From: Vasily Averin <vvs@virtuozzo.com>
To: "David S. Miller" <davem@davemloft.net>
Cc: Vishal Kulkarni <vishal@chelsio.com>, netdev@vger.kernel.org
Subject: [PATCH 2/6] l2t_seq_next should increase position index
Date: Thu, 23 Jan 2020 10:11:13 +0300 [thread overview]
Message-ID: <2e5504c8-edbe-395c-88f7-a69a7f681036@virtuozzo.com> (raw)
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>
---
drivers/net/ethernet/chelsio/cxgb4/l2t.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/chelsio/cxgb4/l2t.c b/drivers/net/ethernet/chelsio/cxgb4/l2t.c
index e9e4500..1a16449 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/l2t.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/l2t.c
@@ -678,8 +678,7 @@ static void *l2t_seq_start(struct seq_file *seq, loff_t *pos)
static void *l2t_seq_next(struct seq_file *seq, void *v, loff_t *pos)
{
v = l2t_get_idx(seq, *pos);
- if (v)
- ++*pos;
+ ++(*pos);
return v;
}
--
1.8.3.1
reply other threads:[~2020-01-23 7:11 UTC|newest]
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