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  1. Qt
  2. QTBUG-136257

QtWebEngine based browser shows nothing with panthor driver

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Details

    • Bug
    • Resolution: Unresolved
    • P1: Critical
    • None
    • 6.9.0
    • WebEngine
    • None

    Description

      Very similar issue to QTBUG-136160 – QtWebEngine based qutebrowser shows nothing after upgrade but with very recent Mesa driver "panthor" for  ARM devices like Mali G610 found in RK3588 based Radxa Rock 5B board.

      It appears the place where it fails is also different. Unfortunately I don't have debuginfo for WebEngine (it's already hard to build it without them) but I can provide functions/values higher up in stack:

      (gdb) bt
#0  0x0000ffffe1d1f2cc in drmPrimeHandleToFD () from /usr/lib64/libdrm.so.2
#1  0x0000ffffa39d93fc in pan_kmod_bo_export (bo=0x1aa6710) at ../src/panfrost/lib/kmod/pan_kmod.h:568
#2  0x0000ffffa39da500 in panfrost_bo_export (bo=0x1445140) at ../src/gallium/drivers/panfrost/pan_bo.c:543
#3  0x0000ffffa39df730 in panfrost_resource_get_handle (pscreen=0x1441ff0, ctx=0x0, pt=0x1aa62b0, handle=0xffffffffd268, usage=2) at ../src/gallium/drivers/panfrost/pan_resource.c:195
#4  0x0000ffffa295caa0 in dri2_query_image_by_resource_handle (image=0x1aa67e0, attrib=8199, value=0xffffffffd530) at ../src/gallium/frontends/dri/dri2.c:1246
#5  0x0000ffffa295d060 in dri2_query_image (image=0x1aa67e0, attrib=8199, value=0xffffffffd530) at ../src/gallium/frontends/dri/dri2.c:1372
#6  0x0000ffffb189023c in dri2_export_dma_buf_image_mesa (disp=0x1436a20, img=0x1aa67b0, fds=0xffffffffd530, strides=0x0, offsets=0x0) at ../src/egl/drivers/dri2/egl_dri2.c:2768
#7  0x0000ffffb1880714 in eglExportDMABUFImageMESA (dpy=0x1436a20, image=0x1aa67b0, fds=0xffffffffd530, strides=0x0, offsets=0x0) at ../src/egl/main/eglapi.c:2521
#8  0x0000ffffb1877ca8 in dispatch_eglExportDMABUFImageMESA (dpy=0x1436a20, image=0x1aa67b0, fds=0xffffffffd530, strides=0x0, offsets=0x0) at src/egl/g_egldispatchstubs.c:131
#9  0x0000ffffe4a0fc3c in ?? () from /usr/lib64/libQt6WebEngineCore.so.6

      and only following error is logged:

      MESA: error: drmPrimeHandleToFD() failed (err=22)

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          relates to

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-136548 QtWebengine dumps core on Plasma/Wayland applications after upgrade from 6.8 -> 6.9

          • P1: Critical - Urgent and Important, will STOP the release if matched with set FixVersion field. This includes regressions from the last version that are not edge cases; Data loss; Build issues; Flaky tests; All but the most unlikely crashes/lockups/hanging; Serious usability issues and embarrassing bugs & Bugs critical to a deliverable. This is the highest possible priority for requirements.
          • Closed
          For Gerrit Dashboard: QTBUG-136257
          # Subject Branch Project Status CR V
          644202,1 Create EGLImage with eglCreateDRMImageMESA() for exporting dma_buf dev qt/qtwebengine Status: NEW +1 0

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              pvarga Peter Varga
              jpalus Jan Palus
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              Dates

                Created:
                Updated:

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