lkml.org 
[lkml]   [2019]   [Sep]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 4.14 10/40] cxgb4: fix a memory leak bug
Date
[ Upstream commit c554336efa9bbc28d6ec14efbee3c7d63c61a34f ]

In blocked_fl_write(), 't' is not deallocated if bitmap_parse_user() fails,
leading to a memory leak bug. To fix this issue, free t before returning
the error.

Signed-off-by: Wenwen Wang <wenwen@cs.uga.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
index 76540b0e082d3..9e5cd18e7358c 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
@@ -2777,8 +2777,10 @@ static ssize_t blocked_fl_write(struct file *filp, const char __user *ubuf,
return -ENOMEM;

err = bitmap_parse_user(ubuf, count, t, adap->sge.egr_sz);
- if (err)
+ if (err) {
+ kvfree(t);
return err;
+ }

bitmap_copy(adap->sge.blocked_fl, t, adap->sge.egr_sz);
kvfree(t);
--
2.20.1


\
 
 \ /
  Last update: 2019-09-08 14:59    [W:0.201 / U:0.880 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site