diff options
| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-01-28 08:17:02 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-01-28 08:17:02 +0100 |
| commit | d61b5d546af21e886aafcc9182f5ac5935a3177d (patch) | |
| tree | 448b389768a74efb604dd22ea2a5d43686ea3be5 /arch/arc/mm/fault.c | |
| parent | 94832d93992176b7c37672e1fc7b7acc16e70286 (diff) | |
| parent | f17b5f06cb92ef2250513a1e154c47b78df07d40 (diff) | |
Merge 5.0-rc4 into staging-next
We need the staging fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/arc/mm/fault.c')
| -rw-r--r-- | arch/arc/mm/fault.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/arch/arc/mm/fault.c b/arch/arc/mm/fault.c index a1d723197084..8df1638259f3 100644 --- a/arch/arc/mm/fault.c +++ b/arch/arc/mm/fault.c @@ -141,12 +141,17 @@ good_area: */ fault = handle_mm_fault(vma, address, flags); - /* If Pagefault was interrupted by SIGKILL, exit page fault "early" */ if (fatal_signal_pending(current)) { - if ((fault & VM_FAULT_ERROR) && !(fault & VM_FAULT_RETRY)) - up_read(&mm->mmap_sem); - if (user_mode(regs)) + + /* + * if fault retry, mmap_sem already relinquished by core mm + * so OK to return to user mode (with signal handled first) + */ + if (fault & VM_FAULT_RETRY) { + if (!user_mode(regs)) + goto no_context; return; + } } perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, regs, address); |