820880 - Firefox hangs in FUTEX_WAIT_PRIVATE

Status: UNCONFIRMED

(Firefox :: File Handling, defect)

Description

[Nelson A. de Oliveira]

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:19.0) Gecko/20121207 Firefox/19.0 Iceweasel/19.0a2
Build ID: 20121207042017

Steps to reproduce:

Normal web navigation sometimes makes Firefox hangs.


Actual results:

Firefox hangs almost daily, at least since May/June.
Strace shows that it's stopped at:

futex(0x7ff98752db0c, FUTEX_WAIT_PRIVATE, 1, NULL

Monster "thread apply all bt full" output from gdb is available at
http://people.debian.org/~naoliv/misc/gdb-firefox.txt (I don't know if it's usefull however)


Expected results:

Don't hang.

I don't know if it's related with (or is the same of) #505146, #570316, and #594301 (so sorry if it's duplicated)

Comment 1

[Josh Matthews [:jdm]]

The monster dump is very valuable, thank you. The interesting thread here is #1, which is waiting as part of GetHandlerAndDescriptionFromMailcapFile (http://mxr.mozilla.org/mozilla-central/source/uriloader/exthandler/unix/nsOSHelperAppService.cpp#932) to launch a process as part of the mailcap file, and apparently the process doesn't terminate. I suggest you investigate the contents of this file.

Comment 2

[Josh Matthews [:jdm]]

Given that the command being run is apparently "test -n \"$DISPLAY\"", this result surprises me, however.

Comment 3

[Nelson A. de Oliveira]

Attachment: mailcap file

At least taking a look at the mailcap file (from /etc/mailcap) I couldn't find anything suspicious.

Is there anything else that I can do to help, please?