lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Message-ID: <9e415e37-a5bf-459f-8b9c-a02431e8fcfd@web.de>
Date: Sat, 30 Dec 2023 10:47:04 +0100
From: Markus Elfring <Markus.Elfring@....de>
To: linux-cifs@...r.kernel.org, samba-technical@...ts.samba.org,
 kernel-janitors@...r.kernel.org, Paulo Alcantara <pc@...guebit.com>,
 Ronnie Sahlberg <lsahlber@...hat.com>, Shyam Prasad N
 <sprasad@...rosoft.com>, Steve French <sfrench@...ba.org>,
 Tom Talpey <tom@...pey.com>
Cc: LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH] smb3: Improve exception handling in allocate_mr_list()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Fri, 29 Dec 2023 20:43:12 +0100

The kfree() function was called in one case by
the allocate_mr_list() function during error handling
even if the passed variable contained a null pointer.
This issue was detected by using the Coccinelle software.

Thus use another label.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 fs/smb/client/smbdirect.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/smb/client/smbdirect.c b/fs/smb/client/smbdirect.c
index 94df9eec3d8d..d74e829de51c 100644
--- a/fs/smb/client/smbdirect.c
+++ b/fs/smb/client/smbdirect.c
@@ -2136,7 +2136,7 @@ static int allocate_mr_list(struct smbd_connection *info)
 	for (i = 0; i < info->responder_resources * 2; i++) {
 		smbdirect_mr = kzalloc(sizeof(*smbdirect_mr), GFP_KERNEL);
 		if (!smbdirect_mr)
-			goto out;
+			goto cleanup_entries;
 		smbdirect_mr->mr = ib_alloc_mr(info->pd, info->mr_type,
 					info->max_frmr_depth);
 		if (IS_ERR(smbdirect_mr->mr)) {
@@ -2162,7 +2162,7 @@ static int allocate_mr_list(struct smbd_connection *info)

 out:
 	kfree(smbdirect_mr);
-
+cleanup_entries:
 	list_for_each_entry_safe(smbdirect_mr, tmp, &info->mr_list, list) {
 		list_del(&smbdirect_mr->list);
 		ib_dereg_mr(smbdirect_mr->mr);
--
2.43.0


Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