From a37990851038f5b78f2c8bbb9121e048661a4ce0 Mon Sep 17 00:00:00 2001
From: Wenwen Wang <wenwen@cs.uga.edu>
Date: Tue, 13 Aug 2019 04:18:52 -0500
Subject: [PATCH 32/35] cxgb4: fix a memory leak bug
Git-commit: c554336efa9bbc28d6ec14efbee3c7d63c61a34f
Patch-mainline: v5.3-rc6
References: git-fixes
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: Denis Kirjanov <denis.kirjanov@suse.com>
---
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 0d60c0674c9f..629567f22f46 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
@@ -3235,8 +3235,10 @@ 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);
--
2.16.4