1172154 - Crash in pt_PostNotifyToCvar while stability testing

Status: RESOLVED WORKSFORME

(Core :: IPC, defect)

Description

[Greg Grisco]

Saw this crash a couple of times on AU 170.  cafbot will upload minidump and logs.

[@ pt_PostNotifyToCvar | PR_NotifyCondVar | WaitPidDaemonThread | _pt_root | __pthread_start | __start_thread ]

Comment 1

[cafbot (PoC: ggrisco)]

Attachment: EXTRA file attachment -

Comment 2

[cafbot (PoC: ggrisco)]

Attachment: decoded minidump -

Comment 3

[cafbot (PoC: ggrisco)]

Observed on: 

Device: msm8909
Gonk Version: AU_LINUX_GECKO_LF.BR.1.2.3.00.00.00.000.170
Moz BuildID: 20150519002500
Manifest: https://www.codeaurora.org/cgit/quic/lf/b2g/manifest/tree/caf_AU_LINUX_GECKO_LF.BR.1.2.3.00.00.00.000.170.xml?h=release
B2G Version: v2.2
Gecko Version: 37.0
Gaia:  http://git.mozilla.org/?p=releases/gaia.git;a=commit;h=732acec6f37d13ccea6b0ddc48904a53a2970894
Gecko: http://git.mozilla.org/?p=releases/gecko.git;a=commit;h=197cb3859f55ca587256c76648adec54a1f502ef
Patches: bug 1133147, bug 1167799, bug 1162663

Comment 4

[cafbot (PoC: ggrisco)]

Attachment: EXTRA file attachment - AU_LINUX_GECKO_LF.BR.1.2.3.00.00.00.000.170

Comment 5

[cafbot (PoC: ggrisco)]

Attachment: decoded minidump - AU_LINUX_GECKO_LF.BR.1.2.3.00.00.00.000.170

Comment 6

[Josh Cheng [:josh]]

Hi Bobby,
Can you help to find someone who can help?
Thanks!

Comment 7

[Bobby Chien]

As mini dump in comment 2, can't find any specific gecko signature in callstack. We need more test case information for investigation.

Comment 8

[Greg Grisco]

(In reply to Bobby Chien [:bchien] from comment #7)
> As mini dump in comment 2, can't find any specific gecko signature in
> callstack. We need more test case information for investigation.

It looks like the top of the callstack is here, no?

http://git.mozilla.org/?p=releases/gecko.git;a=blob;f=nsprpub/pr/src/pthreads/ptsynch.c;h=03c5720ea638e587295d05c305447968682554b4;hb=HEAD#l284

Comment 9

[Bobby Chien]

Cervantes, could you help to comment this?

Comment 10

[Cervantes Yu [:cyu] [:cervantes]]

(In reply to Greg Grisco from comment #8)
> (In reply to Bobby Chien [:bchien] from comment #7)
> > As mini dump in comment 2, can't find any specific gecko signature in
> > callstack. We need more test case information for investigation.
> 
> It looks like the top of the callstack is here, no?
> 
> http://git.mozilla.org/?p=releases/gecko.git;a=blob;f=nsprpub/pr/src/
> pthreads/ptsynch.c;h=03c5720ea638e587295d05c305447968682554b4;hb=HEAD#l284

Yes. And this looks like a crash in using PR_CreateProcess() or PR_CreateProcessDetached() and for some unknown reason the WaitPidDaemonThread dereferences dereferences NULL in notifying the thread that creates the process.

Comment 11

[Cervantes Yu [:cyu] [:cervantes]]

I would suggest adding instrumentation to see what process the device was launching to cause this crash.

Comment 12

[cafbot (PoC: ggrisco)]

"Closing issue which has not been seen since 05/27/15 18:45"