Date
July 4, 2025, 11:11 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 19.461871] ================================================================== [ 19.461957] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x174/0x300 [ 19.462029] Read of size 1 at addr fff00000c56b6140 by task kunit_try_catch/215 [ 19.462081] [ 19.462120] CPU: 0 UID: 0 PID: 215 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT [ 19.462206] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.462234] Hardware name: linux,dummy-virt (DT) [ 19.462267] Call trace: [ 19.462292] show_stack+0x20/0x38 (C) [ 19.462343] dump_stack_lvl+0x8c/0xd0 [ 19.462392] print_report+0x118/0x608 [ 19.462439] kasan_report+0xdc/0x128 [ 19.462485] __kasan_check_byte+0x54/0x70 [ 19.462530] kmem_cache_destroy+0x34/0x218 [ 19.462577] kmem_cache_double_destroy+0x174/0x300 [ 19.462625] kunit_try_run_case+0x170/0x3f0 [ 19.462672] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.462726] kthread+0x328/0x630 [ 19.462767] ret_from_fork+0x10/0x20 [ 19.462830] [ 19.462849] Allocated by task 215: [ 19.462877] kasan_save_stack+0x3c/0x68 [ 19.462919] kasan_save_track+0x20/0x40 [ 19.462960] kasan_save_alloc_info+0x40/0x58 [ 19.463001] __kasan_slab_alloc+0xa8/0xb0 [ 19.463039] kmem_cache_alloc_noprof+0x10c/0x398 [ 19.463079] __kmem_cache_create_args+0x178/0x280 [ 19.463119] kmem_cache_double_destroy+0xc0/0x300 [ 19.463157] kunit_try_run_case+0x170/0x3f0 [ 19.463194] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.463237] kthread+0x328/0x630 [ 19.463271] ret_from_fork+0x10/0x20 [ 19.463306] [ 19.463324] Freed by task 215: [ 19.463350] kasan_save_stack+0x3c/0x68 [ 19.463387] kasan_save_track+0x20/0x40 [ 19.463424] kasan_save_free_info+0x4c/0x78 [ 19.463462] __kasan_slab_free+0x6c/0x98 [ 19.463500] kmem_cache_free+0x260/0x468 [ 19.463537] slab_kmem_cache_release+0x38/0x50 [ 19.463574] kmem_cache_release+0x1c/0x30 [ 19.463610] kobject_put+0x17c/0x420 [ 19.463646] sysfs_slab_release+0x1c/0x30 [ 19.463684] kmem_cache_destroy+0x118/0x218 [ 19.463720] kmem_cache_double_destroy+0x128/0x300 [ 19.463760] kunit_try_run_case+0x170/0x3f0 [ 19.463796] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.463848] kthread+0x328/0x630 [ 19.463881] ret_from_fork+0x10/0x20 [ 19.463925] [ 19.463946] The buggy address belongs to the object at fff00000c56b6140 [ 19.463946] which belongs to the cache kmem_cache of size 208 [ 19.464002] The buggy address is located 0 bytes inside of [ 19.464002] freed 208-byte region [fff00000c56b6140, fff00000c56b6210) [ 19.464063] [ 19.464083] The buggy address belongs to the physical page: [ 19.464118] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1056b6 [ 19.464171] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 19.464223] page_type: f5(slab) [ 19.464264] raw: 0bfffe0000000000 fff00000c0001000 dead000000000122 0000000000000000 [ 19.464314] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 19.464355] page dumped because: kasan: bad access detected [ 19.464386] [ 19.464405] Memory state around the buggy address: [ 19.464439] fff00000c56b6000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 19.464481] fff00000c56b6080: 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc [ 19.464523] >fff00000c56b6100: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 19.464561] ^ [ 19.464594] fff00000c56b6180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 19.464635] fff00000c56b6200: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.464671] ==================================================================
[ 12.830381] ================================================================== [ 12.830921] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x1bf/0x380 [ 12.831921] Read of size 1 at addr ffff888101d0ca00 by task kunit_try_catch/232 [ 12.832327] [ 12.832469] CPU: 1 UID: 0 PID: 232 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 12.832523] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.832537] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.832561] Call Trace: [ 12.832580] <TASK> [ 12.832603] dump_stack_lvl+0x73/0xb0 [ 12.832644] print_report+0xd1/0x650 [ 12.832669] ? __virt_addr_valid+0x1db/0x2d0 [ 