On 01/18/18 00:07, Andrew Morton wrote:
On Wed, 17 Jan 2018 11:02:12 +0100 gregkh@linuxfoundation.org wrote:
This is a note to let you know that I've just added the patch titled
tools/objtool/Makefile: don't assume sync-check.sh is executableto the 4.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...
The filename of the patch is: tools-objtool-makefile-don-t-assume-sync-check.sh-is-executable.patch and it can be found in the queue-4.14 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 0f908ccbeca99ddf0ad60afa710e72aded4a5ea7 Mon Sep 17 00:00:00 2001
From: Andrew Morton akpm@linux-foundation.org Date: Fri, 12 Jan 2018 16:53:17 -0800 Subject: tools/objtool/Makefile: don't assume sync-check.sh is executable
From: Andrew Morton akpm@linux-foundation.org
commit 0f908ccbeca99ddf0ad60afa710e72aded4a5ea7 upstream.
patch(1) loses the x bit. So if a user follows our patching instructions in Documentation/admin-guide/README.rst, their kernel will not compile.
Fixes: 3bd51c5a371de ("objtool: Move kernel headers/code sync check to a script") Reported-by: Nicolas Bock nicolasbock@gentoo.org Reported-by Joakim Tjernlund Joakim.Tjernlund@infinera.com Cc: Ingo Molnar mingo@kernel.org Cc: Josh Poimboeuf jpoimboe@redhat.com Signed-off-by: Andrew Morton akpm@linux-foundation.org Signed-off-by: Linus Torvalds torvalds@linux-foundation.org Cc: Holger Hoffstätte holger@applied-asynchrony.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
I'm curious. 3bd51c5a371de wasn't marked for any -stable so why is its fix being merged?
Because some people/distributions/tools download a kernel-4.14 base image and apply a patchset to create the final version (less to download). Using patch to assemble the final version loses the x bit and voila: build error. This patch removes the need for the executable bit, and everyone is happy again.
-h