[   25.369917] ==================================================================
[   25.370195] BUG: KASAN: slab-use-after-free in kasan_strings+0xcbc/0xe80
[   25.370529] Read of size 1 at addr ffff88810627a650 by task kunit_try_catch/307
[   25.371031] 
[   25.371134] CPU: 1 UID: 0 PID: 307 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc5-next-20250708 #1 PREEMPT(voluntary) 
[   25.371187] Tainted: [B]=BAD_PAGE, [N]=TEST
[   25.371200] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   25.371223] Call Trace:
[   25.371256]  <TASK>
[   25.371279]  dump_stack_lvl+0x73/0xb0
[   25.371310]  print_report+0xd1/0x610
[   25.371336]  ? __virt_addr_valid+0x1db/0x2d0
[   25.371363]  ? kasan_strings+0xcbc/0xe80
[   25.371387]  ? kasan_complete_mode_report_info+0x64/0x200
[   25.371418]  ? kasan_strings+0xcbc/0xe80
[   25.371439]  kasan_report+0x141/0x180
[   25.371463]  ? kasan_strings+0xcbc/0xe80
[   25.371489]  __asan_report_load1_noabort+0x18/0x20
[   25.371516]  kasan_strings+0xcbc/0xe80
[   25.371538]  ? trace_hardirqs_on+0x37/0xe0
[   25.371562]  ? __pfx_kasan_strings+0x10/0x10
[   25.371585]  ? __kasan_check_write+0x18/0x20
[   25.371611]  ? queued_spin_lock_slowpath+0x116/0xb40
[   25.371634]  ? irqentry_exit+0x2a/0x60
[   25.371656]  ? sysvec_apic_timer_interrupt+0x50/0x90
[   25.371680]  ? trace_hardirqs_on+0x37/0xe0
[   25.371704]  ? __pfx_read_tsc+0x10/0x10
[   25.371729]  ? ktime_get_ts64+0x86/0x230
[   25.371833]  kunit_try_run_case+0x1a5/0x480
[   25.371862]  ? __pfx_kunit_try_run_case+0x10/0x10
[   25.371885]  ? queued_spin_lock_slowpath+0x116/0xb40
[   25.371907]  ? __kthread_parkme+0x82/0x180
[   25.371929]  ? preempt_count_sub+0x50/0x80
[   25.371954]  ? __pfx_kunit_try_run_case+0x10/0x10
[   25.371977]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   25.372005]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   25.372032]  kthread+0x337/0x6f0
[   25.372053]  ? trace_preempt_on+0x20/0xc0
[   25.372078]  ? __pfx_kthread+0x10/0x10
[   25.372101]  ? _raw_spin_unlock_irq+0x47/0x80
[   25.372129]  ? calculate_sigpending+0x7b/0xa0
[   25.372158]  ? __pfx_kthread+0x10/0x10
[   25.372181]  ret_from_fork+0x116/0x1d0
[   25.372202]  ? __pfx_kthread+0x10/0x10
[   25.372224]  ret_from_fork_asm+0x1a/0x30
[   25.372272]  </TASK>
[   25.372283] 
[   25.379914] Allocated by task 307:
[   25.380151]  kasan_save_stack+0x45/0x70
[   25.380358]  kasan_save_track+0x18/0x40
[   25.380527]  kasan_save_alloc_info+0x3b/0x50
[   25.380716]  __kasan_kmalloc+0xb7/0xc0
[   25.380875]  __kmalloc_cache_noprof+0x189/0x420
[   25.381142]  kasan_strings+0xc0/0xe80
[   25.381389]  kunit_try_run_case+0x1a5/0x480
[   25.381571]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   25.381743]  kthread+0x337/0x6f0
[   25.381884]  ret_from_fork+0x116/0x1d0
[   25.382119]  ret_from_fork_asm+0x1a/0x30
[   25.382311] 
[   25.382375] Freed by task 307:
[   25.382482]  kasan_save_stack+0x45/0x70
[   25.382644]  kasan_save_track+0x18/0x40
[   25.382830]  kasan_save_free_info+0x3f/0x60
[   25.383033]  __kasan_slab_free+0x56/0x70
[   25.383193]  kfree+0x222/0x3f0
[   25.383362]  kasan_strings+0x2aa/0xe80
[   25.383506]  kunit_try_run_case+0x1a5/0x480
[   25.383706]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   25.383896]  kthread+0x337/0x6f0
[   25.384139]  ret_from_fork+0x116/0x1d0
[   25.384491]  ret_from_fork_asm+0x1a/0x30
[   25.384672] 
[   25.384739] The buggy address belongs to the object at ffff88810627a640
[   25.384739]  which belongs to the cache kmalloc-32 of size 32
[   25.385265] The buggy address is located 16 bytes inside of
[   25.385265]  freed 32-byte region [ffff88810627a640, ffff88810627a660)
[   25.385609] 
[   25.385680] The buggy address belongs to the physical page:
[   25.385847] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10627a
[   25.386081] flags: 0x200000000000000(node=0|zone=2)
[   25.386270] page_type: f5(slab)
[   25.386431] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000
[   25.386831] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000
[   25.387160] page dumped because: kasan: bad access detected
[   25.387415] 
[   25.387500] Memory state around the buggy address:
[   25.387713]  ffff88810627a500: fa fb fb fb fc fc fc fc 00 00 07 fc fc fc fc fc
[   25.388441]  ffff88810627a580: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc
[   25.388662] >ffff88810627a600: 00 00 07 fc fc fc fc fc fa fb fb fb fc fc fc fc
[   25.389215]                                                  ^
[   25.389494]  ffff88810627a680: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
[   25.389892]  ffff88810627a700: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc
[   25.390107] ==================================================================