[   15.017354] ==================================================================
[   15.017852] BUG: KASAN: slab-out-of-bounds in _copy_from_user+0x32/0x90
[   15.018096] Write of size 121 at addr ffff8881039b7800 by task kunit_try_catch/303
[   15.018331] 
[   15.018472] CPU: 1 UID: 0 PID: 303 Comm: kunit_try_catch Tainted: G    B            N  6.15.0-rc7-next-20250526 #1 PREEMPT(voluntary) 
[   15.018523] Tainted: [B]=BAD_PAGE, [N]=TEST
[   15.018538] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   15.018563] Call Trace:
[   15.018579]  <TASK>
[   15.018598]  dump_stack_lvl+0x73/0xb0
[   15.018629]  print_report+0xd1/0x650
[   15.018654]  ? __virt_addr_valid+0x1db/0x2d0
[   15.018680]  ? _copy_from_user+0x32/0x90
[   15.018732]  ? kasan_complete_mode_report_info+0x2a/0x200
[   15.018758]  ? _copy_from_user+0x32/0x90
[   15.018780]  kasan_report+0x141/0x180
[   15.018817]  ? _copy_from_user+0x32/0x90
[   15.018844]  kasan_check_range+0x10c/0x1c0
[   15.018869]  __kasan_check_write+0x18/0x20
[   15.018899]  _copy_from_user+0x32/0x90
[   15.018921]  copy_user_test_oob+0x2be/0x10f0
[   15.018950]  ? __pfx_copy_user_test_oob+0x10/0x10
[   15.018984]  ? finish_task_switch.isra.0+0x153/0x700
[   15.019008]  ? __switch_to+0x47/0xf50
[   15.019037]  ? __schedule+0x10cc/0x2b60
[   15.019072]  ? __pfx_read_tsc+0x10/0x10
[   15.019094]  ? ktime_get_ts64+0x86/0x230
[   15.019130]  kunit_try_run_case+0x1a5/0x480
[   15.019153]  ? __pfx_kunit_try_run_case+0x10/0x10
[   15.019174]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   15.019200]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   15.019235]  ? __kthread_parkme+0x82/0x180
[   15.019257]  ? preempt_count_sub+0x50/0x80
[   15.019283]  ? __pfx_kunit_try_run_case+0x10/0x10
[   15.019316]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   15.019342]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   15.019367]  kthread+0x337/0x6f0
[   15.019399]  ? trace_preempt_on+0x20/0xc0
[   15.019424]  ? __pfx_kthread+0x10/0x10
[   15.019445]  ? _raw_spin_unlock_irq+0x47/0x80
[   15.019469]  ? calculate_sigpending+0x7b/0xa0
[   15.019494]  ? __pfx_kthread+0x10/0x10
[   15.019517]  ret_from_fork+0x116/0x1d0
[   15.019537]  ? __pfx_kthread+0x10/0x10
[   15.019559]  ret_from_fork_asm+0x1a/0x30
[   15.019591]  </TASK>
[   15.019604] 
[   15.032415] Allocated by task 303:
[   15.032792]  kasan_save_stack+0x45/0x70
[   15.033179]  kasan_save_track+0x18/0x40
[   15.033553]  kasan_save_alloc_info+0x3b/0x50
[   15.033975]  __kasan_kmalloc+0xb7/0xc0
[   15.034342]  __kmalloc_noprof+0x1c9/0x500
[   15.034761]  kunit_kmalloc_array+0x25/0x60
[   15.035147]  copy_user_test_oob+0xab/0x10f0
[   15.035553]  kunit_try_run_case+0x1a5/0x480
[   15.035969]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   15.036472]  kthread+0x337/0x6f0
[   15.036616]  ret_from_fork+0x116/0x1d0
[   15.036895]  ret_from_fork_asm+0x1a/0x30
[   15.037300] 
[   15.037475] The buggy address belongs to the object at ffff8881039b7800
[   15.037475]  which belongs to the cache kmalloc-128 of size 128
[   15.038229] The buggy address is located 0 bytes inside of
[   15.038229]  allocated 120-byte region [ffff8881039b7800, ffff8881039b7878)
[   15.038608] 
[   15.038685] The buggy address belongs to the physical page:
[   15.039207] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1039b7
[   15.039924] flags: 0x200000000000000(node=0|zone=2)
[   15.040383] page_type: f5(slab)
[   15.040721] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000
[   15.041393] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000
[   15.042083] page dumped because: kasan: bad access detected
[   15.042584] 
[   15.042773] Memory state around the buggy address:
[   15.043160]  ffff8881039b7700: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   15.043483]  ffff8881039b7780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   15.043724] >ffff8881039b7800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc
[   15.044334]                                                                 ^
[   15.044981]  ffff8881039b7880: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   15.045614]  ffff8881039b7900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   15.046146] ==================================================================