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 91486C433DB for ; Tue, 16 Mar 2021 08:53:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5C18765001 for ; Tue, 16 Mar 2021 08:53:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235554AbhCPIwl (ORCPT ); Tue, 16 Mar 2021 04:52:41 -0400 Received: from mail-io1-f69.google.com ([209.85.166.69]:49181 "EHLO mail-io1-f69.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231538AbhCPIvS (ORCPT ); Tue, 16 Mar 2021 04:51:18 -0400 Received: by mail-io1-f69.google.com with SMTP id d4so22703803ioc.16 for ; Tue, 16 Mar 2021 01:51:17 -0700 (PDT) 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:in-reply-to:message-id:subject :from:to; bh=4QUdhKjlsSq0ONrUjGfj14EmJ4tiOuVx+A6yHTuWHx0=; b=JUKeKE/9cWfm+GBDdQt9HrCB1YVe0Lye7nCqRAmXGxRP/r7ChKU1V1rnk76j9woiVp B+OWIYtRg6OrlR0OXrGKK5aM69Fzn/CHSmzLpUmN/xSjuIh8dqbPhYG9RQFGkZOlVUK6 Rs/lp+TDlezbogxuGk1mo/5YoL/KiVW+Nuuw7dOJGCYMSmrS66Ye0EyLovzQvUTN98iF 1OItpAJjFSgYpzA8xjsr0uF4ZewqNjMC2Aik3bWzhyVImkkIQ/F73pSByp3xUgXKBUbz T5Nxl4LicK5KT0klDugZaIDXMr0xN8xLXIKCdnln5Do384U78KTg4j4vYcyHEDsFyoYp l7nA== X-Gm-Message-State: AOAM532CVb5Sg16hZPhHCmPQqhQXF8Q7744kWEqdOso73fvJ0NF60BZI NgC4ZqikEhZlCO3NpVYsBJWqFjVgURJEWAeugHfiGO4OZFhx X-Google-Smtp-Source: ABdhPJxUrnc3gunKqba2bVgfn2w+0mX2XveK7Foo2gwEUHtgrSjMx2zAsr+BF2CLc8DmPxHrG09i6azSUi5+9aMNalj0nNJCyegN MIME-Version: 1.0 X-Received: by 2002:a6b:d20e:: with SMTP id q14mr2645087iob.200.1615884677498; Tue, 16 Mar 2021 01:51:17 -0700 (PDT) Date: Tue, 16 Mar 2021 01:51:17 -0700 In-Reply-To: <00000000000007287c05bd401384@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000334b4905bda378e9@google.com> Subject: Re: [syzbot] KMSAN: uninit-value in number (3) From: syzbot To: glider@google.com, hverkuil@xs4all.nl, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, mchehab@kernel.org, paskripkin@gmail.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org syzbot has found a reproducer for the following issue on: HEAD commit: 29ad81a1 arch/x86: add missing include to sparsemem.h git tree: https://github.com/google/kmsan.git master console output: https://syzkaller.appspot.com/x/log.txt?x=115abb3ed00000 kernel config: https://syzkaller.appspot.com/x/.config?x=8b976581f6bd1e7d dashboard link: https://syzkaller.appspot.com/bug?extid=a4e309017a5f3a24c7b3 compiler: Debian clang version 11.0.1-2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1488adc6d00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=14c409b2d00000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+a4e309017a5f3a24c7b3@syzkaller.appspotmail.com ===================================================== BUG: KMSAN: uninit-value in number+0x54f/0x2540 lib/vsprintf.c:442 CPU: 0 PID: 1983 Comm: kworker/0:2 Not tainted 5.11.0-rc7-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:79 [inline] dump_stack+0x21c/0x280 lib/dump_stack.c:120 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197 number+0x54f/0x2540 lib/vsprintf.c:442 vsnprintf+0x1cd6/0x3600 lib/vsprintf.c:2685 vprintk_store+0x2ab/0x1df0 kernel/printk/printk.c:1984 vprintk_emit+0x29a/0x7f0 kernel/printk/printk.c:2092 vprintk_default+0x86/0xa0 kernel/printk/printk.c:2126 vprintk_func+0x2ed/0x2f0 kernel/printk/printk_safe.c:393 printk+0x180/0x1cd kernel/printk/printk.c:2157 sq905_read_data+0x630/0x650 drivers/media/usb/gspca/sq905.c:184 sd_init+0x184/0x530 drivers/media/usb/gspca/sq905.c:329 gspca_dev_probe2+0x129f/0x23f0 drivers/media/usb/gspca/gspca.c:1532 gspca_dev_probe+0x3db/0x440 drivers/media/usb/gspca/gspca.c:1606 sd_probe+0x8d/0xa0 drivers/media/usb/gspca/gl860/gl860.c:511 usb_probe_interface+0xfcc/0x1520 