uvm_fault(0xffffffff82a30160, 0xffff80001584f004, 0, 1) -> d
kernel: page fault trap, code=0
Stopped at      ufs_lookup+0x4ce:       movzwl  0x4(%r15,%r13,1),%ebx
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
*458482  17329      0           0  0x4000000    0  syz-executor.6
ufs_lookup() at ufs_lookup+0x4ce sys/ufs/ufs/ufs_lookup.c:281
VOP_LOOKUP(fffffd8065b392d8,ffff800022ec95f8,ffff800022ec9628) at VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85
vfs_lookup(ffff800022ec95c8) at vfs_lookup+0x6cc sys/kern/vfs_lookup.c:561
namei(ffff800022ec95c8) at namei+0x36a sys/kern/vfs_lookup.c:245
vn_open(ffff800022ec95c8,60f,0) at vn_open+0x188 sys/kern/vfs_vnops.c:113
doopenat(ffff80002167cd28,ffffff9c,20000080,60e,0,ffff800022ec97b0) at doopenat+0x26a sys/kern/vfs_syscalls.c:1131
syscall(ffff800022ec9820) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xa9f941c9c60, count: 7
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