This patch adds the error handling in case of any memory allocation
failure for io_end_vec. This was missing in original
patch series which enables dioread_nolock for blocksize < pagesize.
Fixes: c8cc88163f40 ("ext4: Add support for blocksize < pagesize in dioread_nolock")
Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Signed-off-by: Ritesh Harjani <riteshh@xxxxxxxxxxxxx>
---
fs/ext4/inode.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 381813205f99..de70f19bfa7e 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -2240,6 +2240,10 @@ static int mpage_process_page(struct mpage_da_data *mpd, struct page *page,
err = 0;
if (!err && mpd->map.m_len && mpd->map.m_lblk > lblk) {
io_end_vec = ext4_alloc_io_end_vec(io_end);
+ if (IS_ERR(io_end_vec)) {
+ err = PTR_ERR(io_end_vec);
+ goto out;
+ }
io_end_vec->offset = mpd->map.m_lblk << blkbits;
}
*map_bh = true;
@@ -2405,8 +2409,11 @@ static int mpage_map_and_submit_extent(handle_t *handle,
loff_t disksize;
int progress = 0;
ext4_io_end_t *io_end = mpd->io_submit.io_end;
- struct ext4_io_end_vec *io_end_vec = ext4_alloc_io_end_vec(io_end);
+ struct ext4_io_end_vec *io_end_vec;
+ io_end_vec = ext4_alloc_io_end_vec(io_end);
+ if (IS_ERR(io_end_vec))
+ return PTR_ERR(io_end_vec);
io_end_vec->offset = ((loff_t)map->m_lblk) << inode->i_blkbits;
do {
err = mpage_map_one_extent(handle, mpd);
--
2.21.0
