X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=arch%2Fs390%2Fkernel%2Fsignal.c;h=d5b6481532ad3a1fe2538388f18a01fc93c2158a;hb=9bf4aaab3e101692164d49b7ca357651eb691cb6;hp=d32b2c44b71ad86824fb07495a004ca8f0e2d548;hpb=db216c3d5e4c040e557a50f8f5d35d5c415e8c1c;p=linux-2.6.git

diff --git a/arch/s390/kernel/signal.c b/arch/s390/kernel/signal.c
index d32b2c44b..d5b648153 100644
--- a/arch/s390/kernel/signal.c
+++ b/arch/s390/kernel/signal.c
@@ -39,6 +39,7 @@ typedef struct
 	__u8 callee_used_stack[__SIGNAL_FRAMESIZE];
 	struct sigcontext sc;
 	_sigregs sregs;
+	int signo;
 	__u8 retcode[S390_SYSCALL_SIZE];
 } sigframe;
 
@@ -350,6 +351,10 @@ static void setup_frame(int sig, struct k_sigaction *ka,
 	   To avoid breaking binary compatibility, they are passed as args. */
 	regs->gprs[4] = current->thread.trap_no;
 	regs->gprs[5] = current->thread.prot_addr;
+
+	/* Place signal number on stack to allow backtrace from handler.  */
+	if (__put_user(regs->gprs[2], (int __user *) &frame->signo))
+		goto give_sigsegv;
 	return;
 
 give_sigsegv: