[PATCH 5/6] rt_cpu_seq_next should increase position index
From: Vasily Averin <hidden>
Date: 2020-01-23 07:11:39
Subsystem:
networking [general], networking [ipv4/ipv6], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, David Ahern, Ido Schimmel, Linus Torvalds
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 <redacted> --- net/ipv4/route.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 87e979f..e356ea7 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c@@ -271,6 +271,7 @@ static void *rt_cpu_seq_next(struct seq_file *seq, void *v, loff_t *pos) *pos = cpu+1; return &per_cpu(rt_cache_stat, cpu); } + (*pos)++; return NULL; }
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1.8.3.1