[Bugme-janitors] [Bug 9567] New: NULL pointer dereference on file
drivers/video/w100fb.c
bugme-daemon at bugzilla.kernel.org
bugme-daemon at bugzilla.kernel.org
Fri Dec 14 15:38:20 PST 2007
http://bugzilla.kernel.org/show_bug.cgi?id=9567
Summary: NULL pointer dereference on file drivers/video/w100fb.c
Product: Drivers
Version: 2.5
KernelVersion: 2.6.23
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Video(Other)
AssignedTo: drivers_video-other at kernel-bugs.osdl.org
ReportedBy: marciobuss at gmail.com
On file /drivers/video/w100fb.c there is a null pointer dereference.
There are many paths to the error. One example path is as follows:
(1) The condition at line 643 is true
(2) the statement "goto out" at line 644 is then executed, making
the program to jump to line 767
(3) the expression fb_dealloc_cmap(&info->cmap) takes place with a
null pointer "info".
Another path, which makes the error even more apparent, is:
(1) The condition at line 671, "if (!info)" is true
(2) the statement "goto out" at line 673 is executed
(3) the program jumps to line 767, and the same error occurs.
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