netdev - Re: [PATCH] igmp: spin_lock_bh in timer (Re: BUG: soft lockup detected on CPU#0!)

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]

Date:	Fri, 22 Dec 2006 22:16:30 +1100
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	jarkao2@...pl (Jarek Poplawski)
Cc:	greearb@...delatech.com, netdev@...r.kernel.org,
	davem@...emloft.net
Subject: Re: [PATCH] igmp: spin_lock_bh in timer (Re: BUG: soft lockup detected on CPU#0!)

Jarek Poplawski <jarkao2@...pl> wrote:
>
> [PATCH] igmp: spin_lock_bh in timer
> 
> igmp_timer_expire() uses spin_lock(&im->lock)
> but this lock is also taken by other igmp timers,
> so it should be changed to bh version.

When you're in a timer BH is already disabled.  So this patch
is redundant.

Thanks,
-- 
Visit Openswan at http://www.openswan.org/
Email: Herbert Xu ~{PmV>HI~} <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
-
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