Date
July 4, 2025, 11:11 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 18.686581] ================================================================== [ 18.686657] BUG: KASAN: double-free in kmem_cache_double_free+0x190/0x3c8 [ 18.686729] Free of addr fff00000c76e9000 by task kunit_try_catch/209 [ 18.686774] [ 18.686826] CPU: 1 UID: 0 PID: 209 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT [ 18.686910] Tainted: [B]=BAD_PAGE, [N]=TEST [ 18.686947] Hardware name: linux,dummy-virt (DT) [ 18.686981] Call trace: [ 18.687006] show_stack+0x20/0x38 (C) [ 18.687059] dump_stack_lvl+0x8c/0xd0 [ 18.687111] print_report+0x118/0x608 [ 18.687157] kasan_report_invalid_free+0xc0/0xe8 [ 18.687221] check_slab_allocation+0xd4/0x108 [ 18.687270] __kasan_slab_pre_free+0x2c/0x48 [ 18.687316] kmem_cache_free+0xf0/0x468 [ 18.687362] kmem_cache_double_free+0x190/0x3c8 [ 18.687410] kunit_try_run_case+0x170/0x3f0 [ 18.687466] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.687518] kthread+0x328/0x630 [ 18.687561] ret_from_fork+0x10/0x20 [ 18.687616] [ 18.687639] Allocated by task 209: [ 18.687677] kasan_save_stack+0x3c/0x68 [ 18.687717] kasan_save_track+0x20/0x40 [ 18.687754] kasan_save_alloc_info+0x40/0x58 [ 18.687794] __kasan_slab_alloc+0xa8/0xb0 [ 18.688005] kmem_cache_alloc_noprof+0x10c/0x398 [ 18.688645] kmem_cache_double_free+0x12c/0x3c8 [ 18.688855] kunit_try_run_case+0x170/0x3f0 [ 18.689098] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.689212] kthread+0x328/0x630 [ 18.689298] ret_from_fork+0x10/0x20 [ 18.689448] [ 18.689787] Freed by task 209: [ 18.689925] kasan_save_stack+0x3c/0x68 [ 18.690005] kasan_save_track+0x20/0x40 [ 18.690124] kasan_save_free_info+0x4c/0x78 [ 18.690193] __kasan_slab_free+0x6c/0x98 [ 18.690278] kmem_cache_free+0x260/0x468 [ 18.690414] kmem_cache_double_free+0x140/0x3c8 [ 18.690472] kunit_try_run_case+0x170/0x3f0 [ 18.690617] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.690662] kthread+0x328/0x630 [ 18.690850] ret_from_fork+0x10/0x20 [ 18.691066] [ 18.691106] The buggy address belongs to the object at fff00000c76e9000 [ 18.691106] which belongs to the cache test_cache of size 200 [ 18.691286] The buggy address is located 0 bytes inside of [ 18.691286] 200-byte region [fff00000c76e9000, fff00000c76e90c8) [ 18.691374] [ 18.691495] The buggy address belongs to the physical page: [ 18.691552] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1076e9 [ 18.691615] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 18.691828] page_type: f5(slab) [ 18.691904] raw: 0bfffe0000000000 fff00000c46f5a00 dead000000000122 0000000000000000 [ 18.692096] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 18.692174] page dumped because: kasan: bad access detected [ 18.692266] [ 18.692307] Memory state around the buggy address: [ 18.692375] fff00000c76e8f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 18.692442] fff00000c76e8f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 18.692535] >fff00000c76e9000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 18.692601] ^ [ 18.692722] fff00000c76e9080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 18.692812] fff00000c76e9100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.692851] ==================================================================
[ 12.679893] ================================================================== [ 12.680680] BUG: KASAN: double-free in kmem_cache_double_free+0x1e5/0x480 [ 12.681539] Free of addr ffff88810398a000 by task kunit_try_catch/226 [ 12.682325] [ 12.682464] CPU: 1 UID: 0 PID: 226 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 12.682514] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.682526] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.682549] Call Trace: [ 12.682566] <TASK> [ 12.682588] dump_stack_lvl+0x73/0xb0 [ 12.682625] print_report+0xd1/0x650 [ 12.682693] ? __virt_addr_valid+0x1db/0x2d0 [ 