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] [day] [month] [year] [list]
Date:   Sat, 24 Mar 2018 12:52:18 +0300
From:   Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To:     Saeed Mahameed <saeedm@...lanox.com>,
        "David S. Miller" <davem@...emloft.net>
Cc:     netdev@...r.kernel.org, Or Gerlitz <ogerlitz@...lanox.com>
Subject: Re: [net 7/8] net/mlx5e: Avoid using the ipv6 stub in the TC offload
 neigh update path

Hello!

On 3/24/2018 1:05 AM, Saeed Mahameed wrote:

> From: Or Gerlitz <ogerlitz@...lanox.com>
> 
> Currently we use the global ipv6_stub var to access the ipv6 global
> nd table. This practice gets us to troubles when the stub is only partially
> set e.g when ipv6 is loaded under the disabled policy. In this case, as of commit
> 343d60aada5a "ipv6: change ipv6_stub_impl.ipv6_dst_lookup to take net argument"

    The summary line must be enclosed in (""), not just "".

> the stub is not null, but stub->nd_tbl is and we crash.
> 
> As we can access directly the ipv6 nd_tbl, the fix is just avoid the

As we can access the ipv6 nd_tbl directly, the fix is just to avoid the

> reference through the stub. There is one place in the code were we
                                                              ^^^^
     Where?

> issue ipv6 route lookup and keep doing it through the stub, but that
> mentioned commit makes sure we get -EAFNOSUPPORT from the stack.
> 
> Fixes: 232c001398ae ('net/mlx5e: Add support to neighbour update flow')

    ("") here as well.

> Signed-off-by: Or Gerlitz <ogerlitz@...lanox.com>
> Reviewed-by: Aviv Heller <avivh@...lanox.com>
> Signed-off-by: Saeed Mahameed <saeedm@...lanox.com>
[...]

MBR, Sergei

Powered by blists - more mailing lists