panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x28 pc=0x7733fe]

goroutine 28 [running]:
github.com/google/syzkaller/prog.clone(0x9b1ec0, 0xc000e9b800, 0xc00281be38, 0xc0028fe9c0, 0xc00105a540)
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/clone.go:71 +0x6ee
github.com/google/syzkaller/prog.(*Prog).Clone(0xc000d81040, 0xc0020f1da0)
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/clone.go:20 +0x319
main.(*Proc).loop(0xc0022ab340)
	/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/proc.go:94 +0x3ca
created by main.main
	/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/fuzzer.go:258 +0x1155
g
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