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 X-Spam-Level: X-Spam-Status: No, score=-8.7 required=3.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 069C9C5519F for ; Tue, 17 Nov 2020 15:40:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BB9762463D for ; Tue, 17 Nov 2020 15:40:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726376AbgKQPk2 (ORCPT ); Tue, 17 Nov 2020 10:40:28 -0500 Received: from mail-il1-f199.google.com ([209.85.166.199]:33004 "EHLO mail-il1-f199.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725767AbgKQPk1 (ORCPT ); Tue, 17 Nov 2020 10:40:27 -0500 Received: by mail-il1-f199.google.com with SMTP id t11so6806654ilo.0 for ; Tue, 17 Nov 2020 07:40:24 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:message-id:subject:from:to; bh=uGeuYqpVtihTj5/nHBNIe/i2cR/1M+L/pN2RP/KvK2o=; b=RTU0ir6oXR9hZ7Tb36gpMAXDa9gHvSBErK425YlWTJpGrglbVG03+jk2BtzxiGayzp 30HOB/J0/D6eYJ5/ySL+sVOUI8GVyhrUh/6F+IVE8F26xsOpD82x6he0YvWpxLeZPMsQ SsvkbUXyglT9y4wPWCTssnqLAAw7EJYLTGootU696UsvE1WU+xTttGNXZoASfpCU3od9 oFgqgK9GCRjN+9h34NRCYJcEjdJLMxezzfWv40aun35lyMBiz8m0pPzHjr42oCVVs+jt SV8GL0gy3u5qY55nX8CSHwN1FtwqfJS60Y6++SE7n3CXUIiYv7oT8NGmA+fSv74euEzc Rtlw== X-Gm-Message-State: AOAM531HIkQlRUJ0vRFsUrkxooP4oGHOPlc+iDX/s4ykyXaVB6t8ryVW 8yV3VQH2NhOZV+B+PPRYlS7aCy6tro0MkymtOdu6ByWY+07G X-Google-Smtp-Source: ABdhPJzRoRo+2DfK77+NLdQWjCeQEDvaQoFh3DK6DwcUl6DBnkFMg3Ab+qUYOaZUfxvxSI6ha57WphkUhl2T7sV8CDJrj0T9VK0r MIME-Version: 1.0 X-Received: by 2002:a92:d489:: with SMTP id p9mr11751059ilg.123.1605627624161; Tue, 17 Nov 2020 07:40:24 -0800 (PST) Date: Tue, 17 Nov 2020 07:40:24 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000002e09ef05b44f501a@google.com> Subject: KMSAN: uninit-value in dvb_usb_adapter_dvb_init (2) From: syzbot To: glider@google.com, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, mchehab@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: e1617422 kmsan: kmsan_percpu_tstate should be a scalar, no.. git tree: https://github.com/google/kmsan.git master console output: https://syzkaller.appspot.com/x/log.txt?x=164d4712500000 kernel config: https://syzkaller.appspot.com/x/.config?x=4c7345cc7efc5dc4 dashboard link: https://syzkaller.appspot.com/bug?extid=e27b4fd589762b0b9329 compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project.git ca2dcbd030eadbf0aa9b660efe864ff08af6e18b) userspace arch: i386 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+e27b4fd589762b0b9329@syzkaller.appspotmail.com dvb-usb: will pass the complete MPEG2 transport stream to the software demuxer. dvbdev: DVB: registering new adapter (Hauppauge WinTV-NOVA-T usb2) usb 5-1: media controller created dvb-usb: bulk message failed: -22 (5/0) dvb-usb: bulk message failed: -22 (5/0) dvb-usb: bulk message failed: -22 (5/0) ===================================================== BUG: KMSAN: uninit-value in mac_address_string+0x1040/0x1170 lib/vsprintf.c:1281 CPU: 1 PID: 9245 Comm: kworker/1:6 Not tainted 5.9.0-rc8-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: usb_hub_wq hub_event Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x21c/0x280 lib/dump_stack.c:118 kmsan_report+0xf7/0x1e0 mm/kmsan/kmsan_report.c:122 