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Message-Id: <db8d9cd9aa8846b9395be6af85c1e7713943bcb2.1456308281.git.jslaby@suse.cz> Date: Wed, 24 Feb 2016 11:03:39 +0100 From: Jiri Slaby <jslaby@...e.cz> To: stable@...r.kernel.org Cc: linux-kernel@...r.kernel.org, Helge Deller <deller@....de>, Jiri Slaby <jslaby@...e.cz> Subject: [PATCH 3.12 024/142] parisc: Fix __ARCH_SI_PREAMBLE_SIZE From: Helge Deller <deller@....de> 3.12-stable review patch. If anyone has any objections, please let me know. =============== commit e60fc5aa608eb38b47ba4ee058f306f739eb70a0 upstream. 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@....de> Signed-off-by: Jiri Slaby <jslaby@...e.cz> --- arch/parisc/include/uapi/asm/siginfo.h | 4 ++++ 1 file changed, 4 insertions(+) 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 -- 2.7.1
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