AArch64: Fix handling of nocancel syscall failures (#1098327)

glibc-aarch64-fix-handling-of-nocancel-syscall-failures.patch

@@ -0,0 +1,30 @@
+commit a60339aaff82beadea6f580e587d64052cb5e3b8
+Author: Will Newton <will.newton@linaro.org>
+Date:   Mon May 19 14:38:30 2014 +0100
+
+    AArch64: Fix handling of nocancel syscall failures
+    
+    The current code for nocancel syscalls does not do a comparison of
+    the system call return value. This leads to code being generated
+    where the b.cs follows the svc instruction directly without setting
+    the flags on which the branch depends.
+    
+    ChangeLog:
+    
+    2014-05-20  Will Newton  <will.newton@linaro.org>
+    
+    	* sysdeps/unix/sysv/linux/aarch64/nptl/sysdep-cancel.h (PSEUDO):
+    	Test the return value of the system call in the nocancel case.
+
+diff --git a/sysdeps/unix/sysv/linux/aarch64/nptl/sysdep-cancel.h b/sysdeps/unix/sysv/linux/aarch64/nptl/sysdep-cancel.h
+index f6903b5..0e9bef3 100644
+--- a/sysdeps/unix/sysv/linux/aarch64/nptl/sysdep-cancel.h
++++ b/sysdeps/unix/sysv/linux/aarch64/nptl/sysdep-cancel.h
+@@ -32,6 +32,7 @@
+   __##syscall_name##_nocancel:						\
+     cfi_startproc;							\
+     DO_CALL (syscall_name, args);					\
++    cmn x0, 4095;							\
+     PSEUDO_RET;								\
+     cfi_endproc;							\
+     .size __##syscall_name##_nocancel,.-__##syscall_name##_nocancel;	\

glibc.spec

@@ -1,6 +1,6 @@
 %define glibcsrcdir  glibc-2.19-418-ga5d87b3
 %define glibcversion 2.19.90
-%define glibcrelease 15%{?dist}
+%define glibcrelease 16%{?dist}
 # Pre-release tarballs are pulled in from git using a command that is
 # effectively:
 #
@@ -191,7 +191,7 @@ Patch0047: %{name}-nscd-sysconfig.patch
 #
 ##############################################################################
 
-# None!
+Patch1000: %{name}-aarch64-fix-handling-of-nocancel-syscall-failures.patch
 
 ##############################################################################
 #
@@ -553,6 +553,7 @@ package or when debugging this package.
 %patch2031 -p1
 %patch0047 -p1
 %patch2032 -p1
+%patch1000 -p1
 
 ##############################################################################
 # %%prep - Additional prep required...
@@ -1642,6 +1643,9 @@ rm -f *.filelist*
 %endif
 
 %changelog
+* Wed May 21 2014 Kyle McMartin <kyle@fedoraproject.org> - 2.19.90-16
+- AArch64: Fix handling of nocancel syscall failures (#1098327)
+
 * Thu May 15 2014 Siddhesh Poyarekar <siddhesh@redhat.com> - 2.19.90-15
 - Sync with upstream master.