From 89c545e29ecd6252968611b3ee2599034b911dd8 Mon Sep 17 00:00:00 2001 From: Christian Brauner Date: Mon, 3 Nov 2025 15:57:29 +0100 Subject: [PATCH] sev-dev: use prepare credential guard Use the prepare credential guard for allocating a new set of credentials. Link: https://patch.msgid.link/20251103-work-creds-guards-prepare_creds-v1-3-b447b82f2c9b@kernel.org Signed-off-by: Christian Brauner --- drivers/crypto/ccp/sev-dev.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/crypto/ccp/sev-dev.c b/drivers/crypto/ccp/sev-dev.c index c5e22af04abb..be3e5454c285 100644 --- a/drivers/crypto/ccp/sev-dev.c +++ b/drivers/crypto/ccp/sev-dev.c @@ -261,22 +261,22 @@ static struct file *open_file_as_root(const char *filename, int flags, umode_t m { struct path root __free(path_put) = {}; struct file *fp; - struct cred *cred; const struct cred *old_cred; task_lock(&init_task); get_fs_root(init_task.fs, &root); task_unlock(&init_task); - cred = prepare_creds(); + CLASS(prepare_creds, cred)(); if (!cred) return ERR_PTR(-ENOMEM); + cred->fsuid = GLOBAL_ROOT_UID; old_cred = override_creds(cred); fp = file_open_root(&root, filename, flags, mode); - put_cred(revert_creds(old_cred)); + revert_creds(old_cred); return fp; } -- 2.47.3