From: Bart Van Assche <bvanassche-HInyCGIudOg@public.gmane.org>
To: Jack Morgenstein
<jackm-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
Cc: roland-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
dotanb-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org,
ogerlitz-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org,
yevgenyp-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org
Subject: Re: [PATCH] IB/mlx4: fix possible deadlock with sm_lock spinlock
Date: Tue, 07 Aug 2012 18:35:10 +0000 [thread overview]
Message-ID: <50215FDE.2090904@acm.org> (raw)
In-Reply-To: <1343982405-2828-1-git-send-email-jackm-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
On 08/03/12 08:26, Jack Morgenstein wrote:
> The sm_lock spinlock is taken in the process context by mlx4_ib_modify_device,
> and in the interrupt context by update_sm_ah.
>
> Need to take that spinlock with irqsave, and release it with irqrestore.
>
> [ ... ]
>
> Reported by: Or Gerlitz <ogerlitz-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
> Signed-off-by: Jack Morgenstein <jackm-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
Tested-by: Bart Van Assche <bvanassche-HInyCGIudOg@public.gmane.org>
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prev parent reply other threads:[~2012-08-07 18:35 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-03 8:26 [PATCH] IB/mlx4: fix possible deadlock with sm_lock spinlock Jack Morgenstein
[not found] ` <1343982405-2828-1-git-send-email-jackm-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
2012-08-07 18:35 ` Bart Van Assche [this message]
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