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| author | Helge Deller <deller@gmx.de> | 2016-01-10 09:30:42 +0100 |
|---|---|---|
| committer | Helge Deller <deller@gmx.de> | 2016-01-12 22:04:09 +0100 |
| commit | e60fc5aa608eb38b47ba4ee058f306f739eb70a0 (patch) | |
| tree | fc2a6b53a7389728f818995d150da40a17ca541c /arch/parisc | |
| parent | parisc: Reduce overhead of parisc_requires_coherency() (diff) | |
| download | linux-e60fc5aa608eb38b47ba4ee058f306f739eb70a0.tar.xz linux-e60fc5aa608eb38b47ba4ee058f306f739eb70a0.zip | |
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')
| -rw-r--r-- | arch/parisc/include/uapi/asm/siginfo.h | 4 |
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 |