From: Christoph Hellwig <hch@infradead.org>
To: alex+zkern@zazolabs.com
Cc: Yi Zhang <yi.zhang@redhat.com>, Jens Axboe <axboe@kernel.dk>,
fengnanchang@gmail.com, linux-block <linux-block@vger.kernel.org>,
Ming Lei <ming.lei@redhat.com>,
Shinichiro Kawasaki <shinichiro.kawasaki@wdc.com>
Subject: Re: [bug report][bisected] kernel BUG at lib/list_debug.c:32! triggered by blktests nvme/049
Date: Wed, 14 Jan 2026 04:43:57 -0800 [thread overview]
Message-ID: <aWePjbx5p269pXzn@infradead.org> (raw)
In-Reply-To: <4817253e-2cec-4cf8-95c4-6292e758fb8f@zazolabs.com>
On Wed, Jan 14, 2026 at 11:40:41AM +0200, Alexander Atanasov wrote:
> Double linked lists require init, single lists do not (including
> io_wq_work_list). iopoll_node is never list_init-ed. So init before adding.
>
> Can you check if this fixes it for you? If yes, i will submit it as a proper
> patch - no way to test it at the moment.
The heads (anchors) of lists need initializations. The entries added
to the list do not. I know this is a bit confusing because they use
the same time, but besides not compiling due to the double-&, the patch
would not do anything even the version that would compile.
next prev parent reply other threads:[~2026-01-14 12:44 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-07 16:39 [bug report] kernel BUG at lib/list_debug.c:32! triggered by blktests nvme/049 Yi Zhang
2026-01-07 16:48 ` Jens Axboe
2026-01-08 6:39 ` Yi Zhang
2026-01-14 5:58 ` [bug report][bisected] " Yi Zhang
2026-01-14 9:40 ` Alexander Atanasov
2026-01-14 12:43 ` Christoph Hellwig [this message]
2026-01-14 14:11 ` Ming Lei
2026-01-14 14:43 ` Jens Axboe
2026-01-14 14:58 ` Jens Axboe
2026-01-14 15:20 ` Ming Lei
2026-01-14 15:26 ` Jens Axboe
2026-01-16 11:54 ` Alexander Atanasov
2026-01-16 12:41 ` 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=aWePjbx5p269pXzn@infradead.org \
--to=hch@infradead.org \
--cc=alex+zkern@zazolabs.com \
--cc=axboe@kernel.dk \
--cc=fengnanchang@gmail.com \
--cc=linux-block@vger.kernel.org \
--cc=ming.lei@redhat.com \
--cc=shinichiro.kawasaki@wdc.com \
--cc=yi.zhang@redhat.com \
/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.