcp_w->aconnector[conn_index]->base); + hdcp_w->aconnector[conn_index] = NULL; + } } process_output(hdcp_w); @@ -517,6 +526,7 @@ static void update_config(void *handle, struct cp_psp_stream_config *config) struct hdcp_workqueue *hdcp_work = handle; struct amdgpu_dm_connector *aconnector = config->dm_stream_ctx; int link_index = aconnector->dc_link->link_index; + unsigned int conn_index = aconnector->base.index; struct mod_hdcp_display *display = &hdcp_work[link_index].display; struct mod_hdcp_link *link = &hdcp_work[link_index].link; struct hdcp_workqueue *hdcp_w = &hdcp_work[link_index]; @@ -573,7 +583,10 @@ static void update_config(void *handle, struct cp_psp_stream_config *config) guard(mutex)(&hdcp_w->mutex); mod_hdcp_add_display(&hdcp_w->hdcp, link, display, &hdcp_w->output); - + drm_connector_get(&aconnector->base); + if (hdcp_w->aconnector[conn_index]) + drm_connector_put(&hdcp_w->aconnector[conn_index]->base); + hdcp_w->aconnector[conn_index] = aconnector; process_output(hdcp_w); } -- 2.49.0

3 days, 15 hours

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[REGRESSION] stable-rc/linux-5.10.y: (build) ‘SDHCI_CLOCK_BASE_SHIFT’ undeclared (first use in this function); ...

by KernelCI bot

Hello, New build issue found on stable-rc/linux-5.10.y: --- ‘SDHCI_CLOCK_BASE_SHIFT’ undeclared (first use in this function); did you mean ‘SDHCI_CLOCK_BASE_MASK’? in drivers/mmc/host/sdhci-brcmstb.o (drivers/mmc/host/sdhci-brcmstb.c) [logspec:kbuild,kbuild.compiler.error] --- - dashboard: https://d.kernelci.org/i/maestro:3d78010dfd35842399e06140837eff2c84b56458 - giturl: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git - commit HEAD: 09fe25955000ce514339e542e9a99a4159a45021 Log excerpt: ===================================================== drivers/mmc/host/sdhci-brcmstb.c:358:44: error: ‘SDHCI_CLOCK_BASE_SHIFT’ undeclared (first use in this function); did you mean ‘SDHCI_CLOCK_BASE_MASK’? 358 | host->caps |= (actual_clock_mhz << SDHCI_CLOCK_BASE_SHIFT); | ^~~~~~~~~~~~~~~~~~~~~~ | SDHCI_CLOCK_BASE_MASK drivers/mmc/host/sdhci-brcmstb.c:358:44: note: each undeclared identifier is reported only once for each function it appears in AR drivers/iio/humidity/built-in.a ===================================================== # Builds where the incident occurred: ## defconfig+arm64-chromebook+kcidebug+lab-setup on (arm64): - compiler: gcc-12 - dashboard: https://d.kernelci.org/build/maestro:6807ada943948caad94dcf07 ## defconfig+lab-setup+arm64-chromebook+CONFIG_MODULE_COMPRESS=n+CONFIG_MODULE_COMPRESS_NONE=y on (arm64): - compiler: gcc-12 - dashboard: https://d.kernelci.org/build/maestro:6807ad6043948caad94dcec7 ## defconfig+lab-setup+kselftest on (arm64): - compiler: gcc-12 - dashboard: https://d.kernelci.org/build/maestro:6807ada543948caad94dcf04 ## multi_v7_defconfig on (arm): - compiler: gcc-12 - dashboard: https://d.kernelci.org/build/maestro:6807ad9a43948caad94dcefb #kernelci issue maestro:3d78010dfd35842399e06140837eff2c84b56458 Reported-by: kernelci.org bot <bot(a)kernelci.org> -- This is an experimental report format. Please send feedback in! Talk to us at kernelci(a)lists.linux.dev Made with love by the KernelCI team - https://kernelci.org

3 days, 15 hours

1
0
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[REGRESSION] stable-rc/linux-6.12.y: (build) ./include/linux/blkdev.h:1668:24: error: field ‘req_list’ has inco...

