Date
July 9, 2025, 12:11 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 20.332684] ================================================================== [ 20.332807] BUG: KASAN: double-free in kmem_cache_double_free+0x190/0x3c8 [ 20.333083] Free of addr fff00000c63aa000 by task kunit_try_catch/210 [ 20.333196] [ 20.333324] CPU: 1 UID: 0 PID: 210 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT [ 20.333500] Tainted: [B]=BAD_PAGE, [N]=TEST [ 20.333559] Hardware name: linux,dummy-virt (DT) [ 20.333614] Call trace: [ 20.333654] show_stack+0x20/0x38 (C) [ 20.333840] dump_stack_lvl+0x8c/0xd0 [ 20.333902] print_report+0x118/0x608 [ 20.334016] kasan_report_invalid_free+0xc0/0xe8 [ 20.334123] check_slab_allocation+0xd4/0x108 [ 20.334280] __kasan_slab_pre_free+0x2c/0x48 [ 20.334368] kmem_cache_free+0xf0/0x468 [ 20.334433] kmem_cache_double_free+0x190/0x3c8 [ 20.334629] kunit_try_run_case+0x170/0x3f0 [ 20.334744] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 20.334902] kthread+0x328/0x630 [ 20.334951] ret_from_fork+0x10/0x20 [ 20.335125] [ 20.335148] Allocated by task 210: [ 20.335238] kasan_save_stack+0x3c/0x68 [ 20.335313] kasan_save_track+0x20/0x40 [ 20.335487] kasan_save_alloc_info+0x40/0x58 [ 20.335534] __kasan_slab_alloc+0xa8/0xb0 [ 20.335604] kmem_cache_alloc_noprof+0x10c/0x398 [ 20.335769] kmem_cache_double_free+0x12c/0x3c8 [ 20.335821] kunit_try_run_case+0x170/0x3f0 [ 20.335862] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 20.336172] kthread+0x328/0x630 [ 20.336336] ret_from_fork+0x10/0x20 [ 20.336416] [ 20.336529] Freed by task 210: [ 20.336618] kasan_save_stack+0x3c/0x68 [ 20.336692] kasan_save_track+0x20/0x40 [ 20.336792] kasan_save_free_info+0x4c/0x78 [ 20.336890] __kasan_slab_free+0x6c/0x98 [ 20.337154] kmem_cache_free+0x260/0x468 [ 20.337224] kmem_cache_double_free+0x140/0x3c8 [ 20.337393] kunit_try_run_case+0x170/0x3f0 [ 20.337479] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 20.337602] kthread+0x328/0x630 [ 20.337635] ret_from_fork+0x10/0x20 [ 20.337915] [ 20.337956] The buggy address belongs to the object at fff00000c63aa000 [ 20.337956] which belongs to the cache test_cache of size 200 [ 20.338088] The buggy address is located 0 bytes inside of [ 20.338088] 200-byte region [fff00000c63aa000, fff00000c63aa0c8) [ 20.338236] [ 20.338297] The buggy address belongs to the physical page: [ 20.338362] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1063aa [ 20.338500] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 20.338597] page_type: f5(slab) [ 20.338906] raw: 0bfffe0000000000 fff00000c471a500 dead000000000122 0000000000000000 [ 20.339041] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 20.339110] page dumped because: kasan: bad access detected [ 20.339169] [ 20.339269] Memory state around the buggy address: [ 20.339346] fff00000c63a9f00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 20.339484] fff00000c63a9f80: fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc [ 20.339751] >fff00000c63aa000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 20.339802] ^ [ 20.340074] fff00000c63aa080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 20.340219] fff00000c63aa100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 20.340318] ==================================================================
[ 13.373847] ================================================================== [ 13.374331] BUG: KASAN: double-free in kmem_cache_double_free+0x1e5/0x480 [ 13.374580] Free of addr ffff8881026b4000 by task kunit_try_catch/226 [ 13.374787] [ 13.374884] CPU: 0 UID: 0 PID: 226 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 13.374944] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.374955] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.374977] Call Trace: [ 13.374989] <TASK> [ 13.375009] dump_stack_lvl+0x73/0xb0 [ 13.375040] print_report+0xd1/0x650 [ 13.375064] ? __virt_addr_valid+0x1db/0x2d0 [ 