From: Eric W. Biederman <ebiederm@xmission.com>
Date: Thu, 20 Jul 2017 02:23:15 +0000 (-0500)
Subject: signal: Ensure no siginfo union member increases the size of struct siginfo
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=aba1be2f8c26ea322dd9c43047c1aff90528f032;p=linux.git

signal: Ensure no siginfo union member increases the size of struct siginfo

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
---

diff --git a/kernel/signal.c b/kernel/signal.c
index 241d54958bbbc..b9e5d825ee462 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -3688,6 +3688,7 @@ void __init signals_init(void)
 	/* If this check fails, the __ARCH_SI_PREAMBLE_SIZE value is wrong! */
 	BUILD_BUG_ON(__ARCH_SI_PREAMBLE_SIZE
 		!= offsetof(struct siginfo, _sifields._pad));
+	BUILD_BUG_ON(sizeof(struct siginfo) != SI_MAX_SIZE);
 
 	sigqueue_cachep = KMEM_CACHE(sigqueue, SLAB_PANIC);
 }