12.832694] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.832719] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.832740] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.832764] kasan_report+0x141/0x180 [ 12.832784] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.832819] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.832843] __kasan_check_byte+0x3d/0x50 [ 12.832864] kmem_cache_destroy+0x25/0x1d0 [ 12.832887] kmem_cache_double_destroy+0x1bf/0x380 [ 12.833163] ? __pfx_kmem_cache_double_destroy+0x10/0x10 [ 12.833187] ? finish_task_switch.isra.0+0x153/0x700 [ 12.833231] ? __switch_to+0x47/0xf50 [ 12.833260] ? __pfx_read_tsc+0x10/0x10 [ 12.833281] ? ktime_get_ts64+0x86/0x230 [ 12.833305] kunit_try_run_case+0x1a5/0x480 [ 12.833330] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.833351] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.833376] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.833398] ? __kthread_parkme+0x82/0x180 [ 12.833418] ? preempt_count_sub+0x50/0x80 [ 12.833439] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.833462] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.833483] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.833506] kthread+0x337/0x6f0 [ 12.833524] ? trace_preempt_on+0x20/0xc0 [ 12.833546] ? __pfx_kthread+0x10/0x10 [ 12.833566] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.833586] ? calculate_sigpending+0x7b/0xa0 [ 12.833611] ? __pfx_kthread+0x10/0x10 [ 12.833631] ret_from_fork+0x116/0x1d0 [ 12.833649] ? __pfx_kthread+0x10/0x10 [ 12.833668] ret_from_fork_asm+0x1a/0x30 [ 12.833698] </TASK> [ 12.833710] [ 12.842938] Allocated by task 232: [ 12.843140] kasan_save_stack+0x45/0x70 [ 12.844059] kasan_save_track+0x18/0x40 [ 12.844215] kasan_save_alloc_info+0x3b/0x50 [ 12.844373] __kasan_slab_alloc+0x91/0xa0 [ 12.844508] kmem_cache_alloc_noprof+0x123/0x3f0 [ 12.845307] __kmem_cache_create_args+0x169/0x240 [ 12.845533] kmem_cache_double_destroy+0xd5/0x380 [ 12.845739] kunit_try_run_case+0x1a5/0x480 [ 12.845925] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.846146] kthread+0x337/0x6f0 [ 12.847008] ret_from_fork+0x116/0x1d0 [ 12.847347] ret_from_fork_asm+0x1a/0x30 [ 12.847548] [ 12.847636] Freed by task 232: [ 12.847783] kasan_save_stack+0x45/0x70 [ 12.847956] kasan_save_track+0x18/0x40 [ 12.848124] kasan_save_free_info+0x3f/0x60 [ 12.848389] __kasan_slab_free+0x56/0x70 [ 12.848572] kmem_cache_free+0x249/0x420 [ 12.848757] slab_kmem_cache_release+0x2e/0x40 [ 12.848967] kmem_cache_release+0x16/0x20 [ 12.849152] kobject_put+0x181/0x450 [ 12.850091] sysfs_slab_release+0x16/0x20 [ 12.850631] kmem_cache_destroy+0xf0/0x1d0 [ 12.850824] kmem_cache_double_destroy+0x14e/0x380 [ 12.851047] kunit_try_run_case+0x1a5/0x480 [ 12.851557] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.851866] kthread+0x337/0x6f0 [ 12.852155] ret_from_fork+0x116/0x1d0 [ 12.852679] ret_from_fork_asm+0x1a/0x30 [ 12.852884] [ 12.852980] The buggy address belongs to the object at ffff888101d0ca00 [ 12.852980] which belongs to the cache kmem_cache of size 208 [ 12.854097] The buggy address is located 0 bytes inside of [ 12.854097] freed 208-byte region [ffff888101d0ca00, ffff888101d0cad0) [ 12.854963] [ 12.855081] The buggy address belongs to the physical page: [ 12.855430] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101d0c [ 12.855758] flags: 0x200000000000000(node=0|zone=2) [ 12.855978] page_type: f5(slab) [ 12.856135] raw: 0200000000000000 ffff888100041000 dead000000000122 0000000000000000 [ 12.856932] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 12.857609] page dumped because: kasan: bad access detected [ 12.857933] [ 12.858168] Memory state around the buggy address: [ 12.858835] ffff888101d0c900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.859148] ffff888101d0c980: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.859705] >ffff888101d0ca00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.860001] ^ [ 12.860153] ffff888101d0ca80: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 12.861085] ffff888101d0cb00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.861738] ==================================================================