linux-kernel - [PATCH] sunrpc: fix a resource leak in gss_proxy_save

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Message-Id: <20260126021047.2478741-1-lihaoxiang@isrc.iscas.ac.cn>
Date: Mon, 26 Jan 2026 10:10:47 +0800
From: Haoxiang Li <lihaoxiang@...c.iscas.ac.cn>
To: trondmy@...nel.org,
	anna@...nel.org,
	davem@...emloft.net,
	edumazet@...gle.com,
	kuba@...nel.org,
	pabeni@...hat.com,
	horms@...nel.org,
	llfamsec@...il.com,
	simo@...hat.com,
	bfields@...ldses.org
Cc: linux-nfs@...r.kernel.org,
	netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Haoxiang Li <lihaoxiang@...c.iscas.ac.cn>,
	stable@...r.kernel.org
Subject: [PATCH] sunrpc: fix a resource leak in gss_proxy_save_rsc()

In gss_proxy_save_rsc(), if gss_import_sec_context() fails,
call gss_mech_put() to release the reources acquired by
gss_mech_get_by_OID().

Fixes: 030d794bf498 ("SUNRPC: Use gssproxy upcall for server RPCGSS authentication.")
Cc: stable@...r.kernel.org
Signed-off-by: Haoxiang Li <lihaoxiang@...c.iscas.ac.cn>
---
 net/sunrpc/auth_gss/svcauth_gss.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/net/sunrpc/auth_gss/svcauth_gss.c b/net/sunrpc/auth_gss/svcauth_gss.c
index a8ec30759a18..cdae1f23adfc 100644
--- a/net/sunrpc/auth_gss/svcauth_gss.c
+++ b/net/sunrpc/auth_gss/svcauth_gss.c
@@ -1268,8 +1268,10 @@ static int gss_proxy_save_rsc(struct cache_detail *cd,
 						ud->out_handle.len,
 						gm, &rsci.mechctx,
 						&expiry, GFP_KERNEL);
-		if (status)
+		if (status) {
+			gss_mech_put(gm);
 			goto out;
+		}
 
 		getboottime64(&boot);
 		expiry -= boot.tv_sec;
-- 
2.25.1