unknown record kind 112

[bmizerany]

I'm getting:

# dumptohprof heapdump leak heap.hprof
2014/07/20 11:27:34 unknown record kind 112

Here is my env:

# uname -a
Linux myserver 3.13.0-24-generic #47-Ubuntu SMP Fri May 2 23:30:00 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
# go version
go version go1.3 linux/amd64

The heapdump and binary are here: http://cl.ly/2w3e2D3O3g35

Let me know if you need anything else.

[bmizerany]

I changed:

https://github.com/randall77/hprof/blob/master/read/parser.go#L739

to a Println and ran dumptohprof again. Here was the result:

2014/07/20 19:18:21 unknown record kind  112
2014/07/20 19:18:21 unknown record kind  116
2014/07/20 19:18:21 unknown record kind  29
panic: runtime error: invalid memory address or nil pointer dereference
[signal 0xb code=0x1 addr=0x0 pc=0x6ef7e]

goroutine 16 [running]:
runtime.panic(0x18bf60, 0x29af64)
    /usr/local/go/src/pkg/runtime/panic.c:279 +0xf5
github.com/randall77/hprof/read.nameWithDwarf(0x208310240, 0x7fff5fbffb95, 0x4)
    /Users/bmizerany/src/github.com/randall77/hprof/read/parser.go:1372 +0xf5e
github.com/randall77/hprof/read.Read(0x7fff5fbffb8c, 0x8, 0x7fff5fbffb95, 0x4, 0x1)
    /Users/bmizerany/src/github.com/randall77/hprof/read/parser.go:1607 +0x5e
main.main()
    /Users/bmizerany/src/github.com/randall77/hprof/dumptohprof/main.go:108 +0xbe1

goroutine 19 [finalizer wait]:
runtime.park(0x29520, 0x29eed0, 0x29e289)
    /usr/local/go/src/pkg/runtime/proc.c:1369 +0x89
runtime.parkunlock(0x29eed0, 0x29e289)
    /usr/local/go/src/pkg/runtime/proc.c:1385 +0x3b
runfinq()
    /usr/local/go/src/pkg/runtime/mgc0.c:2644 +0xcf
runtime.goexit()
    /usr/local/go/src/pkg/runtime/proc.c:1445

Maybe this will help.

[randall77]

I get no error when running on these files. Are you sure you're using the code with the latest fix?

[bmizerany]

I'm up-to-date. Very strange.

$ cd randall77/hprof
$ git rev-parse HEAD
6bfdcb9bcc31abd90e2bba0c77009465ce705a4e
$ go install ./...
$ cd dumptohprof/
$ go build 
$ md5sum dumptohprof $(which dumptohprof)
13ee245f664a2a44745a5a40b3a46c24    dumptohprof
13ee245f664a2a44745a5a40b3a46c24    /Users/bmizerany/bin/dumptohprof
$ cd coreos/etcd
/Users/bmizerany/src/github.com/coreos/etcd/etcd
$ dumptohprof heapdump leak leak.hprof
parser.go:739: unknown record kind  112
parser.go:739: unknown record kind  116
parser.go:739: unknown record kind  29
panic: runtime error: invalid memory address or nil pointer dereference
[signal 0xb code=0x1 addr=0x0 pc=0x7073d]

goroutine 16 [running]:
runtime.panic(0x18bfc0, 0x29bf64)
    /usr/local/go/src/pkg/runtime/panic.c:279 +0xf5
github.com/randall77/hprof/read.link(0x208312240)
    /Users/bmizerany/src/github.com/randall77/hprof/read/parser.go:1447 +0xedd
github.com/randall77/hprof/read.Read(0x7fff5fbffb8c, 0x8, 0x7fff5fbffb95, 0x4, 0x1)
    /Users/bmizerany/src/github.com/randall77/hprof/read/parser.go:1615 +0x7a
main.main()
    /Users/bmizerany/src/github.com/randall77/hprof/dumptohprof/main.go:112 +0xbe1

goroutine 19 [finalizer wait]:
runtime.park(0x29550, 0x29fed0, 0x29f289)
    /usr/local/go/src/pkg/runtime/proc.c:1369 +0x89
runtime.parkunlock(0x29fed0, 0x29f289)
    /usr/local/go/src/pkg/runtime/proc.c:1385 +0x3b
runfinq()
    /usr/local/go/src/pkg/runtime/mgc0.c:2644 +0xcf
runtime.goexit()
    /usr/local/go/src/pkg/runtime/proc.c:1445
$ 

[bmizerany]

Maybe your local repo is more up-to-date than here?

[bmizerany]

The above md5sum was for the patched log.Println version. I've updated to a clean origin/master. I still get the same error as above.

Here is the md5sum I show:

$ md5sum dumptohprof/dumptohprof $(which dumptohprof)
610c2bfe1839d20b166d87dd79726f2b    dumptohprof/dumptohprof
610c2bfe1839d20b166d87dd79726f2b    /Users/bmizerany/bin/dumptohprof

[randall77]

Looks like this dump is missing the continpc field. Undo my last patch and you should be able to read it. Any chance this was built with a release candidate instead of 1.3 final?

On Sun, Jul 20, 2014 at 11:53 PM, Blake Mizerany notifications@github.com wrote:

The above md5sum was for the patched log.Println version. I've updated to a clean origin/master. I still get the same error as above.

Here is the md5sum I show:

$ md5sum dumptohprof/dumptohprof $(which dumptohprof) 610c2bfe1839d20b166d87dd79726f2b dumptohprof/dumptohprof 610c2bfe1839d20b166d87dd79726f2b /Users/bmizerany/bin/dumptohprof

— Reply to this email directly or view it on GitHub https://github.com/randall77/hprof/issues/3#issuecomment-49576079.

[bmizerany]

Doesn't look like it:

# go version
go version go1.3 linux/amd64
# logout
Connection to myserver.com closed.
$ go version
go version go1.3 darwin/amd64

Both my linux and darwin builds show a 1.3 stable release.

[bmizerany]

I think I got this working awhile ago.