[   11.571700] ==================================================================
[   11.572469] BUG: KASAN: out-of-bounds in kmalloc_memmove_negative_size+0x171/0x330
[   11.573067] Read of size 18446744073709551614 at addr ffff888102b3b104 by task kunit_try_catch/197
[   11.573758] 
[   11.574018] CPU: 0 UID: 0 PID: 197 Comm: kunit_try_catch Tainted: G    B            N  6.15.0-next-20250605 #1 PREEMPT(voluntary) 
[   11.574067] Tainted: [B]=BAD_PAGE, [N]=TEST
[   11.574078] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   11.574099] Call Trace:
[   11.574233]  <TASK>
[   11.574255]  dump_stack_lvl+0x73/0xb0
[   11.574284]  print_report+0xd1/0x650
[   11.574306]  ? __virt_addr_valid+0x1db/0x2d0
[   11.574328]  ? kmalloc_memmove_negative_size+0x171/0x330
[   11.574353]  ? kasan_complete_mode_report_info+0x2a/0x200
[   11.574375]  ? kmalloc_memmove_negative_size+0x171/0x330
[   11.574420]  kasan_report+0x141/0x180
[   11.574442]  ? kmalloc_memmove_negative_size+0x171/0x330
[   11.574471]  kasan_check_range+0x10c/0x1c0
[   11.574495]  __asan_memmove+0x27/0x70
[   11.574514]  kmalloc_memmove_negative_size+0x171/0x330
[   11.574538]  ? __pfx_kmalloc_memmove_negative_size+0x10/0x10
[   11.574562]  ? __schedule+0x10cc/0x2b60
[   11.574585]  ? __pfx_read_tsc+0x10/0x10
[   11.574605]  ? ktime_get_ts64+0x86/0x230
[   11.574653]  kunit_try_run_case+0x1a5/0x480
[   11.574674]  ? __pfx_kunit_try_run_case+0x10/0x10
[   11.574693]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   11.574717]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   11.574740]  ? __kthread_parkme+0x82/0x180
[   11.574759]  ? preempt_count_sub+0x50/0x80
[   11.574783]  ? __pfx_kunit_try_run_case+0x10/0x10
[   11.574803]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   11.574827]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   11.574851]  kthread+0x337/0x6f0
[   11.574870]  ? trace_preempt_on+0x20/0xc0
[   11.574903]  ? __pfx_kthread+0x10/0x10
[   11.574923]  ? _raw_spin_unlock_irq+0x47/0x80
[   11.574957]  ? calculate_sigpending+0x7b/0xa0
[   11.574979]  ? __pfx_kthread+0x10/0x10
[   11.575000]  ret_from_fork+0x116/0x1d0
[   11.575018]  ? __pfx_kthread+0x10/0x10
[   11.575037]  ret_from_fork_asm+0x1a/0x30
[   11.575066]  </TASK>
[   11.575077] 
[   11.587288] Allocated by task 197:
[   11.587606]  kasan_save_stack+0x45/0x70
[   11.588060]  kasan_save_track+0x18/0x40
[   11.588369]  kasan_save_alloc_info+0x3b/0x50
[   11.588714]  __kasan_kmalloc+0xb7/0xc0
[   11.589039]  __kmalloc_cache_noprof+0x189/0x420
[   11.589372]  kmalloc_memmove_negative_size+0xac/0x330
[   11.589790]  kunit_try_run_case+0x1a5/0x480
[   11.589960]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   11.590468]  kthread+0x337/0x6f0
[   11.590797]  ret_from_fork+0x116/0x1d0
[   11.591197]  ret_from_fork_asm+0x1a/0x30
[   11.591353] 
[   11.591450] The buggy address belongs to the object at ffff888102b3b100
[   11.591450]  which belongs to the cache kmalloc-64 of size 64
[   11.592323] The buggy address is located 4 bytes inside of
[   11.592323]  64-byte region [ffff888102b3b100, ffff888102b3b140)
[   11.593040] 
[   11.593155] The buggy address belongs to the physical page:
[   11.593508] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102b3b
[   11.594121] flags: 0x200000000000000(node=0|zone=2)
[   11.594431] page_type: f5(slab)
[   11.594604] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000
[   11.595138] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000
[   11.595541] page dumped because: kasan: bad access detected
[   11.595960] 
[   11.596071] Memory state around the buggy address:
[   11.596438]  ffff888102b3b000: 00 00 00 00 01 fc fc fc fc fc fc fc fc fc fc fc
[   11.596835]  ffff888102b3b080: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[   11.597264] >ffff888102b3b100: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc
[   11.597668]                    ^
[   11.597860]  ffff888102b3b180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   11.598361]  ffff888102b3b200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   11.598824] ==================================================================