Date
June 23, 2025, 1:39 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 26.803963] ================================================================== [ 26.804124] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x174/0x300 [ 26.804277] Read of size 1 at addr fff00000c64b8000 by task kunit_try_catch/217 [ 26.804444] [ 26.804555] CPU: 0 UID: 0 PID: 217 Comm: kunit_try_catch Tainted: G B N 6.15.4-rc1 #1 PREEMPT [ 26.804766] Tainted: [B]=BAD_PAGE, [N]=TEST [ 26.804942] Hardware name: linux,dummy-virt (DT) [ 26.805140] Call trace: [ 26.805214] show_stack+0x20/0x38 (C) [ 26.805512] dump_stack_lvl+0x8c/0xd0 [ 26.806164] print_report+0x118/0x608 [ 26.806303] kasan_report+0xdc/0x128 [ 26.806451] __kasan_check_byte+0x54/0x70 [ 26.807016] kmem_cache_destroy+0x34/0x218 [ 26.807171] kmem_cache_double_destroy+0x174/0x300 [ 26.807572] kunit_try_run_case+0x170/0x3f0 [ 26.807823] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 26.808062] kthread+0x328/0x630 [ 26.808206] ret_from_fork+0x10/0x20 [ 26.808330] [ 26.808425] Allocated by task 217: [ 26.808535] kasan_save_stack+0x3c/0x68 [ 26.808712] kasan_save_track+0x20/0x40 [ 26.808837] kasan_save_alloc_info+0x40/0x58 [ 26.808933] __kasan_slab_alloc+0xa8/0xb0 [ 26.809052] kmem_cache_alloc_noprof+0x10c/0x398 [ 26.809160] __kmem_cache_create_args+0x178/0x280 [ 26.809356] kmem_cache_double_destroy+0xc0/0x300 [ 26.809496] kunit_try_run_case+0x170/0x3f0 [ 26.810061] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 26.810810] kthread+0x328/0x630 [ 26.810985] ret_from_fork+0x10/0x20 [ 26.811218] [ 26.811480] Freed by task 217: [ 26.811554] kasan_save_stack+0x3c/0x68 [ 26.811669] kasan_save_track+0x20/0x40 [ 26.811764] kasan_save_free_info+0x4c/0x78 [ 26.811864] __kasan_slab_free+0x6c/0x98 [ 26.812436] kmem_cache_free+0x260/0x468 [ 26.812568] slab_kmem_cache_release+0x38/0x50 [ 26.812969] kmem_cache_release+0x1c/0x30 [ 26.813237] kobject_put+0x17c/0x420 [ 26.813758] sysfs_slab_release+0x1c/0x30 [ 26.813856] kmem_cache_destroy+0x118/0x218 [ 26.814440] kmem_cache_double_destroy+0x128/0x300 [ 26.814630] kunit_try_run_case+0x170/0x3f0 [ 26.814751] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 26.815107] kthread+0x328/0x630 [ 26.815302] ret_from_fork+0x10/0x20 [ 26.815572] [ 26.815638] The buggy address belongs to the object at fff00000c64b8000 [ 26.815638] which belongs to the cache kmem_cache of size 208 [ 26.815775] The buggy address is located 0 bytes inside of [ 26.815775] freed 208-byte region [fff00000c64b8000, fff00000c64b80d0) [ 26.816444] [ 26.816667] The buggy address belongs to the physical page: [ 26.817083] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1064b8 [ 26.817429] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 26.817637] page_type: f5(slab) [ 26.817762] raw: 0bfffe0000000000 fff00000c0001000 dead000000000122 0000000000000000 [ 26.818134] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 26.818312] page dumped because: kasan: bad access detected [ 26.818406] [ 26.818458] Memory state around the buggy address: [ 26.818535] fff00000c64b7f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 26.818643] fff00000c64b7f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 26.818803] >fff00000c64b8000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 26.818901] ^ [ 26.819052] fff00000c64b8080: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 26.819344] fff00000c64b8100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 26.819457] ==================================================================
[ 18.607525] ================================================================== [ 18.608450] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x1bf/0x380 [ 18.609255] Read of size 1 at addr ffff888101488dc0 by task kunit_try_catch/236 [ 18.609982] [ 18.610283] CPU: 0 UID: 0 PID: 236 Comm: kunit_try_catch Tainted: G B N 6.15.4-rc1 #1 PREEMPT(voluntary) [ 18.610416] Tainted: [B]=BAD_PAGE, [N]=TEST [ 18.610458] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 18.610517] Call Trace: [ 18.610555] <TASK> [ 18.610739] dump_stack_lvl+0x73/0xb0 [ 18.610825] print_report+0xd1/0x650 [ 18.610903] ? __virt_addr_valid+0x1db/0x2d0 [ 18.610984] ? kmem_cache_double_destroy+0x1bf/0x380 [ 18.611058] ? kasan_complete_mode_report_info+0x64/0x200 [ 18.611136] ? kmem_cache_double_destroy+0x1bf/0x380 [ 18.611194] kasan_report+0x141/0x180 [ 18.611292] ? kmem_cache_double_destroy+0x1bf/0x380 [ 18.611374] ? kmem_cache_double_destroy+0x1bf/0x380 [ 18.611449] __kasan_check_byte+0x3d/0x50 [ 18.611527] kmem_cache_destroy+0x25/0x1d0 [ 18.611956] kmem_cache_double_destroy+0x1bf/0x380 [ 18.612042] ? __pfx_kmem_cache_double_destroy+0x10/0x10 [ 18.612105] ? finish_task_switch.isra.0+0x153/0x700 [ 18.612145] ? __switch_to+0x5d9/0xf60 [ 18.612175] ? dequeue_task_fair+0x166/0x4e0 [ 18.612250] ? __pfx_read_tsc+0x10/0x10 [ 18.612284] ? ktime_get_ts64+0x86/0x230 [ 18.612320] kunit_try_run_case+0x1a5/0x480 [ 18.612358] ? __pfx_kunit_try_run_case+0x10/0x10 [ 18.612394] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 18.612430] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 18.612463] ? __kthread_parkme+0x82/0x180 [ 18.612497] ? preempt_count_sub+0x50/0x80 [ 18.612532] ? __pfx_kunit_try_run_case+0x10/0x10 [ 18.612565] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 18.612651] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 18.612742] kthread+0x337/0x6f0 [ 18.612773] ? trace_preempt_on+0x20/0xc0 [ 18.612814] ? __pfx_kthread+0x10/0x10 [ 18.612842] ? _raw_spin_unlock_irq+0x47/0x80 [ 18.612875] ? calculate_sigpending+0x7b/0xa0 [ 18.612907] ? __pfx_kthread+0x10/0x10 [ 18.612933] ret_from_fork+0x41/0x80 [ 18.612966] ? __pfx_kthread+0x10/0x10 [ 18.612992] ret_from_fork_asm+0x1a/0x30 [ 18.613036] </TASK> [ 18.613052] [ 18.633083] Allocated by task 236: [ 18.633579] kasan_save_stack+0x45/0x70 [ 18.634402] kasan_save_track+0x18/0x40 [ 18.635025] kasan_save_alloc_info+0x3b/0x50 [ 18.635520] __kasan_slab_alloc+0x91/0xa0 [ 18.635971] kmem_cache_alloc_noprof+0x123/0x3f0 [ 18.636723] __kmem_cache_create_args+0x169/0x240 [ 18.637271] kmem_cache_double_destroy+0xd5/0x380 [ 18.638133] kunit_try_run_case+0x1a5/0x480 [ 18.638659] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 18.639176] kthread+0x337/0x6f0 [ 18.639767] ret_from_fork+0x41/0x80 [ 18.640358] ret_from_fork_asm+0x1a/0x30 [ 18.641152] [ 18.641399] Freed by task 236: [ 18.641962] kasan_save_stack+0x45/0x70 [ 18.642312] kasan_save_track+0x18/0x40 [ 18.643264] kasan_save_free_info+0x3f/0x60 [ 18.643890] __kasan_slab_free+0x56/0x70 [ 18.644312] kmem_cache_free+0x249/0x420 [ 18.644712] slab_kmem_cache_release+0x2e/0x40 [ 18.645141] kmem_cache_release+0x16/0x20 [ 18.645529] kobject_put+0x181/0x450 [ 18.645941] sysfs_slab_release+0x16/0x20 [ 18.646428] kmem_cache_destroy+0xf0/0x1d0 [ 18.646838] kmem_cache_double_destroy+0x14e/0x380 [ 18.647397] kunit_try_run_case+0x1a5/0x480 [ 18.647969] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 18.648537] kthread+0x337/0x6f0 [ 18.649029] ret_from_fork+0x41/0x80 [ 18.649523] ret_from_fork_asm+0x1a/0x30 [ 18.650298] [ 18.650550] The buggy address belongs to the object at ffff888101488dc0 [ 18.650550] which belongs to the cache kmem_cache of size 208 [ 18.651791] The buggy address is located 0 bytes inside of [ 18.651791] freed 208-byte region [ffff888101488dc0, ffff888101488e90) [ 18.652891] [ 18.653123] The buggy address belongs to the physical page: [ 18.653976] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101488 [ 18.654883] flags: 0x200000000000000(node=0|zone=2) [ 18.655349] page_type: f5(slab) [ 18.655898] raw: 0200000000000000 ffff888100041000 dead000000000122 0000000000000000 [ 18.656555] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 18.657349] page dumped because: kasan: bad access detected [ 18.658287] [ 18.658586] Memory state around the buggy address: [ 18.659076] ffff888101488c80: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 18.659875] ffff888101488d00: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 18.660417] >ffff888101488d80: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 18.661091] ^ [ 18.661979] ffff888101488e00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 18.662558] ffff888101488e80: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.663338] ==================================================================