[   15.148289] ==================================================================
[   15.148975] BUG: KASAN: slab-out-of-bounds in _copy_to_user+0x3c/0x70
[   15.149558] Read of size 121 at addr ffff8881029cec00 by task kunit_try_catch/302
[   15.150315] 
[   15.150503] CPU: 0 UID: 0 PID: 302 Comm: kunit_try_catch Tainted: G    B            N  6.15.0-rc6-next-20250513 #1 PREEMPT(voluntary) 
[   15.150568] Tainted: [B]=BAD_PAGE, [N]=TEST
[   15.150584] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   15.150626] Call Trace:
[   15.150643]  <TASK>
[   15.150659]  dump_stack_lvl+0x73/0xb0
[   15.150689]  print_report+0xd1/0x650
[   15.150715]  ? __virt_addr_valid+0x1db/0x2d0
[   15.150742]  ? _copy_to_user+0x3c/0x70
[   15.150763]  ? kasan_complete_mode_report_info+0x2a/0x200
[   15.150791]  ? _copy_to_user+0x3c/0x70
[   15.150814]  kasan_report+0x141/0x180
[   15.150839]  ? _copy_to_user+0x3c/0x70
[   15.150866]  kasan_check_range+0x10c/0x1c0
[   15.150893]  __kasan_check_read+0x15/0x20
[   15.150916]  _copy_to_user+0x3c/0x70
[   15.150938]  copy_user_test_oob+0x364/0x10f0
[   15.150964]  ? __pfx_copy_user_test_oob+0x10/0x10
[   15.150987]  ? finish_task_switch.isra.0+0x153/0x700
[   15.151014]  ? __switch_to+0x47/0xf50
[   15.151043]  ? __schedule+0x10cc/0x2b60
[   15.151068]  ? __pfx_read_tsc+0x10/0x10
[   15.151091]  ? ktime_get_ts64+0x86/0x230
[   15.151118]  kunit_try_run_case+0x1a5/0x480
[   15.151144]  ? __pfx_kunit_try_run_case+0x10/0x10
[   15.151192]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   15.151218]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   15.151244]  ? __kthread_parkme+0x82/0x180
[   15.151269]  ? preempt_count_sub+0x50/0x80
[   15.151295]  ? __pfx_kunit_try_run_case+0x10/0x10
[   15.151323]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   15.151352]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   15.151382]  kthread+0x337/0x6f0
[   15.151403]  ? trace_preempt_on+0x20/0xc0
[   15.151430]  ? __pfx_kthread+0x10/0x10
[   15.151453]  ? _raw_spin_unlock_irq+0x47/0x80
[   15.151477]  ? calculate_sigpending+0x7b/0xa0
[   15.151505]  ? __pfx_kthread+0x10/0x10
[   15.151530]  ret_from_fork+0x116/0x1d0
[   15.151550]  ? __pfx_kthread+0x10/0x10
[   15.151573]  ret_from_fork_asm+0x1a/0x30
[   15.151607]  </TASK>
[   15.151627] 
[   15.163513] Allocated by task 302:
[   15.163694]  kasan_save_stack+0x45/0x70
[   15.164048]  kasan_save_track+0x18/0x40
[   15.164436]  kasan_save_alloc_info+0x3b/0x50
[   15.164805]  __kasan_kmalloc+0xb7/0xc0
[   15.164944]  __kmalloc_noprof+0x1c9/0x500
[   15.165087]  kunit_kmalloc_array+0x25/0x60
[   15.165391]  copy_user_test_oob+0xab/0x10f0
[   15.165786]  kunit_try_run_case+0x1a5/0x480
[   15.166191]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   15.166676]  kthread+0x337/0x6f0
[   15.166983]  ret_from_fork+0x116/0x1d0
[   15.167297]  ret_from_fork_asm+0x1a/0x30
[   15.167442] 
[   15.167518] The buggy address belongs to the object at ffff8881029cec00
[   15.167518]  which belongs to the cache kmalloc-128 of size 128
[   15.167889] The buggy address is located 0 bytes inside of
[   15.167889]  allocated 120-byte region [ffff8881029cec00, ffff8881029cec78)
[   15.168414] 
[   15.168578] The buggy address belongs to the physical page:
[   15.169061] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1029ce
[   15.169750] flags: 0x200000000000000(node=0|zone=2)
[   15.170200] page_type: f5(slab)
[   15.170502] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000
[   15.171180] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000
[   15.171816] page dumped because: kasan: bad access detected
[   15.172320] 
[   15.172482] Memory state around the buggy address:
[   15.172901]  ffff8881029ceb00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   15.173328]  ffff8881029ceb80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   15.173548] >ffff8881029cec00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc
[   15.173775]                                                                 ^
[   15.173990]  ffff8881029cec80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   15.174297]  ffff8881029ced00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   15.174915] ==================================================================