uvm_fault(0xffffffff83504770, 0xffff8000127c2004, 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
 441932  74654      0           0          0    1  syz-executor
*428099  50571      0         0x2          0    0  syz-executor
ufs_lookup() at ufs_lookup+0x5e1 sys/ufs/ufs/ufs_lookup.c:279
VOP_LOOKUP(fffffd807670c530,ffff80002a135ef8,ffff80002a135f28) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
vfs_lookup(ffff80002a135ec8) at vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566
namei(ffff80002a135ec8) at namei+0x7aa sys/kern/vfs_lookup.c:250
dounlinkat(ffff8000371de7c0,ffffff9c,709caa4237f0,8) at dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1852
syscall(ffff80002a1360a0) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
syscall(ffff80002a1360a0) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x709caa4237e0, count: 8
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