------------[ cut here ]------------
WARNING: CPU: 0 PID: 7731 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: 7731 Comm: syz.5.567 Not tainted 6.15.0-rc5-syzkaller #0 PREEMPT 
Hardware name: ARM-Versatile Express
Call trace: 
[<802019e4>] (dump_backtrace) from [<80201ae0>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257)
 r7:00000000 r6:828227fc r5:00000000 r4:82257c34
[<80201ac8>] (show_stack) from [<80220020>] (__dump_stack lib/dump_stack.c:94 [inline])
[<80201ac8>] (show_stack) from [<80220020>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:120)
[<8021ffcc>] (dump_stack_lvl) from [<80220060>] (dump_stack+0x18/0x1c lib/dump_stack.c:129)
 r5:00000000 r4:82a70d4c
[<80220048>] (dump_stack) from [<802025f8>] (panic+0x120/0x374 kernel/panic.c:354)
[<802024d8>] (panic) from [<802619e8>] (check_panic_on_warn kernel/panic.c:243 [inline])
[<802024d8>] (panic) from [<802619e8>] (get_taint+0x0/0x1c kernel/panic.c:238)
 r3:8280c604 r2:00000001 r1:8223e7fc r0:822462fc
 r7:804c6318
[<80261974>] (check_panic_on_warn) from [<80261b4c>] (__warn+0x80/0x188 kernel/panic.c:749)
[<80261acc>] (__warn) from [<80261dcc>] (warn_slowpath_fmt+0x178/0x1f4 kernel/panic.c:776)
 r8:00000009 r7:82271710 r6:dfde1d1c r5:84b5bc00 r4:00000000
[<80261c58>] (warn_slowpath_fmt) from [<804c6318>] (kunmap_local_indexed+0x210/0x228 mm/highmem.c:622)
 r10:00000000 r9:deb9a00c r8:ded0ae94 r7:00a00000 r6:00000003 r5:84b5bc00
 r4:ffefd000
[<804c6108>] (kunmap_local_indexed) from [<8053ffac>] (__kunmap_local include/linux/highmem-internal.h:94 [inline])
[<804c6108>] (kunmap_local_indexed) from [<8053ffac>] (move_pages_pte mm/userfaultfd.c:1420 [inline])
[<804c6108>] (kunmap_local_indexed) from [<8053ffac>] (move_pages+0xb60/0x18d4 mm/userfaultfd.c:1831)
 r7:00a00000 r6:00000000 r5:857af984 r4:851d8300
[<8053f44c>] (move_pages) from [<805c1830>] (userfaultfd_move fs/userfaultfd.c:1898 [inline])
[<8053f44c>] (move_pages) from [<805c1830>] (userfaultfd_ioctl+0xf6c/0x20c0 fs/userfaultfd.c:2021)
 r10:851d8300 r9:dfde1e98 r8:21000000 r7:00000001 r6:00000000 r5:20000040
 r4:842e3080
[<805c08c4>] (userfaultfd_ioctl) from [<8056b530>] (vfs_ioctl fs/ioctl.c:51 [inline])
[<805c08c4>] (userfaultfd_ioctl) from [<8056b530>] (do_vfs_ioctl fs/ioctl.c:860 [inline])
[<805c08c4>] (userfaultfd_ioctl) from [<8056b530>] (__do_sys_ioctl fs/ioctl.c:904 [inline])
[<805c08c4>] (userfaultfd_ioctl) from [<8056b530>] (sys_ioctl+0x138/0xd84 fs/ioctl.c:892)
 r10:84b5bc00 r9:00000007 r8:886e90c0 r7:20000040 r6:886e90c1 r5:00000000
 r4:c028aa05
[<8056b3f8>] (sys_ioctl) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:67)
Exception stack(0xdfde1fa8 to 0xdfde1ff0)
1fa0:                   00000000 00000000 00000007 c028aa05 20000040 00000000
1fc0: 00000000 00000000 002e6300 00000036 002d0000 00000000 00006364 76b4b0bc
1fe0: 76b4aec0 76b4aeb0 0001939c 00131f30
 r10:00000036 r9:84b5bc00 r8:8020029c r7:00000036 r6:002e6300 r5:00000000
 r4:00000000
Rebooting in 86400 seconds..