glibc: disable rseq feature by default with tunable

disable rseq feature by default with tunable

Signed-off-by: qinyu <qinyu16@huawei.com>

glibc.spec

@@ -66,7 +66,7 @@
 ##############################################################################
 Name: 	 	glibc
 Version: 	2.34
-Release: 	66
+Release: 	67
 Summary: 	The GNU libc libraries
 License:	%{all_license}
 URL: 		http://www.gnu.org/software/glibc/
@@ -1289,6 +1289,9 @@ fi
 %endif
 
 %changelog
+* Thu Mar 3 2022 qinyu <qinyu16@huawei.com> - 2.34-67
+- disable rseq by default with tunable
+
 * Thu Mar 3 2022 Yunfeng Ye <yeyunfeng@huawei.com> - 2.34-66
 - add PTRACE_GET_RSEQ_CONFIGURATION
 

rseq-nptl-Add-glibc.pthread.rseq-tunable-to-control-rseq-.patch

@@ -9,6 +9,14 @@ of glibc.
 
 Reviewed-by: Szabolcs Nagy <szabolcs.nagy@arm.com>
 Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
+-----
+change:
+Since rseq is a big feature and have changed code behavior quite a lot,
+disable rseq by default to reduce potential conflicts.
+
+sysdeps/nptl/dl-tunables.list:
+	default: 1   ->  default: 0
+
 ---
  manual/tunables.texi                       | 10 +++
  nptl/pthread_create.c                      | 10 ++-
@@ -111,7 +119,7 @@ index ac5d0532..d24f4be0 100644
 +      type: INT_32
 +      minval: 0
 +      maxval: 1
-+      default: 1
++      default: 0
 +    }
    }
  }

testsuite_whitelist

@@ -123,3 +123,7 @@ elf/tst-debug1:aarch64
 # This test case often fails in CI which is the high-pressure environment.
 # No better solution is available. This test case is shielded.
 rt/tst-cpuclock2
+
+# These testcase fails because rseq is disabled by default
+misc/tst-rseq-nptl
+misc/tst-rseq