| From | Greg Kroah-Hartman <> | Subject | [PATCH 5.9 13/49] mptcp: print new line in mptcp_seq_show() if mptcp isnt in use | Date | Sat, 19 Dec 2020 13:58:17 +0100 |
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From: Jianguo Wu <wujianguo@chinatelecom.cn>
[ Upstream commit f55628b3e7648198e9c072b52080c5dea8678adf ]
When do cat /proc/net/netstat, the output isn't append with a new line, it looks like this: [root@localhost ~]# cat /proc/net/netstat ... MPTcpExt: 0 0 0 0 0 0 0 0 0 0 0 0 0[root@localhost ~]#
This is because in mptcp_seq_show(), if mptcp isn't in use, net->mib.mptcp_statistics is NULL, so it just puts all 0 after "MPTcpExt:", and return, forgot the '\n'.
After this patch:
[root@localhost ~]# cat /proc/net/netstat ... MPTcpExt: 0 0 0 0 0 0 0 0 0 0 0 0 0 [root@localhost ~]#
Fixes: fc518953bc9c8d7d ("mptcp: add and use MIB counter infrastructure") Signed-off-by: Jianguo Wu <wujianguo@chinatelecom.cn> Acked-by: Florian Westphal <fw@strlen.de> Link: https://lore.kernel.org/r/142e2fd9-58d9-bb13-fb75-951cccc2331e@163.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- net/mptcp/mib.c | 1 + 1 file changed, 1 insertion(+)
--- a/net/mptcp/mib.c +++ b/net/mptcp/mib.c @@ -58,6 +58,7 @@ void mptcp_seq_show(struct seq_file *seq for (i = 0; mptcp_snmp_list[i].name; i++) seq_puts(seq, " 0"); + seq_putc(seq, '\n'); return; }
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