Date
July 5, 2025, 11:09 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 20.916620] ================================================================== [ 20.916722] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x174/0x300 [ 20.916801] Read of size 1 at addr fff00000c1afadc0 by task kunit_try_catch/216 [ 20.916862] [ 20.916909] CPU: 0 UID: 0 PID: 216 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT [ 20.917011] Tainted: [B]=BAD_PAGE, [N]=TEST [ 20.917041] Hardware name: linux,dummy-virt (DT) [ 20.917081] Call trace: [ 20.917109] show_stack+0x20/0x38 (C) [ 20.917168] dump_stack_lvl+0x8c/0xd0 [ 20.917224] print_report+0x118/0x608 [ 20.917280] kasan_report+0xdc/0x128 [ 20.917333] __kasan_check_byte+0x54/0x70 [ 20.917401] kmem_cache_destroy+0x34/0x218 [ 20.917450] kmem_cache_double_destroy+0x174/0x300 [ 20.917498] kunit_try_run_case+0x170/0x3f0 [ 20.917544] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 20.917596] kthread+0x328/0x630 [ 20.917639] ret_from_fork+0x10/0x20 [ 20.917687] [ 20.917708] Allocated by task 216: [ 20.917738] kasan_save_stack+0x3c/0x68 [ 20.917780] kasan_save_track+0x20/0x40 [ 20.917819] kasan_save_alloc_info+0x40/0x58 [ 20.917859] __kasan_slab_alloc+0xa8/0xb0 [ 20.917897] kmem_cache_alloc_noprof+0x10c/0x398 [ 20.917937] __kmem_cache_create_args+0x178/0x280 [ 20.917976] kmem_cache_double_destroy+0xc0/0x300 [ 20.918053] kunit_try_run_case+0x170/0x3f0 [ 20.918122] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 20.918201] kthread+0x328/0x630 [ 20.918259] ret_from_fork+0x10/0x20 [ 20.918299] [ 20.918322] Freed by task 216: [ 20.918364] kasan_save_stack+0x3c/0x68 [ 20.918411] kasan_save_track+0x20/0x40 [ 20.918464] kasan_save_free_info+0x4c/0x78 [ 20.918509] __kasan_slab_free+0x6c/0x98 [ 20.918550] kmem_cache_free+0x260/0x468 [ 20.918588] slab_kmem_cache_release+0x38/0x50 [ 20.918626] kmem_cache_release+0x1c/0x30 [ 20.918664] kobject_put+0x17c/0x420 [ 20.918702] sysfs_slab_release+0x1c/0x30 [ 20.918741] kmem_cache_destroy+0x118/0x218 [ 20.918779] kmem_cache_double_destroy+0x128/0x300 [ 20.918820] kunit_try_run_case+0x170/0x3f0 [ 20.918859] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 20.918902] kthread+0x328/0x630 [ 20.918937] ret_from_fork+0x10/0x20 [ 20.918974] [ 20.918995] The buggy address belongs to the object at fff00000c1afadc0 [ 20.918995] which belongs to the cache kmem_cache of size 208 [ 20.919054] The buggy address is located 0 bytes inside of [ 20.919054] freed 208-byte region [fff00000c1afadc0, fff00000c1afae90) [ 20.919114] [ 20.919136] The buggy address belongs to the physical page: [ 20.919170] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101afa [ 20.919226] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 20.919280] page_type: f5(slab) [ 20.919325] raw: 0bfffe0000000000 fff00000c0001000 dead000000000122 0000000000000000 [ 20.919389] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 20.919432] page dumped because: kasan: bad access detected [ 20.919466] [ 20.919485] Memory state around the buggy address: [ 20.919521] fff00000c1afac80: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 20.919564] fff00000c1afad00: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 20.919608] >fff00000c1afad80: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 20.919645] ^ [ 20.919680] fff00000c1afae00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 20.919722] fff00000c1afae80: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 20.919759] ==================================================================
[ 14.583684] ================================================================== [ 14.584397] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x1bf/0x380 [ 14.584733] Read of size 1 at addr ffff888101b9bc80 by task kunit_try_catch/232 [ 14.585084] [ 14.585255] CPU: 0 UID: 0 PID: 232 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 14.585314] Tainted: [B]=BAD_PAGE, [N]=TEST [ 14.585329] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 14.585357] Call Trace: [ 14.585374] <TASK> [ 14.585398] dump_stack_lvl+0x73/0xb0 [ 14.585436] print_report+0xd1/0x650 [ 14.585464] ? __virt_addr_valid+0x1db/0x2d0 [ 14.585493] ? kmem_cache_double_destroy+0x1bf/0x380 [ 14.585522] ? kasan_complete_mode_report_info+0x64/0x200 [ 14.585548] ? kmem_cache_double_destroy+0x1bf/0x380 [ 14.585576] kasan_report+0x141/0x180 [ 14.585603] ? kmem_cache_double_destroy+0x1bf/0x380 [ 14.585635] ? kmem_cache_double_destroy+0x1bf/0x380 [ 14.585680] __kasan_check_byte+0x3d/0x50 [ 14.585706] kmem_cache_destroy+0x25/0x1d0 [ 14.585734] kmem_cache_double_destroy+0x1bf/0x380 [ 14.585762] ? __pfx_kmem_cache_double_destroy+0x10/0x10 [ 14.585817] ? finish_task_switch.isra.0+0x153/0x700 [ 14.585844] ? __switch_to+0x47/0xf50 [ 14.585897] ? __pfx_read_tsc+0x10/0x10 [ 14.585924] ? ktime_get_ts64+0x86/0x230 [ 14.585976] kunit_try_run_case+0x1a5/0x480 [ 14.586008] ? __pfx_kunit_try_run_case+0x10/0x10 [ 14.586032] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 14.586076] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 14.586102] ? __kthread_parkme+0x82/0x180 [ 14.586129] ? preempt_count_sub+0x50/0x80 [ 14.586155] ? __pfx_kunit_try_run_case+0x10/0x10 [ 14.586183] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 14.586211] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 14.586237] kthread+0x337/0x6f0 [ 14.586260] ? trace_preempt_on+0x20/0xc0 [ 14.586289] ? __pfx_kthread+0x10/0x10 [ 14.586313] ? _raw_spin_unlock_irq+0x47/0x80 [ 14.586337] ? calculate_sigpending+0x7b/0xa0 [ 14.586369] ? __pfx_kthread+0x10/0x10 [ 14.586394] ret_from_fork+0x116/0x1d0 [ 14.586416] ? __pfx_kthread+0x10/0x10 [ 14.586447] ret_from_fork_asm+0x1a/0x30 [ 14.586486] </TASK> [ 14.586500] [ 14.605268] Allocated by task 232: [ 14.605599] kasan_save_stack+0x45/0x70 [ 14.606063] kasan_save_track+0x18/0x40 [ 14.606273] kasan_save_alloc_info+0x3b/0x50 [ 14.606944] __kasan_slab_alloc+0x91/0xa0 [ 14.607424] kmem_cache_alloc_noprof+0x123/0x3f0 [ 14.607911] __kmem_cache_create_args+0x169/0x240 [ 14.608318] kmem_cache_double_destroy+0xd5/0x380 [ 14.608714] kunit_try_run_case+0x1a5/0x480 [ 14.609268] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 14.609811] kthread+0x337/0x6f0 [ 14.609990] ret_from_fork+0x116/0x1d0 [ 14.610202] ret_from_fork_asm+0x1a/0x30 [ 14.610429] [ 14.610543] Freed by task 232: [ 14.610738] kasan_save_stack+0x45/0x70 [ 14.611352] kasan_save_track+0x18/0x40 [ 14.611882] kasan_save_free_info+0x3f/0x60 [ 14.612183] __kasan_slab_free+0x56/0x70 [ 14.612598] kmem_cache_free+0x249/0x420 [ 14.612975] slab_kmem_cache_release+0x2e/0x40 [ 14.613479] kmem_cache_release+0x16/0x20 [ 14.613665] kobject_put+0x181/0x450 [ 14.613914] sysfs_slab_release+0x16/0x20 [ 14.614082] kmem_cache_destroy+0xf0/0x1d0 [ 14.614387] kmem_cache_double_destroy+0x14e/0x380 [ 14.614586] kunit_try_run_case+0x1a5/0x480 [ 14.615071] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 14.615366] kthread+0x337/0x6f0 [ 14.615521] ret_from_fork+0x116/0x1d0 [ 14.615764] ret_from_fork_asm+0x1a/0x30 [ 14.616004] [ 14.616110] The buggy address belongs to the object at ffff888101b9bc80 [ 14.616110] which belongs to the cache kmem_cache of size 208 [ 14.616685] The buggy address is located 0 bytes inside of [ 14.616685] freed 208-byte region [ffff888101b9bc80, ffff888101b9bd50) [ 14.617505] [ 14.617644] The buggy address belongs to the physical page: [ 14.618024] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101b9b [ 14.618320] flags: 0x200000000000000(node=0|zone=2) [ 14.618717] page_type: f5(slab) [ 14.618921] raw: 0200000000000000 ffff888100041000 dead000000000122 0000000000000000 [ 14.619369] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 14.619641] page dumped because: kasan: bad access detected [ 14.620052] [ 14.620167] Memory state around the buggy address: [ 14.620438] ffff888101b9bb80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 14.620765] ffff888101b9bc00: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 14.621247] >ffff888101b9bc80: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 14.621506] ^ [ 14.621795] ffff888101b9bd00: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 14.622174] ffff888101b9bd80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 14.622436] ==================================================================