[   21.707568] ==================================================================
[   21.708516] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x172/0x330
[   21.709188] Read of size 18446744073709551614 at addr ffff888102a18c84 by task kunit_try_catch/188
[   21.709891] 
[   21.710199] CPU: 0 UID: 0 PID: 188 Comm: kunit_try_catch Tainted: G    B            N 6.12.0-next-20241128 #1
[   21.711113] Tainted: [B]=BAD_PAGE, [N]=TEST
[   21.711856] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   21.713050] Call Trace:
[   21.713305]  <TASK>
[   21.714011]  dump_stack_lvl+0x73/0xb0
[   21.714689]  print_report+0xd1/0x640
[   21.715090]  ? __virt_addr_valid+0x1db/0x2d0
[   21.715541]  ? kasan_complete_mode_report_info+0x2a/0x200
[   21.716076]  kasan_report+0x102/0x140
[   21.716518]  ? kmalloc_memmove_negative_size+0x172/0x330
[   21.717003]  ? kmalloc_memmove_negative_size+0x172/0x330
[   21.717646]  kasan_check_range+0x10c/0x1c0
[   21.718292]  __asan_memmove+0x27/0x70
[   21.718947]  kmalloc_memmove_negative_size+0x172/0x330
[   21.719819]  ? __pfx_kmalloc_memmove_negative_size+0x10/0x10
[   21.720512]  ? __schedule+0xc3e/0x2790
[   21.721051]  ? __pfx_read_tsc+0x10/0x10
[   21.721657]  ? ktime_get_ts64+0x84/0x230
[   21.722209]  kunit_try_run_case+0x1b3/0x490
[   21.723072]  ? __pfx_kunit_try_run_case+0x10/0x10
[   21.723900]  ? _raw_spin_lock_irqsave+0xa2/0x110
[   21.724510]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   21.724990]  ? __kthread_parkme+0x82/0x160
[   21.725619]  ? preempt_count_sub+0x50/0x80
[   21.726103]  ? __pfx_kunit_try_run_case+0x10/0x10
[   21.726817]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   21.727849]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   21.728966]  kthread+0x257/0x310
[   21.729419]  ? __pfx_kthread+0x10/0x10
[   21.729785]  ret_from_fork+0x41/0x80
[   21.729983]  ? __pfx_kthread+0x10/0x10
[   21.730432]  ret_from_fork_asm+0x1a/0x30
[   21.731146]  </TASK>
[   21.731599] 
[   21.731873] Allocated by task 188:
[   21.732306]  kasan_save_stack+0x3d/0x60
[   21.733241]  kasan_save_track+0x18/0x40
[   21.733549]  kasan_save_alloc_info+0x3b/0x50
[   21.734520]  __kasan_kmalloc+0xb7/0xc0
[   21.734884]  __kmalloc_cache_noprof+0x184/0x410
[   21.735639]  kmalloc_memmove_negative_size+0xad/0x330
[   21.736139]  kunit_try_run_case+0x1b3/0x490
[   21.736925]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   21.737454]  kthread+0x257/0x310
[   21.738121]  ret_from_fork+0x41/0x80
[   21.738773]  ret_from_fork_asm+0x1a/0x30
[   21.739045] 
[   21.739437] The buggy address belongs to the object at ffff888102a18c80
[   21.739437]  which belongs to the cache kmalloc-64 of size 64
[   21.740861] The buggy address is located 4 bytes inside of
[   21.740861]  64-byte region [ffff888102a18c80, ffff888102a18cc0)
[   21.741938] 
[   21.742293] The buggy address belongs to the physical page:
[   21.742815] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102a18
[   21.743622] flags: 0x200000000000000(node=0|zone=2)
[   21.744011] page_type: f5(slab)
[   21.744680] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000
[   21.745463] raw: 0000000000000000 0000000080200020 00000001f5000000 0000000000000000
[   21.746372] page dumped because: kasan: bad access detected
[   21.746843] 
[   21.747112] Memory state around the buggy address:
[   21.747665]  ffff888102a18b80: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[   21.748479]  ffff888102a18c00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[   21.749066] >ffff888102a18c80: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc
[   21.749702]                    ^
[   21.750144]  ffff888102a18d00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   21.750939]  ffff888102a18d80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   21.751615] ==================================================================