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cxgb4: fix a memory leak bug

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[ Upstream commit c554336efa ]

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>
This commit is contained in:
Wenwen Wang
2019-08-13 04:18:52 -05:00
committed by Greg Kroah-Hartman
parent 91910cc001
commit 8762d3ea41
1 changed files with 3 additions and 1 deletions
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4
drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
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@@ -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);