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WARNING: CPU: 1 PID: 4520 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: 4520 Comm: syz.0.121 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 r4:8224a6e0
[<80201b04>] (show_stack) from [<8021fa84>] (__dump_stack lib/dump_stack.c:94 [inline])
[<80201b04>] (show_stack) from [<8021fa84>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:120)
[<8021fa30>] (dump_stack_lvl) from [<8021fac4>] (dump_stack+0x18/0x1c lib/dump_stack.c:129)
 r5:00000000 r4:82a6cd18
[<8021faac>] (dump_stack) from [<80202634>] (panic+0x120/0x374 kernel/panic.c:442)
[<80202514>] (panic) from [<802548dc>] (check_panic_on_warn kernel/panic.c:333 [inline])
[<80202514>] (panic) from [<802548dc>] (get_taint+0x0/0x1c kernel/panic.c:328)
 r3:8280c684 r2:00000001 r1:82231124 r0:82238aec
 r7:804ba3fc
[<80254868>] (check_panic_on_warn) from [<80254a40>] (__warn+0x80/0x188 kernel/panic.c:837)
[<802549c0>] (__warn) from [<80254cc0>] (warn_slowpath_fmt+0x178/0x1f4 kernel/panic.c:864)
 r8:00000009 r7:822644b8 r6:dfa5dd1c r5:85650000 r4:00000000
[<80254b4c>] (warn_slowpath_fmt) from [<804ba3fc>] (kunmap_local_indexed+0x20c/0x224 mm/highmem.c:622)
 r10:00000000 r9:decd1dec r8:decc47ac r7:00a00000 r6:00000003 r5:85650000
 r4:ffedc000
[<804ba1f0>] (kunmap_local_indexed) from [<80535668>] (__kunmap_local include/linux/highmem-internal.h:102 [inline])
[<804ba1f0>] (kunmap_local_indexed) from [<80535668>] (move_pages_pte mm/userfaultfd.c:1457 [inline])
[<804ba1f0>] (kunmap_local_indexed) from [<80535668>] (move_pages+0xb24/0x19c8 mm/userfaultfd.c:1868)
 r7:00a00000 r6:00000000 r5:848076ac r4:84aa6080
[<80534b44>] (move_pages) from [<805bccb4>] (userfaultfd_move fs/userfaultfd.c:1914 [inline])
[<80534b44>] (move_pages) from [<805bccb4>] (userfaultfd_ioctl+0xff8/0x21c4 fs/userfaultfd.c:2037)
 r10:84aa6080 r9:dfa5de98 r8:21000000 r7:00000001 r6:00000000 r5:20000040
 r4:85822000
[<805bbcbc>] (userfaultfd_ioctl) from [<80565734>] (vfs_ioctl fs/ioctl.c:51 [inline])
[<805bbcbc>] (userfaultfd_ioctl) from [<80565734>] (do_vfs_ioctl fs/ioctl.c:552 [inline])
[<805bbcbc>] (userfaultfd_ioctl) from [<80565734>] (__do_sys_ioctl fs/ioctl.c:596 [inline])
[<805bbcbc>] (userfaultfd_ioctl) from [<80565734>] (sys_ioctl+0x130/0xba0 fs/ioctl.c:584)
 r10:85650000 r9:00000003 r8:85951000 r7:20000040 r6:85951001 r5:00000000
 r4:c028aa05
[<80565604>] (sys_ioctl) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:67)
Exception stack(0xdfa5dfa8 to 0xdfa5dff0)
dfa0:                   00000000 00000000 00000003 c028aa05 20000040 00000000
dfc0: 00000000 00000000 002f6300 00000036 002e0000 00000000 00006364 76b490bc
dfe0: 76b48ec0 76b48eb0 000193a4 00131fc0
 r10:00000036 r9:85650000 r8:8020029c r7:00000036 r6:002f6300 r5:00000000
 r4:00000000
Rebooting in 86400 seconds..