From: vinod.koul@intel.com (Vinod Koul)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2] dmaengine: dmatest: warn user when dma test times out
Date: Wed, 8 Nov 2017 11:23:59 +0530 [thread overview]
Message-ID: <20171108055358.GO3187@localhost> (raw)
In-Reply-To: <1509627210-16904-1-git-send-email-awallis@codeaurora.org>
On Thu, Nov 02, 2017 at 08:53:30AM -0400, Adam Wallis wrote:
> Commit adfa543e7314 ("dmatest: don't use set_freezable_with_signal()")
> introduced a bug (that is in fact documented by the patch commit text)
> that leaves behind a dangling pointer. Since the done_wait structure is
> allocated on the stack, future invocations to the DMATEST can produce
> undesirable results (e.g., corrupted spinlocks). Ideally, this would be
> cleaned up in the thread handler, but at the very least, the kernel
> is left in a very precarious scenario that can lead to some long debug
> sessions when the crash comes later.
>
> This bug has also been captured at
> https://bugzilla.kernel.org/show_bug.cgi?id=197605
I have made it
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=197605
> Signed-off-by: Adam Wallis <awallis@codeaurora.org>
and applied. Thanks
--
~Vinod
prev parent reply other threads:[~2017-11-08 5:53 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-11-02 12:53 [PATCH v2] dmaengine: dmatest: warn user when dma test times out Adam Wallis
2017-11-07 18:23 ` Adam Wallis
2017-11-08 5:53 ` Vinod Koul [this message]
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