Date
July 12, 2025, 11:09 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 20.123780] ================================================================== [ 20.124102] BUG: KASAN: double-free in kmem_cache_double_free+0x190/0x3c8 [ 20.124451] Free of addr fff00000c59ab000 by task kunit_try_catch/210 [ 20.124928] [ 20.125128] CPU: 0 UID: 0 PID: 210 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT [ 20.125649] Tainted: [B]=BAD_PAGE, [N]=TEST [ 20.125908] Hardware name: linux,dummy-virt (DT) [ 20.126035] Call trace: [ 20.126181] show_stack+0x20/0x38 (C) [ 20.126411] dump_stack_lvl+0x8c/0xd0 [ 20.126759] print_report+0x118/0x608 [ 20.126941] kasan_report_invalid_free+0xc0/0xe8 [ 20.127185] check_slab_allocation+0xd4/0x108 [ 20.127327] __kasan_slab_pre_free+0x2c/0x48 [ 20.127450] kmem_cache_free+0xf0/0x468 [ 20.127668] kmem_cache_double_free+0x190/0x3c8 [ 20.127981] kunit_try_run_case+0x170/0x3f0 [ 20.128207] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 20.128460] kthread+0x328/0x630 [ 20.128681] ret_from_fork+0x10/0x20 [ 20.128856] [ 20.128897] Allocated by task 210: [ 20.128965] kasan_save_stack+0x3c/0x68 [ 20.129066] kasan_save_track+0x20/0x40 [ 20.129543] kasan_save_alloc_info+0x40/0x58 [ 20.129731] __kasan_slab_alloc+0xa8/0xb0 [ 20.129803] kmem_cache_alloc_noprof+0x10c/0x398 [ 20.129898] kmem_cache_double_free+0x12c/0x3c8 [ 20.129972] kunit_try_run_case+0x170/0x3f0 [ 20.130127] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 20.130324] kthread+0x328/0x630 [ 20.130469] ret_from_fork+0x10/0x20 [ 20.130575] [ 20.130619] Freed by task 210: [ 20.131025] kasan_save_stack+0x3c/0x68 [ 20.131165] kasan_save_track+0x20/0x40 [ 20.131285] kasan_save_free_info+0x4c/0x78 [ 20.131372] __kasan_slab_free+0x6c/0x98 [ 20.131457] kmem_cache_free+0x260/0x468 [ 20.131541] kmem_cache_double_free+0x140/0x3c8 [ 20.131625] kunit_try_run_case+0x170/0x3f0 [ 20.131706] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 20.131801] kthread+0x328/0x630 [ 20.131885] ret_from_fork+0x10/0x20 [ 20.131967] [ 20.132007] The buggy address belongs to the object at fff00000c59ab000 [ 20.132007] which belongs to the cache test_cache of size 200 [ 20.132539] The buggy address is located 0 bytes inside of [ 20.132539] 200-byte region [fff00000c59ab000, fff00000c59ab0c8) [ 20.132712] [ 20.132768] The buggy address belongs to the physical page: [ 20.132863] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1059ab [ 20.133129] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 20.133355] page_type: f5(slab) [ 20.133567] raw: 0bfffe0000000000 fff00000c5801780 dead000000000122 0000000000000000 [ 20.133982] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 20.134123] page dumped because: kasan: bad access detected [ 20.134303] [ 20.134369] Memory state around the buggy address: [ 20.134544] fff00000c59aaf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 20.135151] fff00000c59aaf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 20.135367] >fff00000c59ab000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 20.135452] ^ [ 20.135883] fff00000c59ab080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 20.136196] fff00000c59ab100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 20.136436] ==================================================================
[ 13.302607] ================================================================== [ 13.303463] BUG: KASAN: double-free in kmem_cache_double_free+0x1e5/0x480 [ 13.303918] Free of addr ffff888102665000 by task kunit_try_catch/227 [ 13.304204] [ 13.304359] CPU: 1 UID: 0 PID: 227 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 13.304404] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.304415] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.304435] Call Trace: [ 13.304447] <TASK> [ 13.304464] dump_stack_lvl+0x73/0xb0 [ 13.304495] print_report+0xd1/0x650 [ 13.304517] ? __virt_addr_valid+0x1db/0x2d0 [ 13.304542] ? kasan_complete_mode_report_info+0x64/0x200 [ 13.304565] ? kmem_cache_double_free+0x1e5/0x480 [ 13.304591] kasan_report_invalid_free+0x10a/0x130 [ 13.304615] ? kmem_cache_double_free+0x1e5/0x480 [ 13.304642] ? kmem_cache_double_free+0x1e5/0x480 [ 13.304774] check_slab_allocation+0x101/0x130 [ 13.304798] __kasan_slab_pre_free+0x28/0x40 [ 13.304819] kmem_cache_free+0xed/0x420 [ 13.304839] ? kmem_cache_alloc_noprof+0x123/0x3f0 [ 13.304860] ? kmem_cache_double_free+0x1e5/0x480 [ 13.304888] kmem_cache_double_free+0x1e5/0x480 [ 13.304912] ? __pfx_kmem_cache_double_free+0x10/0x10 [ 13.304959] ? finish_task_switch.isra.0+0x153/0x700 [ 13.304984] ? __switch_to+0x47/0xf50 [ 13.305013] ? __pfx_read_tsc+0x10/0x10 [ 13.305034] ? ktime_get_ts64+0x86/0x230 [ 13.305059] kunit_try_run_case+0x1a5/0x480 [ 13.305084] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.305106] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 13.305130] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 13.305154] ? __kthread_parkme+0x82/0x180 [ 13.305174] ? preempt_count_sub+0x50/0x80 [ 13.305197] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.305221] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.305245] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.305269] kthread+0x337/0x6f0 [ 13.305288] ? trace_preempt_on+0x20/0xc0 [ 13.305311] ? __pfx_kthread+0x10/0x10 [ 13.305331] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.305352] ? calculate_sigpending+0x7b/0xa0 [ 13.305377] ? __pfx_kthread+0x10/0x10 [ 13.305398] ret_from_fork+0x116/0x1d0 [ 13.305416] ? __pfx_kthread+0x10/0x10 [ 13.305436] ret_from_fork_asm+0x1a/0x30 [ 13.305467] </TASK> [ 13.305477] [ 13.315331] Allocated by task 227: [ 13.315515] kasan_save_stack+0x45/0x70 [ 13.315861] kasan_save_track+0x18/0x40 [ 13.316052] kasan_save_alloc_info+0x3b/0x50 [ 13.316250] __kasan_slab_alloc+0x91/0xa0 [ 13.316435] kmem_cache_alloc_noprof+0x123/0x3f0 [ 13.316635] kmem_cache_double_free+0x14f/0x480 [ 13.317334] kunit_try_run_case+0x1a5/0x480 [ 13.317543] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.317911] kthread+0x337/0x6f0 [ 13.318075] ret_from_fork+0x116/0x1d0 [ 13.318244] ret_from_fork_asm+0x1a/0x30 [ 13.318433] [ 13.318521] Freed by task 227: [ 13.318717] kasan_save_stack+0x45/0x70 [ 13.318904] kasan_save_track+0x18/0x40 [ 13.319074] kasan_save_free_info+0x3f/0x60 [ 13.319255] __kasan_slab_free+0x56/0x70 [ 13.319426] kmem_cache_free+0x249/0x420 [ 13.319598] kmem_cache_double_free+0x16a/0x480 [ 13.320656] kunit_try_run_case+0x1a5/0x480 [ 13.320841] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.321270] kthread+0x337/0x6f0 [ 13.321411] ret_from_fork+0x116/0x1d0 [ 13.321583] ret_from_fork_asm+0x1a/0x30 [ 13.321959] [ 13.322058] The buggy address belongs to the object at ffff888102665000 [ 13.322058] which belongs to the cache test_cache of size 200 [ 13.322556] The buggy address is located 0 bytes inside of [ 13.322556] 200-byte region [ffff888102665000, ffff8881026650c8) [ 13.323247] [ 13.323344] The buggy address belongs to the physical page: [ 13.323573] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102665 [ 13.324311] flags: 0x200000000000000(node=0|zone=2) [ 13.324540] page_type: f5(slab) [ 13.324829] raw: 0200000000000000 ffff888101020780 dead000000000122 0000000000000000 [ 13.325117] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 13.325453] page dumped because: kasan: bad access detected [ 13.325723] [ 13.325839] Memory state around the buggy address: [ 13.326014] ffff888102664f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.326327] ffff888102664f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.326610] >ffff888102665000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 13.326876] ^ [ 13.326992] ffff888102665080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 13.327214] ffff888102665100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.327634] ==================================================================