From: Al Viro <viro@ftp.linux.org.uk>
Date: Mon, 20 Sep 2010 14:13:14 +0000 (+0100)
Subject: frv: avoid infinite loop of SIGSEGV delivery
X-Git-Tag: v3.12-rc1~8678
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=ad0acab4557a91a60251b3ffe3478fad572d6f61;p=kernel%2Fkernel-generic.git

frv: avoid infinite loop of SIGSEGV delivery

Use force_sigsegv() rather than force_sig(SIGSEGV, ...) as the former
resets the SEGV handler pointer which will kill the process, rather than
leaving it open to an infinite loop if the SEGV handler itself caused a
SEGV signal.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/arch/frv/kernel/signal.c b/arch/frv/kernel/signal.c
index 5fb2d06..48203c6 100644
--- a/arch/frv/kernel/signal.c
+++ b/arch/frv/kernel/signal.c
@@ -329,7 +329,7 @@ static int setup_frame(int sig, struct k_sigaction *ka, sigset_t *set)
 	return 0;
 
 give_sigsegv:
-	force_sig(SIGSEGV, current);
+	force_sigsegv(sig, current);
 	return -EFAULT;
 
 } /* end setup_frame() */
@@ -431,7 +431,7 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
 	return 0;
 
 give_sigsegv:
-	force_sig(SIGSEGV, current);
+	force_sigsegv(sig, current);
 	return -EFAULT;
 
 } /* end setup_rt_frame() */