Date
July 17, 2025, 11:11 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 16.813351] ================================================================== [ 16.813492] BUG: KASAN: double-free in kfree_sensitive+0x3c/0xb0 [ 16.813782] Free of addr fff00000c3e55180 by task kunit_try_catch/192 [ 16.813834] [ 16.813914] CPU: 1 UID: 0 PID: 192 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT [ 16.813998] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.814050] Hardware name: linux,dummy-virt (DT) [ 16.814088] Call trace: [ 16.814112] show_stack+0x20/0x38 (C) [ 16.814190] dump_stack_lvl+0x8c/0xd0 [ 16.814239] print_report+0x118/0x5d0 [ 16.814284] kasan_report_invalid_free+0xc0/0xe8 [ 16.814337] check_slab_allocation+0xd4/0x108 [ 16.814515] __kasan_slab_pre_free+0x2c/0x48 [ 16.814567] kfree+0xe8/0x3c8 [ 16.814752] kfree_sensitive+0x3c/0xb0 [ 16.814844] kmalloc_double_kzfree+0x168/0x308 [ 16.814939] kunit_try_run_case+0x170/0x3f0 [ 16.814987] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.815041] kthread+0x328/0x630 [ 16.815147] ret_from_fork+0x10/0x20 [ 16.815197] [ 16.815273] Allocated by task 192: [ 16.815323] kasan_save_stack+0x3c/0x68 [ 16.815366] kasan_save_track+0x20/0x40 [ 16.815404] kasan_save_alloc_info+0x40/0x58 [ 16.815444] __kasan_kmalloc+0xd4/0xd8 [ 16.815479] __kmalloc_cache_noprof+0x16c/0x3c0 [ 16.815527] kmalloc_double_kzfree+0xb8/0x308 [ 16.815565] kunit_try_run_case+0x170/0x3f0 [ 16.815603] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.815655] kthread+0x328/0x630 [ 16.815686] ret_from_fork+0x10/0x20 [ 16.815727] [ 16.815792] Freed by task 192: [ 16.815819] kasan_save_stack+0x3c/0x68 [ 16.816148] kasan_save_track+0x20/0x40 [ 16.816218] kasan_save_free_info+0x4c/0x78 [ 16.816257] __kasan_slab_free+0x6c/0x98 [ 16.816293] kfree+0x214/0x3c8 [ 16.816327] kfree_sensitive+0x80/0xb0 [ 16.816362] kmalloc_double_kzfree+0x11c/0x308 [ 16.816588] kunit_try_run_case+0x170/0x3f0 [ 16.816676] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.816821] kthread+0x328/0x630 [ 16.816959] ret_from_fork+0x10/0x20 [ 16.817066] [ 16.817197] The buggy address belongs to the object at fff00000c3e55180 [ 16.817197] which belongs to the cache kmalloc-16 of size 16 [ 16.817312] The buggy address is located 0 bytes inside of [ 16.817312] 16-byte region [fff00000c3e55180, fff00000c3e55190) [ 16.817460] [ 16.817510] The buggy address belongs to the physical page: [ 16.817543] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103e55 [ 16.817835] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 16.818026] page_type: f5(slab) [ 16.818133] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000 [ 16.818419] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 16.818576] page dumped because: kasan: bad access detected [ 16.818655] [ 16.818721] Memory state around the buggy address: [ 16.818828] fff00000c3e55080: 00 05 fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 16.818986] fff00000c3e55100: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 16.819071] >fff00000c3e55180: fa fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.819254] ^ [ 16.819477] fff00000c3e55200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.819545] fff00000c3e55280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.819587] ==================================================================
[ 12.643308] ================================================================== [ 12.644024] BUG: KASAN: double-free in kfree_sensitive+0x2e/0x90 [ 12.644259] Free of addr ffff8881025ee340 by task kunit_try_catch/209 [ 12.644462] [ 12.644551] CPU: 1 UID: 0 PID: 209 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 12.644594] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.644605] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.644626] Call Trace: [ 12.644644] <TASK> [ 12.644662] dump_stack_lvl+0x73/0xb0 [ 12.645255] print_report+0xd1/0x610 [ 12.645286] ? __virt_addr_valid+0x1db/0x2d0 [ 12.645310] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.645332] ? kfree_sensitive+0x2e/0x90 [ 12.645352] kasan_report_invalid_free+0x10a/0x130 [ 12.645377] ? kfree_sensitive+0x2e/0x90 [ 12.645399] ? kfree_sensitive+0x2e/0x90 [ 12.645418] check_slab_allocation+0x101/0x130 [ 12.645439] __kasan_slab_pre_free+0x28/0x40 [ 12.645459] kfree+0xf0/0x3f0 [ 12.645479] ? kfree_sensitive+0x2e/0x90 [ 12.645501] kfree_sensitive+0x2e/0x90 [ 12.645520] kmalloc_double_kzfree+0x19c/0x350 [ 12.645542] ? __pfx_kmalloc_double_kzfree+0x10/0x10 [ 12.645566] ? __schedule+0x10cc/0x2b60 [ 12.645605] ? __pfx_read_tsc+0x10/0x10 [ 12.645624] ? ktime_get_ts64+0x86/0x230 [ 12.645649] kunit_try_run_case+0x1a5/0x480 [ 12.645673] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.645694] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.645717] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.645740] ? __kthread_parkme+0x82/0x180 [ 12.645759] ? preempt_count_sub+0x50/0x80 [ 12.645783] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.645806] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.645840] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.645863] kthread+0x337/0x6f0 [ 12.645881] ? trace_preempt_on+0x20/0xc0 [ 12.645904] ? __pfx_kthread+0x10/0x10 [ 12.645923] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.645944] ? calculate_sigpending+0x7b/0xa0 [ 12.645967] ? __pfx_kthread+0x10/0x10 [ 12.645988] ret_from_fork+0x116/0x1d0 [ 12.646005] ? __pfx_kthread+0x10/0x10 [ 12.646024] ret_from_fork_asm+0x1a/0x30 [ 12.646067] </TASK> [ 12.646078] [ 12.662593] Allocated by task 209: [ 12.662757] kasan_save_stack+0x45/0x70 [ 12.663506] kasan_save_track+0x18/0x40 [ 12.663965] kasan_save_alloc_info+0x3b/0x50 [ 12.664317] __kasan_kmalloc+0xb7/0xc0 [ 12.664774] __kmalloc_cache_noprof+0x189/0x420 [ 12.665117] kmalloc_double_kzfree+0xa9/0x350 [ 12.665428] kunit_try_run_case+0x1a5/0x480 [ 12.665762] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.666124] kthread+0x337/0x6f0 [ 12.666304] ret_from_fork+0x116/0x1d0 [ 12.666486] ret_from_fork_asm+0x1a/0x30 [ 12.667009] [ 12.667115] Freed by task 209: [ 12.667444] kasan_save_stack+0x45/0x70 [ 12.667671] kasan_save_track+0x18/0x40 [ 12.668297] kasan_save_free_info+0x3f/0x60 [ 12.668502] __kasan_slab_free+0x56/0x70 [ 12.669150] kfree+0x222/0x3f0 [ 12.669322] kfree_sensitive+0x67/0x90 [ 12.669659] kmalloc_double_kzfree+0x12b/0x350 [ 12.669915] kunit_try_run_case+0x1a5/0x480 [ 12.670139] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.670392] kthread+0x337/0x6f0 [ 12.670552] ret_from_fork+0x116/0x1d0 [ 12.671076] ret_from_fork_asm+0x1a/0x30 [ 12.671246] [ 12.671520] The buggy address belongs to the object at ffff8881025ee340 [ 12.671520] which belongs to the cache kmalloc-16 of size 16 [ 12.672278] The buggy address is located 0 bytes inside of [ 12.672278] 16-byte region [ffff8881025ee340, ffff8881025ee350) [ 12.673243] [ 12.673348] The buggy address belongs to the physical page: [ 12.673560] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1025ee [ 12.674178] flags: 0x200000000000000(node=0|zone=2) [ 12.674548] page_type: f5(slab) [ 12.674890] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000 [ 12.675238] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 12.675568] page dumped because: kasan: bad access detected [ 12.675804] [ 12.676253] Memory state around the buggy address: [ 12.676447] ffff8881025ee200: 00 02 fc fc 00 02 fc fc 00 02 fc fc 00 02 fc fc [ 12.676970] ffff8881025ee280: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 12.677452] >ffff8881025ee300: fa fb fc fc fa fb fc fc fa fb fc fc fc fc fc fc [ 12.677844] ^ [ 12.678512] ffff8881025ee380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.679048] ffff8881025ee400: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.679485] ==================================================================