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=-8.7 required=3.0 tests=BAYES_00,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 C3CEDC43461 for ; Wed, 5 May 2021 14:02:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A0004610A1 for ; Wed, 5 May 2021 14:02:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233721AbhEEODW (ORCPT ); Wed, 5 May 2021 10:03:22 -0400 Received: from mail-il1-f197.google.com ([209.85.166.197]:55986 "EHLO mail-il1-f197.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233709AbhEEODN (ORCPT ); Wed, 5 May 2021 10:03:13 -0400 Received: by mail-il1-f197.google.com with SMTP id a15-20020a927f0f0000b02901ac2bdd733dso1606988ild.22 for ; Wed, 05 May 2021 07:02:16 -0700 (PDT) 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:message-id:subject:from:to; bh=nzZoGSaNk15eVdCdhLg/lhOvD5F94kAlun8vvUPZwmQ=; b=HURbBW9Z/jShopXT0w3Zp1q8tq/BXFWDVbaa6IFT8Tqjgx0qedteDuo9Sc0w8i6l93 C9qjxs993TDmUKty+yfu7MrYhOmmjxnVgEo3v9TkPc2p666a+qHfTQkRafYx76mAwAUw 539eM0B5Ea3OPUlXPx5H0JhIjhZ/9MJpJacJS3p/tJn8bTSM6UfYAD69xJPTvfvlBAoI 69qrjAkThOZX+9PTjYu/7A5y1QpMHDPNQKY+tbV4M9T3cAhPC8n8gjone3FkY0aQkocf rrByPgKwf72rn9tuZ80rPZ66TXVeI2d4dj9WTJqoM2XJUHT97z1GrqKOjZWe9llVPnrT y3NA== X-Gm-Message-State: AOAM531Qsbr8DKDth+p3UifLuUb4B8e2F3QXWD++8bhkmjY/cc1O5kcH qTINFO0iAQG0vZZ7rujpy6uE3z3JsS2tUzw16md/I5IKl+zz X-Google-Smtp-Source: ABdhPJyzXTlJHMJewy9XPDfpGTO6uV+D2lMNp4D6HM6CPyTnpKZnxTn33UszVOcVPYTRNmf41wg5cAcE/fYy+ivpY2DfwadJnrsy MIME-Version: 1.0 X-Received: by 2002:a92:b74a:: with SMTP id c10mr24963547ilm.72.1620223335870; Wed, 05 May 2021 07:02:15 -0700 (PDT) Date: Wed, 05 May 2021 07:02:15 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000006438bb05c195a467@google.com> Subject: [syzbot] WARNING in drm_wait_one_vblank From: syzbot To: airlied@linux.ie, daniel@ffwll.ch, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, maarten.lankhorst@linux.intel.com, mripard@kernel.org, syzkaller-bugs@googlegroups.com, tzimmermann@suse.de Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: d2b6f8a1 Merge tag 'xfs-5.13-merge-3' of git://git.kernel... git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=12c5b2c3d00000 kernel config: https://syzkaller.appspot.com/x/.config?x=65c207250bba4efe dashboard link: https://syzkaller.appspot.com/bug?extid=6f7fe2dbc479dca0ed17 Unfortunately, I don't have any reproducer for this issue yet. IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+6f7fe2dbc479dca0ed17@syzkaller.appspotmail.com ------------[ cut here ]------------ platform vkms: vblank wait timed out on crtc 0 WARNING: CPU: 0 PID: 11785 at drivers/gpu/drm/drm_vblank.c:1269 drm_wait_one_vblank+0x2be/0x500 drivers/gpu/drm/drm_vblank.c:1269 Modules linked in: CPU: 0 PID: 11785 Comm: syz-executor.0 Not tainted 5.12.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:drm_wait_one_vblank+0x2be/0x500 drivers/gpu/drm/drm_vblank.c:1269 Code: 85 f6 0f 84 a3 01 00 00 e8 6f f0 32 fd 4c 89 ef e8 97 68 13 00 44 89 e1 4c 89 f2 48 c7 c7 e0 eb d6 89 48 89 c6 e8 57 35 86 04 <0f> 0b e9 87 fe ff ff e8 46 f0 32 fd 31 ff 4c 89 ee e8 5c f8 32 fd RSP: 0018:ffffc90008f7fb40 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 00000000000038f8 RCX: 0000000000000000 RDX: 0000000000040000 RSI: ffffffff815c7bd5 RDI: fffff520011eff5a RBP: ffff8881437b0000 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff815c1a3e R11: 0000000000000000 R12: 0000000000000000 R13: ffff88801a1c4010 R14: ffff8880161746b8 R15: ffff888142ddc830 FS: 00007f8eba6e2700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000014a53ad CR3: 0000000021583000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: drm_fb_helper_ioctl+0x159/0x1a0 drivers/gpu/drm/drm_fb_helper.c:1197 do_fb_ioctl+0x1d5/0x690 drivers/video/fbdev/core/fbmem.c:1171 fb_ioctl+0xe7/0x150 drivers/video/fbdev/core/fbmem.c:1185 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:1069 [inline] __se_sys_ioctl fs/ioctl.c:1055 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:1055 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665f9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f8eba6e2188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 00000000004665f9 RDX: 0000000000000000 RSI: 0000000040044620 RDI: 0000000000000006 RBP: 00000000004bfce1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60 R13: 0000000000a9fb1f R14: 00007f8eba6e2300 R15: 0000000000022000 --- This report 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 issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot.