import numactl-2.0.12-13.el8

SOURCES/0013-libnuma-make-numa_police_memory-free-of-race.patch

@@ -0,0 +1,35 @@
+From 93867c59b0bb29470873a427dc7f06ebaf305221 Mon Sep 17 00:00:00 2001
+From: Pingfan Liu <piliu@redhat.com>
+Date: Mon, 29 Mar 2021 17:33:06 +0800
+Subject: [PATCH] libnuma: make numa_police_memory() free of race
+
+When numa_police_memory() read-write to memory, it can risk the race of
+another thread write to the same area.
+
+Using atomic function to protect the read-write operation
+
+Signed-off-by: Pingfan Liu <piliu@redhat.com>
+---
+ libnuma.c | 6 ++++--
+ 1 file changed, 4 insertions(+), 2 deletions(-)
+
+diff --git a/libnuma.c b/libnuma.c
+index f073c50..7b8290c 100644
+--- a/libnuma.c
++++ b/libnuma.c
+@@ -864,8 +864,10 @@ void numa_police_memory(void *mem, size_t size)
+ {
+ 	int pagesize = numa_pagesize_int();
+ 	unsigned long i;
+-	for (i = 0; i < size; i += pagesize)
+-        ((volatile char*)mem)[i] = ((volatile char*)mem)[i];
++	char *p = mem;
++	for (i = 0; i < size; i += pagesize, p += pagesize)
++		__atomic_and_fetch(p, 0xff, __ATOMIC_RELAXED);
++
+ }
+ 
+ make_internal_alias(numa_police_memory);
+-- 
+2.29.2
+

SPECS/numactl.spec

@@ -1,7 +1,7 @@
 Name:		numactl
 Summary:	Library for tuning for Non Uniform Memory Access machines
 Version:	2.0.12
-Release:	11%{?dist}
+Release:	13%{?dist}
 # libnuma is LGPLv2 and GPLv2
 # numactl binaries are GPLv2 only
 License:	GPLv2
@@ -49,6 +49,7 @@ Patch609: 0009-numastat.8-clarify-that-information-relates-to-resid.patch
 Patch610: 0010-Fix-crashes-when-using-the-touch-option.patch
 Patch611: 0011-Added-memhog.8-to-Makefile.am.patch 
 Patch612: 0012-Update-manpage-description-of-localalloc-option.patch
+Patch613: 0013-libnuma-make-numa_police_memory-free-of-race.patch
 
 
 
@@ -91,6 +92,7 @@ Provides development headers for numa library calls
 %patch610 -p1
 %patch611 -p1
 %patch612 -p1
+%patch613 -p1
 
 
 %build
@@ -136,6 +138,9 @@ make DESTDIR=$RPM_BUILD_ROOT install
 %{_mandir}/man3/*.3*
 
 %changelog
+* Wed May 12 2021 Pingfan Liu <piliu@redhat.com> - 2.0.12-13
+- libnuma: make numa_police_memory() free of race
+
 * Sat May  9 2020 Pingfan Liu <piliu@redhat.com> - 2.0.12-11
 - Update manpage description of --localalloc option