From f6a843d939ade435e060d580f5c56d958464f8a5 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Wed, 26 Mar 2008 04:51:12 -0700 Subject: [PATCH] [SPARC64]: flush_ptrace_access() needs preemption disable. Based upon a report by Mariusz Kozlowski. Signed-off-by: David S. Miller --- arch/sparc64/kernel/ptrace.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/sparc64/kernel/ptrace.c b/arch/sparc64/kernel/ptrace.c index bcf58ece2ba1..aaae865e7932 100644 --- a/arch/sparc64/kernel/ptrace.c +++ b/arch/sparc64/kernel/ptrace.c @@ -70,6 +70,8 @@ void flush_ptrace_access(struct vm_area_struct *vma, struct page *page, if (tlb_type == hypervisor) return; + preempt_disable(); + #ifdef DCACHE_ALIASING_POSSIBLE /* If bit 13 of the kernel address we used to access the * user page is the same as the virtual address that page @@ -108,6 +110,8 @@ void flush_ptrace_access(struct vm_area_struct *vma, struct page *page, for (; start < end; start += icache_line_size) flushi(start); } + + preempt_enable(); } enum sparc_regset { -- 2.20.1