Date
July 9, 2025, 12:11 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 21.923505] ================================================================== [ 21.923569] BUG: KASAN: slab-use-after-free in strnlen+0x80/0x88 [ 21.923809] Read of size 1 at addr fff00000c6e97810 by task kunit_try_catch/260 [ 21.923946] [ 21.923983] CPU: 1 UID: 0 PID: 260 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT [ 21.924213] Tainted: [B]=BAD_PAGE, [N]=TEST [ 21.924261] Hardware name: linux,dummy-virt (DT) [ 21.924299] Call trace: [ 21.924326] show_stack+0x20/0x38 (C) [ 21.924534] dump_stack_lvl+0x8c/0xd0 [ 21.924638] print_report+0x118/0x608 [ 21.924764] kasan_report+0xdc/0x128 [ 21.924852] __asan_report_load1_noabort+0x20/0x30 [ 21.925080] strnlen+0x80/0x88 [ 21.925211] kasan_strings+0x478/0xb00 [ 21.925298] kunit_try_run_case+0x170/0x3f0 [ 21.925454] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 21.925541] kthread+0x328/0x630 [ 21.925762] ret_from_fork+0x10/0x20 [ 21.925918] [ 21.925982] Allocated by task 260: [ 21.926115] kasan_save_stack+0x3c/0x68 [ 21.926193] kasan_save_track+0x20/0x40 [ 21.926304] kasan_save_alloc_info+0x40/0x58 [ 21.926356] __kasan_kmalloc+0xd4/0xd8 [ 21.926580] __kmalloc_cache_noprof+0x16c/0x3c0 [ 21.926734] kasan_strings+0xc8/0xb00 [ 21.926838] kunit_try_run_case+0x170/0x3f0 [ 21.926924] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 21.927191] kthread+0x328/0x630 [ 21.927327] ret_from_fork+0x10/0x20 [ 21.927464] [ 21.927530] Freed by task 260: [ 21.927623] kasan_save_stack+0x3c/0x68 [ 21.927812] kasan_save_track+0x20/0x40 [ 21.927921] kasan_save_free_info+0x4c/0x78 [ 21.928056] __kasan_slab_free+0x6c/0x98 [ 21.928126] kfree+0x214/0x3c8 [ 21.928246] kasan_strings+0x24c/0xb00 [ 21.928325] kunit_try_run_case+0x170/0x3f0 [ 21.928528] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 21.928648] kthread+0x328/0x630 [ 21.928816] ret_from_fork+0x10/0x20 [ 21.928880] [ 21.928955] The buggy address belongs to the object at fff00000c6e97800 [ 21.928955] which belongs to the cache kmalloc-32 of size 32 [ 21.929038] The buggy address is located 16 bytes inside of [ 21.929038] freed 32-byte region [fff00000c6e97800, fff00000c6e97820) [ 21.929123] [ 21.929147] The buggy address belongs to the physical page: [ 21.929190] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106e97 [ 21.929248] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 21.929311] page_type: f5(slab) [ 21.929353] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 21.929431] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 21.929477] page dumped because: kasan: bad access detected [ 21.929517] [ 21.929540] Memory state around the buggy address: [ 21.929584] fff00000c6e97700: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 21.929631] fff00000c6e97780: 00 00 00 fc fc fc fc fc 00 00 07 fc fc fc fc fc [ 21.929677] >fff00000c6e97800: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 21.929727] ^ [ 21.929759] fff00000c6e97880: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 21.929805] fff00000c6e97900: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 21.929848] ==================================================================
[ 14.704379] ================================================================== [ 14.704724] BUG: KASAN: slab-use-after-free in strnlen+0x73/0x80 [ 14.705120] Read of size 1 at addr ffff888102ab8ed0 by task kunit_try_catch/276 [ 14.705480] [ 14.705629] CPU: 1 UID: 0 PID: 276 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 14.705673] Tainted: [B]=BAD_PAGE, [N]=TEST [ 14.705685] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 14.705706] Call Trace: [ 14.705724] <TASK> [ 14.705741] dump_stack_lvl+0x73/0xb0 [ 14.705806] print_report+0xd1/0x650 [ 14.705830] ? __virt_addr_valid+0x1db/0x2d0 [ 14.705853] ? strnlen+0x73/0x80 [ 14.705870] ? kasan_complete_mode_report_info+0x64/0x200 [ 14.705894] ? strnlen+0x73/0x80 [ 14.706012] kasan_report+0x141/0x180 [ 14.706041] ? strnlen+0x73/0x80 [ 14.706102] __asan_report_load1_noabort+0x18/0x20 [ 14.706129] strnlen+0x73/0x80 [ 14.706148] kasan_strings+0x615/0xe80 [ 14.706168] ? trace_hardirqs_on+0x37/0xe0 [ 14.706192] ? __pfx_kasan_strings+0x10/0x10 [ 14.706242] ? finish_task_switch.isra.0+0x153/0x700 [ 14.706280] ? __switch_to+0x47/0xf50 [ 14.706306] ? __schedule+0x10cc/0x2b60 [ 14.706328] ? __pfx_read_tsc+0x10/0x10 [ 14.706349] ? ktime_get_ts64+0x86/0x230 [ 14.706374] kunit_try_run_case+0x1a5/0x480 [ 14.706398] ? __pfx_kunit_try_run_case+0x10/0x10 [ 14.706421] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 14.706446] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 14.706471] ? __kthread_parkme+0x82/0x180 [ 14.706491] ? preempt_count_sub+0x50/0x80 [ 14.706514] ? __pfx_kunit_try_run_case+0x10/0x10 [ 14.706540] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 14.706564] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 14.706590] kthread+0x337/0x6f0 [ 14.706609] ? trace_preempt_on+0x20/0xc0 [ 14.706631] ? __pfx_kthread+0x10/0x10 [ 14.706651] ? _raw_spin_unlock_irq+0x47/0x80 [ 14.706673] ? calculate_sigpending+0x7b/0xa0 [ 14.706697] ? __pfx_kthread+0x10/0x10 [ 14.706723] ret_from_fork+0x116/0x1d0 [ 14.706740] ? __pfx_kthread+0x10/0x10 [ 14.706761] ret_from_fork_asm+0x1a/0x30 [ 14.706792] </TASK> [ 14.706803] [ 14.715761] Allocated by task 276: [ 14.716042] kasan_save_stack+0x45/0x70 [ 14.716324] kasan_save_track+0x18/0x40 [ 14.716549] kasan_save_alloc_info+0x3b/0x50 [ 14.716737] __kasan_kmalloc+0xb7/0xc0 [ 14.717036] __kmalloc_cache_noprof+0x189/0x420 [ 14.717296] kasan_strings+0xc0/0xe80 [ 14.717515] kunit_try_run_case+0x1a5/0x480 [ 14.717738] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 14.718074] kthread+0x337/0x6f0 [ 14.718307] ret_from_fork+0x116/0x1d0 [ 14.718522] ret_from_fork_asm+0x1a/0x30 [ 14.718737] [ 14.718831] Freed by task 276: [ 14.719089] kasan_save_stack+0x45/0x70 [ 14.719300] kasan_save_track+0x18/0x40 [ 14.719537] kasan_save_free_info+0x3f/0x60 [ 14.719768] __kasan_slab_free+0x56/0x70 [ 14.720227] kfree+0x222/0x3f0 [ 14.720426] kasan_strings+0x2aa/0xe80 [ 14.720615] kunit_try_run_case+0x1a5/0x480 [ 14.720790] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 14.721156] kthread+0x337/0x6f0 [ 14.721367] ret_from_fork+0x116/0x1d0 [ 14.721581] ret_from_fork_asm+0x1a/0x30 [ 14.721761] [ 14.721886] The buggy address belongs to the object at ffff888102ab8ec0 [ 14.721886] which belongs to the cache kmalloc-32 of size 32 [ 14.722518] The buggy address is located 16 bytes inside of [ 14.722518] freed 32-byte region [ffff888102ab8ec0, ffff888102ab8ee0) [ 14.723064] [ 14.723143] The buggy address belongs to the physical page: [ 14.723430] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102ab8 [ 14.723888] flags: 0x200000000000000(node=0|zone=2) [ 14.724171] page_type: f5(slab) [ 14.724322] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 14.724733] raw: 0000000000000000 0000000000400040 00000000f5000000 0000000000000000 [ 14.725276] page dumped because: kasan: bad access detected [ 14.725539] [ 14.725650] Memory state around the buggy address: [ 14.725895] ffff888102ab8d80: 00 00 07 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 14.726196] ffff888102ab8e00: 00 00 00 fc fc fc fc fc 00 00 07 fc fc fc fc fc [ 14.726531] >ffff888102ab8e80: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 14.726856] ^ [ 14.727203] ffff888102ab8f00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 14.727500] ffff888102ab8f80: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 14.727867] ==================================================================