syz_mount_image$ext4(&(0x7f0000000300)='ext4\x00', &(0x7f0000000380)='./file0\x00', 0x7f, 0x1, &(0x7f0000000540)=[{&(0x7f00000003c0)="68d86b9e1b3e420fc7b4f2c5a0ed221fe17bd7763317fa9f72fb7108c84ccaaf6b9e9fb90ffc3516c838fe7bd13f2eff657c1c738699e408852b20973e45b7ae8584ffd1f61a53e857113fa3a7c8610f0b80ddab05fac6c6aafd982f2a738cc7306edbc4ba646eb5d2e9c884328af21989b3a94f9e08d8f63f45ee7fe380", 0x7e, 0x1}], 0x8022, 0x0, 0x0) (async)
panic: bad group arg size 24, should be <= 0 for &prog.GroupArg{ArgCommon:prog.ArgCommon{ref:0x2de, dir:0x0}, Inner:[]prog.Arg{}} type "array"

goroutine 14 [running]:
github.com/google/syzkaller/prog.foreachArgImpl({0x8b4158, 0xc010b49c60}, 0xc010d5e940, 0xc000b61d00)
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/analysis.go:157 +0x5d9
github.com/google/syzkaller/prog.foreachArgImpl({0x8b4198, 0xc010d6e810}, 0xc010d5e940, 0xc000b61d00)
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/analysis.go:164 +0x337
github.com/google/syzkaller/prog.ForeachArg(0xc010b8fdb0, 0x0)
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/analysis.go:123 +0x105
github.com/google/syzkaller/prog.(*Prog).MutateWithHints(0xc013a202c0, 0x0, 0xc010d544b0, 0xc000b61d80)
	/syzkaller/gopath/src/github.com/google/syzkaller/prog/hints.go:78 +0xaa
main.(*Proc).executeHintSeed(0xc013a202c0, 0xc000b61dd8, 0x0)
	/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/proc.go:248 +0xd2
main.(*Proc).smashInput(0xc013a202c0, 0xc00e09dd60)
	/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/proc.go:214 +0x88
main.(*Proc).loop(0xc013a202c0)
	/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/proc.go:78 +0x125
created by main.main
	/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/fuzzer.go:307 +0x15a5