Date
July 6, 2025, 11:09 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 18.822782] ================================================================== [ 18.822858] BUG: KASAN: double-free in kmem_cache_double_free+0x190/0x3c8 [ 18.822929] Free of addr fff00000c56f3000 by task kunit_try_catch/209 [ 18.823281] [ 18.823381] CPU: 1 UID: 0 PID: 209 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT [ 18.823467] Tainted: [B]=BAD_PAGE, [N]=TEST [ 18.823559] Hardware name: linux,dummy-virt (DT) [ 18.823658] Call trace: [ 18.823779] show_stack+0x20/0x38 (C) [ 18.823835] dump_stack_lvl+0x8c/0xd0 [ 18.823885] print_report+0x118/0x608 [ 18.824350] kasan_report_invalid_free+0xc0/0xe8 [ 18.824413] check_slab_allocation+0xd4/0x108 [ 18.824621] __kasan_slab_pre_free+0x2c/0x48 [ 18.824720] kmem_cache_free+0xf0/0x468 [ 18.824812] kmem_cache_double_free+0x190/0x3c8 [ 18.824862] kunit_try_run_case+0x170/0x3f0 [ 18.824911] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.824967] kthread+0x328/0x630 [ 18.825018] ret_from_fork+0x10/0x20 [ 18.825069] [ 18.825354] Allocated by task 209: [ 18.825416] kasan_save_stack+0x3c/0x68 [ 18.825500] kasan_save_track+0x20/0x40 [ 18.825584] kasan_save_alloc_info+0x40/0x58 [ 18.825624] __kasan_slab_alloc+0xa8/0xb0 [ 18.825877] kmem_cache_alloc_noprof+0x10c/0x398 [ 18.825928] kmem_cache_double_free+0x12c/0x3c8 [ 18.825966] kunit_try_run_case+0x170/0x3f0 [ 18.826004] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.826069] kthread+0x328/0x630 [ 18.826105] ret_from_fork+0x10/0x20 [ 18.826141] [ 18.826161] Freed by task 209: [ 18.826189] kasan_save_stack+0x3c/0x68 [ 18.826587] kasan_save_track+0x20/0x40 [ 18.826675] kasan_save_free_info+0x4c/0x78 [ 18.826722] __kasan_slab_free+0x6c/0x98 [ 18.826757] kmem_cache_free+0x260/0x468 [ 18.827067] kmem_cache_double_free+0x140/0x3c8 [ 18.827216] kunit_try_run_case+0x170/0x3f0 [ 18.827315] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.827362] kthread+0x328/0x630 [ 18.827395] ret_from_fork+0x10/0x20 [ 18.827430] [ 18.827449] The buggy address belongs to the object at fff00000c56f3000 [ 18.827449] which belongs to the cache test_cache of size 200 [ 18.827533] The buggy address is located 0 bytes inside of [ 18.827533] 200-byte region [fff00000c56f3000, fff00000c56f30c8) [ 18.827592] [ 18.827614] The buggy address belongs to the physical page: [ 18.827647] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1056f3 [ 18.827917] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 18.828003] page_type: f5(slab) [ 18.828464] raw: 0bfffe0000000000 fff00000c1b58780 dead000000000122 0000000000000000 [ 18.828586] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 18.828653] page dumped because: kasan: bad access detected [ 18.828685] [ 18.828919] Memory state around the buggy address: [ 18.828995] fff00000c56f2f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.829042] fff00000c56f2f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.829085] >fff00000c56f3000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 18.829123] ^ [ 18.829311] fff00000c56f3080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 18.829442] fff00000c56f3100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.829567] ==================================================================
[ 12.312743] ================================================================== [ 12.314561] BUG: KASAN: double-free in kmem_cache_double_free+0x1e5/0x480 [ 12.315496] Free of addr ffff888103a0a000 by task kunit_try_catch/226 [ 12.315989] [ 12.316397] CPU: 0 UID: 0 PID: 226 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 12.316450] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.316612] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.316638] Call Trace: [ 12.316652] <TASK> [ 12.316670] dump_stack_lvl+0x73/0xb0 [ 12.316703] print_report+0xd1/0x650 [ 12.316726] ? __virt_addr_valid+0x1db/0x2d0 [ 