Date
July 3, 2025, 6:13 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 18.155181] ================================================================== [ 18.155267] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x174/0x300 [ 18.155343] Read of size 1 at addr fff00000c57be3c0 by task kunit_try_catch/215 [ 18.155394] [ 18.155437] CPU: 1 UID: 0 PID: 215 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT [ 18.155522] Tainted: [B]=BAD_PAGE, [N]=TEST [ 18.155550] Hardware name: linux,dummy-virt (DT) [ 18.155585] Call trace: [ 18.155610] show_stack+0x20/0x38 (C) [ 18.155663] dump_stack_lvl+0x8c/0xd0 [ 18.155713] print_report+0x118/0x608 [ 18.155758] kasan_report+0xdc/0x128 [ 18.155803] __kasan_check_byte+0x54/0x70 [ 18.155848] kmem_cache_destroy+0x34/0x218 [ 18.155894] kmem_cache_double_destroy+0x174/0x300 [ 18.155943] kunit_try_run_case+0x170/0x3f0 [ 18.155991] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.156056] kthread+0x328/0x630 [ 18.156100] ret_from_fork+0x10/0x20 [ 18.156148] [ 18.156166] Allocated by task 215: [ 18.156197] kasan_save_stack+0x3c/0x68 [ 18.156239] kasan_save_track+0x20/0x40 [ 18.156279] kasan_save_alloc_info+0x40/0x58 [ 18.156319] __kasan_slab_alloc+0xa8/0xb0 [ 18.156356] kmem_cache_alloc_noprof+0x10c/0x398 [ 18.156397] __kmem_cache_create_args+0x178/0x280 [ 18.156435] kmem_cache_double_destroy+0xc0/0x300 [ 18.156482] kunit_try_run_case+0x170/0x3f0 [ 18.156518] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.156565] kthread+0x328/0x630 [ 18.156596] ret_from_fork+0x10/0x20 [ 18.156632] [ 18.156651] Freed by task 215: [ 18.156677] kasan_save_stack+0x3c/0x68 [ 18.156714] kasan_save_track+0x20/0x40 [ 18.156750] kasan_save_free_info+0x4c/0x78 [ 18.156790] __kasan_slab_free+0x6c/0x98 [ 18.156827] kmem_cache_free+0x260/0x468 [ 18.156864] slab_kmem_cache_release+0x38/0x50 [ 18.156903] kmem_cache_release+0x1c/0x30 [ 18.156938] kobject_put+0x17c/0x420 [ 18.156974] sysfs_slab_release+0x1c/0x30 [ 18.157010] kmem_cache_destroy+0x118/0x218 [ 18.157056] kmem_cache_double_destroy+0x128/0x300 [ 18.157097] kunit_try_run_case+0x170/0x3f0 [ 18.157133] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.157176] kthread+0x328/0x630 [ 18.157207] ret_from_fork+0x10/0x20 [ 18.157242] [ 18.157262] The buggy address belongs to the object at fff00000c57be3c0 [ 18.157262] which belongs to the cache kmem_cache of size 208 [ 18.157318] The buggy address is located 0 bytes inside of [ 18.157318] freed 208-byte region [fff00000c57be3c0, fff00000c57be490) [ 18.157377] [ 18.157399] The buggy address belongs to the physical page: [ 18.157432] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1057be [ 18.157487] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 18.157538] page_type: f5(slab) [ 18.157581] raw: 0bfffe0000000000 fff00000c0001000 dead000000000122 0000000000000000 [ 18.157630] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 18.157674] page dumped because: kasan: bad access detected [ 18.157705] [ 18.157724] Memory state around the buggy address: [ 18.157757] fff00000c57be280: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 18.157799] fff00000c57be300: 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc [ 18.157843] >fff00000c57be380: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 18.157881] ^ [ 18.157916] fff00000c57be400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 18.157959] fff00000c57be480: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.157998] ==================================================================
[ 12.267715] ================================================================== [ 12.268135] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x1bf/0x380 [ 12.268445] Read of size 1 at addr ffff888101675640 by task kunit_try_catch/233 [ 12.268746] [ 12.268865] CPU: 0 UID: 0 PID: 233 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 12.268909] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.268921] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.268942] Call Trace: [ 12.268955] <TASK> [ 12.268972] dump_stack_lvl+0x73/0xb0 [ 12.269001] print_report+0xd1/0x650 [ 12.269023] ? __virt_addr_valid+0x1db/0x2d0 [ 