[   29.265986] ==================================================================
[   29.267303] BUG: KASAN: slab-out-of-bounds in _copy_from_user+0x32/0x90
[   29.268254] Write of size 121 at addr ffff888104975500 by task kunit_try_catch/333
[   29.269083] 
[   29.269381] CPU: 0 UID: 0 PID: 333 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc7-next-20250722 #1 PREEMPT(voluntary) 
[   29.269444] Tainted: [B]=BAD_PAGE, [N]=TEST
[   29.269460] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   29.269493] Call Trace:
[   29.269512]  <TASK>
[   29.269534]  dump_stack_lvl+0x73/0xb0
[   29.269570]  print_report+0xd1/0x640
[   29.269597]  ? __virt_addr_valid+0x1db/0x2d0
[   29.269625]  ? _copy_from_user+0x32/0x90
[   29.269647]  ? kasan_complete_mode_report_info+0x2a/0x200
[   29.269677]  ? _copy_from_user+0x32/0x90
[   29.269700]  kasan_report+0x141/0x180
[   29.269725]  ? _copy_from_user+0x32/0x90
[   29.269751]  kasan_check_range+0x10c/0x1c0
[   29.269776]  __kasan_check_write+0x18/0x20
[   29.269803]  _copy_from_user+0x32/0x90
[   29.269826]  copy_user_test_oob+0x2be/0x10f0
[   29.269863]  ? __pfx_copy_user_test_oob+0x10/0x10
[   29.269889]  ? sysvec_apic_timer_interrupt+0x50/0x90
[   29.269924]  ? __pfx_copy_user_test_oob+0x10/0x10
[   29.269954]  kunit_try_run_case+0x1a5/0x480
[   29.269979]  ? __pfx_kunit_try_run_case+0x10/0x10
[   29.270004]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   29.270030]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   29.270056]  ? __kthread_parkme+0x82/0x180
[   29.270079]  ? preempt_count_sub+0x50/0x80
[   29.270104]  ? __pfx_kunit_try_run_case+0x10/0x10
[   29.270129]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   29.270155]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   29.270196]  kthread+0x337/0x6f0
[   29.270217]  ? trace_preempt_on+0x20/0xc0
[   29.270245]  ? __pfx_kthread+0x10/0x10
[   29.270269]  ? _raw_spin_unlock_irq+0x47/0x80
[   29.270296]  ? calculate_sigpending+0x7b/0xa0
[   29.270323]  ? __pfx_kthread+0x10/0x10
[   29.270347]  ret_from_fork+0x116/0x1d0
[   29.270370]  ? __pfx_kthread+0x10/0x10
[   29.270393]  ret_from_fork_asm+0x1a/0x30
[   29.270427]  </TASK>
[   29.270442] 
[   29.283411] Allocated by task 333:
[   29.283750]  kasan_save_stack+0x45/0x70
[   29.284117]  kasan_save_track+0x18/0x40
[   29.284557]  kasan_save_alloc_info+0x3b/0x50
[   29.284967]  __kasan_kmalloc+0xb7/0xc0
[   29.285155]  __kmalloc_noprof+0x1ca/0x510
[   29.285530]  kunit_kmalloc_array+0x25/0x60
[   29.285999]  copy_user_test_oob+0xab/0x10f0
[   29.286153]  kunit_try_run_case+0x1a5/0x480
[   29.286300]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   29.286566]  kthread+0x337/0x6f0
[   29.286875]  ret_from_fork+0x116/0x1d0
[   29.287226]  ret_from_fork_asm+0x1a/0x30
[   29.287671] 
[   29.287847] The buggy address belongs to the object at ffff888104975500
[   29.287847]  which belongs to the cache kmalloc-128 of size 128
[   29.288989] The buggy address is located 0 bytes inside of
[   29.288989]  allocated 120-byte region [ffff888104975500, ffff888104975578)
[   29.290075] 
[   29.290191] The buggy address belongs to the physical page:
[   29.290382] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x104975
[   29.291133] flags: 0x200000000000000(node=0|zone=2)
[   29.291627] page_type: f5(slab)
[   29.291900] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000
[   29.292138] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000
[   29.292908] page dumped because: kasan: bad access detected
[   29.293652] 
[   29.293823] Memory state around the buggy address:
[   29.294148]  ffff888104975400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   29.294372]  ffff888104975480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   29.294939] >ffff888104975500: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc
[   29.295631]                                                                 ^
[   29.296260]  ffff888104975580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   29.296710]  ffff888104975600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   29.296954] ==================================================================