Date
July 13, 2025, 11:09 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 18.914721] ================================================================== [ 18.915029] BUG: KASAN: slab-use-after-free in strlen+0xa8/0xb0 [ 18.915119] Read of size 1 at addr fff00000c5ae3c90 by task kunit_try_catch/260 [ 18.915173] [ 18.915316] CPU: 1 UID: 0 PID: 260 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT [ 18.915689] Tainted: [B]=BAD_PAGE, [N]=TEST [ 18.915782] Hardware name: linux,dummy-virt (DT) [ 18.915840] Call trace: [ 18.915865] show_stack+0x20/0x38 (C) [ 18.915918] dump_stack_lvl+0x8c/0xd0 [ 18.916175] print_report+0x118/0x5d0 [ 18.916249] kasan_report+0xdc/0x128 [ 18.916298] __asan_report_load1_noabort+0x20/0x30 [ 18.916405] strlen+0xa8/0xb0 [ 18.916537] kasan_strings+0x418/0xb00 [ 18.916627] kunit_try_run_case+0x170/0x3f0 [ 18.917087] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.917223] kthread+0x328/0x630 [ 18.917308] ret_from_fork+0x10/0x20 [ 18.917760] [ 18.917827] Allocated by task 260: [ 18.917865] kasan_save_stack+0x3c/0x68 [ 18.917952] kasan_save_track+0x20/0x40 [ 18.918008] kasan_save_alloc_info+0x40/0x58 [ 18.918051] __kasan_kmalloc+0xd4/0xd8 [ 18.918386] __kmalloc_cache_noprof+0x16c/0x3c0 [ 18.918513] kasan_strings+0xc8/0xb00 [ 18.918551] kunit_try_run_case+0x170/0x3f0 [ 18.918597] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.918819] kthread+0x328/0x630 [ 18.918862] ret_from_fork+0x10/0x20 [ 18.918903] [ 18.920117] Freed by task 260: [ 18.920157] kasan_save_stack+0x3c/0x68 [ 18.920221] kasan_save_track+0x20/0x40 [ 18.920260] kasan_save_free_info+0x4c/0x78 [ 18.920302] __kasan_slab_free+0x6c/0x98 [ 18.920689] kfree+0x214/0x3c8 [ 18.920732] kasan_strings+0x24c/0xb00 [ 18.920975] kunit_try_run_case+0x170/0x3f0 [ 18.921402] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.921463] kthread+0x328/0x630 [ 18.921511] ret_from_fork+0x10/0x20 [ 18.921550] [ 18.921571] The buggy address belongs to the object at fff00000c5ae3c80 [ 18.921571] which belongs to the cache kmalloc-32 of size 32 [ 18.921635] The buggy address is located 16 bytes inside of [ 18.921635] freed 32-byte region [fff00000c5ae3c80, fff00000c5ae3ca0) [ 18.921699] [ 18.921729] The buggy address belongs to the physical page: [ 18.921763] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105ae3 [ 18.922202] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 18.922318] page_type: f5(slab) [ 18.922360] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 18.922488] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 18.922813] page dumped because: kasan: bad access detected [ 18.924049] [ 18.924125] Memory state around the buggy address: [ 18.924275] fff00000c5ae3b80: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 18.924361] fff00000c5ae3c00: 00 00 07 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 18.924410] >fff00000c5ae3c80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 18.924452] ^ [ 18.924484] fff00000c5ae3d00: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 18.924530] fff00000c5ae3d80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 18.924571] ==================================================================
[ 14.599630] ================================================================== [ 14.599933] BUG: KASAN: slab-use-after-free in strlen+0x8f/0xb0 [ 14.600345] Read of size 1 at addr ffff888103445d50 by task kunit_try_catch/277 [ 14.600893] [ 14.601008] CPU: 1 UID: 0 PID: 277 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 14.601051] Tainted: [B]=BAD_PAGE, [N]=TEST [ 14.601063] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 14.601084] Call Trace: [ 14.601098] <TASK> [ 14.601112] dump_stack_lvl+0x73/0xb0 [ 14.601141] print_report+0xd1/0x610 [ 14.601164] ? __virt_addr_valid+0x1db/0x2d0 [ 14.601188] ? strlen+0x8f/0xb0 [ 14.601205] ? kasan_complete_mode_report_info+0x64/0x200 [ 14.601229] ? strlen+0x8f/0xb0 [ 14.601247] kasan_report+0x141/0x180 [ 14.601270] ? strlen+0x8f/0xb0 [ 14.601292] __asan_report_load1_noabort+0x18/0x20 [ 14.601318] strlen+0x8f/0xb0 [ 14.601336] kasan_strings+0x57b/0xe80 [ 14.601356] ? trace_hardirqs_on+0x37/0xe0 [ 14.601381] ? __pfx_kasan_strings+0x10/0x10 [ 14.601402] ? finish_task_switch.isra.0+0x153/0x700 [ 14.601426] ? __switch_to+0x47/0xf50 [ 14.601464] ? __schedule+0x10cc/0x2b60 [ 14.601521] ? __pfx_read_tsc+0x10/0x10 [ 14.601557] ? ktime_get_ts64+0x86/0x230 [ 14.601582] kunit_try_run_case+0x1a5/0x480 [ 14.601621] ? __pfx_kunit_try_run_case+0x10/0x10 [ 14.601659] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 14.601685] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 14.601710] ? __kthread_parkme+0x82/0x180 [ 14.601732] ? preempt_count_sub+0x50/0x80 [ 14.601756] ? __pfx_kunit_try_run_case+0x10/0x10 [ 14.601783] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 14.601809] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 14.601851] kthread+0x337/0x6f0 [ 14.601871] ? trace_preempt_on+0x20/0xc0 [ 14.601908] ? __pfx_kthread+0x10/0x10 [ 14.601929] ? _raw_spin_unlock_irq+0x47/0x80 [ 14.601953] ? calculate_sigpending+0x7b/0xa0 [ 14.601978] ? __pfx_kthread+0x10/0x10 [ 14.602000] ret_from_fork+0x116/0x1d0 [ 14.602020] ? __pfx_kthread+0x10/0x10 [ 14.602041] ret_from_fork_asm+0x1a/0x30 [ 14.602073] </TASK> [ 14.602083] [ 14.610973] Allocated by task 277: [ 14.611171] kasan_save_stack+0x45/0x70 [ 14.611407] kasan_save_track+0x18/0x40 [ 14.611717] kasan_save_alloc_info+0x3b/0x50 [ 14.611933] __kasan_kmalloc+0xb7/0xc0 [ 14.612126] __kmalloc_cache_noprof+0x189/0x420 [ 14.612349] kasan_strings+0xc0/0xe80 [ 14.612498] kunit_try_run_case+0x1a5/0x480 [ 14.612709] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 14.613197] kthread+0x337/0x6f0 [ 14.613374] ret_from_fork+0x116/0x1d0 [ 14.613693] ret_from_fork_asm+0x1a/0x30 [ 14.613871] [ 14.613988] Freed by task 277: [ 14.614126] kasan_save_stack+0x45/0x70 [ 14.614338] kasan_save_track+0x18/0x40 [ 14.614642] kasan_save_free_info+0x3f/0x60 [ 14.614873] __kasan_slab_free+0x56/0x70 [ 14.615053] kfree+0x222/0x3f0 [ 14.615207] kasan_strings+0x2aa/0xe80 [ 14.615381] kunit_try_run_case+0x1a5/0x480 [ 14.615706] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 14.615928] kthread+0x337/0x6f0 [ 14.616122] ret_from_fork+0x116/0x1d0 [ 14.616294] ret_from_fork_asm+0x1a/0x30 [ 14.616496] [ 14.616597] The buggy address belongs to the object at ffff888103445d40 [ 14.616597] which belongs to the cache kmalloc-32 of size 32 [ 14.616977] The buggy address is located 16 bytes inside of [ 14.616977] freed 32-byte region [ffff888103445d40, ffff888103445d60) [ 14.617419] [ 14.617525] The buggy address belongs to the physical page: [ 14.617784] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103445 [ 14.618140] flags: 0x200000000000000(node=0|zone=2) [ 14.618357] page_type: f5(slab) [ 14.618905] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 14.619241] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 14.619502] page dumped because: kasan: bad access detected [ 14.619813] [ 14.619886] Memory state around the buggy address: [ 14.620043] ffff888103445c00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 14.620372] ffff888103445c80: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 14.620937] >ffff888103445d00: 00 00 07 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 14.621274] ^ [ 14.621669] ffff888103445d80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 14.621990] ffff888103445e00: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 14.622315] ==================================================================
[ 14.827938] ================================================================== [ 14.828630] BUG: KASAN: slab-use-after-free in strlen+0x8f/0xb0 [ 14.828974] Read of size 1 at addr ffff8881025b0450 by task kunit_try_catch/277 [ 14.829427] [ 14.829537] CPU: 0 UID: 0 PID: 277 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 14.829582] Tainted: [B]=BAD_PAGE, [N]=TEST [ 14.829596] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 14.829616] Call Trace: [ 14.829632] <TASK> [ 14.829649] dump_stack_lvl+0x73/0xb0 [ 14.829677] print_report+0xd1/0x610 [ 14.830068] ? __virt_addr_valid+0x1db/0x2d0 [ 14.830104] ? strlen+0x8f/0xb0 [ 14.830136] ? kasan_complete_mode_report_info+0x64/0x200 [ 14.830161] ? strlen+0x8f/0xb0 [ 14.830179] kasan_report+0x141/0x180 [ 14.830202] ? strlen+0x8f/0xb0 [ 14.830224] __asan_report_load1_noabort+0x18/0x20 [ 14.830250] strlen+0x8f/0xb0 [ 14.830268] kasan_strings+0x57b/0xe80 [ 14.830288] ? trace_hardirqs_on+0x37/0xe0 [ 14.830313] ? __pfx_kasan_strings+0x10/0x10 [ 14.830333] ? finish_task_switch.isra.0+0x153/0x700 [ 14.830357] ? __switch_to+0x47/0xf50 [ 14.830382] ? __schedule+0x10cc/0x2b60 [ 14.830404] ? __pfx_read_tsc+0x10/0x10 [ 14.830426] ? ktime_get_ts64+0x86/0x230 [ 14.830451] kunit_try_run_case+0x1a5/0x480 [ 14.830475] ? __pfx_kunit_try_run_case+0x10/0x10 [ 14.830500] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 14.830524] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 14.830550] ? __kthread_parkme+0x82/0x180 [ 14.830570] ? preempt_count_sub+0x50/0x80 [ 14.830594] ? __pfx_kunit_try_run_case+0x10/0x10 [ 14.830620] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 14.830697] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 14.830731] kthread+0x337/0x6f0 [ 14.830751] ? trace_preempt_on+0x20/0xc0 [ 14.830774] ? __pfx_kthread+0x10/0x10 [ 14.830795] ? _raw_spin_unlock_irq+0x47/0x80 [ 14.830817] ? calculate_sigpending+0x7b/0xa0 [ 14.830842] ? __pfx_kthread+0x10/0x10 [ 14.830865] ret_from_fork+0x116/0x1d0 [ 14.830885] ? __pfx_kthread+0x10/0x10 [ 14.830905] ret_from_fork_asm+0x1a/0x30 [ 14.830937] </TASK> [ 14.830946] [ 14.841990] Allocated by task 277: [ 14.842455] kasan_save_stack+0x45/0x70 [ 14.842806] kasan_save_track+0x18/0x40 [ 14.842988] kasan_save_alloc_info+0x3b/0x50 [ 14.843409] __kasan_kmalloc+0xb7/0xc0 [ 14.843593] __kmalloc_cache_noprof+0x189/0x420 [ 14.844022] kasan_strings+0xc0/0xe80 [ 14.844197] kunit_try_run_case+0x1a5/0x480 [ 14.844474] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 14.844898] kthread+0x337/0x6f0 [ 14.845089] ret_from_fork+0x116/0x1d0 [ 14.845396] ret_from_fork_asm+0x1a/0x30 [ 14.845585] [ 14.845670] Freed by task 277: [ 14.845974] kasan_save_stack+0x45/0x70 [ 14.846202] kasan_save_track+0x18/0x40 [ 14.846729] kasan_save_free_info+0x3f/0x60 [ 14.847010] __kasan_slab_free+0x56/0x70 [ 14.847238] kfree+0x222/0x3f0 [ 14.847393] kasan_strings+0x2aa/0xe80 [ 14.847570] kunit_try_run_case+0x1a5/0x480 [ 14.848039] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 14.848278] kthread+0x337/0x6f0 [ 14.848543] ret_from_fork+0x116/0x1d0 [ 14.849072] ret_from_fork_asm+0x1a/0x30 [ 14.849305] [ 14.849385] The buggy address belongs to the object at ffff8881025b0440 [ 14.849385] which belongs to the cache kmalloc-32 of size 32 [ 14.850288] The buggy address is located 16 bytes inside of [ 14.850288] freed 32-byte region [ffff8881025b0440, ffff8881025b0460) [ 14.850942] [ 14.851024] The buggy address belongs to the physical page: [ 14.851480] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1025b0 [ 14.851942] flags: 0x200000000000000(node=0|zone=2) [ 14.852346] page_type: f5(slab) [ 14.852525] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 14.852985] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 14.853495] page dumped because: kasan: bad access detected [ 14.854002] [ 14.854099] Memory state around the buggy address: [ 14.854491] ffff8881025b0300: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 14.854974] ffff8881025b0380: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 14.855425] >ffff8881025b0400: 00 00 07 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 14.855918] ^ [ 14.856176] ffff8881025b0480: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 14.856481] ffff8881025b0500: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 14.856779] ==================================================================