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-rw-r--r--Documentation/admin-guide/sysctl/kernel.rst9
-rw-r--r--kernel/sysctl.c4
2 files changed, 11 insertions, 2 deletions
diff --git a/Documentation/admin-guide/sysctl/kernel.rst b/Documentation/admin-guide/sysctl/kernel.rst
index eb6bc9cc0318..6b313b6d42d5 100644
--- a/Documentation/admin-guide/sysctl/kernel.rst
+++ b/Documentation/admin-guide/sysctl/kernel.rst
@@ -517,6 +517,15 @@ Notes:
successful IPC object allocation. If an IPC object allocation syscall
fails, it is undefined if the value remains unmodified or is reset to -1.
+
+ngroups_max
+===========
+
+Maximum number of supplementary groups, _i.e._ the maximum size which
+``setgroups`` will accept. Exports ``NGROUPS_MAX`` from the kernel.
+
+
+
nmi_watchdog
============
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 8a176d8727a3..2ba9f449d273 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -146,7 +146,7 @@ static unsigned long dirty_bytes_min = 2 * PAGE_SIZE;
static int maxolduid = 65535;
static int minolduid;
-static int ngroups_max = NGROUPS_MAX;
+static const int ngroups_max = NGROUPS_MAX;
static const int cap_last_cap = CAP_LAST_CAP;
/*
@@ -883,7 +883,7 @@ static struct ctl_table kern_table[] = {
#endif
{
.procname = "ngroups_max",
- .data = &ngroups_max,
+ .data = (void *)&ngroups_max,
.maxlen = sizeof (int),
.mode = 0444,
.proc_handler = proc_dointvec,