[PATCH] x86_64: Don't do syscall exit tracing twice

int_ret_from_syscall already does syscall exit tracing, so
no need to do it again in the caller.

This caused problems for UML and some other special programs doing
syscall interception.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/arch/x86_64/kernel/entry.S b/arch/x86_64/kernel/entry.S
index c946e4fe67a7937ab15eba697246602c7dc67dbd..586b34c00c489a2d3d495a904c00b158a1abfba4 100644 (file)
--- a/arch/x86_64/kernel/entry.S
+++ b/arch/x86_64/kernel/entry.S
@@ -281,12 +281,7 @@ tracesys:
        ja  1f
        movq %r10,%rcx  /* fixup for C */
        call *sys_call_table(,%rax,8)
-       movq %rax,RAX-ARGOFFSET(%rsp)
-1:     SAVE_REST
-       movq %rsp,%rdi
-       call syscall_trace_leave
-       RESTORE_TOP_OF_STACK %rbx
-       RESTORE_REST
+1:     movq %rax,RAX-ARGOFFSET(%rsp)
        /* Use IRET because user could have changed frame */
        jmp int_ret_from_sys_call
        CFI_ENDPROC