From: Guo Ren <guo...@linux.alibaba.com> Pick up the patch from the 'Link' made by Mark Rutland. Keep the same with x86, arm, arm64, arc, sh, power.
Link: https://lore.kernel.org/linux-arm-kernel/1499782763-31418-1-git-send-email-mark.rutl...@arm.com/ Signed-off-by: Guo Ren <guo...@linux.alibaba.com> Cc: Mark Rutland <mark.rutl...@arm.com> Cc: Pekka Enberg <penb...@kernel.org> Cc: Palmer Dabbelt <pal...@dabbelt.com> --- arch/riscv/mm/fault.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/arch/riscv/mm/fault.c b/arch/riscv/mm/fault.c index 3c8b9e4..7f5f45b 100644 --- a/arch/riscv/mm/fault.c +++ b/arch/riscv/mm/fault.c @@ -280,8 +280,11 @@ asmlinkage void do_page_fault(struct pt_regs *regs) * signal first. We do not need to release the mmap_lock because it * would already be released in __lock_page_or_retry in mm/filemap.c. */ - if (fault_signal_pending(fault, regs)) + if (fault_signal_pending(fault, regs)) { + if (!user_mode(regs)) + no_context(regs, addr); return; + } if (unlikely((fault & VM_FAULT_RETRY) && (flags & FAULT_FLAG_ALLOW_RETRY))) { flags |= FAULT_FLAG_TRIED; -- 2.7.4