by KernelCI bot

Hello, New build issue found on stable-rc/linux-6.12.y: --- ./include/linux/blkdev.h:1668:24: error: field ‘req_list’ has incomplete type in init/main.o (init/main.c) [logspec:kbuild,kbuild.compiler.error] --- - dashboard: https://d.kernelci.org/i/maestro:cd168bc9c0a1dd7790c10e1a2ad1b0bac8ae366a - giturl: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git - commit HEAD: 98d0e5b8e62e87e5cdc3c131d5c8660e17e487a1 Log excerpt: ===================================================== In file included from init/main.c:85: ./include/linux/blkdev.h:1668:24: error: field ‘req_list’ has incomplete type 1668 | struct rq_list req_list; | ^~~~~~~~ AR drivers/clk/imx/built-in.a AR drivers/clk/ingenic/built-in.a ===================================================== # Builds where the incident occurred: ## tinyconfig on (i386): - compiler: gcc-12 - dashboard: https://d.kernelci.org/build/maestro:6807b01843948caad94dd153 ## tinyconfig+kselftest on (x86_64): - compiler: gcc-12 - dashboard: https://d.kernelci.org/build/maestro:6807b04243948caad94dd172 #kernelci issue maestro:cd168bc9c0a1dd7790c10e1a2ad1b0bac8ae366a Reported-by: kernelci.org bot <bot(a)kernelci.org> -- This is an experimental report format. Please send feedback in! Talk to us at kernelci(a)lists.linux.dev Made with love by the KernelCI team - https://kernelci.org

3 days, 15 hours

1
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Please apply commit d81cadbe1642 to 6.12 stable tree

by Naveen N Rao

Please apply commit d81cadbe1642 ("KVM: SVM: Disable AVIC on SNP-enabled system without HvInUseWrAllowed feature") to the stable v6.12 tree. This patch prevents a kernel BUG by disabling AVIC on systems without suitable support for AVIC to work when SEV-SNP support is enabled in the host. Thanks, Naveen

3 days, 15 hours

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[PATCH 6.12.y v3] wifi: ath12k: Fix invalid entry fetch in ath12k_dp_mon_srng_process

by Alexander Tsoy

From: P Praneesh <quic_ppranees(a)quicinc.com> [ Upstream commit 63fdc4509bcf483e79548de6bc08bf3c8e504bb3 ] Currently, ath12k_dp_mon_srng_process uses ath12k_hal_srng_src_get_next_entry to fetch the next entry from the destination ring. This is incorrect because ath12k_hal_srng_src_get_next_entry is intended for source rings, not destination rings. This leads to invalid entry fetches, causing potential data corruption or crashes due to accessing incorrect memory locations. This happens because the source ring and destination ring have different handling mechanisms and using the wrong function results in incorrect pointer arithmetic and ring management. To fix this issue, replace the call to ath12k_hal_srng_src_get_next_entry with ath12k_hal_srng_dst_get_next_entry in ath12k_dp_mon_srng_process. This ensures that the correct function is used for fetching entries from the destination ring, preventing invalid memory accesses. Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.3.1-00173-QCAHKSWPL_SILICONZ-1 Tested-on: WCN7850 hw2.0 WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3 Signed-off-by: P Praneesh <quic_ppranees(a)quicinc.com> Link: https://patch.msgid.link/20241223060132.3506372-7-quic_ppranees@quicinc.com Signed-off-by: Jeff Johnson <jeff.johnson(a)oss.qualcomm.com> Signed-off-by: Alexander Tsoy <alexander(a)tsoy.me> --- drivers/net/wireless/ath/ath12k/dp_mon.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/wireless/ath/ath12k/dp_mon.c b/drivers/net/wireless/ath/ath12k/dp_mon.c index 5c6749bc4039..4c98b9de1e58 100644 --- a/drivers/net/wireless/ath/ath12k/dp_mon.c +++ b/drivers/net/wireless/ath/ath12k/dp_mon.c @@ -2118,7 +2118,7 @@ int ath12k_dp_mon_srng_process(struct ath12k *ar, int mac_id, int *budget, dest_idx = 0; move_next: ath12k_dp_mon_buf_replenish(ab, buf_ring, 1); - ath12k_hal_srng_src_get_next_entry(ab, srng); + ath12k_hal_srng_dst_get_next_entry(ab, srng); num_buffs_reaped++; } -- 2.49.0

3 days, 17 hours

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