Date
July 15, 2025, 2:09 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 18.707577] ================================================================== [ 18.707680] BUG: KASAN: double-free in kmem_cache_double_free+0x190/0x3c8 [ 18.707773] Free of addr fff00000c59ea000 by task kunit_try_catch/211 [ 18.707856] [ 18.707935] CPU: 0 UID: 0 PID: 211 Comm: kunit_try_catch Tainted: G B N 6.15.7-rc1 #1 PREEMPT [ 18.708022] Tainted: [B]=BAD_PAGE, [N]=TEST [ 18.708050] Hardware name: linux,dummy-virt (DT) [ 18.708116] Call trace: [ 18.708139] show_stack+0x20/0x38 (C) [ 18.708190] dump_stack_lvl+0x8c/0xd0 [ 18.708263] print_report+0x118/0x5d0 [ 18.708397] kasan_report_invalid_free+0xc0/0xe8 [ 18.708475] check_slab_allocation+0xd4/0x108 [ 18.708642] __kasan_slab_pre_free+0x2c/0x48 [ 18.708781] kmem_cache_free+0xf0/0x468 [ 18.708868] kmem_cache_double_free+0x190/0x3c8 [ 18.708921] kunit_try_run_case+0x170/0x3f0 [ 18.708972] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.709035] kthread+0x328/0x630 [ 18.709101] ret_from_fork+0x10/0x20 [ 18.709168] [ 18.709270] Allocated by task 211: [ 18.709360] kasan_save_stack+0x3c/0x68 [ 18.709414] kasan_save_track+0x20/0x40 [ 18.709449] kasan_save_alloc_info+0x40/0x58 [ 18.709510] __kasan_slab_alloc+0xa8/0xb0 [ 18.709546] kmem_cache_alloc_noprof+0x10c/0x398 [ 18.709585] kmem_cache_double_free+0x12c/0x3c8 [ 18.709666] kunit_try_run_case+0x170/0x3f0 [ 18.709851] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.710010] kthread+0x328/0x630 [ 18.710068] ret_from_fork+0x10/0x20 [ 18.710194] [ 18.710294] Freed by task 211: [ 18.710359] kasan_save_stack+0x3c/0x68 [ 18.710492] kasan_save_track+0x20/0x40 [ 18.710566] kasan_save_free_info+0x4c/0x78 [ 18.710606] __kasan_slab_free+0x6c/0x98 [ 18.710993] kmem_cache_free+0x260/0x468 [ 18.711062] kmem_cache_double_free+0x140/0x3c8 [ 18.711313] kunit_try_run_case+0x170/0x3f0 [ 18.711392] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.711462] kthread+0x328/0x630 [ 18.711498] ret_from_fork+0x10/0x20 [ 18.711534] [ 18.711554] The buggy address belongs to the object at fff00000c59ea000 [ 18.711554] which belongs to the cache test_cache of size 200 [ 18.711631] The buggy address is located 0 bytes inside of [ 18.711631] 200-byte region [fff00000c59ea000, fff00000c59ea0c8) [ 18.711702] [ 18.711724] The buggy address belongs to the physical page: [ 18.711757] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1059ea [ 18.711959] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 18.712176] page_type: f5(slab) [ 18.712252] raw: 0bfffe0000000000 fff00000c1c3aa00 dead000000000122 0000000000000000 [ 18.712464] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 18.712699] page dumped because: kasan: bad access detected [ 18.712798] [ 18.712867] Memory state around the buggy address: [ 18.712935] fff00000c59e9f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.713108] fff00000c59e9f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.713304] >fff00000c59ea000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 18.713478] ^ [ 18.713677] fff00000c59ea080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 18.713827] fff00000c59ea100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.713916] ==================================================================
[ 11.694500] ================================================================== [ 11.695404] BUG: KASAN: double-free in kmem_cache_double_free+0x1e5/0x480 [ 11.695774] Free of addr ffff88810223a000 by task kunit_try_catch/228 [ 11.696332] [ 11.696444] CPU: 0 UID: 0 PID: 228 Comm: kunit_try_catch Tainted: G B N 6.15.7-rc1 #1 PREEMPT(voluntary) [ 11.696487] Tainted: [B]=BAD_PAGE, [N]=TEST [ 11.696498] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 11.696516] Call Trace: [ 11.696528] <TASK> [ 11.696542] dump_stack_lvl+0x73/0xb0 [ 11.696570] print_report+0xd1/0x610 [ 11.696592] ? __virt_addr_valid+0x1db/0x2d0 [ 11.696613] ? kasan_complete_mode_report_info+0x64/0x200 [ 11.696634] ? kmem_cache_double_free+0x1e5/0x480 [ 11.696654] kasan_report_invalid_free+0x10a/0x130 [ 11.696677] ? kmem_cache_double_free+0x1e5/0x480 [ 11.696699] ? kmem_cache_double_free+0x1e5/0x480 [ 11.696719] check_slab_allocation+0x101/0x130 [ 11.696740] __kasan_slab_pre_free+0x28/0x40 [ 11.696760] kmem_cache_free+0xed/0x420 [ 11.696780] ? kmem_cache_alloc_noprof+0x123/0x3f0 [ 11.696800] ? kmem_cache_double_free+0x1e5/0x480 [ 11.696822] kmem_cache_double_free+0x1e5/0x480 [ 11.696842] ? __pfx_kmem_cache_double_free+0x10/0x10 [ 11.696861] ? finish_task_switch.isra.0+0x153/0x700 [ 11.696895] ? __switch_to+0x5d9/0xf60 [ 11.696915] ? dequeue_task_fair+0x166/0x4e0 [ 11.696940] ? __pfx_read_tsc+0x10/0x10 [ 11.696959] ? ktime_get_ts64+0x86/0x230 [ 11.696982] kunit_try_run_case+0x1a5/0x480 [ 11.697004] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.697021] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 11.697044] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 11.697066] ? __kthread_parkme+0x82/0x180 [ 11.697087] ? preempt_count_sub+0x50/0x80 [ 11.697109] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.697133] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.697155] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 11.697177] kthread+0x337/0x6f0 [ 11.697192] ? trace_preempt_on+0x20/0xc0 [ 11.697214] ? __pfx_kthread+0x10/0x10 [ 11.697231] ? _raw_spin_unlock_irq+0x47/0x80 [ 11.697251] ? calculate_sigpending+0x7b/0xa0 [ 11.697271] ? __pfx_kthread+0x10/0x10 [ 11.697288] ret_from_fork+0x41/0x80 [ 11.697307] ? __pfx_kthread+0x10/0x10 [ 11.697324] ret_from_fork_asm+0x1a/0x30 [ 11.697353] </TASK> [ 11.697365] [ 11.708294] Allocated by task 228: [ 11.708460] kasan_save_stack+0x45/0x70 [ 11.708669] kasan_save_track+0x18/0x40 [ 11.709265] kasan_save_alloc_info+0x3b/0x50 [ 11.709453] __kasan_slab_alloc+0x91/0xa0 [ 11.709660] kmem_cache_alloc_noprof+0x123/0x3f0 [ 11.709934] kmem_cache_double_free+0x14f/0x480 [ 11.710154] kunit_try_run_case+0x1a5/0x480 [ 11.710335] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.710585] kthread+0x337/0x6f0 [ 11.711148] ret_from_fork+0x41/0x80 [ 11.711341] ret_from_fork_asm+0x1a/0x30 [ 11.711572] [ 11.711737] Freed by task 228: [ 11.712131] kasan_save_stack+0x45/0x70 [ 11.712329] kasan_save_track+0x18/0x40 [ 11.712632] kasan_save_free_info+0x3f/0x60 [ 11.712791] __kasan_slab_free+0x56/0x70 [ 11.713006] kmem_cache_free+0x249/0x420 [ 11.713196] kmem_cache_double_free+0x16a/0x480 [ 11.713392] kunit_try_run_case+0x1a5/0x480 [ 11.713563] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.713791] kthread+0x337/0x6f0 [ 11.714423] ret_from_fork+0x41/0x80 [ 11.714584] ret_from_fork_asm+0x1a/0x30 [ 11.714917] [ 11.715207] The buggy address belongs to the object at ffff88810223a000 [ 11.715207] which belongs to the cache test_cache of size 200 [ 11.715756] The buggy address is located 0 bytes inside of [ 11.715756] 200-byte region [ffff88810223a000, ffff88810223a0c8) [ 11.716406] [ 11.716577] The buggy address belongs to the physical page: [ 11.717014] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10223a [ 11.717440] flags: 0x200000000000000(node=0|zone=2) [ 11.717682] page_type: f5(slab) [ 11.718090] raw: 0200000000000000 ffff888101949500 dead000000000122 0000000000000000 [ 11.718424] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 11.718961] page dumped because: kasan: bad access detected [ 11.719198] [ 11.719268] Memory state around the buggy address: [ 11.719614] ffff888102239f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.719955] ffff888102239f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.720396] >ffff88810223a000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 11.720709] ^ [ 11.721095] ffff88810223a080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 11.721408] ffff88810223a100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.721976] ==================================================================