[PATCH 8/8] sysctl: Warn on an empty procname element

[Joel Granados via B4 Relay <devnull+j.granados.samsung.com@kernel.org>]

From: Joel Granados <j.granados@samsung.com>

Add a pr_err warning in case a ctl_table is registered with a sentinel
element containing a NULL procname.

Signed-off-by: Joel Granados <j.granados@samsung.com>
---
 fs/proc/proc_sysctl.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c
index 806700b70dea..f65098de5fcb 100644
--- a/fs/proc/proc_sysctl.c
+++ b/fs/proc/proc_sysctl.c
@@ -1119,6 +1119,8 @@ static int sysctl_check_table(const char *path, struct ctl_table_header *header)
 	struct ctl_table *entry;
 	int err = 0;
 	list_for_each_table_entry(entry, header) {
+		if (!entry->procname)
+			err |= sysctl_err(path, entry, "procname is null");
 		if ((entry->proc_handler == proc_dostring) ||
 		    (entry->proc_handler == proc_dobool) ||
 		    (entry->proc_handler == proc_dointvec) ||

-- 
2.43.0