[   30.021117] ==================================================================
[   30.021714] BUG: KASAN: slab-out-of-bounds in _copy_from_user+0x32/0x90
[   30.022096] Write of size 121 at addr ffff888106253800 by task kunit_try_catch/334
[   30.022567] 
[   30.022684] CPU: 1 UID: 0 PID: 334 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc7-next-20250725 #1 PREEMPT(voluntary) 
[   30.022739] Tainted: [B]=BAD_PAGE, [N]=TEST
[   30.022753] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   30.022780] Call Trace:
[   30.022794]  <TASK>
[   30.022816]  dump_stack_lvl+0x73/0xb0
[   30.022873]  print_report+0xd1/0x640
[   30.022900]  ? __virt_addr_valid+0x1db/0x2d0
[   30.022926]  ? _copy_from_user+0x32/0x90
[   30.022959]  ? kasan_complete_mode_report_info+0x2a/0x200
[   30.022989]  ? _copy_from_user+0x32/0x90
[   30.023012]  kasan_report+0x141/0x180
[   30.023036]  ? _copy_from_user+0x32/0x90
[   30.023099]  kasan_check_range+0x10c/0x1c0
[   30.023126]  __kasan_check_write+0x18/0x20
[   30.023152]  _copy_from_user+0x32/0x90
[   30.023175]  copy_user_test_oob+0x2be/0x10f0
[   30.023262]  ? __pfx_copy_user_test_oob+0x10/0x10
[   30.023288]  ? finish_task_switch.isra.0+0x153/0x700
[   30.023313]  ? __switch_to+0x47/0xf80
[   30.023343]  ? __schedule+0x10da/0x2b60
[   30.023367]  ? __pfx_read_tsc+0x10/0x10
[   30.023410]  ? ktime_get_ts64+0x86/0x230
[   30.023437]  kunit_try_run_case+0x1a5/0x480
[   30.023464]  ? __pfx_kunit_try_run_case+0x10/0x10
[   30.023488]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   30.023511]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   30.023540]  ? __kthread_parkme+0x82/0x180
[   30.023562]  ? preempt_count_sub+0x50/0x80
[   30.023603]  ? __pfx_kunit_try_run_case+0x10/0x10
[   30.023629]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   30.023655]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   30.023680]  kthread+0x337/0x6f0
[   30.023702]  ? trace_preempt_on+0x20/0xc0
[   30.023727]  ? __pfx_kthread+0x10/0x10
[   30.023750]  ? _raw_spin_unlock_irq+0x47/0x80
[   30.023804]  ? calculate_sigpending+0x7b/0xa0
[   30.023837]  ? __pfx_kthread+0x10/0x10
[   30.023860]  ret_from_fork+0x116/0x1d0
[   30.023881]  ? __pfx_kthread+0x10/0x10
[   30.023904]  ret_from_fork_asm+0x1a/0x30
[   30.023937]  </TASK>
[   30.023961] 
[   30.031768] Allocated by task 334:
[   30.032029]  kasan_save_stack+0x45/0x70
[   30.032279]  kasan_save_track+0x18/0x40
[   30.032469]  kasan_save_alloc_info+0x3b/0x50
[   30.032672]  __kasan_kmalloc+0xb7/0xc0
[   30.032852]  __kmalloc_noprof+0x1ca/0x510
[   30.033189]  kunit_kmalloc_array+0x25/0x60
[   30.033452]  copy_user_test_oob+0xab/0x10f0
[   30.033662]  kunit_try_run_case+0x1a5/0x480
[   30.033815]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   30.034078]  kthread+0x337/0x6f0
[   30.034246]  ret_from_fork+0x116/0x1d0
[   30.034431]  ret_from_fork_asm+0x1a/0x30
[   30.034822] 
[   30.034896] The buggy address belongs to the object at ffff888106253800
[   30.034896]  which belongs to the cache kmalloc-128 of size 128
[   30.035591] The buggy address is located 0 bytes inside of
[   30.035591]  allocated 120-byte region [ffff888106253800, ffff888106253878)
[   30.036119] 
[   30.036232] The buggy address belongs to the physical page:
[   30.036515] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106253
[   30.036891] flags: 0x200000000000000(node=0|zone=2)
[   30.037172] page_type: f5(slab)
[   30.037365] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000
[   30.037708] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000
[   30.038076] page dumped because: kasan: bad access detected
[   30.038334] 
[   30.038416] Memory state around the buggy address:
[   30.038640]  ffff888106253700: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   30.038975]  ffff888106253780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   30.039307] >ffff888106253800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc
[   30.039576]                                                                 ^
[   30.039925]  ffff888106253880: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   30.040244]  ffff888106253900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   30.040557] ==================================================================