sysctl: Return -ENOSYS from proc_douintvec_conv when CONFIG_PROC_SYSCTL=n

Joelgranados · Joelgranados · commit 11400f86c28e · 2026-01-05T14:10:32.000+01:00
Ensure an error if prco_douintvec_conv is erroneously called in a system
with CONFIG_PROC_SYSCTL=n

Signed-off-by: Joel Granados &lt;joel.granados@kernel.org&gt;
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
@@ -1071,6 +1071,14 @@ int proc_douintvec_minmax(const struct ctl_table *table, int dir,
 	return -ENOSYS;
 }
 
+int proc_douintvec_conv(const struct ctl_table *table, int write, void *buffer,
+			size_t *lenp, loff_t *ppos,
+			int (*conv)(unsigned long *lvalp, unsigned int *valp,
+				    int write, const struct ctl_table *table))
+{
+	return -ENOSYS;
+}
+
 int proc_dou8vec_minmax(const struct ctl_table *table, int dir,
 			void *buffer, size_t *lenp, loff_t *ppos)
 {

Original file line number	Diff line number	Diff line change
`@@ -1071,6 +1071,14 @@ int proc_douintvec_minmax(const struct ctl_table *table, int dir,`
`1071`	`1071`	`return -ENOSYS;`
`1072`	`1072`	`}`
`1073`	`1073`
	`1074`	`+int proc_douintvec_conv(const struct ctl_table table, int write, void buffer,`
	`1075`	`+ size_t lenp, loff_t ppos,`
	`1076`	`+ int (conv)(unsigned long lvalp, unsigned int *valp,`
	`1077`	`+ int write, const struct ctl_table *table))`
	`1078`	`+{`
	`1079`	`+ return -ENOSYS;`
	`1080`	`+}`
	`1081`	`+`
`1074`	`1082`	`int proc_dou8vec_minmax(const struct ctl_table *table, int dir,`
`1075`	`1083`	`void buffer, size_t lenp, loff_t *ppos)`
`1076`	`1084`	`{`