[Mesa-dev] [PATCH 1/2] egl/android: fix regression in drm_gralloc path
Mauro Rossi
issor.oruam at gmail.com
Wed Aug 15 08:13:30 UTC 2018
Hi Robert,
Il giorno mer 15 ago 2018 alle ore 09:37 Robert Foss <
robert.foss at collabora.com> ha scritto:
> Hey Mauro,
>
> Thanks for catching this.
>
> On 14/08/2018 22.27, Mauro Rossi wrote:
> > This patch fixes a regression in mesa 18.2 and mesa-dev branches
> > for HAVE_DRM_GRALLOC code path which is causing black screen on Android
> > and prevents boot due to SIGSEGV MAPERR crash related to unproper
> handling
> > of drm_gralloc drm FD in new droid_open_device() path.
> >
> > The problem due to c7bb82136b ("egl/android: Add DRM node probing and
> filtering")
> >
> > ... 3173 3307 D GRALLOC-DRM: drmOpen radeon: 71
> > ... 3173 3307 I GRALLOC-RADEON: detected chipset 0x6841 family 0x31
> (vram size 238MiB, gart size 1021MiB)
> > ... 3173 3307 I GRALLOC-DRM: create radeon for driver radeon
> > ... 3173 3307 W EGL-MAIN: Could not get native buffer FD
> > --------- beginning of crash
> > ... 3173 3307 F libc : Fatal signal 11 (SIGSEGV), code 1, fault
> addr 0x18 in tid 3307 (RenderThread), pid 3173 (ndroid.systemui)
> > ... 0 0 D : [drm:radeon_crtc_page_flip_target [radeon]]
> flip-ioctl() cur_rbo = 000000003512328a, new_rbo = 000000
> > ... 3420 3420 I crash_dump64: performing dump of process 3173 (target
> tid = 3307)
> > ... 3420 3420 F DEBUG : *** *** *** *** *** *** *** *** *** *** ***
> *** *** *** *** ***
> > ... 3420 3420 F DEBUG : Build fingerprint:
> 'Android-x86/android_x86_64/x86_64:8.1.0/OPM6.171019.030.E1/uten07210645:userdebug/test-keys'
> > ... 3420 3420 F DEBUG : Revision: '0'
> > ... 3420 3420 F DEBUG : ABI: 'x86_64'
> > ... 3420 3420 F DEBUG : pid: 3173, tid: 3307, name: RenderThread
> >>> com.android.systemui <<<
> > ... 3420 3420 F DEBUG : signal 11 (SIGSEGV), code 1 (SEGV_MAPERR),
> fault addr 0x18
> > ... 3420 3420 F DEBUG : Cause: null pointer dereference
> > ... 3420 3420 F DEBUG : rax 0000000000000000 rbx
> 00007c6ac3a3eee0 rcx 0000000000000000 rdx 0000000000000038
> > ... 3420 3420 F DEBUG : rsi 0000000000000000 rdi
> 00007c6ab5bfeaa0
> > ... 3420 3420 F DEBUG : r8 00007c6ab04c16e4 r9
> 00007c6b4ee6a220 r10 0000000000000000 r11 0000000000000200
> > ... 3420 3420 F DEBUG : r12 0000000000000000 r13
> 0000000000000000 r14 0000000000000001 r15 00007c6ab04c1600
> > ... 3420 3420 F DEBUG : cs 0000000000000033 ss
> 000000000000002b
> > ... 3420 3420 F DEBUG : rip 00007c6ab0cee444 rbp
> 00007c6ac3ae8400 rsp 00007c6ab5bfea80 eflags 0000000000010246
> > ... 3420 3420 F DEBUG :
> > ... 3420 3420 F DEBUG : backtrace:
> > ... 3420 3420 F DEBUG : #00 pc 000000000056b444
> /system/vendor/lib64/dri/gallium_dri.so (st_update_framebuffer_state+660)
> > ... 3420 3420 F DEBUG : #01 pc 0000000000569d61
> /system/vendor/lib64/dri/gallium_dri.so (st_validate_state+561)
> > ... 3420 3420 F DEBUG : #02 pc 0000000000572374
> /system/vendor/lib64/dri/gallium_dri.so (st_Clear+116)
> > ... 3420 3420 F DEBUG : #03 pc 000000000004a9c0
> /android/system/lib64/libhwui.so
> > ... 3420 3420 F DEBUG : #04 pc 0000000000085cab
> /android/system/lib64/libhwui.so
> > ... 3420 3420 F DEBUG : #05 pc 0000000000085f31
> /android/system/lib64/libhwui.so
> > ... 3420 3420 F DEBUG : #06 pc 000000000006e8c1
> /android/system/lib64/libhwui.so
> > ... 3420 3420 F DEBUG : #07 pc 000000000006e3d9
> /android/system/lib64/libhwui.so
> > ... 3420 3420 F DEBUG : #08 pc 000000000006c4e3
> /android/system/lib64/libhwui.so
> > ... 3420 3420 F DEBUG : #09 pc 00000000000704c8
> /android/system/lib64/libhwui.so
> > ... 3420 3420 F DEBUG : #10 pc 0000000000077fb9
> /android/system/lib64/libhwui.so
> > ... 3420 3420 F DEBUG : #11 pc 00000000000117fa
> /android/system/lib64/libutils.so
> > ... 3420 3420 F DEBUG : #12 pc 00000000000ba193
> /android/system/lib64/libandroid_runtime.so
> > ... 3420 3420 F DEBUG : #13 pc 0000000000079f0b
> /android/system/lib64/libc.so
> > ... 3420 3420 F DEBUG : #14 pc 0000000000028c5d
> /android/system/lib64/libc.so
> > ... 3420 3420 F DEBUG : #15 pc 0000000000027555
> /android/system/lib64/libc.so
> >
> > To avoid the crash the former existing working droid_open_device() is
> restored,
> > renamed droid_open_device_drm_gralloc() and kept within HAVE_DRM_GRALLOC
> braces.
> >
> > NOTE: Definition of enum{} for GRALLOC_MODULE_PERFORM_GET_DRM_FD
> > is not necessary and it is actually causing a redefinition building
> error,
> > because in HAVE_DRM_GRALLOC path gralloc_drm.h is already exported
> > by libgralloc_drm which is currently still a dependency.
> >
> > Tested with mesa-dev and mesa 18.2 branch and oreo-x86 bootanimation
> > and Androdi GUI booting is fixed with i965, nouveau, radeon.
> >
> > The changes are compatible with gbm_gralloc, I've tested build with hwc
> too.
>
> I would maybe consider shortening the commit message a little bit, or at
> least
> remove
> the crash-logs.
>
Of course, I will reduce the final commit message.
The segfault log was provided as a mean to understand what went wrong,
in case you/other developers will pursue the goal of having
one droid_open_device() procedure
applicable to all gralloc implementation
and I will be available to test there is no regression on android-x86
drm_gralloc.
Kind regards
Mauro
>
> >
> > Fixes: c7bb82136b ("egl/android: Add DRM node probing and filtering")
> > Cc: "18.2" <mesa-stable at lists.freedesktop.org>
> > Signed-off-by: Mauro Rossi <issor.oruam at gmail.com>
> > ---
> > src/egl/drivers/dri2/platform_android.c | 23 +++++++++++++++++++++++
> > 1 file changed, 23 insertions(+)
> >
> > diff --git a/src/egl/drivers/dri2/platform_android.c
> b/src/egl/drivers/dri2/platform_android.c
> > index cc16fd8118..834bbd258e 100644
> > --- a/src/egl/drivers/dri2/platform_android.c
> > +++ b/src/egl/drivers/dri2/platform_android.c
> > @@ -1134,6 +1134,25 @@ droid_add_configs_for_visuals(_EGLDriver *drv,
> _EGLDisplay *dpy)
> > return (config_count != 0);
> > }
> >
> > +#ifdef HAVE_DRM_GRALLOC
> > +static int
> > +droid_open_device_drm_gralloc(struct dri2_egl_display *dri2_dpy)
> > +{
> > + int fd = -1, err = -EINVAL;
> > +
> > + if (dri2_dpy->gralloc->perform)
> > + err = dri2_dpy->gralloc->perform(dri2_dpy->gralloc,
> > +
> GRALLOC_MODULE_PERFORM_GET_DRM_FD,
> > + &fd);
> > + if (err || fd < 0) {
> > + _eglLog(_EGL_WARNING, "fail to get drm fd");
> > + fd = -1;
> > + }
> > +
> > + return (fd >= 0) ? fcntl(fd, F_DUPFD_CLOEXEC, 3) : -1;
> > +}
> > +#endif /* HAVE_DRM_GRALLOC */
> > +
> > static const struct dri2_egl_display_vtbl droid_display_vtbl = {
> > .authenticate = NULL,
> > .create_window_surface = droid_create_window_surface,
> > @@ -1384,7 +1403,11 @@ dri2_initialize_android(_EGLDriver *drv,
> _EGLDisplay *disp)
> >
> > disp->DriverData = (void *) dri2_dpy;
> >
> > + #ifdef HAVE_DRM_GRALLOC
> > + dri2_dpy->fd = droid_open_device_drm_gralloc(dri2_dpy);
> > + #else
> > dri2_dpy->fd = droid_open_device(disp);
> > + #endif
> > if (dri2_dpy->fd < 0) {
> > err = "DRI2: failed to open device";
> > goto cleanup;
> >
>
> This does seem fairly un-intrusive if the
> GRALLOC_MODULE_PERFORM_GET_DRM_FD
> define is already being provided by drm_gralloc.
>
> If we are going to support the drm_gralloc usecase and this patch is needed
> to do so, I'm all for it.
>
> With the above suggestion fixed:
> Reviewed-by: Robert Foss <robert.foss at collabora.com>
>
>
> Rob.
>
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