[   30.044267] ==================================================================
[   30.044646] BUG: KASAN: slab-out-of-bounds in _copy_to_user+0x3c/0x70
[   30.045034] Read of size 121 at addr ffff888106253800 by task kunit_try_catch/334
[   30.045422] 
[   30.045541] CPU: 1 UID: 0 PID: 334 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc7-next-20250725 #1 PREEMPT(voluntary) 
[   30.045590] Tainted: [B]=BAD_PAGE, [N]=TEST
[   30.045604] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   30.045626] Call Trace:
[   30.045639]  <TASK>
[   30.045655]  dump_stack_lvl+0x73/0xb0
[   30.045684]  print_report+0xd1/0x640
[   30.045710]  ? __virt_addr_valid+0x1db/0x2d0
[   30.045756]  ? _copy_to_user+0x3c/0x70
[   30.045778]  ? kasan_complete_mode_report_info+0x2a/0x200
[   30.045807]  ? _copy_to_user+0x3c/0x70
[   30.045829]  kasan_report+0x141/0x180
[   30.045855]  ? _copy_to_user+0x3c/0x70
[   30.045882]  kasan_check_range+0x10c/0x1c0
[   30.045927]  __kasan_check_read+0x15/0x20
[   30.045962]  _copy_to_user+0x3c/0x70
[   30.046007]  copy_user_test_oob+0x364/0x10f0
[   30.046082]  ? __pfx_copy_user_test_oob+0x10/0x10
[   30.046121]  ? finish_task_switch.isra.0+0x153/0x700
[   30.046148]  ? __switch_to+0x47/0xf80
[   30.046195]  ? __schedule+0x10da/0x2b60
[   30.046218]  ? __pfx_read_tsc+0x10/0x10
[   30.046241]  ? ktime_get_ts64+0x86/0x230
[   30.046268]  kunit_try_run_case+0x1a5/0x480
[   30.046294]  ? __pfx_kunit_try_run_case+0x10/0x10
[   30.046318]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   30.046342]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   30.046370]  ? __kthread_parkme+0x82/0x180
[   30.046391]  ? preempt_count_sub+0x50/0x80
[   30.046417]  ? __pfx_kunit_try_run_case+0x10/0x10
[   30.046443]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   30.046469]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   30.046495]  kthread+0x337/0x6f0
[   30.046516]  ? trace_preempt_on+0x20/0xc0
[   30.046541]  ? __pfx_kthread+0x10/0x10
[   30.046564]  ? _raw_spin_unlock_irq+0x47/0x80
[   30.046590]  ? calculate_sigpending+0x7b/0xa0
[   30.046615]  ? __pfx_kthread+0x10/0x10
[   30.046638]  ret_from_fork+0x116/0x1d0
[   30.046660]  ? __pfx_kthread+0x10/0x10
[   30.046682]  ret_from_fork_asm+0x1a/0x30
[   30.046733]  </TASK>
[   30.046744] 
[   30.054907] Allocated by task 334:
[   30.055293]  kasan_save_stack+0x45/0x70
[   30.055519]  kasan_save_track+0x18/0x40
[   30.055714]  kasan_save_alloc_info+0x3b/0x50
[   30.056035]  __kasan_kmalloc+0xb7/0xc0
[   30.056207]  __kmalloc_noprof+0x1ca/0x510
[   30.056347]  kunit_kmalloc_array+0x25/0x60
[   30.056569]  copy_user_test_oob+0xab/0x10f0
[   30.056800]  kunit_try_run_case+0x1a5/0x480
[   30.057078]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   30.057352]  kthread+0x337/0x6f0
[   30.057509]  ret_from_fork+0x116/0x1d0
[   30.057703]  ret_from_fork_asm+0x1a/0x30
[   30.057887] 
[   30.058013] The buggy address belongs to the object at ffff888106253800
[   30.058013]  which belongs to the cache kmalloc-128 of size 128
[   30.058491] The buggy address is located 0 bytes inside of
[   30.058491]  allocated 120-byte region [ffff888106253800, ffff888106253878)
[   30.059038] 
[   30.059153] The buggy address belongs to the physical page:
[   30.059397] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106253
[   30.059969] flags: 0x200000000000000(node=0|zone=2)
[   30.060208] page_type: f5(slab)
[   30.060395] raw: 0200000000000000 ffff888100041a00 dead000000000122 0000000000000000
[   30.060720] raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000
[   30.061117] page dumped because: kasan: bad access detected
[   30.061388] 
[   30.061482] Memory state around the buggy address:
[   30.061731]  ffff888106253700: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   30.062102]  ffff888106253780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   30.062418] >ffff888106253800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc
[   30.062746]                                                                 ^
[   30.063226]  ffff888106253880: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   30.063545]  ffff888106253900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   30.063852] ==================================================================