[   21.854485] ==================================================================
[   21.868842] BUG: KASAN: use-after-free in page_alloc_uaf+0x328/0x350
[   21.875177] Read of size 1 at addr ffff0008067a0000 by task kunit_try_catch/199
[   21.882469] 
[   21.883952] CPU: 6 UID: 0 PID: 199 Comm: kunit_try_catch Tainted: G    B            N  6.15.0-rc6-next-20250515 #1 PREEMPT 
[   21.884014] Tainted: [B]=BAD_PAGE, [N]=TEST
[   21.884030] Hardware name: WinLink E850-96 board (DT)
[   21.884048] Call trace:
[   21.884061]  show_stack+0x20/0x38 (C)
[   21.884098]  dump_stack_lvl+0x8c/0xd0
[   21.884129]  print_report+0x118/0x608
[   21.884165]  kasan_report+0xdc/0x128
[   21.884196]  __asan_report_load1_noabort+0x20/0x30
[   21.884234]  page_alloc_uaf+0x328/0x350
[   21.884263]  kunit_try_run_case+0x170/0x3f0
[   21.884296]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   21.884329]  kthread+0x328/0x630
[   21.884364]  ret_from_fork+0x10/0x20
[   21.884396] 
[   21.947660] The buggy address belongs to the physical page:
[   21.953216] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x8867a0
[   21.961201] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff)
[   21.967711] page_type: f0(buddy)
[   21.970935] raw: 0bfffe0000000000 ffff00087f61bcc8 ffff00087f61bcc8 0000000000000000
[   21.978652] raw: 0000000000000000 0000000000000005 00000000f0000000 0000000000000000
[   21.986372] page dumped because: kasan: bad access detected
[   21.991927] 
[   21.993403] Memory state around the buggy address:
[   21.998186]  ffff00080679ff00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   22.005386]  ffff00080679ff80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   22.012590] >ffff0008067a0000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   22.019791]                    ^
[   22.023007]  ffff0008067a0080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   22.030211]  ffff0008067a0100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   22.037414] ==================================================================