From: Vinod Koul <vkoul@kernel.org>
To: Eugeniy.Paltsev@synopsys.com, dmaengine@vger.kernel.org,
Joao Pinto <Joao.Pinto@synopsys.com>
Cc: Martin.McKenny@synopsys.com, linux-kernel@vger.kernel.org
Subject: Re: [PATCH RESEND] Avoid hw_desc array overrun in dw-axi-dmac
Date: Sun, 07 Apr 2024 22:09:15 +0530 [thread overview]
Message-ID: <171250795567.435322.8170668108281183858.b4-ty@kernel.org> (raw)
In-Reply-To: <1711536564-12919-1-git-send-email-jpinto@synopsys.com>
On Wed, 27 Mar 2024 10:49:24 +0000, Joao Pinto wrote:
> I have a use case where nr_buffers = 3 and in which each descriptor is composed by 3
> segments, resulting in the DMA channel descs_allocated to be 9. Since axi_desc_put()
> handles the hw_desc considering the descs_allocated, this scenario would result in a
> kernel panic (hw_desc array will be overrun).
>
> To fix this, the proposal is to add a new member to the axi_dma_desc structure,
> where we keep the number of allocated hw_descs (axi_desc_alloc()) and use it in
> axi_desc_put() to handle the hw_desc array correctly.
>
> [...]
Applied, thanks!
[1/1] Avoid hw_desc array overrun in dw-axi-dmac
commit: 333e11bf47fa8d477db90e2900b1ed3c9ae9b697
Best regards,
--
~Vinod
prev parent reply other threads:[~2024-04-07 16:39 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-27 10:49 [PATCH RESEND] Avoid hw_desc array overrun in dw-axi-dmac Joao Pinto
2024-04-07 16:39 ` Vinod Koul [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=171250795567.435322.8170668108281183858.b4-ty@kernel.org \
--to=vkoul@kernel.org \
--cc=Eugeniy.Paltsev@synopsys.com \
--cc=Joao.Pinto@synopsys.com \
--cc=Martin.McKenny@synopsys.com \
--cc=dmaengine@vger.kernel.org \
--cc=linux-kernel@vger.kernel.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 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.