Date
July 25, 2025, 3:13 a.m.
Environment | |
---|---|
qemu-arm64 | |
qemu-x86_64 |
[ 33.690148] ================================================================== [ 33.690226] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x174/0x300 [ 33.690301] Read of size 1 at addr fff00000c45173c0 by task kunit_try_catch/247 [ 33.690351] [ 33.690392] CPU: 0 UID: 0 PID: 247 Comm: kunit_try_catch Tainted: G B W N 6.16.0-rc7-next-20250725 #1 PREEMPT [ 33.690484] Tainted: [B]=BAD_PAGE, [W]=WARN, [N]=TEST [ 33.690516] Hardware name: linux,dummy-virt (DT) [ 33.690551] Call trace: [ 33.690578] show_stack+0x20/0x38 (C) [ 33.690630] dump_stack_lvl+0x8c/0xd0 [ 33.690696] print_report+0x118/0x5e8 [ 33.690740] kasan_report+0xdc/0x128 [ 33.690784] __kasan_check_byte+0x54/0x70 [ 33.690828] kmem_cache_destroy+0x34/0x218 [ 33.690878] kmem_cache_double_destroy+0x174/0x300 [ 33.690928] kunit_try_run_case+0x170/0x3f0 [ 33.690993] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 33.691045] kthread+0x328/0x630 [ 33.691088] ret_from_fork+0x10/0x20 [ 33.691150] [ 33.691170] Allocated by task 247: [ 33.691200] kasan_save_stack+0x3c/0x68 [ 33.691241] kasan_save_track+0x20/0x40 [ 33.691277] kasan_save_alloc_info+0x40/0x58 [ 33.691314] __kasan_slab_alloc+0xa8/0xb0 [ 33.691350] kmem_cache_alloc_noprof+0x10c/0x398 [ 33.691391] __kmem_cache_create_args+0x178/0x280 [ 33.691432] kmem_cache_double_destroy+0xc0/0x300 [ 33.691473] kunit_try_run_case+0x170/0x3f0 [ 33.691510] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 33.691553] kthread+0x328/0x630 [ 33.691585] ret_from_fork+0x10/0x20 [ 33.691621] [ 33.691653] Freed by task 247: [ 33.691680] kasan_save_stack+0x3c/0x68 [ 33.691716] kasan_save_track+0x20/0x40 [ 33.691749] kasan_save_free_info+0x4c/0x78 [ 33.691791] __kasan_slab_free+0x7c/0xa8 [ 33.691825] kmem_cache_free+0x260/0x468 [ 33.691864] slab_kmem_cache_release+0x38/0x50 [ 33.691902] kmem_cache_release+0x1c/0x30 [ 33.691940] kobject_put+0x17c/0x420 [ 33.691978] sysfs_slab_release+0x1c/0x30 [ 33.692014] kmem_cache_destroy+0x118/0x218 [ 33.692053] kmem_cache_double_destroy+0x128/0x300 [ 33.692092] kunit_try_run_case+0x170/0x3f0 [ 33.692129] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 33.692172] kthread+0x328/0x630 [ 33.692203] ret_from_fork+0x10/0x20 [ 33.692239] [ 33.692261] The buggy address belongs to the object at fff00000c45173c0 [ 33.692261] which belongs to the cache kmem_cache of size 208 [ 33.692317] The buggy address is located 0 bytes inside of [ 33.692317] freed 208-byte region [fff00000c45173c0, fff00000c4517490) [ 33.692377] [ 33.692400] The buggy address belongs to the physical page: [ 33.692443] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x104517 [ 33.692502] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 33.692553] page_type: f5(slab) [ 33.692595] raw: 0bfffe0000000000 fff00000c0001000 dead000000000122 0000000000000000 [ 33.692659] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 33.692705] page dumped because: kasan: bad access detected [ 33.692737] [ 33.692757] Memory state around the buggy address: [ 33.692793] fff00000c4517280: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 33.692837] fff00000c4517300: 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc [ 33.692881] >fff00000c4517380: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 33.692921] ^ [ 33.692955] fff00000c4517400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 33.692998] fff00000c4517480: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 33.693037] ==================================================================
