&(0x7f0000000180)={&(0x7f0000000040)={0x10, 0x0, 0x0, 0x2000000}, 0xc, &(0x7f0000000140)={&(0x7f0000000080)={0x30, 0x0, 0x20, 0x70bd2a, 0x25dfdbfb, {}, [@NL802154_ATTR_ACKREQ_DEFAULT={0x5, 0x1a, 0x1}, @NL802154_ATTR_WPAN_DEV={0xc}, @NL802154_ATTR_IFINDEX={0x8}]}, 0x30}, 0x1, 0x0, 0x0, 0x4008090}, 0x0) (async)
sendmsg$NLBL_CIPSOV4_C_REMOVE(r0, &(0x7f0000000100)={&(0x7f0000000000), 0xc, &(0x7f00000000c0)={&(0x7f00000005c0)={0x1c, 0x0, 0x0, 0x0, 0x0, {}, [@NLBL_CIPSOV4_A_DOI={0x8}]}, 0x1c}}, 0x48000) (async)
panic: replaceArg: group fields don't match: 0/1

goroutine 10 [running]:
github.com/google/syzkaller/prog.replaceArg({0xe56770?, 0xc024482f00?}, {0xe56770?, 0xc024483160?})
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/prog.go:377 +0x425
github.com/google/syzkaller/prog.replaceArg({0xe56770?, 0xc024482e80?}, {0xe56770?, 0xc0244830e0?})
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/prog.go:382 +0x345
github.com/google/syzkaller/prog.replaceArg({0xe56770?, 0xc024482e00?}, {0xe56770?, 0xc024483060?})
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/prog.go:382 +0x345
github.com/google/syzkaller/prog.replaceArg({0xe56770?, 0xc024482de0?}, {0xe56770?, 0xc024483040?})
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/prog.go:382 +0x345
github.com/google/syzkaller/prog.replaceArg({0xe56770?, 0xc024482dc0?}, {0xe56770?, 0xc024483020?})
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/prog.go:382 +0x345
github.com/google/syzkaller/prog.replaceArg({0xe56770?, 0xc024482da0?}, {0xe56770?, 0xc024483000?})
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/prog.go:382 +0x345
github.com/google/syzkaller/prog.replaceArg({0xe56770?, 0xc024482d80?}, {0xe56770?, 0xc024482fe0?})
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/prog.go:382 +0x345
github.com/google/syzkaller/prog.replaceArg({0xe56770?, 0xc024482d60?}, {0xe56770?, 0xc024482fc0?})
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/prog.go:382 +0x345
github.com/google/syzkaller/prog.replaceArg({0xe56770?, 0xc024482d40?}, {0xe56770?, 0xc024482fa0?})
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/prog.go:382 +0x345
github.com/google/syzkaller/prog.(*StructType).mutate(0x16d4620, 0xc024482f60, 0xc024478aa0, {0xe56770, 0xc024482d20?}, {0xc024478a58, {0x1db7580, 0x4, 0x4}, 0xc0260c5680, ...})
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/mutation.go:490 +0x185
github.com/google/syzkaller/prog.(*Target).mutateArg(0x418408?, 0xc0260c21e0?, 0xc003a57dc8?, {0xe56770, 0xc024482d20}, {0xc024478a58, {0x1db7580, 0x4, 0x4}, 0xc0260c5680, ...}, ...)
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/mutation.go:245 +0xe2
github.com/google/syzkaller/prog.(*mutator).mutateArg(0xc003a57e48)
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/mutation.go:196 +0x245
github.com/google/syzkaller/prog.(*Prog).Mutate(0xc0260d25c0, {0xe52aa8?, 0xc0266e0030}, 0x1e, 0xc0275ca000, 0xc000088ea0, {0xc021dfc000, 0xf54a, 0x11000})
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/mutation.go:51 +0x2ba
main.(*Proc).loop(0xc0275ca140)
	/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/proc.go:95 +0x365
created by main.main in goroutine 1
	/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/fuzzer.go:336 +0x1665