neigh_stat_seq_next() should increase position index

if seq_file .next fuction does not change position index, read after some lseek can generate unexpected output. https://bugzilla.kernel.org/show_bug.cgi?id=206283 Signed-off-by: Vasily Averin <[email protected]> Signed-off-by: David S. Miller <[email protected]>
jbg · Jan 24, 2020 · 1e3f9f0 · 1e3f9f0
1 parent 8bf7092
commit 1e3f9f0
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/net/core/neighbour.c b/net/core/neighbour.c
@@ -3290,6 +3290,7 @@ static void *neigh_stat_seq_next(struct seq_file *seq, void *v, loff_t *pos)
 		*pos = cpu+1;
 		return per_cpu_ptr(tbl->stats, cpu);
 	}
+	(*pos)++;
 	return NULL;
 }