drivers/usb/core/driver.c:396 really_probe+0xe15/0x24d0 drivers/base/dd.c:558 driver_probe_device+0x29d/0x3a0 drivers/base/dd.c:740 __device_attach_driver+0x63f/0x830 drivers/base/dd.c:846 bus_for_each_drv+0x2c8/0x3f0 drivers/base/bus.c:431 __device_attach+0x56a/0x890 drivers/base/dd.c:914 device_initial_probe+0x4a/0x60 drivers/base/dd.c:961 bus_probe_device+0x17e/0x3d0 drivers/base/bus.c:491 device_add+0x2c15/0x31d0 drivers/base/core.c:3109 usb_set_configuration+0x3872/0x3eb0 drivers/usb/core/message.c:2164 usb_generic_driver_probe+0x138/0x300 drivers/usb/core/generic.c:238 usb_probe_device+0x317/0x570 drivers/usb/core/driver.c:293 really_probe+0xe15/0x24d0 drivers/base/dd.c:558 driver_probe_device+0x29d/0x3a0 drivers/base/dd.c:740 __device_attach_driver+0x63f/0x830 drivers/base/dd.c:846 bus_for_each_drv+0x2c8/0x3f0 drivers/base/bus.c:431 __device_attach+0x56a/0x890 drivers/base/dd.c:914 device_initial_probe+0x4a/0x60 drivers/base/dd.c:961 bus_probe_device+0x17e/0x3d0 drivers/base/bus.c:491 device_add+0x2c15/0x31d0 drivers/base/core.c:3109 usb_new_device+0x1bd4/0x2a30 drivers/usb/core/hub.c:2555 hub_port_connect drivers/usb/core/hub.c:5223 [inline] hub_port_connect_change drivers/usb/core/hub.c:5363 [inline] port_event drivers/usb/core/hub.c:5509 [inline] hub_event+0x5b99/0x8870 drivers/usb/core/hub.c:5591 process_one_work+0x1219/0x1fe0 kernel/workqueue.c:2275 worker_thread+0x10ec/0x2340 kernel/workqueue.c:2421 kthread+0x521/0x560 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296 Local variable ----act_len@sq905_read_data created at: sq905_read_data+0x87/0x650 drivers/media/usb/gspca/sq905.c:163 sq905_read_data+0x87/0x650 drivers/media/usb/gspca/sq905.c:163 ===================================================== ===================================================== BUG: KMSAN: uninit-value in number+0x8d9/0x2540 lib/vsprintf.c:463 CPU: 0 PID: 1983 Comm: kworker/0:2 Tainted: G B 5.11.0-rc7-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:79 [inline] dump_stack+0x21c/0x280 lib/dump_stack.c:120 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197 number+0x8d9/0x2540 lib/vsprintf.c:463 vsnprintf+0x1cd6/0x3600 lib/vsprintf.c:2685 vprintk_store+0x2ab/0x1df0 kernel/printk/printk.c:1984 vprintk_emit+0x29a/0x7f0 kernel/printk/printk.c:2092 vprintk_default+0x86/0xa0 kernel/printk/printk.c:2126 vprintk_func+0x2ed/0x2f0 kernel/printk/printk_safe.c:393 printk+0x180/0x1cd kernel/printk/printk.c:2157 sq905_read_data+0x630/0x650 drivers/media/usb/gspca/sq905.c:184 sd_init+0x184/0x530 drivers/media/usb/gspca/sq905.c:329 gspca_dev_probe2+0x129f/0x23f0 drivers/media/usb/gspca/gspca.c:1532 gspca_dev_probe+0x3db/0x440 drivers/media/usb/gspca/gspca.c:1606 sd_probe+0x8d/0xa0 drivers/media/usb/gspca/gl860/gl860.c:511 usb_probe_interface+0xfcc/0x1520 drivers/usb/core/driver.c:396 really_probe+0xe15/0x24d0 drivers/base/dd.c:558 driver_probe_device+0x29d/0x3a0 drivers/base/dd.c:740 __device_attach_driver+0x63f/0x830 drivers/base/dd.c:846 bus_for_each_drv+0x2c8/0x3f0 drivers/base/bus.c:431 __device_attach+0x56a/0x890 drivers/base/dd.c:914 device_initial_probe+0x4a/0x60 drivers/base/dd.c:961 bus_probe_device+0x17e/0x3d0 drivers/base/bus.c:491 device_add+0x2c15/0x31d0 drivers/base/core.c:3109 usb_set_configuration+0x3872/0x3eb0 drivers/usb/core/message.c:2164 usb_generic_driver_probe+0x138/0x300 drivers/usb/core/generic.c:238 usb_probe_device+0x317/0x570 drivers/usb/core/driver.c:293 really_probe+0xe15/0x24d0 drivers/base/dd.c:558 driver_probe_device+0x29d/0x3a0 drivers/base/dd.c:740 __device_attach_driver+0x63f/0x830 drivers/base/dd.c:846 