12.316751] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.316773] ? kmem_cache_double_free+0x1e5/0x480 [ 12.316798] kasan_report_invalid_free+0x10a/0x130 [ 12.316822] ? kmem_cache_double_free+0x1e5/0x480 [ 12.316847] ? kmem_cache_double_free+0x1e5/0x480 [ 12.316870] check_slab_allocation+0x101/0x130 [ 12.316892] __kasan_slab_pre_free+0x28/0x40 [ 12.316912] kmem_cache_free+0xed/0x420 [ 12.316946] ? kmem_cache_alloc_noprof+0x123/0x3f0 [ 12.316966] ? kmem_cache_double_free+0x1e5/0x480 [ 12.316993] kmem_cache_double_free+0x1e5/0x480 [ 12.317016] ? __pfx_kmem_cache_double_free+0x10/0x10 [ 12.317039] ? finish_task_switch.isra.0+0x153/0x700 [ 12.317070] ? __switch_to+0x47/0xf50 [ 12.317099] ? __pfx_read_tsc+0x10/0x10 [ 12.317120] ? ktime_get_ts64+0x86/0x230 [ 12.317145] kunit_try_run_case+0x1a5/0x480 [ 12.317169] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.317191] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.317215] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.317237] ? __kthread_parkme+0x82/0x180 [ 12.317258] ? preempt_count_sub+0x50/0x80 [ 12.317281] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.317303] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.317325] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.317347] kthread+0x337/0x6f0 [ 12.317366] ? trace_preempt_on+0x20/0xc0 [ 12.317389] ? __pfx_kthread+0x10/0x10 [ 12.317410] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.317430] ? calculate_sigpending+0x7b/0xa0 [ 12.317453] ? __pfx_kthread+0x10/0x10 [ 12.317495] ret_from_fork+0x116/0x1d0 [ 12.317513] ? __pfx_kthread+0x10/0x10 [ 12.317533] ret_from_fork_asm+0x1a/0x30 [ 12.317564] </TASK> [ 12.317575] [ 12.328668] Allocated by task 226: [ 12.328865] kasan_save_stack+0x45/0x70 [ 12.329071] kasan_save_track+0x18/0x40 [ 12.329656] kasan_save_alloc_info+0x3b/0x50 [ 12.329836] __kasan_slab_alloc+0x91/0xa0 [ 12.330238] kmem_cache_alloc_noprof+0x123/0x3f0 [ 12.330639] kmem_cache_double_free+0x14f/0x480 [ 12.330828] kunit_try_run_case+0x1a5/0x480 [ 12.331204] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.331606] kthread+0x337/0x6f0 [ 12.331738] ret_from_fork+0x116/0x1d0 [ 12.332079] ret_from_fork_asm+0x1a/0x30 [ 12.332347] [ 12.332444] Freed by task 226: [ 12.332581] kasan_save_stack+0x45/0x70 [ 12.333040] kasan_save_track+0x18/0x40 [ 12.333254] kasan_save_free_info+0x3f/0x60 [ 12.333441] __kasan_slab_free+0x56/0x70 [ 12.333850] kmem_cache_free+0x249/0x420 [ 12.334299] kmem_cache_double_free+0x16a/0x480 [ 12.334463] kunit_try_run_case+0x1a5/0x480 [ 12.334797] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.335027] kthread+0x337/0x6f0 [ 12.335196] ret_from_fork+0x116/0x1d0 [ 12.335515] ret_from_fork_asm+0x1a/0x30 [ 12.335683] [ 12.335784] The buggy address belongs to the object at ffff888103a0a000 [ 12.335784] which belongs to the cache test_cache of size 200 [ 12.336292] The buggy address is located 0 bytes inside of [ 12.336292] 200-byte region [ffff888103a0a000, ffff888103a0a0c8) [ 12.336682] [ 12.336786] The buggy address belongs to the physical page: [ 12.336993] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103a0a [ 12.337720] flags: 0x200000000000000(node=0|zone=2) [ 12.337948] page_type: f5(slab) [ 12.338145] raw: 0200000000000000 ffff888101dc23c0 dead000000000122 0000000000000000 [ 12.338435] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 12.338805] page dumped because: kasan: bad access detected [ 12.339024] [ 12.339114] Memory state around the buggy address: [ 12.339347] ffff888103a09f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.339619] ffff888103a09f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.340019] >ffff888103a0a000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.340282] ^ [ 12.340452] ffff888103a0a080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 12.340807] ffff888103a0a100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.341128] ==================================================================