linux-kernel - [2.6.38-rc8, patch] fix hci_dev

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: <AANLkTinN=eYJB3wF9jw7vbbTtUgOzr8oap4+i21Uei5X@mail.gmail.com>
Date:	Wed, 9 Mar 2011 00:07:54 +0800
From:	Daniel J Blueman <daniel.blueman@...il.com>
To:	Linux Kernel <linux-kernel@...r.kernel.org>,
	linux-bluetooth@...r.kernel.org
Subject: [2.6.38-rc8, patch] fix hci_dev_list locking

No response from original post, and it missed getting taken into -rc7
and -rc8, so repost:

Release acquired lock on error path, fixing potential hang up.

Signed-off-by: Daniel J Blueman <daniel.blueman@...il.com>

diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index f827fd9..ace8726 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -111,8 +111,10 @@ static int read_index_list(struct sock *sk)

 	body_len = sizeof(*ev) + sizeof(*rp) + (2 * count);
 	skb = alloc_skb(sizeof(*hdr) + body_len, GFP_ATOMIC);
-	if (!skb)
+	if (!skb) {
+		read_unlock(&hci_dev_list_lock);
 		return -ENOMEM;
+	}

 	hdr = (void *) skb_put(skb, sizeof(*hdr));
 	hdr->opcode = cpu_to_le16(MGMT_EV_CMD_COMPLETE);--
-- 
Daniel J Blueman
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/