Date
July 17, 2025, 10:12 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 30.372910] ================================================================== [ 30.373093] BUG: KASAN: double-free in kmem_cache_double_free+0x190/0x3c8 [ 30.373370] Free of addr fff00000c9b25000 by task kunit_try_catch/240 [ 30.373478] [ 30.373669] CPU: 1 UID: 0 PID: 240 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6-next-20250717 #1 PREEMPT [ 30.373764] Tainted: [B]=BAD_PAGE, [N]=TEST [ 30.373789] Hardware name: linux,dummy-virt (DT) [ 30.373823] Call trace: [ 30.373847] show_stack+0x20/0x38 (C) [ 30.373907] dump_stack_lvl+0x8c/0xd0 [ 30.374105] print_report+0x118/0x5d0 [ 30.374209] kasan_report_invalid_free+0xc0/0xe8 [ 30.374434] check_slab_allocation+0xd4/0x108 [ 30.374607] __kasan_slab_pre_free+0x2c/0x48 [ 30.374704] kmem_cache_free+0xf0/0x468 [ 30.374928] kmem_cache_double_free+0x190/0x3c8 [ 30.375029] kunit_try_run_case+0x170/0x3f0 [ 30.375383] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 30.375499] kthread+0x328/0x630 [ 30.375562] ret_from_fork+0x10/0x20 [ 30.375938] [ 30.375978] Allocated by task 240: [ 30.376013] kasan_save_stack+0x3c/0x68 [ 30.376262] kasan_save_track+0x20/0x40 [ 30.376462] kasan_save_alloc_info+0x40/0x58 [ 30.376685] __kasan_slab_alloc+0xa8/0xb0 [ 30.376722] kmem_cache_alloc_noprof+0x10c/0x398 [ 30.376765] kmem_cache_double_free+0x12c/0x3c8 [ 30.376805] kunit_try_run_case+0x170/0x3f0 [ 30.376842] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 30.376884] kthread+0x328/0x630 [ 30.376916] ret_from_fork+0x10/0x20 [ 30.377580] [ 30.377701] Freed by task 240: [ 30.377777] kasan_save_stack+0x3c/0x68 [ 30.377834] kasan_save_track+0x20/0x40 [ 30.377886] kasan_save_free_info+0x4c/0x78 [ 30.377928] __kasan_slab_free+0x6c/0x98 [ 30.378069] kmem_cache_free+0x260/0x468 [ 30.378148] kmem_cache_double_free+0x140/0x3c8 [ 30.378201] kunit_try_run_case+0x170/0x3f0 [ 30.378238] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 30.378590] kthread+0x328/0x630 [ 30.378714] ret_from_fork+0x10/0x20 [ 30.378751] [ 30.378775] The buggy address belongs to the object at fff00000c9b25000 [ 30.378775] which belongs to the cache test_cache of size 200 [ 30.378848] The buggy address is located 0 bytes inside of [ 30.378848] 200-byte region [fff00000c9b25000, fff00000c9b250c8) [ 30.378983] [ 30.379005] The buggy address belongs to the physical page: [ 30.379040] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x109b25 [ 30.379197] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 30.379477] page_type: f5(slab) [ 30.379530] raw: 0bfffe0000000000 fff00000c5817280 dead000000000122 0000000000000000 [ 30.379816] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 30.379951] page dumped because: kasan: bad access detected [ 30.379997] [ 30.380014] Memory state around the buggy address: [ 30.380067] fff00000c9b24f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.380110] fff00000c9b24f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.380194] >fff00000c9b25000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.380298] ^ [ 30.380529] fff00000c9b25080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 30.380687] fff00000c9b25100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 30.380725] ==================================================================
[ 26.342343] ================================================================== [ 26.342757] BUG: KASAN: double-free in kmem_cache_double_free+0x1e5/0x480 [ 26.343095] Free of addr ffff888106180000 by task kunit_try_catch/258 [ 26.343542] [ 26.343683] CPU: 0 UID: 0 PID: 258 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6-next-20250717 #1 PREEMPT(voluntary) [ 26.343738] Tainted: [B]=BAD_PAGE, [N]=TEST [ 26.343749] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 26.343770] Call Trace: [ 26.343806] <TASK> [ 26.343824] dump_stack_lvl+0x73/0xb0 [ 26.343857] print_report+0xd1/0x610 [ 26.343879] ? __virt_addr_valid+0x1db/0x2d0 [ 26.343904] ? kasan_complete_mode_report_info+0x64/0x200 [ 26.343928] ? kmem_cache_double_free+0x1e5/0x480 [ 26.343953] kasan_report_invalid_free+0x10a/0x130 [ 26.343976] ? kmem_cache_double_free+0x1e5/0x480 [ 26.344001] ? kmem_cache_double_free+0x1e5/0x480 [ 26.344024] check_slab_allocation+0x101/0x130 [ 26.344045] __kasan_slab_pre_free+0x28/0x40 [ 26.344065] kmem_cache_free+0xed/0x420 [ 26.344095] ? kasan_save_track+0x18/0x40 [ 26.344135] ? kasan_save_stack+0x45/0x70 [ 26.344153] ? kmem_cache_double_free+0x1e5/0x480 [ 26.344176] ? __kasan_slab_free+0x61/0x70 [ 26.344197] kmem_cache_double_free+0x1e5/0x480 [ 26.344220] ? __pfx_kmem_cache_double_free+0x10/0x10 [ 26.344242] ? finish_task_switch.isra.0+0x153/0x700 [ 26.344264] ? __switch_to+0x47/0xf80 [ 26.344293] ? __pfx_read_tsc+0x10/0x10 [ 26.344314] ? ktime_get_ts64+0x86/0x230 [ 26.344426] kunit_try_run_case+0x1a5/0x480 [ 26.344454] ? __pfx_kunit_try_run_case+0x10/0x10 [ 26.344475] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 26.344499] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 26.344523] ? __kthread_parkme+0x82/0x180 [ 26.344547] ? preempt_count_sub+0x50/0x80 [ 26.344592] ? __pfx_kunit_try_run_case+0x10/0x10 [ 26.344614] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 26.344637] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 26.344659] kthread+0x337/0x6f0 [ 26.344677] ? trace_preempt_on+0x20/0xc0 [ 26.344700] ? __pfx_kthread+0x10/0x10 [ 26.344720] ? _raw_spin_unlock_irq+0x47/0x80 [ 26.344740] ? calculate_sigpending+0x7b/0xa0 [ 26.344763] ? __pfx_kthread+0x10/0x10 [ 26.344784] ret_from_fork+0x116/0x1d0 [ 26.344801] ? __pfx_kthread+0x10/0x10 [ 26.344820] ret_from_fork_asm+0x1a/0x30 [ 26.344852] </TASK> [ 26.344862] [ 26.357624] Allocated by task 258: [ 26.358039] kasan_save_stack+0x45/0x70 [ 26.358204] kasan_save_track+0x18/0x40 [ 26.358490] kasan_save_alloc_info+0x3b/0x50 [ 26.358682] __kasan_slab_alloc+0x91/0xa0 [ 26.358851] kmem_cache_alloc_noprof+0x123/0x3f0 [ 26.359062] kmem_cache_double_free+0x14f/0x480 [ 26.359266] kunit_try_run_case+0x1a5/0x480 [ 26.359872] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 26.360188] kthread+0x337/0x6f0 [ 26.360471] ret_from_fork+0x116/0x1d0 [ 26.360817] ret_from_fork_asm+0x1a/0x30 [ 26.361120] [ 26.361218] Freed by task 258: [ 26.361514] kasan_save_stack+0x45/0x70 [ 26.361707] kasan_save_track+0x18/0x40 [ 26.361878] kasan_save_free_info+0x3f/0x60 [ 26.362071] __kasan_slab_free+0x56/0x70 [ 26.362259] kmem_cache_free+0x249/0x420 [ 26.362892] kmem_cache_double_free+0x16a/0x480 [ 26.363055] kunit_try_run_case+0x1a5/0x480 [ 26.363502] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 26.363828] kthread+0x337/0x6f0 [ 26.364003] ret_from_fork+0x116/0x1d0 [ 26.364429] ret_from_fork_asm+0x1a/0x30 [ 26.364713] [ 26.364810] The buggy address belongs to the object at ffff888106180000 [ 26.364810] which belongs to the cache test_cache of size 200 [ 26.365680] The buggy address is located 0 bytes inside of [ 26.365680] 200-byte region [ffff888106180000, ffff8881061800c8) [ 26.366365] [ 26.366607] The buggy address belongs to the physical page: [ 26.366850] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106180 [ 26.367336] flags: 0x200000000000000(node=0|zone=2) [ 26.367568] page_type: f5(slab) [ 26.367725] raw: 0200000000000000 ffff888101e9e500 dead000000000122 0000000000000000 [ 26.368046] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 26.368687] page dumped because: kasan: bad access detected [ 26.368901] [ 26.368981] Memory state around the buggy address: [ 26.369688] ffff88810617ff00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 26.370136] ffff88810617ff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 26.370677] >ffff888106180000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 26.371049] ^ [ 26.371230] ffff888106180080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 26.371812] ffff888106180100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 26.372186] ==================================================================