1 files changed, 48 insertions, 0 deletions

diff --git a/meta/recipes-devtools/qemu/qemu/0012-util-cacheinfo-fix-crash-when-compiling-with-uClibc.patch b/meta/recipes-devtools/qemu/qemu/0012-util-cacheinfo-fix-crash-when-compiling-with-uClibc.patch
new file mode 100644
index 0000000000..741a4fce0e
--- /dev/null
+++ b/meta/recipes-devtools/qemu/qemu/0012-util-cacheinfo-fix-crash-when-compiling-with-uClibc.patch
@@ -0,0 +1,48 @@
+From 00b5032eaddb7193f03f0a28b10286244d2e2a7b Mon Sep 17 00:00:00 2001
+From: Carlos Santos <casantos@redhat.com>
+Date: Thu, 17 Oct 2019 09:37:13 -0300
+Subject: [PATCH 1/1] util/cacheinfo: fix crash when compiling with uClibc
+
+uClibc defines _SC_LEVEL1_ICACHE_LINESIZE and _SC_LEVEL1_DCACHE_LINESIZE
+but the corresponding sysconf calls returns -1, which is a valid result,
+meaning that the limit is indeterminate.
+
+Handle this situation using the fallback values instead of crashing due
+to an assertion failure.
+
+Signed-off-by: Carlos Santos <casantos@redhat.com>
+Message-Id: <20191017123713.30192-1-casantos@redhat.com>
+Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
+
+Upstream-status: Backport
+Signed-off-by: Andrei Gherzan <andrei.gherzan@huawei.com>
+---
+ util/cacheinfo.c | 10 ++++++++--
+ 1 file changed, 8 insertions(+), 2 deletions(-)
+
+diff --git a/util/cacheinfo.c b/util/cacheinfo.c
+index ea6f3e99bf..d94dc6adc8 100644
+--- a/util/cacheinfo.c
++++ b/util/cacheinfo.c
+@@ -93,10 +93,16 @@ static void sys_cache_info(int *isize, int *dsize)
+ static void sys_cache_info(int *isize, int *dsize)
+ {
+ # ifdef _SC_LEVEL1_ICACHE_LINESIZE
+-    *isize = sysconf(_SC_LEVEL1_ICACHE_LINESIZE);
++    int tmp_isize = (int) sysconf(_SC_LEVEL1_ICACHE_LINESIZE);
++    if (tmp_isize > 0) {
++        *isize = tmp_isize;
++    }
+ # endif
+ # ifdef _SC_LEVEL1_DCACHE_LINESIZE
+-    *dsize = sysconf(_SC_LEVEL1_DCACHE_LINESIZE);
++    int tmp_dsize = (int) sysconf(_SC_LEVEL1_DCACHE_LINESIZE);
++    if (tmp_dsize > 0) {
++        *dsize = tmp_dsize;
++    }
+ # endif
+ }
+ #endif /* sys_cache_info */
+-- 
+2.30.1
+