From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oo1-f80.google.com (mail-oo1-f80.google.com [209.85.161.80]) (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 103A719E99F for ; Sat, 6 Dec 2025 01:19:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.161.80 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764983969; cv=none; b=e9alGWdRjjZ4qeh+enA49adO8XXeirRA+BEagB8mn73NQYWDCmd6C6BgbImzTvJpptKpPsdLP0l9FPOxKiuNy+KPd6yM2WOsZVzZXRs1LMbGKOD/FfRVVEvxP5dPqkX0M56tqvDyHITmAI92Qw4axdnN4t6KijaA9uRoLOcT3tI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764983969; c=relaxed/simple; bh=DxTa8UKIVjRkjmLDcd3huCRnhUNnF9PY7u//r3LuyjM=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=O5kii88Dbo1EIeZ9enUNcaD9rp0KowAtHMDtlwWse6umeavXhKcsj8syh3tp+HFIsGvlAEFbZc1YwGp+dzXgAlvvnO6RQMqvPv7x8BvU+vWeOgI5yJHtccNSW0TppG85GMc1zcCMFoZ1yvueU6k3FezDTY87NWFRJb5s/JDWzdY= 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=209.85.161.80 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-oo1-f80.google.com with SMTP id 006d021491bc7-65742f8c565so3595461eaf.1 for ; Fri, 05 Dec 2025 17:19:27 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1764983967; x=1765588767; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=iamnrkElp7j3TjhockSVR4ojhUOK2ChBJfnCvlBuTjI=; b=m45w2as4JoDfYFx89XxFKQOQW7PcJG2HTa6u98DG/IXc6NFAOfGs/c+CcnzNTrSDs6 fUyRbCVmlUtSilTxXRXB/IQAsZlQW599oahi0/YLqt6aAjX9uJc1KOzDcaLIuJCzAYSF weNt03VRTe/+dHDbA11Sqd3kgIx0U/yLApn8NcumjAoxtSjcMV2+WK6QLCTrrHslMn+N DvKQA0/w23h3paITjNk0sb36IwgnUPhzDqpbu8TvDSBcICsWxNlhBOT/EzcWY5wsjrQa c2OectaevJgLhEamQCeZTyed4xVaC02URa+GKdNnuiHsTOSjp0ROF+c9p1NK3A1CvEcR OGjw== X-Forwarded-Encrypted: i=1; AJvYcCU/ydraHtksEjv3/pn2xoxLfFQlyWCVoGVnRR+zdp2lrXI+JshZmSIRqpZ95lseB8nZJrSt31jd/6CA55M=@vger.kernel.org X-Gm-Message-State: AOJu0YzrEZc6CRPM9GfAJ9vW6AD/LwGQ9uOxuB5kGy/mm7OYwW4h98Ml x/nxVBZFmKaCc8azN4ohu5ZO60oG0xuQ126qyvUyEb7747TBCe906nKhKjBTuqF03iU/SEA6l9o kFtL350t8GjjARnZ/PuPIkWlBpcVCRNYN09DTGhJwqWoj6/qMANAZScXBeBs= X-Google-Smtp-Source: AGHT+IFTXBAiajNCFxz6p22lgnqCsewrHy8l5CrMbwVzmSF0kEp1CYnit5k/Ep3FZ7GrUryFn1zjUnrbHOfW4JgI/VmPkCkDcaZq Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:f03:b0:659:9a49:8fcd with SMTP id 006d021491bc7-6599a9774f2mr508232eaf.70.1764983967246; Fri, 05 Dec 2025 17:19:27 -0800 (PST) Date: Fri, 05 Dec 2025 17:19:27 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6933849f.a70a0220.243dc6.0026.GAE@google.com> Subject: [syzbot] [media?] [dri?] WARNING in dma_buf_vmap From: syzbot To: christian.koenig@amd.com, dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, sumit.semwal@linaro.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 1d18101a644e Merge tag 'kernel-6.19-rc1.cred' of git://git.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=13fba192580000 kernel config: https://syzkaller.appspot.com/x/.config?x=a1db0fea040c2a9f dashboard link: https://syzkaller.appspot.com/bug?extid=4317d7108e14e5d56308 compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1055e2b4580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16ddf484580000 Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/d900f083ada3/non_bootable_disk-1d18101a.