netdev - Re: [PATCH][PPPOL2TP]: Fix SMP oops in pppol2tp driver

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 for Android: free password hash cracker in your pocket

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

Message-ID: <47BDB030.1050105@gmail.com>
Date:	Thu, 21 Feb 2008 18:09:04 +0100
From:	Jarek Poplawski <jarkao2@...il.com>
To:	James Chapman <jchapman@...alix.com>
CC:	David Miller <davem@...emloft.net>,
	Paul Mackerras <paulus@...ba.org>, netdev@...r.kernel.org
Subject: Re: [PATCH][PPPOL2TP]: Fix SMP oops in pppol2tp driver

Jarek Poplawski wrote, On 02/21/2008 01:08 PM:
...

> Another, probably simpler way would be to move almost all pppol2tp_xmit
...

Actually, the simplest off all seems to be now this old idea to maybe make
sk_dst_lock globally softirq immune. At least I think it's worth of testing,
to check for these other possible lockdep warnings. It should only need to
change all write_ and read_lock(&sk->sk_dst_lock) in very few places:
include/net/sock.h, include/net/ip6_route.h, and net/ipv6/ipv6_sockglue.c.
This could be tested together with you full _bh locking patch (maybe except
these other changes in pppol2tp_xmit).

Jarek P.

--
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