diff mbox series

[4/6] neigh_stat_seq_next() should increase position index

Message ID 7247b949-c5ee-c727-40a2-5770ab0f8e19@virtuozzo.com
State Accepted
Delegated to: David Miller
Headers show
Series None | expand

Commit Message

Vasily Averin Jan. 23, 2020, 7:11 a.m. UTC 
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 <vvs@virtuozzo.com>
---
 net/core/neighbour.c | 1 +
 1 file changed, 1 insertion(+)
diff mbox series

Patch

diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index 920784a..789a73a 100644
--- 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;
 }