From: Vinod Koul <vkoul@kernel.org>
To: dmaengine@vger.kernel.org, Rosen Penev <rosenp@gmail.com>
Cc: Frank Li <Frank.Li@kernel.org>,
Harninder Rai <harninder.rai@freescale.com>,
Xuelin Shi <xuelin.shi@freescale.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] dmaengine: fsl_raid: zero CF descriptor pool allocations
Date: Thu, 10 Sep 2026 19:40:26 +0530 [thread overview]
Message-ID: <178904942676.118320.14801400250683856639.b4-ty@kernel.org> (raw)
In-Reply-To: <20260820031654.28450-1-rosenp@gmail.com>
On Wed, 19 Aug 2026 20:16:54 -0700, Rosen Penev wrote:
> The compound frame descriptors and embedded CDBs are allocated from the
> cf_desc_pool with dma_pool_alloc(), which does not zero the memory. Only
> cdb32, the gfm coefficients and the frame address/length fields are
> programmed; the dpi_dest_spec/dpi_src_spec fields in the CDBs and the
> rbro32 field of each frame are left uninitialized. The hardware reads
> the whole block (frame 0 length is sizeof(struct fsl_re_xor_cdb) or
> sizeof(struct fsl_re_pq_cdb)), so uninitialized heap contents are
> exposed to the device on each new descriptor.
>
> [...]
Applied, thanks!
[1/1] dmaengine: fsl_raid: zero CF descriptor pool allocations
commit: 26d48e9fb6997f4026dd86daecf8d2c12258f698
Best regards,
--
~Vinod
prev parent reply other threads:[~2026-09-10 14:10 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-20 3:16 [PATCH] dmaengine: fsl_raid: zero CF descriptor pool allocations Rosen Penev
2026-08-20 3:28 ` sashiko-bot
2026-08-20 15:30 ` Frank Li
2026-09-10 14:10 ` Vinod Koul [this message]
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