Date
June 17, 2025, 3:40 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 22.107528] ================================================================== [ 22.107702] BUG: KASAN: double-free in kfree_sensitive+0x3c/0xb0 [ 22.107845] Free of addr fff00000c58ac2a0 by task kunit_try_catch/194 [ 22.107952] [ 22.108040] CPU: 0 UID: 0 PID: 194 Comm: kunit_try_catch Tainted: G B N 6.15.3-rc1 #1 PREEMPT [ 22.108263] Tainted: [B]=BAD_PAGE, [N]=TEST [ 22.108330] Hardware name: linux,dummy-virt (DT) [ 22.108414] Call trace: [ 22.108471] show_stack+0x20/0x38 (C) [ 22.108592] dump_stack_lvl+0x8c/0xd0 [ 22.108706] print_report+0x118/0x608 [ 22.109865] kasan_report_invalid_free+0xc0/0xe8 [ 22.110196] check_slab_allocation+0xd4/0x108 [ 22.110424] __kasan_slab_pre_free+0x2c/0x48 [ 22.110651] kfree+0xe8/0x3c8 [ 22.110845] kfree_sensitive+0x3c/0xb0 [ 22.111190] kmalloc_double_kzfree+0x168/0x308 [ 22.111580] kunit_try_run_case+0x170/0x3f0 [ 22.112320] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 22.112580] kthread+0x328/0x630 [ 22.112765] ret_from_fork+0x10/0x20 [ 22.112895] [ 22.112943] Allocated by task 194: [ 22.113026] kasan_save_stack+0x3c/0x68 [ 22.113177] kasan_save_track+0x20/0x40 [ 22.113278] kasan_save_alloc_info+0x40/0x58 [ 22.113350] __kasan_kmalloc+0xd4/0xd8 [ 22.113409] __kmalloc_cache_noprof+0x16c/0x3c0 [ 22.113480] kmalloc_double_kzfree+0xb8/0x308 [ 22.113563] kunit_try_run_case+0x170/0x3f0 [ 22.113671] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 22.113843] kthread+0x328/0x630 [ 22.113938] ret_from_fork+0x10/0x20 [ 22.114029] [ 22.114103] Freed by task 194: [ 22.114168] kasan_save_stack+0x3c/0x68 [ 22.114259] kasan_save_track+0x20/0x40 [ 22.114353] kasan_save_free_info+0x4c/0x78 [ 22.114483] __kasan_slab_free+0x6c/0x98 [ 22.114585] kfree+0x214/0x3c8 [ 22.114694] kfree_sensitive+0x80/0xb0 [ 22.114786] kmalloc_double_kzfree+0x11c/0x308 [ 22.114882] kunit_try_run_case+0x170/0x3f0 [ 22.115026] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 22.115429] kthread+0x328/0x630 [ 22.115630] ret_from_fork+0x10/0x20 [ 22.115982] [ 22.116056] The buggy address belongs to the object at fff00000c58ac2a0 [ 22.116056] which belongs to the cache kmalloc-16 of size 16 [ 22.116297] The buggy address is located 0 bytes inside of [ 22.116297] 16-byte region [fff00000c58ac2a0, fff00000c58ac2b0) [ 22.116521] [ 22.116594] The buggy address belongs to the physical page: [ 22.116675] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1058ac [ 22.116873] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 22.117055] page_type: f5(slab) [ 22.117202] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000 [ 22.117359] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 22.117459] page dumped because: kasan: bad access detected [ 22.117584] [ 22.117644] Memory state around the buggy address: [ 22.118134] fff00000c58ac180: 00 04 fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 22.118268] fff00000c58ac200: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 22.118382] >fff00000c58ac280: fa fb fc fc fa fb fc fc fc fc fc fc fc fc fc fc [ 22.118481] ^ [ 22.118562] fff00000c58ac300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 22.118666] fff00000c58ac380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 22.118791] ==================================================================
[ 19.857546] ================================================================== [ 19.858225] BUG: KASAN: double-free in kfree_sensitive+0x2e/0x90 [ 19.858765] Free of addr ffff8881026cd0a0 by task kunit_try_catch/212 [ 19.859840] [ 19.860282] CPU: 0 UID: 0 PID: 212 Comm: kunit_try_catch Tainted: G B N 6.15.3-rc1 #1 PREEMPT(voluntary) [ 19.860447] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.860506] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 19.860582] Call Trace: [ 19.860633] <TASK> [ 19.860708] dump_stack_lvl+0x73/0xb0 [ 19.862522] print_report+0xd1/0x650 [ 19.862655] ? __virt_addr_valid+0x1db/0x2d0 [ 19.863386] ? kasan_complete_mode_report_info+0x64/0x200 [ 19.863472] ? kfree_sensitive+0x2e/0x90 [ 19.863543] kasan_report_invalid_free+0x10a/0x130 [ 19.863621] ? kfree_sensitive+0x2e/0x90 [ 19.863698] ? kfree_sensitive+0x2e/0x90 [ 19.863765] check_slab_allocation+0x101/0x130 [ 19.863837] __kasan_slab_pre_free+0x28/0x40 [ 19.863927] kfree+0xf0/0x3f0 [ 19.865528] ? kfree_sensitive+0x2e/0x90 [ 19.865591] kfree_sensitive+0x2e/0x90 [ 19.865643] kmalloc_double_kzfree+0x19c/0x350 [ 19.865699] ? __pfx_kmalloc_double_kzfree+0x10/0x10 [ 19.865756] ? __schedule+0x10cc/0x2b60 [ 19.865811] ? __pfx_read_tsc+0x10/0x10 [ 19.865860] ? ktime_get_ts64+0x86/0x230 [ 19.865921] kunit_try_run_case+0x1a5/0x480 [ 19.866121] ? __pfx_kunit_try_run_case+0x10/0x10 [ 19.866177] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 19.866235] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 19.866365] ? __kthread_parkme+0x82/0x180 [ 19.866443] ? preempt_count_sub+0x50/0x80 [ 19.866508] ? __pfx_kunit_try_run_case+0x10/0x10 [ 19.866565] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 19.866631] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 19.866700] kthread+0x337/0x6f0 [ 19.866747] ? trace_preempt_on+0x20/0xc0 [ 19.866816] ? __pfx_kthread+0x10/0x10 [ 19.866871] ? _raw_spin_unlock_irq+0x47/0x80 [ 19.866934] ? calculate_sigpending+0x7b/0xa0 [ 19.867142] ? __pfx_kthread+0x10/0x10 [ 19.867194] ret_from_fork+0x41/0x80 [ 19.867258] ? __pfx_kthread+0x10/0x10 [ 19.867332] ret_from_fork_asm+0x1a/0x30 [ 19.867408] </TASK> [ 19.867434] [ 19.886432] Allocated by task 212: [ 19.887222] kasan_save_stack+0x45/0x70 [ 19.887708] kasan_save_track+0x18/0x40 [ 19.888825] kasan_save_alloc_info+0x3b/0x50 [ 19.889196] __kasan_kmalloc+0xb7/0xc0 [ 19.889518] __kmalloc_cache_noprof+0x189/0x420 [ 19.889854] kmalloc_double_kzfree+0xa9/0x350 [ 19.890270] kunit_try_run_case+0x1a5/0x480 [ 19.891643] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 19.892512] kthread+0x337/0x6f0 [ 19.892885] ret_from_fork+0x41/0x80 [ 19.893537] ret_from_fork_asm+0x1a/0x30 [ 19.894795] [ 19.895227] Freed by task 212: [ 19.895761] kasan_save_stack+0x45/0x70 [ 19.896458] kasan_save_track+0x18/0x40 [ 19.896855] kasan_save_free_info+0x3f/0x60 [ 19.897523] __kasan_slab_free+0x56/0x70 [ 19.897907] kfree+0x222/0x3f0 [ 19.898496] kfree_sensitive+0x67/0x90 [ 19.898910] kmalloc_double_kzfree+0x12b/0x350 [ 19.900425] kunit_try_run_case+0x1a5/0x480 [ 19.900891] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 19.901676] kthread+0x337/0x6f0 [ 19.902211] ret_from_fork+0x41/0x80 [ 19.902559] ret_from_fork_asm+0x1a/0x30 [ 19.903248] [ 19.903512] The buggy address belongs to the object at ffff8881026cd0a0 [ 19.903512] which belongs to the cache kmalloc-16 of size 16 [ 19.905450] The buggy address is located 0 bytes inside of [ 19.905450] 16-byte region [ffff8881026cd0a0, ffff8881026cd0b0) [ 19.906437] [ 19.906540] The buggy address belongs to the physical page: [ 19.906733] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1026cd [ 19.907204] flags: 0x200000000000000(node=0|zone=2) [ 19.908820] page_type: f5(slab) [ 19.910063] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000 [ 19.910817] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 19.911865] page dumped because: kasan: bad access detected [ 19.912510] [ 19.913005] Memory state around the buggy address: [ 19.914007] ffff8881026ccf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.914690] ffff8881026cd000: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 19.915238] >ffff8881026cd080: fa fb fc fc fa fb fc fc fc fc fc fc fc fc fc fc [ 19.915850] ^ [ 19.917132] ffff8881026cd100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.917803] ffff8881026cd180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.918622] ==================================================================