linux-kernel - Re: Linux guest domain with two vnets bound to the same vswitch experiences hung in bootup (sun

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]

Date:	Fri, 09 Oct 2009 15:08:29 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	heyongli@...il.com
Cc:	sparclinux@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: Linux guest domain with two vnets bound to the same vswitch
 experiences hung in bootup (sun_netraT5220)

From: hyl <heyongli@...il.com>
Date: Thu, 24 Sep 2009 10:03:25 +0800

> Subject: [PATCH] Sun ldom vnet driver dead lock
> 
> if 2 vnet attach to same vswitch, ldom will report
> 2 same irq then lead to dead lock on the lp->lock
> or the vio->lock
> 
> static irqreturn_t ldc_rx(int irq, void *dev_id){
> ...
> out:
> 	spin_unlock_irqrestore(&lp->lock, flags);
>            << here run with out any lock
> 	send_events(lp, event_mask);
>            >> vnet evetn process will dead lock on
>            >> lp->lock or the vio->lock
> 
> Signed-off-by: Yongli He <heyongli@...il.com>

Thank you for this bug report and patch, I am looking at
it now.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/