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vcc_seq_next should increase position index 

[ Upstream commit 8bf7092021f283944f0c5f4c364853201c45c611 ]

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>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Vasily Averin 2020-01-23 10:11:20 +03:00 committed by Greg Kroah-Hartman
parent 8c926e159a
commit f508c5d993
1 changed files with 1 additions and 2 deletions
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3
net/atm/proc.c
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@ -134,8 +134,7 @@ static void vcc_seq_stop(struct seq_file *seq, void *v)
static void *vcc_seq_next(struct seq_file *seq, void *v, loff_t *pos)
{
v = vcc_walk(seq, 1);
if (v)
(*pos)++;
(*pos)++;
return v;
}