commit dffead4e421e289c8434351400d24fd35723e874
author Jan Beulich <jbeulich@novell.com> Mon Jun 26 13:57:38 2006 +0200
committer Linus Torvalds <torvalds@g5.osdl.org> Mon Jun 26 10:48:17 2006 -0700
tree 8b95fac885640f1abfa4b67758b3fb6a521e061a
parent 1de9c3f67ec6fddfb85325bab551f4094f55f410

[PATCH] x86_64: reliable stack trace support (x86-64 syscall

Adjust the CFA offset for 64- and 32-bit syscall entries so that the five
slots pre-subtracted from the stack pointer do not appear to reside outside
of the current frame.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/x86_64/ia32/ia32entry.S

diff --git a/arch/x86_64/ia32/ia32entry.S b/arch/x86_64/ia32/ia32entry.S
index d073ca3..222777b 100644
--- a/arch/x86_64/ia32/ia32entry.S
+++ b/arch/x86_64/ia32/ia32entry.S
@@ -179,7 +179,7 @@
  */ 	
 ENTRY(ia32_cstar_target)
 	CFI_STARTPROC32	simple
-	CFI_DEF_CFA	rsp,0
+	CFI_DEF_CFA	rsp,PDA_STACKOFFSET
 	CFI_REGISTER	rip,rcx
 	/*CFI_REGISTER	rflags,r11*/
 	swapgs

arch/x86_64/kernel/entry.S

diff --git a/arch/x86_64/kernel/entry.S b/arch/x86_64/kernel/entry.S
index 4f407ef..7290e72 100644
--- a/arch/x86_64/kernel/entry.S
+++ b/arch/x86_64/kernel/entry.S
@@ -189,7 +189,7 @@
 
 ENTRY(system_call)
 	CFI_STARTPROC	simple
-	CFI_DEF_CFA	rsp,0
+	CFI_DEF_CFA	rsp,PDA_STACKOFFSET
 	CFI_REGISTER	rip,rcx
 	/*CFI_REGISTER	rflags,r11*/
 	swapgs