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-rw-r--r--mm/mmap.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/mm/mmap.c b/mm/mmap.c
index ca12a9308436..2ae093ed2cac 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -2068,6 +2068,9 @@ void exit_mmap(struct mm_struct *mm)
arch_exit_mmap(mm);
mmu_notifier_release(mm);
+ if (!mm->mmap) /* Can happen if dup_mmap() received an OOM */
+ return;
+
lru_add_drain();
flush_cache_mm(mm);
tlb = tlb_gather_mmu(mm, 1);