linux-kernel - require EXPORT_SYMBOL_GPL symbols for symbol

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Message-Id: <20230801173544.1929519-1-hch@lst.de>
Date:   Tue,  1 Aug 2023 19:35:39 +0200
From:   Christoph Hellwig <hch@....de>
To:     Luis Chamberlain <mcgrof@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Daniel Mack <daniel@...que.org>,
        Haojian Zhuang <haojian.zhuang@...il.com>,
        Robert Jarzmik <robert.jarzmik@...e.fr>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Manuel Lauss <manuel.lauss@...il.com>,
        Yangbo Lu <yangbo.lu@....com>, Joshua Kinard <kumba@...too.org>
Cc:     Daniel Vetter <daniel.vetter@...ll.ch>,
        Arnd Bergmann <arnd@...db.de>,
        linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org (open list),
        linux-mmc@...r.kernel.org, netdev@...r.kernel.org,
        linux-rtc@...r.kernel.org, linux-modules@...r.kernel.org
Subject: require EXPORT_SYMBOL_GPL symbols for symbol_get v2

Hi all,

this series changes symbol_get to only work on EXPORT_SYMBOL_GPL
as nvidia is abusing the lack of this check to bypass restrictions
on importing symbols from proprietary modules.

Changes since v1:
 - stop using symbol_get for sharpsl_pm.c (Arnd)
 - stop using symbol_get for au1xmmc platform irq handlers
 - better (and simpler) error reporting

Diffstat:
 arch/arm/mach-pxa/sharpsl_pm.c                   |    2 --
 arch/arm/mach-pxa/spitz.c                        |   14 +-------------
 arch/mips/alchemy/devboards/db1000.c             |    8 +-------
 arch/mips/alchemy/devboards/db1200.c             |   19 ++-----------------
 arch/mips/alchemy/devboards/db1300.c             |   10 +---------
 drivers/mmc/host/Kconfig                         |    4 ++--
 drivers/net/ethernet/freescale/enetc/enetc_ptp.c |    2 +-
 drivers/rtc/rtc-ds1685.c                         |    2 +-
 kernel/module/main.c                             |   14 +++++++++++---
 9 files changed, 20 insertions(+), 55 deletions(-)