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From: Jeffin Philip <jeffinphilip14@gmail.com>
To: syzbot+1e2ef9bcb29af666b2e6@syzkaller.appspotmail.com
Cc: dmitry.torokhov@gmail.com, linux-input@vger.kernel.org,
	linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com
Subject: [syzbot] [input?] KASAN: slab-use-after-free Read in atkbd_set_repeat_rate
Date: Fri, 28 Aug 2026 19:11:49 +0530	[thread overview]
Message-ID: <20260828134149.128160-1-jeffinphilip14@gmail.com> (raw)
In-Reply-To: <6a90d9ef.4d659fcc.734b4.0019.GAE@google.com>

#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;

  parent reply	other threads:[~2026-08-28 13:42 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-08-28  0:44 syzbot
2026-08-28 11:42 ` syzbot
2026-08-28 12:54 ` Jeffin Philip
2026-08-28 13:03   ` syzbot
2026-08-28 13:41 ` Jeffin Philip [this message]
2026-08-28 14:06   ` syzbot
2026-08-28 14:03 ` Jeffin Philip
2026-08-28 14:20   ` syzbot

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