linux-kernel - [PATCH] nconfig: prevent segfault on empty menu

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Date:	Sun, 10 Jul 2011 04:04:47 +0200
From:	Andrej Gelenberg <andrej.gelenberg@....edu>
To:	linux-kernel@...r.kernel.org, linux-kbuild@...r.kernel.org
Subject: [PATCH] nconfig: prevent segfault on empty menu

Hello,

i found and fixed an NULL-dereference bug in nconf tool.

How to reproduce:
1. $ make nconfig
2. disable "Kernel hacking -> Debug Filesystem"
3. go to "General setup -> GCOV-based kernel profiling" and hit F2
it should segfault

Fix: i have added some checks for "struct menu*" to be NULL before it
get dereferenced

Regards,
Andrej Gelenberg

View attachment "0001-nconfig-prevent-segfault-on-empty-menu.patch" of type "text/plain" (1883 bytes)