8Qjk5clLrZMjB78MtU19GAhP+hTPdEVXJL/X/oXD9OzzxU6PwAAAAAAAAAArIWhP5VdvzfyA24PqGrTkn4hX+73gaXr861l1+drZW9tZfcdAAAAAIDtwskMRE3btpJ/WeS/yq/Hdv694smt3x+8v3PlMS1tNRPtH3KJrbBff1B87dkS0ygtZH71abXBNev8TlksPq3Ldqrm57f8mJO9H1+sup26X47PcsY2/q4EAAAAYCMsfuhvk2z4VTrbc+xepecEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMB2s4a/HJt4WK6l+WLn03KtSu8jAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAADASn4EAAD//xAR0Ao=")
recvfrom$inet_nvme(r7, &(0x7f0000000280)=""/225, 0xe1, 0x0, &(0x7f0000000380)=@l2={0x1f, 0x0, @any, 0xcc}, 0x80)
panic: replaceArg: group fields don't match: 0/1

goroutine 30 [running]:
github.com/google/syzkaller/prog.replaceArg({0xe56770?, 0xc02e65b900?}, {0xe56770?, 0xc02e8734e0?})
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/prog.go:377 +0x425
github.com/google/syzkaller/prog.replaceArg({0xe56770?, 0xc02e65b920?}, {0xe56770?, 0xc02e8734c0?})
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/prog.go:382 +0x345
github.com/google/syzkaller/prog.replaceArg({0xe56770?, 0xc02e65b940?}, {0xe56770?, 0xc02e8734a0?})
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/prog.go:382 +0x345
github.com/google/syzkaller/prog.replaceArg({0xe56770?, 0xc02e65be00?}, {0xe56770?, 0xc02e873220?})
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/prog.go:382 +0x345
github.com/google/syzkaller/prog.replaceArg({0xe56770?, 0xc02e65be20?}, {0xe56770?, 0xc02e873140?})
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/prog.go:382 +0x345
github.com/google/syzkaller/prog.replaceArg({0xe56770?, 0xc02e65be40?}, {0xe56770?, 0xc02e873120?})
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/prog.go:382 +0x345
github.com/google/syzkaller/prog.replaceArg({0xe56770?, 0xc02e65be60?}, {0xe56770?, 0xc02e873100?})
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/prog.go:382 +0x345
github.com/google/syzkaller/prog.replaceArg({0xe56770?, 0xc02e65be80?}, {0xe56770?, 0xc02e8730e0?})
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/prog.go:382 +0x345
github.com/google/syzkaller/prog.replaceArg({0xe56770?, 0xc02e65bea0?}, {0xe56770?, 0xc02e8730c0?})
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/prog.go:382 +0x345
github.com/google/syzkaller/prog.replaceArg({0xe56770?, 0xc02e65bec0?}, {0xe56770?, 0xc02e8730a0?})
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/prog.go:382 +0x345
github.com/google/syzkaller/prog.replaceArg({0xe56770?, 0xc02e65bee0?}, {0xe56770?, 0xc02e873080?})
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/prog.go:382 +0x345
github.com/google/syzkaller/prog.(*StructType).mutate(0x16d44a0, 0xc02e65b5a0, 0xc02e700500, {0xe56770, 0xc02e65bf00?}, {0xc02e700008, {0x1db72e0, 0x4, 0x4}, 0xc02e8082d0, ...})
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/mutation.go:490 +0x185
github.com/google/syzkaller/prog.(*Target).mutateArg(0x0?, 0x7f49c13575b8?, 0x30?, {0xe56770, 0xc02e65bf00}, {0xc02e700008, {0x1db72e0, 0x4, 0x4}, 0xc02e8082d0, ...}, ...)
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/mutation.go:245 +0xe2
github.com/google/syzkaller/prog.(*mutator).mutateArg(0xc0007ddd60)
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/mutation.go:196 +0x245
github.com/google/syzkaller/prog.(*Prog).Mutate(0xc02e67dc00, {0xe52aa8?, 0xc02761a060}, 0x1e, 0xc0210a8040, 0xc00007ee70, {0xc0185f4000, 0x10179, 0x11000})
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/mutation.go:51 +0x2ba
main.(*Proc).smashInput(0xc0210a8280, 0xc0266ae050)
	/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/proc.go:221 +0x165
main.(*Proc).loop(0xc0210a8280)
	/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/proc.go:78 +0xf2
created by main.main in goroutine 1
	/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/fuzzer.go:336 +0x1665