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| author | Nikolay Borisov <kernel@kyup.com> | 2016-03-03 10:54:57 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-04-12 09:08:56 -0700 |
| commit | 6b3ae95f03d9ff3877549e601c88f7650e3ada29 (patch) | |
| tree | d747756de7892c28827026bd68f0506d109eb17f | |
| parent | f3c5b82c36e98876ab507d3bc062100eecaba158 (diff) | |
| download | linux-stable-6b3ae95f03d9ff3877549e601c88f7650e3ada29.tar.gz linux-stable-6b3ae95f03d9ff3877549e601c88f7650e3ada29.tar.bz2 linux-stable-6b3ae95f03d9ff3877549e601c88f7650e3ada29.zip | |
quota: Fix possible GPF due to uninitialised pointers
commit ab73ef46398e2c0159f3a71de834586422d2a44a upstream.
When dqget() in __dquot_initialize() fails e.g. due to IO error,
__dquot_initialize() will pass an array of uninitialized pointers to
dqput_all() and thus can lead to deference of random data. Fix the
problem by properly initializing the array.
Signed-off-by: Nikolay Borisov <kernel@kyup.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | fs/quota/dquot.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c index ef0d64b2a6d9..353ff31dcee1 100644 --- a/fs/quota/dquot.c +++ b/fs/quota/dquot.c @@ -1398,7 +1398,7 @@ static int dquot_active(const struct inode *inode) static int __dquot_initialize(struct inode *inode, int type) { int cnt, init_needed = 0; - struct dquot **dquots, *got[MAXQUOTAS]; + struct dquot **dquots, *got[MAXQUOTAS] = {}; struct super_block *sb = inode->i_sb; qsize_t rsv; int ret = 0; @@ -1415,7 +1415,6 @@ static int __dquot_initialize(struct inode *inode, int type) int rc; struct dquot *dquot; - got[cnt] = NULL; if (type != -1 && cnt != type) continue; /* |