From: Nicolas Bouchinet Date: Tue, 12 Nov 2024 13:13:31 +0000 (+0100) Subject: tty: ldsic: fix tty_ldisc_autoload sysctl's proc_handler X-Git-Tag: v4.19.325~33 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=b39755107cd27ba70d9e46f1f9a714835d5da307;p=thirdparty%2Fkernel%2Fstable.git tty: ldsic: fix tty_ldisc_autoload sysctl's proc_handler commit 635a9fca54f4f4148be1ae1c7c6bd37af80f5773 upstream. Commit 7c0cca7c847e ("tty: ldisc: add sysctl to prevent autoloading of ldiscs") introduces the tty_ldisc_autoload sysctl with the wrong proc_handler. .extra1 and .extra2 parameters are set to avoid other values thant SYSCTL_ZERO or SYSCTL_ONE to be set but proc_dointvec do not uses them. This commit fixes this by using proc_dointvec_minmax instead of proc_dointvec. Fixes: 7c0cca7c847e ("tty: ldisc: add sysctl to prevent autoloading of ldiscs") Cc: stable Signed-off-by: Nicolas Bouchinet Reviewed-by: Lin Feng Reviewed-by: Jiri Slaby Link: https://lore.kernel.org/r/20241112131357.49582-4-nicolas.bouchinet@clip-os.org Signed-off-by: Greg Kroah-Hartman Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/tty/tty_ldisc.c b/drivers/tty/tty_ldisc.c index 245c9a51c2de2..a0866a7a4baff 100644 --- a/drivers/tty/tty_ldisc.c +++ b/drivers/tty/tty_ldisc.c @@ -854,7 +854,7 @@ static struct ctl_table tty_table[] = { .data = &tty_ldisc_autoload, .maxlen = sizeof(tty_ldisc_autoload), .mode = 0644, - .proc_handler = proc_dointvec, + .proc_handler = proc_dointvec_minmax, .extra1 = &zero, .extra2 = &one, },