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authorColin Ian King <colin.king@canonical.com>2018-01-22 09:38:57 +0000
committerJon Mason <jdmason@kudzu.us>2018-01-28 22:17:24 -0500
commit2e2bc5a9a300261853303c006b7c29faafc64221 (patch)
tree8fd676caf858363541e4d64130bda58c9faa0047 /drivers/ntb
parent1536dc063e82090c5da65ddd94b1da1b38bfab43 (diff)
NTB: ntb_tool: fix memory leak on 'buf' on error exit path
Currently there is a memory leak on buf when the call to ntb_mw_get_align fails. Add an exit err label and jump to this so that kfree on buf frees the memory. Detected by CoverityScan, CID#1464286 ("Resource leak") Fixes: d637628ce00c ("NTB: ntb_tool: Add full multi-port NTB API support") Signed-off-by: Colin Ian King <colin.king@canonical.com> Acked-by: Serge Semin <fancer.lancer@gmail.com> Signed-off-by: Jon Mason <jdmason@kudzu.us>
Diffstat (limited to 'drivers/ntb')
-rw-r--r--drivers/ntb/test/ntb_tool.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/ntb/test/ntb_tool.c b/drivers/ntb/test/ntb_tool.c
index 920fc9b161b0..d592c0ffbd19 100644
--- a/drivers/ntb/test/ntb_tool.c
+++ b/drivers/ntb/test/ntb_tool.c
@@ -659,7 +659,7 @@ static ssize_t tool_mw_trans_read(struct file *filep, char __user *ubuf,
ret = ntb_mw_get_align(inmw->tc->ntb, inmw->pidx, inmw->widx,
&addr_align, &size_align, &size_max);
if (ret)
- return ret;
+ goto err;
off += scnprintf(buf + off, buf_size - off,
"Inbound MW \t%d\n",
@@ -694,6 +694,8 @@ static ssize_t tool_mw_trans_read(struct file *filep, char __user *ubuf,
&size_max);
ret = simple_read_from_buffer(ubuf, size, offp, buf, off);
+
+err:
kfree(buf);
return ret;