From: Mark Brown <broonie@kernel.org>
To: Sasha Levin <sashal@kernel.org>
Cc: linux-kernel@vger.kernel.org, stable@vger.kernel.org,
Bartosz Golaszewski <bartosz.golaszewski@linaro.org>,
linux-spi@vger.kernel.org
Subject: Re: [PATCH AUTOSEL 5.10 11/17] spi: spidev: fix a race condition when accessing spidev->spi
Date: Mon, 16 Jan 2023 14:40:05 +0000 [thread overview]
Message-ID: <Y8VhxYxMjwtu12k2@sirena.org.uk> (raw)
In-Reply-To: <20230116140448.116034-11-sashal@kernel.org>
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On Mon, Jan 16, 2023 at 09:04:42AM -0500, Sasha Levin wrote:
> From: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
>
> [ Upstream commit a720416d94634068951773cb9e9d6f1b73769e5b ]
>
> There's a spinlock in place that is taken in file_operations callbacks
> whenever we check if spidev->spi is still alive (not null). It's also
> taken when spidev->spi is set to NULL in remove().
There are ongoing discussions of race conditions with this commit.
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next prev parent reply other threads:[~2023-01-16 14:53 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-16 14:04 [PATCH AUTOSEL 5.10 01/17] scsi: iscsi: Fix multiple iSCSI session unbind events sent to userspace Sasha Levin
2023-01-16 14:04 ` [PATCH AUTOSEL 5.10 02/17] cpufreq: Add Tegra234 to cpufreq-dt-platdev blocklist Sasha Levin
2023-01-16 14:04 ` [PATCH AUTOSEL 5.10 03/17] kcsan: test: don't put the expect array on the stack Sasha Levin
2023-01-16 14:04 ` [PATCH AUTOSEL 5.10 04/17] ASoC: fsl_micfil: Correct the number of steps on SX controls Sasha Levin
2023-01-16 14:04 ` [PATCH AUTOSEL 5.10 05/17] drm: Add orientation quirk for Lenovo ideapad D330-10IGL Sasha Levin
2023-01-16 14:04 ` [PATCH AUTOSEL 5.10 06/17] s390/debug: add _ASM_S390_ prefix to header guard Sasha Levin
2023-01-16 14:04 ` [PATCH AUTOSEL 5.10 07/17] arm64/mm: Define dummy pud_user_exec() when using 2-level page-table Sasha Levin
2023-01-16 14:04 ` [PATCH AUTOSEL 5.10 08/17] cpufreq: armada-37xx: stop using 0 as NULL pointer Sasha Levin
2023-01-16 14:04 ` [PATCH AUTOSEL 5.10 09/17] ASoC: fsl_ssi: Rename AC'97 streams to avoid collisions with AC'97 CODEC Sasha Levin
2023-01-16 14:04 ` [PATCH AUTOSEL 5.10 10/17] ASoC: fsl-asoc-card: Fix naming of AC'97 CODEC widgets Sasha Levin
2023-01-16 14:04 ` [PATCH AUTOSEL 5.10 11/17] spi: spidev: fix a race condition when accessing spidev->spi Sasha Levin
2023-01-16 14:40 ` Mark Brown [this message]
2023-01-23 0:59 ` Sasha Levin
2023-01-16 14:04 ` [PATCH AUTOSEL 5.10 12/17] spi: spidev: remove debug messages that access spidev->spi without locking Sasha Levin
2023-01-16 14:04 ` [PATCH AUTOSEL 5.10 13/17] KVM: s390: interrupt: use READ_ONCE() before cmpxchg() Sasha Levin
2023-01-16 14:04 ` [PATCH AUTOSEL 5.10 14/17] scsi: hisi_sas: Set a port invalid only if there are no devices attached when refreshing port id Sasha Levin
2023-01-16 14:04 ` [PATCH AUTOSEL 5.10 15/17] platform/x86: touchscreen_dmi: Add info for the CSL Panther Tab HD Sasha Levin
2023-01-16 14:04 ` [PATCH AUTOSEL 5.10 16/17] platform/x86: asus-nb-wmi: Add alternate mapping for KEY_SCREENLOCK Sasha Levin
2023-01-16 14:04 ` [PATCH AUTOSEL 5.10 17/17] lockref: stop doing cpu_relax in the cmpxchg loop Sasha Levin
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