bio_alloc() can return NULL, so add NULL test to prevent NULL pointer dereference.
Signed-off-by: Axel Lin <[email protected]> --- block/blk-flush.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/block/blk-flush.c b/block/blk-flush.c index 20badd7..4706641 100644 --- a/block/blk-flush.c +++ b/block/blk-flush.c @@ -470,6 +470,9 @@ int blkdev_issue_flush(struct block_device *bdev, gfp_t gfp_mask, return -ENXIO; bio = bio_alloc(gfp_mask, 0); + if (!bio) + return -ENOMEM; + bio->bi_bdev = bdev; ret = submit_bio_wait(WRITE_FLUSH, bio); -- 2.1.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in Please read the FAQ at http://www.tux.org/lkml/