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:201 mac_address_string+0x1040/0x1170 lib/vsprintf.c:1281 pointer+0x9fe/0x1ca0 lib/vsprintf.c:2241 vsnprintf+0x1a4f/0x3610 lib/vsprintf.c:2622 vscnprintf+0xbe/0x1c0 lib/vsprintf.c:2721 vprintk_store+0xf2/0x1440 kernel/printk/printk.c:1951 vprintk_emit+0x320/0x990 kernel/printk/printk.c:2018 vprintk_default+0x90/0xa0 kernel/printk/printk.c:2054 vprintk_func+0x2f7/0x300 kernel/printk/printk_safe.c:393 printk+0x180/0x1c3 kernel/printk/printk.c:2085 dvb_usb_adapter_dvb_init+0x818/0x1300 drivers/media/usb/dvb-usb/dvb-usb-dvb.c:166 dvb_usb_adapter_init drivers/media/usb/dvb-usb/dvb-usb-init.c:83 [inline] dvb_usb_init drivers/media/usb/dvb-usb/dvb-usb-init.c:173 [inline] dvb_usb_device_init+0x27fd/0x3350 drivers/media/usb/dvb-usb/dvb-usb-init.c:287 nova_t_probe+0x73/0x80 drivers/media/usb/dvb-usb/nova-t-usb2.c:156 usb_probe_interface+0xfcc/0x1520 drivers/usb/core/driver.c:396 really_probe+0xebd/0x2420 drivers/base/dd.c:557 driver_probe_device+0x293/0x390 drivers/base/dd.c:738 __device_attach_driver+0x63f/0x830 drivers/base/dd.c:844 bus_for_each_drv+0x2ca/0x3f0 drivers/base/bus.c:431 __device_attach+0x538/0x860 drivers/base/dd.c:912 device_initial_probe+0x4a/0x60 drivers/base/dd.c:959 bus_probe_device+0x177/0x3d0 drivers/base/bus.c:491 device_add+0x399e/0x3f20 drivers/base/core.c:2926 usb_set_configuration+0x395f/0x3f90 drivers/usb/core/message.c:2025 usb_generic_driver_probe+0x138/0x300 drivers/usb/core/generic.c:240 usb_probe_device+0x317/0x570 drivers/usb/core/driver.c:293 really_probe+0xebd/0x2420 drivers/base/dd.c:557 driver_probe_device+0x293/0x390 drivers/base/dd.c:738 __device_attach_driver+0x63f/0x830 drivers/base/dd.c:844 bus_for_each_drv+0x2ca/0x3f0 drivers/base/bus.c:431 __device_attach+0x538/0x860 drivers/base/dd.c:912 device_initial_probe+0x4a/0x60 drivers/base/dd.c:959 bus_probe_device+0x177/0x3d0 drivers/base/bus.c:491 device_add+0x399e/0x3f20 drivers/base/core.c:2926 usb_new_device+0x1bd6/0x2a30 drivers/usb/core/hub.c:2554 hub_port_connect drivers/usb/core/hub.c:5208 [inline] hub_port_connect_change drivers/usb/core/hub.c:5348 [inline] port_event drivers/usb/core/hub.c:5494 [inline] hub_event+0x59b1/0x8640 drivers/usb/core/hub.c:5576 process_one_work+0x1224/0x20a0 kernel/workqueue.c:2269 process_scheduled_works kernel/workqueue.c:2331 [inline] worker_thread+0x129c/0x2740 kernel/workqueue.c:2417 kthread+0x51c/0x560 kernel/kthread.c:293 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:129 [inline] kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:297 __msan_chain_origin+0x57/0xa0 mm/kmsan/kmsan_instr.c:151 nova_t_read_mac_address+0x2d4/0x2f0 drivers/media/usb/dvb-usb/nova-t-usb2.c:144 dvb_usb_adapter_dvb_init+0x774/0x1300 drivers/media/usb/dvb-usb/dvb-usb-dvb.c:165 dvb_usb_adapter_init drivers/media/usb/dvb-usb/dvb-usb-init.c:83 [inline] dvb_usb_init drivers/media/usb/dvb-usb/dvb-usb-init.c:173 [inline] dvb_usb_device_init+0x27fd/0x3350 drivers/media/usb/dvb-usb/dvb-usb-init.c:287 nova_t_probe+0x73/0x80 drivers/media/usb/dvb-usb/nova-t-usb2.c:156 usb_probe_interface+0xfcc/0x1520 drivers/usb/core/driver.c:396 really_probe+0xebd/0x2420 drivers/base/dd.c:557 driver_probe_device+0x293/0x390 drivers/base/dd.c:738 __device_attach_driver+0x63f/0x830 drivers/base/dd.c:844 bus_for_each_drv+0x2ca/0x3f0 drivers/base/bus.c:431 __device_attach+0x538/0x860 drivers/base/dd.c:912 device_initial_probe+0x4a/0x60 drivers/base/dd.c:959 bus_probe_device+0x177/0x3d0 drivers/base/bus.c:491 device_add+0x399e/0x3f20 drivers/base/core.c:2926 usb_set_configuration+0x395f/0x3f90 drivers/usb/core/message.c:2025 usb_generic_driver_probe+0x138/0x300 drivers/usb/core/generic.c:240 usb_probe_device+0x317/0x570 drivers/usb/core/driver.c:293 really_probe+0xebd/0x2420 drivers/base/dd.c:557 driver_probe_device+0x293/0x390 drivers/base/dd.c:738 __device_attach_driver+0x63f/0x830 drivers/base/dd.c:844 bus_for_each_drv+0x2ca/0x3f0 drivers/base/bus.c:431 __device_attach+0x538/0x860 drivers/base/dd.c:912 device_initial_probe+0x4a/0x60 drivers/base/dd.c:959 bus_probe_device+0x177/0x3d0 drivers/base/bus.c:491 device_add+0x399e/0x3f20 drivers/base/core.c:2926 usb_new_device+0x1bd6/0x2a30 drivers/usb/core/hub.c:2554 hub_port_connect drivers/usb/core/hub.c:5208 [inline] hub_port_connect_change drivers/usb/core/hub.c:5348 [inline] port_event drivers/usb/core/hub.c:5494 [inline] hub_event+0x59b1/0x8640 drivers/usb/core/hub.c:5576 process_one_work+0x1224/0x20a0 kernel/workqueue.c:2269 process_scheduled_works kernel/workqueue.c:2331 [inline] worker_thread+0x129c/0x2740 kernel/workqueue.c:2417 kthread+0x51c/0x560 kernel/kthread.c:293 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:129 [inline] kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:297 __msan_chain_origin+0x57/0xa0 mm/kmsan/kmsan_instr.c:151 dibusb_read_eeprom_byte+0x513/0x540 drivers/media/usb/dvb-usb/dibusb-common.c:233 nova_t_read_mac_address+0x1e3/0x2f0 drivers/media/usb/dvb-usb/nova-t-usb2.c:142 dvb_usb_adapter_dvb_init+0x774/0x1300 drivers/media/usb/dvb-usb/dvb-usb-dvb.c:165 dvb_usb_adapter_init drivers/media/usb/dvb-usb/dvb-usb-init.c:83 [inline] dvb_usb_init drivers/media/usb/dvb-usb/dvb-usb-init.c:173 [inline] dvb_usb_device_init+0x27fd/0x3350 drivers/media/usb/dvb-usb/dvb-usb-init.c:287 nova_t_probe+0x73/0x80 drivers/media/usb/dvb-usb/nova-t-usb2.c:156 usb_probe_interface+0xfcc/0x1520 drivers/usb/core/driver.c:396 really_probe+0xebd/0x2420 drivers/base/dd.c:557 driver_probe_device+0x293/0x390 drivers/base/dd.c:738 __device_attach_driver+0x63f/0x830 drivers/base/dd.c:844 bus_for_each_drv+0x2ca/0x3f0 drivers/base/bus.c:431 __device_attach+0x538/0x860 drivers/base/dd.c:912 device_initial_probe+0x4a/0x60 drivers/base/dd.c:959 bus_probe_device+0x177/0x3d0 drivers/base/bus.c:491 device_add+0x399e/0x3f20 drivers/base/core.c:2926 usb_set_configuration+0x395f/0x3f90 drivers/usb/core/message.c:2025 usb_generic_driver_probe+0x138/0x300 drivers/usb/core/generic.c:240 usb_probe_device+0x317/0x570 drivers/usb/core/driver.c:293 really_probe+0xebd/0x2420 drivers/base/dd.c:557 driver_probe_device+0x293/0x390 drivers/base/dd.c:738 __device_attach_driver+0x63f/0x830 drivers/base/dd.c:844 bus_for_each_drv+0x2ca/0x3f0 drivers/base/bus.c:431 __device_attach+0x538/0x860 drivers/base/dd.c:912 device_initial_probe+0x4a/0x60 drivers/base/dd.c:959 bus_probe_device+0x177/0x3d0 drivers/base/bus.c:491 device_add+0x399e/0x3f20 drivers/base/core.c:2926 