From a8cc8fa14541d6f8f1fbe78607a096e97c80179e Mon Sep 17 00:00:00 2001 From: Antoine Tenart Date: Thu, 17 Oct 2024 17:24:18 +0200 Subject: [PATCH] net: sysctl: do not reserve an extra char in dump_cpumask temporary buffer When computing the length we'll be able to use out of the buffers, one char is removed from the temporary one to make room for a newline. It should be removed from the output buffer length too, but in reality this is not needed as the later call to scnprintf makes sure a null char is written at the end of the buffer which we override with the newline. Signed-off-by: Antoine Tenart Signed-off-by: Paolo Abeni --- net/core/sysctl_net_core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/core/sysctl_net_core.c b/net/core/sysctl_net_core.c index e7c0121dfaa16..8dc07f7b1772e 100644 --- a/net/core/sysctl_net_core.c +++ b/net/core/sysctl_net_core.c @@ -62,7 +62,7 @@ static void dump_cpumask(void *buffer, size_t *lenp, loff_t *ppos, return; } - len = min(sizeof(kbuf) - 1, *lenp); + len = min(sizeof(kbuf), *lenp); len = scnprintf(kbuf, len, "%*pb", cpumask_pr_args(mask)); if (!len) { *lenp = 0; -- 2.39.5