Date
June 5, 2025, 7:08 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 26.295413] ================================================================== [ 26.295727] BUG: KASAN: double-free in kmem_cache_double_free+0x190/0x3c8 [ 26.295922] Free of addr fff00000c7798000 by task kunit_try_catch/209 [ 26.296036] [ 26.296127] CPU: 0 UID: 0 PID: 209 Comm: kunit_try_catch Tainted: G B N 6.15.0-next-20250605 #1 PREEMPT [ 26.296427] Tainted: [B]=BAD_PAGE, [N]=TEST [ 26.296692] Hardware name: linux,dummy-virt (DT) [ 26.296790] Call trace: [ 26.296873] show_stack+0x20/0x38 (C) [ 26.297101] dump_stack_lvl+0x8c/0xd0 [ 26.297421] print_report+0x118/0x608 [ 26.297558] kasan_report_invalid_free+0xc0/0xe8 [ 26.297689] check_slab_allocation+0xd4/0x108 [ 26.297811] __kasan_slab_pre_free+0x2c/0x48 [ 26.297962] kmem_cache_free+0xf0/0x468 [ 26.298166] kmem_cache_double_free+0x190/0x3c8 [ 26.298469] kunit_try_run_case+0x170/0x3f0 [ 26.298807] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 26.298942] kthread+0x328/0x630 [ 26.299090] ret_from_fork+0x10/0x20 [ 26.299432] [ 26.299487] Allocated by task 209: [ 26.299579] kasan_save_stack+0x3c/0x68 [ 26.299691] kasan_save_track+0x20/0x40 [ 26.299910] kasan_save_alloc_info+0x40/0x58 [ 26.300035] __kasan_slab_alloc+0xa8/0xb0 [ 26.300147] kmem_cache_alloc_noprof+0x10c/0x398 [ 26.300264] kmem_cache_double_free+0x12c/0x3c8 [ 26.300527] kunit_try_run_case+0x170/0x3f0 [ 26.300636] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 26.300802] kthread+0x328/0x630 [ 26.301032] ret_from_fork+0x10/0x20 [ 26.301131] [ 26.301227] Freed by task 209: [ 26.301415] kasan_save_stack+0x3c/0x68 [ 26.301530] kasan_save_track+0x20/0x40 [ 26.301833] kasan_save_free_info+0x4c/0x78 [ 26.301948] __kasan_slab_free+0x6c/0x98 [ 26.302183] kmem_cache_free+0x260/0x468 [ 26.302277] kmem_cache_double_free+0x140/0x3c8 [ 26.302402] kunit_try_run_case+0x170/0x3f0 [ 26.302520] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 26.302696] kthread+0x328/0x630 [ 26.302801] ret_from_fork+0x10/0x20 [ 26.302940] [ 26.302993] The buggy address belongs to the object at fff00000c7798000 [ 26.302993] which belongs to the cache test_cache of size 200 [ 26.303153] The buggy address is located 0 bytes inside of [ 26.303153] 200-byte region [fff00000c7798000, fff00000c77980c8) [ 26.303314] [ 26.303445] The buggy address belongs to the physical page: [ 26.303533] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x107798 [ 26.303674] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 26.303801] page_type: f5(slab) [ 26.304000] raw: 0bfffe0000000000 fff00000c11a6b40 dead000000000122 0000000000000000 [ 26.304140] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 26.304290] page dumped because: kasan: bad access detected [ 26.304405] [ 26.304461] Memory state around the buggy address: [ 26.304548] fff00000c7797f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 26.304713] fff00000c7797f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 26.304997] >fff00000c7798000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 26.305115] ^ [ 26.305265] fff00000c7798080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 26.305478] fff00000c7798100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 26.305641] ==================================================================
[ 12.101323] ================================================================== [ 12.101767] BUG: KASAN: double-free in kmem_cache_double_free+0x1e5/0x480 [ 12.102312] Free of addr ffff888102b42000 by task kunit_try_catch/226 [ 12.102588] [ 12.102698] CPU: 0 UID: 0 PID: 226 Comm: kunit_try_catch Tainted: G B N 6.15.0-next-20250605 #1 PREEMPT(voluntary) [ 12.102742] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.102753] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.102773] Call Trace: [ 12.102784] <TASK> [ 12.102799] dump_stack_lvl+0x73/0xb0 [ 12.102826] print_report+0xd1/0x650 [ 12.102848] ? __virt_addr_valid+0x1db/0x2d0 [ 