diff options
| author | David S. Miller <davem@davemloft.net> | 2008-04-07 00:26:11 -0700 |
|---|---|---|
| committer | Chris Wright <chrisw@sous-sol.org> | 2008-04-18 18:53:27 -0700 |
| commit | 3923d91d2ade70e9fcfe22aa965710ff8a2ae535 (patch) | |
| tree | deb3820c7ad2699960bbbd039a60a3e9e2ca1bc2 | |
| parent | 8b337d60a526f4461d681cd537d6b0f2d176f0ad (diff) | |
SPARC64: flush_ptrace_access() needs preemption disable.
Upstream commit: f6a843d939ade435e060d580f5c56d958464f8a5
Based upon a report by Mariusz Kozlowski.
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
| -rw-r--r-- | arch/sparc64/kernel/ptrace.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/sparc64/kernel/ptrace.c b/arch/sparc64/kernel/ptrace.c index 81111a12f0a8..d4af13166ef8 100644 --- a/arch/sparc64/kernel/ptrace.c +++ b/arch/sparc64/kernel/ptrace.c @@ -127,6 +127,8 @@ 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 @@ -165,6 +167,8 @@ void flush_ptrace_access(struct vm_area_struct *vma, struct page *page, for (; start < end; start += icache_line_size) flushi(start); } + + preempt_enable(); } asmlinkage void do_ptrace(struct pt_regs *regs) |