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authorHelge Deller <deller@gmx.de>2016-01-10 09:30:42 +0100
committerHelge Deller <deller@gmx.de>2016-01-12 22:04:09 +0100
commite60fc5aa608eb38b47ba4ee058f306f739eb70a0 (patch)
treefc2a6b53a7389728f818995d150da40a17ca541c /arch/parisc/include
parentfc6325750348272d10a8e39adb9fc0e89a667774 (diff)
downloadlinux-e60fc5aa608eb38b47ba4ee058f306f739eb70a0.tar.gz
parisc: Fix __ARCH_SI_PREAMBLE_SIZE
On a 64bit kernel build the compiler aligns the _sifields union in the struct siginfo_t on a 64bit address. The __ARCH_SI_PREAMBLE_SIZE define compensates for this alignment and thus fixes the wait testcase of the strace package. The symptoms of a wrong __ARCH_SI_PREAMBLE_SIZE value is that _sigchld.si_stime variable is missed to be copied and thus after a copy_siginfo() will have uninitialized values. Signed-off-by: Helge Deller <deller@gmx.de> Cc: stable@vger.kernel.org
Diffstat (limited to 'arch/parisc/include')
-rw-r--r--arch/parisc/include/uapi/asm/siginfo.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/parisc/include/uapi/asm/siginfo.h b/arch/parisc/include/uapi/asm/siginfo.h
index d7034728f377..1c75565d984b 100644
--- a/arch/parisc/include/uapi/asm/siginfo.h
+++ b/arch/parisc/include/uapi/asm/siginfo.h
@@ -1,6 +1,10 @@
#ifndef _PARISC_SIGINFO_H
#define _PARISC_SIGINFO_H
+#if defined(__LP64__)
+#define __ARCH_SI_PREAMBLE_SIZE (4 * sizeof(int))
+#endif
+
#include <asm-generic/siginfo.h>
#undef NSIGTRAP