------------[ cut here ]------------
WARNING: CPU: 0 PID: 6776 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: 6776 Comm: syz.1.515 Not tainted 6.11.0-rc5-syzkaller #0
Hardware name: ARM-Versatile Express
Call trace: 
[<81955840>] (dump_backtrace) from [<8195593c>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257)
 r7:00000000 r6:826228c4 r5:00000000 r4:8200beac
[<81955924>] (show_stack) from [<81973620>] (__dump_stack lib/dump_stack.c:93 [inline])
[<81955924>] (show_stack) from [<81973620>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:119)
[<819735cc>] (dump_stack_lvl) from [<81973660>] (dump_stack+0x18/0x1c lib/dump_stack.c:128)
 r5:00000000 r4:8286bd18
[<81973648>] (dump_stack) from [<819563e4>] (panic+0x120/0x368 kernel/panic.c:354)
[<819562c4>] (panic) from [<802421d4>] (check_panic_on_warn kernel/panic.c:243 [inline])
[<819562c4>] (panic) from [<802421d4>] (get_taint+0x0/0x1c kernel/panic.c:238)
 r3:8260c5c4 r2:00000001 r1:81ff46d0 r0:81ffc4a8
 r7:804817b0
[<80242160>] (check_panic_on_warn) from [<80242328>] (__warn+0x7c/0x180 kernel/panic.c:741)
[<802422ac>] (__warn) from [<802425a4>] (warn_slowpath_fmt+0x178/0x1f4 kernel/panic.c:766)
 r8:00000009 r7:820239e0 r6:df885d14 r5:84130c00 r4:00000000
[<80242430>] (warn_slowpath_fmt) from [<804817b0>] (kunmap_local_indexed+0x20c/0x224 mm/highmem.c:622)
 r10:ffefd0a8 r9:83f4ad00 r8:20508000 r7:fffffffe r6:00000003 r5:84130c00
 r4:ffefd000
[<804815a4>] (kunmap_local_indexed) from [<804f1590>] (__kunmap_local include/linux/highmem-internal.h:94 [inline])
[<804815a4>] (kunmap_local_indexed) from [<804f1590>] (move_pages_pte mm/userfaultfd.c:1326 [inline])
[<804815a4>] (kunmap_local_indexed) from [<804f1590>] (move_pages+0x7e8/0x14a0 mm/userfaultfd.c:1727)
 r7:fffffffe r6:00000000 r5:8539f810 r4:ffefb840
[<804f0da8>] (move_pages) from [<8056c574>] (userfaultfd_move fs/userfaultfd.c:2016 [inline])
[<804f0da8>] (move_pages) from [<8056c574>] (userfaultfd_ioctl+0x1260/0x2314 fs/userfaultfd.c:2139)
 r10:20c16000 r9:df885e98 r8:20000080 r7:83f4ad00 r6:00000001 r5:00000000
 r4:84437000
[<8056b314>] (userfaultfd_ioctl) from [<8051a474>] (vfs_ioctl fs/ioctl.c:51 [inline])
[<8056b314>] (userfaultfd_ioctl) from [<8051a474>] (do_vfs_ioctl fs/ioctl.c:861 [inline])
[<8056b314>] (userfaultfd_ioctl) from [<8051a474>] (__do_sys_ioctl fs/ioctl.c:905 [inline])
[<8056b314>] (userfaultfd_ioctl) from [<8051a474>] (sys_ioctl+0x134/0xda4 fs/ioctl.c:893)
 r10:84130c00 r9:00000004 r8:84968b40 r7:20000080 r6:84968b41 r5:00000000
 r4:c028aa05
[<8051a340>] (sys_ioctl) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:67)
Exception stack(0xdf885fa8 to 0xdf885ff0)
5fa0:                   00000000 00000000 00000004 c028aa05 20000080 00000000
5fc0: 00000000 00000000 002762f0 00000036 00000000 00006364 003d0f00 76b4f0bc
5fe0: 76b4eec0 76b4eeb0 000189f0 00132dc0
 r10:00000036 r9:84130c00 r8:8020029c r7:00000036 r6:002762f0 r5:00000000
 r4:00000000
Rebooting in 86400 seconds..