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neigh_stat_seq_next() should increase position index

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[ Upstream commit 1e3f9f073c ]

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 10:11:28 +03:00 committed by Greg Kroah-Hartman
parent 62fd2fcca3
commit c66173df61
1 changed files with 1 additions and 0 deletions
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net/core/neighbour.c
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@ -2836,6 +2836,7 @@ 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;
}