pcmanfm crashed with SIGSEGV in malloc_consolidate()

[Eliah Kagan]

On a Lubuntu Oneiric amd64 system with pcmanfm 0.9.9-0ubuntu1 (libfm0/libfm-gtk0 0.1.15+git-3625952cea-0ubuntu1), pcmanfm crashed. I am unsure how to reproduce this bug, but this is what I did with pcmanfm leading up to the crash:

(1) I navigated to a folder on a network drive mounted with smbmount and opened a .pdf file with the default application (evince).

(2) Several minutes later I opened a separate window, navigated to two separate network drives, and recursively deleted a folder from each one. The recursive delete operations happened at the same time.

(3) I went to check if these operations had finished, but all I saw of pcmanfm was the original window, with nothing in it. I realized pcmanfm had crashed and that Apport was generating a report. The folders were gone when I subsequently checked, so apparently the recursive delete operations had completed.

I don't actually know if any of the above is causally related to this crash--it could be coincidental.

It seems likely, by cursory examination of StacktraceTop entries, that this is a duplicate of bug 861363. Perhaps the automatic retrace will provide enough information to know for sure.

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: pcmanfm 0.9.9-0ubuntu1
ProcVersionSignature: Ubuntu 3.0.0-19.32-generic 3.0.27
Uname: Linux 3.0.0-19-generic x86_64
ApportVersion: 1.23-0ubuntu4
Architecture: amd64
CrashCounter: 1
Date: Thu Apr 19 23:20:33 2012
ExecutablePath: /usr/bin/pcmanfm
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Beta amd64 (20110413.1)
Pref_Config_System_lubuntu:
 [Preferred Applications]
 WebBrowser=firefox.desktop
 MailClient=
ProcCmdline: pcmanfm --desktop --profile lubuntu
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x7f1da7c6b9e6 <malloc_consolidate+198>: mov 0x8(%rbx),%rdx
 PC (0x7f1da7c6b9e6) ok
 source "0x8(%rbx)" (0x00000009) not located in a known VMA region (needed readable region)!
 destination "%rdx" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: pcmanfm
StacktraceTop:
 malloc_consolidate (av=0x7f1da7f8d1c0) at malloc.c:5153
 malloc_consolidate (av=0x7f1da7f8d1c0) at malloc.c:5115
 _int_malloc (av=0x7f1da7f8d1c0, bytes=9216) at malloc.c:4373
 __GI___libc_malloc (bytes=9216) at malloc.c:3660
 g_malloc () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
Title: pcmanfm crashed with SIGSEGV in malloc_consolidate()
UpgradeStatus: Upgraded to oneiric on 2011-09-28 (204 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

[Apport retracing service (apport)]

StacktraceTop:
 malloc_consolidate (av=0x7f1da7f8d1c0) at malloc.c:5153
 malloc_consolidate (av=0x7f1da7f8d1c0) at malloc.c:5115
 _int_malloc (av=0x7f1da7f8d1c0, bytes=9216) at malloc.c:4373
 __GI___libc_malloc (bytes=9216) at malloc.c:3660
 g_malloc (n_bytes=9216) at /build/buildd/glib2.0-2.30.0/./glib/gmem.c:164

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Chris Guiver (guiverc)]

Thank you for reporting this bug to Ubuntu.

Ubuntu 11.10 (oneiric) reached end-of-life on May 9, 2013.

See this document for currently supported Ubuntu releases:
https://wiki.ubuntu.com/Releases

We appreciate that this bug may be old and you might not be interested in discussing it any more. But if you are then please upgrade to the latest Ubuntu version and re-test. If you then find the bug is still present in the newer Ubuntu version, please add a comment here telling us which new version it is in.

[Launchpad Janitor (janitor)]

[Expired for pcmanfm (Ubuntu) because there has been no activity for 60 days.]