From e26db7ad9c319496bcbe6043d9d4e1d1da3ec613 Mon Sep 17 00:00:00 2001 From: Guo Ren Date: Wed, 30 Dec 2020 10:06:22 +0000 Subject: csky: mm: abort uaccess retries upon fatal signal 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.rutland@arm.com/ Signed-off-by: Guo Ren Cc: Mark Rutland --- arch/csky/mm/fault.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'arch/csky') diff --git a/arch/csky/mm/fault.c b/arch/csky/mm/fault.c index c7b67976bac4..1482de56f4f7 100644 --- a/arch/csky/mm/fault.c +++ b/arch/csky/mm/fault.c @@ -279,8 +279,11 @@ good_area: * 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; -- cgit v1.2.3