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[209.132.180.67]) by mx.google.com with ESMTP id v9si4706577otb.134.2019.12.05.05.38.42; Thu, 05 Dec 2019 05:38:56 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=appspotmail.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729426AbfLENiC (ORCPT + 99 others); Thu, 5 Dec 2019 08:38:02 -0500 Received: from mail-io1-f71.google.com ([209.85.166.71]:46369 "EHLO mail-io1-f71.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729290AbfLENiC (ORCPT ); Thu, 5 Dec 2019 08:38:02 -0500 Received: by mail-io1-f71.google.com with SMTP id b186so2371870iof.13 for ; Thu, 05 Dec 2019 05:38:01 -0800 (PST) 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=BPtd1lCkh28DO7EwzqWFu86aIj+E+y3RBRqfbiycXgU=; b=n4DzrEdLZmF5IXIy7ltt3HtMghmERg6RU8leVVRaAUqr00hFPyC/f3egFryJgKmnYC myDkJ9YbeYg49j2QUN83iPbr6hj2BhgfXM8CdXqGvVvQv9XQjvobOF3at81aVBKIAfJj 9oVHYREZovqhC0pHzuIAOpKaqW3LbcD0Gxc9W+QTwNN9ADBQRLiMDLZezBzPhKPBeuic RByGWRizwSieTVrVpPvccJIR0ihP3J0F5IjkxP98dOIKwnF2RqdUunM4IdfjsDnANl81 euTKXy7zxc/G6LwUtL0xHwLa7yxwKMcBWfobGSzzjEhYymLe0PoPm4xVOFGd0+WrGo5Y Zoog== X-Gm-Message-State: APjAAAXBufpNolFAbWD/TIzsWPSyqV9/Z8ftS8uPhoKmUSADUVv0CNk2 9VzT8st2ssjY5MLi+uCZJypFUd8TFZDZ1eEGHi34hd02/y4t MIME-Version: 1.0 X-Received: by 2002:a92:3984:: with SMTP id h4mr8301330ilf.36.1575553081339; Thu, 05 Dec 2019 05:38:01 -0800 (PST) Date: Thu, 05 Dec 2019 05:38:01 -0800 In-Reply-To: <0000000000006dff110598d25a9b@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000bcf3bc0598f5090d@google.com> Subject: Re: INFO: task hung in fb_open From: syzbot To: airlied@linux.ie, ayan.halder@arm.com, b.zolnierkie@samsung.com, daniel.vetter@ffwll.ch, dri-devel@lists.freedesktop.org, kraxel@redhat.com, linux-arm-kernel@lists.infradead.org, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, maarten.lankhorst@linux.intel.com, maxime.ripard@bootlin.com, peda@axentia.se, sam@ravnborg.org, syzkaller-bugs@googlegroups.com, ville.syrjala@linux.intel.com, wens@csie.org 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 syzbot has bisected this bug to: commit 979c11ef39cee79d6f556091a357890962be2580 Author: Ayan Kumar Halder Date: Tue Jul 17 17:13:46 2018 +0000 drm/sun4i: Substitute sun4i_backend_format_is_yuv() with format->is_yuv bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=15d2f97ee00000 start commit: 596cf45c Merge branch 'akpm' (patches from Andrew) git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=13d2f97ee00000 kernel config: https://syzkaller.appspot.com/x/.config?x=7d8ab2e0e09c2a82 dashboard link: https://syzkaller.appspot.com/bug?extid=a4ae1442ccc637162dc1 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14273edae00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15e7677ae00000 Reported-by: syzbot+a4ae1442ccc637162dc1@syzkaller.appspotmail.com Fixes: 979c11ef39ce ("drm/sun4i: Substitute sun4i_backend_format_is_yuv() with format->is_yuv") For information about bisection process see: https://goo.gl/tpsmEJ#bisection