Bug 3506 - Bad size passed to realloc() in xdg_mime_init_from_directory()
Summary: Bad size passed to realloc() in xdg_mime_init_from_directory()
Status: RESOLVED FIXED
Alias: None
Product: xdgmime
Classification: Unclassified
Component: xdgmime (show other bugs)
Version: unspecified
Hardware: x86 (IA32) All
: high blocker
Assignee: Jonathan Blandford
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Reported: 2005-06-09 20:35 UTC by Daniel Stone
Modified: 2005-06-09 16:42 UTC (History)
0 users

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Description FreeDesktop Bugzilla Database Corruption Fix User 2005-06-09 20:35:24 UTC
xdg_mime_init_from_directory() calls realloc(), but requests a size that is too
small to fit the required number of (XdgMimeCache *).  The attached patch fixes
this.
Comment 1 FreeDesktop Bugzilla Database Corruption Fix User 2005-06-09 20:36:19 UTC
Created attachment 2863 [details]
Test case for XSelectInput problem

2005-05-28  Federico Mena Quintero  <federico@ximian.com>

	* xdgmime.c (xdg_mime_init_from_directory): Pass the correct size
	to realloc().
Comment 2 Jonathan Blandford 2005-06-09 21:04:07 UTC
Fixed, thanks
Comment 3 Christophe Fergeau 2005-06-10 00:16:26 UTC
Out of curiosity, how did you catch it? Were you fixing a specific bug?
Comment 4 FreeDesktop Bugzilla Database Corruption Fix User 2005-06-10 08:17:50 UTC
Uh, I was having spurious crashes in the file chooser within my jhbuild
checkout.  First I thought something else may be broken in my jhbuild tree, but
then I decided to look, as some operations on folders looked reproducible.

I *think* I found it with MALLOC_CHECK_=2 under gdb, but I don't remember --- I
found the bug while half coding, half listening to a Guadec talk :)
Comment 5 Christophe Fergeau 2005-06-10 08:20:43 UTC
ok, I was asking because there are a bunch of bug reports like
http://bugzilla.gnome.org/show_bug.cgi?id=306143 being reported, and I was
wondering if your patch could fix those. Guess I'll have to find someone getting
crashes and willing to test the patch ;)
Comment 6 FreeDesktop Bugzilla Database Corruption Fix User 2005-06-10 09:11:12 UTC
Let me check if the copy of xdgmime within gnome-vfs is okay...
Comment 7 FreeDesktop Bugzilla Database Corruption Fix User 2005-06-10 09:13:14 UTC
Blah, the copy within gnome-vfs-2.10 is not even the one with the MIME cache. 
Or at least, it's different from the copy that is inside GTK+.
Comment 8 FreeDesktop Bugzilla Database Corruption Fix User 2005-06-10 09:42:44 UTC
Just applied the patch to gnome-vfs HEAD.  That one does use the caches.


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