------------[ cut here ]------------
WARNING: CPU: 0 PID: 4460 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: 0 UID: 0 PID: 4460 Comm: syz.1.173 Not tainted 6.12.0-rc7-syzkaller #0
Hardware name: ARM-Versatile Express
Call trace: 
[<8199d4f8>] (dump_backtrace) from [<8199d5f4>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257)
 r7:00000000 r6:82622f44 r5:00000000 r4:8203df84
[<8199d5dc>] (show_stack) from [<819bbac0>] (__dump_stack lib/dump_stack.c:94 [inline])
[<8199d5dc>] (show_stack) from [<819bbac0>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:120)
[<819bba6c>] (dump_stack_lvl) from [<819bbb00>] (dump_stack+0x18/0x1c lib/dump_stack.c:129)
 r5:00000000 r4:82870d18
[<819bbae8>] (dump_stack) from [<8199e120>] (panic+0x120/0x374 kernel/panic.c:354)
[<8199e000>] (panic) from [<80242118>] (check_panic_on_warn kernel/panic.c:243 [inline])
[<8199e000>] (panic) from [<80242118>] (get_taint+0x0/0x1c kernel/panic.c:238)
 r3:8260c5c4 r2:00000001 r1:82026358 r0:8202ddc0
 r7:8048cc80
[<802420a4>] (check_panic_on_warn) from [<8024227c>] (__warn+0x80/0x188 kernel/panic.c:748)
[<802421fc>] (__warn) from [<802424fc>] (warn_slowpath_fmt+0x178/0x1f4 kernel/panic.c:775)
 r8:00000009 r7:82055a7c r6:dfa95d24 r5:84404800 r4:00000000
[<80242388>] (warn_slowpath_fmt) from [<8048cc80>] (kunmap_local_indexed+0x20c/0x224 mm/highmem.c:622)
 r10:ffefdfe8 r9:83f13600 r8:20000000 r7:fffffff0 r6:00000003 r5:84404800
 r4:ffefd000
[<8048ca74>] (kunmap_local_indexed) from [<80506a74>] (__kunmap_local include/linux/highmem-internal.h:94 [inline])
[<8048ca74>] (kunmap_local_indexed) from [<80506a74>] (move_pages_pte mm/userfaultfd.c:1329 [inline])
[<8048ca74>] (kunmap_local_indexed) from [<80506a74>] (move_pages+0x7e8/0x149c mm/userfaultfd.c:1730)
 r7:fffffff0 r6:fce3c75f r5:def89070 r4:ffefb000
[<8050628c>] (move_pages) from [<80582f38>] (userfaultfd_move fs/userfaultfd.c:1899 [inline])
[<8050628c>] (move_pages) from [<80582f38>] (userfaultfd_ioctl+0x111c/0x2080 fs/userfaultfd.c:2022)
 r10:83f13600 r9:dfa95e98 r8:00000001 r7:21000000 r6:00000000 r5:20000040
 r4:845d4000
[<80581e1c>] (userfaultfd_ioctl) from [<80530784>] (vfs_ioctl fs/ioctl.c:51 [inline])
[<80581e1c>] (userfaultfd_ioctl) from [<80530784>] (__do_sys_ioctl fs/ioctl.c:907 [inline])
[<80581e1c>] (userfaultfd_ioctl) from [<80530784>] (sys_ioctl+0x134/0xd98 fs/ioctl.c:893)
 r10:84404800 r9:84569d80 r8:00000004 r7:20000040 r6:84569d81 r5:00000000
 r4:c028aa05
[<80530650>] (sys_ioctl) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:67)
Exception stack(0xdfa95fa8 to 0xdfa95ff0)
5fa0:                   00000000 00000000 00000004 c028aa05 20000040 00000000
5fc0: 00000000 00000000 002862f0 00000036 00000000 00006364 003d0f00 76b5c0bc
5fe0: 76b5bec0 76b5beb0 00018af0 00133450
 r10:00000036 r9:84404800 r8:8020029c r7:00000036 r6:002862f0 r5:00000000
 r4:00000000
Rebooting in 86400 seconds..