From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2C7AE8BE0 for ; Fri, 23 Jun 2023 13:32:25 +0000 (UTC) Received: from mail-io1-f71.google.com (mail-io1-f71.google.com [209.85.166.71]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4FA602683 for ; Fri, 23 Jun 2023 06:32:23 -0700 (PDT) Received: by mail-io1-f71.google.com with SMTP id ca18e2360f4ac-76998d984b0so40935039f.2 for ; Fri, 23 Jun 2023 06:32:23 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1687527142; x=1690119142; h=to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=mPlj0ePe9xQ/WGGxyQBMmpisE5qo9ZSTCQrilqsvigQ=; b=Ld/4BYwl/m/MvE9z1KjX6A8FlNZM7tcYphNKzUermuZV0YqbVbGGElSH+P621YYaYE ozziQ2ErLUZBX3tqu63vpuOBj7XJKGAjF1vkpJwdOSFKJ8+Nuv/X27l0PS7UtaoSZ6o+ 6HfLkdvrMjoK6ZHoEYsSuDhXLGBLSmFZHcRsG7u8FDeYnO1nw73B0AA7fW/nYBGH1qEH aKkQIe6foytUNxuDWdGSZU5W6bJbBue5izuP+re3qs+7D6wn7hnLoeT4f19+RiUJkClT xY2BDBM71fLTkpn/D9/mSZVaWhBy6g7Z1ifNuAP5xtsD/4XldkrKs4SHt7402BFpFft5 N17A== X-Gm-Message-State: AC+VfDy9S+e8Ob4NrH/0RyD694nvZxd4LAHryq3evNXIoM6BYh6erynK rMgYiqUI+cwAS39y2eh8jv+MLKiVWPStCcku0nt3g0MXvPIJ X-Google-Smtp-Source: ACHHUZ7es2/0OYCgP9Xe9+U9nOMkBNUXSJs2+g2Sx3i1cyfAId1btZVYLtMzAKFe6WLIK1k38RkxmhHr4PLlb5Wssps8Nws/9xja Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a02:848f:0:b0:423:219d:81ce with SMTP id f15-20020a02848f000000b00423219d81cemr7555030jai.2.1687527142625; Fri, 23 Jun 2023 06:32:22 -0700 (PDT) Date: Fri, 23 Jun 2023 06:32:22 -0700 In-Reply-To: <000000000000a56e9105d0cec021@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000e298cd05fecc07d4@google.com> Subject: Re: [syzbot] [usb?] WARNING in usbnet_start_xmit/usb_submit_urb From: syzbot To: andreyknvl@google.com, davem@davemloft.net, dvyukov@google.com, edumazet@google.com, gregkh@linuxfoundation.org, kbuild-all@lists.01.org, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, lkp@intel.com, netdev@vger.kernel.org, nogikh@google.com, oneukum@suse.com, pabeni@redhat.com, stern@rowland.harvard.edu, syzkaller-bugs@googlegroups.com, troels@connectedcars.dk Content-Type: text/plain; charset="UTF-8" X-Spam-Status: No, score=0.8 required=5.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H2, SORTED_RECIPS,SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE, URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net syzbot has bisected this issue to: commit 45bf39f8df7f05efb83b302c65ae3b9bc92b7065 Author: Alan Stern Date: Tue Jan 31 20:49:04 2023 +0000 USB: core: Don't hold device lock while reading the "descriptors" sysfs file bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=124b5877280000 start commit: 692b7dc87ca6 Merge tag 'hyperv-fixes-signed-20230619' of g.. git tree: upstream final oops: https://syzkaller.appspot.com/x/report.txt?x=114b5877280000 console output: https://syzkaller.appspot.com/x/log.txt?x=164b5877280000 kernel config: https://syzkaller.appspot.com/x/.config?x=2cbd298d0aff1140 dashboard link: https://syzkaller.appspot.com/bug?extid=63ee658b9a100ffadbe2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1760094b280000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1359cdf3280000 Reported-by: syzbot+63ee658b9a100ffadbe2@syzkaller.appspotmail.com Fixes: 45bf39f8df7f ("USB: core: Don't hold device lock while reading the "descriptors" sysfs file") For information about bisection process see: https://goo.gl/tpsmEJ#bisection