Date
July 19, 2025, 11:12 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 16.682539] ================================================================== [ 16.682617] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x174/0x300 [ 16.682701] Read of size 1 at addr fff00000c5b33a00 by task kunit_try_catch/215 [ 16.682753] [ 16.682796] CPU: 1 UID: 0 PID: 215 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT [ 16.682882] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.682910] Hardware name: linux,dummy-virt (DT) [ 16.682944] Call trace: [ 16.682969] show_stack+0x20/0x38 (C) [ 16.683022] dump_stack_lvl+0x8c/0xd0 [ 16.683074] print_report+0x118/0x5d0 [ 16.683122] kasan_report+0xdc/0x128 [ 16.683168] __kasan_check_byte+0x54/0x70 [ 16.683216] kmem_cache_destroy+0x34/0x218 [ 16.683266] kmem_cache_double_destroy+0x174/0x300 [ 16.683316] kunit_try_run_case+0x170/0x3f0 [ 16.683366] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.683419] kthread+0x328/0x630 [ 16.683463] ret_from_fork+0x10/0x20 [ 16.683512] [ 16.683531] Allocated by task 215: [ 16.683562] kasan_save_stack+0x3c/0x68 [ 16.683603] kasan_save_track+0x20/0x40 [ 16.683642] kasan_save_alloc_info+0x40/0x58 [ 16.683683] __kasan_slab_alloc+0xa8/0xb0 [ 16.683730] kmem_cache_alloc_noprof+0x10c/0x398 [ 16.683773] __kmem_cache_create_args+0x178/0x280 [ 16.683813] kmem_cache_double_destroy+0xc0/0x300 [ 16.683882] kunit_try_run_case+0x170/0x3f0 [ 16.683922] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.683965] kthread+0x328/0x630 [ 16.683999] ret_from_fork+0x10/0x20 [ 16.684045] [ 16.684064] Freed by task 215: [ 16.684091] kasan_save_stack+0x3c/0x68 [ 16.684129] kasan_save_track+0x20/0x40 [ 16.684166] kasan_save_free_info+0x4c/0x78 [ 16.684207] __kasan_slab_free+0x6c/0x98 [ 16.684243] kmem_cache_free+0x260/0x468 [ 16.684279] slab_kmem_cache_release+0x38/0x50 [ 16.684318] kmem_cache_release+0x1c/0x30 [ 16.684353] kobject_put+0x17c/0x420 [ 16.684389] sysfs_slab_release+0x1c/0x30 [ 16.684425] kmem_cache_destroy+0x118/0x218 [ 16.684463] kmem_cache_double_destroy+0x128/0x300 [ 16.684503] kunit_try_run_case+0x170/0x3f0 [ 16.684540] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.684583] kthread+0x328/0x630 [ 16.684614] ret_from_fork+0x10/0x20 [ 16.684650] [ 16.684668] The buggy address belongs to the object at fff00000c5b33a00 [ 16.684668] which belongs to the cache kmem_cache of size 208 [ 16.684739] The buggy address is located 0 bytes inside of [ 16.684739] freed 208-byte region [fff00000c5b33a00, fff00000c5b33ad0) [ 16.684803] [ 16.684826] The buggy address belongs to the physical page: [ 16.684858] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105b33 [ 16.684914] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 16.684966] page_type: f5(slab) [ 16.685008] raw: 0bfffe0000000000 fff00000c0001000 dead000000000122 0000000000000000 [ 16.685057] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 16.685101] page dumped because: kasan: bad access detected [ 16.685133] [ 16.685151] Memory state around the buggy address: [ 16.685185] fff00000c5b33900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 16.685228] fff00000c5b33980: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.685270] >fff00000c5b33a00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 16.685309] ^ [ 16.685336] fff00000c5b33a80: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 16.685379] fff00000c5b33b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.685417] ==================================================================
[ 12.852262] ================================================================== [ 12.852830] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x1bf/0x380 [ 12.853168] Read of size 1 at addr ffff888101da2dc0 by task kunit_try_catch/232 [ 12.853497] [ 12.853656] CPU: 1 UID: 0 PID: 232 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 12.853704] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.853715] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.853737] Call Trace: [ 12.853750] <TASK> [ 12.853767] dump_stack_lvl+0x73/0xb0 [ 12.853796] print_report+0xd1/0x610 [ 12.853818] ? __virt_addr_valid+0x1db/0x2d0 [ 12.853841] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.853863] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.853884] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.853908] kasan_report+0x141/0x180 [ 12.853929] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.853955] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.853979] __kasan_check_byte+0x3d/0x50 [ 12.853999] kmem_cache_destroy+0x25/0x1d0 [ 12.854034] kmem_cache_double_destroy+0x1bf/0x380 [ 12.854057] ? __pfx_kmem_cache_double_destroy+0x10/0x10 [ 12.854081] ? finish_task_switch.isra.0+0x153/0x700 [ 12.854104] ? __switch_to+0x47/0xf50 [ 12.854132] ? __pfx_read_tsc+0x10/0x10 [ 12.854156] ? ktime_get_ts64+0x86/0x230 [ 12.854180] kunit_try_run_case+0x1a5/0x480 [ 12.854205] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.854226] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.854250] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.854271] ? __kthread_parkme+0x82/0x180 [ 12.854292] ? preempt_count_sub+0x50/0x80 [ 12.854315] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.854338] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.854361] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.854384] kthread+0x337/0x6f0 [ 12.854403] ? trace_preempt_on+0x20/0xc0 [ 12.854425] ? __pfx_kthread+0x10/0x10 [ 12.854445] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.854466] ? calculate_sigpending+0x7b/0xa0 [ 12.854489] ? __pfx_kthread+0x10/0x10 [ 12.854684] ret_from_fork+0x116/0x1d0 [ 12.854706] ? __pfx_kthread+0x10/0x10 [ 12.854727] ret_from_fork_asm+0x1a/0x30 [ 12.854758] </TASK> [ 12.854769] [ 12.865183] Allocated by task 232: [ 12.865324] kasan_save_stack+0x45/0x70 [ 12.866073] kasan_save_track+0x18/0x40 [ 12.866260] kasan_save_alloc_info+0x3b/0x50 [ 12.866412] __kasan_slab_alloc+0x91/0xa0 [ 12.866751] kmem_cache_alloc_noprof+0x123/0x3f0 [ 12.866979] __kmem_cache_create_args+0x169/0x240 [ 12.867215] kmem_cache_double_destroy+0xd5/0x380 [ 12.867435] kunit_try_run_case+0x1a5/0x480 [ 12.868001] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.868244] kthread+0x337/0x6f0 [ 12.868685] ret_from_fork+0x116/0x1d0 [ 12.868847] ret_from_fork_asm+0x1a/0x30 [ 12.869067] [ 12.869164] Freed by task 232: [ 12.869322] kasan_save_stack+0x45/0x70 [ 12.869480] kasan_save_track+0x18/0x40 [ 12.869668] kasan_save_free_info+0x3f/0x60 [ 12.869868] __kasan_slab_free+0x56/0x70 [ 12.870080] kmem_cache_free+0x249/0x420 [ 12.870230] slab_kmem_cache_release+0x2e/0x40 [ 12.871045] kmem_cache_release+0x16/0x20 [ 12.871550] kobject_put+0x181/0x450 [ 12.871687] sysfs_slab_release+0x16/0x20 [ 12.871828] kmem_cache_destroy+0xf0/0x1d0 [ 12.871970] kmem_cache_double_destroy+0x14e/0x380 [ 12.872549] kunit_try_run_case+0x1a5/0x480 [ 12.872859] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.873289] kthread+0x337/0x6f0 [ 12.873711] ret_from_fork+0x116/0x1d0 [ 12.874067] ret_from_fork_asm+0x1a/0x30 [ 12.874214] [ 12.874292] The buggy address belongs to the object at ffff888101da2dc0 [ 12.874292] which belongs to the cache kmem_cache of size 208 [ 12.875664] The buggy address is located 0 bytes inside of [ 12.875664] freed 208-byte region [ffff888101da2dc0, ffff888101da2e90) [ 12.876611] [ 12.876694] The buggy address belongs to the physical page: [ 12.876870] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101da2 [ 12.877135] flags: 0x200000000000000(node=0|zone=2) [ 12.877300] page_type: f5(slab) [ 12.877712] raw: 0200000000000000 ffff888100041000 dead000000000122 0000000000000000 [ 12.878570] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 12.879258] page dumped because: kasan: bad access detected [ 12.879943] [ 12.880117] Memory state around the buggy address: [ 12.880666] ffff888101da2c80: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.881236] ffff888101da2d00: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 12.881774] >ffff888101da2d80: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 12.882221] ^ [ 12.882530] ffff888101da2e00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.883506] ffff888101da2e80: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.884109] ==================================================================