------------[ cut here ]------------
WARNING: CPU: 1 PID: 8535 at mm/highmem.c:622 kunmap_local_indexe
WARNING: CPU: 1 PID: 8535 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: 1 UID: 0 PID: 8535 Comm: syz.2.12800 Not tainted 6.16.0-syzkaller #0 PREEMPT 
Hardware name: ARM-Versatile Express
Call trace: 
[<80201a20>] (dump_backtrace) from [<80201b1c>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257)
 r7:00000000 r6:8281fa3c r5:00000000 r4:82249da0
[<80201b04>] (show_stack) from [<8021fd7c>] (__dump_stack lib/dump_stack.c:94 [inline])
[<80201b04>] (show_stack) from [<8021fd7c>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:120)
[<8021fd28>] (dump_stack_lvl) from [<8021fdbc>] (dump_stack+0x18/0x1c lib/dump_stack.c:129)
 r5:00000000 r4:82a6cd18
[<8021fda4>] (dump_stack) from [<80202634>] (panic+0x120/0x374 kernel/panic.c:382)
[<80202514>] (panic) from [<80254700>] (check_panic_on_warn kernel/panic.c:273 [inline])
[<80202514>] (panic) from [<80254700>] (get_taint+0x0/0x1c kernel/panic.c:268)
 r3:8280c684 r2:00000001 r1:822308dc r0:82238284
 r7:804b84fc
[<8025468c>] (check_panic_on_warn) from [<80254864>] (__warn+0x80/0x188 kernel/panic.c:777)
[<802547e4>] (__warn) from [<80254ae4>] (warn_slowpath_fmt+0x178/0x1f4 kernel/panic.c:804)
 r8:00000009 r7:82263b78 r6:dfbc1d1c r5:84ae5400 r4:00000000
[<80254970>] (warn_slowpath_fmt) from [<804b84fc>] (kunmap_local_indexed+0x20c/0x224 mm/highmem.c:622)
 r10:00000000 r9:deb66e40 r8:dee0f004 r7:00a00000 r6:00000003 r5:84ae5400
 r4:ffedc000
[<804b82f0>] (kunmap_local_indexed) from [<80533760>] (__kunmap_local include/linux/highmem-internal.h:102 [inline])
[<804b82f0>] (kunmap_local_indexed) from [<80533760>] (move_pages_pte mm/userfaultfd.c:1457 [inline])
[<804b82f0>] (kunmap_local_indexed) from [<80533760>] (move_pages+0xb24/0x19c8 mm/userfaultfd.c:1868)
 r7:00a00000 r6:fffffff0 r5:85b7b914 r4:85ec6700
[<80532c3c>] (move_pages) from [<805bad74>] (userfaultfd_move fs/userfaultfd.c:1914 [inline])
[<80532c3c>] (move_pages) from [<805bad74>] (userfaultfd_ioctl+0xff8/0x21c4 fs/userfaultfd.c:2037)
 r10:85ec6700 r9:dfbc1e98 r8:21000000 r7:00000001 r6:00000000 r5:20000100
 r4:85928680
[<805b9d7c>] (userfaultfd_ioctl) from [<80563818>] (vfs_ioctl fs/ioctl.c:51 [inline])
[<805b9d7c>] (userfaultfd_ioctl) from [<80563818>] (do_vfs_ioctl fs/ioctl.c:552 [inline])
[<805b9d7c>] (userfaultfd_ioctl) from [<80563818>] (__do_sys_ioctl fs/ioctl.c:596 [inline])
[<805b9d7c>] (userfaultfd_ioctl) from [<80563818>] (sys_ioctl+0x130/0xba0 fs/ioctl.c:584)
 r10:84ae5400 r9:00000005 r8:84d5b180 r7:20000100 r6:84d5b181 r5:00000000
 r4:c028aa05
[<805636e8>] (sys_ioctl) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:67)
Exception stack(0xdfbc1fa8 to 0xdfbc1ff0)
1fa0:                   00000000 00000000 00000005 c028aa05 20000100 00000000
1fc0: 00000000 00000000 002f6398 00000036 002e0000 00000000 00006364 76b5a0bc
1fe0: 76b59ec0 76b59eb0 000193a4 00131fc0
 r10:00000036 r9:84ae5400 r8:8020029c r7:00000036 r6:002f6398 r5:00000000
 r4:00000000
Rebooting in 86400 seconds..