[v2,0/2] spi: spi-qpic-snand: avoid memory corruption

Message ID	20250529-qpic-snand-avoid-mem-corruption-v2-0-2f0d13afc7d2@gmail.com
Headers	show Received: from mail-ej1-f52.google.com (mail-ej1-f52.google.com [209.85.218.52]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E597F1632C8; Thu, 29 May 2025 17:25:22 +0000 (UTC) From: Gabor Juhos <j4g8y7@gmail.com> Subject: [PATCH v2 0/2] spi: spi-qpic-snand: avoid memory corruption Date: Thu, 29 May 2025 19:25:09 +0200 Message-Id: <20250529-qpic-snand-avoid-mem-corruption-v2-0-2f0d13afc7d2@gmail.com> Precedence: bulk MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit To: Mark Brown <broonie@kernel.org>, Md Sadre Alam <quic_mdalam@quicinc.com>, Varadarajan Narayanan <quic_varada@quicinc.com>, Sricharan Ramabadhran <quic_srichara@quicinc.com>, Miquel Raynal <miquel.raynal@bootlin.com>, Richard Weinberger <richard@nod.at>, Vignesh Raghavendra <vigneshr@ti.com> Cc: linux-spi@vger.kernel.org, linux-mtd@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, Gabor Juhos <j4g8y7@gmail.com>, Lakshmi Sowjanya D <quic_laksd@quicinc.com>
Series	spi: spi-qpic-snand: avoid memory corruption \| expand [v2,0/2] spi: spi-qpic-snand: avoid memory corruption [v2,1/2] spi: spi-qpic-snand: reallocate BAM transactions [v2,2/2] mtd: nand: qpic_common: prevent out of bounds access of BAM arrays

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20250529-qpic-snand-avoid-mem-corruption-v2-0-2f0d13afc7d2@gmail.com

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From: Gabor Juhos <j4g8y7@gmail.com>
Subject: [PATCH v2 0/2] spi: spi-qpic-snand: avoid memory corruption
Date: Thu, 29 May 2025 19:25:09 +0200
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 <20250529-qpic-snand-avoid-mem-corruption-v2-0-2f0d13afc7d2@gmail.com>
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To: Mark Brown <broonie@kernel.org>,
 Md Sadre Alam <quic_mdalam@quicinc.com>,
 Varadarajan Narayanan <quic_varada@quicinc.com>,
 Sricharan Ramabadhran <quic_srichara@quicinc.com>,
 Miquel Raynal <miquel.raynal@bootlin.com>,
 Richard Weinberger <richard@nod.at>, Vignesh Raghavendra <vigneshr@ti.com>
Cc: linux-spi@vger.kernel.org, linux-mtd@lists.infradead.org,
 linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org,
 Gabor Juhos <j4g8y7@gmail.com>, Lakshmi Sowjanya D <quic_laksd@quicinc.com>

Series

spi: spi-qpic-snand: avoid memory corruption | expand

Message

Gabor Juhos May 29, 2025, 5:25 p.m. UTC

The 'spi-qpic-nand' driver may cause memory corruption under some
circumstances. The first patch in the series changes the driver to
avoid that, whereas the second adds some sanity checks to the common
QPIC code in order to make detecting such errors easier in the future.

Preferably, the two patches should go along in via the SPI tree.
It is not a strict requirement though, in the case the second patch
gets included separately through the MTD tree it reveals the bug
which is fixed in the first patch.

Signed-off-by: Gabor Juhos <j4g8y7@gmail.com>
---
Changes in v2:
  - collect offered tags
  - reduce kernel log spam in commit description of patch 1
  - remove inline error printing function from patch 2, and adjust the
    commit message of the patch
  - Link to v1: https://lore.kernel.org/r/20250525-qpic-snand-avoid-mem-corruption-v1-0-5fe528def7fb@gmail.com

---
Gabor Juhos (2):
      spi: spi-qpic-snand: reallocate BAM transactions
      mtd: nand: qpic_common: prevent out of bounds access of BAM arrays

 drivers/mtd/nand/qpic_common.c       | 30 ++++++++++++++++++++++++++----
 drivers/spi/spi-qpic-snand.c         | 16 ++++++++++++++++
 include/linux/mtd/nand-qpic-common.h |  8 ++++++++
 3 files changed, 50 insertions(+), 4 deletions(-)
---
base-commit: b00d6864a4c948529dc6ddd2df76bf175bf27c63
change-id: 20250523-qpic-snand-avoid-mem-corruption-301afabeb0eb

Best regards,