tree 763f0f4fbe1a9db3b025c37c801a3d9701c86d49
parent 6dd83548f4193f8bfd7983240471db0d0c7af626
author Nickolai Zeldovich <nickolai@csail.mit.edu> 1357677931 -0500
committer Theodore Ts'o <tytso@mit.edu> 1357695746 -0500

e2fsck: avoid memory corruption on ext2fs_open2 failure

In try_open_fs(), if ext2fs_open2() returns an error, do not try to
access the struct ext2_filesys.  The previous check 'if (ret_fs)' was
always true, but even 'if (*ret_fs)' might be incorrect in some cases,
so check 'retval==0' instead.

Signed-off-by: Nickolai Zeldovich <nickolai@csail.mit.edu>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>