From: Arpith Alexander <arpith99@gmail.com>
To: liuwb@xiaopeng.com
Cc: broonie@kernel.org, linux-kernel@vger.kernel.org,
linux-spi@vger.kernel.org, lixu.zhang@intel.com,
sakari.ailus@linux.intel.com, stable@vger.kernel.org,
wentong.wu@intel.com
Subject: Re: [PATCH v2] spi: ljca: validate the response length before copying the data
Date: Tue, 3 Nov 2026 19:06:08 +0530 [thread overview]
Message-ID: <20261103133608.29246-1-arpith99@gmail.com> (raw)
In-Reply-To: <20261013031717.3933277-1-liuwb@xiaopeng.com>
On Tue, 13 Oct 2026 11:17:17 +0800, Weibin Liu wrote:
> Check that the response carries the full header before reading
> r_packet->len, then reject responses whose payload is not contained in
> the data received or is longer than the requested transfer.
This breaks SPI writes on a Dell XPS 13 9340: the LJCA acks a write with
only the packet header (len = bytes written, no payload), so every write
now fails with -EIO and the IVSC behind it no longer initialises.
Fix posted here:
https://lore.kernel.org/linux-spi/20261103131435.21838-1-arpith99@gmail.com/
prev parent reply other threads:[~2026-11-03 13:36 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-29 8:01 [PATCH] " Weibin Liu
2026-09-29 11:00 ` Sakari Ailus
2026-09-29 11:02 ` Mark Brown
2026-10-13 3:17 ` [PATCH v2] " Weibin Liu
2026-10-13 19:46 ` Mark Brown
2026-11-03 13:36 ` Arpith Alexander [this message]
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