From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f200.google.com (mail-il1-f200.google.com [209.85.166.200]) (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 BADAF68 for ; Fri, 10 Dec 2021 12:59:26 +0000 (UTC) Received: by mail-il1-f200.google.com with SMTP id f5-20020a056e02168500b002a169f37fbcso10343085ila.21 for ; Fri, 10 Dec 2021 04:59:26 -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; bh=AeyBw/8ZTXFPGML0AlgWPXixvlMPmLkpLOPCsARNEJM=; b=hHMNxYqw08KEUMQp5bNWfVP4661dZu+xiG2Jfy767qKGJOobq6GnYXoK8TzLcHPFA3 1hXlbLXdIGv59/37eAdYSbEOw5S2lR3iehcnPJ9xz+KRdTnqtZU7ddWakKO3lN9dO2LP QtifPc9MhWp16ZUOULRZ69C7jQPxpGZ/kAb1FhFGNRkGiBkO7pBvKCTEGS6sY8xQFB5E gqAO9T/BGTCyDCzut6XhKfDZlRhqVm2mj0zX52lfZrWyOUrEK4kF3oYNfFrBDhqAIRDQ /5q7CFqoVbpq6UpLPSYm/HmM5DmWrarOeQLJ3BCRuUU4ZTSkv58NTLOQmHmn/GqQ9FXz kkMQ== X-Gm-Message-State: AOAM5302SueO3It4GSJ0yyKsRh4ItMFjDvo8jbYo+o3E6fSru4noZW08 EdtOh2jKYsNfBHMGQYagwPbKymBSXCZ4j68yrsmliHwCEDUA X-Google-Smtp-Source: ABdhPJzjwM9fNw7ikMR8I4vjI6FzQ24wGliwodR5iNgJiRzSF+9d2bqSqlqmowRQTP6dNw0z7p5zuQmk5BLgKHr+p8Ey8NSURJNu Precedence: bulk X-Mailing-List: linux-staging@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a02:6064:: with SMTP id d36mr17106205jaf.80.1639141165903; Fri, 10 Dec 2021 04:59:25 -0800 (PST) Date: Fri, 10 Dec 2021 04:59:25 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000ee344d05d2ca4a4b@google.com> Subject: [syzbot] KMSAN: uninit-value in efuse_one_byte_read (2) From: syzbot To: Larry.Finger@lwfinger.net, florian.c.schilhabel@googlemail.com, glider@google.com, gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, linux-staging@lists.linux.dev, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: cdfb223e7e63 kmsan: core: define KMSAN_BUG_ON git tree: https://github.com/google/kmsan.git master console output: https://syzkaller.appspot.com/x/log.txt?x=11ade575b00000 kernel config: https://syzkaller.appspot.com/x/.config?x=e00a8959fdd3f3e8 dashboard link: https://syzkaller.appspot.com/bug?extid=1b535a057d0360bbcc56 compiler: clang version 14.0.0 (git@github.com:llvm/llvm-project.git 0996585c8e3b3d409494eb5f1cad714b9e1f7fb5), GNU ld (GNU Binutils for Debian) 2.35.2 Unfortunately, I don't have any reproducer for this issue yet. IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+1b535a057d0360bbcc56@syzkaller.appspotmail.com usb 2-1: r8712u: Boot from EFUSE: Autoload OK ===================================================== BUG: KMSAN: uninit-value in efuse_one_byte_read+0x20f/0x2e0 drivers/staging/rtl8712/rtl8712_efuse.c:76 efuse_one_byte_read+0x20f/0x2e0 drivers/staging/rtl8712/rtl8712_efuse.c:76 r8712_efuse_pg_packet_read+0x2bb/0xd80 drivers/staging/rtl8712/rtl8712_efuse.c:245 r871xu_drv_init+0x1b90/0x2e90 drivers/staging/rtl8712/usb_intf.c:440 usb_probe_interface+0xed9/0x14f0 drivers/usb/core/driver.c:396 really_probe+0x66e/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] __device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898 bus_for_each_drv+0x2f0/0x410 drivers/base/bus.c:427 __device_attach+0x593/0x8e0 drivers/base/dd.c:969 device_initial_probe+0x4a/0x60 drivers/base/dd.c:1016 bus_probe_device+0x17b/0x3e0 drivers/base/bus.c:487 device_add+0x1d46/0x2400 drivers/base/core.c:3394 usb_set_configuration+0x389f/0x3ee0 drivers/usb/core/message.c:2170 usb_generic_driver_probe+0x13c/0x300 drivers/usb/core/generic.c:238 usb_probe_device+0x309/0x570 drivers/usb/core/driver.c:293 really_probe+0x66e/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] __device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898 bus_for_each_drv+0x2f0/0x410 drivers/base/bus.c:427 __device_attach+0x593/0x8e0 drivers/base/dd.c:969 device_initial_probe+0x4a/0x60 drivers/base/dd.c:1016 bus_probe_device+0x17b/0x3e0 drivers/base/bus.c:487 device_add+0x1d46/0x2400 drivers/base/core.c:3394 usb_new_device+0x1b9a/0x2960 drivers/usb/core/hub.c:2563 hub_port_connect drivers/usb/core/hub.c:5353 [inline] hub_port_connect_change drivers/usb/core/hub.c:5497 [inline] port_event drivers/usb/core/hub.c:5643 [inline] hub_event+0x595e/0x8910 drivers/usb/core/hub.c:5725 process_one_work+0xdc2/0x1820 kernel/workqueue.c:2298 worker_thread+0x10f1/0x2290 kernel/workqueue.c:2445 kthread+0x721/0x850 kernel/kthread.c:327 ret_from_fork+0x1f/0x30 Local variable data created at: usb_read8+0x5d/0x130 drivers/staging/rtl8712/usb_ops.c:33 r8712_read8+0xa5/0xd0 drivers/staging/rtl8712/rtl8712_io.c:29 CPU: 1 PID: 20362 Comm: kworker/1:1 Not tainted 5.16.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: usb_hub_wq hub_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.