------------[ cut here ]------------
WARNING: CPU: 0 PID: 15080 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: 15080 Comm: syz-executor.1 Not tainted 6.9.0-rc5-syzkaller #0
Hardware name: ARM-Versatile Express
Call trace: 
[<818a1f1c>] (dump_backtrace) from [<818a2018>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:256)
 r7:00000000 r6:82622e44 r5:00000000 r4:81fceddc
[<818a2000>] (show_stack) from [<818bf754>] (__dump_stack lib/dump_stack.c:88 [inline])
[<818a2000>] (show_stack) from [<818bf754>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:114)
[<818bf700>] (dump_stack_lvl) from [<818bf794>] (dump_stack+0x18/0x1c lib/dump_stack.c:123)
 r5:00000000 r4:8285ad18
[<818bf77c>] (dump_stack) from [<818a2ac0>] (panic+0x120/0x358 kernel/panic.c:348)
[<818a29a0>] (panic) from [<802438ec>] (check_panic_on_warn kernel/panic.c:241 [inline])
[<818a29a0>] (panic) from [<802438ec>] (print_tainted+0x0/0xa0 kernel/panic.c:236)
 r3:8260c584 r2:00000001 r1:81fb7b08 r0:81fbf6ac
 r7:80479fcc
[<80243878>] (check_panic_on_warn) from [<80243ae0>] (__warn+0x7c/0x180 kernel/panic.c:694)
[<80243a64>] (__warn) from [<80243d5c>] (warn_slowpath_fmt+0x178/0x1f4 kernel/panic.c:719)
 r8:00000009 r7:81fe5f90 r6:dfb79d0c r5:84429800 r4:00000000
[<80243be8>] (warn_slowpath_fmt) from [<80479fcc>] (kunmap_local_indexed+0x20c/0x224 mm/highmem.c:611)
 r10:841bc600 r9:00000000 r8:00024e80 r7:ffefd0a8 r6:00000003 r5:84429800
 r4:ffefd000
[<80479dc0>] (kunmap_local_indexed) from [<804e8d64>] (__kunmap_local include/linux/highmem-internal.h:94 [inline])
[<80479dc0>] (kunmap_local_indexed) from [<804e8d64>] (move_pages_pte mm/userfaultfd.c:1300 [inline])
[<80479dc0>] (kunmap_local_indexed) from [<804e8d64>] (move_pages+0x7bc/0x13c0 mm/userfaultfd.c:1701)
 r7:ffefd0a8 r6:00000000 r5:00000000 r4:ffefb920
[<804e85a8>] (move_pages) from [<80561594>] (userfaultfd_move fs/userfaultfd.c:2008 [inline])
[<804e85a8>] (move_pages) from [<80561594>] (userfaultfd_ioctl+0x117c/0x20b8 fs/userfaultfd.c:2126)
 r10:20c16000 r9:dfb79e98 r8:20000080 r7:841bc600 r6:00000001 r5:00000000
 r4:84f08180
[<80560418>] (userfaultfd_ioctl) from [<8050ff14>] (vfs_ioctl fs/ioctl.c:51 [inline])
[<80560418>] (userfaultfd_ioctl) from [<8050ff14>] (do_vfs_ioctl fs/ioctl.c:858 [inline])
[<80560418>] (userfaultfd_ioctl) from [<8050ff14>] (__do_sys_ioctl fs/ioctl.c:902 [inline])
[<80560418>] (userfaultfd_ioctl) from [<8050ff14>] (sys_ioctl+0x118/0xc24 fs/ioctl.c:890)
 r10:84ce6240 r9:84429800 r8:00000003 r7:20000080 r6:84ce6241 r5:00000000
 r4:c028aa05
[<8050fdfc>] (sys_ioctl) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:66)
Exception stack(0xdfb79fa8 to 0xdfb79ff0)
9fa0:                   00000000 00000000 00000003 c028aa05 20000080 00000000
9fc0: 00000000 00000000 0014c3e8 00000036 7ed3132e 7ed3132f 003d0f00 76b1c0fc
9fe0: 76b1bf08 76b1bef8 00016ab0 00050bf0
 r10:00000036 r9:84429800 r8:80200288 r7:00000036 r6:0014c3e8 r5:00000000
 r4:00000000
Rebooting in 86400 seconds..