From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f70.google.com (mail-io1-f70.google.com [209.85.166.70]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5EE65156F2A for ; Thu, 16 May 2024 22:01:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.70 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715896864; cv=none; b=jH5dZ7MkSi9FIYnC6o1LqFEgpITu+l7kdW5FqaYAMweTer4Tv45ePmVjFjXtFa3m31FONNcbdHA7l3dRJ/+ySc3cqzoiR8f1BshXvsWEehQbwyAAfx/FkcmEdACvbTiViAmGzozMVtmcrL/7DGNrXCJvTIfvUqbkeNJ8b8EhAvs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715896864; c=relaxed/simple; bh=5ApjjVyG5kOb2GvSyJn4jbkb/QGye5113VwQa+dzRSA=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=MJ1XV7XKRymsTwzbwroHjE7l4VuIxSp9PcSbSebVKnOSPWcQn8ij/ztBgoWMZ4+DzIe1Yizt4uoGVYZdIOxBDC68P8kWZzrEwXc4wOqCwLrrZxRqYF9H4Az6QRF2VoirsVyLCVYvz4M8u79OPZk3c05to2tmKQnKQkcSYjTAJ/o= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.166.70 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-io1-f70.google.com with SMTP id ca18e2360f4ac-7e1b65780b7so907739939f.2 for ; Thu, 16 May 2024 15:01:03 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1715896862; x=1716501662; 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=ij9UOEi/rvEspETVKvgQxDYWhFL0r2IXg+Lgbvqktpc=; b=MSN7oOsur8X93u/uQ3raNZ3esgzpAS8vnxj3PrTsf6yfyN/B3aW+WXFNzYEUK5WHPG QW3VOFHiJaKj2wdaqKbyeBZPiS7TxIYkN4Ygjk/8wZNnIPBh0lPMW0NcoHPQ25QUbIUw DAccTVXy+96BkXrLzQF/OGAw2GzgelBheRjiGIKfpWHkF9hvOsQY888aye9HPmNbO15b T2+5miY1WWEKseL4+nU5VjtclsJDLpJTrDy4GNknE7rhbGSG+w0+OWrtWmqaRmHgxiBL UH4swRGg8LXm90726BOIsWuwg0F1/ta7RWhUoisgxlY4Wj4qU6IwqE4FPcoG3lOv1YyQ bUYQ== X-Forwarded-Encrypted: i=1; AJvYcCURWkHOK6YhUHRPKrtqFIc+Y6wM8DjTNCAjnBNE+jCqWl3ixjWE17bAgGQRN8mqDNWx1tUhtN9496FSkJDW9voDNmlnD7/qK3+y X-Gm-Message-State: AOJu0Ywhpf6Jhmb1X+jzspVMPc2Cd0zn+QiPseWUpi4yydriQGFc/O/P 8uiQFyIUgQ7abc2d4jCfL5ypsVhTKggc8V9tXS+7Kz0gZnZsjH4q72omip/rdeha7K02PUfeX84 AokiZMrcjAoCkY+TS8cCzIPGHZb6ClejeCiteEQi/Tj0cPovfhj1fSUM= X-Google-Smtp-Source: AGHT+IF4FYXyVi+PNgCKKVgxVWjwAbrtBw5UnExXmcnE5b/QOXgG13UczkaJ42LJBz1xoWmDg6pwDEsXRfDUDYXY3d/3NYS8VAyl Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6602:3ca:b0:7de:e175:fd2d with SMTP id ca18e2360f4ac-7e1b521f29dmr162925539f.3.1715896862636; Thu, 16 May 2024 15:01:02 -0700 (PDT) Date: Thu, 16 May 2024 15:01:02 -0700 In-Reply-To: <000000000000051b2d06189716c3@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000f8112e0618995e6e@google.com> Subject: Re: [syzbot] [usb?] INFO: rcu detected stall in schedule_timeout (6) From: syzbot To: bp@alien8.de, dave.hansen@linux.intel.com, gregkh@linuxfoundation.org, hpa@zytor.com, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, marcello.bauer@9elements.com, mingo@redhat.com, stern@rowland.harvard.edu, sylv@sylv.io, syzkaller-bugs@googlegroups.com, tglx@linutronix.de, x86@kernel.org Content-Type: text/plain; charset="UTF-8" syzbot has bisected this issue to: commit a7f3813e589fd8e2834720829a47b5eb914a9afe Author: Marcello Sylvester Bauer Date: Thu Apr 11 14:51:28 2024 +0000 usb: gadget: dummy_hcd: Switch to hrtimer transfer scheduler bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=119318d0980000 start commit: 75fa778d74b7 Add linux-next specific files for 20240510 git tree: linux-next final oops: https://syzkaller.appspot.com/x/report.txt?x=139318d0980000 console output: https://syzkaller.appspot.com/x/log.txt?x=159318d0980000 kernel config: https://syzkaller.appspot.com/x/.config?x=ccdd3ebd6715749a dashboard link: https://syzkaller.appspot.com/bug?extid=c793a7eca38803212c61 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16dcd598980000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=151d9c78980000 Reported-by: syzbot+c793a7eca38803212c61@syzkaller.appspotmail.com Fixes: a7f3813e589f ("usb: gadget: dummy_hcd: Switch to hrtimer transfer scheduler") For information about bisection process see: https://goo.gl/tpsmEJ#bisection