------------[ cut here ]------------
[   60.903860] WARNING: CPU: 1 PID: 631 at mm/highmem.c:622 kunmap_local_indexed+0x178/0x17c
[   60.906935] Modules linked in: fuse
[   60.908380] CPU: 1 UID: 0 PID: 631 Comm: uffd-unit-tests Not tainted 6.15.2-rc1 #1 NONE 
[   60.908908] Hardware name: Generic DT based system
[   60.909404] Call trace: 
[   60.910056]  unwind_backtrace from show_stack+0x18/0x1c
[   60.910573]  show_stack from dump_stack_lvl+0x6c/0x8c
[   60.910928]  dump_stack_lvl from __warn+0x84/0x130
[   60.911245]  __warn from warn_slowpath_fmt+0x18c/0x194
[   60.911601]  warn_slowpath_fmt from kunmap_local_indexed+0x178/0x17c
[   60.911976]  kunmap_local_indexed from move_pages+0x924/0x197c
[   60.912197]  move_pages from userfaultfd_ioctl+0x129c/0x2144
[   60.912857]  userfaultfd_ioctl from sys_ioctl+0x16c/0xce0
[   60.913326]  sys_ioctl from ret_fast_syscall+0x0/0x1c
[   60.913775] Exception stack(0xfa1d5fa8 to 0xfa1d5ff0)
[   60.914123] 5fa0:                   00001000 00000000 00000005 c028aa05 b2daecd8 b2daecb0
[   60.914689] 5fc0: 00001000 00000000 00000005 00000036 8010aa01 004b0000 b2daed80 00000012
[   60.914990] 5fe0: 00000036 b2daec98 b6e61861 b6dcf736
[   60.916613] ---[ end trace 0000000000000000 ]---