From ada44a0430fdd00b3f38aad0aa518e97cb760bd0 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Wed, 21 May 2008 21:50:01 -0700 Subject: [PATCH] sparc64: Prevent stack backtrace false positives on trap frames. When we fully commit to returning back to kernel mode from a trap, zero out the regs->magic value to prevent false positives during stack backtraces. Signed-off-by: David S. Miller --- arch/sparc64/kernel/rtrap.S | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/sparc64/kernel/rtrap.S b/arch/sparc64/kernel/rtrap.S index 3afacbb578..c6fc695fe1 100644 --- a/arch/sparc64/kernel/rtrap.S +++ b/arch/sparc64/kernel/rtrap.S @@ -363,6 +363,7 @@ kern_rtt: rdpr %canrestore, %g1 brz,pn %g1, kern_rtt_fill nop kern_rtt_restore: + stw %g0, [%sp + PTREGS_OFF + PT_V9_MAGIC] restore retry -- 2.39.5