Date
June 7, 2025, 10:40 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 22.292123] ================================================================== [ 22.292661] BUG: KASAN: double-free in kmem_cache_double_free+0x19c/0x3e0 [ 22.293060] Free of addr fff00000c4180000 by task kunit_try_catch/197 [ 22.293638] [ 22.294436] CPU: 1 UID: 0 PID: 197 Comm: kunit_try_catch Tainted: G B N 6.12.33-rc1 #1 [ 22.294665] Tainted: [B]=BAD_PAGE, [N]=TEST [ 22.294737] Hardware name: linux,dummy-virt (DT) [ 22.294829] Call trace: [ 22.294899] dump_backtrace+0x9c/0x128 [ 22.295040] show_stack+0x20/0x38 [ 22.295147] dump_stack_lvl+0x8c/0xd0 [ 22.295238] print_report+0x118/0x5f0 [ 22.295286] kasan_report_invalid_free+0xc0/0xe8 [ 22.295339] check_slab_allocation+0xd4/0x108 [ 22.295451] __kasan_slab_pre_free+0x2c/0x48 [ 22.295565] kmem_cache_free+0xf0/0x460 [ 22.295670] kmem_cache_double_free+0x19c/0x3e0 [ 22.295751] kunit_try_run_case+0x170/0x3f0 [ 22.295799] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 22.295854] kthread+0x24c/0x2d0 [ 22.295898] ret_from_fork+0x10/0x20 [ 22.295947] [ 22.304267] Allocated by task 197: [ 22.304726] kasan_save_stack+0x3c/0x68 [ 22.306117] kasan_save_track+0x20/0x40 [ 22.306612] kasan_save_alloc_info+0x40/0x58 [ 22.307207] __kasan_slab_alloc+0xa8/0xb0 [ 22.307956] kmem_cache_alloc_noprof+0xf8/0x300 [ 22.308660] kmem_cache_double_free+0x130/0x3e0 [ 22.309332] kunit_try_run_case+0x170/0x3f0 [ 22.310008] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 22.310749] kthread+0x24c/0x2d0 [ 22.311289] ret_from_fork+0x10/0x20 [ 22.312324] [ 22.312585] Freed by task 197: [ 22.312903] kasan_save_stack+0x3c/0x68 [ 22.313416] kasan_save_track+0x20/0x40 [ 22.313915] kasan_save_free_info+0x4c/0x78 [ 22.315627] __kasan_slab_free+0x6c/0x98 [ 22.316564] kmem_cache_free+0x118/0x460 [ 22.317444] kmem_cache_double_free+0x144/0x3e0 [ 22.317944] kunit_try_run_case+0x170/0x3f0 [ 22.318672] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 22.319332] kthread+0x24c/0x2d0 [ 22.319998] ret_from_fork+0x10/0x20 [ 22.320707] [ 22.321370] The buggy address belongs to the object at fff00000c4180000 [ 22.321370] which belongs to the cache test_cache of size 200 [ 22.322521] The buggy address is located 0 bytes inside of [ 22.322521] 200-byte region [fff00000c4180000, fff00000c41800c8) [ 22.323611] [ 22.324380] The buggy address belongs to the physical page: [ 22.325250] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x104180 [ 22.326404] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 22.327166] page_type: f5(slab) [ 22.327636] raw: 0bfffe0000000000 fff00000c4182000 dead000000000122 0000000000000000 [ 22.328441] raw: 0000000000000000 00000000800f000f 00000001f5000000 0000000000000000 [ 22.329214] page dumped because: kasan: bad access detected [ 22.329878] [ 22.330234] Memory state around the buggy address: [ 22.330824] fff00000c417ff00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 22.331565] fff00000c417ff80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 22.332583] >fff00000c4180000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 22.333629] ^ [ 22.334241] fff00000c4180080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 22.335126] fff00000c4180100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 22.335997] ==================================================================
[ 18.828595] ================================================================== [ 18.829303] BUG: KASAN: double-free in kmem_cache_double_free+0x1e6/0x490 [ 18.830049] Free of addr ffff88810292c000 by task kunit_try_catch/214 [ 18.830456] [ 18.830758] CPU: 0 UID: 0 PID: 214 Comm: kunit_try_catch Tainted: G B N 6.12.33-rc1 #1 [ 18.830873] Tainted: [B]=BAD_PAGE, [N]=TEST [ 18.830908] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 18.831002] Call Trace: [ 18.831048] <TASK> [ 18.831096] dump_stack_lvl+0x73/0xb0 [ 18.831179] print_report+0xd1/0x640 [ 18.831284] ? __virt_addr_valid+0x1db/0x2d0 [ 18.831370] ? kasan_complete_mode_report_info+0x64/0x200 [ 18.831441] ? kmem_cache_double_free+0x1e6/0x490 [ 18.831516] kasan_report_invalid_free+0xfc/0x120 [ 18.831603] ? kmem_cache_double_free+0x1e6/0x490 [ 18.831684] ? kmem_cache_double_free+0x1e6/0x490 [ 18.831752] check_slab_allocation+0x101/0x130 [ 18.831827] __kasan_slab_pre_free+0x28/0x40 [ 18.831923] kmem_cache_free+0xee/0x400 [ 18.831992] ? ret_from_fork+0x41/0x80 [ 18.832058] ? ret_from_fork+0x41/0x80 [ 18.832120] ? kthread+0x257/0x310 [ 18.832182] ? kmem_cache_double_free+0x1e6/0x490 [ 18.832270] ? __kasan_slab_free+0x61/0x70 [ 18.832346] kmem_cache_double_free+0x1e6/0x490 [ 18.832418] ? __pfx_kmem_cache_double_free+0x10/0x10 [ 18.832483] ? finish_task_switch.isra.0+0x153/0x700 [ 18.832550] ? __switch_to+0x5d9/0xf60 [ 18.832632] ? __pfx_read_tsc+0x10/0x10 [ 18.832663] ? ktime_get_ts64+0x84/0x230 [ 18.832700] kunit_try_run_case+0x1a6/0x480 [ 18.832734] ? __pfx_kunit_try_run_case+0x10/0x10 [ 18.832762] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 18.832793] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 18.832856] ? __kthread_parkme+0x82/0x160 [ 18.832886] ? preempt_count_sub+0x50/0x80 [ 18.832914] ? __pfx_kunit_try_run_case+0x10/0x10 [ 18.832943] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 18.832979] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 18.833015] kthread+0x257/0x310 [ 18.833039] ? __pfx_kthread+0x10/0x10 [ 18.833064] ret_from_fork+0x41/0x80 [ 18.833091] ? __pfx_kthread+0x10/0x10 [ 18.833116] ret_from_fork_asm+0x1a/0x30 [ 18.833158] </TASK> [ 18.833172] [ 18.851132] Allocated by task 214: [ 18.851637] kasan_save_stack+0x45/0x70 [ 18.852109] kasan_save_track+0x18/0x40 [ 18.852443] kasan_save_alloc_info+0x3b/0x50 [ 18.852916] __kasan_slab_alloc+0x91/0xa0 [ 18.853354] kmem_cache_alloc_noprof+0x107/0x350 [ 18.853811] kmem_cache_double_free+0x150/0x490 [ 18.854308] kunit_try_run_case+0x1a6/0x480 [ 18.854649] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 18.855080] kthread+0x257/0x310 [ 18.855390] ret_from_fork+0x41/0x80 [ 18.855845] ret_from_fork_asm+0x1a/0x30 [ 18.856296] [ 18.856551] Freed by task 214: [ 18.856940] kasan_save_stack+0x45/0x70 [ 18.857421] kasan_save_track+0x18/0x40 [ 18.857886] kasan_save_free_info+0x3f/0x60 [ 18.858324] __kasan_slab_free+0x56/0x70 [ 18.858776] kmem_cache_free+0x120/0x400 [ 18.859275] kmem_cache_double_free+0x16b/0x490 [ 18.859779] kunit_try_run_case+0x1a6/0x480 [ 18.860175] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 18.860728] kthread+0x257/0x310 [ 18.861147] ret_from_fork+0x41/0x80 [ 18.861594] ret_from_fork_asm+0x1a/0x30 [ 18.862103] [ 18.862301] The buggy address belongs to the object at ffff88810292c000 [ 18.862301] which belongs to the cache test_cache of size 200 [ 18.863368] The buggy address is located 0 bytes inside of [ 18.863368] 200-byte region [ffff88810292c000, ffff88810292c0c8) [ 18.864340] [ 18.864566] The buggy address belongs to the physical page: [ 18.865116] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10292c [ 18.865712] flags: 0x200000000000000(node=0|zone=2) [ 18.866244] page_type: f5(slab) [ 18.866635] raw: 0200000000000000 ffff888101a84c80 dead000000000122 0000000000000000 [ 18.867351] raw: 0000000000000000 00000000800f000f 00000001f5000000 0000000000000000 [ 18.868041] page dumped because: kasan: bad access detected [ 18.868518] [ 18.868740] Memory state around the buggy address: [ 18.869266] ffff88810292bf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.870549] ffff88810292bf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.871189] >ffff88810292c000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 18.871634] ^ [ 18.872016] ffff88810292c080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 18.872661] ffff88810292c100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.873327] ==================================================================