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-rw-r--r--fs/proc/task_mmu.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index 09228639b83..7366e9d63ce 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -1402,8 +1402,10 @@ static int show_numa_map(struct seq_file *m, void *v, int is_pid)
walk.mm = mm;
pol = get_vma_policy(task, vma, vma->vm_start);
- mpol_to_str(buffer, sizeof(buffer), pol);
+ n = mpol_to_str(buffer, sizeof(buffer), pol);
mpol_cond_put(pol);
+ if (n < 0)
+ return n;
seq_printf(m, "%08lx %s", vma->vm_start, buffer);