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| author | Gustavo A. R. Silva <gustavoars@kernel.org> | 2020-09-02 10:07:50 -0500 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2020-09-02 20:31:50 +0200 |
| commit | 1d6fd78a213ee3874f46bdce083b7a41d208886d (patch) | |
| tree | 91a4955f728ef00a3f56a33f3d92234658e29bf7 /net/xdp/xsk_buff_pool.c | |
| parent | 968be23ceaca1f402dfad0a30a8da4649ee32940 (diff) | |
| download | lwn-1d6fd78a213ee3874f46bdce083b7a41d208886d.tar.gz lwn-1d6fd78a213ee3874f46bdce083b7a41d208886d.zip | |
xsk: Fix null check on error return path
Currently, dma_map is being checked, when the right object identifier
to be null-checked is dma_map->dma_pages, instead.
Fix this by null-checking dma_map->dma_pages.
Fixes: 921b68692abb ("xsk: Enable sharing of dma mappings")
Addresses-Coverity-ID: 1496811 ("Logically dead code")
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Björn Töpel <bjorn.topel@intel.com>
Link: https://lore.kernel.org/bpf/20200902150750.GA7257@embeddedor
Diffstat (limited to 'net/xdp/xsk_buff_pool.c')
| -rw-r--r-- | net/xdp/xsk_buff_pool.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/xdp/xsk_buff_pool.c b/net/xdp/xsk_buff_pool.c index 795d7c81c0ca..5b00bc5707f2 100644 --- a/net/xdp/xsk_buff_pool.c +++ b/net/xdp/xsk_buff_pool.c @@ -287,7 +287,7 @@ static struct xsk_dma_map *xp_create_dma_map(struct device *dev, struct net_devi return NULL; dma_map->dma_pages = kvcalloc(nr_pages, sizeof(*dma_map->dma_pages), GFP_KERNEL); - if (!dma_map) { + if (!dma_map->dma_pages) { kfree(dma_map); return NULL; } |