| Message ID | 20241017152422.487406-3-atenart@kernel.org (mailing list archive) |
|---|---|
| State | Accepted |
| Commit | a8cc8fa14541d6f8f1fbe78607a096e97c80179e |
| Delegated to: | Netdev Maintainers |
| Headers | show |
| Series | net: sysctl: allow dump_cpumask to handle higher numbers of CPUs | expand |
diff --git a/net/core/sysctl_net_core.c b/net/core/sysctl_net_core.c index e7c0121dfaa1..8dc07f7b1772 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;
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 <atenart@kernel.org> --- net/core/sysctl_net_core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)