Date
July 12, 2025, 11:09 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 17.360597] ================================================================== [ 17.360679] BUG: KASAN: double-free in kmem_cache_double_free+0x190/0x3c8 [ 17.360755] Free of addr fff00000c78b1000 by task kunit_try_catch/209 [ 17.360798] [ 17.360839] CPU: 1 UID: 0 PID: 209 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT [ 17.360925] Tainted: [B]=BAD_PAGE, [N]=TEST [ 17.360952] Hardware name: linux,dummy-virt (DT) [ 17.360985] Call trace: [ 17.361009] show_stack+0x20/0x38 (C) [ 17.361059] dump_stack_lvl+0x8c/0xd0 [ 17.361111] print_report+0x118/0x5d0 [ 17.361157] kasan_report_invalid_free+0xc0/0xe8 [ 17.361222] check_slab_allocation+0xd4/0x108 [ 17.361270] __kasan_slab_pre_free+0x2c/0x48 [ 17.361355] kmem_cache_free+0xf0/0x468 [ 17.361410] kmem_cache_double_free+0x190/0x3c8 [ 17.361475] kunit_try_run_case+0x170/0x3f0 [ 17.361526] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.361578] kthread+0x328/0x630 [ 17.361623] ret_from_fork+0x10/0x20 [ 17.361670] [ 17.361687] Allocated by task 209: [ 17.361735] kasan_save_stack+0x3c/0x68 [ 17.361800] kasan_save_track+0x20/0x40 [ 17.361839] kasan_save_alloc_info+0x40/0x58 [ 17.361877] __kasan_slab_alloc+0xa8/0xb0 [ 17.361914] kmem_cache_alloc_noprof+0x10c/0x398 [ 17.361986] kmem_cache_double_free+0x12c/0x3c8 [ 17.362025] kunit_try_run_case+0x170/0x3f0 [ 17.362060] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.362104] kthread+0x328/0x630 [ 17.362215] ret_from_fork+0x10/0x20 [ 17.362282] [ 17.362327] Freed by task 209: [ 17.362353] kasan_save_stack+0x3c/0x68 [ 17.362392] kasan_save_track+0x20/0x40 [ 17.362429] kasan_save_free_info+0x4c/0x78 [ 17.362502] __kasan_slab_free+0x6c/0x98 [ 17.362569] kmem_cache_free+0x260/0x468 [ 17.362606] kmem_cache_double_free+0x140/0x3c8 [ 17.362677] kunit_try_run_case+0x170/0x3f0 [ 17.362714] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.362758] kthread+0x328/0x630 [ 17.362816] ret_from_fork+0x10/0x20 [ 17.362937] [ 17.362959] The buggy address belongs to the object at fff00000c78b1000 [ 17.362959] which belongs to the cache test_cache of size 200 [ 17.363018] The buggy address is located 0 bytes inside of [ 17.363018] 200-byte region [fff00000c78b1000, fff00000c78b10c8) [ 17.363079] [ 17.363189] The buggy address belongs to the physical page: [ 17.363263] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1078b1 [ 17.363376] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 17.363443] page_type: f5(slab) [ 17.363532] raw: 0bfffe0000000000 fff00000c4715a00 dead000000000122 0000000000000000 [ 17.363614] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 17.363672] page dumped because: kasan: bad access detected [ 17.363704] [ 17.363722] Memory state around the buggy address: [ 17.364035] fff00000c78b0f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.364087] fff00000c78b0f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.364132] >fff00000c78b1000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 17.364183] ^ [ 17.364250] fff00000c78b1080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 17.364315] fff00000c78b1100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.364365] ==================================================================
[ 13.680115] ================================================================== [ 13.680893] BUG: KASAN: double-free in kmem_cache_double_free+0x1e5/0x480 [ 13.681787] Free of addr ffff888103a5c000 by task kunit_try_catch/226 [ 13.682657] [ 13.682762] CPU: 0 UID: 0 PID: 226 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 13.682807] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.682818] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.682839] Call Trace: [ 13.682853] <TASK> [ 13.682869] dump_stack_lvl+0x73/0xb0 [ 13.682901] print_report+0xd1/0x610 [ 13.682924] ? __virt_addr_valid+0x1db/0x2d0 [ 13.682948] ? kasan_complete_mode_report_info+0x64/0x200 [ 