linux-kernel - Re: [PATCH 5.10 00/59] 5.10.223-rc1 review

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Message-ID: <93RnVgeI76u-tf0ZRdROl_JVVqqx-rtQnV4mOqGR_Rb5OmiWCMXC6MSYfnkTPp_615nKq8H-5nfzNt4I9MXPjUPzXBLp625jtGUJSGPsGBo=@protonmail.com>
Date: Fri, 26 Jul 2024 09:53:18 +0000
From: Jari Ruusu <jariruusu@...tonmail.com>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "stable@...r.kernel.org" <stable@...r.kernel.org>
Subject: Re: [PATCH 5.10 00/59] 5.10.223-rc1 review

On Friday, July 26th, 2024 at 11:52, Greg Kroah-Hartman <gregkh@...uxfoundation.org> wrote:
> Also the "Fixes:" tag is not in the correct format, please fix that up
> at the very least.

Some older systems still compile kernels with old gcc version.
These warnings and errors show up when compiling with gcc 4.9.2

 error: "__GCC4_has_attribute___uninitialized__" is not defined [-Werror=undef]

Following patch fixes this. Upstream won't need this because  
newer kernels are not compilable with gcc 4.9.

Subject: gcc-4.9 warning/error fix for 5.10.223-rc1
Fixes: fd7eea27a3ae ("Compiler Attributes: Add __uninitialized macro")
Signed-off-by: Jari Ruusu <jariruusu@...tonmail.com>

--- ./include/linux/compiler_attributes.h.OLD
+++ ./include/linux/compiler_attributes.h
@@ -37,6 +37,7 @@
 # define __GCC4_has_attribute___nonstring__           0
 # define __GCC4_has_attribute___no_sanitize_address__ (__GNUC_MINOR__ >= 8)
 # define __GCC4_has_attribute___no_sanitize_undefined__ (__GNUC_MINOR__ >= 9)
+# define __GCC4_has_attribute___uninitialized__       0
 # define __GCC4_has_attribute___fallthrough__         0
 # define __GCC4_has_attribute___warning__             1
 #endif

--
Jari Ruusu  4096R/8132F189 12D6 4C3A DCDA 0AA4 27BD  ACDF F073 3C80 8132 F189