linux-kernel - [PATCH 6.1 1/1] x86/modules: Set VM_FLUSH_RESET_PERMS in module

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Message-ID: <682f15c4.170a0220.3893a.e498@mx.google.com>
Date: Thu, 22 May 2025 14:17:06 +0200
From: Jack Wang <jinpu.wang@...os.com>
To: pchelkin@...ras.ru,
	Pawan Gupta <pawan.kumar.gupta@...ux.intel.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org
Cc: bp@...en8.de,
	dave.hansen@...ux.intel.com,
	linux-kernel@...r.kernel.org,
	lvc-project@...uxtesting.org,
	mark.rutland@....com,
	mhiramat@...nel.org,
	mingo@...hat.com,
	peterz@...radead.org,
	rostedt@...dmis.org,
	rppt@...nel.org,
	tglx@...utronix.de,
	x86@...nel.org
Subject: [PATCH 6.1 1/1] x86/modules: Set VM_FLUSH_RESET_PERMS in module_alloc()

From: Fedor Pchelkin <pchelkin@...ras.ru>

From: Thomas Gleixner <tglx@...utronix.de>

commit 4c4eb3ecc91f4fee6d6bf7cfbc1e21f2e38d19ff upstream.

Instead of resetting permissions all over the place when freeing module
memory tell the vmalloc code to do so. Avoids the exercise for the next
upcoming user.

Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Link: https://lore.kernel.org/r/20220915111143.406703869@infradead.org
Signed-off-by: Fedor Pchelkin <pchelkin@...ras.ru>

I confirm this patch fixed the random crashing ontop of 6.1.139 I've experienced
on our Icelake and Cascadelake servers, servers are working fine after appling
the fix, thx!

Tested-by: Jack Wang <jinpu.wang@...os.com>