Date
July 3, 2025, 11:10 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 20.481123] ================================================================== [ 20.481301] BUG: KASAN: double-free in kmem_cache_double_free+0x190/0x3c8 [ 20.481492] Free of addr fff00000c6393000 by task kunit_try_catch/209 [ 20.481590] [ 20.481799] CPU: 0 UID: 0 PID: 209 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT [ 20.481969] Tainted: [B]=BAD_PAGE, [N]=TEST [ 20.482041] Hardware name: linux,dummy-virt (DT) [ 20.482118] Call trace: [ 20.482189] show_stack+0x20/0x38 (C) [ 20.482312] dump_stack_lvl+0x8c/0xd0 [ 20.482413] print_report+0x118/0x608 [ 20.482529] kasan_report_invalid_free+0xc0/0xe8 [ 20.482637] check_slab_allocation+0xd4/0x108 [ 20.482752] __kasan_slab_pre_free+0x2c/0x48 [ 20.482859] kmem_cache_free+0xf0/0x468 [ 20.482964] kmem_cache_double_free+0x190/0x3c8 [ 20.483084] kunit_try_run_case+0x170/0x3f0 [ 20.483199] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 20.483316] kthread+0x328/0x630 [ 20.483422] ret_from_fork+0x10/0x20 [ 20.483525] [ 20.483584] Allocated by task 209: [ 20.483674] kasan_save_stack+0x3c/0x68 [ 20.483768] kasan_save_track+0x20/0x40 [ 20.483861] kasan_save_alloc_info+0x40/0x58 [ 20.483994] __kasan_slab_alloc+0xa8/0xb0 [ 20.484104] kmem_cache_alloc_noprof+0x10c/0x398 [ 20.484230] kmem_cache_double_free+0x12c/0x3c8 [ 20.484328] kunit_try_run_case+0x170/0x3f0 [ 20.484408] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 20.484562] kthread+0x328/0x630 [ 20.484671] ret_from_fork+0x10/0x20 [ 20.484757] [ 20.484821] Freed by task 209: [ 20.484891] kasan_save_stack+0x3c/0x68 [ 20.485033] kasan_save_track+0x20/0x40 [ 20.485111] kasan_save_free_info+0x4c/0x78 [ 20.485198] __kasan_slab_free+0x6c/0x98 [ 20.485307] kmem_cache_free+0x260/0x468 [ 20.485389] kmem_cache_double_free+0x140/0x3c8 [ 20.485469] kunit_try_run_case+0x170/0x3f0 [ 20.485560] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 20.485649] kthread+0x328/0x630 [ 20.485799] ret_from_fork+0x10/0x20 [ 20.485885] [ 20.485956] The buggy address belongs to the object at fff00000c6393000 [ 20.485956] which belongs to the cache test_cache of size 200 [ 20.486151] The buggy address is located 0 bytes inside of [ 20.486151] 200-byte region [fff00000c6393000, fff00000c63930c8) [ 20.486307] [ 20.486359] The buggy address belongs to the physical page: [ 20.486419] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106393 [ 20.486533] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 20.486665] page_type: f5(slab) [ 20.486774] raw: 0bfffe0000000000 fff00000c6de6140 dead000000000122 0000000000000000 [ 20.486886] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 20.486977] page dumped because: kasan: bad access detected [ 20.487088] [ 20.487161] Memory state around the buggy address: [ 20.487265] fff00000c6392f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 20.487368] fff00000c6392f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 20.487470] >fff00000c6393000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 20.487560] ^ [ 20.487624] fff00000c6393080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 20.487723] fff00000c6393100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 20.487808] ==================================================================
[ 12.227713] ================================================================== [ 12.228194] BUG: KASAN: double-free in kmem_cache_double_free+0x1e5/0x480 [ 12.228829] Free of addr ffff88810318e000 by task kunit_try_catch/226 [ 12.229590] [ 12.229822] CPU: 0 UID: 0 PID: 226 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 12.229870] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.229881] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.229902] Call Trace: [ 12.229914] <TASK> [ 12.229931] dump_stack_lvl+0x73/0xb0 [ 12.229960] print_report+0xd1/0x650 [ 12.229982] ? __virt_addr_valid+0x1db/0x2d0 [ 12.230005] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.230066] ? kmem_cache_double_free+0x1e5/0x480 [ 12.230090] kasan_report_invalid_free+0x10a/0x130 [ 12.230113] ? kmem_cache_double_free+0x1e5/0x480 [ 12.230149] ? kmem_cache_double_free+0x1e5/0x480 [ 12.230172] check_slab_allocation+0x101/0x130 [ 12.230193] __kasan_slab_pre_free+0x28/0x40 [ 12.230212] kmem_cache_free+0xed/0x420 [ 12.230232] ? kasan_save_track+0x18/0x40 [ 12.230250] ? kasan_save_stack+0x45/0x70 [ 12.230268] ? kmem_cache_double_free+0x1e5/0x480 [ 12.230290] ? __kasan_slab_free+0x61/0x70 [ 12.230322] kmem_cache_double_free+0x1e5/0x480 [ 12.230345] ? __pfx_kmem_cache_double_free+0x10/0x10 [ 12.230367] ? finish_task_switch.isra.0+0x153/0x700 [ 12.230390] ? __switch_to+0x47/0xf50 [ 12.230418] ? __pfx_read_tsc+0x10/0x10 [ 12.230437] ? ktime_get_ts64+0x86/0x230 [ 12.230461] kunit_try_run_case+0x1a5/0x480 [ 12.230485] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.230506] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.230533] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.230555] ? __kthread_parkme+0x82/0x180 [ 12.230575] ? preempt_count_sub+0x50/0x80 [ 12.230597] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.230619] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.230642] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.230663] kthread+0x337/0x6f0 [ 12.230682] ? trace_preempt_on+0x20/0xc0 [ 12.230704] ? __pfx_kthread+0x10/0x10 [ 12.230724] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.230743] ? calculate_sigpending+0x7b/0xa0 [ 12.230766] ? __pfx_kthread+0x10/0x10 [ 12.230787] ret_from_fork+0x116/0x1d0 [ 12.230804] ? __pfx_kthread+0x10/0x10 [ 12.230823] ret_from_fork_asm+0x1a/0x30 [ 12.230854] </TASK> [ 12.230867] [ 12.245330] Allocated by task 226: [ 12.245478] kasan_save_stack+0x45/0x70 [ 12.245627] kasan_save_track+0x18/0x40 [ 12.245768] kasan_save_alloc_info+0x3b/0x50 [ 12.245975] __kasan_slab_alloc+0x91/0xa0 [ 12.246116] kmem_cache_alloc_noprof+0x123/0x3f0 [ 12.246297] kmem_cache_double_free+0x14f/0x480 [ 12.246585] kunit_try_run_case+0x1a5/0x480 [ 12.246745] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.246925] kthread+0x337/0x6f0 [ 12.247095] ret_from_fork+0x116/0x1d0 [ 12.247316] ret_from_fork_asm+0x1a/0x30 [ 12.247512] [ 12.247600] Freed by task 226: [ 12.247726] kasan_save_stack+0x45/0x70 [ 12.247883] kasan_save_track+0x18/0x40 [ 12.248074] kasan_save_free_info+0x3f/0x60 [ 12.248265] __kasan_slab_free+0x56/0x70 [ 12.248451] kmem_cache_free+0x249/0x420 [ 12.248612] kmem_cache_double_free+0x16a/0x480 [ 12.248763] kunit_try_run_case+0x1a5/0x480 [ 12.248903] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.249154] kthread+0x337/0x6f0 [ 12.249497] ret_from_fork+0x116/0x1d0 [ 12.249672] ret_from_fork_asm+0x1a/0x30 [ 12.249804] [ 12.249873] The buggy address belongs to the object at ffff88810318e000 [ 12.249873] which belongs to the cache test_cache of size 200 [ 12.250555] The buggy address is located 0 bytes inside of [ 12.250555] 200-byte region [ffff88810318e000, ffff88810318e0c8) [ 12.251049] [ 12.251133] The buggy address belongs to the physical page: [ 12.251336] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10318e [ 12.251569] flags: 0x200000000000000(node=0|zone=2) [ 12.251803] page_type: f5(slab) [ 12.251966] raw: 0200000000000000 ffff888100c16500 dead000000000122 0000000000000000 [ 12.252867] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 12.253219] page dumped because: kasan: bad access detected [ 12.253525] [ 12.253622] Memory state around the buggy address: [ 12.253818] ffff88810318df00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.254057] ffff88810318df80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.254592] >ffff88810318e000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.254851] ^ [ 12.255016] ffff88810318e080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 12.255548] ffff88810318e100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.255828] ==================================================================