From: Vasily Averin vvs@virtuozzo.com
[ 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 --- net/atm/proc.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/net/atm/proc.c b/net/atm/proc.c index d79221fd4dae2..c318967073139 100644 --- a/net/atm/proc.c +++ b/net/atm/proc.c @@ -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; }