linux-hardening - Re: [PATCH] pstore: replace spinlock_t by raw_spinlock

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Message-Id: <172470445402.1124964.5756101166185708381.b4-ty@kernel.org>
Date: Mon, 26 Aug 2024 13:34:16 -0700
From: Kees Cook <kees@...nel.org>
To: Tony Luck <tony.luck@...el.com>,
	"Guilherme G. Piccoli" <gpiccoli@...lia.com>,
	Wen Yang <wen.yang@...ux.dev>
Cc: Kees Cook <kees@...nel.org>,
	linux-hardening@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] pstore: replace spinlock_t by raw_spinlock_t

On Mon, 19 Aug 2024 22:59:45 +0800, Wen Yang wrote:
> pstore_dump() is called when both preemption and local IRQ are disabled,
> and a spinlock is obtained, which is problematic for the RT kernel because
> in this configuration, spinlocks are sleep locks.
> 
> Replace the spinlock_t with raw_spinlock_t to avoid sleeping in atomic context.
> 
> 
> [...]

Applied to for-next/pstore, thanks!

[1/1] pstore: replace spinlock_t by raw_spinlock_t
      https://git.kernel.org/kees/c/1bf8012fc699

Take care,

-- 
Kees Cook