From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ot1-f43.google.com (mail-ot1-f43.google.com [209.85.210.43]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B329144AB98 for ; Fri, 28 Aug 2026 13:42:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.43 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787924529; cv=none; b=EqJdn4DzCVcp6VmjwhQvC7BclU4qmQ+LbYhplioBSItt2T2jQzHI02mkZX/ChwChNAKRrNfNMVLlg0uMncx2WseHZM53lXHrv41us6DlOQLR19JfY6aMr/qNyR0couYHAICkv7jMVF/9CvdrvEmYkLXd35k9CoS7sdr1cflSqz0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787924529; c=relaxed/simple; bh=GWJ4EsZYgBrXUXaQIbPxSwPOYVKWU9Py+F12PQI7d6g=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=lgessmtH61g1RkEeU0SzN2NOX///u/JAtP3l97jGcJqhJUfPWt4X517843i8DNvnrSHE/3p+verG29bFZgHmnf+mKCt8fcnCAgoq4lyAuRcIcNCyQV+X8LB5/4OApFWHWhFL1T+seQjbYthtpjQj1DFvBh+Yauhkwpcuxx1T5PY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=SWfkkyqZ; arc=none smtp.client-ip=209.85.210.43 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="SWfkkyqZ" Received: by mail-ot1-f43.google.com with SMTP id 46e09a7af769-7f432ac553fso1104071a34.3 for ; Fri, 28 Aug 2026 06:42:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1787924526; x=1788529326; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to:content-type; bh=TTTPkY3p5/l/xMtKdtMWZFZxgRcLEutJ3JS8D0c6mic=; b=SWfkkyqZe7NPDGWoTjxvsokF2LklFJXcM+cp32e3lYOZnwOPhlj65GWdpziT4v1wyK nTSLhQK0uDqI2vLeflFVPV8pdNG4YP3GfA1b8cEoLCjgmeMTK7+J7DaxSd/4j736fru8 D/tFUFfc3+kh50CaL7xEjklTGTvYZpQ/Ig+5aa9ehulfRzSMWlUIVC9UN2AAJ11TsiQR pMi062SP4kBKfAQtzPGAgQf5PPa59fRTsIZgygvuV0ZadMBmVq8YHLuEeiKqb9xamR+s 5GWSQab/pSaUGOOvNzeIA+Ot45ncWoO9jeDQZOi9ZELq63MS43AWGgkGuPf0WD49vj/+ Sr+g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1787924526; x=1788529326; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to:content-type; bh=TTTPkY3p5/l/xMtKdtMWZFZxgRcLEutJ3JS8D0c6mic=; b=rGRq0Xg4/SfPZc97PoabNu+jX99r8rY2A4+b+3Nh54SyYckU+MP1MDpSBz0ZxuUmlq lsbvtivcf55C1etA4Xb8uSnTQegGg4NgdIidHwokaHGU+W6oqNKePXspC4XKNkwIHQ4g IXTcIrsStir/5FAsMEBEFrf4AeJKPNIINa6NPG4JmQCbumDyHLuVROsBhZk3yV8KEZsf JembpqR7gY/P/8nnxG2k8FWsaeZ+Jhw/zPeCR30k17w8yhmXkod/fP4wuUYVbA5lofJm sg2KHY6Knzkf0qwmdDVVAUo8Dfn0B46rkd8t/ayKjdzExWtK8KgS2hoLKPyHkqCNOLJW 4xlA== X-Forwarded-Encrypted: i=1; AHgh+RqteN2BPWtGyJUKkAwiKMtUVtkIXD4pvzGK4WTFTCXPL3TvhCKt1CvcWdH8hsf0Q1ellEJhRWV4thnsZCU=@vger.kernel.org X-Gm-Message-State: AFuF++mgWW2qiuOusGexPJGJnLxD/xLqhQBba1zebiwz1BvSxM7sBtgZ d81TK2q2b/5rAhKxyarBB1HXqFOCP55NXw0Kr3zMvO8uA/aCw6jMxCy9 X-Gm-Gg: AR+sD10/WTw2iMlPd4kbvTvlwXZ5OVAvNesGurctYduXfXGkEPSDF1r7d3mfvtw2+PV YsrWIOA6eUo4X/YAISfVHLfbJIGkJiJJcgMik5kv15mDl+3VWtKVQJIYXnRtcnNiJ5542+mhKzN 7hAumLR2CVzJtB/UzTIB/Zfmf9ijRlY7vpjU3qRisAEmLnDKQXuaxFvJ5gZLdS6Xnu8cehkU/J7 DWVJUnGCh9A9Mf9zxTrBf9ki5UrHJ6xYGGBstzyd2FUiWUiPrpY6UhVxHQMkfoYJIgPGANOd6Mq T/GtellbRkp+L9NhANsjAWQCLPP0giwI37xwXBf0kFtpCOix6nZzt65lTNaBgUIyLbmvsI1Cq/+ /Xv61/FYAEAKcxBBDXNwmFXAv9qgvUjnu/x/FJ063dO+0XDX1ooEeXclrX2CxWzIB4xyvEeYZA2 8RZF2TK/XMCVjVgatI3Sw7MGRUv58UFnoo6G41JlZ4CKCGaHCSUJkOCBN5WPzc9quUieeTgWRDl AU= X-Received: by 2002:a05:6820:3442:b0:6b1:705d:b29e with SMTP id 006d021491bc7-6b1c6729041mr4955953eaf.26.1787924526454; Fri, 28 Aug 2026 06:42:06 -0700 (PDT) Received: from Default ([2409:40f4:101e:9d7e:7e26:7b81:64f6:f32]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-3286f80a0a5sm6783557eec.11.2026.08.28.06.42.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); 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-kernel@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;