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Date:      Sat, 08 Jan 2022 18:55:01 +0000
From:      bugzilla-noreply@freebsd.org
To:        ports-bugs@FreeBSD.org
Subject:   [Bug 261041] mesa-devel: Crash when built with debug symbols. Failed Assertion in __gen_uint_nonzero
Message-ID:  <bug-261041-7788@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D261041

            Bug ID: 261041
           Summary: mesa-devel: Crash when built with debug symbols.
                    Failed Assertion in __gen_uint_nonzero
           Product: Ports & Packages
           Version: Latest
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Many People
          Priority: ---
         Component: Individual Port(s)
          Assignee: ports-bugs@FreeBSD.org
          Reporter: ashafer@badland.io

Updated to mesa-devel 21.3.b.2451 today, and was greeted with the following
crash while trying to start any graphical application (my wayland composito=
r,
but also while starting X).=20

This happens only when building with:
make WITH_DEBUG=3Dyes STRIP=3D=20

Reproduced by just running startxfce4. Building without debug works fine for
me, which explains why the binary package doesn't have this problem.

Here's the backtrace from gdb Xorg:
Assertion failed: (v !=3D 0ull), function __gen_uint_nonzero, file
src/intel/genxml/gen9_pack.h, line 82.

Thread 1 "MainThread" received signal SIGABRT, Aborted.
Sent by thr_kill() from pid 10603 and user 0.
thr_kill () at thr_kill.S:4
warning: Source file is more recent than executable.
4       RSYSCALL(thr_kill)
(gdb) bt
#0  thr_kill () at thr_kill.S:4
#1  0x00000008009f50d4 in __raise (s=3Ds@entry=3D6) at
/usr/freebsd-src/lib/libc/gen/raise.c:52
#2  0x0000000800aa6769 in abort () at
/usr/freebsd-src/lib/libc/stdlib/abort.c:67
#3  0x00000008009d7ea1 in __assert (func=3D<optimized out>, file=3D<optimiz=
ed out>,
line=3D<optimized out>, failedexpr=3D<optimized out>)
    at /usr/freebsd-src/lib/libc/gen/assert.c:51
#4  0x00000008036c6707 in __gen_uint_nonzero (v=3D0, start=3D22, end=3D28) =
at
src/intel/genxml/gen9_pack.h:82
#5  GFX9_3DSTATE_STENCIL_BUFFER_pack (data=3D0x0, dst=3D0x8013e0a54,
values=3D0x7fffffffe3a0) at src/intel/genxml/gen9_pack.h:6549
#6  isl_gfx9_emit_depth_stencil_hiz_s (dev=3D0x801213360, batch=3D0x8013e0a=
34,
info=3D0x7fffffffe4e0) at ../src/intel/isl/isl_emit_depth_stencil.c:324
#7  0x0000000803657391 in isl_emit_depth_stencil_hiz_s (dev=3D0x801213360,
batch=3D0x8013e0a34, info=3D0x7fffffffe4e0) at ../src/intel/isl/isl.c:2462
#8  0x0000000803c279a8 in iris_set_framebuffer_state (ctx=3D0x80aa318b0,
state=3D0x80aa594d8) at ../src/gallium/drivers/iris/iris_state.c:3181
#9  0x0000000802f2227f in tc_call_set_framebuffer_state (pipe=3D0x80aa318b0,
call=3D0x80aa594d0, last=3D0x80aa59638)
    at ../src/gallium/auxiliary/util/u_threaded_context.c:1064
#10 0x0000000802f219e8 in tc_batch_execute (job=3D0x80aa593e8, gdata=3D0x0,
thread_index=3D0)
    at ../src/gallium/auxiliary/util/u_threaded_context.c:211
#11 0x0000000802f217f2 in _tc_sync (tc=3D0x80aa58040, info=3D0x801f39a16 "n=
ormal",
func=3D0x801f10e8a "tc_flush")
    at ../src/gallium/auxiliary/util/u_threaded_context.c:362
#12 0x0000000802f28420 in tc_flush (_pipe=3D0x80aa58040, fence=3D0x0, flags=
=3D0) at
../src/gallium/auxiliary/util/u_threaded_context.c:2997
#13 0x00000008029ff0f5 in st_flush (st=3D0x801320c00, fence=3D0x0, flags=3D=
0) at
../src/mesa/state_tracker/st_cb_flush.c:61
#14 0x00000008029ff1da in st_glFlush (ctx=3D0x80aa99a40, gallium_flush_flag=
s=3D0)
at ../src/mesa/state_tracker/st_cb_flush.c:95
#15 0x000000080265af4f in _mesa_flush (ctx=3D0x80aa99a40) at
../src/mesa/main/context.c:1656
#16 0x000000080265b090 in _mesa_Flush () at ../src/mesa/main/context.c:1690
#17 0x0000000801d42893 in shared_dispatch_stub_217 () at
src/mapi/shared-glapi/glapi_mapi_tmp.h:21678
#18 0x0000000801b3a8e9 in  () at /usr/local/lib/xorg/modules/libglamoregl.so
#19 0x0000000801b1824b in  () at
/usr/local/lib/xorg/modules/drivers/modesetting_drv.so
#20 0x0000000801b1771b in  () at
/usr/local/lib/xorg/modules/drivers/modesetting_drv.so
#21 0x00000000002a49de in BlockHandler ()
#22 0x000000000041501a in WaitForSomething ()
#23 0x00000000002994ac in  ()
#24 0x00000000002a3e3c in  ()
#25 0x000000000028c520 in _start ()

uname -a:=20
FreeBSD 14.0-CURRENT FreeBSD 14.0-CURRENT #6 main-n251309-fc21aafe5ff2: Sat=
 Dec
 4 00:13:35 EST 2021=20=20=20=20
root@mick:/usr/obj/usr/freebsd-src/amd64.amd64/sys/GENERIC-NODEBUG  amd64

Also installed are mesa-dri/mesa-libs at 21.1.8, drm-kmod (aka
drm-current-kmod-5.4.144.g20211012)

It seems someone noticed this on android:
https://gitlab.freedesktop.org/mesa/mesa/-/issues/5653

Sounds like a recent mesa commit might have started tripping the assertions
they added last October? Feels like a mesa issue, but somehow might be
triggered by how we build WITH_DEBUG? Can someone else please verify this to
rule out it being an issue with my local build environment?

--=20
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