[PATCH 02/16] svcrpc: fix gss krb5i memory leak

[J. Bruce Fields]

From: J. Bruce Fields <bfields at fieldses.org>

The memory leak here is embarassingly obvious.

This fixes a problem that causes the kernel to leak a small amount of
memory every time it receives a integrity-protected request.

Thanks to Aimé Le Rouzic for the bug report.

Signed-off-by: J. Bruce Fields <bfields at citi.umich.edu>
---

 net/sunrpc/auth_gss/svcauth_gss.c |    9 +++++----
 1 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/net/sunrpc/auth_gss/svcauth_gss.c b/net/sunrpc/auth_gss/svcauth_gss.c
index 1f0f079..4648611 100644
--- a/net/sunrpc/auth_gss/svcauth_gss.c
+++ b/net/sunrpc/auth_gss/svcauth_gss.c
@@ -807,19 +807,19 @@ unwrap_integ_data(struct xdr_buf *buf, u32 seq, struct gss_ctx *ctx)
 
 	integ_len = svc_getnl(&buf->head[0]);
 	if (integ_len & 3)
-		goto out;
+		return stat;
 	if (integ_len > buf->len)
-		goto out;
+		return stat;
 	if (xdr_buf_subsegment(buf, &integ_buf, 0, integ_len))
 		BUG();
 	/* copy out mic... */
 	if (read_u32_from_xdr_buf(buf, integ_len, &mic.len))
 		BUG();
 	if (mic.len > RPC_MAX_AUTH_SIZE)
-		goto out;
+		return stat;
 	mic.data = kmalloc(mic.len, GFP_KERNEL);
 	if (!mic.data)
-		goto out;
+		return stat;
 	if (read_bytes_from_xdr_buf(buf, integ_len + 4, mic.data, mic.len))
 		goto out;
 	maj_stat = gss_verify_mic(ctx, &integ_buf, &mic);
@@ -829,6 +829,7 @@ unwrap_integ_data(struct xdr_buf *buf, u32 seq, struct gss_ctx *ctx)
 		goto out;
 	stat = 0;
 out:
+	kfree(mic.data);
 	return stat;
 }