From: Akira Fujita <a-fujita@rs.jp.nec.com>
Date: Thu, 4 Mar 2010 05:34:58 +0000 (-0500)
Subject: ext4: Fix the NULL reference in double_down_write_data_sem()
X-Git-Tag: v2.6.34-rc1~199^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7247c0caa23d94a1cb6b307edba9dc45fb0798d4;p=pandora-kernel.git

ext4: Fix the NULL reference in double_down_write_data_sem()

If EXT4_IOC_MOVE_EXT ioctl is called with NULL donor_fd, fget() in
ext4_ioctl() gets inappropriate file structure for donor; so we need
to do this check earlier, before calling double_down_write_data_sem().

Signed-off-by: Akira Fujita <a-fujita@rs.jp.nec.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
---

Reading git-diff-tree failed