------------[ cut here ]------------
WARNING: CPU: 1 PID: 4550 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: 4550 Comm: syz.2.124 Not tainted 6.16.0-syzkaller #0 PREEMPT 
Hardware name: ARM-Versatile Express
Call trace: 
[<80201a20>] (dump_backtrace) from [<80201b1c>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257)
 r7:00000000 r6:8281fa3c r5:00000000 r4:8224a358
[<80201b04>] (show_stack) from [<8021facc>] (__dump_stack lib/dump_stack.c:94 [inline])
[<80201b04>] (show_stack) from [<8021facc>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:120)
[<8021fa78>] (dump_stack_lvl) from [<8021fb0c>] (dump_stack+0x18/0x1c lib/dump_stack.c:129)
 r5:00000000 r4:82a6cd18
[<8021faf4>] (dump_stack) from [<80202634>] (panic+0x120/0x374 kernel/panic.c:382)
[<80202514>] (panic) from [<80254748>] (check_panic_on_warn kernel/panic.c:273 [inline])
[<80202514>] (panic) from [<80254748>] (get_taint+0x0/0x1c kernel/panic.c:268)
 r3:8280c684 r2:00000001 r1:82230e78 r0:82238820
 r7:804b9984
[<802546d4>] (check_panic_on_warn) from [<802548ac>] (__warn+0x80/0x188 kernel/panic.c:777)
[<8025482c>] (__warn) from [<80254b2c>] (warn_slowpath_fmt+0x178/0x1f4 kernel/panic.c:804)
 r8:00000009 r7:82264130 r6:dfebdd1c r5:86012400 r4:00000000
[<802549b8>] (warn_slowpath_fmt) from [<804b9984>] (kunmap_local_indexed+0x20c/0x224 mm/highmem.c:622)
 r10:00000000 r9:deb60c3c r8:deb655b4 r7:00a00000 r6:00000003 r5:86012400
 r4:ffedc000
[<804b9778>] (kunmap_local_indexed) from [<80534bf0>] (__kunmap_local include/linux/highmem-internal.h:102 [inline])
[<804b9778>] (kunmap_local_indexed) from [<80534bf0>] (move_pages_pte mm/userfaultfd.c:1457 [inline])
[<804b9778>] (kunmap_local_indexed) from [<80534bf0>] (move_pages+0xb24/0x19c8 mm/userfaultfd.c:1868)
 r7:00a00000 r6:fffffff0 r5:84bd0674 r4:84a3a700
[<805340cc>] (move_pages) from [<805bc204>] (userfaultfd_move fs/userfaultfd.c:1914 [inline])
[<805340cc>] (move_pages) from [<805bc204>] (userfaultfd_ioctl+0xff8/0x21c4 fs/userfaultfd.c:2037)
 r10:84a3a700 r9:dfebde98 r8:21000000 r7:00000001 r6:00000000 r5:20000100
 r4:86128000
[<805bb20c>] (userfaultfd_ioctl) from [<80564ca8>] (vfs_ioctl fs/ioctl.c:51 [inline])
[<805bb20c>] (userfaultfd_ioctl) from [<80564ca8>] (do_vfs_ioctl fs/ioctl.c:552 [inline])
[<805bb20c>] (userfaultfd_ioctl) from [<80564ca8>] (__do_sys_ioctl fs/ioctl.c:596 [inline])
[<805bb20c>] (userfaultfd_ioctl) from [<80564ca8>] (sys_ioctl+0x130/0xba0 fs/ioctl.c:584)
 r10:86012400 r9:00000003 r8:85d14d80 r7:20000100 r6:85d14d81 r5:00000000
 r4:c028aa05
[<80564b78>] (sys_ioctl) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:67)
Exception stack(0xdfebdfa8 to 0xdfebdff0)
dfa0:                   00000000 00000000 00000003 c028aa05 20000100 00000000
dfc0: 00000000 00000000 002f6300 00000036 002e0000 00000000 00006364 76ba50bc
dfe0: 76ba4ec0 76ba4eb0 000193a4 00131fc0
 r10:00000036 r9:86012400 r8:8020029c r7:00000036 r6:002f6300 r5:00000000
 r4:00000000
Rebooting in 86400 seconds..