Date
July 17, 2025, 11:11 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 18.019536] ================================================================== [ 18.019619] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x174/0x300 [ 18.019694] Read of size 1 at addr fff00000c3e56a00 by task kunit_try_catch/215 [ 18.019745] [ 18.019813] CPU: 1 UID: 0 PID: 215 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT [ 18.019915] Tainted: [B]=BAD_PAGE, [N]=TEST [ 18.019942] Hardware name: linux,dummy-virt (DT) [ 18.019977] Call trace: [ 18.020030] show_stack+0x20/0x38 (C) [ 18.020157] dump_stack_lvl+0x8c/0xd0 [ 18.020366] print_report+0x118/0x5d0 [ 18.020500] kasan_report+0xdc/0x128 [ 18.020726] __kasan_check_byte+0x54/0x70 [ 18.020915] kmem_cache_destroy+0x34/0x218 [ 18.021074] kmem_cache_double_destroy+0x174/0x300 [ 18.021125] kunit_try_run_case+0x170/0x3f0 [ 18.021344] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.021396] kthread+0x328/0x630 [ 18.021440] ret_from_fork+0x10/0x20 [ 18.021489] [ 18.021508] Allocated by task 215: [ 18.021537] kasan_save_stack+0x3c/0x68 [ 18.021578] kasan_save_track+0x20/0x40 [ 18.021616] kasan_save_alloc_info+0x40/0x58 [ 18.021696] __kasan_slab_alloc+0xa8/0xb0 [ 18.021799] kmem_cache_alloc_noprof+0x10c/0x398 [ 18.021910] __kmem_cache_create_args+0x178/0x280 [ 18.022027] kmem_cache_double_destroy+0xc0/0x300 [ 18.022160] kunit_try_run_case+0x170/0x3f0 [ 18.022269] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.022428] kthread+0x328/0x630 [ 18.022478] ret_from_fork+0x10/0x20 [ 18.022513] [ 18.022531] Freed by task 215: [ 18.022737] kasan_save_stack+0x3c/0x68 [ 18.022944] kasan_save_track+0x20/0x40 [ 18.023064] kasan_save_free_info+0x4c/0x78 [ 18.023102] __kasan_slab_free+0x6c/0x98 [ 18.023547] kmem_cache_free+0x260/0x468 [ 18.023735] slab_kmem_cache_release+0x38/0x50 [ 18.023788] kmem_cache_release+0x1c/0x30 [ 18.024110] kobject_put+0x17c/0x420 [ 18.024176] sysfs_slab_release+0x1c/0x30 [ 18.024540] kmem_cache_destroy+0x118/0x218 [ 18.024655] kmem_cache_double_destroy+0x128/0x300 [ 18.024710] kunit_try_run_case+0x170/0x3f0 [ 18.024816] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.025036] kthread+0x328/0x630 [ 18.025188] ret_from_fork+0x10/0x20 [ 18.025269] [ 18.025290] The buggy address belongs to the object at fff00000c3e56a00 [ 18.025290] which belongs to the cache kmem_cache of size 208 [ 18.025416] The buggy address is located 0 bytes inside of [ 18.025416] freed 208-byte region [fff00000c3e56a00, fff00000c3e56ad0) [ 18.025564] [ 18.025603] The buggy address belongs to the physical page: [ 18.025651] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103e56 [ 18.025755] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 18.026134] page_type: f5(slab) [ 18.026204] raw: 0bfffe0000000000 fff00000c0001000 dead000000000122 0000000000000000 [ 18.026256] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 18.026343] page dumped because: kasan: bad access detected [ 18.026424] [ 18.026441] Memory state around the buggy address: [ 18.026505] fff00000c3e56900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 18.026611] fff00000c3e56980: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.026663] >fff00000c3e56a00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 18.026743] ^ [ 18.026811] fff00000c3e56a80: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 18.026907] fff00000c3e56b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.026945] ==================================================================
[ 13.140184] ================================================================== [ 13.140676] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x1bf/0x380 [ 13.141377] Read of size 1 at addr ffff888101a30640 by task kunit_try_catch/232 [ 13.142123] [ 13.142253] CPU: 0 UID: 0 PID: 232 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 13.142304] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.142316] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.142339] Call Trace: [ 13.142354] <TASK> [ 13.142374] dump_stack_lvl+0x73/0xb0 [ 13.142408] print_report+0xd1/0x610 [ 13.142589] ? __virt_addr_valid+0x1db/0x2d0 [ 