linux-kernel - [PATCH] broken TASK_SIZE for ia32

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Message-ID: <20120506162000.GT6871@ZenIV.linux.org.uk>
Date:	Sun, 6 May 2012 17:20:00 +0100
From:	Al Viro <viro@...IV.linux.org.uk>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	linux-kernel@...r.kernel.org, "H. Peter Anvin" <hpa@...or.com>
Subject: [PATCH] broken TASK_SIZE for ia32_aout

Setting TIF_IA32 in load_aout_binary() used to be enough; these days
TASK_SIZE is controlled by TIF_ADDR32 and that one doesn't get set
there.  Switch to use of set_personality_ia32()...

Signed-off-by: Al Viro <viro@...iv.linux.org.uk>
---
diff --git a/arch/x86/ia32/ia32_aout.c b/arch/x86/ia32/ia32_aout.c
index 4824fb4..07b3a68 100644
--- a/arch/x86/ia32/ia32_aout.c
+++ b/arch/x86/ia32/ia32_aout.c
@@ -294,8 +294,7 @@ static int load_aout_binary(struct linux_binprm *bprm, struct pt_regs *regs)

 	/* OK, This is the point of no return */
 	set_personality(PER_LINUX);
-	set_thread_flag(TIF_IA32);
-	current->mm->context.ia32_compat = 1;
+	set_personality_ia32(false);

 	setup_new_exec(bprm);

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