------------[ cut here ]------------
WARNING: CPU: 0 PID: 15281 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: 15281 Comm: syz.0.2425 Not tainted 6.12.0-syzkaller #0
Hardware name: ARM-Versatile Express
Call trace: 
[<819a01f8>] (dump_backtrace) from [<819a02f4>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257)
 r7:00000000 r6:82622f84 r5:00000000 r4:8203e950
[<819a02dc>] (show_stack) from [<819be7c0>] (__dump_stack lib/dump_stack.c:94 [inline])
[<819a02dc>] (show_stack) from [<819be7c0>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:120)
[<819be76c>] (dump_stack_lvl) from [<819be800>] (dump_stack+0x18/0x1c lib/dump_stack.c:129)
 r5:00000000 r4:82871d18
[<819be7e8>] (dump_stack) from [<819a0e20>] (panic+0x120/0x374 kernel/panic.c:354)
[<819a0d00>] (panic) from [<802420d8>] (check_panic_on_warn kernel/panic.c:243 [inline])
[<819a0d00>] (panic) from [<802420d8>] (get_taint+0x0/0x1c kernel/panic.c:238)
 r3:8260c604 r2:00000001 r1:82026cdc r0:8202e790
 r7:8048d398
[<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 r7:82056584 r6:dfa39d24 r5:84666c00 r4:00000000
[<80242348>] (warn_slowpath_fmt) from [<8048d398>] (kunmap_local_indexed+0x20c/0x224 mm/highmem.c:622)
 r10:ffefdfe8 r9:83e46a00 r8:20000000 r7:00000000 r6:00000003 r5:84666c00
 r4:ffefd000
[<8048d18c>] (kunmap_local_indexed) from [<80507144>] (__kunmap_local include/linux/highmem-internal.h:94 [inline])
[<8048d18c>] (kunmap_local_indexed) from [<80507144>] (move_pages_pte mm/userfaultfd.c:1329 [inline])
[<8048d18c>] (kunmap_local_indexed) from [<80507144>] (move_pages+0x7e8/0x149c mm/userfaultfd.c:1730)
 r7:00000000 r6:84113d80 r5:def96384 r4:ffefb000
[<8050695c>] (move_pages) from [<805852a8>] (userfaultfd_move fs/userfaultfd.c:1899 [inline])
[<8050695c>] (move_pages) from [<805852a8>] (userfaultfd_ioctl+0x111c/0x2080 fs/userfaultfd.c:2022)
 r10:83e46a00 r9:dfa39e98 r8:00000001 r7:21000000 r6:00000000 r5:20000040
 r4:850d4100
[<8058418c>] (userfaultfd_ioctl) from [<80531130>] (vfs_ioctl fs/ioctl.c:51 [inline])
[<8058418c>] (userfaultfd_ioctl) from [<80531130>] (__do_sys_ioctl fs/ioctl.c:907 [inline])
[<8058418c>] (userfaultfd_ioctl) from [<80531130>] (sys_ioctl+0x134/0xd98 fs/ioctl.c:893)
 r10:84666c00 r9:85364e40 r8:00000003 r7:20000040 r6:85364e41 r5:00000000
 r4:c028aa05
[<80530ffc>] (sys_ioctl) from [<8020028c>] (__sys_trace_return+0x0/0x10)
Exception stack(0xdfa39fa8 to 0xdfa39ff0)
9fa0:                   00000000 00000000 00000003 c028aa05 20000040 00000000
9fc0: 00000000 00000000 002862f0 00000036 00000000 00006364 003d0f00 76b620bc
9fe0: 76b61ec0 76b61eb0 00018af0 00133450
 r10:00000036 r9:84666c00 r8:8020029c r7:00000036 r6:002862f0 r5:00000000
 r4:00000000
Rebooting in 86400 seconds..