12.682718] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.682739] ? kmem_cache_double_free+0x1e5/0x480 [ 12.682777] kasan_report_invalid_free+0x10a/0x130 [ 12.682800] ? kmem_cache_double_free+0x1e5/0x480 [ 12.682825] ? kmem_cache_double_free+0x1e5/0x480 [ 12.682851] check_slab_allocation+0x101/0x130 [ 12.682873] __kasan_slab_pre_free+0x28/0x40 [ 12.682894] kmem_cache_free+0xed/0x420 [ 12.682914] ? kmem_cache_alloc_noprof+0x123/0x3f0 [ 12.682934] ? kmem_cache_double_free+0x1e5/0x480 [ 12.682960] kmem_cache_double_free+0x1e5/0x480 [ 12.682986] ? __pfx_kmem_cache_double_free+0x10/0x10 [ 12.683201] ? finish_task_switch.isra.0+0x153/0x700 [ 12.683246] ? __switch_to+0x47/0xf50 [ 12.683277] ? __pfx_read_tsc+0x10/0x10 [ 12.683297] ? ktime_get_ts64+0x86/0x230 [ 12.683321] kunit_try_run_case+0x1a5/0x480 [ 12.683347] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.683368] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.683391] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.683412] ? __kthread_parkme+0x82/0x180 [ 12.683432] ? preempt_count_sub+0x50/0x80 [ 12.683452] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.683474] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.683495] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.683516] kthread+0x337/0x6f0 [ 12.683535] ? trace_preempt_on+0x20/0xc0 [ 12.683559] ? __pfx_kthread+0x10/0x10 [ 12.683579] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.683598] ? calculate_sigpending+0x7b/0xa0 [ 12.683621] ? __pfx_kthread+0x10/0x10 [ 12.683640] ret_from_fork+0x116/0x1d0 [ 12.683658] ? __pfx_kthread+0x10/0x10 [ 12.683676] ret_from_fork_asm+0x1a/0x30 [ 12.683706] </TASK> [ 12.683718] [ 12.698019] Allocated by task 226: [ 12.698445] kasan_save_stack+0x45/0x70 [ 12.699199] kasan_save_track+0x18/0x40 [ 12.699679] kasan_save_alloc_info+0x3b/0x50 [ 12.699839] __kasan_slab_alloc+0x91/0xa0 [ 12.699977] kmem_cache_alloc_noprof+0x123/0x3f0 [ 12.700133] kmem_cache_double_free+0x14f/0x480 [ 12.700344] kunit_try_run_case+0x1a5/0x480 [ 12.700695] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.701021] kthread+0x337/0x6f0 [ 12.701275] ret_from_fork+0x116/0x1d0 [ 12.701496] ret_from_fork_asm+0x1a/0x30 [ 12.701702] [ 12.701775] Freed by task 226: [ 12.701929] kasan_save_stack+0x45/0x70 [ 12.702166] kasan_save_track+0x18/0x40 [ 12.702684] kasan_save_free_info+0x3f/0x60 [ 12.702877] __kasan_slab_free+0x56/0x70 [ 12.703072] kmem_cache_free+0x249/0x420 [ 12.703290] kmem_cache_double_free+0x16a/0x480 [ 12.703858] kunit_try_run_case+0x1a5/0x480 [ 12.704050] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.704366] kthread+0x337/0x6f0 [ 12.704485] ret_from_fork+0x116/0x1d0 [ 12.704611] ret_from_fork_asm+0x1a/0x30 [ 12.704805] [ 12.704921] The buggy address belongs to the object at ffff88810398a000 [ 12.704921] which belongs to the cache test_cache of size 200 [ 12.705874] The buggy address is located 0 bytes inside of [ 12.705874] 200-byte region [ffff88810398a000, ffff88810398a0c8) [ 12.706692] [ 12.707143] The buggy address belongs to the physical page: [ 12.707531] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10398a [ 12.708259] flags: 0x200000000000000(node=0|zone=2) [ 12.708506] page_type: f5(slab) [ 12.708893] raw: 0200000000000000 ffff888101d0c640 dead000000000122 0000000000000000 [ 12.709447] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 12.709842] page dumped because: kasan: bad access detected [ 12.710167] [ 12.710254] Memory state around the buggy address: [ 12.710884] ffff888103989f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.711136] ffff888103989f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.711515] >ffff88810398a000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.712437] ^ [ 12.712714] ffff88810398a080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 12.713101] ffff88810398a100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.713680] ==================================================================