Date
June 17, 2025, 6:35 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 17.753672] ================================================================== [ 17.753754] BUG: KASAN: double-free in kmem_cache_double_free+0x190/0x3c8 [ 17.753833] Free of addr fff00000c5079000 by task kunit_try_catch/218 [ 17.753876] [ 17.754117] CPU: 1 UID: 0 PID: 218 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc2-next-20250617 #1 PREEMPT [ 17.754910] Tainted: [B]=BAD_PAGE, [N]=TEST [ 17.755027] Hardware name: linux,dummy-virt (DT) [ 17.755067] Call trace: [ 17.755561] show_stack+0x20/0x38 (C) [ 17.755866] dump_stack_lvl+0x8c/0xd0 [ 17.756113] print_report+0x118/0x608 [ 17.756546] kasan_report_invalid_free+0xc0/0xe8 [ 17.756679] check_slab_allocation+0xd4/0x108 [ 17.756763] __kasan_slab_pre_free+0x2c/0x48 [ 17.757108] kmem_cache_free+0xf0/0x468 [ 17.757199] kmem_cache_double_free+0x190/0x3c8 [ 17.757388] kunit_try_run_case+0x170/0x3f0 [ 17.757719] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.757829] kthread+0x328/0x630 [ 17.758255] ret_from_fork+0x10/0x20 [ 17.758385] [ 17.758447] Allocated by task 218: [ 17.758561] kasan_save_stack+0x3c/0x68 [ 17.758643] kasan_save_track+0x20/0x40 [ 17.758866] kasan_save_alloc_info+0x40/0x58 [ 17.758920] __kasan_slab_alloc+0xa8/0xb0 [ 17.759097] kmem_cache_alloc_noprof+0x10c/0x398 [ 17.759173] kmem_cache_double_free+0x12c/0x3c8 [ 17.759267] kunit_try_run_case+0x170/0x3f0 [ 17.759333] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.759405] kthread+0x328/0x630 [ 17.759574] ret_from_fork+0x10/0x20 [ 17.759659] [ 17.759809] Freed by task 218: [ 17.759843] kasan_save_stack+0x3c/0x68 [ 17.759911] kasan_save_track+0x20/0x40 [ 17.760135] kasan_save_free_info+0x4c/0x78 [ 17.760422] __kasan_slab_free+0x6c/0x98 [ 17.760635] kmem_cache_free+0x260/0x468 [ 17.760703] kmem_cache_double_free+0x140/0x3c8 [ 17.761081] kunit_try_run_case+0x170/0x3f0 [ 17.761145] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.761583] kthread+0x328/0x630 [ 17.761656] ret_from_fork+0x10/0x20 [ 17.761813] [ 17.761835] The buggy address belongs to the object at fff00000c5079000 [ 17.761835] which belongs to the cache test_cache of size 200 [ 17.762045] The buggy address is located 0 bytes inside of [ 17.762045] 200-byte region [fff00000c5079000, fff00000c50790c8) [ 17.762248] [ 17.762316] The buggy address belongs to the physical page: [ 17.762425] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105079 [ 17.762489] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 17.762553] page_type: f5(slab) [ 17.762953] raw: 0bfffe0000000000 fff00000c115d640 dead000000000122 0000000000000000 [ 17.763057] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 17.763521] page dumped because: kasan: bad access detected [ 17.763590] [ 17.763707] Memory state around the buggy address: [ 17.763764] fff00000c5078f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 17.763816] fff00000c5078f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 17.764134] >fff00000c5079000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 17.764199] ^ [ 17.764251] fff00000c5079080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 17.764558] fff00000c5079100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.764663] ==================================================================
[ 19.099162] ================================================================== [ 19.099778] BUG: KASAN: double-free in kmem_cache_double_free+0x1e5/0x480 [ 19.100225] Free of addr ffff888103838000 by task kunit_try_catch/236 [ 19.100878] [ 19.101054] CPU: 1 UID: 0 PID: 236 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc2-next-20250617 #1 PREEMPT(voluntary) [ 19.101163] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.101194] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 19.101247] Call Trace: [ 19.101281] <TASK> [ 19.101324] dump_stack_lvl+0x73/0xb0 [ 19.101415] print_report+0xd1/0x650 [ 19.101492] ? __virt_addr_valid+0x1db/0x2d0 [ 19.101569] ? kasan_complete_mode_report_info+0x64/0x200 [ 19.101638] ? kmem_cache_double_free+0x1e5/0x480 [ 19.101704] kasan_report_invalid_free+0x10a/0x130 [ 19.101777] ? kmem_cache_double_free+0x1e5/0x480 [ 19.101871] ? kmem_cache_double_free+0x1e5/0x480 [ 19.101945] check_slab_allocation+0x101/0x130 [ 19.102018] __kasan_slab_pre_free+0x28/0x40 [ 19.102088] kmem_cache_free+0xed/0x420 [ 19.102156] ? kmem_cache_alloc_noprof+0x123/0x3f0 [ 19.102222] ? kmem_cache_double_free+0x1e5/0x480 [ 19.102307] kmem_cache_double_free+0x1e5/0x480 [ 19.102383] ? __pfx_kmem_cache_double_free+0x10/0x10 [ 19.102457] ? finish_task_switch.isra.0+0x153/0x700 [ 19.102530] ? __switch_to+0x47/0xf50 [ 19.102618] ? __pfx_read_tsc+0x10/0x10 [ 19.102686] ? ktime_get_ts64+0x86/0x230 [ 19.102768] kunit_try_run_case+0x1a5/0x480 [ 19.103185] ? __pfx_kunit_try_run_case+0x10/0x10 [ 19.103358] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 19.103445] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 19.103528] ? __kthread_parkme+0x82/0x180 [ 19.103609] ? preempt_count_sub+0x50/0x80 [ 19.103682] ? __pfx_kunit_try_run_case+0x10/0x10 [ 19.103753] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 19.103858] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 19.103935] kthread+0x337/0x6f0 [ 19.103983] ? trace_preempt_on+0x20/0xc0 [ 19.104020] ? __pfx_kthread+0x10/0x10 [ 19.104049] ? _raw_spin_unlock_irq+0x47/0x80 [ 19.104083] ? calculate_sigpending+0x7b/0xa0 [ 19.104117] ? __pfx_kthread+0x10/0x10 [ 19.104146] ret_from_fork+0x116/0x1d0 [ 19.104173] ? __pfx_kthread+0x10/0x10 [ 19.104201] ret_from_fork_asm+0x1a/0x30 [ 19.104307] </TASK> [ 19.104351] [ 19.125205] Allocated by task 236: [ 19.125513] kasan_save_stack+0x45/0x70 [ 19.125893] kasan_save_track+0x18/0x40 [ 19.126598] kasan_save_alloc_info+0x3b/0x50 [ 19.127151] __kasan_slab_alloc+0x91/0xa0 [ 19.128009] kmem_cache_alloc_noprof+0x123/0x3f0 [ 19.129077] kmem_cache_double_free+0x14f/0x480 [ 19.130062] kunit_try_run_case+0x1a5/0x480 [ 19.130931] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 19.131329] kthread+0x337/0x6f0 [ 19.131864] ret_from_fork+0x116/0x1d0 [ 19.132586] ret_from_fork_asm+0x1a/0x30 [ 19.133010] [ 19.133167] Freed by task 236: [ 19.133853] kasan_save_stack+0x45/0x70 [ 19.134698] kasan_save_track+0x18/0x40 [ 19.135416] kasan_save_free_info+0x3f/0x60 [ 19.135752] __kasan_slab_free+0x56/0x70 [ 19.136165] kmem_cache_free+0x249/0x420 [ 19.136541] kmem_cache_double_free+0x16a/0x480 [ 19.136949] kunit_try_run_case+0x1a5/0x480 [ 19.137315] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 19.137687] kthread+0x337/0x6f0 [ 19.138043] ret_from_fork+0x116/0x1d0 [ 19.138450] ret_from_fork_asm+0x1a/0x30 [ 19.139242] [ 19.139526] The buggy address belongs to the object at ffff888103838000 [ 19.139526] which belongs to the cache test_cache of size 200 [ 19.140986] The buggy address is located 0 bytes inside of [ 19.140986] 200-byte region [ffff888103838000, ffff8881038380c8) [ 19.142103] [ 19.142487] The buggy address belongs to the physical page: [ 19.143568] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103838 [ 19.144147] flags: 0x200000000000000(node=0|zone=2) [ 19.144552] page_type: f5(slab) [ 19.145006] raw: 0200000000000000 ffff888101db3640 dead000000000122 0000000000000000 [ 19.145756] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 19.146325] page dumped because: kasan: bad access detected [ 19.147078] [ 19.147368] Memory state around the buggy address: [ 19.147728] ffff888103837f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.148345] ffff888103837f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.148884] >ffff888103838000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 19.149448] ^ [ 19.149756] ffff888103838080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 19.150556] ffff888103838100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.151048] ==================================================================