netdev - Re: net: non contiguous allocations passed to build

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-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <1429912974.22254.135.camel@edumazet-glaptop2.roam.corp.google.com>
Date:	Fri, 24 Apr 2015 15:02:54 -0700
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Sasha Levin <sasha.levin@...cle.com>
Cc:	"David S. Miller" <davem@...emloft.net>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: net: non contiguous allocations passed to build_skb

On Fri, 2015-04-24 at 17:28 -0400, Sasha Levin wrote:
> Hey Eric,
> 
> Your commit 79930f5892e ("net: do not deplete pfmemalloc reserve") assumes that
> build_skb() will only handle contiguous allocations because of the
> virt_to_head_page().
> 
> However, netlink_sendmsg() calls build_skb() with vmalloc()ed memory, causing:

gosh. netlink & vmalloc() striked again.


--
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