------------[ cut here ]------------
WARNING: CPU: 0 PID: 5893 at mm/highmem.c:611 kunmap_local_indexed+0x210/0x228 mm/highmem.c:611
Modules linked in:
Kernel panic - not syncing: kernel: panic_on_warn set ...
CPU: 0 PID: 5893 Comm: syz.1.642 Not tainted 6.10.0-syzkaller #0
Hardware name: ARM-Versatile Express
Call trace: 
[<818e5500>] (dump_backtrace) from [<818e55fc>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257)
 r7:00000000 r6:82622804 r5:00000000 r4:81fe5f10
[<818e55e4>] (show_stack) from [<81902d34>] (__dump_stack lib/dump_stack.c:88 [inline])
[<818e55e4>] (show_stack) from [<81902d34>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:114)
[<81902ce0>] (dump_stack_lvl) from [<81902d74>] (dump_stack+0x18/0x1c lib/dump_stack.c:123)
 r5:00000000 r4:82861d0c
[<81902d5c>] (dump_stack) from [<818e60a4>] (panic+0x120/0x358 kernel/panic.c:347)
[<818e5f84>] (panic) from [<80241f54>] (check_panic_on_warn kernel/panic.c:240 [inline])
[<818e5f84>] (panic) from [<80241f54>] (print_tainted+0x0/0xa0 kernel/panic.c:235)
 r3:8260c5c4 r2:00000001 r1:81fcf038 r0:81fd66c0
 r7:80480d34
[<80241ee0>] (check_panic_on_warn) from [<80242148>] (__warn+0x7c/0x180 kernel/panic.c:693)
[<802420cc>] (__warn) from [<802423c4>] (warn_slowpath_fmt+0x178/0x1f4 kernel/panic.c:718)
 r8:00000009 r7:81ffd678 r6:dfc2dd14 r5:8415c800 r4:00000000
[<80242250>] (warn_slowpath_fmt) from [<80480d34>] (kunmap_local_indexed+0x210/0x228 mm/highmem.c:611)
 r10:ffefd0a8 r9:84138f00 r8:20508000 r7:fffffffe r6:00000003 r5:8415c800
 r4:ffefd000
[<80480b24>] (kunmap_local_indexed) from [<804f286c>] (__kunmap_local include/linux/highmem-internal.h:94 [inline])
[<80480b24>] (kunmap_local_indexed) from [<804f286c>] (move_pages_pte mm/userfaultfd.c:1332 [inline])
[<80480b24>] (kunmap_local_indexed) from [<804f286c>] (move_pages+0x7e8/0x149c mm/userfaultfd.c:1733)
 r7:fffffffe r6:00000000 r5:85456810 r4:ffefb840
[<804f2084>] (move_pages) from [<8056c62c>] (userfaultfd_move fs/userfaultfd.c:2016 [inline])
[<804f2084>] (move_pages) from [<8056c62c>] (userfaultfd_ioctl+0x125c/0x2310 fs/userfaultfd.c:2139)
 r10:20c16000 r9:dfc2de98 r8:20000080 r7:84138f00 r6:00000001 r5:00000000
 r4:85500000
[<8056b3d0>] (userfaultfd_ioctl) from [<8051a7f0>] (vfs_ioctl fs/ioctl.c:51 [inline])
[<8056b3d0>] (userfaultfd_ioctl) from [<8051a7f0>] (do_vfs_ioctl fs/ioctl.c:861 [inline])
[<8056b3d0>] (userfaultfd_ioctl) from [<8051a7f0>] (__do_sys_ioctl fs/ioctl.c:905 [inline])
[<8056b3d0>] (userfaultfd_ioctl) from [<8051a7f0>] (sys_ioctl+0x134/0xda4 fs/ioctl.c:893)
 r10:8415c800 r9:00000003 r8:84674480 r7:20000080 r6:84674481 r5:00000000
 r4:c028aa05
[<8051a6bc>] (sys_ioctl) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:67)
Exception stack(0xdfc2dfa8 to 0xdfc2dff0)
dfa0:                   00000000 00000000 00000003 c028aa05 20000080 00000000
dfc0: 00000000 00000000 002642e0 00000036 7ecc8766 7ecc8767 003d0f00 76bbe0bc
dfe0: 76bbdec8 76bbdeb8 000183ec 001305d0
 r10:00000036 r9:8415c800 r8:8020029c r7:00000036 r6:002642e0 r5:00000000
 r4:00000000
Rebooting in 86400 seconds..