syz_open_dev$hidraw(0x0, 0x0, 0x0)
ioctl$HIDIOCGFEATURE(0xffffffffffffffff, 0xc0404807, 0x0)
syz_usb_connect_ath9k(0x3, 0x5a, &(0x7f0000000f00)={{0x12, 0x1, 0x200, 0xff, 0xff, 0xff, 0x40, 0xcf3, 0x9271, 0x108, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x48}}]}}, 0x0)
panic: replaceArg: group fields don't match: 0/10

goroutine 25 [running]:
github.com/google/syzkaller/prog.replaceArg({0xe56770?, 0xc000a01820?}, {0xe56770?, 0xc000a01cc0?})
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/prog.go:377 +0x425
github.com/google/syzkaller/prog.replaceArg({0xe56770?, 0xc000a017e0?}, {0xe56770?, 0xc000a01c80?})
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/prog.go:382 +0x345
github.com/google/syzkaller/prog.replaceArg({0xe56770?, 0xc000a017c0?}, {0xe56770?, 0xc000a01c60?})
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/prog.go:382 +0x345
github.com/google/syzkaller/prog.replaceArg({0xe56770?, 0xc000a017a0?}, {0xe56770?, 0xc000a01c40?})
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/prog.go:382 +0x345
github.com/google/syzkaller/prog.replaceArg({0xe56770?, 0xc000a01780?}, {0xe56770?, 0xc000a01c20?})
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/prog.go:382 +0x345
github.com/google/syzkaller/prog.replaceArg({0xe56770?, 0xc000a01760?}, {0xe56770?, 0xc000a01c00?})
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/prog.go:382 +0x345
github.com/google/syzkaller/prog.replaceArg({0xe56770?, 0xc000a01740?}, {0xe56770?, 0xc000a01be0?})
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/prog.go:382 +0x345
github.com/google/syzkaller/prog.replaceArg({0xe56770?, 0xc000a01720?}, {0xe56770?, 0xc000a01bc0?})
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/prog.go:382 +0x345
github.com/google/syzkaller/prog.(*StructType).mutate(0x16d44a0, 0xc000a018c0, 0xc00c175090, {0xe56770, 0xc000a01700?}, {0xc00c174e68, {0x1db72e0, 0x4, 0x4}, 0xc00c202f60, ...})
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/mutation.go:490 +0x185
github.com/google/syzkaller/prog.(*Target).mutateArg(0x0?, 0x7f5a8028b108?, 0x60?, {0xe56770, 0xc000a01700}, {0xc00c174e68, {0x1db72e0, 0x4, 0x4}, 0xc00c202f60, ...}, ...)
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/mutation.go:245 +0xe2
github.com/google/syzkaller/prog.(*mutator).mutateArg(0xc00bc57e48)
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/mutation.go:196 +0x245
github.com/google/syzkaller/prog.(*Prog).Mutate(0xc00c17d780, {0xe52aa8?, 0xc0010f6210}, 0x1e, 0xc0010ca880, 0xc000113dd0, {0xc00013e000, 0x53b, 0x700})
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/mutation.go:51 +0x2ba
main.(*Proc).loop(0xc0010cab00)
	/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