13.375090] ? kasan_complete_mode_report_info+0x64/0x200 [ 13.375112] ? kmem_cache_double_free+0x1e5/0x480 [ 13.375138] kasan_report_invalid_free+0x10a/0x130 [ 13.375162] ? kmem_cache_double_free+0x1e5/0x480 [ 13.375242] ? kmem_cache_double_free+0x1e5/0x480 [ 13.375266] check_slab_allocation+0x101/0x130 [ 13.375300] __kasan_slab_pre_free+0x28/0x40 [ 13.375322] kmem_cache_free+0xed/0x420 [ 13.375342] ? kmem_cache_alloc_noprof+0x123/0x3f0 [ 13.375363] ? kmem_cache_double_free+0x1e5/0x480 [ 13.375390] kmem_cache_double_free+0x1e5/0x480 [ 13.375435] ? __pfx_kmem_cache_double_free+0x10/0x10 [ 13.375460] ? finish_task_switch.isra.0+0x153/0x700 [ 13.375485] ? __switch_to+0x47/0xf50 [ 13.375521] ? __pfx_read_tsc+0x10/0x10 [ 13.375542] ? ktime_get_ts64+0x86/0x230 [ 13.375569] kunit_try_run_case+0x1a5/0x480 [ 13.375595] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.375618] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 13.375644] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 13.375668] ? __kthread_parkme+0x82/0x180 [ 13.375689] ? preempt_count_sub+0x50/0x80 [ 13.375711] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.375736] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.375760] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.375785] kthread+0x337/0x6f0 [ 13.375804] ? trace_preempt_on+0x20/0xc0 [ 13.375828] ? __pfx_kthread+0x10/0x10 [ 13.375848] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.375869] ? calculate_sigpending+0x7b/0xa0 [ 13.375893] ? __pfx_kthread+0x10/0x10 [ 13.375914] ret_from_fork+0x116/0x1d0 [ 13.375942] ? __pfx_kthread+0x10/0x10 [ 13.375962] ret_from_fork_asm+0x1a/0x30 [ 13.375993] </TASK> [ 13.376004] [ 13.389062] Allocated by task 226: [ 13.389203] kasan_save_stack+0x45/0x70 [ 13.389577] kasan_save_track+0x18/0x40 [ 13.389945] kasan_save_alloc_info+0x3b/0x50 [ 13.390367] __kasan_slab_alloc+0x91/0xa0 [ 13.390745] kmem_cache_alloc_noprof+0x123/0x3f0 [ 13.391175] kmem_cache_double_free+0x14f/0x480 [ 13.391605] kunit_try_run_case+0x1a5/0x480 [ 13.391990] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.392331] kthread+0x337/0x6f0 [ 13.392460] ret_from_fork+0x116/0x1d0 [ 13.392593] ret_from_fork_asm+0x1a/0x30 [ 13.392733] [ 13.392803] Freed by task 226: [ 13.392914] kasan_save_stack+0x45/0x70 [ 13.393060] kasan_save_track+0x18/0x40 [ 13.393195] kasan_save_free_info+0x3f/0x60 [ 13.393400] __kasan_slab_free+0x56/0x70 [ 13.393709] kmem_cache_free+0x249/0x420 [ 13.393877] kmem_cache_double_free+0x16a/0x480 [ 13.394071] kunit_try_run_case+0x1a5/0x480 [ 13.394303] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.394613] kthread+0x337/0x6f0 [ 13.394839] ret_from_fork+0x116/0x1d0 [ 13.394978] ret_from_fork_asm+0x1a/0x30 [ 13.395157] [ 13.395271] The buggy address belongs to the object at ffff8881026b4000 [ 13.395271] which belongs to the cache test_cache of size 200 [ 13.395758] The buggy address is located 0 bytes inside of [ 13.395758] 200-byte region [ffff8881026b4000, ffff8881026b40c8) [ 13.396194] [ 13.396270] The buggy address belongs to the physical page: [ 13.396498] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1026b4 [ 13.396866] flags: 0x200000000000000(node=0|zone=2) [ 13.397101] page_type: f5(slab) [ 13.397243] raw: 0200000000000000 ffff888101864dc0 dead000000000122 0000000000000000 [ 13.397548] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 13.397806] page dumped because: kasan: bad access detected [ 13.398068] [ 13.398138] Memory state around the buggy address: [ 13.398326] ffff8881026b3f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.398647] ffff8881026b3f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.398991] >ffff8881026b4000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 13.399206] ^ [ 13.399499] ffff8881026b4080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 13.399838] ffff8881026b4100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.400119] ==================================================================