[Bug 1280867] Re: nautilus segfaults in compare_by_display_name()

[Launchpad Bug Tracker]

This bug was fixed in the package nautilus - 1:3.14.2-0ubuntu14

---
nautilus (1:3.14.2-0ubuntu14) xenial; urgency=medium

  * debian/patches/ubuntu_revert_no_wallpaper.patch:
- update to listen to scale factor changes (lp: #1480217)

 -- Lars Uebernickel   Mon, 02 Nov 2015
14:22:11 +

** Changed in: nautilus (Ubuntu)
   Status: Fix Committed => Fix Released

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Title:
  nautilus segfaults in compare_by_display_name()

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[Bug 1280867] Re: nautilus segfaults in compare_by_display_name()

[Mathew Hodson]

** Package changed: nautilus (Fedora) => ubuntu-translations

** Changed in: ubuntu-translations
   Importance: Unknown => Undecided

** Changed in: ubuntu-translations
   Status: Unknown => New

** Changed in: ubuntu-translations
 Remote watch: Red Hat Bugzilla #1043185 => None

** No longer affects: ubuntu-translations

** Changed in: nautilus (Ubuntu)
   Status: In Progress => Fix Committed

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Title:
  nautilus segfaults in compare_by_display_name()

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[Bug 1280867] Re: nautilus segfaults in compare_by_display_name()

[Launchpad Bug Tracker]

This bug was fixed in the package nautilus - 1:3.10.1-0ubuntu9.10

---
nautilus (1:3.10.1-0ubuntu9.10) trusty; urgency=medium

  * debian/patches/0001-Respect-gtk-dialogs-use-header-for-all-dialogs.patch:
Fix a function to not return NULL, as its callers didn't always handle
this and sometimes would crash. For example there was a case where samba
would give us empty display names if a share name overflowed the maximum
length allowed, and this tripped us up and crashed nautilus. (LP:
#1280867)

 -- Iain Lane   Thu, 22 Oct 2015 11:23:04 +0100

** Changed in: nautilus (Ubuntu Trusty)
   Status: Fix Committed => Fix Released

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Title:
  nautilus segfaults in compare_by_display_name()

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[Bug 1280867] Re: nautilus segfaults in compare_by_display_name()

[Launchpad Bug Tracker]

This bug was fixed in the package nautilus - 1:3.14.2-0ubuntu13

---
nautilus (1:3.14.2-0ubuntu13) wily; urgency=medium

  * debian/patches/0001-Respect-gtk-dialogs-use-header-for-all-dialogs.patch:
Fix a function to not return NULL, as its callers didn't always handle
this and sometimes would crash. For example there was a case where samba
would give us empty display names if a share name overflowed the maximum
length allowed, and this tripped us up and crashed nautilus. (LP:
#1280867)

 -- Iain Lane   Thu, 22 Oct 2015 11:03:27
+0100

** Changed in: nautilus (Ubuntu Wily)
   Status: Fix Committed => Fix Released

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Title:
  nautilus segfaults in compare_by_display_name()

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[Bug 1280867] Re: nautilus segfaults in compare_by_display_name()

[Chris J Arges]

Is there a fix for Vivid available/necessary as well?

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[Bug 1280867] Re: nautilus segfaults in compare_by_display_name()

[Iain Lane]

That bug is not caused by this

** Tags removed: verification-failed verification-needed
** Tags added: verification-done

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  nautilus segfaults in compare_by_display_name()

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[Bug 1280867] Re: nautilus segfaults in compare_by_display_name()

[Iain Lane]

I didn't reproduce this again since I made the fix, but I checked e.u.c
and there don't appear to be any regressions caused by this bug. I want
to clear the way for another SRU, so v-done.

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  nautilus segfaults in compare_by_display_name()

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[Bug 1280867] Re: nautilus segfaults in compare_by_display_name()

[Treviño]

** Tags removed: rls-w-incoming
** Tags added: rls-x-incoming

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Title:
  nautilus segfaults in compare_by_display_name()

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[Bug 1280867] Re: nautilus segfaults in compare_by_display_name()

[Chris J Arges]

Hello 14...@mail.ru, or anyone else affected,

Accepted nautilus into trusty-proposed. The package will build now and
be available at
https://launchpad.net/ubuntu/+source/nautilus/1:3.10.1-0ubuntu9.10 in a
few hours, and then in the -proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to
enable and use -proposed.  Your feedback will aid us getting this update
out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, and change the tag
from verification-needed to verification-done. If it does not fix the
bug for you, please add a comment stating that, and change the tag to
verification-failed.  In either case, details of your testing will help
us make a better decision.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance!

** Changed in: nautilus (Ubuntu Wily)
   Status: In Progress => Fix Committed

** Changed in: nautilus (Ubuntu Trusty)
   Status: In Progress => Fix Committed

** Tags added: verification-needed

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Title:
  nautilus segfaults in compare_by_display_name()

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[Bug 1280867] Re: nautilus segfaults in compare_by_display_name()

[Mathew Hodson]

** Bug watch removed: Samba Bugzilla #10896
   https://bugzilla.samba.org/show_bug.cgi?id=10896

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[Bug 1280867] Re: nautilus segfaults in compare_by_display_name()

[Iain Lane]

** Changed in: nautilus (Ubuntu Trusty)
   Status: New => Triaged

** Changed in: nautilus (Ubuntu Trusty)
   Importance: Undecided => High

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  nautilus segfaults in compare_by_display_name()

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[Bug 1280867] Re: nautilus segfaults in compare_by_display_name()

[Iain Lane]

I uploaded this to wily and trusty, please test when asked - we had some
trouble reproducing reliably.

** Description changed:

+ [ Description ]
+ 
+ If a samba share has an empty name, nautilus will crash when you browse
+ to the listing of shares.
+ 
+ [ QA ]
+ 
+ - Be on a setup (or create one) where you tickle 
https://bugzilla.samba.org/show_bug.cgi?id=10896
+ - Open nautilus, hit ctrl-l, browse to smb://workgroups
+ - Nautilus crashes (or doesn't crash with the fix)
+ 
+ [ Fix ]
+ 
+ Fix nautilus_file_peek_display_name () to not return NULL ever, as some of its
+ callers weren't prepared to handle this.
+ 
+ [ Regression potential ]
+ 
+ Should only change crashes to non-crashes, but maybe a caller I missed
+ handled NULL properly and now will behave weirdly. I grepped the source
+ and didn't find one, though.
+ 
+ [ Original release ]
+ 
  samba, Ubuntu 14.04 (alpha)
  
  ProblemType: Crash
  DistroRelease: Ubuntu 14.04
  Package: nautilus 1:3.10.1-0ubuntu4
  ProcVersionSignature: Ubuntu 3.13.0-8.28-generic 3.13.2
  Uname: Linux 3.13.0-8-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.13.2-0ubuntu4
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Sun Feb 16 22:44:08 2014
  ExecutablePath: /usr/bin/nautilus
  GsettingsChanges: b'org.gnome.nautilus.list-view' b'default-column-order' 
b"['name', 'size', 'type', 'date_modified', 'date_accessed', 'owner', 'group', 
'permissions', 'mime_type', 'where']"
  InstallationDate: Installed on 2014-02-15 (1 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140214)
  ProcCmdline: nautilus -n
  SegvAnalysis:
-  Segfault happened at: 0x4bef0a:  movzbl (%r12),%ecx
-  PC (0x004bef0a) ok
-  source "(%r12)" (0x) not located in a known VMA region (needed 
readable region)!
-  destination "%ecx" ok
+  Segfault happened at: 0x4bef0a:  movzbl (%r12),%ecx
+  PC (0x004bef0a) ok
+  source "(%r12)" (0x) not located in a known VMA region (needed 
readable region)!
+  destination "%ecx" ok
  SegvReason: reading NULL VMA
  Signal: 11
  SourcePackage: nautilus
  StacktraceTop:
-  ?? ()
-  ?? ()
-  ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
-  ?? ()
-  ?? ()
+  ?? ()
+  ?? ()
+  ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
+  ?? ()
+  ?? ()
  Title: nautilus crashed with SIGSEGV
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

