Commit a8cc8fa1 authored by Antoine Tenart's avatar Antoine Tenart Committed by Paolo Abeni
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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: default avatarAntoine Tenart <atenart@kernel.org>
Signed-off-by: default avatarPaolo Abeni <pabeni@redhat.com>
parent d631094e

net/core/sysctl_net_core.c

+1 −1
Original line number Diff line number Diff line
@@ -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;