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Date: Thu, 17 Sep 2020 22:15:52 -0400 From: Sasha Levin <sashal@...nel.org> To: linux-kernel@...r.kernel.org, stable@...r.kernel.org Cc: Vasily Averin <vvs@...tuozzo.com>, "David S . Miller" <davem@...emloft.net>, Sasha Levin <sashal@...nel.org>, netdev@...r.kernel.org Subject: [PATCH AUTOSEL 4.4 13/64] neigh_stat_seq_next() should increase position index From: Vasily Averin <vvs@...tuozzo.com> [ Upstream commit 1e3f9f073c47bee7c23e77316b07bc12338c5bba ] 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@...tuozzo.com> Signed-off-by: David S. Miller <davem@...emloft.net> Signed-off-by: Sasha Levin <sashal@...nel.org> --- net/core/neighbour.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/core/neighbour.c b/net/core/neighbour.c index 9849f1f4cf4f7..40d33431bc585 100644 --- a/net/core/neighbour.c +++ b/net/core/neighbour.c @@ -2798,6 +2798,7 @@ 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; } -- 2.25.1
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