lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <20070921223248.EA24D13DCD@wotan.suse.de>
Date:	Sat, 22 Sep 2007 00:32:48 +0200 (CEST)
From:	Andi Kleen <ak@...e.de>
To:	major@...nvz.org, patches@...-64.org, linux-kernel@...r.kernel.org
Subject: [PATCH] [48/50] x86_64: return correct error code from child_rip in x86_64 entry.S


From: Andrey Mirkin <major@...nvz.org>

Right now register edi is just cleared before calling do_exit.
That is wrong because correct return value will be ignored.
Value from rax should be copied to rdi instead of clearing edi.

AK: changed to 32bit move because it's strictly an int

Signed-off-by: Andrey Mirkin <major@...nvz.org>
Signed-off-by: Andi Kleen <ak@...e.de>

-----

---
 arch/x86_64/kernel/entry.S |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: linux/arch/x86_64/kernel/entry.S
===================================================================
--- linux.orig/arch/x86_64/kernel/entry.S
+++ linux/arch/x86_64/kernel/entry.S
@@ -989,7 +989,7 @@ child_rip:
 	movq %rsi, %rdi
 	call *%rax
 	# exit
-	xorl %edi, %edi
+	mov %eax, %edi
 	call do_exit
 	CFI_ENDPROC
 ENDPROC(child_rip)
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