sparc64: exit_group should kill register windows just like plain exit.
Reported-by: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc/kernel/syscalls.S b/arch/sparc/kernel/syscalls.S
index 7f5f65d..bf23477 100644
--- a/arch/sparc/kernel/syscalls.S
+++ b/arch/sparc/kernel/syscalls.S
@@ -118,10 +118,20 @@
ba,pt %xcc, ret_sys_call
ldx [%sp + PTREGS_OFF + PT_V9_I0], %o0
+ .globl sparc_exit_group
+ .type sparc_exit_group,#function
+sparc_exit_group:
+ sethi %hi(sys_exit_group), %g7
+ ba,pt %xcc, 1f
+ or %g7, %lo(sys_exit_group), %g7
+ .size sparc_exit_group,.-sparc_exit_group
+
.globl sparc_exit
.type sparc_exit,#function
sparc_exit:
- rdpr %pstate, %g2
+ sethi %hi(sys_exit), %g7
+ or %g7, %lo(sys_exit), %g7
+1: rdpr %pstate, %g2
wrpr %g2, PSTATE_IE, %pstate
rdpr %otherwin, %g1
rdpr %cansave, %g3
@@ -129,7 +139,7 @@
wrpr %g3, 0x0, %cansave
wrpr %g0, 0x0, %otherwin
wrpr %g2, 0x0, %pstate
- ba,pt %xcc, sys_exit
+ jmpl %g7, %g0
stb %g0, [%g6 + TI_WSAVED]
.size sparc_exit,.-sparc_exit