------------[ cut here ]------------
WARNING: CPU: 1 PID: 5274 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: 5274 Comm: syz.1.495 Not tainted 6.12.0-syzkaller #0
Hardware name: ARM-Versatile Express
Call trace: 
[<819a4c38>] (dump_backtrace) from [<819a4d34>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257)
 r7:00000000 r6:82622f84 r5:00000000 r4:8203f4b0
[<819a4d1c>] (show_stack) from [<819c2e28>] (__dump_stack lib/dump_stack.c:94 [inline])
[<819a4d1c>] (show_stack) from [<819c2e28>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:120)
[<819c2dd4>] (dump_stack_lvl) from [<819c2e68>] (dump_stack+0x18/0x1c lib/dump_stack.c:129)
 r5:00000000 r4:82871d18
[<819c2e50>] (dump_stack) from [<819a5860>] (panic+0x120/0x374 kernel/panic.c:354)
[<819a5740>] (panic) from [<802420d8>] (check_panic_on_warn kernel/panic.c:243 [inline])
[<819a5740>] (panic) from [<802420d8>] (get_taint+0x0/0x1c kernel/panic.c:238)
 r3:8260c604 r2:00000001 r1:82027874 r0:8202f328
 r7:8048d4c0
[<80242064>] (check_panic_on_warn) from [<8024223c>] (__warn+0x80/0x188 kernel/panic.c:748)
[<802421bc>] (__warn) from [<802424bc>] (warn_slowpath_fmt+0x178/0x1f4 kernel/panic.c:775)
 r8:00000009 r7:82057110 r6:dfcd9d24 r5:84e2e000 r4:00000000
[<80242348>] (warn_slowpath_fmt) from [<8048d4c0>] (kunmap_local_indexed+0x20c/0x224 mm/highmem.c:622)
 r10:ffedcfe8 r9:83a0d200 r8:20000000 r7:00000000 r6:00000003 r5:84e2e000
 r4:ffedc000
[<8048d2b4>] (kunmap_local_indexed) from [<80507174>] (__kunmap_local include/linux/highmem-internal.h:94 [inline])
[<8048d2b4>] (kunmap_local_indexed) from [<80507174>] (move_pages_pte mm/userfaultfd.c:1329 [inline])
[<8048d2b4>] (kunmap_local_indexed) from [<80507174>] (move_pages+0x7e8/0x149c mm/userfaultfd.c:1730)
 r7:00000000 r6:842b4180 r5:dedaa084 r4:ffeda000
[<8050698c>] (move_pages) from [<805855e8>] (userfaultfd_move fs/userfaultfd.c:1899 [inline])
[<8050698c>] (move_pages) from [<805855e8>] (userfaultfd_ioctl+0x111c/0x2080 fs/userfaultfd.c:2022)
 r10:83a0d200 r9:dfcd9e98 r8:00000001 r7:21000000 r6:00000000 r5:20000040
 r4:84f17000
[<805844cc>] (userfaultfd_ioctl) from [<80531118>] (vfs_ioctl fs/ioctl.c:51 [inline])
[<805844cc>] (userfaultfd_ioctl) from [<80531118>] (do_vfs_ioctl fs/ioctl.c:860 [inline])
[<805844cc>] (userfaultfd_ioctl) from [<80531118>] (__do_sys_ioctl fs/ioctl.c:904 [inline])
[<805844cc>] (userfaultfd_ioctl) from [<80531118>] (sys_ioctl+0x138/0xd88 fs/ioctl.c:892)
 r10:84e2e000 r9:00000003 r8:848d9000 r7:20000040 r6:848d9001 r5:00000000
 r4:c028aa05
[<80530fe0>] (sys_ioctl) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:67)
Exception stack(0xdfcd9fa8 to 0xdfcd9ff0)
9fa0:                   00000000 00000000 00000003 c028aa05 20000040 00000000
9fc0: 00000000 00000000 002862f0 00000036 00000000 00006364 003d0f00 76bb20bc
9fe0: 76bb1ec0 76bb1eb0 00018af0 00133450
 r10:00000036 r9:84e2e000 r8:8020029c r7:00000036 r6:002862f0 r5:00000000
 r4:00000000
Rebooting in 86400 seconds..