Date
July 2, 2025, 11:09 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 19.455712] ================================================================== [ 19.455799] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x174/0x300 [ 19.455871] Read of size 1 at addr fff00000c5834dc0 by task kunit_try_catch/215 [ 19.455924] [ 19.455964] CPU: 0 UID: 0 PID: 215 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT [ 19.456050] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.456079] Hardware name: linux,dummy-virt (DT) [ 19.456115] Call trace: [ 19.456138] show_stack+0x20/0x38 (C) [ 19.456192] dump_stack_lvl+0x8c/0xd0 [ 19.456242] print_report+0x118/0x608 [ 19.456287] kasan_report+0xdc/0x128 [ 19.456334] __kasan_check_byte+0x54/0x70 [ 19.456380] kmem_cache_destroy+0x34/0x218 [ 19.456426] kmem_cache_double_destroy+0x174/0x300 [ 19.456476] kunit_try_run_case+0x170/0x3f0 [ 19.456525] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.456590] kthread+0x328/0x630 [ 19.456634] ret_from_fork+0x10/0x20 [ 19.456683] [ 19.456715] Allocated by task 215: [ 19.456746] kasan_save_stack+0x3c/0x68 [ 19.456786] kasan_save_track+0x20/0x40 [ 19.456824] kasan_save_alloc_info+0x40/0x58 [ 19.456864] __kasan_slab_alloc+0xa8/0xb0 [ 19.456900] kmem_cache_alloc_noprof+0x10c/0x398 [ 19.456941] __kmem_cache_create_args+0x178/0x280 [ 19.456979] kmem_cache_double_destroy+0xc0/0x300 [ 19.457017] kunit_try_run_case+0x170/0x3f0 [ 19.457054] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.457096] kthread+0x328/0x630 [ 19.457128] ret_from_fork+0x10/0x20 [ 19.457163] [ 19.457182] Freed by task 215: [ 19.457208] kasan_save_stack+0x3c/0x68 [ 19.457247] kasan_save_track+0x20/0x40 [ 19.457283] kasan_save_free_info+0x4c/0x78 [ 19.457323] __kasan_slab_free+0x6c/0x98 [ 19.457360] kmem_cache_free+0x260/0x468 [ 19.457397] slab_kmem_cache_release+0x38/0x50 [ 19.457436] kmem_cache_release+0x1c/0x30 [ 19.457471] kobject_put+0x17c/0x420 [ 19.457507] sysfs_slab_release+0x1c/0x30 [ 19.457542] kmem_cache_destroy+0x118/0x218 [ 19.457590] kmem_cache_double_destroy+0x128/0x300 [ 19.457629] kunit_try_run_case+0x170/0x3f0 [ 19.457665] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.457708] kthread+0x328/0x630 [ 19.457739] ret_from_fork+0x10/0x20 [ 19.457775] [ 19.457794] The buggy address belongs to the object at fff00000c5834dc0 [ 19.457794] which belongs to the cache kmem_cache of size 208 [ 19.457851] The buggy address is located 0 bytes inside of [ 19.457851] freed 208-byte region [fff00000c5834dc0, fff00000c5834e90) [ 19.457913] [ 19.457938] The buggy address belongs to the physical page: [ 19.457971] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105834 [ 19.458025] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 19.458077] page_type: f5(slab) [ 19.458120] raw: 0bfffe0000000000 fff00000c0001000 dead000000000122 0000000000000000 [ 19.458170] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 19.458212] page dumped because: kasan: bad access detected [ 19.458243] [ 19.458262] Memory state around the buggy address: [ 19.458295] fff00000c5834c80: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 19.458338] fff00000c5834d00: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 19.458382] >fff00000c5834d80: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 19.458420] ^ [ 19.458455] fff00000c5834e00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 19.458497] fff00000c5834e80: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.458535] ==================================================================
[ 12.252311] ================================================================== [ 12.253157] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x1bf/0x380 [ 12.254328] Read of size 1 at addr ffff888100fae8c0 by task kunit_try_catch/234 [ 12.255126] [ 12.255395] CPU: 1 UID: 0 PID: 234 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 12.255448] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.255461] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.255484] Call Trace: [ 12.255497] <TASK> [ 12.255516] dump_stack_lvl+0x73/0xb0 [ 12.255553] print_report+0xd1/0x650 [ 12.255579] ? __virt_addr_valid+0x1db/0x2d0 [ 12.255604] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.255628] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.255649] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.255673] kasan_report+0x141/0x180 [ 12.255699] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.255725] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.255749] __kasan_check_byte+0x3d/0x50 [ 12.255770] kmem_cache_destroy+0x25/0x1d0 [ 12.255793] kmem_cache_double_destroy+0x1bf/0x380 [ 12.255815] ? __pfx_kmem_cache_double_destroy+0x10/0x10 [ 12.255838] ? finish_task_switch.isra.0+0x153/0x700 [ 12.255862] ? __switch_to+0x47/0xf50 [ 12.255890] ? __pfx_read_tsc+0x10/0x10 [ 12.255911] ? ktime_get_ts64+0x86/0x230 [ 12.255935] kunit_try_run_case+0x1a5/0x480 [ 12.255961] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.255983] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.256006] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.256029] ? __kthread_parkme+0x82/0x180 [ 12.256050] ? preempt_count_sub+0x50/0x80 [ 12.256072] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.256094] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.256116] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.256138] kthread+0x337/0x6f0 [ 12.256157] ? trace_preempt_on+0x20/0xc0 [ 12.256180] ? __pfx_kthread+0x10/0x10 [ 12.256200] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.256220] ? calculate_sigpending+0x7b/0xa0 [ 12.256244] ? __pfx_kthread+0x10/0x10 [ 12.256263] ret_from_fork+0x116/0x1d0 [ 12.256282] ? __pfx_kthread+0x10/0x10 [ 12.256302] ret_from_fork_asm+0x1a/0x30 [ 12.256332] </TASK> [ 12.256344] [ 12.272059] Allocated by task 234: [ 12.272351] kasan_save_stack+0x45/0x70 [ 12.272522] kasan_save_track+0x18/0x40 [ 12.272674] kasan_save_alloc_info+0x3b/0x50 [ 12.273150] __kasan_slab_alloc+0x91/0xa0 [ 12.273308] kmem_cache_alloc_noprof+0x123/0x3f0 [ 12.273515] __kmem_cache_create_args+0x169/0x240 [ 12.274624] kmem_cache_double_destroy+0xd5/0x380 [ 12.274866] kunit_try_run_case+0x1a5/0x480 [ 12.275025] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.275391] kthread+0x337/0x6f0 [ 12.275551] ret_from_fork+0x116/0x1d0 [ 12.275838] ret_from_fork_asm+0x1a/0x30 [ 12.276111] [ 12.276241] Freed by task 234: [ 12.276505] kasan_save_stack+0x45/0x70 [ 12.276905] kasan_save_track+0x18/0x40 [ 12.277105] kasan_save_free_info+0x3f/0x60 [ 12.277282] __kasan_slab_free+0x56/0x70 [ 12.277484] kmem_cache_free+0x249/0x420 [ 12.277717] slab_kmem_cache_release+0x2e/0x40 [ 12.278192] kmem_cache_release+0x16/0x20 [ 12.278430] kobject_put+0x181/0x450 [ 12.278573] sysfs_slab_release+0x16/0x20 [ 12.279058] kmem_cache_destroy+0xf0/0x1d0 [ 12.279240] kmem_cache_double_destroy+0x14e/0x380 [ 12.279623] kunit_try_run_case+0x1a5/0x480 [ 12.279946] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.280405] kthread+0x337/0x6f0 [ 12.280543] ret_from_fork+0x116/0x1d0 [ 12.280879] ret_from_fork_asm+0x1a/0x30 [ 12.281204] [ 12.281306] The buggy address belongs to the object at ffff888100fae8c0 [ 12.281306] which belongs to the cache kmem_cache of size 208 [ 12.282048] The buggy address is located 0 bytes inside of [ 12.282048] freed 208-byte region [ffff888100fae8c0, ffff888100fae990) [ 12.282806] [ 12.282940] The buggy address belongs to the physical page: [ 12.283308] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x100fae [ 12.283783] flags: 0x200000000000000(node=0|zone=2) [ 12.284116] page_type: f5(slab) [ 12.284454] raw: 0200000000000000 ffff888100041000 dead000000000122 0000000000000000 [ 12.284856] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 12.285255] page dumped because: kasan: bad access detected [ 12.285674] [ 12.285815] Memory state around the buggy address: [ 12.286044] ffff888100fae780: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.286427] ffff888100fae800: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 12.286972] >ffff888100fae880: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 12.287381] ^ [ 12.287713] ffff888100fae900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.288020] ffff888100fae980: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.288321] ==================================================================