Patch "ARM: 9351/1: fault: Add "cut here" line for prefetch aborts" has been added to the 5.10-stable tree

Patch "ARM: 9351/1: fault: Add "cut here" line for prefetch aborts" has been added to the 5.10-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    ARM: 9351/1: fault: Add "cut here" line for prefetch aborts

to the 5.10-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     arm-9351-1-fault-add-cut-here-line-for-prefetch-aborts.patch
and it can be found in the queue-5.10 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


From 8f09b8b4fa58e99cbfd9a650b31d65cdbd8e4276 Mon Sep 17 00:00:00 2001
From: Kees Cook <keescook@chromium.org>
Date: Thu, 1 Feb 2024 18:32:23 +0100
Subject: ARM: 9351/1: fault: Add "cut here" line for prefetch aborts

From: Kees Cook <keescook@chromium.org>

commit 8f09b8b4fa58e99cbfd9a650b31d65cdbd8e4276 upstream.

The common pattern in arm is to emit a "8<--- cut here ---" line for
faults, but it was missing for do_PrefetchAbort(). Add it.

Cc: Wang Kefeng <wangkefeng.wang@huawei.com>
Cc: Ben Hutchings <ben@decadent.org.uk>
Cc: linux-arm-kernel@lists.infradead.org
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/arm/mm/fault.c |    1 +
 1 file changed, 1 insertion(+)

--- a/arch/arm/mm/fault.c
+++ b/arch/arm/mm/fault.c
@@ -559,6 +559,7 @@ do_PrefetchAbort(unsigned long addr, uns
 	if (!inf->fn(addr, ifsr | FSR_LNX_PF, regs))
 		return;
 
+	pr_alert("8<--- cut here ---\n");
 	pr_alert("Unhandled prefetch abort: %s (0x%03x) at 0x%08lx\n",
 		inf->name, ifsr, addr);
 


Patches currently in stable-queue which might be from keescook@chromium.org are

queue-5.10/arm-9350-1-fault-implement-copy_from_kernel_nofault_allowed.patch
queue-5.10/arm-9351-1-fault-add-cut-here-line-for-prefetch-aborts.patch