From a1d8d9a757cd46e044a3f6061c315eda14bf697e Mon Sep 17 00:00:00 2001 From: Theodore Ts'o Date: Thu, 6 Jun 2013 10:18:22 -0400 Subject: [PATCH] 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" --- fs/ext4/page-io.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/ext4/page-io.c b/fs/ext4/page-io.c index ce8c15a7eabc..48786cdb5e6c 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; -- 2.20.1