------------[ cut here ]------------
WARNING: CPU: 0 PID: 25369 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: 0 UID: 0 PID: 25369 Comm: syz.1.5371 Not tainted 6.12.0-syzkaller #0
Hardware name: ARM-Versatile Express
Call trace: 
[<8199d478>] (dump_backtrace) from [<8199d574>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257)
 r7:00000000 r6:82622f44 r5:00000000 r4:8203df48
[<8199d55c>] (show_stack) from [<819bba40>] (__dump_stack lib/dump_stack.c:94 [inline])
[<8199d55c>] (show_stack) from [<819bba40>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:120)
[<819bb9ec>] (dump_stack_lvl) from [<819bba80>] (dump_stack+0x18/0x1c lib/dump_stack.c:129)
 r5:00000000 r4:82870d18
[<819bba68>] (dump_stack) from [<8199e0a0>] (panic+0x120/0x374 kernel/panic.c:354)
[<8199df80>] (panic) from [<802420d8>] (check_panic_on_warn kernel/panic.c:243 [inline])
[<8199df80>] (panic) from [<802420d8>] (get_taint+0x0/0x1c kernel/panic.c:238)
 r3:8260c5c4 r2:00000001 r1:82026320 r0:8202dd88
 r7:8048cc2c
[<80242064>] (check_panic_on_warn) from [<8024223c>] (__warn+0x80/0x188 kernel/panic.c:748)
[<802421bc>] (__warn) from [<802424bc>] (warn_slowpath_fmt+0x178/0x1f4 kernel/panic.c:775)
 r8:00000009 r7:82055a40 r6:edf55d24 r5:83672400 r4:00000000
[<80242348>] (warn_slowpath_fmt) from [<8048cc2c>] (kunmap_local_indexed+0x20c/0x224 mm/highmem.c:622)
 r10:ffefdfe8 r9:83ac5800 r8:20000000 r7:00000000 r6:00000003 r5:83672400
 r4:ffefd000
[<8048ca20>] (kunmap_local_indexed) from [<805069d4>] (__kunmap_local include/linux/highmem-internal.h:94 [inline])
[<8048ca20>] (kunmap_local_indexed) from [<805069d4>] (move_pages_pte mm/userfaultfd.c:1329 [inline])
[<8048ca20>] (kunmap_local_indexed) from [<805069d4>] (move_pages+0x7e8/0x149c mm/userfaultfd.c:1730)
 r7:00000000 r6:85292900 r5:def9726c r4:ffefb000
[<805061ec>] (move_pages) from [<80582e98>] (userfaultfd_move fs/userfaultfd.c:1899 [inline])
[<805061ec>] (move_pages) from [<80582e98>] (userfaultfd_ioctl+0x111c/0x2080 fs/userfaultfd.c:2022)
 r10:83ac5800 r9:edf55e98 r8:00000001 r7:21000000 r6:00000000 r5:20000040
 r4:85113080
[<80581d7c>] (userfaultfd_ioctl) from [<805306e4>] (vfs_ioctl fs/ioctl.c:51 [inline])
[<80581d7c>] (userfaultfd_ioctl) from [<805306e4>] (__do_sys_ioctl fs/ioctl.c:907 [inline])
[<80581d7c>] (userfaultfd_ioctl) from [<805306e4>] (sys_ioctl+0x134/0xd98 fs/ioctl.c:893)
 r10:83672400 r9:8528fd80 r8:00000003 r7:20000040 r6:8528fd81 r5:00000000
 r4:c028aa05
[<805305b0>] (sys_ioctl) from [<8020028c>] (__sys_trace_return+0x0/0x10)
Exception stack(0xedf55fa8 to 0xedf55ff0)
5fa0:                   00000000 00000000 00000003 c028aa05 20000040 00000000
5fc0: 00000000 00000000 002862f0 00000036 00000000 00006364 003d0f00 76bf20bc
5fe0: 76bf1ec0 76bf1eb0 00018af0 00133450
 r10:00000036 r9:83672400 r8:8020029c r7:00000036 r6:002862f0 r5:00000000
 r4:00000000
Rebooting in 86400 seconds..