12.269047] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.269071] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.269093] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.269130] kasan_report+0x141/0x180 [ 12.269151] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.269192] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.269216] __kasan_check_byte+0x3d/0x50 [ 12.269252] kmem_cache_destroy+0x25/0x1d0 [ 12.269275] kmem_cache_double_destroy+0x1bf/0x380 [ 12.269299] ? __pfx_kmem_cache_double_destroy+0x10/0x10 [ 12.269322] ? finish_task_switch.isra.0+0x153/0x700 [ 12.269344] ? __switch_to+0x47/0xf50 [ 12.269373] ? __pfx_read_tsc+0x10/0x10 [ 12.269404] ? ktime_get_ts64+0x86/0x230 [ 12.269429] kunit_try_run_case+0x1a5/0x480 [ 12.269453] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.269475] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.269498] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.269520] ? __kthread_parkme+0x82/0x180 [ 12.269541] ? preempt_count_sub+0x50/0x80 [ 12.269563] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.269597] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.269620] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.269653] kthread+0x337/0x6f0 [ 12.269673] ? trace_preempt_on+0x20/0xc0 [ 12.269695] ? __pfx_kthread+0x10/0x10 [ 12.269725] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.269745] ? calculate_sigpending+0x7b/0xa0 [ 12.269770] ? __pfx_kthread+0x10/0x10 [ 12.269800] ret_from_fork+0x116/0x1d0 [ 12.269819] ? __pfx_kthread+0x10/0x10 [ 12.269838] ret_from_fork_asm+0x1a/0x30 [ 12.269868] </TASK> [ 12.269880] [ 12.279943] Allocated by task 233: [ 12.280123] kasan_save_stack+0x45/0x70 [ 12.280775] kasan_save_track+0x18/0x40 [ 12.281121] kasan_save_alloc_info+0x3b/0x50 [ 12.281402] __kasan_slab_alloc+0x91/0xa0 [ 12.281594] kmem_cache_alloc_noprof+0x123/0x3f0 [ 12.281800] __kmem_cache_create_args+0x169/0x240 [ 12.282012] kmem_cache_double_destroy+0xd5/0x380 [ 12.282331] kunit_try_run_case+0x1a5/0x480 [ 12.282532] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.282765] kthread+0x337/0x6f0 [ 12.282921] ret_from_fork+0x116/0x1d0 [ 12.283091] ret_from_fork_asm+0x1a/0x30 [ 12.283253] [ 12.283326] Freed by task 233: [ 12.283441] kasan_save_stack+0x45/0x70 [ 12.283578] kasan_save_track+0x18/0x40 [ 12.283848] kasan_save_free_info+0x3f/0x60 [ 12.284055] __kasan_slab_free+0x56/0x70 [ 12.284467] kmem_cache_free+0x249/0x420 [ 12.284671] slab_kmem_cache_release+0x2e/0x40 [ 12.284893] kmem_cache_release+0x16/0x20 [ 12.285039] kobject_put+0x181/0x450 [ 12.285335] sysfs_slab_release+0x16/0x20 [ 12.285572] kmem_cache_destroy+0xf0/0x1d0 [ 12.285808] kmem_cache_double_destroy+0x14e/0x380 [ 12.286033] kunit_try_run_case+0x1a5/0x480 [ 12.286243] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.286547] kthread+0x337/0x6f0 [ 12.286679] ret_from_fork+0x116/0x1d0 [ 12.287043] ret_from_fork_asm+0x1a/0x30 [ 12.287925] [ 12.288027] The buggy address belongs to the object at ffff888101675640 [ 12.288027] which belongs to the cache kmem_cache of size 208 [ 12.288868] The buggy address is located 0 bytes inside of [ 12.288868] freed 208-byte region [ffff888101675640, ffff888101675710) [ 12.289622] [ 12.289740] The buggy address belongs to the physical page: [ 12.289982] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101675 [ 12.290636] flags: 0x200000000000000(node=0|zone=2) [ 12.291136] page_type: f5(slab) [ 12.291556] raw: 0200000000000000 ffff888100041000 dead000000000122 0000000000000000 [ 12.291891] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 12.292662] page dumped because: kasan: bad access detected [ 12.292928] [ 12.293021] Memory state around the buggy address: [ 12.293599] ffff888101675500: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.294208] ffff888101675580: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 12.294699] >ffff888101675600: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 12.294989] ^ [ 12.295615] ffff888101675680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.296029] ffff888101675700: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.296607] ==================================================================