** Changed in: nautilus (Ubuntu Trusty)
   Status: Triaged => In Progress

** Changed in: nautilus (Ubuntu Wily)
   Status: Triaged => In Progress

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  nautilus segfaults in compare_by_display_name()

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[Bug 1280867] Re: nautilus segfaults in compare_by_display_name()

[Iain Lane]

** Also affects: nautilus (Ubuntu Wily)
   Importance: High
   Status: Triaged

** Also affects: nautilus (Ubuntu Trusty)
   Importance: Undecided
   Status: New

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[Bug 1280867] Re: nautilus segfaults in compare_by_display_name()

[Launchpad Bug Tracker]

** Branch linked: lp:~ubuntu-desktop/nautilus/ubuntu

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  nautilus segfaults in compare_by_display_name()

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[Bug 1280867] Re: nautilus segfaults in compare_by_display_name()

[Bug Watch Updater]

** Changed in: nautilus
   Status: Confirmed => Fix Released

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  nautilus segfaults in compare_by_display_name()

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[Bug 1280867] Re: nautilus segfaults in compare_by_display_name()

[Sebastien Bacher]

** Tags added: rls-w-incoming

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  nautilus segfaults in compare_by_display_name()

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[Bug 1280867] Re: nautilus segfaults in compare_by_display_name()

[Sebastien Bacher]

The empty name seems to be a samba bug resolve upstream, see
https://bugzilla.samba.org/show_bug.cgi?id=10896

** Bug watch added: Samba Bugzilla #10896
   https://bugzilla.samba.org/show_bug.cgi?id=10896

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[Bug 1280867] Re: nautilus segfaults in compare_by_display_name()

[Sebastien Bacher]

@Doug, thanks, that's an useful comment. That function indeed seems to
not handle null cases correctly, the upstream GNOME bug seems to
indicator a similar case

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  nautilus segfaults in compare_by_display_name()

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[Bug 1280867] Re: nautilus segfaults in compare_by_display_name()

[Doug Brown]

I'm also running into a segfault in compare_by_display_name(). A little
more info on a use case that can cause the issue:

I'm trying to browse the Windows network in nautilus. I go to
Places-Network and go into the Windows Network directory. All the
workgroups on the local network appear, and I try to enter one of them.
At this point nautilus hangs for a while and/or crashes in
compare_by_display_name().

If I run smbtree -N in the terminal, I see a bunch of servers and
clients in the offending workgroup. Normal Ubuntu clients (not set up
for serving) tend to appear as well. If one of the Ubuntu clients has a
hostname that is too long to be automatically converted to a NetBIOS
name, it shows up in the smbtree -N output with a blank NetBIOS name.
Example:

\\  really-long-name-of-computer server (Samba,
Ubuntu)

This blank name is what causes this bug in nautilus. If I go into the
offending machines and give them a custom short NetBIOS name in
/etc/samba/smb.conf, and restart nmbd on them, the problem goes away and
I can browse the Windows network just fine. Perhaps
compare_by_display_name() is not handling a NULL or empty string
correctly? Either way, it looks like nmbd is auto-generating an empty
name, so I would argue that it has a bug that is indirectly causing this
bug at the same time.

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[Bug 1280867] Re: nautilus segfaults in compare_by_display_name()

[Bug Watch Updater]

** Changed in: nautilus
   Status: New = Confirmed

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[Bug 1280867] Re: nautilus segfaults in compare_by_display_name()

[Apport retracing service]

** Tags added: utopic

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[Bug 1280867] Re: nautilus segfaults in compare_by_display_name()

[Bug Watch Updater]

** Changed in: nautilus
   Status: Unknown = New

** Changed in: nautilus
   Importance: Unknown = Critical

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