[CCing a few more people and lists that get_maintainers pointed out for qxl] Hi, Thorsten here, the Linux kernel's regression tracker. Top-posting for once, to make this easily accessible to everyone. Thomas, from here it looks like this report that apparently is caused by a change of yours that went into 6.10-rc1 (b33651a5c98dbd ("drm/qxl: Do not pin buffer objects for vmap")) fell through the cracks. Or was progress made to resolve this and I just missed this? Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat) -- Everything you wanna know about Linux kernel regression tracking: https://linux-regtracking.leemhuis.info/about/#tldr If I did something stupid, please tell me, as explained on that page. #regzbot poke On 03.06.24 04:29, Kaplan, David wrote: >> -----Original Message----- >> From: Kaplan, David >> Sent: Sunday, June 2, 2024 9:25 PM >> To: tzimmermann@xxxxxxx; dmitry.osipenko@xxxxxxxxxxxxx; Koenig, >> Christian <Christian.Koenig@xxxxxxx>; zach.rusin@xxxxxxxxxxxx >> Cc: Petkov, Borislav <Borislav.Petkov@xxxxxxx>; regressions@xxxxxxxxxxxxxx >> Subject: [REGRESSION] QXL display malfunction >> >> Hi, >> >> I am running an Ubuntu 19.10 VM with a tip kernel using QXL video and I've >> observed the VM graphics often malfunction after boot, sometimes failing to >> load the Ubuntu desktop or even immediately shutting the guest down. >> When it does load, the guest dmesg log often contains errors like >> >> [ 4.303586] [drm:drm_atomic_helper_commit_planes] *ERROR* head 1 >> wrong: 65376256x16777216+0+0 >> [ 4.586883] [drm:drm_atomic_helper_commit_planes] *ERROR* head 1 >> wrong: 65376256x16777216+0+0 >> [ 4.904036] [drm:drm_atomic_helper_commit_planes] *ERROR* head 1 >> wrong: 65335296x16777216+0+0 >> [ 5.374347] [drm:qxl_release_from_id_locked] *ERROR* failed to find id in >> release_idr >> >> I bisected the issue down to "drm/qxl: Do not pin buffer objects for vmap" >> (b33651a5c98dbd5a919219d8c129d0674ef74299). >> >> The full guest .config and guest XML can be provided if desired. The guest >> kernel has QXL support compiled in and the VM has >> >> <video> >> <model type="qxl" ram="65536" vram="65536" vgamem="16384" >> heads="1" primary="yes"/> >> <address type="pci" domain="0x0000" bus="0x00" slot="0x01" >> function="0x0"/> </video> >> >> The host is Ubuntu 24.04 (stock) running QEMU version 8.2.2. The VM is run >> under virt-manager 4.1.0. If other information would be helpful, just let me >> know. >> >> Thanks --David Kaplan > > Fixing emails...sorry > > --David Kaplan > >