usb_new_device+0x1bd6/0x2a30 drivers/usb/core/hub.c:2554 hub_port_connect drivers/usb/core/hub.c:5208 [inline] hub_port_connect_change drivers/usb/core/hub.c:5348 [inline] port_event drivers/usb/core/hub.c:5494 [inline] hub_event+0x59b1/0x8640 drivers/usb/core/hub.c:5576 process_one_work+0x1224/0x20a0 kernel/workqueue.c:2269 process_scheduled_works kernel/workqueue.c:2331 [inline] worker_thread+0x129c/0x2740 kernel/workqueue.c:2417 kthread+0x51c/0x560 kernel/kthread.c:293 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 Uninit was created at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:129 [inline] kmsan_internal_poison_shadow+0x5c/0xf0 mm/kmsan/kmsan.c:112 kmsan_slab_alloc+0x8d/0xe0 mm/kmsan/kmsan_hooks.c:80 slab_alloc_node mm/slub.c:2903 [inline] slab_alloc mm/slub.c:2912 [inline] kmem_cache_alloc_trace+0x61e/0xc90 mm/slub.c:2929 kmalloc include/linux/slab.h:554 [inline] dibusb_read_eeprom_byte+0xad/0x540 drivers/media/usb/dvb-usb/dibusb-common.c:226 nova_t_read_mac_address+0x1e3/0x2f0 drivers/media/usb/dvb-usb/nova-t-usb2.c:142 dvb_usb_adapter_dvb_init+0x774/0x1300 drivers/media/usb/dvb-usb/dvb-usb-dvb.c:165 dvb_usb_adapter_init drivers/media/usb/dvb-usb/dvb-usb-init.c:83 [inline] dvb_usb_init drivers/media/usb/dvb-usb/dvb-usb-init.c:173 [inline] dvb_usb_device_init+0x27fd/0x3350 drivers/media/usb/dvb-usb/dvb-usb-init.c:287 nova_t_probe+0x73/0x80 drivers/media/usb/dvb-usb/nova-t-usb2.c:156 usb_probe_interface+0xfcc/0x1520 drivers/usb/core/driver.c:396 really_probe+0xebd/0x2420 drivers/base/dd.c:557 driver_probe_device+0x293/0x390 drivers/base/dd.c:738 __device_attach_driver+0x63f/0x830 drivers/base/dd.c:844 bus_for_each_drv+0x2ca/0x3f0 drivers/base/bus.c:431 __device_attach+0x538/0x860 drivers/base/dd.c:912 device_initial_probe+0x4a/0x60 drivers/base/dd.c:959 bus_probe_device+0x177/0x3d0 drivers/base/bus.c:491 device_add+0x399e/0x3f20 drivers/base/core.c:2926 usb_set_configuration+0x395f/0x3f90 drivers/usb/core/message.c:2025 usb_generic_driver_probe+0x138/0x300 drivers/usb/core/generic.c:240 usb_probe_device+0x317/0x570 drivers/usb/core/driver.c:293 really_probe+0xebd/0x2420 drivers/base/dd.c:557 driver_probe_device+0x293/0x390 drivers/base/dd.c:738 __device_attach_driver+0x63f/0x830 drivers/base/dd.c:844 bus_for_each_drv+0x2ca/0x3f0 drivers/base/bus.c:431 __device_attach+0x538/0x860 drivers/base/dd.c:912 device_initial_probe+0x4a/0x60 drivers/base/dd.c:959 bus_probe_device+0x177/0x3d0 drivers/base/bus.c:491 device_add+0x399e/0x3f20 drivers/base/core.c:2926 usb_new_device+0x1bd6/0x2a30 drivers/usb/core/hub.c:2554 hub_port_connect drivers/usb/core/hub.c:5208 [inline] hub_port_connect_change drivers/usb/core/hub.c:5348 [inline] port_event drivers/usb/core/hub.c:5494 [inline] hub_event+0x59b1/0x8640 drivers/usb/core/hub.c:5576 process_one_work+0x1224/0x20a0 kernel/workqueue.c:2269 process_scheduled_works kernel/workqueue.c:2331 [inline] worker_thread+0x129c/0x2740 kernel/workqueue.c:2417 kthread+0x51c/0x560 kernel/kthread.c:293 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 ===================================================== --- This report is generated by a bot. 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