Date
July 23, 2025, 2:10 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 16.092266] ================================================================== [ 16.092334] BUG: KASAN: double-free in kmem_cache_double_free+0x190/0x3c8 [ 16.092404] Free of addr fff00000c3f85000 by task kunit_try_catch/209 [ 16.092450] [ 16.093217] CPU: 1 UID: 0 PID: 209 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc7 #1 PREEMPT [ 16.093624] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.093711] Hardware name: linux,dummy-virt (DT) [ 16.093817] Call trace: [ 16.093841] show_stack+0x20/0x38 (C) [ 16.093911] dump_stack_lvl+0x8c/0xd0 [ 16.093962] print_report+0x118/0x5d0 [ 16.094421] kasan_report_invalid_free+0xc0/0xe8 [ 16.094497] check_slab_allocation+0xd4/0x108 [ 16.094776] __kasan_slab_pre_free+0x2c/0x48 [ 16.095109] kmem_cache_free+0xf0/0x468 [ 16.095173] kmem_cache_double_free+0x190/0x3c8 [ 16.095361] kunit_try_run_case+0x170/0x3f0 [ 16.095555] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.096037] kthread+0x328/0x630 [ 16.096141] ret_from_fork+0x10/0x20 [ 16.096201] [ 16.096220] Allocated by task 209: [ 16.096434] kasan_save_stack+0x3c/0x68 [ 16.096744] kasan_save_track+0x20/0x40 [ 16.096842] kasan_save_alloc_info+0x40/0x58 [ 16.097231] __kasan_slab_alloc+0xa8/0xb0 [ 16.097442] kmem_cache_alloc_noprof+0x10c/0x398 [ 16.097868] kmem_cache_double_free+0x12c/0x3c8 [ 16.098372] kunit_try_run_case+0x170/0x3f0 [ 16.098542] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.098595] kthread+0x328/0x630 [ 16.098748] ret_from_fork+0x10/0x20 [ 16.098846] [ 16.098886] Freed by task 209: [ 16.098917] kasan_save_stack+0x3c/0x68 [ 16.099249] kasan_save_track+0x20/0x40 [ 16.099525] kasan_save_free_info+0x4c/0x78 [ 16.099726] __kasan_slab_free+0x6c/0x98 [ 16.099877] kmem_cache_free+0x260/0x468 [ 16.099915] kmem_cache_double_free+0x140/0x3c8 [ 16.100386] kunit_try_run_case+0x170/0x3f0 [ 16.100536] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.100829] kthread+0x328/0x630 [ 16.101233] ret_from_fork+0x10/0x20 [ 16.101454] [ 16.101479] The buggy address belongs to the object at fff00000c3f85000 [ 16.101479] which belongs to the cache test_cache of size 200 [ 16.101877] The buggy address is located 0 bytes inside of [ 16.101877] 200-byte region [fff00000c3f85000, fff00000c3f850c8) [ 16.102154] [ 16.102199] The buggy address belongs to the physical page: [ 16.102488] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103f85 [ 16.102878] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 16.102994] page_type: f5(slab) [ 16.103165] raw: 0bfffe0000000000 fff00000c3f17280 dead000000000122 0000000000000000 [ 16.103620] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 16.103955] page dumped because: kasan: bad access detected [ 16.103994] [ 16.104012] Memory state around the buggy address: [ 16.104271] fff00000c3f84f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 16.104550] fff00000c3f84f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 16.104861] >fff00000c3f85000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 16.105207] ^ [ 16.105249] fff00000c3f85080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 16.105467] fff00000c3f85100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.105886] ==================================================================
[ 13.281114] ================================================================== [ 13.281736] BUG: KASAN: double-free in kmem_cache_double_free+0x1e5/0x480 [ 13.282051] Free of addr ffff888102b0b000 by task kunit_try_catch/226 [ 13.283040] [ 13.283360] CPU: 0 UID: 0 PID: 226 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc7 #1 PREEMPT(voluntary) [ 13.283410] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.283422] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.283454] Call Trace: [ 13.283466] <TASK> [ 13.283483] dump_stack_lvl+0x73/0xb0 [ 13.283515] print_report+0xd1/0x610 [ 13.283537] ? __virt_addr_valid+0x1db/0x2d0 [ 13.283561] ? kasan_complete_mode_report_info+0x64/0x200 [ 13.283581] ? kmem_cache_double_free+0x1e5/0x480 [ 13.283606] kasan_report_invalid_free+0x10a/0x130 [ 13.283629] ? kmem_cache_double_free+0x1e5/0x480 [ 13.283654] ? kmem_cache_double_free+0x1e5/0x480 [ 13.283677] check_slab_allocation+0x101/0x130 [ 13.283697] __kasan_slab_pre_free+0x28/0x40 [ 13.283717] kmem_cache_free+0xed/0x420 [ 13.283737] ? kmem_cache_alloc_noprof+0x123/0x3f0 [ 13.283758] ? kmem_cache_double_free+0x1e5/0x480 [ 13.283784] kmem_cache_double_free+0x1e5/0x480 [ 13.283807] ? __pfx_kmem_cache_double_free+0x10/0x10 [ 13.283839] ? finish_task_switch.isra.0+0x153/0x700 [ 13.283860] ? __switch_to+0x47/0xf50 [ 13.283889] ? __pfx_read_tsc+0x10/0x10 [ 13.283908] ? ktime_get_ts64+0x86/0x230 [ 13.283932] kunit_try_run_case+0x1a5/0x480 [ 13.283956] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.283978] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 13.284001] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 13.284023] ? __kthread_parkme+0x82/0x180 [ 13.284043] ? preempt_count_sub+0x50/0x80 [ 13.284065] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.284088] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.284110] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.284132] kthread+0x337/0x6f0 [ 13.284150] ? trace_preempt_on+0x20/0xc0 [ 13.284173] ? __pfx_kthread+0x10/0x10 [ 13.284193] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.284280] ? calculate_sigpending+0x7b/0xa0 [ 13.284304] ? __pfx_kthread+0x10/0x10 [ 13.284324] ret_from_fork+0x116/0x1d0 [ 13.284342] ? __pfx_kthread+0x10/0x10 [ 13.284362] ret_from_fork_asm+0x1a/0x30 [ 13.284392] </TASK> [ 13.284401] [ 13.295392] Allocated by task 226: [ 13.295886] kasan_save_stack+0x45/0x70 [ 13.296554] kasan_save_track+0x18/0x40 [ 13.296759] kasan_save_alloc_info+0x3b/0x50 [ 13.297065] __kasan_slab_alloc+0x91/0xa0 [ 13.297398] kmem_cache_alloc_noprof+0x123/0x3f0 [ 13.297733] kmem_cache_double_free+0x14f/0x480 [ 13.297958] kunit_try_run_case+0x1a5/0x480 [ 13.298169] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.298678] kthread+0x337/0x6f0 [ 13.298966] ret_from_fork+0x116/0x1d0 [ 13.299343] ret_from_fork_asm+0x1a/0x30 [ 13.299665] [ 13.299768] Freed by task 226: [ 13.300096] kasan_save_stack+0x45/0x70 [ 13.300476] kasan_save_track+0x18/0x40 [ 13.300677] kasan_save_free_info+0x3f/0x60 [ 13.300903] __kasan_slab_free+0x56/0x70 [ 13.301572] kmem_cache_free+0x249/0x420 [ 13.301766] kmem_cache_double_free+0x16a/0x480 [ 13.302062] kunit_try_run_case+0x1a5/0x480 [ 13.302393] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.302860] kthread+0x337/0x6f0 [ 13.303045] ret_from_fork+0x116/0x1d0 [ 13.303425] ret_from_fork_asm+0x1a/0x30 [ 13.303805] [ 13.303926] The buggy address belongs to the object at ffff888102b0b000 [ 13.303926] which belongs to the cache test_cache of size 200 [ 13.304631] The buggy address is located 0 bytes inside of [ 13.304631] 200-byte region [ffff888102b0b000, ffff888102b0b0c8) [ 13.305500] [ 13.305609] The buggy address belongs to the physical page: [ 13.305827] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102b0b [ 13.306623] flags: 0x200000000000000(node=0|zone=2) [ 13.306844] page_type: f5(slab) [ 13.307349] raw: 0200000000000000 ffff888101a35a00 dead000000000122 0000000000000000 [ 13.307949] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 13.308587] page dumped because: kasan: bad access detected [ 13.308859] [ 13.308955] Memory state around the buggy address: [ 13.309391] ffff888102b0af00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.309897] ffff888102b0af80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.310460] >ffff888102b0b000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 13.310839] ^ [ 13.310991] ffff888102b0b080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 13.311652] ffff888102b0b100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.311951] ==================================================================