Date
July 8, 2025, 11:09 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 19.997465] ================================================================== [ 19.997624] BUG: KASAN: double-free in kmem_cache_double_free+0x190/0x3c8 [ 19.997792] Free of addr fff00000c7716000 by task kunit_try_catch/209 [ 19.997884] [ 19.997927] CPU: 1 UID: 0 PID: 209 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT [ 19.998013] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.998052] Hardware name: linux,dummy-virt (DT) [ 19.998096] Call trace: [ 19.998121] show_stack+0x20/0x38 (C) [ 19.998398] dump_stack_lvl+0x8c/0xd0 [ 19.998475] print_report+0x118/0x608 [ 19.998594] kasan_report_invalid_free+0xc0/0xe8 [ 19.998658] check_slab_allocation+0xd4/0x108 [ 19.998706] __kasan_slab_pre_free+0x2c/0x48 [ 19.998754] kmem_cache_free+0xf0/0x468 [ 19.999000] kmem_cache_double_free+0x190/0x3c8 [ 19.999065] kunit_try_run_case+0x170/0x3f0 [ 19.999155] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.999239] kthread+0x328/0x630 [ 19.999312] ret_from_fork+0x10/0x20 [ 19.999369] [ 19.999397] Allocated by task 209: [ 19.999426] kasan_save_stack+0x3c/0x68 [ 19.999469] kasan_save_track+0x20/0x40 [ 19.999820] kasan_save_alloc_info+0x40/0x58 [ 19.999933] __kasan_slab_alloc+0xa8/0xb0 [ 20.000000] kmem_cache_alloc_noprof+0x10c/0x398 [ 20.000113] kmem_cache_double_free+0x12c/0x3c8 [ 20.000165] kunit_try_run_case+0x170/0x3f0 [ 20.000204] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 20.000272] kthread+0x328/0x630 [ 20.000306] ret_from_fork+0x10/0x20 [ 20.000341] [ 20.000686] Freed by task 209: [ 20.000747] kasan_save_stack+0x3c/0x68 [ 20.000802] kasan_save_track+0x20/0x40 [ 20.000840] kasan_save_free_info+0x4c/0x78 [ 20.000880] __kasan_slab_free+0x6c/0x98 [ 20.000917] kmem_cache_free+0x260/0x468 [ 20.000954] kmem_cache_double_free+0x140/0x3c8 [ 20.000991] kunit_try_run_case+0x170/0x3f0 [ 20.001029] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 20.001071] kthread+0x328/0x630 [ 20.001110] ret_from_fork+0x10/0x20 [ 20.001147] [ 20.001177] The buggy address belongs to the object at fff00000c7716000 [ 20.001177] which belongs to the cache test_cache of size 200 [ 20.001240] The buggy address is located 0 bytes inside of [ 20.001240] 200-byte region [fff00000c7716000, fff00000c77160c8) [ 20.001335] [ 20.001362] The buggy address belongs to the physical page: [ 20.001481] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x107716 [ 20.001539] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 20.001592] page_type: f5(slab) [ 20.001637] raw: 0bfffe0000000000 fff00000c63df140 dead000000000122 0000000000000000 [ 20.001689] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 20.001731] page dumped because: kasan: bad access detected [ 20.001762] [ 20.001821] Memory state around the buggy address: [ 20.001955] fff00000c7715f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 20.002028] fff00000c7715f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 20.002179] >fff00000c7716000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 20.002219] ^ [ 20.002247] fff00000c7716080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 20.002289] fff00000c7716100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 20.002334] ==================================================================
[ 13.213656] ================================================================== [ 13.214632] BUG: KASAN: double-free in kmem_cache_double_free+0x1e5/0x480 [ 13.215474] Free of addr ffff888102b94000 by task kunit_try_catch/227 [ 13.216284] [ 13.216479] CPU: 0 UID: 0 PID: 227 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 13.216527] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.216538] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.216559] Call Trace: [ 13.216573] <TASK> [ 13.216591] dump_stack_lvl+0x73/0xb0 [ 13.216655] print_report+0xd1/0x650 [ 13.216680] ? __virt_addr_valid+0x1db/0x2d0 [ 