13.682971] ? kmem_cache_double_free+0x1e5/0x480 [ 13.682997] kasan_report_invalid_free+0x10a/0x130 [ 13.683022] ? kmem_cache_double_free+0x1e5/0x480 [ 13.683048] ? kmem_cache_double_free+0x1e5/0x480 [ 13.683073] check_slab_allocation+0x101/0x130 [ 13.683095] __kasan_slab_pre_free+0x28/0x40 [ 13.683116] kmem_cache_free+0xed/0x420 [ 13.683135] ? kasan_save_track+0x18/0x40 [ 13.683155] ? kasan_save_stack+0x45/0x70 [ 13.683174] ? kmem_cache_double_free+0x1e5/0x480 [ 13.683198] ? kmem_cache_double_free+0x14f/0x480 [ 13.683248] kmem_cache_double_free+0x1e5/0x480 [ 13.683452] ? __pfx_kmem_cache_double_free+0x10/0x10 [ 13.683483] ? finish_task_switch.isra.0+0x153/0x700 [ 13.683617] ? __switch_to+0x47/0xf50 [ 13.683648] ? __pfx_read_tsc+0x10/0x10 [ 13.683669] ? ktime_get_ts64+0x86/0x230 [ 13.683695] kunit_try_run_case+0x1a5/0x480 [ 13.683721] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.683744] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 13.683769] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 13.683793] ? __kthread_parkme+0x82/0x180 [ 13.683813] ? preempt_count_sub+0x50/0x80 [ 13.683836] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.683860] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.683885] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.683910] kthread+0x337/0x6f0 [ 13.683929] ? trace_preempt_on+0x20/0xc0 [ 13.683953] ? __pfx_kthread+0x10/0x10 [ 13.683973] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.684233] ? calculate_sigpending+0x7b/0xa0 [ 13.684273] ? __pfx_kthread+0x10/0x10 [ 13.684295] ret_from_fork+0x116/0x1d0 [ 13.684315] ? __pfx_kthread+0x10/0x10 [ 13.684336] ret_from_fork_asm+0x1a/0x30 [ 13.684368] </TASK> [ 13.684380] [ 13.699930] Allocated by task 226: [ 13.700392] kasan_save_stack+0x45/0x70 [ 13.700676] kasan_save_track+0x18/0x40 [ 13.700814] kasan_save_alloc_info+0x3b/0x50 [ 13.700961] __kasan_slab_alloc+0x91/0xa0 [ 13.701434] kmem_cache_alloc_noprof+0x123/0x3f0 [ 13.701868] kmem_cache_double_free+0x14f/0x480 [ 13.702393] kunit_try_run_case+0x1a5/0x480 [ 13.702811] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.703226] kthread+0x337/0x6f0 [ 13.703371] ret_from_fork+0x116/0x1d0 [ 13.703752] ret_from_fork_asm+0x1a/0x30 [ 13.703917] [ 13.704069] Freed by task 226: [ 13.704472] kasan_save_stack+0x45/0x70 [ 13.704840] kasan_save_track+0x18/0x40 [ 13.705048] kasan_save_free_info+0x3f/0x60 [ 13.705569] __kasan_slab_free+0x56/0x70 [ 13.705968] kmem_cache_free+0x249/0x420 [ 13.706334] kmem_cache_double_free+0x16a/0x480 [ 13.706661] kunit_try_run_case+0x1a5/0x480 [ 13.706812] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.706983] kthread+0x337/0x6f0 [ 13.707303] ret_from_fork+0x116/0x1d0 [ 13.707676] ret_from_fork_asm+0x1a/0x30 [ 13.708199] [ 13.708406] The buggy address belongs to the object at ffff888103a5c000 [ 13.708406] which belongs to the cache test_cache of size 200 [ 13.709577] The buggy address is located 0 bytes inside of [ 13.709577] 200-byte region [ffff888103a5c000, ffff888103a5c0c8) [ 13.710168] [ 13.710381] The buggy address belongs to the physical page: [ 13.710892] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103a5c [ 13.711668] flags: 0x200000000000000(node=0|zone=2) [ 13.711958] page_type: f5(slab) [ 13.712348] raw: 0200000000000000 ffff888103a56140 dead000000000122 0000000000000000 [ 13.713022] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 13.713431] page dumped because: kasan: bad access detected [ 13.713602] [ 13.713670] Memory state around the buggy address: [ 13.713822] ffff888103a5bf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.714063] ffff888103a5bf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.714376] >ffff888103a5c000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 13.714752] ^ [ 13.714875] ffff888103a5c080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 13.715381] ffff888103a5c100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.715662] ==================================================================