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=-5.4 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham 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 71C6FC49ED7 for ; Mon, 16 Sep 2019 13:29:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 45D94214DE for ; Mon, 16 Sep 2019 13:29:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387404AbfIPN3g (ORCPT ); Mon, 16 Sep 2019 09:29:36 -0400 Received: from mail-io1-f69.google.com ([209.85.166.69]:51030 "EHLO mail-io1-f69.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with 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1.0 X-Received: by 2002:a5d:9859:: with SMTP id p25mr15815937ios.142.1568640549930; Mon, 16 Sep 2019 06:29:09 -0700 (PDT) Date: Mon, 16 Sep 2019 06:29:09 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000c2531f0592ab96fb@google.com> Subject: general protection fault in usb_set_interface From: syzbot To: andreyknvl@google.com, gregkh@linuxfoundation.org, kai.heng.feng@canonical.com, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, mans@mansr.com, oneukum@suse.com, stern@rowland.harvard.edu, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot found the following crash on: HEAD commit: f0df5c1b usb-fuzzer: main usb gadget fuzzer driver git tree: https://github.com/google/kasan.git usb-fuzzer console output: https://syzkaller.appspot.com/x/log.txt?x=158b66f1600000 kernel config: https://syzkaller.appspot.com/x/.config?x=5c6633fa4ed00be5 dashboard link: https://syzkaller.appspot.com/bug?extid=7fa38a608b1075dfd634 compiler: gcc (GCC) 9.0.0 20181231 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14f57db9600000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=127b61a5600000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+7fa38a608b1075dfd634@syzkaller.appspotmail.com usb 3-1: usbvision_write_reg: failed: error -2 usbvision_set_audio: can't write iopin register for audio switching kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] SMP KASAN CPU: 1 PID: 1955 Comm: v4l_id Not tainted 5.3.0-rc7+ #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:usb_set_interface+0x34/0xa50 drivers/usb/core/message.c:1362 Code: fc 55 53 48 83 ec 40 89 54 24 18 89 74 24 10 e8 22 1c ef fd 49 8d 7c 24 48 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 fb 08 00 00 49 8b 44 24 48 49 8d 7c 24 18 48 89 RSP: 0018:ffff8881cb19fd50 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000009 RSI: ffffffff834ebe7e RDI: 0000000000000048 RBP: ffff8881cb8e4200 R08: ffffffff88d21878 R09: ffffed103971cb43 R10: ffff8881cb19fdc8 R11: ffff8881cb8e5a17 R12: 0000000000000000 R13: ffff8881cb8e5a10 R14: ffff8881cb8e4cc8 R15: ffff8881cb8e5178 FS: 00007f4f60b6d700(0000) GS:ffff8881db300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4f6060c330 CR3: 00000001cc3a8000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: usbvision_radio_close+0x105/0x250 drivers/media/usb/usbvision/usbvision-video.c:1114 v4l2_release+0x2e7/0x390 drivers/media/v4l2-core/v4l2-dev.c:455 __fput+0x2d7/0x840 fs/file_table.c:280 task_work_run+0x13f/0x1c0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop+0x1d2/0x200 arch/x86/entry/common.c:163 prepare_exit_to_usermode arch/x86/entry/common.c:194 [inline] syscall_return_slowpath arch/x86/entry/common.c:274 [inline] do_syscall_64+0x45f/0x580 arch/x86/entry/common.c:299 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f4f6069b2b0 Code: 40 75 0b 31 c0 48 83 c4 08 e9 0c ff ff ff 48 8d 3d c5 32 08 00 e8 c0 07 02 00 83 3d 45 a3 2b 00 00 75 10 b8 03 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 ce 8a 01 00 48 89 04 24 RSP: 002b:00007ffde2d50ee8 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000003 RCX: 00007f4f6069b2b0 RDX: 00007f4f60951df0 RSI: 0000000000000001 RDI: 0000000000000003 RBP: 0000000000000000 R08: 00007f4f60951df0 R09: 000000000000000a R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000400884 R13: 00007ffde2d51040 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 62bd2b7512ab49ee ]--- RIP: 0010:usb_set_interface+0x34/0xa50 drivers/usb/core/message.c:1362 Code: fc 55 53 48 83 ec 40 89 54 24 18 89 74 24 10 e8 22 1c ef fd 49 8d 7c 24 48 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 fb 08 00 00 49 8b 44 24 48 49 8d 7c 24 18 48 89 RSP: 0018:ffff8881cb19fd50 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000009 RSI: ffffffff834ebe7e RDI: 0000000000000048 RBP: ffff8881cb8e4200 R08: ffffffff88d21878 R09: ffffed103971cb43 R10: ffff8881cb19fdc8 R11: ffff8881cb8e5a17 R12: 0000000000000000 R13: ffff8881cb8e5a10 R14: ffff8881cb8e4cc8 R15: ffff8881cb8e5178 FS: 00007f4f60b6d700(0000) GS:ffff8881db300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4f6060c330 CR3: 00000001cc3a8000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 --- This bug 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 bug report. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. syzbot can test patches for this bug, for details see: https://goo.gl/tpsmEJ#testing-patches