bus_for_each_drv+0x2c8/0x3f0 drivers/base/bus.c:431 __device_attach+0x56a/0x890 drivers/base/dd.c:914 device_initial_probe+0x4a/0x60 drivers/base/dd.c:961 bus_probe_device+0x17e/0x3d0 drivers/base/bus.c:491 device_add+0x2c15/0x31d0 drivers/base/core.c:3109 usb_new_device+0x1bd4/0x2a30 drivers/usb/core/hub.c:2555 hub_port_connect drivers/usb/core/hub.c:5223 [inline] hub_port_connect_change drivers/usb/core/hub.c:5363 [inline] port_event drivers/usb/core/hub.c:5509 [inline] hub_event+0x5b99/0x8870 drivers/usb/core/hub.c:5591 process_one_work+0x1219/0x1fe0 kernel/workqueue.c:2275 worker_thread+0x10ec/0x2340 kernel/workqueue.c:2421 kthread+0x521/0x560 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296 Local variable ----act_len@sq905_read_data created at: sq905_read_data+0x87/0x650 drivers/media/usb/gspca/sq905.c:163 sq905_read_data+0x87/0x650 drivers/media/usb/gspca/sq905.c:163 ===================================================== ===================================================== BUG: KMSAN: uninit-value in put_dec+0x1dc/0x260 lib/vsprintf.c:258 CPU: 0 PID: 1983 Comm: kworker/0:2 Tainted: G B 5.11.0-rc7-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:79 [inline] dump_stack+0x21c/0x280 lib/dump_stack.c:120 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197 put_dec+0x1dc/0x260 lib/vsprintf.c:258 number+0x896/0x2540 lib/vsprintf.c:476 vsnprintf+0x1cd6/0x3600 lib/vsprintf.c:2685 vprintk_store+0x2ab/0x1df0 kernel/printk/printk.c:1984 vprintk_emit+0x29a/0x7f0 kernel/printk/printk.c:2092 vprintk_default+0x86/0xa0 kernel/printk/printk.c:2126 vprintk_func+0x2ed/0x2f0 kernel/printk/printk_safe.c:393 printk+0x180/0x1cd kernel/printk/printk.c:2157 sq905_read_data+0x630/0x650 drivers/media/usb/gspca/sq905.c:184 sd_init+0x184/0x530 drivers/media/usb/gspca/sq905.c:329 gspca_dev_probe2+0x129f/0x23f0 drivers/media/usb/gspca/gspca.c:1532 gspca_dev_probe+0x3db/0x440 drivers/media/usb/gspca/gspca.c:1606 sd_probe+0x8d/0xa0 drivers/media/usb/gspca/gl860/gl860.c:511 usb_probe_interface+0xfcc/0x1520 drivers/usb/core/driver.c:396 really_probe+0xe15/0x24d0 drivers/base/dd.c:558 driver_probe_device+0x29d/0x3a0 drivers/base/dd.c:740 __device_attach_driver+0x63f/0x830 drivers/base/dd.c:846 bus_for_each_drv+0x2c8/0x3f0 drivers/base/bus.c:431 __device_attach+0x56a/0x890 drivers/base/dd.c:914 device_initial_probe+0x4a/0x60 drivers/base/dd.c:961 bus_probe_device+0x17e/0x3d0 drivers/base/bus.c:491 device_add+0x2c15/0x31d0 drivers/base/core.c:3109 usb_set_configuration+0x3872/0x3eb0 drivers/usb/core/message.c:2164 usb_generic_driver_probe+0x138/0x300 drivers/usb/core/generic.c:238 usb_probe_device+0x317/0x570 drivers/usb/core/driver.c:293 really_probe+0xe15/0x24d0 drivers/base/dd.c:558 driver_probe_device+0x29d/0x3a0 drivers/base/dd.c:740 __device_attach_driver+0x63f/0x830 drivers/base/dd.c:846 bus_for_each_drv+0x2c8/0x3f0 drivers/base/bus.c:431 __device_attach+0x56a/0x890 drivers/base/dd.c:914 device_initial_probe+0x4a/0x60 drivers/base/dd.c:961 bus_probe_device+0x17e/0x3d0 drivers/base/bus.c:491 device_add+0x2c15/0x31d0 drivers/base/core.c:3109 usb_new_device+0x1bd4/0x2a30 drivers/usb/core/hub.c:2555 hub_port_connect drivers/usb/core/hub.c:5223 [inline] hub_port_connect_change drivers/usb/core/hub.c:5363 [inline] port_event drivers/usb/core/hub.c:5509 [inline] hub_event+0x5b99/0x8870 drivers/usb/core/hub.c:5591 process_one_work+0x1219/0x1fe0 kernel/workqueue.c:2275 worker_thread+0x10ec/0x2340 kernel/workqueue.c:2421 kthread+0x521/0x560 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296 Local variable ----act_len@sq905_read_data created at: sq905_read_data+0x87/0x650 