[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Message-ID: <1368742990.3301.67.camel@edumazet-glaptop>
Date: Thu, 16 May 2013 15:23:10 -0700
From: Eric Dumazet <eric.dumazet@...il.com>
To: David Miller <davem@...emloft.net>,
Herbert Xu <herbert@...dor.apana.org.au>
Cc: netdev <netdev@...r.kernel.org>,
Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>,
Neal Cardwell <ncardwell@...gle.com>
Subject: [RFC/BUG] ipv6: bug in "ipv6: Copy cork options in ip6_append_data"
Hi Herbert
Looking at the code added in commit 0178b695fd6b40a62a215cb
("ipv6: Copy cork options in ip6_append_data") it looks like we can have
either a memleak or corruption (later in ip6_cork_release()) in case one
of the sub-allocation (ip6_opt_dup()/ip6_rthdr_dup()) fails.
I would at least use a kzalloc() instead of kmalloc() in
np->cork.opt = kmalloc(opt->tot_len, sk->sk_allocation);
Or maybe better, reuse the code in ipv6_dup_options() so that we
perform a single memory allocation ?
Am I missing something obvious ?
Thanks !
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Powered by blists - more mailing lists