chdir(&(0x7f00000001c0)='./bus\x00')
write$cgroup_pid(r6, &(0x7f0000000380), 0x12)
sched_setscheduler(r0, 0x1, 0x0)
setsockopt$IPT_SO_SET_REPLACE(0xffffffffffffffff, 0x4000000000000, 0x40, 0x0, 0x0)
lchown(&(0x7f00000002c0)='./bus/file0\x00', 0x0, 0x0)
panic: replaceArg: group fields don't match: 0/11

goroutine 11 [running]:
github.com/google/syzkaller/prog.replaceArg({0xe56770?, 0xc0205c4ce0?}, {0xe56770?, 0xc0205c4f00?})
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/prog.go:377 +0x425
github.com/google/syzkaller/prog.replaceArg({0xe56770?, 0xc0205c4ca0?}, {0xe56770?, 0xc0205c4ea0?})
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/prog.go:382 +0x345
github.com/google/syzkaller/prog.replaceArg({0xe56770?, 0xc0205c4c80?}, {0xe56770?, 0xc0205c4e80?})
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/prog.go:382 +0x345
github.com/google/syzkaller/prog.replaceArg({0xe56770?, 0xc0205c4c60?}, {0xe56770?, 0xc0205c4e40?})
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/prog.go:382 +0x345
github.com/google/syzkaller/prog.replaceArg({0xe56770?, 0xc0205c4c40?}, {0xe56770?, 0xc0205c4e20?})
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/prog.go:382 +0x345
github.com/google/syzkaller/prog.replaceArg({0xe56770?, 0xc0205c4c20?}, {0xe56770?, 0xc0205c4dc0?})
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/prog.go:382 +0x345
github.com/google/syzkaller/prog.replaceArg({0xe56770?, 0xc0205c4c00?}, {0xe56770?, 0xc0205c4da0?})
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/prog.go:382 +0x345
github.com/google/syzkaller/prog.replaceArg({0xe56770?, 0xc0205c4be0?}, {0xe56770?, 0xc0205c4d60?})
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/prog.go:382 +0x345
github.com/google/syzkaller/prog.(*StructType).mutate(0x16d44a0, 0xc0205c4d20, 0xc013816b90, {0xe56770, 0xc0205c4bc0?}, {0xc013816aa8, {0x1db72e0, 0x4, 0x4}, 0xc0144d0780, ...})
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/mutation.go:490 +0x185
github.com/google/syzkaller/prog.(*Target).mutateArg(0x418408?, 0xc0140769e0?, 0xc002007dc8?, {0xe56770, 0xc0205c4bc0}, {0xc013816aa8, {0x1db72e0, 0x4, 0x4}, 0xc0144d0780, ...}, ...)
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/mutation.go:245 +0xe2
github.com/google/syzkaller/prog.(*mutator).mutateArg(0xc002007e48)
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/mutation.go:196 +0x245
github.com/google/syzkaller/prog.(*Prog).Mutate(0xc0252226c0, {0xe52aa8?, 0xc02af2dec0}, 0x1e, 0xc022adc000, 0xc0000a3f80, {0xc01d1fe000, 0xf6fe, 0x11000})
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/mutation.go:51 +0x2ba
main.(*Proc).loop(0xc022adc140)
	/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