13.216705] ? kasan_complete_mode_report_info+0x64/0x200 [ 13.216728] ? kmem_cache_double_free+0x1e5/0x480 [ 13.216754] kasan_report_invalid_free+0x10a/0x130 [ 13.216779] ? kmem_cache_double_free+0x1e5/0x480 [ 13.216806] ? kmem_cache_double_free+0x1e5/0x480 [ 13.216830] check_slab_allocation+0x101/0x130 [ 13.216852] __kasan_slab_pre_free+0x28/0x40 [ 13.216873] kmem_cache_free+0xed/0x420 [ 13.216894] ? kmem_cache_alloc_noprof+0x123/0x3f0 [ 13.216915] ? kmem_cache_double_free+0x1e5/0x480 [ 13.216958] kmem_cache_double_free+0x1e5/0x480 [ 13.216984] ? __pfx_kmem_cache_double_free+0x10/0x10 [ 13.217021] ? finish_task_switch.isra.0+0x153/0x700 [ 13.217045] ? __switch_to+0x47/0xf50 [ 13.217075] ? __pfx_read_tsc+0x10/0x10 [ 13.217123] ? ktime_get_ts64+0x86/0x230 [ 13.217150] kunit_try_run_case+0x1a5/0x480 [ 13.217366] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.217390] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 13.217416] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 13.217440] ? __kthread_parkme+0x82/0x180 [ 13.217462] ? preempt_count_sub+0x50/0x80 [ 13.217486] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.217510] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.217534] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.217559] kthread+0x337/0x6f0 [ 13.217578] ? trace_preempt_on+0x20/0xc0 [ 13.217614] ? __pfx_kthread+0x10/0x10 [ 13.217635] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.217656] ? calculate_sigpending+0x7b/0xa0 [ 13.217682] ? __pfx_kthread+0x10/0x10 [ 13.217708] ret_from_fork+0x116/0x1d0 [ 13.217727] ? __pfx_kthread+0x10/0x10 [ 13.217747] ret_from_fork_asm+0x1a/0x30 [ 13.217779] </TASK> [ 13.217790] [ 13.235272] Allocated by task 227: [ 13.235420] kasan_save_stack+0x45/0x70 [ 13.235718] kasan_save_track+0x18/0x40 [ 13.236485] kasan_save_alloc_info+0x3b/0x50 [ 13.237049] __kasan_slab_alloc+0x91/0xa0 [ 13.237732] kmem_cache_alloc_noprof+0x123/0x3f0 [ 13.238305] kmem_cache_double_free+0x14f/0x480 [ 13.238619] kunit_try_run_case+0x1a5/0x480 [ 13.238893] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.239407] kthread+0x337/0x6f0 [ 13.239630] ret_from_fork+0x116/0x1d0 [ 13.240117] ret_from_fork_asm+0x1a/0x30 [ 13.240436] [ 13.240518] Freed by task 227: [ 13.240889] kasan_save_stack+0x45/0x70 [ 13.241357] kasan_save_track+0x18/0x40 [ 13.241517] kasan_save_free_info+0x3f/0x60 [ 13.242092] __kasan_slab_free+0x56/0x70 [ 13.242335] kmem_cache_free+0x249/0x420 [ 13.242477] kmem_cache_double_free+0x16a/0x480 [ 13.242937] kunit_try_run_case+0x1a5/0x480 [ 13.243457] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.243953] kthread+0x337/0x6f0 [ 13.244279] ret_from_fork+0x116/0x1d0 [ 13.244420] ret_from_fork_asm+0x1a/0x30 [ 13.244695] [ 13.244885] The buggy address belongs to the object at ffff888102b94000 [ 13.244885] which belongs to the cache test_cache of size 200 [ 13.246314] The buggy address is located 0 bytes inside of [ 13.246314] 200-byte region [ffff888102b94000, ffff888102b940c8) [ 13.247121] [ 13.247323] The buggy address belongs to the physical page: [ 13.247773] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102b94 [ 13.248360] flags: 0x200000000000000(node=0|zone=2) [ 13.248550] page_type: f5(slab) [ 13.248903] raw: 0200000000000000 ffff888102b91000 dead000000000122 0000000000000000 [ 13.249820] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 13.250441] page dumped because: kasan: bad access detected [ 13.250753] [ 13.250823] Memory state around the buggy address: [ 13.251037] ffff888102b93f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.251771] ffff888102b93f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.252571] >ffff888102b94000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 13.252809] ^ [ 13.253093] ffff888102b94080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 13.253757] ffff888102b94100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.254448] ==================================================================