From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B4F70C433F5 for ; Fri, 17 Dec 2021 10:57:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235122AbhLQK5T (ORCPT ); Fri, 17 Dec 2021 05:57:19 -0500 Received: from mail-il1-f200.google.com ([209.85.166.200]:56126 "EHLO mail-il1-f200.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235032AbhLQK5S (ORCPT ); Fri, 17 Dec 2021 05:57:18 -0500 Received: by mail-il1-f200.google.com with SMTP id p1-20020a92d281000000b002b2050d9ae3so1154540ilp.22 for ; Fri, 17 Dec 2021 02:57:18 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:date:message-id:subject:from:to; 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KMSAN: uninit-value in genius_detect From: syzbot To: dmitry.torokhov@gmail.com, glider@google.com, linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: b0a8b5053e8b kmsan: core: add dependency on DEBUG_KERNEL git tree: https://github.com/google/kmsan.git master console output: https://syzkaller.appspot.com/x/log.txt?x=10a5adcdb00000 kernel config: https://syzkaller.appspot.com/x/.config?x=46a956fc7a887c60 dashboard link: https://syzkaller.appspot.com/bug?extid=ea4fcd3ec1e6f90262bb compiler: clang version 14.0.0 (/usr/local/google/src/llvm-git-monorepo 2b554920f11c8b763cd9ed9003f4e19b919b8e1f), GNU ld (GNU Binutils for Debian) 2.35.2 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+ea4fcd3ec1e6f90262bb@syzkaller.appspotmail.com input: AT Translated Set 2 keyboard as /devices/platform/i8042/serio0/input/input2 ===================================================== BUG: KMSAN: uninit-value in genius_detect+0x4ec/0x6f0 drivers/input/mouse/psmouse-base.c:568 genius_detect+0x4ec/0x6f0 drivers/input/mouse/psmouse-base.c:568 psmouse_do_detect drivers/input/mouse/psmouse-base.c:1046 [inline] psmouse_try_protocol drivers/input/mouse/psmouse-base.c:1060 [inline] psmouse_extensions+0x1964/0x1b60 drivers/input/mouse/psmouse-base.c:1216 psmouse_switch_protocol+0x184/0xbb0 drivers/input/mouse/psmouse-base.c:1579 psmouse_connect+0x14cc/0x2260 drivers/input/mouse/psmouse-base.c:1669 serio_connect_driver drivers/input/serio/serio.c:47 [inline] serio_driver_probe+0xc7/0x130 drivers/input/serio/serio.c:778 really_probe+0x67d/0x1510 drivers/base/dd.c:596 __driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751 driver_probe_device drivers/base/dd.c:781 [inline] __driver_attach+0x6a6/0x1350 drivers/base/dd.c:1140 bus_for_each_dev+0x20e/0x340 drivers/base/bus.c:301 driver_attach+0x89/0xb0 drivers/base/dd.c:1157 serio_attach_driver drivers/input/serio/serio.c:807 [inline] serio_handle_event+0x11fb/0x2760 drivers/input/serio/serio.c:227 process_one_work+0xdb9/0x1820 kernel/workqueue.c:2298 worker_thread+0x10bc/0x21f0 kernel/workqueue.c:2445 kthread+0x721/0x850 kernel/kthread.c:327 ret_from_fork+0x1f/0x30 Uninit was stored to memory at: __ps2_command+0x23fe/0x25b0 drivers/input/serio/libps2.c:299 ps2_command+0x124/0x210 drivers/input/serio/libps2.c:332 genius_detect+0x2f9/0x6f0 drivers/input/mouse/psmouse-base.c:564 psmouse_do_detect drivers/input/mouse/psmouse-base.c:1046 [inline] psmouse_try_protocol drivers/input/mouse/psmouse-base.c:1060 [inline] psmouse_extensions+0x1964/0x1b60 drivers/input/mouse/psmouse-base.c:1216 psmouse_switch_protocol+0x184/0xbb0 drivers/input/mouse/psmouse-base.c:1579 psmouse_connect+0x14cc/0x2260 drivers/input/mouse/psmouse-base.c:1669 serio_connect_driver drivers/input/serio/serio.c:47 [inline] serio_driver_probe+0xc7/0x130 drivers/input/serio/serio.c:778 really_probe+0x67d/0x1510 drivers/base/dd.c:596 __driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751 driver_probe_device drivers/base/dd.c:781 [inline] __driver_attach+0x6a6/0x1350 drivers/base/dd.c:1140 bus_for_each_dev+0x20e/0x340 drivers/base/bus.c:301 driver_attach+0x89/0xb0 drivers/base/dd.c:1157 serio_attach_driver drivers/input/serio/serio.c:807 [inline] serio_handle_event+0x11fb/0x2760 drivers/input/serio/serio.c:227 process_one_work+0xdb9/0x1820 kernel/workqueue.c:2298 worker_thread+0x10bc/0x21f0 kernel/workqueue.c:2445 kthread+0x721/0x850 kernel/kthread.c:327 ret_from_fork+0x1f/0x30 Uninit was stored to memory at: __ps2_command+0xa33/0x25b0 drivers/input/serio/libps2.c:253 ps2_command+0x124/0x210 drivers/input/serio/libps2.c:332 genius_detect+0x2f9/0x6f0 drivers/input/mouse/psmouse-base.c:564 psmouse_do_detect drivers/input/mouse/psmouse-base.c:1046 [inline] psmouse_try_protocol drivers/input/mouse/psmouse-base.c:1060 [inline] psmouse_extensions+0x1964/0x1b60 drivers/input/mouse/psmouse-base.c:1216 psmouse_switch_protocol+0x184/0xbb0 drivers/input/mouse/psmouse-base.c:1579 psmouse_connect+0x14cc/0x2260 drivers/input/mouse/psmouse-base.c:1669 serio_connect_driver drivers/input/serio/serio.c:47 [inline] serio_driver_probe+0xc7/0x130 drivers/input/serio/serio.c:778 really_probe+0x67d/0x1510 drivers/base/dd.c:596 __driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751 driver_probe_device drivers/base/dd.c:781 [inline] __driver_attach+0x6a6/0x1350 drivers/base/dd.c:1140 bus_for_each_dev+0x20e/0x340 drivers/base/bus.c:301 driver_attach+0x89/0xb0 drivers/base/dd.c:1157 serio_attach_driver drivers/input/serio/serio.c:807 [inline] serio_handle_event+0x11fb/0x2760 drivers/input/serio/serio.c:227 process_one_work+0xdb9/0x1820 kernel/workqueue.c:2298 worker_thread+0x10bc/0x21f0 kernel/workqueue.c:2445 kthread+0x721/0x850 kernel/kthread.c:327 ret_from_fork+0x1f/0x30 Local variable param created at: genius_detect+0x6b/0x6f0 drivers/input/mouse/psmouse-base.c:548 psmouse_do_detect drivers/input/mouse/psmouse-base.c:1046 [inline] psmouse_try_protocol drivers/input/mouse/psmouse-base.c:1060 [inline] psmouse_extensions+0x1964/0x1b60 drivers/input/mouse/psmouse-base.c:1216 CPU: 0 PID: 7 Comm: kworker/0:1 Not tainted 5.16.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events_long serio_handle_event ===================================================== --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot.