Date
July 10, 2025, 6:10 p.m.
Environment | |
---|---|
qemu-arm64 | |
qemu-x86_64 |
[ 17.101697] ================================================================== [ 17.101766] BUG: KASAN: double-free in kfree_sensitive+0x3c/0xb0 [ 17.102521] Free of addr fff00000c4498e80 by task kunit_try_catch/192 [ 17.102583] [ 17.102809] CPU: 1 UID: 0 PID: 192 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT [ 17.103020] Tainted: [B]=BAD_PAGE, [N]=TEST [ 17.103049] Hardware name: linux,dummy-virt (DT) [ 17.103286] Call trace: [ 17.103447] show_stack+0x20/0x38 (C) [ 17.103638] dump_stack_lvl+0x8c/0xd0 [ 17.103920] print_report+0x118/0x608 [ 17.104038] kasan_report_invalid_free+0xc0/0xe8 [ 17.104251] check_slab_allocation+0xd4/0x108 [ 17.104429] __kasan_slab_pre_free+0x2c/0x48 [ 17.104616] kfree+0xe8/0x3c8 [ 17.104794] kfree_sensitive+0x3c/0xb0 [ 17.105282] kmalloc_double_kzfree+0x168/0x308 [ 17.105372] kunit_try_run_case+0x170/0x3f0 [ 17.105890] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.106001] kthread+0x328/0x630 [ 17.106053] ret_from_fork+0x10/0x20 [ 17.106160] [ 17.106180] Allocated by task 192: [ 17.106231] kasan_save_stack+0x3c/0x68 [ 17.106301] kasan_save_track+0x20/0x40 [ 17.106352] kasan_save_alloc_info+0x40/0x58 [ 17.106403] __kasan_kmalloc+0xd4/0xd8 [ 17.106441] __kmalloc_cache_noprof+0x16c/0x3c0 [ 17.106481] kmalloc_double_kzfree+0xb8/0x308 [ 17.106519] kunit_try_run_case+0x170/0x3f0 [ 17.106566] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.106611] kthread+0x328/0x630 [ 17.106654] ret_from_fork+0x10/0x20 [ 17.106691] [ 17.106709] Freed by task 192: [ 17.106733] kasan_save_stack+0x3c/0x68 [ 17.106770] kasan_save_track+0x20/0x40 [ 17.106808] kasan_save_free_info+0x4c/0x78 [ 17.106848] __kasan_slab_free+0x6c/0x98 [ 17.106887] kfree+0x214/0x3c8 [ 17.106919] kfree_sensitive+0x80/0xb0 [ 17.106957] kmalloc_double_kzfree+0x11c/0x308 [ 17.107004] kunit_try_run_case+0x170/0x3f0 [ 17.107058] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.107102] kthread+0x328/0x630 [ 17.107140] ret_from_fork+0x10/0x20 [ 17.107176] [ 17.107194] The buggy address belongs to the object at fff00000c4498e80 [ 17.107194] which belongs to the cache kmalloc-16 of size 16 [ 17.107251] The buggy address is located 0 bytes inside of [ 17.107251] 16-byte region [fff00000c4498e80, fff00000c4498e90) [ 17.107309] [ 17.107358] The buggy address belongs to the physical page: [ 17.107410] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x104498 [ 17.107469] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 17.107514] page_type: f5(slab) [ 17.107566] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000 [ 17.107630] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 17.107679] page dumped because: kasan: bad access detected [ 17.107710] [ 17.107729] Memory state around the buggy address: [ 17.107759] fff00000c4498d80: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 17.107803] fff00000c4498e00: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 17.107844] >fff00000c4498e80: fa fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.107883] ^ [ 17.107912] fff00000c4498f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.107953] fff00000c4498f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.108001] ==================================================================
[ 12.860582] ================================================================== [ 12.861158] BUG: KASAN: double-free in kfree_sensitive+0x2e/0x90 [ 12.861450] Free of addr ffff888101debe80 by task kunit_try_catch/209 [ 12.861647] [ 12.861730] CPU: 0 UID: 0 PID: 209 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 12.861769] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.861780] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.861798] Call Trace: [ 12.861812] <TASK> [ 12.861826] dump_stack_lvl+0x73/0xb0 [ 12.861853] print_report+0xd1/0x650 [ 12.861874] ? __virt_addr_valid+0x1db/0x2d0 [ 12.861896] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.861919] ? kfree_sensitive+0x2e/0x90 [ 12.861939] kasan_report_invalid_free+0x10a/0x130 [ 12.861963] ? kfree_sensitive+0x2e/0x90 [ 12.861984] ? kfree_sensitive+0x2e/0x90 [ 12.862003] check_slab_allocation+0x101/0x130 [ 12.862026] __kasan_slab_pre_free+0x28/0x40 [ 12.862059] kfree+0xf0/0x3f0 [ 12.862079] ? kfree_sensitive+0x2e/0x90 [ 12.862101] kfree_sensitive+0x2e/0x90 [ 12.862120] kmalloc_double_kzfree+0x19c/0x350 [ 12.862375] ? __pfx_kmalloc_double_kzfree+0x10/0x10 [ 12.862400] ? __schedule+0x10cc/0x2b60 [ 12.862421] ? __pfx_read_tsc+0x10/0x10 [ 12.862442] ? ktime_get_ts64+0x86/0x230 [ 12.862465] kunit_try_run_case+0x1a5/0x480 [ 12.862490] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.862512] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.862536] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.862559] ? __kthread_parkme+0x82/0x180 [ 12.862579] ? preempt_count_sub+0x50/0x80 [ 12.862601] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.862626] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.862649] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.862674] kthread+0x337/0x6f0 [ 12.862692] ? trace_preempt_on+0x20/0xc0 [ 12.862715] ? __pfx_kthread+0x10/0x10 [ 12.862734] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.862755] ? calculate_sigpending+0x7b/0xa0 [ 12.862778] ? __pfx_kthread+0x10/0x10 [ 12.862799] ret_from_fork+0x116/0x1d0 [ 12.862817] ? __pfx_kthread+0x10/0x10 [ 12.862876] ret_from_fork_asm+0x1a/0x30 [ 12.862906] </TASK> [ 12.862916] [ 12.870785] Allocated by task 209: [ 12.870966] kasan_save_stack+0x45/0x70 [ 12.871283] kasan_save_track+0x18/0x40 [ 12.871418] kasan_save_alloc_info+0x3b/0x50 [ 12.871564] __kasan_kmalloc+0xb7/0xc0 [ 12.871695] __kmalloc_cache_noprof+0x189/0x420 [ 12.871849] kmalloc_double_kzfree+0xa9/0x350 [ 12.872217] kunit_try_run_case+0x1a5/0x480 [ 12.872433] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.872691] kthread+0x337/0x6f0 [ 12.872862] ret_from_fork+0x116/0x1d0 [ 12.873181] ret_from_fork_asm+0x1a/0x30 [ 12.873470] [ 12.873568] Freed by task 209: [ 12.873716] kasan_save_stack+0x45/0x70 [ 12.874115] kasan_save_track+0x18/0x40 [ 12.874338] kasan_save_free_info+0x3f/0x60 [ 12.874521] __kasan_slab_free+0x56/0x70 [ 12.874678] kfree+0x222/0x3f0 [ 12.874795] kfree_sensitive+0x67/0x90 [ 12.875219] kmalloc_double_kzfree+0x12b/0x350 [ 12.875461] kunit_try_run_case+0x1a5/0x480 [ 12.875664] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.876042] kthread+0x337/0x6f0 [ 12.876168] ret_from_fork+0x116/0x1d0 [ 12.876302] ret_from_fork_asm+0x1a/0x30 [ 12.876442] [ 12.876516] The buggy address belongs to the object at ffff888101debe80 [ 12.876516] which belongs to the cache kmalloc-16 of size 16 [ 12.876868] The buggy address is located 0 bytes inside of [ 12.876868] 16-byte region [ffff888101debe80, ffff888101debe90) [ 12.877370] [ 12.877467] The buggy address belongs to the physical page: [ 12.877720] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101deb [ 12.878110] flags: 0x200000000000000(node=0|zone=2) [ 12.878349] page_type: f5(slab) [ 12.878483] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000 [ 12.878714] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 12.879044] page dumped because: kasan: bad access detected [ 12.879291] [ 12.879381] Memory state around the buggy address: [ 12.879597] ffff888101debd80: 00 02 fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 12.879904] ffff888101debe00: 00 05 fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 12.880268] >ffff888101debe80: fa fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.880528] ^ [ 12.880640] ffff888101debf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.881119] ffff888101debf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.881764] ==================================================================