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=-13.4 required=3.0 tests=DKIMWL_WL_MED,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS,USER_IN_DEF_DKIM_WL 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 546ECC32751 for ; Wed, 7 Aug 2019 14:07:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1E23E21E6C for ; Wed, 7 Aug 2019 14:07:27 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="AfHpXxiE" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388011AbfHGOHZ (ORCPT ); Wed, 7 Aug 2019 10:07:25 -0400 Received: from mail-pl1-f193.google.com ([209.85.214.193]:40803 "EHLO mail-pl1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387936AbfHGOHY (ORCPT ); Wed, 7 Aug 2019 10:07:24 -0400 Received: by mail-pl1-f193.google.com with SMTP id a93so40939339pla.7 for ; Wed, 07 Aug 2019 07:07:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=L/4uctSN16w5FDnlADERKiGVsjicCimkmW4qcNy8xbg=; b=AfHpXxiEPip+Rtb5t/FLGlTsLhvQAqJLJmrat97joDcfH+cATHii2A99mfLWhZWY6S 2LQwLyV+PSua04urGwtjBFK1evfU3Y2FWqdrqXxJzbJNldkB3/Ww+xYGpw+k/XrzN/aE gSVLSu7wXlNkuKTtSUfsVZW7NYdF6U/nQlPmfNLjz98gTRN2YvPKEI7oDNfJDC6Sn7o0 Gm57lNtX498istNd82QWk3L10iSma1P0FJYpGcO15ekJ5uxhIJ8e6OcE/Keudm+67+ym HpAkBi+pxTm4Nsoy9dBlUf1BYcL6cTa6RI+I7C3HM8BaGakCmUP/wEFWNCofBTeB8plV EtMw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=L/4uctSN16w5FDnlADERKiGVsjicCimkmW4qcNy8xbg=; b=RBwzOp6+GY924VVhTvi+OUVzwco99IIvj9jbV1YzUbX7ogUCONbEuUdrsL5BsJpmMn ZnQJKfY1Bl4dCdSJRLpkUR4VLcc10WDo0407+21DRe/9eBiyHoApDdBuFk2EOn890i5O FyIWgo3wSYMgGKGi9JA18omXNO+X03WNgqmPHurp5EQByAluZc1n4sV9XT2RlcSWRW4E 41FZBL1Ap3dEYbUZOLNMYCgse+2tuqZn+sDy1zU7YoO3g4qyEkPt9/or61JfslFhwuOg 5cXpBn9C3DhXL+mZ9DVN0teAsDnQ6WlSuVUROt2440QOf/4XBJ9ke/zX7BAC/TF1Nbvj DbHA== X-Gm-Message-State: APjAAAUlDxgScqYkUndlNqbbXlmziO993sG4Yd67l3OF5NzjUo/Cpge5 5N7HgwKh0wGGT2d3dmlHyK6ooEFsyEBVQknJP47ZTw== X-Google-Smtp-Source: APXvYqy3F+/wIlgU3h+8CDWNKewl1Ci0/BoPT91G/t/z/eG5zxmKdluF99yVq1pwZEMyKpEzO3y5b6OMeUpp2z7iSIA= X-Received: by 2002:a17:902:ab96:: with SMTP id f22mr1612218plr.147.1565186843588; Wed, 07 Aug 2019 07:07:23 -0700 (PDT) MIME-Version: 1.0 References: <00000000000075a7a6058653d977@google.com> In-Reply-To: <00000000000075a7a6058653d977@google.com> From: Andrey Konovalov Date: Wed, 7 Aug 2019 16:07:12 +0200 Message-ID: Subject: Re: WARNING in zd_mac_clear To: syzbot , USB list Cc: "David S. Miller" , Daniel Drake , Ulrich Kunitz , Kalle Valo , LKML , linux-wireless@vger.kernel.org, netdev , syzkaller-bugs , Alan Stern , Oliver Neukum Content-Type: text/plain; charset="UTF-8" Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org On Fri, Apr 12, 2019 at 1:46 PM syzbot wrote: > > Hello, > > syzbot found the following crash on: > > HEAD commit: 9a33b369 usb-fuzzer: main usb gadget fuzzer driver > git tree: https://github.com/google/kasan/tree/usb-fuzzer > console output: https://syzkaller.appspot.com/x/log.txt?x=101a06dd200000 > kernel config: https://syzkaller.appspot.com/x/.config?x=23e37f59d94ddd15 > dashboard link: https://syzkaller.appspot.com/bug?extid=74c65761783d66a9c97c > compiler: gcc (GCC) 9.0.0 20181231 (experimental) > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1170c22d200000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1496adbb200000 > > IMPORTANT: if you fix the bug, please add the following tag to the commit: > Reported-by: syzbot+74c65761783d66a9c97c@syzkaller.appspotmail.com > > usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 > usb 1-1: config 0 descriptor?? > usb 1-1: reset low-speed USB device number 2 using dummy_hcd > usb 1-1: read over firmware interface failed: -71 > usb 1-1: reset low-speed USB device number 2 using dummy_hcd > WARNING: CPU: 1 PID: 21 at drivers/net/wireless/zydas/zd1211rw/zd_mac.c:238 > zd_mac_clear+0xb0/0xe0 drivers/net/wireless/zydas/zd1211rw/zd_mac.c:238 > Kernel panic - not syncing: panic_on_warn set ... > CPU: 1 PID: 21 Comm: kworker/1:1 Not tainted 5.1.0-rc4-319354-g9a33b36 #3 > 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+0xe8/0x16e lib/dump_stack.c:113 > panic+0x29d/0x5f2 kernel/panic.c:214 > __warn.cold+0x20/0x48 kernel/panic.c:571 > report_bug+0x262/0x2a0 lib/bug.c:186 > fixup_bug arch/x86/kernel/traps.c:179 [inline] > fixup_bug arch/x86/kernel/traps.c:174 [inline] > do_error_trap+0x130/0x1f0 arch/x86/kernel/traps.c:272 > do_invalid_op+0x37/0x40 arch/x86/kernel/traps.c:291 > invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:973 > RIP: 0010:zd_mac_clear+0xb0/0xe0 > drivers/net/wireless/zydas/zd1211rw/zd_mac.c:238 > Code: e8 85 d0 60 f8 48 8d bb f8 2b 00 00 be ff ff ff ff e8 54 5a 46 f8 31 > ff 89 c3 89 c6 e8 d9 d1 60 f8 85 db 75 d4 e8 60 d0 60 f8 <0f> 0b 5b 5d e9 > 57 d0 60 f8 48 c7 c7 58 05 cb 93 e8 fb e0 97 f8 eb > RSP: 0018:ffff8880a85c7310 EFLAGS: 00010293 > RAX: ffff8880a84de200 RBX: 0000000000000000 RCX: ffffffff8910f507 > RDX: 0000000000000000 RSI: ffffffff8910f510 RDI: 0000000000000005 > RBP: 0000000000000001 R08: ffff8880a84de200 R09: ffffed1012f83a0b > R10: ffffed1012f83a0a R11: ffff888097c1d057 R12: 00000000ffffffb9 > R13: ffff888097c18b20 R14: ffff888099456630 R15: ffffffff8f979398 > probe+0x259/0x590 drivers/net/wireless/zydas/zd1211rw/zd_usb.c:1421 > usb_probe_interface+0x31d/0x820 drivers/usb/core/driver.c:361 > really_probe+0x2da/0xb10 drivers/base/dd.c:509 > driver_probe_device+0x21d/0x350 drivers/base/dd.c:671 > __device_attach_driver+0x1d8/0x290 drivers/base/dd.c:778 > bus_for_each_drv+0x163/0x1e0 drivers/base/bus.c:454 > __device_attach+0x223/0x3a0 drivers/base/dd.c:844 > bus_probe_device+0x1f1/0x2a0 drivers/base/bus.c:514 > device_add+0xad2/0x16e0 drivers/base/core.c:2106 > usb_set_configuration+0xdf7/0x1740 drivers/usb/core/message.c:2021 > generic_probe+0xa2/0xda drivers/usb/core/generic.c:210 > usb_probe_device+0xc0/0x150 drivers/usb/core/driver.c:266 > really_probe+0x2da/0xb10 drivers/base/dd.c:509 > driver_probe_device+0x21d/0x350 drivers/base/dd.c:671 > __device_attach_driver+0x1d8/0x290 drivers/base/dd.c:778 > bus_for_each_drv+0x163/0x1e0 drivers/base/bus.c:454 > __device_attach+0x223/0x3a0 drivers/base/dd.c:844 > bus_probe_device+0x1f1/0x2a0 drivers/base/bus.c:514 > device_add+0xad2/0x16e0 drivers/base/core.c:2106 > usb_new_device.cold+0x537/0xccf drivers/usb/core/hub.c:2534 > hub_port_connect drivers/usb/core/hub.c:5089 [inline] > hub_port_connect_change drivers/usb/core/hub.c:5204 [inline] > port_event drivers/usb/core/hub.c:5350 [inline] > hub_event+0x138e/0x3b00 drivers/usb/core/hub.c:5432 > process_one_work+0x90f/0x1580 kernel/workqueue.c:2269 > worker_thread+0x9b/0xe20 kernel/workqueue.c:2415 > kthread+0x313/0x420 kernel/kthread.c:253 > ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 > Kernel Offset: disabled > Rebooting in 86400 seconds.. This USB bug is the second most frequently triggered one with over 10k kernel crashes. > > > --- > 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