12.102872] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.102905] ? kmem_cache_double_free+0x1e5/0x480 [ 12.102930] kasan_report_invalid_free+0x10a/0x130 [ 12.102956] ? kmem_cache_double_free+0x1e5/0x480 [ 12.103002] ? kmem_cache_double_free+0x1e5/0x480 [ 12.103027] check_slab_allocation+0x101/0x130 [ 12.103048] __kasan_slab_pre_free+0x28/0x40 [ 12.103069] kmem_cache_free+0xed/0x420 [ 12.103175] ? kmem_cache_alloc_noprof+0x123/0x3f0 [ 12.103196] ? kmem_cache_double_free+0x1e5/0x480 [ 12.103223] kmem_cache_double_free+0x1e5/0x480 [ 12.103248] ? __pfx_kmem_cache_double_free+0x10/0x10 [ 12.103272] ? finish_task_switch.isra.0+0x153/0x700 [ 12.103295] ? __switch_to+0x47/0xf50 [ 12.103323] ? __pfx_read_tsc+0x10/0x10 [ 12.103344] ? ktime_get_ts64+0x86/0x230 [ 12.103368] kunit_try_run_case+0x1a5/0x480 [ 12.103389] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.103409] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.103434] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.103481] ? __kthread_parkme+0x82/0x180 [ 12.103501] ? preempt_count_sub+0x50/0x80 [ 12.103537] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.103558] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.103582] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.103605] kthread+0x337/0x6f0 [ 12.103624] ? trace_preempt_on+0x20/0xc0 [ 12.103646] ? __pfx_kthread+0x10/0x10 [ 12.103667] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.103689] ? calculate_sigpending+0x7b/0xa0 [ 12.103713] ? __pfx_kthread+0x10/0x10 [ 12.103735] ret_from_fork+0x116/0x1d0 [ 12.103754] ? __pfx_kthread+0x10/0x10 [ 12.103775] ret_from_fork_asm+0x1a/0x30 [ 12.103807] </TASK> [ 12.103818] [ 12.115643] Allocated by task 226: [ 12.116167] kasan_save_stack+0x45/0x70 [ 12.116464] kasan_save_track+0x18/0x40 [ 12.116641] kasan_save_alloc_info+0x3b/0x50 [ 12.116945] __kasan_slab_alloc+0x91/0xa0 [ 12.117306] kmem_cache_alloc_noprof+0x123/0x3f0 [ 12.117518] kmem_cache_double_free+0x14f/0x480 [ 12.117714] kunit_try_run_case+0x1a5/0x480 [ 12.118141] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.118466] kthread+0x337/0x6f0 [ 12.118637] ret_from_fork+0x116/0x1d0 [ 12.118869] ret_from_fork_asm+0x1a/0x30 [ 12.119190] [ 12.119281] Freed by task 226: [ 12.119421] kasan_save_stack+0x45/0x70 [ 12.119604] kasan_save_track+0x18/0x40 [ 12.120146] kasan_save_free_info+0x3f/0x60 [ 12.120304] __kasan_slab_free+0x56/0x70 [ 12.120623] kmem_cache_free+0x249/0x420 [ 12.120796] kmem_cache_double_free+0x16a/0x480 [ 12.121184] kunit_try_run_case+0x1a5/0x480 [ 12.121364] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.121609] kthread+0x337/0x6f0 [ 12.122089] ret_from_fork+0x116/0x1d0 [ 12.122281] ret_from_fork_asm+0x1a/0x30 [ 12.122421] [ 12.122518] The buggy address belongs to the object at ffff888102b42000 [ 12.122518] which belongs to the cache test_cache of size 200 [ 12.123336] The buggy address is located 0 bytes inside of [ 12.123336] 200-byte region [ffff888102b42000, ffff888102b420c8) [ 12.124129] [ 12.124235] The buggy address belongs to the physical page: [ 12.124462] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102b42 [ 12.124953] flags: 0x200000000000000(node=0|zone=2) [ 12.125196] page_type: f5(slab) [ 12.125349] raw: 0200000000000000 ffff888101b4ca00 dead000000000122 0000000000000000 [ 12.125953] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 12.126293] page dumped because: kasan: bad access detected [ 12.126535] [ 12.126794] Memory state around the buggy address: [ 12.126974] ffff888102b41f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.127502] ffff888102b41f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.127958] >ffff888102b42000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.128407] ^ [ 12.128533] ffff888102b42080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 12.128970] ffff888102b42100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.129322] ==================================================================