From: Sowmini Varadhan <sowmini.varadhan@oracle.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-kernel@vger.kernel.org, benh@kernel.crashing.org,
linux@roeck-us.net, davem@davemloft.net
Subject: Re: [PATCH] iommu-common: Do not try to deref a null iommu->lazy_flush() pointer when n < pool->hint
Date: Thu, 17 Sep 2015 17:32:13 -0400 [thread overview]
Message-ID: <20150917213213.GE20745@oracle.com> (raw)
In-Reply-To: <20150917142644.a7a3c272be10280028c5ad3a@linux-foundation.org>
On (09/17/15 14:26), Andrew Morton wrote:
> Patch looks good.
>
> But I don't know which kernel versions need the fix. So, when fixing a
> bug please always describe the end-user visible effects of that bug.
> Under what circumstances did your kernel crash?
>
I had a sparc kernel that was crashing when I was trying to process
some very large perf.data files- the crash happens when the scsi
driver calls into dma_4v_map_sg and thus the iommu_tbl_range_alloc().
Do you need me to respin the patch with the above info in the
commit id?
--Sowmini
next prev parent reply other threads:[~2015-09-17 21:32 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-17 1:50 [PATCH] iommu-common: Do not try to deref a null iommu->lazy_flush() pointer when n < pool->hint Sowmini Varadhan
2015-09-17 21:26 ` Andrew Morton
2015-09-17 21:32 ` Sowmini Varadhan [this message]
2015-09-17 21:41 ` Andrew Morton
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=20150917213213.GE20745@oracle.com \
--to=sowmini.varadhan@oracle.com \
--cc=akpm@linux-foundation.org \
--cc=benh@kernel.crashing.org \
--cc=davem@davemloft.net \
--cc=linux-kernel@vger.kernel.org \
--cc=linux@roeck-us.net \
/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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.