, @multicast2, 0x0, 0x0, 'syzkaller0\x00', 'veth1_to_team\x00'}, 0x0, 0x70, 0xa0}, @TPROXY={0x30, 'TPROXY\x00', 0x0, {0x0, 0x0, @empty}}}, {{@ip={@broadcast, @empty, 0x0, 0x0, 'lo\x00', 'batadv_slave_1\x00'}, 0x0, 0xa0, 0xd0, 0x0, {}, [@common=@unspec=@mac={{0x30}, {@multicast}}]}, @TPROXY={0x30, 'TPROXY\x00', 0x0, {0x0, 0x0, @loopback}}}], {{'\x00', 0x0, 0x70, 0x98}, {0x28}}}}, 0x478) (async)
ioctl$FS_IOC_READ_VERITY_METADATA(r0, 0xc0286687, &(0x7f0000000100)={0x1, 0x48da, 0x3d, &(0x7f00000000c0)=""/61})
panic: replaceArg: group fields don't match: 1/0

goroutine 23 [running]:
github.com/google/syzkaller/prog.replaceArg({0xe56770?, 0xc025e1f640?}, {0xe56770?, 0xc026604260?})
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/prog.go:377 +0x425
github.com/google/syzkaller/prog.replaceArg({0xe56770?, 0xc025e1f600?}, {0xe56770?, 0xc026604220?})
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/prog.go:382 +0x345
github.com/google/syzkaller/prog.replaceArg({0xe56770?, 0xc025e1f5a0?}, {0xe56770?, 0xc026604200?})
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/prog.go:382 +0x345
github.com/google/syzkaller/prog.replaceArg({0xe56770?, 0xc025e1f500?}, {0xe56770?, 0xc0266041c0?})
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/prog.go:382 +0x345
github.com/google/syzkaller/prog.replaceArg({0xe56770?, 0xc025e1f460?}, {0xe56770?, 0xc026604100?})
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/prog.go:382 +0x345
github.com/google/syzkaller/prog.(*StructType).mutate(0x16d44a0, 0xc025e1fb80, 0xc00fd346e0, {0xe56770, 0xc025e1f3c0?}, {0xc00fd34648, {0x1db72e0, 0x4, 0x4}, 0xc021829ef0, ...})
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/mutation.go:490 +0x185
github.com/google/syzkaller/prog.(*Target).mutateArg(0x0?, 0xc01778c180?, 0xc001cdfdc8?, {0xe56770, 0xc025e1f3c0}, {0xc00fd34648, {0x1db72e0, 0x4, 0x4}, 0xc021829ef0, ...}, ...)
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/mutation.go:245 +0xe2
github.com/google/syzkaller/prog.(*mutator).mutateArg(0xc001cdfe48)
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/mutation.go:196 +0x245
github.com/google/syzkaller/prog.(*Prog).Mutate(0xc029289940, {0xe52aa8?, 0xc02766f710}, 0x1e, 0xc02564c040, 0xc000094ff0, {0xc014900000, 0x1098c, 0x11000})
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/mutation.go:51 +0x2ba
main.(*Proc).loop(0xc02564c0c0)
	/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