Date
June 7, 2025, 10:40 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 23.576325] ================================================================== [ 23.576555] BUG: KASAN: double-free in kmem_cache_double_free+0x190/0x3c8 [ 23.576758] Free of addr fff00000c7770000 by task kunit_try_catch/213 [ 23.576868] [ 23.576968] CPU: 1 UID: 0 PID: 213 Comm: kunit_try_catch Tainted: G B N 6.15.2-rc1 #1 PREEMPT [ 23.577388] Tainted: [B]=BAD_PAGE, [N]=TEST [ 23.577501] Hardware name: linux,dummy-virt (DT) [ 23.577593] Call trace: [ 23.577662] show_stack+0x20/0x38 (C) [ 23.577807] dump_stack_lvl+0x8c/0xd0 [ 23.577983] print_report+0x118/0x608 [ 23.578108] kasan_report_invalid_free+0xc0/0xe8 [ 23.578231] check_slab_allocation+0xd4/0x108 [ 23.578651] __kasan_slab_pre_free+0x2c/0x48 [ 23.578829] kmem_cache_free+0xf0/0x468 [ 23.579005] kmem_cache_double_free+0x190/0x3c8 [ 23.579156] kunit_try_run_case+0x170/0x3f0 [ 23.579437] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 23.579576] kthread+0x328/0x630 [ 23.579670] ret_from_fork+0x10/0x20 [ 23.580022] [ 23.580073] Allocated by task 213: [ 23.580161] kasan_save_stack+0x3c/0x68 [ 23.580273] kasan_save_track+0x20/0x40 [ 23.580366] kasan_save_alloc_info+0x40/0x58 [ 23.580477] __kasan_slab_alloc+0xa8/0xb0 [ 23.580569] kmem_cache_alloc_noprof+0x10c/0x398 [ 23.580667] kmem_cache_double_free+0x12c/0x3c8 [ 23.581121] kunit_try_run_case+0x170/0x3f0 [ 23.581310] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 23.581442] kthread+0x328/0x630 [ 23.581716] ret_from_fork+0x10/0x20 [ 23.582030] [ 23.582095] Freed by task 213: [ 23.582233] kasan_save_stack+0x3c/0x68 [ 23.582361] kasan_save_track+0x20/0x40 [ 23.582459] kasan_save_free_info+0x4c/0x78 [ 23.582559] __kasan_slab_free+0x6c/0x98 [ 23.582648] kmem_cache_free+0x260/0x468 [ 23.582777] kmem_cache_double_free+0x140/0x3c8 [ 23.583027] kunit_try_run_case+0x170/0x3f0 [ 23.583265] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 23.583390] kthread+0x328/0x630 [ 23.583477] ret_from_fork+0x10/0x20 [ 23.583551] [ 23.583594] The buggy address belongs to the object at fff00000c7770000 [ 23.583594] which belongs to the cache test_cache of size 200 [ 23.583715] The buggy address is located 0 bytes inside of [ 23.583715] 200-byte region [fff00000c7770000, fff00000c77700c8) [ 23.583837] [ 23.583887] The buggy address belongs to the physical page: [ 23.584189] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x107770 [ 23.584669] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 23.584860] page_type: f5(slab) [ 23.585174] raw: 0bfffe0000000000 fff00000c56b5280 dead000000000122 0000000000000000 [ 23.585392] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 23.585521] page dumped because: kasan: bad access detected [ 23.585620] [ 23.586382] Memory state around the buggy address: [ 23.586526] fff00000c776ff00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 23.587063] fff00000c776ff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 23.587355] >fff00000c7770000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 23.587469] ^ [ 23.587671] fff00000c7770080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 23.587868] fff00000c7770100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 23.588528] ==================================================================
[ 14.594658] ================================================================== [ 14.596062] BUG: KASAN: double-free in kmem_cache_double_free+0x1e5/0x480 [ 14.597243] Free of addr ffff8881033ac000 by task kunit_try_catch/229 [ 14.598031] [ 14.598191] CPU: 0 UID: 0 PID: 229 Comm: kunit_try_catch Tainted: G B N 6.15.2-rc1 #1 PREEMPT(voluntary) [ 14.598285] Tainted: [B]=BAD_PAGE, [N]=TEST [ 14.598305] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 14.598340] Call Trace: [ 14.598364] <TASK> [ 14.598397] dump_stack_lvl+0x73/0xb0 [ 14.598452] print_report+0xd1/0x650 [ 14.598479] ? __virt_addr_valid+0x1db/0x2d0 [ 14.598503] ? kasan_complete_mode_report_info+0x64/0x200 [ 14.598527] ? kmem_cache_double_free+0x1e5/0x480 [ 14.598549] kasan_report_invalid_free+0x10a/0x130 [ 14.598601] ? kmem_cache_double_free+0x1e5/0x480 [ 14.598638] ? kmem_cache_double_free+0x1e5/0x480 [ 14.598673] check_slab_allocation+0x101/0x130 [ 14.598708] __kasan_slab_pre_free+0x28/0x40 [ 14.598743] kmem_cache_free+0xed/0x420 [ 14.598779] ? kmem_cache_alloc_noprof+0x123/0x3f0 [ 14.598812] ? kmem_cache_double_free+0x1e5/0x480 [ 14.598849] kmem_cache_double_free+0x1e5/0x480 [ 14.598882] ? __pfx_kmem_cache_double_free+0x10/0x10 [ 14.598917] ? finish_task_switch.isra.0+0x153/0x700 [ 14.598960] ? __switch_to+0x5d9/0xf60 [ 14.598997] ? dequeue_task_fair+0x166/0x4e0 [ 14.599082] ? __pfx_read_tsc+0x10/0x10 [ 14.599117] ? ktime_get_ts64+0x86/0x230 [ 14.599180] kunit_try_run_case+0x1a5/0x480 [ 14.599234] ? __pfx_kunit_try_run_case+0x10/0x10 [ 14.599282] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 14.599326] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 14.599367] ? __kthread_parkme+0x82/0x180 [ 14.599446] ? preempt_count_sub+0x50/0x80 [ 14.599513] ? __pfx_kunit_try_run_case+0x10/0x10 [ 14.599552] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 14.599594] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 14.599626] kthread+0x337/0x6f0 [ 14.599654] ? trace_preempt_on+0x20/0xc0 [ 14.599690] ? __pfx_kthread+0x10/0x10 [ 14.599716] ? _raw_spin_unlock_irq+0x47/0x80 [ 14.599749] ? calculate_sigpending+0x7b/0xa0 [ 14.599782] ? __pfx_kthread+0x10/0x10 [ 14.599812] ret_from_fork+0x41/0x80 [ 14.599845] ? __pfx_kthread+0x10/0x10 [ 14.599870] ret_from_fork_asm+0x1a/0x30 [ 14.599901] </TASK> [ 14.599915] [ 14.610226] Allocated by task 229: [ 14.610512] kasan_save_stack+0x45/0x70 [ 14.611036] kasan_save_track+0x18/0x40 [ 14.611364] kasan_save_alloc_info+0x3b/0x50 [ 14.611777] __kasan_slab_alloc+0x91/0xa0 [ 14.612156] kmem_cache_alloc_noprof+0x123/0x3f0 [ 14.612547] kmem_cache_double_free+0x14f/0x480 [ 14.613027] kunit_try_run_case+0x1a5/0x480 [ 14.613391] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 14.613895] kthread+0x337/0x6f0 [ 14.614377] ret_from_fork+0x41/0x80 [ 14.614748] ret_from_fork_asm+0x1a/0x30 [ 14.615183] [ 14.615342] Freed by task 229: [ 14.615637] kasan_save_stack+0x45/0x70 [ 14.616004] kasan_save_track+0x18/0x40 [ 14.616186] kasan_save_free_info+0x3f/0x60 [ 14.616364] __kasan_slab_free+0x56/0x70 [ 14.616576] kmem_cache_free+0x249/0x420 [ 14.616788] kmem_cache_double_free+0x16a/0x480 [ 14.616999] kunit_try_run_case+0x1a5/0x480 [ 14.617209] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 14.617429] kthread+0x337/0x6f0 [ 14.617698] ret_from_fork+0x41/0x80 [ 14.618142] ret_from_fork_asm+0x1a/0x30 [ 14.618593] [ 14.618808] The buggy address belongs to the object at ffff8881033ac000 [ 14.618808] which belongs to the cache test_cache of size 200 [ 14.619855] The buggy address is located 0 bytes inside of [ 14.619855] 200-byte region [ffff8881033ac000, ffff8881033ac0c8) [ 14.620771] [ 14.620983] The buggy address belongs to the physical page: [ 14.621521] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1033ac [ 14.622244] flags: 0x200000000000000(node=0|zone=2) [ 14.622828] page_type: f5(slab) [ 14.623193] raw: 0200000000000000 ffff8881033a9000 dead000000000122 0000000000000000 [ 14.623863] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 14.624976] page dumped because: kasan: bad access detected [ 14.625323] [ 14.625425] Memory state around the buggy address: [ 14.626083] ffff8881033abf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 14.626537] ffff8881033abf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 14.627000] >ffff8881033ac000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 14.627465] ^ [ 14.627744] ffff8881033ac080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 14.628526] ffff8881033ac100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 14.629369] ==================================================================