From: Ming Lei <ming.lei@redhat.com>
To: Martin Svec <martin.svec@zoner.cz>
Cc: linux-block@vger.kernel.org
Subject: Re: NULL pointer dereference in blk_mq_put_rq_ref (LTS kernel 5.10.56)
Date: Tue, 31 Aug 2021 17:33:55 +0800 [thread overview]
Message-ID: <YS33g6bLXCeB7Pue@T590> (raw)
In-Reply-To: <1706c570-6c07-4eb7-219f-de3366e54077@zoner.cz>
On Mon, Aug 30, 2021 at 04:52:54PM +0200, Martin Svec wrote:
> Hi all,
>
> after upgrade from 5.4.x to 5.10.56 one of our LIO iSCSI Target servers hung
> with kernel NULL pointer dereference bug, see below. According to the call trace
> I guess that the bug is related to the generic blk-mq subsystem. I don't see any
> fixes related to blk-mq between 5.10.56 and 5.10.60, so this bug probably occurs
> in latest 5.10 stable releases too. I this a known issue or do you have any ideas
> what's wrong?
The issue should have been fixed by the following two patches:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a9ed27a764156929efe714033edb3e9023c5f321
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c2da19ed50554ce52ecbad3655c98371fe58599f
Thanks,
Ming
next prev parent reply other threads:[~2021-08-31 9:35 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-30 14:52 NULL pointer dereference in blk_mq_put_rq_ref (LTS kernel 5.10.56) Martin Svec
2021-08-31 9:33 ` Ming Lei [this message]
2021-08-31 10:30 ` Martin Svec
2021-09-01 1:35 ` Ming Lei
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=YS33g6bLXCeB7Pue@T590 \
--to=ming.lei@redhat.com \
--cc=linux-block@vger.kernel.org \
--cc=martin.svec@zoner.cz \
/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.