From: Christian Brauner <brauner@kernel.org>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Christian Brauner <brauner@kernel.org>,
Amir Goldstein <amir73il@gmail.com>,
Miklos Szeredi <miklos@szeredi.hu>,
linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org
Subject: [PATCH 08/26] sev-dev: avoid pointless cred reference count bump
Date: Sun, 24 Nov 2024 14:43:54 +0100 [thread overview]
Message-ID: <20241124-work-cred-v1-8-f352241c3970@kernel.org> (raw)
In-Reply-To: <20241124-work-cred-v1-0-f352241c3970@kernel.org>
and fix a memory leak while at it. The new creds are created via
prepare_creds() and then reverted via put_cred(revert_creds()). The
additional reference count bump from override_creds() wasn't even taken
into account before.
Signed-off-by: Christian Brauner <brauner@kernel.org>
---
drivers/crypto/ccp/sev-dev.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/crypto/ccp/sev-dev.c b/drivers/crypto/ccp/sev-dev.c
index 187c34b02442dd50640f88713bc5f6f88a1990f4..2e87ca0e292a1c1706a8e878285159b481b68a6f 100644
--- a/drivers/crypto/ccp/sev-dev.c
+++ b/drivers/crypto/ccp/sev-dev.c
@@ -244,7 +244,7 @@ static struct file *open_file_as_root(const char *filename, int flags, umode_t m
if (!cred)
return ERR_PTR(-ENOMEM);
cred->fsuid = GLOBAL_ROOT_UID;
- old_cred = override_creds(get_new_cred(cred));
+ old_cred = override_creds(cred);
fp = file_open_root(&root, filename, flags, mode);
path_put(&root);
--
2.45.2
next prev parent reply other threads:[~2024-11-24 13:44 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-11-22 9:57 [GIT PULL] overlayfs updates for 6.13 Amir Goldstein
2024-11-23 5:21 ` Linus Torvalds
2024-11-23 5:22 ` Linus Torvalds
2024-11-23 6:09 ` Linus Torvalds
2024-11-23 6:14 ` Al Viro
2024-11-23 17:18 ` Linus Torvalds
2024-11-23 12:06 ` Christian Brauner
2024-11-23 17:29 ` Linus Torvalds
2024-11-24 13:43 ` [PATCH 00/26] cred: rework {override,revert}_creds() Christian Brauner
2024-11-24 13:43 ` [PATCH 01/26] tree-wide: s/override_creds()/override_creds_light(get_new_cred())/g Christian Brauner
2024-11-24 13:43 ` [PATCH 02/26] cred: return old creds from revert_creds_light() Christian Brauner
2024-11-24 13:43 ` [PATCH 03/26] tree-wide: s/revert_creds()/put_cred(revert_creds_light())/g Christian Brauner
2024-11-24 13:43 ` [PATCH 04/26] cred: remove old {override,revert}_creds() helpers Christian Brauner
2024-11-24 13:43 ` [PATCH 05/26] tree-wide: s/override_creds_light()/override_creds()/g Christian Brauner
2024-11-24 13:43 ` [PATCH 06/26] tree-wide: s/revert_creds_light()/revert_creds()/g Christian Brauner
2024-11-24 13:43 ` [PATCH 07/26] firmware: avoid pointless reference count bump Christian Brauner
2024-11-24 14:56 ` Amir Goldstein
2024-11-24 13:43 ` Christian Brauner [this message]
2024-11-24 18:19 ` [PATCH 08/26] sev-dev: avoid pointless cred " Al Viro
2024-11-24 13:43 ` [PATCH 09/26] target_core_configfs: " Christian Brauner
2024-11-24 18:26 ` Al Viro
2024-11-25 11:31 ` Christian Brauner
2024-11-24 13:43 ` [PATCH 10/26] aio: " Christian Brauner
2024-11-24 13:43 ` [PATCH 11/26] binfmt_misc: " Christian Brauner
2024-11-24 13:43 ` [PATCH 12/26] coredump: " Christian Brauner
2024-11-24 13:43 ` [PATCH 13/26] nfs/localio: avoid pointless cred reference count bumps Christian Brauner
2024-11-24 13:44 ` [PATCH 14/26] nfs/nfs4idmap: avoid pointless reference count bump Christian Brauner
2024-11-24 13:44 ` [PATCH 15/26] nfs/nfs4recover: avoid pointless cred " Christian Brauner
2024-11-25 13:10 ` Chuck Lever
2024-11-24 13:44 ` [PATCH 16/26] nfsfh: " Christian Brauner
2024-11-25 13:11 ` Chuck Lever
2024-11-24 13:44 ` [PATCH 17/26] open: " Christian Brauner
2024-11-24 13:44 ` [PATCH 18/26] ovl: " Christian Brauner
2024-11-24 14:59 ` Amir Goldstein
2024-11-25 11:30 ` Christian Brauner
2024-11-24 13:44 ` [PATCH 19/26] cifs: " Christian Brauner
2024-11-24 13:44 ` [PATCH 20/26] " Christian Brauner
2024-11-24 13:44 ` [PATCH 21/26] smb: " Christian Brauner
2024-11-24 18:37 ` Al Viro
2024-11-25 11:22 ` Christian Brauner
2024-11-24 13:44 ` [PATCH 22/26] io_uring: " Christian Brauner
2024-11-24 13:44 ` [PATCH 23/26] acct: avoid pointless " Christian Brauner
2024-11-24 13:44 ` [PATCH 24/26] cgroup: avoid pointless cred " Christian Brauner
2024-11-24 13:44 ` [PATCH 25/26] trace: " Christian Brauner
2024-11-24 13:44 ` [PATCH 26/26] dns_resolver: " Christian Brauner
2024-11-24 17:00 ` [PATCH 00/26] cred: rework {override,revert}_creds() Amir Goldstein
2024-11-24 18:00 ` Linus Torvalds
2024-11-25 11:46 ` Christian Brauner
2024-11-25 12:55 ` Amir Goldstein
2024-11-25 14:13 ` Christian Brauner
2024-11-25 13:51 ` Jeff Layton
2024-11-23 18:47 ` [GIT PULL] overlayfs updates for 6.13 Christian Brauner
2024-11-23 5:57 ` pr-tracker-bot
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