------------[ cut here ]------------
WARNING: CPU: 1 PID: 5199 at mm/highmem.c:611 kunmap_local_indexed+0x210/0x228 mm/highmem.c:611
Modules linked in:
Kernel panic - not syncing: kernel: panic_on_warn set ...
CPU: 1 PID: 5199 Comm: syz.0.511 Not tainted 6.10.0-syzkaller #0
Hardware name: ARM-Versatile Express
Call trace: 
[<818e7f40>] (dump_backtrace) from [<818e803c>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257)
 r7:00000000 r6:82622804 r5:00000000 r4:81fe6c3c
[<818e8024>] (show_stack) from [<8190568c>] (__dump_stack lib/dump_stack.c:88 [inline])
[<818e8024>] (show_stack) from [<8190568c>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:114)
[<81905638>] (dump_stack_lvl) from [<819056cc>] (dump_stack+0x18/0x1c lib/dump_stack.c:123)
 r5:00000000 r4:82861d0c
[<819056b4>] (dump_stack) from [<818e8ae4>] (panic+0x120/0x358 kernel/panic.c:347)
[<818e89c4>] (panic) from [<80241f54>] (check_panic_on_warn kernel/panic.c:240 [inline])
[<818e89c4>] (panic) from [<80241f54>] (print_tainted+0x0/0xa0 kernel/panic.c:235)
 r3:8260c5c4 r2:00000001 r1:81fcfd64 r0:81fd73ec
 r7:80480f40
[<80241ee0>] (check_panic_on_warn) from [<80242148>] (__warn+0x7c/0x180 kernel/panic.c:693)
[<802420cc>] (__warn) from [<802423c4>] (warn_slowpath_fmt+0x178/0x1f4 kernel/panic.c:718)
 r8:00000009 r7:81ffe3b0 r6:dfec9d14 r5:855c1800 r4:00000000
[<80242250>] (warn_slowpath_fmt) from [<80480f40>] (kunmap_local_indexed+0x210/0x228 mm/highmem.c:611)
 r10:ffedcfe8 r9:84112400 r8:20000000 r7:fffffff0 r6:00000003 r5:855c1800
 r4:ffedc000
[<80480d30>] (kunmap_local_indexed) from [<804f2e04>] (__kunmap_local include/linux/highmem-internal.h:94 [inline])
[<80480d30>] (kunmap_local_indexed) from [<804f2e04>] (move_pages_pte mm/userfaultfd.c:1332 [inline])
[<80480d30>] (kunmap_local_indexed) from [<804f2e04>] (move_pages+0x7e8/0x149c mm/userfaultfd.c:1733)
 r7:fffffff0 r6:eabf175f r5:decfbde4 r4:ffeda000
[<804f261c>] (move_pages) from [<8056cbd4>] (userfaultfd_move fs/userfaultfd.c:2016 [inline])
[<804f261c>] (move_pages) from [<8056cbd4>] (userfaultfd_ioctl+0x125c/0x2310 fs/userfaultfd.c:2139)
 r10:21000000 r9:dfec9e98 r8:20000040 r7:84112400 r6:00000001 r5:00000000
 r4:851db000
[<8056b978>] (userfaultfd_ioctl) from [<8051ad88>] (vfs_ioctl fs/ioctl.c:51 [inline])
[<8056b978>] (userfaultfd_ioctl) from [<8051ad88>] (do_vfs_ioctl fs/ioctl.c:861 [inline])
[<8056b978>] (userfaultfd_ioctl) from [<8051ad88>] (__do_sys_ioctl fs/ioctl.c:905 [inline])
[<8056b978>] (userfaultfd_ioctl) from [<8051ad88>] (sys_ioctl+0x134/0xda4 fs/ioctl.c:893)
 r10:855c1800 r9:00000004 r8:84538780 r7:20000040 r6:84538781 r5:00000000
 r4:c028aa05
[<8051ac54>] (sys_ioctl) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:67)
Exception stack(0xdfec9fa8 to 0xdfec9ff0)
9fa0:                   00000000 00000000 00000004 c028aa05 20000040 00000000
9fc0: 00000000 00000000 002662e0 00000036 7e811766 7e811767 003d0f00 76b1f0bc
9fe0: 76b1eec8 76b1eeb8 00018444 001306b0
 r10:00000036 r9:855c1800 r8:8020029c r7:00000036 r6:002662e0 r5:00000000
 r4:00000000
Rebooting in 86400 seconds..