Date
July 17, 2025, 11:10 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 15.922884] ================================================================== [ 15.922950] BUG: KASAN: double-free in kmem_cache_double_free+0x190/0x3c8 [ 15.923032] Free of addr fff00000c78a1000 by task kunit_try_catch/210 [ 15.923076] [ 15.923113] CPU: 0 UID: 0 PID: 210 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT [ 15.923225] Tainted: [B]=BAD_PAGE, [N]=TEST [ 15.923256] Hardware name: linux,dummy-virt (DT) [ 15.923288] Call trace: [ 15.923311] show_stack+0x20/0x38 (C) [ 15.923364] dump_stack_lvl+0x8c/0xd0 [ 15.923431] print_report+0x118/0x5d0 [ 15.923480] kasan_report_invalid_free+0xc0/0xe8 [ 15.923540] check_slab_allocation+0xd4/0x108 [ 15.923590] __kasan_slab_pre_free+0x2c/0x48 [ 15.923638] kmem_cache_free+0xf0/0x468 [ 15.923685] kmem_cache_double_free+0x190/0x3c8 [ 15.923731] kunit_try_run_case+0x170/0x3f0 [ 15.923781] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.923831] kthread+0x328/0x630 [ 15.923874] ret_from_fork+0x10/0x20 [ 15.923922] [ 15.923939] Allocated by task 210: [ 15.923974] kasan_save_stack+0x3c/0x68 [ 15.925045] kasan_save_track+0x20/0x40 [ 15.925234] kasan_save_alloc_info+0x40/0x58 [ 15.925287] __kasan_slab_alloc+0xa8/0xb0 [ 15.925331] kmem_cache_alloc_noprof+0x10c/0x398 [ 15.925474] kmem_cache_double_free+0x12c/0x3c8 [ 15.925525] kunit_try_run_case+0x170/0x3f0 [ 15.925563] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.925852] kthread+0x328/0x630 [ 15.926036] ret_from_fork+0x10/0x20 [ 15.926115] [ 15.926358] Freed by task 210: [ 15.926491] kasan_save_stack+0x3c/0x68 [ 15.926571] kasan_save_track+0x20/0x40 [ 15.926680] kasan_save_free_info+0x4c/0x78 [ 15.926763] __kasan_slab_free+0x6c/0x98 [ 15.927159] kmem_cache_free+0x260/0x468 [ 15.927225] kmem_cache_double_free+0x140/0x3c8 [ 15.927396] kunit_try_run_case+0x170/0x3f0 [ 15.927441] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.927738] kthread+0x328/0x630 [ 15.927825] ret_from_fork+0x10/0x20 [ 15.928153] [ 15.928203] The buggy address belongs to the object at fff00000c78a1000 [ 15.928203] which belongs to the cache test_cache of size 200 [ 15.928381] The buggy address is located 0 bytes inside of [ 15.928381] 200-byte region [fff00000c78a1000, fff00000c78a10c8) [ 15.928447] [ 15.928699] The buggy address belongs to the physical page: [ 15.928777] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1078a1 [ 15.929157] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 15.929245] page_type: f5(slab) [ 15.929295] raw: 0bfffe0000000000 fff00000c1378dc0 dead000000000122 0000000000000000 [ 15.929348] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 15.929390] page dumped because: kasan: bad access detected [ 15.929423] [ 15.929440] Memory state around the buggy address: [ 15.929836] fff00000c78a0f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.929966] fff00000c78a0f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.930392] >fff00000c78a1000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 15.930492] ^ [ 15.930766] fff00000c78a1080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 15.930846] fff00000c78a1100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.931040] ==================================================================
[ 13.722207] ================================================================== [ 13.722835] BUG: KASAN: double-free in kmem_cache_double_free+0x1e5/0x480 [ 13.723201] Free of addr ffff888102a1c000 by task kunit_try_catch/226 [ 13.723593] [ 13.723751] CPU: 0 UID: 0 PID: 226 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 13.723800] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.723811] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.723832] Call Trace: [ 13.723845] <TASK> [ 13.723862] dump_stack_lvl+0x73/0xb0 [ 13.723892] print_report+0xd1/0x610 [ 13.723915] ? __virt_addr_valid+0x1db/0x2d0 [ 13.723940] ? kasan_complete_mode_report_info+0x64/0x200 [ 13.723964] ? kmem_cache_double_free+0x1e5/0x480 [ 13.723990] kasan_report_invalid_free+0x10a/0x130 [ 13.724015] ? kmem_cache_double_free+0x1e5/0x480 [ 13.724042] ? kmem_cache_double_free+0x1e5/0x480 [ 13.724073] check_slab_allocation+0x101/0x130 [ 13.724096] __kasan_slab_pre_free+0x28/0x40 [ 13.724117] kmem_cache_free+0xed/0x420 [ 13.724137] ? kmem_cache_alloc_noprof+0x123/0x3f0 [ 13.724159] ? kmem_cache_double_free+0x1e5/0x480 [ 13.724186] kmem_cache_double_free+0x1e5/0x480 [ 13.724211] ? __pfx_kmem_cache_double_free+0x10/0x10 [ 13.724235] ? finish_task_switch.isra.0+0x153/0x700 [ 13.724328] ? __switch_to+0x47/0xf50 [ 13.724357] ? __pfx_read_tsc+0x10/0x10 [ 13.724379] ? ktime_get_ts64+0x86/0x230 [ 13.724403] kunit_try_run_case+0x1a5/0x480 [ 13.724429] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.724453] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 13.724478] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 13.724502] ? __kthread_parkme+0x82/0x180 [ 13.724524] ? preempt_count_sub+0x50/0x80 [ 13.724578] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.724602] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.724627] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.724653] kthread+0x337/0x6f0 [ 13.724672] ? trace_preempt_on+0x20/0xc0 [ 13.724696] ? __pfx_kthread+0x10/0x10 [ 13.724716] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.724738] ? calculate_sigpending+0x7b/0xa0 [ 13.724763] ? __pfx_kthread+0x10/0x10 [ 13.724784] ret_from_fork+0x116/0x1d0 [ 13.724803] ? __pfx_kthread+0x10/0x10 [ 13.724823] ret_from_fork_asm+0x1a/0x30 [ 13.724855] </TASK> [ 13.724866] [ 13.735822] Allocated by task 226: [ 13.736162] kasan_save_stack+0x45/0x70 [ 13.736606] kasan_save_track+0x18/0x40 [ 13.736889] kasan_save_alloc_info+0x3b/0x50 [ 13.737183] __kasan_slab_alloc+0x91/0xa0 [ 13.737721] kmem_cache_alloc_noprof+0x123/0x3f0 [ 13.737941] kmem_cache_double_free+0x14f/0x480 [ 13.738247] kunit_try_run_case+0x1a5/0x480 [ 13.738672] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.738913] kthread+0x337/0x6f0 [ 13.739088] ret_from_fork+0x116/0x1d0 [ 13.739269] ret_from_fork_asm+0x1a/0x30 [ 13.739441] [ 13.739983] Freed by task 226: [ 13.740153] kasan_save_stack+0x45/0x70 [ 13.740523] kasan_save_track+0x18/0x40 [ 13.740904] kasan_save_free_info+0x3f/0x60 [ 13.741193] __kasan_slab_free+0x56/0x70 [ 13.741750] kmem_cache_free+0x249/0x420 [ 13.741956] kmem_cache_double_free+0x16a/0x480 [ 13.742410] kunit_try_run_case+0x1a5/0x480 [ 13.742647] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.742985] kthread+0x337/0x6f0 [ 13.743169] ret_from_fork+0x116/0x1d0 [ 13.743625] ret_from_fork_asm+0x1a/0x30 [ 13.743812] [ 13.743902] The buggy address belongs to the object at ffff888102a1c000 [ 13.743902] which belongs to the cache test_cache of size 200 [ 13.744771] The buggy address is located 0 bytes inside of [ 13.744771] 200-byte region [ffff888102a1c000, ffff888102a1c0c8) [ 13.745589] [ 13.745694] The buggy address belongs to the physical page: [ 13.746056] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102a1c [ 13.746701] flags: 0x200000000000000(node=0|zone=2) [ 13.746926] page_type: f5(slab) [ 13.747176] raw: 0200000000000000 ffff88810166bb40 dead000000000122 0000000000000000 [ 13.747698] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 13.748183] page dumped because: kasan: bad access detected [ 13.748671] [ 13.748887] Memory state around the buggy address: [ 13.749164] ffff888102a1bf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.749666] ffff888102a1bf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.749955] >ffff888102a1c000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 13.750252] ^ [ 13.750755] ffff888102a1c080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 13.751112] ffff888102a1c100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.751545] ==================================================================