------------[ cut here ]------------
WARNING: CPU: 1 PID: 6835 at mm/highmem.c:622 kunmap_local_indexed+0x20c/0x224 mm/highmem.c:622
Modules linked in:
Kernel panic - not syncing: kernel: panic_on_warn set ...
CPU: 1 UID: 0 PID: 6835 Comm: syz.1.661 Not tainted 6.16.0-rc7-syzkaller #0 PREEMPT 
Hardware name: ARM-Versatile Express
Call trace: 
[<80201a00>] (dump_backtrace) from [<80201afc>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257)
 r7:00000000 r6:8282083c r5:00000000 r4:8225b4f4
[<80201ae4>] (show_stack) from [<8021fdf4>] (__dump_stack lib/dump_stack.c:94 [inline])
[<80201ae4>] (show_stack) from [<8021fdf4>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:120)
[<8021fda0>] (dump_stack_lvl) from [<8021fe34>] (dump_stack+0x18/0x1c lib/dump_stack.c:129)
 r5:00000000 r4:82a6dd18
[<8021fe1c>] (dump_stack) from [<80202614>] (panic+0x120/0x374 kernel/panic.c:382)
[<802024f4>] (panic) from [<80258578>] (check_panic_on_warn kernel/panic.c:273 [inline])
[<802024f4>] (panic) from [<80258578>] (get_taint+0x0/0x1c kernel/panic.c:268)
 r3:8280c684 r2:00000001 r1:8224203c r0:822499d4
 r7:804bc144
[<80258504>] (check_panic_on_warn) from [<802586dc>] (__warn+0x80/0x188 kernel/panic.c:777)
[<8025865c>] (__warn) from [<8025895c>] (warn_slowpath_fmt+0x178/0x1f4 kernel/panic.c:804)
 r8:00000009 r7:822752cc r6:dfa75d1c r5:842e3c00 r4:00000000
[<802587e8>] (warn_slowpath_fmt) from [<804bc144>] (kunmap_local_indexed+0x20c/0x224 mm/highmem.c:622)
 r10:00000000 r9:decf0164 r8:ded0e414 r7:00a00000 r6:00000003 r5:842e3c00
 r4:ffedc000
[<804bbf38>] (kunmap_local_indexed) from [<805373a8>] (__kunmap_local include/linux/highmem-internal.h:102 [inline])
[<804bbf38>] (kunmap_local_indexed) from [<805373a8>] (move_pages_pte mm/userfaultfd.c:1457 [inline])
[<804bbf38>] (kunmap_local_indexed) from [<805373a8>] (move_pages+0xb24/0x19c8 mm/userfaultfd.c:1868)
 r7:00a00000 r6:fffffff0 r5:85957f34 r4:83839e00
[<80536884>] (move_pages) from [<805be4dc>] (userfaultfd_move fs/userfaultfd.c:1914 [inline])
[<80536884>] (move_pages) from [<805be4dc>] (userfaultfd_ioctl+0xff8/0x21c4 fs/userfaultfd.c:2037)
 r10:83839e00 r9:dfa75e98 r8:21000000 r7:00000001 r6:00000000 r5:20000040
 r4:86062000
[<805bd4e4>] (userfaultfd_ioctl) from [<805679ec>] (vfs_ioctl fs/ioctl.c:51 [inline])
[<805bd4e4>] (userfaultfd_ioctl) from [<805679ec>] (do_vfs_ioctl fs/ioctl.c:861 [inline])
[<805bd4e4>] (userfaultfd_ioctl) from [<805679ec>] (__do_sys_ioctl fs/ioctl.c:905 [inline])
[<805bd4e4>] (userfaultfd_ioctl) from [<805679ec>] (sys_ioctl+0x130/0xdc8 fs/ioctl.c:893)
 r10:842e3c00 r9:84ae7780 r8:00000009 r7:20000040 r6:84ae7781 r5:00000000
 r4:c028aa05
[<805678bc>] (sys_ioctl) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:67)
Exception stack(0xdfa75fa8 to 0xdfa75ff0)
5fa0:                   00000000 00000000 00000009 c028aa05 20000040 00000000
5fc0: 00000000 00000000 002f6398 00000036 002e0000 00000000 00006364 76b680bc
5fe0: 76b67ec0 76b67eb0 000193a4 00131fc0
 r10:00000036 r9:842e3c00 r8:8020029c r7:00000036 r6:002f6398 r5:00000000
 r4:00000000
Rebooting in 86400 seconds..