Commit 06f3f764 authored by Guo Ren's avatar Guo Ren

csky: Add faulthandler_disabled() check

Similar to other architectures:
In addition to in_atomic, we also need pagefault_disabled() to
check.
Signed-off-by: default avatarGuo Ren <guoren@linux.alibaba.com>
parent 3e455cf5
......@@ -143,12 +143,11 @@ asmlinkage void do_page_fault(struct pt_regs *regs)
return;
}
perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, regs, address);
/*
* If we're in an interrupt or have no user
* context, we must not take the fault..
*/
if (in_atomic() || !mm)
if (unlikely(faulthandler_disabled() || !mm))
goto bad_area_nosemaphore;
if (user_mode(regs))
......@@ -157,6 +156,7 @@ asmlinkage void do_page_fault(struct pt_regs *regs)
if (is_write(regs))
flags |= FAULT_FLAG_WRITE;
perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, regs, address);
retry:
mmap_read_lock(mm);
vma = find_vma(mm, address);
......
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