Date
July 11, 2025, 11:09 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 18.017593] ================================================================== [ 18.017678] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x174/0x300 [ 18.017753] Read of size 1 at addr fff00000c3ea3c80 by task kunit_try_catch/216 [ 18.017805] [ 18.017862] CPU: 0 UID: 0 PID: 216 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT [ 18.017955] Tainted: [B]=BAD_PAGE, [N]=TEST [ 18.017983] Hardware name: linux,dummy-virt (DT) [ 18.018018] Call trace: [ 18.018045] show_stack+0x20/0x38 (C) [ 18.018100] dump_stack_lvl+0x8c/0xd0 [ 18.018151] print_report+0x118/0x608 [ 18.018197] kasan_report+0xdc/0x128 [ 18.018242] __kasan_check_byte+0x54/0x70 [ 18.018288] kmem_cache_destroy+0x34/0x218 [ 18.018335] kmem_cache_double_destroy+0x174/0x300 [ 18.018384] kunit_try_run_case+0x170/0x3f0 [ 18.018434] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.018484] kthread+0x328/0x630 [ 18.018528] ret_from_fork+0x10/0x20 [ 18.018576] [ 18.018594] Allocated by task 216: [ 18.018625] kasan_save_stack+0x3c/0x68 [ 18.018667] kasan_save_track+0x20/0x40 [ 18.018704] kasan_save_alloc_info+0x40/0x58 [ 18.018748] __kasan_slab_alloc+0xa8/0xb0 [ 18.018784] kmem_cache_alloc_noprof+0x10c/0x398 [ 18.018825] __kmem_cache_create_args+0x178/0x280 [ 18.018873] kmem_cache_double_destroy+0xc0/0x300 [ 18.018910] kunit_try_run_case+0x170/0x3f0 [ 18.018948] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.018989] kthread+0x328/0x630 [ 18.019021] ret_from_fork+0x10/0x20 [ 18.019057] [ 18.019075] Freed by task 216: [ 18.019101] kasan_save_stack+0x3c/0x68 [ 18.019137] kasan_save_track+0x20/0x40 [ 18.019174] kasan_save_free_info+0x4c/0x78 [ 18.019212] __kasan_slab_free+0x6c/0x98 [ 18.019250] kmem_cache_free+0x260/0x468 [ 18.019285] slab_kmem_cache_release+0x38/0x50 [ 18.019328] kmem_cache_release+0x1c/0x30 [ 18.019364] kobject_put+0x17c/0x420 [ 18.019398] sysfs_slab_release+0x1c/0x30 [ 18.019436] kmem_cache_destroy+0x118/0x218 [ 18.019471] kmem_cache_double_destroy+0x128/0x300 [ 18.019510] kunit_try_run_case+0x170/0x3f0 [ 18.019546] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.019589] kthread+0x328/0x630 [ 18.019622] ret_from_fork+0x10/0x20 [ 18.019656] [ 18.019675] The buggy address belongs to the object at fff00000c3ea3c80 [ 18.019675] which belongs to the cache kmem_cache of size 208 [ 18.019732] The buggy address is located 0 bytes inside of [ 18.019732] freed 208-byte region [fff00000c3ea3c80, fff00000c3ea3d50) [ 18.019792] [ 18.019814] The buggy address belongs to the physical page: [ 18.019857] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103ea3 [ 18.019912] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 18.019964] page_type: f5(slab) [ 18.020005] raw: 0bfffe0000000000 fff00000c0001000 dead000000000122 0000000000000000 [ 18.020056] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 18.020098] page dumped because: kasan: bad access detected [ 18.020130] [ 18.020148] Memory state around the buggy address: [ 18.020181] fff00000c3ea3b80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 18.020225] fff00000c3ea3c00: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.020267] >fff00000c3ea3c80: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 18.020306] ^ [ 18.020334] fff00000c3ea3d00: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 18.020378] fff00000c3ea3d80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.020418] ==================================================================
[ 13.218024] ================================================================== [ 13.218843] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x1bf/0x380 [ 13.219253] Read of size 1 at addr ffff88810394a140 by task kunit_try_catch/232 [ 13.219574] [ 13.219673] CPU: 0 UID: 0 PID: 232 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 13.219719] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.219730] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.219753] Call Trace: [ 13.219766] <TASK> [ 13.219783] dump_stack_lvl+0x73/0xb0 [ 13.219815] print_report+0xd1/0x650 [ 13.219838] ? __virt_addr_valid+0x1db/0x2d0 [ 