[ 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 20455d082cb80..61c55621b9589 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c +++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c @@ -2781,8 +2781,10 @@ 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); t4_free_mem(t);