------------[ cut here ]------------
WARNING: CPU: 0 PID: 27092 at mm/highmem.c:622 kunmap_local_indexed+0x210/0x228 mm/highmem.c:622
Modules linked in:
Kernel panic - not syncing: kernel: panic_on_warn set ...
CPU: 0 UID: 0 PID: 27092 Comm: syz.1.5743 Not tainted 6.11.0-rc6-syzkaller #0
Hardware name: ARM-Versatile Express
Call trace: 
[<8195d0e0>] (dump_backtrace) from [<8195d1dc>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257)
 r7:00000000 r6:826228c4 r5:00000000 r4:8200ca8c
[<8195d1c4>] (show_stack) from [<8197af00>] (__dump_stack lib/dump_stack.c:93 [inline])
[<8195d1c4>] (show_stack) from [<8197af00>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:119)
[<8197aeac>] (dump_stack_lvl) from [<8197af40>] (dump_stack+0x18/0x1c lib/dump_stack.c:128)
 r5:00000000 r4:8286dd18
[<8197af28>] (dump_stack) from [<8195dc84>] (panic+0x120/0x368 kernel/panic.c:354)
[<8195db64>] (panic) from [<802421e4>] (check_panic_on_warn kernel/panic.c:243 [inline])
[<8195db64>] (panic) from [<802421e4>] (get_taint+0x0/0x1c kernel/panic.c:238)
 r3:8260c5c4 r2:00000001 r1:81ff52b0 r0:81ffd088
 r7:80481844
[<80242170>] (check_panic_on_warn) from [<80242338>] (__warn+0x7c/0x180 kernel/panic.c:741)
[<802422bc>] (__warn) from [<802425b4>] (warn_slowpath_fmt+0x178/0x1f4 kernel/panic.c:766)
 r8:00000009 r7:820245c0 r6:dfa29d14 r5:84851800 r4:00000000
[<80242440>] (warn_slowpath_fmt) from [<80481844>] (kunmap_local_indexed+0x210/0x228 mm/highmem.c:622)
 r10:ffefd0a8 r9:8410a700 r8:20508000 r7:fffffffe r6:00000003 r5:84851800
 r4:ffefd000
[<80481634>] (kunmap_local_indexed) from [<804f7ecc>] (__kunmap_local include/linux/highmem-internal.h:94 [inline])
[<80481634>] (kunmap_local_indexed) from [<804f7ecc>] (move_pages_pte mm/userfaultfd.c:1326 [inline])
[<80481634>] (kunmap_local_indexed) from [<804f7ecc>] (move_pages+0x7e8/0x149c mm/userfaultfd.c:1727)
 r7:fffffffe r6:00000000 r5:99d6a810 r4:ffefb840
[<804f76e4>] (move_pages) from [<80572ee4>] (userfaultfd_move fs/userfaultfd.c:2016 [inline])
[<804f76e4>] (move_pages) from [<80572ee4>] (userfaultfd_ioctl+0x1260/0x2314 fs/userfaultfd.c:2139)
 r10:20c16000 r9:dfa29e98 r8:20000080 r7:8410a700 r6:00000001 r5:00000000
 r4:8526b000
[<80571c84>] (userfaultfd_ioctl) from [<80520dac>] (vfs_ioctl fs/ioctl.c:51 [inline])
[<80571c84>] (userfaultfd_ioctl) from [<80520dac>] (do_vfs_ioctl fs/ioctl.c:861 [inline])
[<80571c84>] (userfaultfd_ioctl) from [<80520dac>] (__do_sys_ioctl fs/ioctl.c:905 [inline])
[<80571c84>] (userfaultfd_ioctl) from [<80520dac>] (sys_ioctl+0x134/0xda4 fs/ioctl.c:893)
 r10:84851800 r9:00000003 r8:84744240 r7:20000080 r6:84744241 r5:00000000
 r4:c028aa05
[<80520c78>] (sys_ioctl) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:67)
Exception stack(0xdfa29fa8 to 0xdfa29ff0)
9fa0:                   00000000 00000000 00000003 c028aa05 20000080 00000000
9fc0: 00000000 00000000 00276380 00000036 00000000 00006364 003d0f00 76b3e0bc
9fe0: 76b3dec0 76b3deb0 000189f0 00132dd0
 r10:00000036 r9:84851800 r8:8020029c r7:00000036 r6:00276380 r5:00000000
 r4:00000000
Rebooting in 86400 seconds..