kernel/sysctl.c: fix sizeof argument to match variable name

Fix sizeof argument to be the same as the data variable name.  Probably
a copy/paste error.

Mostly harmless since both variables are unsigned int.

Fixes kernel bugzilla #197371:
  Possible access to unintended variable in "kernel/sysctl.c" line 1339
https://bugzilla.kernel.org/show_bug.cgi?id=197371

Link: http://lkml.kernel.org/r/e0d0531f-361e-ef5f-8499-32743ba907e1@infradead.org
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reported-by: Petru Mihancea <petrum@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index bdf7090b106dadb817ad924b09a2cafcc4fc26de..a2854f6e07430b0c84e24582e233388925a7ba0b 100644 (file)
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -1340,7 +1340,7 @@ static struct ctl_table vm_table[] = {
        {
                .procname       = "dirtytime_expire_seconds",
                .data           = &dirtytime_expire_interval,
-               .maxlen         = sizeof(dirty_expire_interval),
+               .maxlen         = sizeof(dirtytime_expire_interval),
                .mode           = 0644,
                .proc_handler   = dirtytime_interval_handler,
                .extra1         = &zero,