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Fri, 28 Aug 2026 06:42:05 -0700 (PDT) From: Jeffin Philip 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 Message-ID: <20260828134149.128160-1-jeffinphilip14@gmail.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: <6a90d9ef.4d659fcc.734b4.0019.GAE@google.com> References: <6a90d9ef.4d659fcc.734b4.0019.GAE@google.com> Precedence: bulk X-Mailing-List: linux-input@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit #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;