------------[ cut here ]------------
WARNING: CPU: 0 PID: 6316 at mm/highmem.c:611 kunmap_local_indexed+0x20c/0x224 mm/highmem.c:611
Modules linked in:
Kernel panic - not syncing: kernel: panic_on_warn set ...
CPU: 0 PID: 6316 Comm: syz.0.461 Not tainted 6.10.0-rc7-syzkaller #0
Hardware name: ARM-Versatile Express
Call trace: 
[<818d4fd8>] (dump_backtrace) from [<818d50d4>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257)
 r7:00000000 r6:82622d44 r5:00000000 r4:81fe1570
[<818d50bc>] (show_stack) from [<818f273c>] (__dump_stack lib/dump_stack.c:88 [inline])
[<818d50bc>] (show_stack) from [<818f273c>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:114)
[<818f26e8>] (dump_stack_lvl) from [<818f277c>] (dump_stack+0x18/0x1c lib/dump_stack.c:123)
 r5:00000000 r4:8285fd18
[<818f2764>] (dump_stack) from [<818d5b7c>] (panic+0x120/0x358 kernel/panic.c:347)
[<818d5a5c>] (panic) from [<80243dcc>] (check_panic_on_warn kernel/panic.c:240 [inline])
[<818d5a5c>] (panic) from [<80243dcc>] (print_tainted+0x0/0xa0 kernel/panic.c:235)
 r3:8260c5c4 r2:00000001 r1:81fca1dc r0:81fd1e34
 r7:80480ee0
[<80243d58>] (check_panic_on_warn) from [<80243fc0>] (__warn+0x7c/0x180 kernel/panic.c:693)
[<80243f44>] (__warn) from [<8024423c>] (warn_slowpath_fmt+0x178/0x1f4 kernel/panic.c:718)
 r8:00000009 r7:81ff8ab4 r6:dfd51d14 r5:82ef6c00 r4:00000000
[<802440c8>] (warn_slowpath_fmt) from [<80480ee0>] (kunmap_local_indexed+0x20c/0x224 mm/highmem.c:611)
 r10:ffefd0a8 r9:84047000 r8:20508000 r7:fffffffe r6:00000003 r5:82ef6c00
 r4:ffefd000
[<80480cd4>] (kunmap_local_indexed) from [<804f28a4>] (__kunmap_local include/linux/highmem-internal.h:94 [inline])
[<80480cd4>] (kunmap_local_indexed) from [<804f28a4>] (move_pages_pte mm/userfaultfd.c:1332 [inline])
[<80480cd4>] (kunmap_local_indexed) from [<804f28a4>] (move_pages+0x7e8/0x149c mm/userfaultfd.c:1733)
 r7:fffffffe r6:00000000 r5:8722a810 r4:ffefb840
[<804f20bc>] (move_pages) from [<8056b0a8>] (userfaultfd_move fs/userfaultfd.c:2016 [inline])
[<804f20bc>] (move_pages) from [<8056b0a8>] (userfaultfd_ioctl+0x1278/0x2314 fs/userfaultfd.c:2134)
 r10:20c16000 r9:dfd51e98 r8:20000080 r7:84047000 r6:00000001 r5:00000000
 r4:84e67000
[<80569e30>] (userfaultfd_ioctl) from [<8051a5a8>] (vfs_ioctl fs/ioctl.c:51 [inline])
[<80569e30>] (userfaultfd_ioctl) from [<8051a5a8>] (do_vfs_ioctl fs/ioctl.c:861 [inline])
[<80569e30>] (userfaultfd_ioctl) from [<8051a5a8>] (__do_sys_ioctl fs/ioctl.c:905 [inline])
[<80569e30>] (userfaultfd_ioctl) from [<8051a5a8>] (sys_ioctl+0x134/0xda4 fs/ioctl.c:893)
 r10:82ef6c00 r9:00000005 r8:8406d900 r7:20000080 r6:8406d901 r5:00000000
 r4:c028aa05
[<8051a474>] (sys_ioctl) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:67)
Exception stack(0xdfd51fa8 to 0xdfd51ff0)
1fa0:                   00000000 00000000 00000005 c028aa05 20000080 00000000
1fc0: 00000000 00000000 002542e0 00000036 7ebdc776 7ebdc777 003d0f00 76b740bc
1fe0: 76b73ec8 76b73eb8 00018374 00130460
 r10:00000036 r9:82ef6c00 r8:8020029c r7:00000036 r6:002542e0 r5:00000000
 r4:00000000
Rebooting in 86400 seconds..