[   21.937291] ==================================================================
[   21.938167] BUG: KASAN: slab-out-of-bounds in _copy_from_user+0x32/0x90
[   21.938610] Write of size 121 at addr ffff88810232e100 by task kunit_try_catch/302
[   21.938951] 
[   21.939142] CPU: 0 UID: 0 PID: 302 Comm: kunit_try_catch Tainted: G    B            N  6.15.0-rc6-next-20250512 #1 PREEMPT(voluntary) 
[   21.939250] Tainted: [B]=BAD_PAGE, [N]=TEST
[   21.939297] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   21.939347] Call Trace:
[   21.939376]  <TASK>
[   21.939420]  dump_stack_lvl+0x73/0xb0
[   21.939491]  print_report+0xd1/0x650
[   21.939544]  ? __virt_addr_valid+0x1db/0x2d0
[   21.939596]  ? _copy_from_user+0x32/0x90
[   21.939641]  ? kasan_complete_mode_report_info+0x2a/0x200
[   21.939683]  ? _copy_from_user+0x32/0x90
[   21.939773]  kasan_report+0x141/0x180
[   21.939822]  ? _copy_from_user+0x32/0x90
[   21.939869]  kasan_check_range+0x10c/0x1c0
[   21.939922]  __kasan_check_write+0x18/0x20
[   21.939969]  _copy_from_user+0x32/0x90
[   21.940016]  copy_user_test_oob+0x2be/0x10f0
[   21.940075]  ? __pfx_copy_user_test_oob+0x10/0x10
[   21.940128]  ? finish_task_switch.isra.0+0x153/0x700
[   21.940181]  ? __switch_to+0x47/0xf50
[   21.940235]  ? __schedule+0x10cc/0x2b60
[   21.940284]  ? __pfx_read_tsc+0x10/0x10
[   21.940313]  ? ktime_get_ts64+0x86/0x230
[   21.940342]  kunit_try_run_case+0x1a5/0x480
[   21.940369]  ? __pfx_kunit_try_run_case+0x10/0x10
[   21.940394]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   21.940421]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   21.940445]  ? __kthread_parkme+0x82/0x180
[   21.940469]  ? preempt_count_sub+0x50/0x80
[   21.940494]  ? __pfx_kunit_try_run_case+0x10/0x10
[   21.940519]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   21.940545]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   21.940570]  kthread+0x337/0x6f0
[   21.940592]  ? trace_preempt_on+0x20/0xc0
[   21.940620]  ? __pfx_kthread+0x10/0x10
[   21.940642]  ? _raw_spin_unlock_irq+0x47/0x80
[   21.940672]  ? calculate_sigpending+0x7b/0xa0
[   21.940731]  ? __pfx_kthread+0x10/0x10
[   21.940755]  ret_from_fork+0x116/0x1d0
[   21.940776]  ? __pfx_kthread+0x10/0x10
[   21.940799]  ret_from_fork_asm+0x1a/0x30
[   21.940832]  </TASK>
[   21.940848] 
[   21.952300] Allocated by task 302:
[   21.952693]  kasan_save_stack+0x45/0x70
[   21.953061]  kasan_save_track+0x18/0x40
[   21.953449]  kasan_save_alloc_info+0x3b/0x50
[   21.953899]  __kasan_kmalloc+0xb7/0xc0
[   21.954179]  __kmalloc_noprof+0x1c9/0x500
[   21.954644]  kunit_kmalloc_array+0x25/0x60
[   21.955132]  copy_user_test_oob+0xab/0x10f0
[   21.955534]  kunit_try_run_case+0x1a5/0x480
[   21.955811]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   21.956364]  kthread+0x337/0x6f0
[   21.956806]  ret_from_fork+0x116/0x1d0
[   21.957188]  ret_from_fork_asm+0x1a/0x30
[   21.957417] 
[   21.957551] The buggy address belongs to the object at ffff88810232e100
[   21.957551]  which belongs to the cache kmalloc-128 of size 128
[   21.957984] The buggy address is located 0 bytes inside of
[   21.957984]  allocated 120-byte region [ffff88810232e100, ffff88810232e178)
[   21.958632] 
[   21.958836] The buggy address belongs to the physical page:
[   21.959247] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10232e
[   21.959602] flags: 0x200000000000000(node=0|zone=2)
[   21.959838] page_type: f5(slab)
[   21.960239] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000
[   21.960921] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000
[   21.961528] page dumped because: kasan: bad access detected
[   21.962102] 
[   21.962292] Memory state around the buggy address:
[   21.962688]  ffff88810232e000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   21.963033]  ffff88810232e080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   21.963486] >ffff88810232e100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc
[   21.964190]                                                                 ^
[   21.964629]  ffff88810232e180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   21.965069]  ffff88810232e200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   21.965352] ==================================================================