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: avoid free_q underflow in free_chan_resources
Date: Thu, 03 Sep 2026 22:34:25 +0530 [thread overview]
Message-ID: <178845506569.1711546.12890477757818876315.b4-ty@kernel.org> (raw)
In-Reply-To: <20260718235227.385108-1-rosenp@gmail.com>
On Sat, 18 Jul 2026 16:52:27 -0700, Rosen Penev wrote:
> fsl_re_free_chan_resources() loops alloc_count times calling
> list_first_entry() on free_q without checking whether the list still
> has entries. If descriptors remain un-acked or pending in submit_q /
> active_q / ack_q when the channel resources are freed, free_q becomes
> smaller than alloc_count and list_first_entry() returns the list head,
> causing list_del() to corrupt the list head and dereference a bogus
> pointer.
>
> [...]
Applied, thanks!
[1/1] dmaengine: fsl_raid: avoid free_q underflow in free_chan_resources
commit: d805aa5b6088b193debabaa80cc0991bfa2bd057
Best regards,
--
~Vinod
prev parent reply other threads:[~2026-09-03 17:04 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-18 23:52 Rosen Penev
2026-07-20 15:56 ` Frank Li
2026-09-03 17:04 ` Vinod Koul [this message]
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