------------[ cut here ]------------
WARNING: CPU: 0 PID: 5935 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: 5935 Comm: syz.1.573 Not tainted 6.12.0-syzkaller #0
Hardware name: ARM-Versatile Express
Call trace: 
[<819a6c18>] (dump_backtrace) from [<819a6d14>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257)
 r7:00000000 r6:82623184 r5:00000000 r4:8203faa4
[<819a6cfc>] (show_stack) from [<819c4e08>] (__dump_stack lib/dump_stack.c:94 [inline])
[<819a6cfc>] (show_stack) from [<819c4e08>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:120)
[<819c4db4>] (dump_stack_lvl) from [<819c4e48>] (dump_stack+0x18/0x1c lib/dump_stack.c:129)
 r5:00000000 r4:82871d18
[<819c4e30>] (dump_stack) from [<819a7840>] (panic+0x120/0x374 kernel/panic.c:354)
[<819a7720>] (panic) from [<80242598>] (check_panic_on_warn kernel/panic.c:243 [inline])
[<819a7720>] (panic) from [<80242598>] (get_taint+0x0/0x1c kernel/panic.c:238)
 r3:8260c604 r2:00000001 r1:82027e10 r0:8202f8c4
 r7:8048dd98
[<80242524>] (check_panic_on_warn) from [<802426fc>] (__warn+0x80/0x188 kernel/panic.c:748)
[<8024267c>] (__warn) from [<8024297c>] (warn_slowpath_fmt+0x178/0x1f4 kernel/panic.c:775)
 r8:00000009 r7:82057704 r6:dfa8dd24 r5:84dca400 r4:00000000
[<80242808>] (warn_slowpath_fmt) from [<8048dd98>] (kunmap_local_indexed+0x20c/0x224 mm/highmem.c:622)
 r10:ffefdfe8 r9:843eed00 r8:20000000 r7:00000000 r6:00000003 r5:84dca400
 r4:ffefd000
[<8048db8c>] (kunmap_local_indexed) from [<80507a4c>] (__kunmap_local include/linux/highmem-internal.h:94 [inline])
[<8048db8c>] (kunmap_local_indexed) from [<80507a4c>] (move_pages_pte mm/userfaultfd.c:1329 [inline])
[<8048db8c>] (kunmap_local_indexed) from [<80507a4c>] (move_pages+0x7e8/0x149c mm/userfaultfd.c:1730)
 r7:00000000 r6:82f8f600 r5:defae270 r4:ffefb000
[<80507264>] (move_pages) from [<80585ec0>] (userfaultfd_move fs/userfaultfd.c:1899 [inline])
[<80507264>] (move_pages) from [<80585ec0>] (userfaultfd_ioctl+0x111c/0x2080 fs/userfaultfd.c:2022)
 r10:843eed00 r9:dfa8de98 r8:00000001 r7:21000000 r6:00000000 r5:20000040
 r4:842bf080
[<80584da4>] (userfaultfd_ioctl) from [<805319f0>] (vfs_ioctl fs/ioctl.c:51 [inline])
[<80584da4>] (userfaultfd_ioctl) from [<805319f0>] (do_vfs_ioctl fs/ioctl.c:860 [inline])
[<80584da4>] (userfaultfd_ioctl) from [<805319f0>] (__do_sys_ioctl fs/ioctl.c:904 [inline])
[<80584da4>] (userfaultfd_ioctl) from [<805319f0>] (sys_ioctl+0x138/0xd88 fs/ioctl.c:892)
 r10:84dca400 r9:00000003 r8:84fde900 r7:20000040 r6:84fde901 r5:00000000
 r4:c028aa05
[<805318b8>] (sys_ioctl) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:67)
Exception stack(0xdfa8dfa8 to 0xdfa8dff0)
dfa0:                   00000000 00000000 00000003 c028aa05 20000040 00000000
dfc0: 00000000 00000000 002862f0 00000036 00000000 00006364 003d0f00 76b290bc
dfe0: 76b28ec0 76b28eb0 00018af0 00133450
 r10:00000036 r9:84dca400 r8:8020029c r7:00000036 r6:002862f0 r5:00000000
 r4:00000000
Rebooting in 86400 seconds..