13.219862] ? kmem_cache_double_destroy+0x1bf/0x380 [ 13.219887] ? kasan_complete_mode_report_info+0x64/0x200 [ 13.219910] ? kmem_cache_double_destroy+0x1bf/0x380 [ 13.219947] kasan_report+0x141/0x180 [ 13.219969] ? kmem_cache_double_destroy+0x1bf/0x380 [ 13.219997] ? kmem_cache_double_destroy+0x1bf/0x380 [ 13.220023] __kasan_check_byte+0x3d/0x50 [ 13.220046] kmem_cache_destroy+0x25/0x1d0 [ 13.220070] kmem_cache_double_destroy+0x1bf/0x380 [ 13.220095] ? __pfx_kmem_cache_double_destroy+0x10/0x10 [ 13.220120] ? finish_task_switch.isra.0+0x153/0x700 [ 13.220143] ? __switch_to+0x47/0xf50 [ 13.220173] ? __pfx_read_tsc+0x10/0x10 [ 13.220194] ? ktime_get_ts64+0x86/0x230 [ 13.220218] kunit_try_run_case+0x1a5/0x480 [ 13.220244] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.220267] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 13.220293] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 13.220316] ? __kthread_parkme+0x82/0x180 [ 13.220338] ? preempt_count_sub+0x50/0x80 [ 13.220360] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.220385] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.220409] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.220434] kthread+0x337/0x6f0 [ 13.220453] ? trace_preempt_on+0x20/0xc0 [ 13.220476] ? __pfx_kthread+0x10/0x10 [ 13.220497] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.220517] ? calculate_sigpending+0x7b/0xa0 [ 13.220542] ? __pfx_kthread+0x10/0x10 [ 13.220563] ret_from_fork+0x116/0x1d0 [ 13.220581] ? __pfx_kthread+0x10/0x10 [ 13.220601] ret_from_fork_asm+0x1a/0x30 [ 13.220635] </TASK> [ 13.220644] [ 13.231581] Allocated by task 232: [ 13.232241] kasan_save_stack+0x45/0x70 [ 13.232443] kasan_save_track+0x18/0x40 [ 13.232585] kasan_save_alloc_info+0x3b/0x50 [ 13.232943] __kasan_slab_alloc+0x91/0xa0 [ 13.233292] kmem_cache_alloc_noprof+0x123/0x3f0 [ 13.233508] __kmem_cache_create_args+0x169/0x240 [ 13.233719] kmem_cache_double_destroy+0xd5/0x380 [ 13.234294] kunit_try_run_case+0x1a5/0x480 [ 13.234471] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.234954] kthread+0x337/0x6f0 [ 13.235204] ret_from_fork+0x116/0x1d0 [ 13.235360] ret_from_fork_asm+0x1a/0x30 [ 13.235569] [ 13.235663] Freed by task 232: [ 13.235793] kasan_save_stack+0x45/0x70 [ 13.236447] kasan_save_track+0x18/0x40 [ 13.236689] kasan_save_free_info+0x3f/0x60 [ 13.236951] __kasan_slab_free+0x56/0x70 [ 13.237446] kmem_cache_free+0x249/0x420 [ 13.237607] slab_kmem_cache_release+0x2e/0x40 [ 13.237988] kmem_cache_release+0x16/0x20 [ 13.238350] kobject_put+0x181/0x450 [ 13.238611] sysfs_slab_release+0x16/0x20 [ 13.238887] kmem_cache_destroy+0xf0/0x1d0 [ 13.239066] kmem_cache_double_destroy+0x14e/0x380 [ 13.239440] kunit_try_run_case+0x1a5/0x480 [ 13.239649] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.240202] kthread+0x337/0x6f0 [ 13.240348] ret_from_fork+0x116/0x1d0 [ 13.240661] ret_from_fork_asm+0x1a/0x30 [ 13.240898] [ 13.240983] The buggy address belongs to the object at ffff88810394a140 [ 13.240983] which belongs to the cache kmem_cache of size 208 [ 13.241789] The buggy address is located 0 bytes inside of [ 13.241789] freed 208-byte region [ffff88810394a140, ffff88810394a210) [ 13.242609] [ 13.242794] The buggy address belongs to the physical page: [ 13.243241] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10394a [ 13.243553] flags: 0x200000000000000(node=0|zone=2) [ 13.243964] page_type: f5(slab) [ 13.244308] raw: 0200000000000000 ffff888100041000 dead000000000122 0000000000000000 [ 13.244697] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 13.245171] page dumped because: kasan: bad access detected [ 13.245569] [ 13.245665] Memory state around the buggy address: [ 13.246180] ffff88810394a000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 13.246439] ffff88810394a080: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 13.246906] >ffff88810394a100: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 13.247323] ^ [ 13.247573] ffff88810394a180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 13.248127] ffff88810394a200: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.248410] ==================================================================