r8 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f00000001c0)='memory.events\x00', 0x7a05, 0x1700) r9 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000580)='memory.events\x00', 0x100002, 0x0) write$cgroup_type(r9, &(0x7f0000000180), 0x40001) write$cgroup_subtree(r8, 0x0, 0xda00) unexpected fault address 0x0 fatal error: fault [signal panic during panic SIGBUS: bus error PC=0x4727d5 m=6 sigcode=128 goroutine 0 [idle]: runtime.write1() /usr/local/go/src/runtime/sys_linux_amd64.s:99 +0x15 fp=0xc00088fe50 sp=0xc00088fe48 pc=0x4727d5 runtime.write(0xc03d34?, 0x8?, 0x8?) /usr/local/go/src/runtime/time_nofake.go:31 +0x31 fp=0xc00088fe80 sp=0xc00088fe50 pc=0x45cf51 runtime.writeErr(...) /usr/local/go/src/runtime/write_err.go:12 runtime.gwrite({0xc03d34, 0x8, 0xe67b30?}) /usr/local/go/src/runtime/print.go:97 +0xef fp=0xc00088feb8 sp=0xc00088fe80 pc=0x43ce8f runtime.printstring({0xc03d34?, 0xbfa6c9?}) /usr/local/go/src/runtime/print.go:246 +0x54 fp=0xc00088ff08 sp=0xc00088feb8 pc=0x43d5b4 runtime.dopanic_m(0xc00092ad00, 0x43b28f?, 0xbfa6c9?) /usr/local/go/src/runtime/panic.go:1294 +0x78 fp=0xc00088ff88 sp=0xc00088ff08 pc=0x43b978 runtime.fatalthrow.func1() /usr/local/go/src/runtime/panic.go:1170 +0x6b fp=0xc00088ffc8 sp=0xc00088ff88 pc=0x43b5cb traceback: unexpected SPWRITE function runtime.systemstack runtime.systemstack() /usr/local/go/src/runtime/asm_amd64.s:509 +0x4a fp=0xc00088ffd8 sp=0xc00088ffc8 pc=0x46f20a goroutine 16 [running]: runtime.systemstack_switch() /usr/local/go/src/runtime/asm_amd64.s:474 +0x8 fp=0xc0004d74c8 sp=0xc0004d74b8 pc=0x46f1a8 runtime.fatalthrow(0x4d7510?) /usr/local/go/src/runtime/panic.go:1163 +0x65 fp=0xc0004d7508 sp=0xc0004d74c8 pc=0x43b525 runtime.throw({0xbfa6c9?, 0x94628981fc0e4f89?}) /usr/local/go/src/runtime/panic.go:1077 +0x5c fp=0xc0004d7538 sp=0xc0004d7508 pc=0x43b21c runtime.sigpanic() /usr/local/go/src/runtime/signal_unix.go:858 +0x116 fp=0xc0004d7598 sp=0xc0004d7538 pc=0x451f36 compress/flate.(*compressor).findMatch(0xc000a4e000?, 0xe911?, 0x66ca5e?, 0x66d8ac?, 0xc000472200?) /usr/local/go/src/compress/flate/deflate.go:251 +0x3b fp=0xc0004d7600 sp=0xc0004d7598 pc=0x66991b compress/flate.(*compressor).deflate(0xc000a4e000) /usr/local/go/src/compress/flate/deflate.go:436 +0x19e fp=0xc0004d7670 sp=0xc0004d7600 pc=0x66a15e compress/flate.(*compressor).write(0xc000a4e000, {0xc0018c8fe7?, 0x1768d, 0xc0014b3f78?}) /usr/local/go/src/compress/flate/deflate.go:544 +0x72 fp=0xc0004d76b8 sp=0xc0004d7670 pc=0x66aad2 compress/flate.(*Writer).Write(...) /usr/local/go/src/compress/flate/deflate.go:710 github.com/google/syzkaller/pkg/rpctype.(*flateConn).Write(0xc00063f980, {0xc0018c8fe7?, 0xc0?, 0x199?}) /syzkaller/gopath/src/github.com/google/syzkaller/pkg/rpctype/rpc.go:153 +0x26 fp=0xc0004d76f0 sp=0xc0004d76b8 pc=0xa31246 bufio.(*Writer).Write(0xc000868c40, {0xc0018c8005?, 0xc00062a950?, 0xc0004d7818?}) /usr/local/go/src/bufio/bufio.go:682 +0xea fp=0xc0004d7750 sp=0xc0004d76f0 pc=0x65a9ea encoding/gob.(*Encoder).writeMessage(0xc00062a8c0, {0xead280, 0xc000868c40}, 0xc00062a8f8) /usr/local/go/src/encoding/gob/encoder.go:82 +0x3b1 fp=0xc0004d7828 sp=0xc0004d7750 pc=0x9a8871 encoding/gob.(*Encoder).EncodeValue(0xc00062a8c0, {0xa83260?, 0xc0014b3f40?, 0x0?}) /usr/local/go/src/encoding/gob/encoder.go:253 +0x448 fp=0xc0004d78e8 sp=0xc0004d7828 pc=0x9a97c8 encoding/gob.(*Encoder).Encode(0xb7bb39fef3fe091a?, {0xa83260?, 0xc0014b3f40?}) /usr/local/go/src/encoding/gob/encoder.go:176 +0x69 fp=0xc0004d7928 sp=0xc0004d78e8 pc=0x9a91c9 net/rpc.(*gobClientCodec).WriteRequest(0xc00063fa70, 0xc00063faa0?, {0xa83260, 0xc0014b3f40}) /usr/local/go/src/net/rpc/client.go:221 +0x53 fp=0xc0004d7950 sp=0xc0004d7928 pc=0x9b34b3 net/rpc.(*Client).send(0xc000090c60, 0xc0014b7860) /usr/local/go/src/net/rpc/client.go:91 +0x224 fp=0xc0004d79d0 sp=0xc0004d7950 pc=0x9b2564 net/rpc.(*Client).Go(0x7f21cdb4b1a8?, {0xc4a8e4, 0x14}, {0xa83260?, 0xc0014b3f40}, {0xa831e0?, 0xc0014b7810}, 0xc000942420) /usr/local/go/src/net/rpc/client.go:315 +0x185 fp=0xc0004d7a28 sp=0xc0004d79d0 pc=0x9b37a5 net/rpc.(*Client).Call(...) /usr/local/go/src/net/rpc/client.go:321 github.com/google/syzkaller/pkg/rpctype.(*RPCClient).Call(0x0?, {0xc4a8e4, 0x14}, {0xa83260, 0xc0014b3f40}, {0xa831e0, 0xc0014b7810}) /syzkaller/gopath/src/github.com/google/syzkaller/pkg/rpctype/rpc.go:114 +0x16a fp=0xc0004d7ad8 sp=0xc0004d7a28 pc=0xa30e4a main.(*FuzzerTool).exchangeDataCall(0xc0000d50a0, 0x1, {0xc0004d7f78, 0x1, 0xb2e460Connection to 10.128.0.97 closed by remote host.