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 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 86C90CDB474 for ; Sun, 15 Oct 2023 03:37:50 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 9B6C910E07B; Sun, 15 Oct 2023 03:37:49 +0000 (UTC) Received: from mail-oi1-f208.google.com (mail-oi1-f208.google.com [209.85.167.208]) by gabe.freedesktop.org (Postfix) with ESMTPS id C952010E07B for ; Sun, 15 Oct 2023 03:37:48 +0000 (UTC) Received: by mail-oi1-f208.google.com with SMTP id 5614622812f47-3ae12e140f7so5446929b6e.0 for ; Sat, 14 Oct 2023 20:37:48 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1697341067; x=1697945867; h=content-transfer-encoding:to:from:subject:message-id:date :mime-version:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=foF8w8a+Sc3aMYEjJANWw1plNPjcJQbPnL865dnxUWo=; b=RIyDwPGHHNwhPqdlwoWxCslIFcjK4XbWXgVtNkSIRCE92n9BfZDqFAkpF8CopAIL2g +4kYsuq9yIVKjfKiypPsWW8X36ZRsSlerx6n+oguSYw6bOlBypxWQdkjv1Pj6LT7lw3z PXKDnzeLRMpjZTuDF7WOpDzCOwQrxoW+zP0RbTfwHnKhV/Fwm50oiMiaU2xACQCbUFf7 L69uchMV1URBoOBLdAl2WJM/DMaoa6tMZs+f3sD/MYgcz6gZojMerrZu/gn/Wq71h4Zm j18sybhWdi6ROVT+nWKsiNSNnDFNqm7sob1ehxFBME2ySMkteQeN3ujZFKdigwRH6I1N yZGQ== X-Gm-Message-State: AOJu0YzbSNLtLGL/j/z+Uv3Og76rQPDW63udWjAf1NbooTErdwj4oaTW VtBTayZPEa9vytERGfrBksZhe3DsycDB/NjPnExgQttiZflz X-Google-Smtp-Source: AGHT+IGsyZ0CVZPQIKSBXE2Ngyt2bDz2pyzbCDr2Xsmei5tIBjt7D/9dE16CAQNT9YtnIs7GTSb7j6pgJXBjgsVW/asO6sA1JIcf MIME-Version: 1.0 X-Received: by 2002:a05:6808:2091:b0:3a1:c163:6022 with SMTP id s17-20020a056808209100b003a1c1636022mr1741075oiw.4.1697341067805; Sat, 14 Oct 2023 20:37:47 -0700 (PDT) Date: Sat, 14 Oct 2023 20:37:47 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000068c7730607b903b7@google.com> Subject: [syzbot] [dri?] WARNING in drm_prime_fd_to_handle_ioctl From: syzbot To: airlied@gmail.com, christian.koenig@amd.com, daniel@ffwll.ch, dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, maarten.lankhorst@linux.intel.com, mripard@kernel.org, sumit.semwal@linaro.org, syzkaller-bugs@googlegroups.com, tzimmermann@suse.de Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Hello, syzbot found the following issue on: HEAD commit: 1c8b86a3799f Merge tag 'xsa441-6.6-tag' of git://git.kerne.= . git tree: upstream console+strace: https://syzkaller.appspot.com/x/log.txt?x=3D13005e31680000 kernel config: https://syzkaller.appspot.com/x/.config?x=3D32d0b9b42ceb8b1= 0 dashboard link: https://syzkaller.appspot.com/bug?extid=3D0da81ccba2345eeb7= f48 compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Deb= ian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=3D13c4834568000= 0 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=3D101b3679680000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/45e9377886e9/disk-= 1c8b86a3.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/9511a41a6d1e/vmlinux-= 1c8b86a3.xz kernel image: https://storage.googleapis.com/syzbot-assets/fac07e1c3c1a/bzI= mage-1c8b86a3.xz The issue was bisected to: commit 85e26dd5100a182bf8448050427539c0a66ab793 Author: Christian K=C3=B6nig Date: Thu Jan 26 09:24:26 2023 +0000 drm/client: fix circular reference counting issue bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=3D14cf17f16800= 00 final oops: https://syzkaller.appspot.com/x/report.txt?x=3D16cf17f16800= 00 console output: https://syzkaller.appspot.com/x/log.txt?x=3D12cf17f1680000 IMPORTANT: if you fix the issue, please add the following tag to the commit= : Reported-by: syzbot+0da81ccba2345eeb7f48@syzkaller.appspotmail.com Fixes: 85e26dd5100a ("drm/client: fix circular reference counting issue") ------------[ cut here ]------------ WARNING: CPU: 0 PID: 5040 at drivers/gpu/drm/drm_prime.c:326 drm_gem_prime_= fd_to_handle drivers/gpu/drm/drm_prime.c:326 [inline] WARNING: CPU: 0 PID: 5040 at drivers/gpu/drm/drm_prime.c:326 drm_prime_fd_t= o_handle_ioctl+0x555/0x600 drivers/gpu/drm/drm_prime.c:374 Modules linked in: CPU: 0 PID: 5040 Comm: syz-executor405 Not tainted 6.6.0-rc5-syzkaller-0005= 5-g1c8b86a3799f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Goo= gle 09/06/2023 RIP: 0010:drm_gem_prime_fd_to_handle drivers/gpu/drm/drm_prime.c:326 [inlin= e] RIP: 0010:drm_prime_fd_to_handle_ioctl+0x555/0x600 drivers/gpu/drm/drm_prim= e.c:374 Code: 89 df e8 0e 9b 26 fd f0 48 ff 03 e9 7e fd ff ff e8 b0 dc d0 fc 4c 89 = f7 44 89 eb e8 75 73 8b 05 e9 da fe ff ff e8 9b dc d0 fc <0f> 0b e9 5d fd f= f ff e8 3f 94 26 fd e9 3a fc ff ff 48 8b 7c 24 08 RSP: 0018:ffffc90003a5fc70 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff888018f14c00 RCX: 0000000000000000 RDX: ffff88801d691dc0 RSI: ffffffff84b6ea15 RDI: ffff8881476f3928 RBP: ffff88801fac5400 R08: 0000000000000007 R09: fffffffffffff000 R10: ffff8881476f3800 R11: 0000000000000000 R12: ffffc90003a5fe10 R13: ffff8881476f3800 R14: ffff88801c590c10 R15: 0000000000000000 FS: 00005555555d6380(0000) GS:ffff8880b9800000(0000) knlGS:000000000000000= 0 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555db75f4058 CR3: 0000000072209000 CR4: 0000000000350ef0 Call Trace: drm_ioctl_kernel+0x280/0x4c0 drivers/gpu/drm/drm_ioctl.c:789 drm_ioctl+0x5cb/0xbf0 drivers/gpu/drm/drm_ioctl.c:892 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:871 [inline] __se_sys_ioctl fs/ioctl.c:857 [inline] __x64_sys_ioctl+0x18f/0x210 fs/ioctl.c:857 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f0c8214be69 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 17 00 00 90 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 f= f 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fff6f4156f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0c8214be69 RDX: 0000000020000000 RSI: 00000000c00c642e RDI: 0000000000000003 RBP: 0000000000000000 R08: 00000000000000a0 R09: 00000000000000a0 R10: 00000000000000a0 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f0c821c3820 R14: 00007fff6f415720 R15: 00007fff6f415710 --- 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. For information about bisection process see: https://goo.gl/tpsmEJ#bisectio= n If the bug is already fixed, let syzbot know by replying with: #syz fix: exact-commit-title If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. If you want to overwrite bug's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the bug is a duplicate of another bug, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup