Date
July 14, 2025, 10:38 a.m.
| Environment | |
|---|---|
| e850-96 | |
| qemu-arm64 | |
| qemu-x86_64 |
[ 56.910296] ================================================================== [ 56.917322] BUG: KASAN: slab-use-after-free in strnlen+0x80/0x88 [ 56.923309] Read of size 1 at addr ffff000808564890 by task kunit_try_catch/343 [ 56.930600] [ 56.932085] CPU: 2 UID: 0 PID: 343 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6-next-20250714 #1 PREEMPT [ 56.932139] Tainted: [B]=BAD_PAGE, [N]=TEST [ 56.932156] Hardware name: WinLink E850-96 board (DT) [ 56.932178] Call trace: [ 56.932193] show_stack+0x20/0x38 (C) [ 56.932225] dump_stack_lvl+0x8c/0xd0 [ 56.932257] print_report+0x118/0x5d0 [ 56.932286] kasan_report+0xdc/0x128 [ 56.932314] __asan_report_load1_noabort+0x20/0x30 [ 56.932351] strnlen+0x80/0x88 [ 56.932384] kasan_strings+0x478/0xb00 [ 56.932416] kunit_try_run_case+0x170/0x3f0 [ 56.932452] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 56.932487] kthread+0x328/0x630 [ 56.932518] ret_from_fork+0x10/0x20 [ 56.932552] [ 56.998741] Allocated by task 343: [ 57.002128] kasan_save_stack+0x3c/0x68 [ 57.005946] kasan_save_track+0x20/0x40 [ 57.009766] kasan_save_alloc_info+0x40/0x58 [ 57.014019] __kasan_kmalloc+0xd4/0xd8 [ 57.017752] __kmalloc_cache_noprof+0x16c/0x3c0 [ 57.022265] kasan_strings+0xc8/0xb00 [ 57.025911] kunit_try_run_case+0x170/0x3f0 [ 57.030079] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 57.035547] kthread+0x328/0x630 [ 57.038758] ret_from_fork+0x10/0x20 [ 57.042317] [ 57.043793] Freed by task 343: [ 57.046831] kasan_save_stack+0x3c/0x68 [ 57.050650] kasan_save_track+0x20/0x40 [ 57.054469] kasan_save_free_info+0x4c/0x78 [ 57.058636] __kasan_slab_free+0x6c/0x98 [ 57.062543] kfree+0x214/0x3c8 [ 57.065581] kasan_strings+0x24c/0xb00 [ 57.069313] kunit_try_run_case+0x170/0x3f0 [ 57.073480] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 57.078948] kthread+0x328/0x630 [ 57.082160] ret_from_fork+0x10/0x20 [ 57.085719] [ 57.087195] The buggy address belongs to the object at ffff000808564880 [ 57.087195] which belongs to the cache kmalloc-32 of size 32 [ 57.099522] The buggy address is located 16 bytes inside of [ 57.099522] freed 32-byte region [ffff000808564880, ffff0008085648a0) [ 57.111587] [ 57.113065] The buggy address belongs to the physical page: [ 57.118620] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x888564 [ 57.126605] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 57.133114] page_type: f5(slab) [ 57.136249] raw: 0bfffe0000000000 ffff000800002780 dead000000000122 0000000000000000 [ 57.143971] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 57.151692] page dumped because: kasan: bad access detected [ 57.157246] [ 57.158721] Memory state around the buggy address: [ 57.163500] ffff000808564780: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 57.170704] ffff000808564800: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 57.177909] >ffff000808564880: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 57.185110] ^ [ 57.188846] ffff000808564900: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 57.196051] ffff000808564980: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 57.203252] ==================================================================
[ 32.003528] ================================================================== [ 32.003853] BUG: KASAN: slab-use-after-free in strnlen+0x80/0x88 [ 32.004200] Read of size 1 at addr fff00000c65343d0 by task kunit_try_catch/290 [ 32.004283] [ 32.004427] CPU: 0 UID: 0 PID: 290 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6-next-20250714 #1 PREEMPT [ 32.004552] Tainted: [B]=BAD_PAGE, [N]=TEST [ 32.004587] Hardware name: linux,dummy-virt (DT) [ 32.004618] Call trace: [ 32.004644] show_stack+0x20/0x38 (C) [ 32.004850] dump_stack_lvl+0x8c/0xd0 [ 32.005079] print_report+0x118/0x5d0 [ 32.005163] kasan_report+0xdc/0x128 [ 32.005260] __asan_report_load1_noabort+0x20/0x30 [ 32.005443] strnlen+0x80/0x88 [ 32.005622] kasan_strings+0x478/0xb00 [ 32.005698] kunit_try_run_case+0x170/0x3f0 [ 32.005777] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 32.006177] kthread+0x328/0x630 [ 32.006406] ret_from_fork+0x10/0x20 [ 32.006722] [ 32.006892] Allocated by task 290: [ 32.006941] kasan_save_stack+0x3c/0x68 [ 32.007154] kasan_save_track+0x20/0x40 [ 32.007378] kasan_save_alloc_info+0x40/0x58 [ 32.007466] __kasan_kmalloc+0xd4/0xd8 [ 32.007579] __kmalloc_cache_noprof+0x16c/0x3c0 [ 32.007685] kasan_strings+0xc8/0xb00 [ 32.007855] kunit_try_run_case+0x170/0x3f0 [ 32.007918] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 32.007960] kthread+0x328/0x630 [ 32.008075] ret_from_fork+0x10/0x20 [ 32.008117] [ 32.008150] Freed by task 290: [ 32.008183] kasan_save_stack+0x3c/0x68 [ 32.008471] kasan_save_track+0x20/0x40 [ 32.008647] kasan_save_free_info+0x4c/0x78 [ 32.008848] __kasan_slab_free+0x6c/0x98 [ 32.009081] kfree+0x214/0x3c8 [ 32.009158] kasan_strings+0x24c/0xb00 [ 32.009306] kunit_try_run_case+0x170/0x3f0 [ 32.009419] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 32.009566] kthread+0x328/0x630 [ 32.009659] ret_from_fork+0x10/0x20 [ 32.009793] [ 32.009816] The buggy address belongs to the object at fff00000c65343c0 [ 32.009816] which belongs to the cache kmalloc-32 of size 32 [ 32.009923] The buggy address is located 16 bytes inside of [ 32.009923] freed 32-byte region [fff00000c65343c0, fff00000c65343e0) [ 32.010423] [ 32.010474] The buggy address belongs to the physical page: [ 32.010528] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106534 [ 32.010753] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 32.010812] page_type: f5(slab) [ 32.010988] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 32.011061] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 32.011104] page dumped because: kasan: bad access detected [ 32.011148] [ 32.011180] Memory state around the buggy address: [ 32.011216] fff00000c6534280: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 32.011259] fff00000c6534300: 00 00 00 fc fc fc fc fc 00 00 07 fc fc fc fc fc [ 32.011315] >fff00000c6534380: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 32.011365] ^ [ 32.011409] fff00000c6534400: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 32.011461] fff00000c6534480: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 32.011502] ==================================================================
[ 26.361513] ================================================================== [ 26.361859] BUG: KASAN: slab-use-after-free in strnlen+0x73/0x80 [ 26.362391] Read of size 1 at addr ffff888103eba090 by task kunit_try_catch/308 [ 26.362734] [ 26.362837] CPU: 0 UID: 0 PID: 308 Comm: kunit_try_catch Tainted: G B W N 6.16.0-rc6-next-20250714 #1 PREEMPT(voluntary) [ 26.362889] Tainted: [B]=BAD_PAGE, [W]=WARN, [N]=TEST [ 26.362903] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 26.362929] Call Trace: [ 26.362949] <TASK> [ 26.362968] dump_stack_lvl+0x73/0xb0 [ 26.362997] print_report+0xd1/0x610 [ 26.363022] ? __virt_addr_valid+0x1db/0x2d0 [ 26.363045] ? strnlen+0x73/0x80 [ 26.363063] ? kasan_complete_mode_report_info+0x64/0x200 [ 26.363089] ? strnlen+0x73/0x80 [ 26.363107] kasan_report+0x141/0x180 [ 26.363129] ? strnlen+0x73/0x80 [ 26.363151] __asan_report_load1_noabort+0x18/0x20 [ 26.363175] strnlen+0x73/0x80 [ 26.363195] kasan_strings+0x615/0xe80 [ 26.363215] ? trace_hardirqs_on+0x37/0xe0 [ 26.363240] ? __pfx_kasan_strings+0x10/0x10 [ 26.363259] ? finish_task_switch.isra.0+0x153/0x700 [ 26.363280] ? __switch_to+0x47/0xf80 [ 26.363306] ? __schedule+0x10cc/0x2b60 [ 26.363328] ? __pfx_read_tsc+0x10/0x10 [ 26.363348] ? ktime_get_ts64+0x86/0x230 [ 26.363373] kunit_try_run_case+0x1a5/0x480 [ 26.363395] ? __pfx_kunit_try_run_case+0x10/0x10 [ 26.363415] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 26.363438] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 26.363461] ? __kthread_parkme+0x82/0x180 [ 26.363481] ? preempt_count_sub+0x50/0x80 [ 26.363503] ? __pfx_kunit_try_run_case+0x10/0x10 [ 26.363525] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 26.363549] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 26.363574] kthread+0x337/0x6f0 [ 26.363594] ? trace_preempt_on+0x20/0xc0 [ 26.363615] ? __pfx_kthread+0x10/0x10 [ 26.363636] ? _raw_spin_unlock_irq+0x47/0x80 [ 26.363668] ? calculate_sigpending+0x7b/0xa0 [ 26.363692] ? __pfx_kthread+0x10/0x10 [ 26.363713] ret_from_fork+0x116/0x1d0 [ 26.363732] ? __pfx_kthread+0x10/0x10 [ 26.363825] ret_from_fork_asm+0x1a/0x30 [ 26.363856] </TASK> [ 26.363867] [ 26.371711] Allocated by task 308: [ 26.371914] kasan_save_stack+0x45/0x70 [ 26.372098] kasan_save_track+0x18/0x40 [ 26.372238] kasan_save_alloc_info+0x3b/0x50 [ 26.372383] __kasan_kmalloc+0xb7/0xc0 [ 26.372509] __kmalloc_cache_noprof+0x189/0x420 [ 26.372668] kasan_strings+0xc0/0xe80 [ 26.372792] kunit_try_run_case+0x1a5/0x480 [ 26.372930] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 26.373099] kthread+0x337/0x6f0 [ 26.373217] ret_from_fork+0x116/0x1d0 [ 26.373451] ret_from_fork_asm+0x1a/0x30 [ 26.373639] [ 26.373812] Freed by task 308: [ 26.373985] kasan_save_stack+0x45/0x70 [ 26.374441] kasan_save_track+0x18/0x40 [ 26.374625] kasan_save_free_info+0x3f/0x60 [ 26.374956] __kasan_slab_free+0x56/0x70 [ 26.375198] kfree+0x222/0x3f0 [ 26.375355] kasan_strings+0x2aa/0xe80 [ 26.375537] kunit_try_run_case+0x1a5/0x480 [ 26.375754] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 26.375932] kthread+0x337/0x6f0 [ 26.376140] ret_from_fork+0x116/0x1d0 [ 26.376321] ret_from_fork_asm+0x1a/0x30 [ 26.376505] [ 26.376577] The buggy address belongs to the object at ffff888103eba080 [ 26.376577] which belongs to the cache kmalloc-32 of size 32 [ 26.377112] The buggy address is located 16 bytes inside of [ 26.377112] freed 32-byte region [ffff888103eba080, ffff888103eba0a0) [ 26.377516] [ 26.377584] The buggy address belongs to the physical page: [ 26.377775] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103eba [ 26.378287] flags: 0x200000000000000(node=0|zone=2) [ 26.378679] page_type: f5(slab) [ 26.378941] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 26.379517] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 26.379929] page dumped because: kasan: bad access detected [ 26.380114] [ 26.380178] Memory state around the buggy address: [ 26.380329] ffff888103eb9f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 26.380566] ffff888103eba000: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 26.380888] >ffff888103eba080: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 26.381203] ^ [ 26.381378] ffff888103eba100: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 26.381688] ffff888103eba180: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 26.382090] ==================================================================