From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pg1-f178.google.com (mail-pg1-f178.google.com [209.85.215.178]) (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 9762D205E32 for ; Sat, 20 Apr 2024 06:15:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.215.178 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713593711; cv=none; b=MloC/lroaRJe5MJNQEMwwbJKQXrHoEP81nAIojtDC60xiCSUkh2KKyPZmkau50YiiKjCPJ63l97z1BtwQLT7Qic0+QUwrhrZulv+RSDdelCaOfPXlLxPTMJkyWG5TiZa38ogmeUn8qurpk5wtyIjyblOcdIKpR+MuduvZia3u0o= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713593711; c=relaxed/simple; bh=ZolRI2ztsSyqYXap63TOzAtzW5UT+oyhSNBzd5uy1Ow=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=n9kcEcliBmDbUDGDYNvgTW0ajR6h8y4NXeBOLXVxqgpFKeA4OWnMIsX0H1EoSDEoIN12H2Q6GeYw+4O0MickP6NnnGalxXEYSGLJmsPAOBtmdUPLNh9fS+EwW1emr8eXKxB+RazyAS1A/mHHP/RTZmWkxVjhG8Dqe/yEB1Mk250= 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=Qg8kF4Gy; arc=none smtp.client-ip=209.85.215.178 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="Qg8kF4Gy" Received: by mail-pg1-f178.google.com with SMTP id 41be03b00d2f7-5cfd95130c6so1797638a12.1 for ; Fri, 19 Apr 2024 23:15:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1713593709; x=1714198509; 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; bh=YlC9FsdeF0rfQMdZj7e6J8+wbY+rNUqhDWpmqrph2kE=; b=Qg8kF4GyrbMYpygolQejTAhpuMEenESv5nZe63GweDAZ/P0duR4famgxiDktUwvbIO MJF3ikz6Fe+WPW00CeA8EYWl1RTDQ3LARbHjB9uu/wAd8LnVWXmvaj+PbaQwxcqtObMY byUlvSR5uf8mxv5y4t6K2dS3unVxNtzj3tH9qWAj7t4N4f5RJdN06Ze8yPPsroGFP1gf iniY1OGtVkMI52Jni/58aVC6dEeqtkk/wZS7xv4kYwVUvRJWqRuA7OAC0jmCOdZOTnuP BMGJ6tkXqyOpO6I6rnbmJQsypF5tClfPhXX6PkSslKXdODmay1EJUwHpaWLGK3D+nlHs 4Jmw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1713593709; x=1714198509; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=YlC9FsdeF0rfQMdZj7e6J8+wbY+rNUqhDWpmqrph2kE=; b=wKFxmjtOFqyzFUI4VUWrOFFPqwH5+LtW4Y0eT6oZ5kry+CzgyWEGQjA6qHNECdu96Y TXbA0BURPyNibOdqiQIFlLze4hLpIy68u52YXtK/yL/Tyz3Jqku4AYe1hHAFRwCFY7Mk /5y0FkKPgsYbXqeoW9QN0irb1h/Y0PXEJ29xbfL7TkTlOc4hU3vVMfORdhSHZrUYiCIw EKpHnKRlJGkTiU6iH6UQ0RC8t2Y32NLVuA5DKiZj8N2KS9PWf8CHH5GB9Xw2ciJYC6iX IyfRbdn5Z+yByy8MU7aEmt+pUqPt1Yo6ISMVEOreIiz32GYUDQfLBEjCSvQo8vI7Bz5R SUkA== X-Gm-Message-State: AOJu0YzLnSFsIGVVg1JWXP5QanbUK+ux0MrAEz0JZR8BsAqBXQLQu3jh mZZpEASf33mRjdrfh3hrbzrNMCknFskd3kr8DHZEvbZlQoGjaNAGXQGeEd4Ymt8= X-Google-Smtp-Source: AGHT+IHGpfiTq24KebTzUO6zupQ0+w0WXQlTrWgBUbY7ZE+7booh5eMWYuU4wjQejiGMx8ENm6/XVA== X-Received: by 2002:a05:6a20:3951:b0:1aa:a473:3ee0 with SMTP id r17-20020a056a20395100b001aaa4733ee0mr5059294pzg.6.1713593708848; Fri, 19 Apr 2024 23:15:08 -0700 (PDT) Received: from kernelexploit-virtual-machine.localdomain ([121.185.186.233]) by smtp.gmail.com with ESMTPSA id jv21-20020a170903059500b001e89827e2e8sm3774338plb.305.2024.04.19.23.15.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 19 Apr 2024 23:15:08 -0700 (PDT) From: Jeongjun Park To: syzbot+d4c06e848a1c1f9f726f@syzkaller.appspotmail.com Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Subject: Re: [syzbot] possible deadlock in input_event (2) Date: Sat, 20 Apr 2024 15:15:05 +0900 Message-Id: <20240420061505.62849-1-aha310510@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <0000000000006d6f4105d2fe05ed@google.com> References: <0000000000006d6f4105d2fe05ed@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 please test deadlock in input_event #syz test git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master --- drivers/input/evdev.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/input/evdev.c b/drivers/input/evdev.c index 51e0c4954600..181c798b232b 100644 --- a/drivers/input/evdev.c +++ b/drivers/input/evdev.c @@ -258,7 +258,7 @@ static void evdev_pass_values(struct evdev_client *client, event.input_event_usec = ts.tv_nsec / NSEC_PER_USEC; /* Interrupts are disabled, just acquire the lock. */ - spin_lock(&client->buffer_lock); + spin_lock_irq(&client->buffer_lock); for (v = vals; v != vals + count; v++) { if (__evdev_is_filtered(client, v->type, v->code)) @@ -278,7 +278,7 @@ static void evdev_pass_values(struct evdev_client *client, __pass_event(client, &event); } - spin_unlock(&client->buffer_lock); + spin_unlock_irq(&client->buffer_lock); if (wakeup) wake_up_interruptible_poll(&client->wait, -- 2.34.1