[ 26.652924] ================================================================== [ 26.654191] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x1bf/0x380 [ 26.654475] Read of size 1 at addr ffff888106258140 by task kunit_try_catch/264 [ 26.654706] [ 26.654809] CPU: 1 UID: 0 PID: 264 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc7-next-20250725 #1 PREEMPT(voluntary) [ 26.654863] Tainted: [B]=BAD_PAGE, [N]=TEST [ 26.654876] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 26.654899] Call Trace: [ 26.654914] <TASK> [ 26.654934] dump_stack_lvl+0x73/0xb0 [ 26.654983] print_report+0xd1/0x640 [ 26.655007] ? __virt_addr_valid+0x1db/0x2d0 [ 26.655034] ? kmem_cache_double_destroy+0x1bf/0x380 [ 26.655058] ? kasan_complete_mode_report_info+0x64/0x200 [ 26.655086] ? kmem_cache_double_destroy+0x1bf/0x380 [ 26.655180] kasan_report+0x141/0x180 [ 26.655205] ? kmem_cache_double_destroy+0x1bf/0x380 [ 26.655247] ? kmem_cache_double_destroy+0x1bf/0x380 [ 26.655273] __kasan_check_byte+0x3d/0x50 [ 26.655297] kmem_cache_destroy+0x25/0x1d0 [ 26.655326] kmem_cache_double_destroy+0x1bf/0x380 [ 26.655352] ? __pfx_kmem_cache_double_destroy+0x10/0x10 [ 26.655377] ? finish_task_switch.isra.0+0x153/0x700 [ 26.655401] ? __switch_to+0x47/0xf80 [ 26.655432] ? __pfx_read_tsc+0x10/0x10 [ 26.655455] ? ktime_get_ts64+0x86/0x230 [ 26.655483] kunit_try_run_case+0x1a5/0x480 [ 26.655511] ? __pfx_kunit_try_run_case+0x10/0x10 [ 26.655535] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 26.655557] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 26.655585] ? __kthread_parkme+0x82/0x180 [ 26.655607] ? preempt_count_sub+0x50/0x80 [ 26.655632] ? __pfx_kunit_try_run_case+0x10/0x10 [ 26.655657] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 26.655692] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 26.655717] kthread+0x337/0x6f0 [ 26.655738] ? trace_preempt_on+0x20/0xc0 [ 26.655774] ? __pfx_kthread+0x10/0x10 [ 26.655795] ? _raw_spin_unlock_irq+0x47/0x80 [ 26.655861] ? calculate_sigpending+0x7b/0xa0 [ 26.655891] ? __pfx_kthread+0x10/0x10 [ 26.655914] ret_from_fork+0x116/0x1d0 [ 26.655934] ? __pfx_kthread+0x10/0x10 [ 26.655966] ret_from_fork_asm+0x1a/0x30 [ 26.656001] </TASK> [ 26.656013] [ 26.664719] Allocated by task 264: [ 26.665153] kasan_save_stack+0x45/0x70 [ 26.665454] kasan_save_track+0x18/0x40 [ 26.665659] kasan_save_alloc_info+0x3b/0x50 [ 26.666965] __kasan_slab_alloc+0x91/0xa0 [ 26.667503] kmem_cache_alloc_noprof+0x123/0x3f0 [ 26.667677] __kmem_cache_create_args+0x169/0x240 [ 26.667836] kmem_cache_double_destroy+0xd5/0x380 [ 26.668004] kunit_try_run_case+0x1a5/0x480 [ 26.668155] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 26.668327] kthread+0x337/0x6f0 [ 26.668444] ret_from_fork+0x116/0x1d0 [ 26.668573] ret_from_fork_asm+0x1a/0x30 [ 26.668708] [ 26.668774] Freed by task 264: [ 26.668882] kasan_save_stack+0x45/0x70 [ 26.669318] kasan_save_track+0x18/0x40 [ 26.669756] kasan_save_free_info+0x3f/0x60 [ 26.670339] __kasan_slab_free+0x5e/0x80 [ 26.670848] kmem_cache_free+0x249/0x420 [ 26.671332] slab_kmem_cache_release+0x2e/0x40 [ 26.671875] kmem_cache_release+0x16/0x20 [ 26.672276] kobject_put+0x181/0x450 [ 26.672665] sysfs_slab_release+0x16/0x20 [ 26.673202] kmem_cache_destroy+0xf0/0x1d0 [ 26.673601] kmem_cache_double_destroy+0x14e/0x380 [ 26.674192] kunit_try_run_case+0x1a5/0x480 [ 26.674659] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 26.675297] kthread+0x337/0x6f0 [ 26.675634] ret_from_fork+0x116/0x1d0 [ 26.676110] ret_from_fork_asm+0x1a/0x30 [ 26.676509] [ 26.676679] The buggy address belongs to the object at ffff888106258140 [ 26.676679] which belongs to the cache kmem_cache of size 208 [ 26.677805] The buggy address is located 0 bytes inside of [ 26.677805] freed 208-byte region [ffff888106258140, ffff888106258210) [ 26.678180] [ 26.678249] The buggy address belongs to the physical page: [ 26.678434] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106258 [ 26.678683] flags: 0x200000000000000(node=0|zone=2) [ 26.678849] page_type: f5(slab) [ 26.678984] raw: 0200000000000000 ffff888100041000 dead000000000122 0000000000000000 [ 26.679222] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 26.679451] page dumped because: kasan: bad access detected [ 26.679623] [ 26.679687] Memory state around the buggy address: [ 26.679843] ffff888106258000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 26.680412] ffff888106258080: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 26.681200] >ffff888106258100: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 26.681840] ^ [ 26.682511] ffff888106258180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 26.683391] ffff888106258200: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 26.684204] ==================================================================