13.142617] ? kmem_cache_double_destroy+0x1bf/0x380 [ 13.142642] ? kasan_complete_mode_report_info+0x64/0x200 [ 13.142665] ? kmem_cache_double_destroy+0x1bf/0x380 [ 13.142691] kasan_report+0x141/0x180 [ 13.142712] ? kmem_cache_double_destroy+0x1bf/0x380 [ 13.142740] ? kmem_cache_double_destroy+0x1bf/0x380 [ 13.142766] __kasan_check_byte+0x3d/0x50 [ 13.142788] kmem_cache_destroy+0x25/0x1d0 [ 13.142826] kmem_cache_double_destroy+0x1bf/0x380 [ 13.142850] ? __pfx_kmem_cache_double_destroy+0x10/0x10 [ 13.142874] ? finish_task_switch.isra.0+0x153/0x700 [ 13.142898] ? __switch_to+0x47/0xf50 [ 13.142929] ? __pfx_read_tsc+0x10/0x10 [ 13.142950] ? ktime_get_ts64+0x86/0x230 [ 13.142975] kunit_try_run_case+0x1a5/0x480 [ 13.143002] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.143025] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 13.143064] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 13.143087] ? __kthread_parkme+0x82/0x180 [ 13.143109] ? preempt_count_sub+0x50/0x80 [ 13.143132] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.143155] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.143179] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.143203] kthread+0x337/0x6f0 [ 13.143221] ? trace_preempt_on+0x20/0xc0 [ 13.143245] ? __pfx_kthread+0x10/0x10 [ 13.143265] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.143285] ? calculate_sigpending+0x7b/0xa0 [ 13.143311] ? __pfx_kthread+0x10/0x10 [ 13.143332] ret_from_fork+0x116/0x1d0 [ 13.143351] ? __pfx_kthread+0x10/0x10 [ 13.143370] ret_from_fork_asm+0x1a/0x30 [ 13.143404] </TASK> [ 13.143414] [ 13.159029] Allocated by task 232: [ 13.159677] kasan_save_stack+0x45/0x70 [ 13.160295] kasan_save_track+0x18/0x40 [ 13.160447] kasan_save_alloc_info+0x3b/0x50 [ 13.160606] __kasan_slab_alloc+0x91/0xa0 [ 13.160955] kmem_cache_alloc_noprof+0x123/0x3f0 [ 13.161461] __kmem_cache_create_args+0x169/0x240 [ 13.162084] kmem_cache_double_destroy+0xd5/0x380 [ 13.162511] kunit_try_run_case+0x1a5/0x480 [ 13.162951] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.163253] kthread+0x337/0x6f0 [ 13.163382] ret_from_fork+0x116/0x1d0 [ 13.163518] ret_from_fork_asm+0x1a/0x30 [ 13.163761] [ 13.163925] Freed by task 232: [ 13.164427] kasan_save_stack+0x45/0x70 [ 13.164905] kasan_save_track+0x18/0x40 [ 13.165273] kasan_save_free_info+0x3f/0x60 [ 13.165644] __kasan_slab_free+0x56/0x70 [ 13.166099] kmem_cache_free+0x249/0x420 [ 13.166477] slab_kmem_cache_release+0x2e/0x40 [ 13.166969] kmem_cache_release+0x16/0x20 [ 13.167238] kobject_put+0x181/0x450 [ 13.167373] sysfs_slab_release+0x16/0x20 [ 13.167514] kmem_cache_destroy+0xf0/0x1d0 [ 13.167693] kmem_cache_double_destroy+0x14e/0x380 [ 13.168352] kunit_try_run_case+0x1a5/0x480 [ 13.168774] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.169328] kthread+0x337/0x6f0 [ 13.169656] ret_from_fork+0x116/0x1d0 [ 13.170151] ret_from_fork_asm+0x1a/0x30 [ 13.170524] [ 13.170684] The buggy address belongs to the object at ffff888101a30640 [ 13.170684] which belongs to the cache kmem_cache of size 208 [ 13.171215] The buggy address is located 0 bytes inside of [ 13.171215] freed 208-byte region [ffff888101a30640, ffff888101a30710) [ 13.171567] [ 13.171734] The buggy address belongs to the physical page: [ 13.172219] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101a30 [ 13.173304] flags: 0x200000000000000(node=0|zone=2) [ 13.173773] page_type: f5(slab) [ 13.174148] raw: 0200000000000000 ffff888100041000 dead000000000122 0000000000000000 [ 13.174872] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 13.175528] page dumped because: kasan: bad access detected [ 13.176180] [ 13.176355] Memory state around the buggy address: [ 13.176605] ffff888101a30500: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 13.177206] ffff888101a30580: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 13.177431] >ffff888101a30600: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 13.177762] ^ [ 13.178328] ffff888101a30680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 13.179030] ffff888101a30700: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.179679] ==================================================================