linux-kernel - Subject: [PATCH] net/ipv6: Use GFP

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: <Pine.LNX.4.64.1005302147310.19253@ask.diku.dk>
Date:	Sun, 30 May 2010 21:48:03 +0200 (CEST)
From:	Julia Lawall <julia@...u.dk>
To:	"David S. Miller" <davem@...emloft.net>,
	Alexey Kuznetsov <kuznet@....inr.ac.ru>,
	"Pekka Savola (ipv6)" <pekkas@...core.fi>,
	James Morris <jmorris@...ei.org>,
	Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>,
	Patrick McHardy <kaber@...sh.net>, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: Subject: [PATCH] net/ipv6: Use GFP_ATOMIC when a lock is held

From: Julia Lawall <julia@...u.dk>

A spin lock is taken near the beginning of the enclosing function.

The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
@@

spin_lock(...)
... when != spin_unlock(...)
-GFP_KERNEL
+GFP_ATOMIC
// </smpl>

Signed-off-by: Julia Lawall <julia@...u.dk>

---
 net/ipv6/sit.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff -u -p a/net/ipv6/sit.c b/net/ipv6/sit.c
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -358,7 +358,7 @@ ipip6_tunnel_add_prl(struct ip_tunnel *t
 		goto out;
 	}
 
-	p = kzalloc(sizeof(struct ip_tunnel_prl_entry), GFP_KERNEL);
+	p = kzalloc(sizeof(struct ip_tunnel_prl_entry), GFP_ATOMIC);
 	if (!p) {
 		err = -ENOBUFS;
 		goto out;
--
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/