[PATCH 4.5 003/124] parisc: Fix SIGSYS signals in compat case

[Greg Kroah-Hartman]

4.5-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Helge Deller <del...@gmx.de>

commit 4f4acc9472e54ce702f1d85fc9e6d57767dec91f upstream.

Signed-off-by: Helge Deller <del...@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>

---
 arch/parisc/include/asm/compat.h |    7 +++++++
 arch/parisc/kernel/signal32.c    |    5 +++++
 2 files changed, 12 insertions(+)

--- a/arch/parisc/include/asm/compat.h
+++ b/arch/parisc/include/asm/compat.h
@@ -183,6 +183,13 @@ typedef struct compat_siginfo {
                        int _band;      /* POLL_IN, POLL_OUT, POLL_MSG */
                        int _fd;
                } _sigpoll;
+
+               /* SIGSYS */
+               struct {
+                       compat_uptr_t _call_addr; /* calling user insn */
+                       int _syscall;   /* triggering system call number */
+                       compat_uint_t _arch;    /* AUDIT_ARCH_* of syscall */
+               } _sigsys;
        } _sifields;
 } compat_siginfo_t;
 
--- a/arch/parisc/kernel/signal32.c
+++ b/arch/parisc/kernel/signal32.c
@@ -371,6 +371,11 @@ copy_siginfo_to_user32 (compat_siginfo_t
                        val = (compat_int_t)from->si_int;
                        err |= __put_user(val, &to->si_int);
                        break;
+               case __SI_SYS >> 16:
+                       err |= __put_user(ptr_to_compat(from->si_call_addr), 
&to->si_call_addr);
+                       err |= __put_user(from->si_syscall, &to->si_syscall);
+                       err |= __put_user(from->si_arch, &to->si_arch);
+                       break;
                }
        }
        return err;