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/98f78b52cccd/vmlinux-1d18101a.xz kernel image: https://storage.googleapis.com/syzbot-assets/7a8898061bfb/bzImage-1d18101a.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+4317d7108e14e5d56308@syzkaller.appspotmail.com Total swap = 124996kB 393083 pages RAM 0 pages HighMem/MovableOnly 184478 pages reserved 0 pages cma reserved ------------[ cut here ]------------ WARNING: CPU: 0 PID: 5488 at drivers/dma-buf/dma-buf.c:1536 dma_buf_vmap+0x306/0x3b0 drivers/dma-buf/dma-buf.c:1536 Modules linked in: CPU: 0 UID: 0 PID: 5488 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:dma_buf_vmap+0x306/0x3b0 drivers/dma-buf/dma-buf.c:1536 Code: 64 05 cc e8 0c 99 d7 fb 90 0f 0b 90 b8 ea ff ff ff eb bc e8 fc 98 d7 fb 90 0f 0b 90 e9 0d fe ff ff e8 ee 98 d7 fb 44 89 f0 90 <0f> 0b 90 49 bd 00 00 00 00 00 fc ff df eb 91 e8 c6 9c 61 05 48 c7 RSP: 0018:ffffc90002bbf3a0 EFLAGS: 00010293 RAX: 00000000fffffff4 RBX: ffff888000e02428 RCX: ffff888000eb4900 RDX: 0000000000000000 RSI: 00000000fffffff4 RDI: 0000000000000000 RBP: ffffc90002bbf450 R08: ffffc90002bbf227 R09: 1ffff92000577e44 R10: dffffc0000000000 R11: fffff52000577e45 R12: ffffffff85ea4500 R13: ffff888000e02430 R14: 00000000fffffff4 R15: 1ffff110001c0485 FS: 0000555591ecc500(0000) GS:ffff88808d722000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055859af10a08 CR3: 00000000589bb000 CR4: 0000000000352ef0 Call Trace: drm_gem_shmem_vmap_locked+0x14c/0x790 drivers/gpu/drm/drm_gem_shmem_helper.c:354 drm_gem_vmap_locked drivers/gpu/drm/drm_gem.c:1279 [inline] drm_gem_vmap+0x10a/0x1d0 drivers/gpu/drm/drm_gem.c:1321 drm_gem_fb_vmap+0xaa/0x8d0 drivers/gpu/drm/drm_gem_framebuffer_helper.c:368 drm_atomic_helper_prepare_planes+0x2d6/0xb60 drivers/gpu/drm/drm_atomic_helper.c:2760 drm_atomic_helper_commit+0x19a/0xb10 drivers/gpu/drm/drm_atomic_helper.c:2189 drm_atomic_commit+0x262/0x2c0 drivers/gpu/drm/drm_atomic.c:1577 drm_atomic_helper_update_plane+0x248/0x3b0 drivers/gpu/drm/drm_atomic_helper.c:3348 drm_mode_cursor_universal drivers/gpu/drm/drm_plane.c:1256 [inline] drm_mode_cursor_common+0xb7e/0x12d0 drivers/gpu/drm/drm_plane.c:1315 drm_mode_cursor_ioctl+0xbf/0x110 drivers/gpu/drm/drm_plane.c:1365 drm_ioctl_kernel+0x2cf/0x390 drivers/gpu/drm/drm_ioctl.c:797 drm_ioctl+0x67f/0xb10 drivers/gpu/drm/drm_ioctl.c:894 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fcd9898f7c9 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffe37777948 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fcd98be5fa0 RCX: 00007fcd9898f7c9 RDX: 0000200000000280 RSI: 00000000c01c64a3 RDI: 0000000000000003 RBP: 00007ffe377779a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007fcd98be5fa0 R14: 00007fcd98be5fa0 R15: 0000000000000003 --- 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. If the report is already addressed, 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 report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup