Date
July 11, 2025, 11:09 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 19.035709] ================================================================== [ 19.035767] BUG: KASAN: slab-use-after-free in kasan_strings+0x95c/0xb00 [ 19.035861] Read of size 1 at addr fff00000c5908250 by task kunit_try_catch/260 [ 19.035915] [ 19.035948] CPU: 1 UID: 0 PID: 260 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT [ 19.036033] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.036063] Hardware name: linux,dummy-virt (DT) [ 19.036106] Call trace: [ 19.036140] show_stack+0x20/0x38 (C) [ 19.036191] dump_stack_lvl+0x8c/0xd0 [ 19.036241] print_report+0x118/0x608 [ 19.036298] kasan_report+0xdc/0x128 [ 19.036355] __asan_report_load1_noabort+0x20/0x30 [ 19.036416] kasan_strings+0x95c/0xb00 [ 19.036462] kunit_try_run_case+0x170/0x3f0 [ 19.036509] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.036565] kthread+0x328/0x630 [ 19.036609] ret_from_fork+0x10/0x20 [ 19.036657] [ 19.036686] Allocated by task 260: [ 19.036715] kasan_save_stack+0x3c/0x68 [ 19.036757] kasan_save_track+0x20/0x40 [ 19.036796] kasan_save_alloc_info+0x40/0x58 [ 19.036836] __kasan_kmalloc+0xd4/0xd8 [ 19.036885] __kmalloc_cache_noprof+0x16c/0x3c0 [ 19.036926] kasan_strings+0xc8/0xb00 [ 19.036963] kunit_try_run_case+0x170/0x3f0 [ 19.037001] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.037046] kthread+0x328/0x630 [ 19.037079] ret_from_fork+0x10/0x20 [ 19.037117] [ 19.037180] Freed by task 260: [ 19.037452] kasan_save_stack+0x3c/0x68 [ 19.037503] kasan_save_track+0x20/0x40 [ 19.037600] kasan_save_free_info+0x4c/0x78 [ 19.037911] __kasan_slab_free+0x6c/0x98 [ 19.037978] kfree+0x214/0x3c8 [ 19.038017] kasan_strings+0x24c/0xb00 [ 19.038054] kunit_try_run_case+0x170/0x3f0 [ 19.038094] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.038139] kthread+0x328/0x630 [ 19.038215] ret_from_fork+0x10/0x20 [ 19.038252] [ 19.038275] The buggy address belongs to the object at fff00000c5908240 [ 19.038275] which belongs to the cache kmalloc-32 of size 32 [ 19.038429] The buggy address is located 16 bytes inside of [ 19.038429] freed 32-byte region [fff00000c5908240, fff00000c5908260) [ 19.038500] [ 19.038549] The buggy address belongs to the physical page: [ 19.038585] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105908 [ 19.038638] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 19.038689] page_type: f5(slab) [ 19.038729] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 19.038779] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 19.038852] page dumped because: kasan: bad access detected [ 19.038884] [ 19.039046] Memory state around the buggy address: [ 19.039149] fff00000c5908100: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 19.039242] fff00000c5908180: 00 00 00 fc fc fc fc fc 00 00 07 fc fc fc fc fc [ 19.039339] >fff00000c5908200: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 19.039380] ^ [ 19.039442] fff00000c5908280: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 19.039486] fff00000c5908300: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 19.039527] ==================================================================
[ 14.359520] ================================================================== [ 14.359755] BUG: KASAN: slab-use-after-free in kasan_strings+0xcbc/0xe80 [ 14.359988] Read of size 1 at addr ffff888102a16ad0 by task kunit_try_catch/276 [ 14.360694] [ 14.360871] CPU: 1 UID: 0 PID: 276 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 14.360916] Tainted: [B]=BAD_PAGE, [N]=TEST [ 14.360939] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 14.361368] Call Trace: [ 14.361386] <TASK> [ 14.361404] dump_stack_lvl+0x73/0xb0 [ 14.361436] print_report+0xd1/0x650 [ 14.361457] ? __virt_addr_valid+0x1db/0x2d0 [ 14.361480] ? kasan_strings+0xcbc/0xe80 [ 14.361501] ? kasan_complete_mode_report_info+0x64/0x200 [ 14.361524] ? kasan_strings+0xcbc/0xe80 [ 14.361546] kasan_report+0x141/0x180 [ 14.361568] ? kasan_strings+0xcbc/0xe80 [ 14.361594] __asan_report_load1_noabort+0x18/0x20 [ 14.361619] kasan_strings+0xcbc/0xe80 [ 14.361638] ? trace_hardirqs_on+0x37/0xe0 [ 14.361662] ? __pfx_kasan_strings+0x10/0x10 [ 14.361682] ? finish_task_switch.isra.0+0x153/0x700 [ 14.361705] ? __switch_to+0x47/0xf50 [ 14.361730] ? __schedule+0x10cc/0x2b60 [ 14.361765] ? __pfx_read_tsc+0x10/0x10 [ 14.361786] ? ktime_get_ts64+0x86/0x230 [ 14.361809] kunit_try_run_case+0x1a5/0x480 [ 14.361834] ? __pfx_kunit_try_run_case+0x10/0x10 [ 14.361856] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 14.361879] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 14.361903] ? __kthread_parkme+0x82/0x180 [ 14.361935] ? preempt_count_sub+0x50/0x80 [ 14.361958] ? __pfx_kunit_try_run_case+0x10/0x10 [ 14.361982] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 14.362007] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 14.362100] kthread+0x337/0x6f0 [ 14.362121] ? trace_preempt_on+0x20/0xc0 [ 14.362144] ? __pfx_kthread+0x10/0x10 [ 14.362165] ? _raw_spin_unlock_irq+0x47/0x80 [ 14.362187] ? calculate_sigpending+0x7b/0xa0 [ 14.362211] ? __pfx_kthread+0x10/0x10 [ 14.362232] ret_from_fork+0x116/0x1d0 [ 14.362251] ? __pfx_kthread+0x10/0x10 [ 14.362271] ret_from_fork_asm+0x1a/0x30 [ 14.362303] </TASK> [ 14.362313] [ 14.376709] Allocated by task 276: [ 14.377041] kasan_save_stack+0x45/0x70 [ 14.377417] kasan_save_track+0x18/0x40 [ 14.377883] kasan_save_alloc_info+0x3b/0x50 [ 14.378499] __kasan_kmalloc+0xb7/0xc0 [ 14.378955] __kmalloc_cache_noprof+0x189/0x420 [ 14.379439] kasan_strings+0xc0/0xe80 [ 14.379735] kunit_try_run_case+0x1a5/0x480 [ 14.380161] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 14.380341] kthread+0x337/0x6f0 [ 14.380457] ret_from_fork+0x116/0x1d0 [ 14.380586] ret_from_fork_asm+0x1a/0x30 [ 14.380722] [ 14.380809] Freed by task 276: [ 14.380917] kasan_save_stack+0x45/0x70 [ 14.381186] kasan_save_track+0x18/0x40 [ 14.381384] kasan_save_free_info+0x3f/0x60 [ 14.381591] __kasan_slab_free+0x56/0x70 [ 14.381799] kfree+0x222/0x3f0 [ 14.381952] kasan_strings+0x2aa/0xe80 [ 14.382309] kunit_try_run_case+0x1a5/0x480 [ 14.382467] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 14.382643] kthread+0x337/0x6f0 [ 14.382759] ret_from_fork+0x116/0x1d0 [ 14.382936] ret_from_fork_asm+0x1a/0x30 [ 14.383156] [ 14.383252] The buggy address belongs to the object at ffff888102a16ac0 [ 14.383252] which belongs to the cache kmalloc-32 of size 32 [ 14.383916] The buggy address is located 16 bytes inside of [ 14.383916] freed 32-byte region [ffff888102a16ac0, ffff888102a16ae0) [ 14.384453] [ 14.384526] The buggy address belongs to the physical page: [ 14.384823] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102a16 [ 14.385326] flags: 0x200000000000000(node=0|zone=2) [ 14.385481] page_type: f5(slab) [ 14.385634] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 14.386008] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 14.386395] page dumped because: kasan: bad access detected [ 14.386648] [ 14.386741] Memory state around the buggy address: [ 14.386965] ffff888102a16980: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 14.387306] ffff888102a16a00: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 14.387620] >ffff888102a16a80: 00 00 07 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 14.387957] ^ [ 14.388127] ffff888102a16b00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 14.388883] ffff888102a16b80: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 14.389347] ==================================================================