drivers/media/usb/gspca/sq905.c:163 sq905_read_data+0x87/0x650 drivers/media/usb/gspca/sq905.c:163 ===================================================== ===================================================== BUG: KMSAN: uninit-value in put_dec_trunc8+0x31a/0x3c lib/vsprintf.c:193 Lost 539 message(s)! ===================================================== BUG: KMSAN: uninit-value in number+0x54f/0x2540 lib/vsprintf.c:442 CPU: 0 PID: 1983 Comm: kworker/0:2 Tainted: G B 5.11.0-rc7-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:79 [inline] dump_stack+0x21c/0x280 lib/dump_stack.c:120 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197 number+0x54f/0x2540 lib/vsprintf.c:442 vsnprintf+0x1cd6/0x3600 lib/vsprintf.c:2685 vprintk_store+0x2ab/0x1df0 kernel/printk/printk.c:1984 vprintk_emit+0x29a/0x7f0 kernel/printk/printk.c:2092 vprintk_default+0x86/0xa0 kernel/printk/printk.c:2126 vprintk_func+0x2ed/0x2f0 kernel/printk/printk_safe.c:393 printk+0x180/0x1cd kernel/printk/printk.c:2157 sq905_read_data+0x630/0x650 drivers/media/usb/gspca/sq905.c:184 sd_init+0x184/0x530 drivers/media/usb/gspca/sq905.c:329 gspca_dev_probe2+0x129f/0x23f0 drivers/media/usb/gspca/gspca.c:1532 gspca_dev_probe+0x3db/0x440 drivers/media/usb/gspca/gspca.c:1606 sd_probe+0x8d/0xa0 drivers/media/usb/gspca/gl860/gl860.c:511 usb_probe_interface+0xfcc/0x1520 drivers/usb/core/driver.c:396 really_probe+0xe15/0x24d0 drivers/base/dd.c:558 driver_probe_device+0x29d/0x3a0 drivers/base/dd.c:740 __device_attach_driver+0x63f/0x830 drivers/base/dd.c:846 bus_for_each_drv+0x2c8/0x3f0 drivers/base/bus.c:431 __device_attach+0x56a/0x890 drivers/base/dd.c:914 device_initial_probe+0x4a/0x60 drivers/base/dd.c:961 bus_probe_device+0x17e/0x3d0 drivers/base/bus.c:491 device_add+0x2c15/0x31d0 drivers/base/core.c:3109 usb_set_configuration+0x3872/0x3eb0 drivers/usb/core/message.c:2164 usb_generic_driver_probe+0x138/0x300 drivers/usb/core/generic.c:238 usb_probe_device+0x317/0x570 drivers/usb/core/driver.c:293 really_probe+0xe15/0x24d0 drivers/base/dd.c:558 driver_probe_device+0x29d/0x3a0 drivers/base/dd.c:740 __device_attach_driver+0x63f/0x830 drivers/base/dd.c:846 bus_for_each_drv+0x2c8/0x3f0 drivers/base/bus.c:431 __device_attach+0x56a/0x890 drivers/base/dd.c:914 device_initial_probe+0x4a/0x60 drivers/base/dd.c:961 bus_probe_device+0x17e/0x3d0 drivers/base/bus.c:491 device_add+0x2c15/0x31d0 drivers/base/core.c:3109 usb_new_device+0x1bd4/0x2a30 drivers/usb/core/hub.c:2555 hub_port_connect drivers/usb/core/hub.c:5223 [inline] hub_port_connect_change drivers/usb/core/hub.c:5363 [inline] port_event drivers/usb/core/hub.c:5509 [inline] hub_event+0x5b99/0x8870 drivers/usb/core/hub.c:5591 process_one_work+0x1219/0x1fe0 kernel/workqueue.c:2275 process_scheduled_works kernel/workqueue.c:2337 [inline] worker_thread+0x12bc/0x2340 kernel/workqueue.c:2423 kthread+0x521/0x560 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296 Local variable ----act_len@sq905_read_data created at: sq905_read_data+0x87/0x650 drivers/media/usb/gspca/sq905.c:163 sq905_read_data+0x87/0x650 drivers/media/usb/gspca/sq905.c:163 ===================================================== ===================================================== BUG: KMSAN: uninit-value in number+0x8d9/0x2540 lib/vsprintf.c:463 CPU: 0 PID: 1983 Comm: kworker/0:2 Tainted: G B 5.11.0-rc7-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:79 [inline] dump_stack+0x21c/0x280 lib/dump_stack.c:120 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197 number+0x8d9/0x2540 lib/vsprintf.c:463 vsnprintf+0x1cd6/0x3600 lib/vsprintf.c:2685 vprintk_store+0x2ab/0x1df0 kernel/printk/printk.c:1984 vprintk_emit+0x29a/0x7f0 kernel/printk/printk.c:2092 vprintk_default+0x86/0xa0 kernel/printk/printk.c:2126 vprintk_func+0x2ed/0x2f0 kernel/printk/printk_safe.c:393 printk+0x180/0x1cd kernel/printk/printk.c:2157 sq905_read_data+0x630/0x650 drivers/media/usb/gspca/sq905.c:184 sd_init+0x184/0x530 drivers/media/usb/gspca/sq905.c:329 gspca_dev_probe2+0x129f/0x23f0 drivers/media/usb/gspca/gspca.c:1532 gspca_dev_probe+0x3db/0x440 drivers/media/usb/gspca/gspca.c:1606 sd_probe+0x8d/0xa0 drivers/media/usb/gspca/gl860/gl860.c:511 usb_probe_interface+0xfcc/0x1520 drivers/usb/core/driver.c:396 really_probe+0xe15/0x24d0 drivers/base/dd.c:558 driver_probe_device+0x29d/0x3a0 drivers/base/dd.c:740 __device_attach_driver+0x63f/0x830 drivers/base/dd.c:846 bus_for_each_drv+0x2c8/0x3f0 drivers/base/bus.c:431 __device_attach+0x56a/0x890 drivers/base/dd.c:914 device_initial_probe+0x4a/0x60 drivers/base/dd.c:961 bus_probe_device+0x17e/0x3d0 drivers/base/bus.c:491 device_add+0x2c15/0x31d0 drivers/base/core.c:3109 usb_set_configuration+0x3872/0x3eb0 drivers/usb/core/message.c:2164 usb_generic_driver_probe+0x138/0x300 drivers/usb/core/generic.c:238 usb_probe_device+0x317/0x570 drivers/usb/core/driver.c:293 really_probe+0xe15/0x24d0 drivers/base/dd.c:558 driver_probe_device+0x29d/0x3a0 drivers/base/dd.c:740 __device_attach_driver+0x63f/0x830 drivers/base/dd.c:846 bus_for_each_drv+0x2c8/0x3f0 drivers/base/bus.c:431 __device_attach+0x56a/0x890 drivers/base/dd.c:914 device_initial_probe+0x4a/0x60 drivers/base/dd.c:961 bus_probe_device+0x17e/0x3d0 drivers/base/bus.c:491 device_add+0x2c15/0x31d0 drivers/base/core.c:3109 usb_new_device+0x1bd4/0x2a30 drivers/usb/core/hub.c:2555 hub_port_connect drivers/usb/core/hub.c:5223 [inline] hub_port_connect_change drivers/usb/core/hub.c:5363 [inline] port_event drivers/usb/core/hub.c:5509 [inline] hub_event+0x5b99/0x8870 drivers/usb/core/hub.c:5591 process_one_work+0x1219/0x1fe0 kernel/workqueue.c:2275 process_scheduled_works kernel/workqueue.c:2337 [inline] worker_thread+0x12bc/0x2340 kernel/workqueue.c:2423 kthread+0x521/0x560 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296 Local variable ----act_len@sq905_read_data created at: sq905_read_data+0x87/0x650 drivers/media/usb/gspca/sq905.c:163 sq905_read_data+0x87/0x650 drivers/media/usb/gspca/sq905.c:163 ===================================================== ===================================================== BUG: KMSAN: uninit-value in put_dec+0x1dc/0x260 lib/vsprintf.c:258 CPU: 0 PID: 1983 Comm: kworker/0:2 Tainted: G B 5.11.0-rc7-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:79 [inline] dump_stack+0x21c/0x280 lib/dump_stack.c:120 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197 put_dec+0x1dc/0x260 lib/vsprintf.c:258 number+0x896/0x2540 lib/vsprintf.c:476 vsnprintf+0x1cd6/0x3600 lib/vsprintf.c:2685 vprintk_store+0x2ab/0x1df0 kernel/printk/printk.c:1984 vprintk_emit+0x29a/0x7f0 kernel/printk/printk.c:2092 vprintk_default+0x86/0xa0 kernel/printk/printk.c:2126 vprintk_func+0x2ed/0x2f0 kernel/printk/printk_safe.c:393 printk+0x180/0x1cd kernel/printk/printk.c:2157 sq905_read_data+0x630/0x650 drivers/media/usb/gspca/sq905.c:184 sd_init+0x184/0x530 drivers/media/usb/gspca/sq905.c:329 gspca_dev_probe2+0x129f/0x23f0 drivers/media/usb/gspca/gspca.c:1532 gspca_dev_probe+0x3db/0x440 drivers/media/usb/gspca/gspca.c:1606 sd_probe+0x8d/0xa0 drivers/media/usb/gspca/gl860/gl860.c:511 usb_probe_interface+0xfcc/0x1520 drivers/usb/core/driver.c:396 really_probe+0xe15/0x24d0 drivers/base/dd.c:558 driver_probe_device+0x29d/0x3a0 drivers/base/dd.c:740 __device_attach_driver+0x63f/0x830 