From: Leon Romanovsky <leon@kernel.org>
To: Long Li <longli@microsoft.com>,
Konstantin Taranov <kotaranov@microsoft.com>,
Jason Gunthorpe <jgg@ziepe.ca>,
Shiraz Saleem <shirazsaleem@microsoft.com>,
Leon Romanovsky <leon@kernel.org>
Cc: linux-rdma@vger.kernel.org, linux-hyperv@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH rdma-next] RDMA/mana_ib: drain QP references after partial table insertion
Date: Wed, 22 Jul 2026 05:35:24 -0400 [thread overview]
Message-ID: <178471292478.2833269.3803392129606476657.b4-ty@kernel.org> (raw)
In-Reply-To: <20260721-if-mana-table-store-qp-qids-partiall-v1-1-8fb3d2d2b559@nvidia.com>
On Tue, 21 Jul 2026 18:00:01 +0300, Leon Romanovsky wrote:
> mana_table_store_ud_qp() publishes a QP at its send-queue id before
> inserting the receive-queue id, dropping the XArray lock between the two
> xa_insert_irq() calls. A concurrent completion handler can look up the QP
> and take a transient reference. When the second insertion fails, the
> rollback erased only the send-queue entry and returned, leaving both the
> initial table reference and the transient reference outstanding while RDMA
> core frees the QP, causing a use-after-free.
>
> [...]
Applied, thanks!
[1/1] RDMA/mana_ib: drain QP references after partial table insertion
https://git.kernel.org/rdma/rdma/c/97f7c2262c28eb
Best regards,
--
Leon Romanovsky <leon@kernel.org>
prev parent reply other threads:[~2026-07-22 9:35 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-21 15:00 [PATCH rdma-next] RDMA/mana_ib: drain QP references after partial table insertion Leon Romanovsky
2026-07-21 19:29 ` [EXTERNAL] " Long Li
2026-07-22 9:18 ` Konstantin Taranov
2026-07-22 9:34 ` Leon Romanovsky
2026-07-22 9:35 ` Leon Romanovsky [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=178471292478.2833269.3803392129606476657.b4-ty@kernel.org \
--to=leon@kernel.org \
--cc=jgg@ziepe.ca \
--cc=kotaranov@microsoft.com \
--cc=linux-hyperv@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-rdma@vger.kernel.org \
--cc=longli@microsoft.com \
--cc=shirazsaleem@microsoft.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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox