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| author | Juerg Haefliger <juerg.haefliger@canonical.com> | 2017-10-04 04:24:41 -0400 |
|---|---|---|
| committer | Dave Kleikamp <dave.kleikamp@oracle.com> | 2017-11-02 09:46:50 -0500 |
| commit | 88a96fa84186deadb8b1ecc8cb066cd7afeb5bf2 (patch) | |
| tree | 3f428e5c755c7d0743e7117d1538709a3426ec06 /fs/jfs | |
| parent | 04d73f86e35d41410ec55242b90330ec23dfe2b0 (diff) | |
| download | lwn-88a96fa84186deadb8b1ecc8cb066cd7afeb5bf2.tar.gz lwn-88a96fa84186deadb8b1ecc8cb066cd7afeb5bf2.zip | |
jfs: Add missing NULL pointer check in __get_metapage
alloc_metapage can return a NULL pointer so check for that.
Signed-off-by: Juerg Haefliger <juerg.haefliger@canonical.com>
Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>
Diffstat (limited to 'fs/jfs')
| -rw-r--r-- | fs/jfs/jfs_metapage.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/jfs/jfs_metapage.c b/fs/jfs/jfs_metapage.c index 1c4b9ad4d7ab..1a3b0cc22ad3 100644 --- a/fs/jfs/jfs_metapage.c +++ b/fs/jfs/jfs_metapage.c @@ -663,6 +663,8 @@ struct metapage *__get_metapage(struct inode *inode, unsigned long lblock, } else { INCREMENT(mpStat.pagealloc); mp = alloc_metapage(GFP_NOFS); + if (!mp) + goto unlock; mp->page = page; mp->sb = inode->i_sb; mp->flag = 0; |