[syzbot] [input?] KASAN: slab-use-after-free Read in atkbd_set_repeat_rate
From: Jeffin Philip <hidden>
Date: 2026-08-28 13:42:07
Also in:
lkml
Subsystem:
input (keyboard, mouse, joystick, touchscreen) drivers, the rest · Maintainers:
Dmitry Torokhov, Linus Torvalds
#syz test: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 818bebeb63dd
diff --git a/drivers/input/keyboard/atkbd.c b/drivers/input/keyboard/atkbd.c
index 5736f4bc5a50..e235038afec6 100644
--- a/drivers/input/keyboard/atkbd.c
+++ b/drivers/input/keyboard/atkbd.c@@ -694,6 +694,7 @@ static int atkbd_event(struct input_dev *dev, static inline void atkbd_enable(struct atkbd *atkbd) { + guard(mutex)(&atkbd->mutex); guard(serio_pause_rx)(atkbd->ps2dev.serio); atkbd->enabled = true;
@@ -706,6 +707,7 @@ static inline void atkbd_enable(struct atkbd *atkbd) static inline void atkbd_disable(struct atkbd *atkbd) { + guard(mutex)(&atkbd->mutex); guard(serio_pause_rx)(atkbd->ps2dev.serio); atkbd->enabled = false;