[   15.481944] ==================================================================
[   15.483279] BUG: KASAN: slab-out-of-bounds in _copy_from_user+0x32/0x90
[   15.483803] Write of size 121 at addr ffff888102b2dc00 by task kunit_try_catch/302
[   15.484538] 
[   15.484758] CPU: 0 UID: 0 PID: 302 Comm: kunit_try_catch Tainted: G    B            N  6.15.0-next-20250605 #1 PREEMPT(voluntary) 
[   15.484810] Tainted: [B]=BAD_PAGE, [N]=TEST
[   15.484823] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   15.484847] Call Trace:
[   15.484860]  <TASK>
[   15.484880]  dump_stack_lvl+0x73/0xb0
[   15.484922]  print_report+0xd1/0x650
[   15.485097]  ? __virt_addr_valid+0x1db/0x2d0
[   15.485134]  ? _copy_from_user+0x32/0x90
[   15.485158]  ? kasan_complete_mode_report_info+0x2a/0x200
[   15.485184]  ? _copy_from_user+0x32/0x90
[   15.485245]  kasan_report+0x141/0x180
[   15.485269]  ? _copy_from_user+0x32/0x90
[   15.485296]  kasan_check_range+0x10c/0x1c0
[   15.485322]  __kasan_check_write+0x18/0x20
[   15.485343]  _copy_from_user+0x32/0x90
[   15.485366]  copy_user_test_oob+0x2be/0x10f0
[   15.485395]  ? __pfx_copy_user_test_oob+0x10/0x10
[   15.485420]  ? finish_task_switch.isra.0+0x153/0x700
[   15.485446]  ? __switch_to+0x47/0xf50
[   15.485474]  ? __schedule+0x10cc/0x2b60
[   15.485500]  ? __pfx_read_tsc+0x10/0x10
[   15.485524]  ? ktime_get_ts64+0x86/0x230
[   15.485550]  kunit_try_run_case+0x1a5/0x480
[   15.485574]  ? __pfx_kunit_try_run_case+0x10/0x10
[   15.485596]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   15.485624]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   15.485651]  ? __kthread_parkme+0x82/0x180
[   15.485673]  ? preempt_count_sub+0x50/0x80
[   15.485698]  ? __pfx_kunit_try_run_case+0x10/0x10
[   15.485721]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   15.485749]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   15.485778]  kthread+0x337/0x6f0
[   15.485798]  ? trace_preempt_on+0x20/0xc0
[   15.485824]  ? __pfx_kthread+0x10/0x10
[   15.485846]  ? _raw_spin_unlock_irq+0x47/0x80
[   15.485871]  ? calculate_sigpending+0x7b/0xa0
[   15.485909]  ? __pfx_kthread+0x10/0x10
[   15.485932]  ret_from_fork+0x116/0x1d0
[   15.485963]  ? __pfx_kthread+0x10/0x10
[   15.485985]  ret_from_fork_asm+0x1a/0x30
[   15.486019]  </TASK>
[   15.486032] 
[   15.501995] Allocated by task 302:
[   15.502165]  kasan_save_stack+0x45/0x70
[   15.502468]  kasan_save_track+0x18/0x40
[   15.503265]  kasan_save_alloc_info+0x3b/0x50
[   15.503427]  __kasan_kmalloc+0xb7/0xc0
[   15.503563]  __kmalloc_noprof+0x1c9/0x500
[   15.503718]  kunit_kmalloc_array+0x25/0x60
[   15.503864]  copy_user_test_oob+0xab/0x10f0
[   15.504086]  kunit_try_run_case+0x1a5/0x480
[   15.504296]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   15.504799]  kthread+0x337/0x6f0
[   15.505037]  ret_from_fork+0x116/0x1d0
[   15.505388]  ret_from_fork_asm+0x1a/0x30
[   15.505766] 
[   15.505900] The buggy address belongs to the object at ffff888102b2dc00
[   15.505900]  which belongs to the cache kmalloc-128 of size 128
[   15.506532] The buggy address is located 0 bytes inside of
[   15.506532]  allocated 120-byte region [ffff888102b2dc00, ffff888102b2dc78)
[   15.507596] 
[   15.507786] The buggy address belongs to the physical page:
[   15.508342] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102b2d
[   15.508596] flags: 0x200000000000000(node=0|zone=2)
[   15.508809] page_type: f5(slab)
[   15.509208] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000
[   15.509871] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000
[   15.510585] page dumped because: kasan: bad access detected
[   15.511160] 
[   15.511321] Memory state around the buggy address:
[   15.511508]  ffff888102b2db00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   15.511917]  ffff888102b2db80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   15.512702] >ffff888102b2dc00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc
[   15.513284]                                                                 ^
[   15.513506]  ffff888102b2dc80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   15.514049]  ffff888102b2dd00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   15.514691] ==================================================================