uvm_fault(0xffffffff839367d8, 0xffff8000296f2004, 0, 1) -> d
kernel: page fault trap, code=0
Stopped at      ufs_lookup+0x5e1:       movzwl  0x4(%r15,%rbx,1),%r14d
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
*433471  19291      0           0  0x4000000    0K syz-executor
ufs_lookup() at ufs_lookup+0x5e1 sys/ufs/ufs/ufs_lookup.c:279
VOP_LOOKUP(fffffd80697461d8,ffff80002a490a68,ffff80002a490a98) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
vfs_lookup(ffff80002a490a38) at vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566
namei(ffff80002a490a38) at namei+0x7aa sys/kern/vfs_lookup.c:250
dorenameat(ffff80003c4f34a8,ffffff9c,200000000080,ffffff9c,200000000540) at dorenameat+0x91 sys/kern/vfs_syscalls.c:2994
syscall(ffff80002a490c30) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a490c30) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x309f70b7080, count: 8
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