tree c4ac98779c0981228d1f02044dc5cfaa31d8b949
parent 8af78a66b255b80c5ffd2c6ce3bb7f2f48ec4437
author Dominique Martinet <dominique.martinet@cea.fr> 1535350325 +0900
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1543653858 +0100

v9fs_dir_readdir: fix double-free on p9stat_read error

commit 81c99089bce693b94b775b6eb888115d2d540086 upstream.

p9stat_read will call p9stat_free on error, we should only free the
struct content on success.

There also is no need to "p9stat_init" st as the read function will
zero the whole struct for us anyway, so clean up the code a bit while
we are here.

Link: http://lkml.kernel.org/r/1535410108-20650-1-git-send-email-asmadeus@codewreck.org
Signed-off-by: Dominique Martinet <dominique.martinet@cea.fr>
Reported-by: syzbot+d4252148d198410b864f@syzkaller.appspotmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>