Date
July 2, 2025, 11:10 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 33.182056] ================================================================== [ 33.182131] BUG: KASAN: slab-use-after-free in strnlen+0x80/0x88 [ 33.182180] Read of size 1 at addr fff00000c993b210 by task kunit_try_catch/292 [ 33.182251] [ 33.182300] CPU: 1 UID: 0 PID: 292 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4-next-20250702 #1 PREEMPT [ 33.182392] Tainted: [B]=BAD_PAGE, [N]=TEST [ 33.182546] Hardware name: linux,dummy-virt (DT) [ 33.182681] Call trace: [ 33.182801] show_stack+0x20/0x38 (C) [ 33.182880] dump_stack_lvl+0x8c/0xd0 [ 33.182945] print_report+0x118/0x608 [ 33.183013] kasan_report+0xdc/0x128 [ 33.183114] strnlen+0x80/0x88 [ 33.183722] Allocated by task 292: [ 33.183757] kasan_save_stack+0x3c/0x68 [ 33.183803] kasan_save_track+0x20/0x40 [ 33.184560] ret_from_fork+0x10/0x20 [ 33.185567] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 33.185850] The buggy address belongs to the object at fff00000c993b200 [ 33.185850] which belongs to the cache kmalloc-32 of size 32 [ 33.186258] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 33.186731] fff00000c993b300: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 33.194843] dump_stack_lvl+0x8c/0xd0 [ 33.194907] print_report+0x118/0x608 [ 33.195137] kasan_report+0xdc/0x128 [ 33.195680] kasan_bitops_generic+0x110/0x1c8 [ 33.196864] kasan_save_alloc_info+0x40/0x58 [ 33.197242] kthread+0x328/0x630 [ 33.197890] The buggy address is located 8 bytes inside of [ 33.197890] allocated 9-byte region [fff00000c8432ec0, fff00000c8432ec9) [ 33.198963] [ 33.199450] >fff00000c8432e80: fa fb fc fc fa fb fc fc 00 01 fc fc fa fb fc fc [ 33.201252] ==================================================================
[ 25.339903] ================================================================== [ 25.340269] BUG: KASAN: slab-use-after-free in strnlen+0x73/0x80 [ 25.340534] Read of size 1 at addr ffff888105a1be50 by task kunit_try_catch/308 [ 25.340857] [ 25.341282] CPU: 0 UID: 0 PID: 308 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4-next-20250702 #1 PREEMPT(voluntary) [ 25.341352] Tainted: [B]=BAD_PAGE, [N]=TEST [ 25.341367] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 25.341392] Call Trace: [ 25.341415] <TASK> [ 25.341445] dump_stack_lvl+0x73/0xb0 [ 25.341478] print_report+0xd1/0x650 [ 25.341514] ? __virt_addr_valid+0x1db/0x2d0 [ 25.341540] ? strnlen+0x73/0x80 [ 25.341562] ? kasan_complete_mode_report_info+0x64/0x200 [ 25.341590] ? strnlen+0x73/0x80 [ 25.341610] kasan_report+0x141/0x180 [ 25.341641] ? strnlen+0x73/0x80 [ 25.341666] __asan_report_load1_noabort+0x18/0x20 [ 25.341690] strnlen+0x73/0x80 [ 25.341722] kasan_strings+0x615/0xe80 [ 25.341743] ? trace_hardirqs_on+0x37/0xe0 [ 25.341767] ? __pfx_kasan_strings+0x10/0x10 [ 25.341787] ? finish_task_switch.isra.0+0x153/0x700 [ 25.341811] ? __switch_to+0x47/0xf50 [ 25.341843] ? __schedule+0x10cc/0x2b60 [ 25.341865] ? __pfx_read_tsc+0x10/0x10 [ 25.341886] ? ktime_get_ts64+0x86/0x230 [ 25.341910] kunit_try_run_case+0x1a5/0x480 [ 25.341954] ? __pfx_kunit_try_run_case+0x10/0x10 [ 25.341977] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 25.342000] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 25.342022] ? __kthread_parkme+0x82/0x180 [ 25.342042] ? preempt_count_sub+0x50/0x80 [ 25.342082] ? __pfx_kunit_try_run_case+0x10/0x10 [ 25.342107] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 25.342132] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 25.342226] kthread+0x337/0x6f0 [ 25.342262] ? trace_preempt_on+0x20/0xc0 [ 25.342285] ? __pfx_kthread+0x10/0x10 [ 25.342305] ? _raw_spin_unlock_irq+0x47/0x80 [ 25.342330] ? calculate_sigpending+0x7b/0xa0 [ 25.342354] ? __pfx_kthread+0x10/0x10 [ 25.342375] ret_from_fork+0x116/0x1d0 [ 25.342404] ? __pfx_kthread+0x10/0x10 [ 25.342426] ret_from_fork_asm+0x1a/0x30 [ 25.342467] </TASK> [ 25.342480] [ 25.350284] Allocated by task 308: [ 25.350450] kasan_save_stack+0x45/0x70 [ 25.350654] kasan_save_track+0x18/0x40 [ 25.350800] kasan_save_alloc_info+0x3b/0x50 [ 25.351000] __kasan_kmalloc+0xb7/0xc0 [ 25.351194] __kmalloc_cache_noprof+0x189/0x420 [ 25.351391] kasan_strings+0xc0/0xe80 [ 25.351582] kunit_try_run_case+0x1a5/0x480 [ 25.351765] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 25.352397] kthread+0x337/0x6f0 [ 25.352560] ret_from_fork+0x116/0x1d0 [ 25.352746] ret_from_fork_asm+0x1a/0x30 [ 25.352971] [ 25.353068] Freed by task 308: [ 25.353265] kasan_save_stack+0x45/0x70 [ 25.353473] kasan_save_track+0x18/0x40 [ 25.353650] kasan_save_free_info+0x3f/0x60 [ 25.353861] __kasan_slab_free+0x56/0x70 [ 25.354021] kfree+0x222/0x3f0 [ 25.354147] kasan_strings+0x2aa/0xe80 [ 25.354330] kunit_try_run_case+0x1a5/0x480 [ 25.354477] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 25.354722] kthread+0x337/0x6f0 [ 25.354884] ret_from_fork+0x116/0x1d0 [ 25.355105] ret_from_fork_asm+0x1a/0x30 [ 25.355360] [ 25.355453] The buggy address belongs to the object at ffff888105a1be40 [ 25.355453] which belongs to the cache kmalloc-32 of size 32 [ 25.355991] The buggy address is located 16 bytes inside of [ 25.355991] freed 32-byte region [ffff888105a1be40, ffff888105a1be60) [ 25.357165] [ 25.357474] The buggy address belongs to the physical page: [ 25.358147] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105a1b [ 25.358673] flags: 0x200000000000000(node=0|zone=2) [ 25.358906] page_type: f5(slab) [ 25.359105] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 25.359489] raw: 0000000000000000 0000000000400040 00000000f5000000 0000000000000000 [ 25.359815] page dumped because: kasan: bad access detected [ 25.360101] [ 25.360260] Memory state around the buggy address: [ 25.360437] ffff888105a1bd00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 25.360734] ffff888105a1bd80: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 25.361089] >ffff888105a1be00: 00 00 07 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 25.361384] ^ [ 25.361867] ffff888105a1be80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 25.362302] ffff888105a1bf00: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 25.362631] ==================================================================
[ 25.083246] ================================================================== [ 25.083630] BUG: KASAN: slab-use-after-free in strnlen+0x73/0x80 [ 25.083939] Read of size 1 at addr ffff8881057feed0 by task kunit_try_catch/307 [ 25.084260] [ 25.084374] CPU: 1 UID: 0 PID: 307 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4-next-20250702 #1 PREEMPT(voluntary) [ 25.084420] Tainted: [B]=BAD_PAGE, [N]=TEST [ 25.084434] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 25.084455] Call Trace: [ 25.084469] <TASK> [ 25.084828] dump_stack_lvl+0x73/0xb0 [ 25.084871] print_report+0xd1/0x650 [ 25.084893] ? __virt_addr_valid+0x1db/0x2d0 [ 25.084915] ? strnlen+0x73/0x80 [ 25.084947] ? kasan_complete_mode_report_info+0x64/0x200 [ 25.084974] ? strnlen+0x73/0x80 [ 25.085006] kasan_report+0x141/0x180 [ 25.085027] ? strnlen+0x73/0x80 [ 25.085053] __asan_report_load1_noabort+0x18/0x20 [ 25.085088] strnlen+0x73/0x80 [ 25.085110] kasan_strings+0x615/0xe80 [ 25.085129] ? trace_hardirqs_on+0x37/0xe0 [ 25.085152] ? __pfx_kasan_strings+0x10/0x10 [ 25.085172] ? finish_task_switch.isra.0+0x153/0x700 [ 25.085194] ? __switch_to+0x47/0xf50 [ 25.085220] ? __schedule+0x10cc/0x2b60 [ 25.085241] ? __pfx_read_tsc+0x10/0x10 [ 25.085263] ? ktime_get_ts64+0x86/0x230 [ 25.085287] kunit_try_run_case+0x1a5/0x480 [ 25.085321] ? __pfx_kunit_try_run_case+0x10/0x10 [ 25.085345] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 25.085367] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 25.085388] ? __kthread_parkme+0x82/0x180 [ 25.085409] ? preempt_count_sub+0x50/0x80 [ 25.085432] ? __pfx_kunit_try_run_case+0x10/0x10 [ 25.085457] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 25.085499] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 25.085532] kthread+0x337/0x6f0 [ 25.085552] ? trace_preempt_on+0x20/0xc0 [ 25.085640] ? __pfx_kthread+0x10/0x10 [ 25.085678] ? _raw_spin_unlock_irq+0x47/0x80 [ 25.085702] ? calculate_sigpending+0x7b/0xa0 [ 25.085725] ? __pfx_kthread+0x10/0x10 [ 25.085760] ret_from_fork+0x116/0x1d0 [ 25.085780] ? __pfx_kthread+0x10/0x10 [ 25.085801] ret_from_fork_asm+0x1a/0x30 [ 25.085842] </TASK> [ 25.085853] [ 25.093066] Allocated by task 307: [ 25.093191] kasan_save_stack+0x45/0x70 [ 25.093408] kasan_save_track+0x18/0x40 [ 25.093617] kasan_save_alloc_info+0x3b/0x50 [ 25.093823] __kasan_kmalloc+0xb7/0xc0 [ 25.094002] __kmalloc_cache_noprof+0x189/0x420 [ 25.094212] kasan_strings+0xc0/0xe80 [ 25.094396] kunit_try_run_case+0x1a5/0x480 [ 25.094563] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 25.094736] kthread+0x337/0x6f0 [ 25.094851] ret_from_fork+0x116/0x1d0 [ 25.094975] ret_from_fork_asm+0x1a/0x30 [ 25.095151] [ 25.095239] Freed by task 307: [ 25.095400] kasan_save_stack+0x45/0x70 [ 25.095652] kasan_save_track+0x18/0x40 [ 25.095863] kasan_save_free_info+0x3f/0x60 [ 25.096067] __kasan_slab_free+0x56/0x70 [ 25.096275] kfree+0x222/0x3f0 [ 25.096443] kasan_strings+0x2aa/0xe80 [ 25.096659] kunit_try_run_case+0x1a5/0x480 [ 25.096864] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 25.097065] kthread+0x337/0x6f0 [ 25.097247] ret_from_fork+0x116/0x1d0 [ 25.097435] ret_from_fork_asm+0x1a/0x30 [ 25.097634] [ 25.097734] The buggy address belongs to the object at ffff8881057feec0 [ 25.097734] which belongs to the cache kmalloc-32 of size 32 [ 25.098229] The buggy address is located 16 bytes inside of [ 25.098229] freed 32-byte region [ffff8881057feec0, ffff8881057feee0) [ 25.098632] [ 25.098699] The buggy address belongs to the physical page: [ 25.098866] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1057fe [ 25.099099] flags: 0x200000000000000(node=0|zone=2) [ 25.099333] page_type: f5(slab) [ 25.099537] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 25.099929] raw: 0000000000000000 0000000000400040 00000000f5000000 0000000000000000 [ 25.100329] page dumped because: kasan: bad access detected [ 25.100603] [ 25.100691] Memory state around the buggy address: [ 25.100907] ffff8881057fed80: 00 00 00 fc fc fc fc fc 00 00 00 04 fc fc fc fc [ 25.101215] ffff8881057fee00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 25.101529] >ffff8881057fee80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 25.101736] ^ [ 25.101913] ffff8881057fef00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 25.102242] ffff8881057fef80: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 25.102603] ==================================================================