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>
--
To unsubscribe from this list: send the line "unsubscribe linux-rdma" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
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]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=50215FDE.2090904@acm.org \
--to=bvanassche-hinycgiudog@public.gmane.org \
--cc=dotanb-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org \
--cc=jackm-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org \
--cc=linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=ogerlitz-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org \
--cc=roland-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org \
--cc=yevgenyp-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).