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tty: ldsic: fix tty_ldisc_autoload sysctl's proc_handler

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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 <stable@kernel.org>
Signed-off-by: Nicolas Bouchinet <nicolas.bouchinet@ssi.gouv.fr>
Reviewed-by: Lin Feng <linf@wangsu.com>
Reviewed-by: Jiri Slaby <jirislaby@kernel.org>
Link: https://lore.kernel.org/r/20241112131357.49582-4-nicolas.bouchinet@clip-os.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Nicolas Bouchinet 2024-11-12 14:13:31 +01:00 committed by Greg Kroah-Hartman
parent 166105c903
commit 635a9fca54
1 changed files with 1 additions and 1 deletions
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2
drivers/tty/tty_io.c
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@ -3631,7 +3631,7 @@ static struct ctl_table tty_table[] = {
.data = &tty_ldisc_autoload, .data = &tty_ldisc_autoload,
.maxlen = sizeof(tty_ldisc_autoload), .maxlen = sizeof(tty_ldisc_autoload),
.mode = 0644, .mode = 0644,
.proc_handler = proc_dointvec, .proc_handler = proc_dointvec_minmax,
.extra1 = SYSCTL_ZERO, .extra1 = SYSCTL_ZERO,
.extra2 = SYSCTL_ONE, .extra2 = SYSCTL_ONE,
}, },