linux-kernel - [PATCH 09/12] coredump: use prepare credential guard

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Message-Id: <20251103-work-creds-guards-prepare_creds-v1-9-b447b82f2c9b@kernel.org>
Date: Mon, 03 Nov 2025 15:57:35 +0100
From: Christian Brauner <brauner@...nel.org>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-aio@...ck.org, linux-unionfs@...r.kernel.org, 
 linux-erofs@...ts.ozlabs.org, linux-nfs@...r.kernel.org, 
 linux-cifs@...r.kernel.org, samba-technical@...ts.samba.org, 
 cgroups@...r.kernel.org, netdev@...r.kernel.org, 
 linux-crypto@...r.kernel.org, linux-trace-kernel@...r.kernel.org, 
 Christian Brauner <brauner@...nel.org>
Subject: [PATCH 09/12] coredump: use prepare credential guard

Use the prepare credential guard for allocating a new set of
credentials.

Signed-off-by: Christian Brauner <brauner@...nel.org>
---
 fs/coredump.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/fs/coredump.c b/fs/coredump.c
index 79c681f1d647..5424a6c4e360 100644
--- a/fs/coredump.c
+++ b/fs/coredump.c
@@ -1155,7 +1155,6 @@ static void do_coredump(struct core_name *cn, struct coredump_params *cprm,
 
 void vfs_coredump(const kernel_siginfo_t *siginfo)
 {
-	struct cred *cred __free(put_cred) = NULL;
 	size_t *argv __free(kfree) = NULL;
 	struct core_state core_state;
 	struct core_name cn;
@@ -1183,7 +1182,7 @@ void vfs_coredump(const kernel_siginfo_t *siginfo)
 	if (coredump_skip(&cprm, binfmt))
 		return;
 
-	cred = prepare_creds();
+	CLASS(prepare_creds, cred)();
 	if (!cred)
 		return;
 	/*

-- 
2.47.3