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authorTheodore Ts'o <tytso@mit.edu>2013-06-06 10:18:22 -0400
committerTheodore Ts'o <tytso@mit.edu>2013-06-06 10:18:22 -0400
commita1d8d9a757cd46e044a3f6061c315eda14bf697e (patch)
tree1f8cda247a0f1e0f6eb8346da151e64b5d46e0ed
parent5dc23bdd5f846ef868e82f789dfd9b13093f9ba6 (diff)
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ext4: add check to io_submit_init_bio
The bio_alloc() function can return NULL if the memory allocation fails. So we need to check for this. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
-rw-r--r--fs/ext4/page-io.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/ext4/page-io.c b/fs/ext4/page-io.c
index ce8c15a..48786cd 100644
--- a/fs/ext4/page-io.c
+++ b/fs/ext4/page-io.c
@@ -372,6 +372,8 @@ static int io_submit_init_bio(struct ext4_io_submit *io,
struct bio *bio;
bio = bio_alloc(GFP_NOIO, min(nvecs, BIO_MAX_PAGES));
+ if (!bio)
+ return -ENOMEM;
bio->bi_sector = bh->b_blocknr * (bh->b_size >> 9);
bio->bi_bdev = bh->b_bdev;
bio->bi_end_io = ext4_end_bio;
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