drivers/base/dd.c:846 bus_for_each_drv+0x2c8/0x3f0 drivers/base/bus.c:431 __device_attach+0x56a/0x890 drivers/base/dd.c:914 device_initial_probe+0x4a/0x60 drivers/base/dd.c:961 bus_probe_device+0x17e/0x3d0 drivers/base/bus.c:491 device_add+0x2c15/0x31d0 drivers/base/core.c:3109 usb_set_configuration+0x3872/0x3eb0 drivers/usb/core/message.c:2164 usb_generic_driver_probe+0x138/0x300 drivers/usb/core/generic.c:238 usb_probe_device+0x317/0x570 drivers/usb/core/driver.c:293 really_probe+0xe15/0x24d0 drivers/base/dd.c:558 driver_probe_device+0x29d/0x3a0 drivers/base/dd.c:740 __device_attach_driver+0x63f/0x830 drivers/base/dd.c:846 bus_for_each_drv+0x2c8/0x3f0 drivers/base/bus.c:431 __device_attach+0x56a/0x890 drivers/base/dd.c:914 device_initial_probe+0x4a/0x60 drivers/base/dd.c:961 bus_probe_device+0x17e/0x3d0 drivers/base/bus.c:491 device_add+0x2c15/0x31d0 drivers/base/core.c:3109 usb_new_device+0x1bd4/0x2a30 drivers/usb/core/hub.c:2555 hub_port_connect drivers/usb/core/hub.c:5223 [inline] hub_port_connect_change drivers/usb/core/hub.c:5363 [inline] port_event drivers/usb/core/hub.c:5509 [inline] hub_event+0x5b99/0x8870 drivers/usb/core/hub.c:5591 process_one_work+0x1219/0x1fe0 kernel/workqueue.c:2275 process_scheduled_works kernel/workqueue.c:2337 [inline] worker_thread+0x12bc/0x2340 kernel/workqueue.c:2423 kthread+0x521/0x560 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296 Local variable ----act_len@sq905_read_data created at: sq905_read_data+0x87/0x650 drivers/media/usb/gspca/sq905.c:163 sq905_read_data+0x87/0x650 drivers/media/usb/gspca/sq905.c:163 ===================================================== ====================================== Lost 547 message(s)! ===================================================== BUG: KMSAN: uninit-value in number+0x54f/0x2540 lib/vsprintf.c:442 CPU: 0 PID: 1983 Comm: kworker/0:2 Tainted: G B 5.11.0-rc7-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:79 [inline] dump_stack+0x21c/0x280 lib/dump_stack.c:120 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197 number+0x54f/0x2540 lib/vsprintf.c:442 vsnprintf+0x1cd6/0x3600 lib/vsprintf.c:2685 vprintk_store+0x2ab/0x1df0 kernel/printk/printk.c:1984 vprintk_emit+0x29a/0x7f0 kernel/printk/printk.c:2092 vprintk_default+0x86/0xa0 kernel/printk/printk.c:2126 vprintk_func+0x2ed/0x2f0 kernel/printk/printk_safe.c:393 printk+0x180/0x1cd kernel/printk/printk.c:2157 sq905_read_data+0x630/0x650 drivers/media/usb/gspca/sq905.c:184 sd_init+0x184/0x530 drivers/media/usb/gspca/sq905.c:329 gspca_dev_probe2+0x129f/0x23f0 drivers/media/usb/gspca/gspca.c:1532 gspca_dev_probe+0x3db/0x440 drivers/media/usb/gspca/gspca.c:1606 sd_probe+0x8d/0xa0 drivers/media/usb/gspca/gl860/gl860.c:511 usb_probe_interface+0xfcc/0x1520 drivers/usb/core/driver.c:396 really_probe+0xe15/0x24d0 drivers/base/dd.c:558 driver_probe_device+0x29d/0x3a0 drivers/base/dd.c:740 __device_attach_driver+0x63f/0x830 drivers/base/dd.c:846 bus_for_each_drv+0x2c8/0x3f0 drivers/base/bus.c:431 __device_attach+0x56a/0x890 drivers/base/dd.c:914 device_initial_probe+0x4a/0x60 drivers/base/dd.c:961 bus_probe_device+0x17e/0x3d0 drivers/base/bus.c:491 device_add+0x2c15/0x31d0 drivers/base/core.c:3109 usb_set_configuration+0x3872/0x3eb0 drivers/usb/core/message.c:2164 usb_generic_driver_probe+0x138/0x300 drivers/usb/core/generic.c:238 usb_probe_device+0x317/0x570 drivers/usb/core/driver.c:293 really_probe+0xe15/0x24d0 drivers/base/dd.c:558 driver_probe_device+0x29d/0x3a0 drivers/base/dd.c:740 __device_attach_driver+0x63f/0x830 drivers/base/dd.c:846 bus_for_each_drv+0x2c8/0x3f0 drivers/base/bus.c:431 __device_attach+0x56a/0x890 drivers/base/dd.c:914 device_initial_probe+0x4a/0x60 drivers/base/dd.c:961 bus_probe_device+0x17e/0x3d0 drivers/base/bus.c:491 device_add+0x2c15/0x31d0 drivers/base/core.c:3109 usb_new_device+0x1bd4/0x2a30 drivers/usb/core/hub.c:2555 hub_port_connect drivers/usb/core/hub.c:5223 [inline] hub_port_connect_change drivers/usb/core/hub.c:5363 [inline] port_event drivers/usb/core/hub.c:5509 [inline] hub_event+0x5b99/0x8870 drivers/usb/core/hub.c:5591 process_one_work+0x1219/0x1fe0 kernel/workqueue.c:2275 process_scheduled_works kernel/workqueue.c:2337 [inline] worker_thread+0x12bc/0x2340 kernel/workqueue.c:2423 kthread+0x521/0x560 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296 Local variable ----act_len@sq905_read_data created at: sq905_read_data+0x87/0x650 drivers/media/usb/gspca/sq905.c:163 sq905_read_data+0x87/0x650 drivers/media/usb/gspca/sq905.c:163 ===================================================== ===================================================== BUG: KMSAN: uninit-value in number+0x8d9/0x2540 lib/vsprintf.c:463 CPU: 0 PID: 1983 Comm: kworker/0:2 Tainted: G B 5.11.0-rc7-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:79 [inline] dump_stack+0x21c/0x280 lib/dump_stack.c:120 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197 number+0x8d9/0x2540 lib/vsprintf.c:463 vsnprintf+0x1cd6/0x3600 lib/vsprintf.c:2685 vprintk_store+0x2ab/0x1df0 kernel/printk/printk.c:1984 vprintk_emit+0x29a/0x7f0 kernel/printk/printk.c:2092 vprintk_default+0x86/0xa0 kernel/printk/printk.c:2126 vprintk_func+0x2ed/0x2f0 kernel/printk/printk_safe.c:393 printk+0x180/0x1cd kernel/printk/printk.c:2157 sq905_read_data+0x630/0x650 drivers/media/usb/gspca/sq905.c:184 sd_init+0x184/0x530 drivers/media/usb/gspca/sq905.c:329 gspca_dev_probe2+0x129f/0x23f0 drivers/media/usb/gspca/gspca.c:1532 gspca_dev_probe+0x3db/0x440 drivers/media/usb/gspca/gspca.c:1606 sd_probe+0x8d/0xa0 drivers/media/usb/gspca/gl860/gl860.c:511 usb_probe_interface+0xfcc/0x1520 drivers/usb/core/driver.c:396 really_probe+0xe15/0x24d0 drivers/base/dd.c:558 driver_probe_device+0x29d/0x3a0 drivers/base/dd.c:740 __device_attach_driver+0x63f/0x830 drivers/base/dd.c:846 bus_for_each_drv+0x2c8/0x3f0 drivers/base/bus.c:431 __device_attach+0x56a/0x890 drivers/base/dd.c:914 device_initial_probe+0x4a/0x60 drivers/base/dd.c:961 bus_probe_device+0x17e/0x3d0 drivers/base/bus.c:491 device_add+0x2c15/0x31d0 drivers/base/core.c:3109 usb_set_configuration+0x3872/0x3eb0 drivers/usb/core/message.c:2164 usb_generic_driver_probe+0x138/0x300 drivers/usb/core/generic.c:238 usb_probe_device+0x317/0x570 drivers/usb/core/driver.c:293 really_probe+0xe15/0x24d0 drivers/base/dd.c:558 driver_probe_device+0x29d/0x3a0 drivers/base/dd.c:740 __device_attach_driver+0x63f/0x830 drivers/base/dd.c:846 bus_for_each_drv+0x2c8/0x3f0 drivers/base/bus.c:431 __device_attach+0x56a/0x890 drivers/base/dd.c:914 device_initial_probe+0x4a/0x60 drivers/base/dd.c:961 bus_probe_device+0x17e/0x3d0 drivers/base/bus.c:491 device_add+0x2c15/0x31d0 drivers/base/core.c:3109 usb_new_device+0x1bd4/0x2a30 drivers/usb/core/hub.c:2555 hub_port_connect drivers/usb/core/hub.c:5223 [inline] hub_port_connect_change drivers/usb/core/hub.c:5363 [inline] port_event drivers/usb/core/hub.c:5509 [inline] hub_event+0x5b99/0x8870 drivers/usb/core/hub.c:5591 process_one_work+0x1219/0x1fe0 kernel/workqueue.c:2275 process_scheduled_works kernel/workqueue.c:2337 [inline] worker_thread+0x12bc/0x2340 kernel/workqueue.c:2423 kthread+0x521/0x560 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296 Local variable ----act_len@sq905_read_data created at: sq905_read_data+0x87/0x650 drivers/media/usb/gspca/sq905.c:163 sq905_read_data+0x87/0x650 drivers/media/usb/gspca/sq905.c:163 ===================================================== ===================================================== BUG: KMSAN: uninit-value in put_dec+0x1dc/0x260 lib/vsprintf.c:258 CPU: 0 PID: 1983 Comm: kworker/0:2 Tainted: G B 5.11.0-rc7-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:79 [inline] dump_stack+0x21c/0x280 lib/dump_stack.c:120 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197 put_dec+0x1dc/0x260 lib/vsprintf.c:258 number+0x896/0x2540 lib/vsprintf.c:476 vsnprintf+0x1cd6/0x3600 lib/vsprintf.c:2685 vprintk_store+0x2ab/0x1df0 kernel/printk/printk.c:1984 vprintk_emit+0x29a/0x7f0 kernel/printk/printk.c:2092 vprintk_default+0x86/0xa0 kernel/printk/printk.c:2126 vprintk_func+0x2ed/0x2f0 kernel/printk/printk_safe.c:393 printk+0x180/0x1cd kernel/printk/printk.c:2157 sq905_read_data+0x630/0x650 drivers/media/usb/gspca/sq905.c:184 sd_init+0x184/0x530 drivers/media/usb/gspca/sq905.c:329 gspca_dev_probe2+0x129f/0x23f0 drivers/media/usb/gspca/gspca.c:1532 gspca_dev_probe+0x3db/0x440 drivers/media/usb/gspca/gspca.c:1606 sd_probe+0x8d/0xa0 drivers/media/usb/gspca/gl860/gl860.c:511 usb_probe_interface+0xfcc/0x1520 drivers/usb/core/driver.c:396 really_probe+0xe15/0x24d0 drivers/base/dd.c:558 driver_probe_device+0x29d/0x3a0 drivers/base/dd.c:740 __device_attach_driver+0x63f/0x830 drivers/base/dd.c:846 bus_for_each_drv+0x2c8/0x3f0 drivers/base/bus.c:431 __device_attach+0x56a/0x890 drivers/base/dd.c:914 device_initial_probe+0x4a/0x60 drivers/base/dd.c:961 bus_probe_device+0x17e/0x3d0 drivers/base/bus.c:491 device_add+0x2c15/0x31d0 drivers/base/core.c:3109 usb_set_configuration+0x3872/0x3eb0 drivers/usb/core/message.c:2164 usb_generic_driver_probe+0x138/0x300 drivers/usb/core/generic.c:238 usb_probe_device+0x317/0x570 drivers/usb/core/driver.c:293 really_probe+0xe15/0x24d0 drivers/base/dd.c:558 driver_probe_device+0x29d/0x3a0 drivers/base/dd.c:740 __device_attach_driver+0x63f/0x830 drivers/base/dd.c:846 bus_for_each_drv+0x2c8/0x3f0 drivers/base/bus.c:431 __device_attach+0x56a/0x890 drivers/base/dd.c:914 device_initial_probe+0x4a/0x60 drivers/base/dd.c:961 bus_probe_device+0x17e/0x3d0 drivers/base/bus.c:491 device_add+0x2c15/0x31d0 drivers/base/core.c:3109 usb_new_device+0x1bd4/0x2a30 drivers/usb/core/hub.c:2555 hub_port_connect drivers/usb/core/hub.c:5223 [inline] hub_port_connect_change drivers/usb/core/hub.c:5363 [inline] port_event drivers/usb/core/hub.c:5509 [inline] hub_event+0x5b99/0x8870 drivers/usb/core/hub.c:5591 process_one_work+0x1219/0x1fe0 kernel/workqueue.c:2275 process_scheduled_works kernel/workqueue.c:2337 [inline] worker_thread+0x12bc/0x2340 kernel/workqueue.c:2423 kthread+0x521/0x560 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296 Local variable ----act_len@sq905_read_data created at: sq905_read_data+0x87/0x650 drivers/media/usb/gspca/sq905.c:163 sq905_read_data+0x87/0x650 drivers/media/usb/gspca/sq905.c:163 ===================================================== ====================================== Lost 547 message(s)! ===================================================== BUG: KMSAN: uninit-value in number+0x54f/0x2540 lib/vsprintf.c:442 CPU: 0 PID: 1983 Comm: kworker/0:2 Tainted: G B 5.11.0-rc7-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:79 [inline] dump_stack+0x21c/0x280 lib/dump_stack.c:120 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197 number+0x54f/0x2540 lib/vsprintf.c:442 vsnprintf+0x1cd6/0x3600 lib/vsprintf.c:2685 vprintk_store+0x2ab/0x1df0 kernel/printk/printk.c:1984