iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

parisc: Fix __ARCH_SI_PREAMBLE_SIZE

Browse Source 
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@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Helge Deller 2016-01-10 09:30:42 +01:00 committed by Greg Kroah-Hartman
parent 583097a3b2
commit 702ea6de71
1 changed files with 4 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
arch/parisc/include/uapi/asm/siginfo.h
View File

@ -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