Nouveau, libgallium?

Hello folks,

I saw another issue that seems to point to mesa and nouveau, but this
time with more specifics -- it seems libgallium was the one to
actually segfault:

```
[501174.329820] nouveau 0000:0c:00.0: gr: TRAP ch 11 [00ff6f1000 Renderer[3570]]
[501174.329834] nouveau 0000:0c:00.0: gr: GPC0/TPC1/MP trap: global
00000004 [MULTIPLE_WARP_ERRORS] warp 3d000d [OOR_REG]
[501174.329866] nouveau 0000:0c:00.0: gr: TRAP ch 11 [00ff6f1000 Renderer[3570]]
[501174.329875] nouveau 0000:0c:00.0: gr: GPC0/TPC2/MP trap: global
00000004 [MULTIPLE_WARP_ERRORS] warp 3f000d [OOR_REG]
[501174.329893] nouveau 0000:0c:00.0: gr: TRAP ch 11 [00ff6f1000 Renderer[3570]]
[501174.329901] nouveau 0000:0c:00.0: gr: GPC0/TPC0/MP trap: global
00000004 [MULTIPLE_WARP_ERRORS] warp 3f000d [OOR_REG]
[501174.329928] nouveau 0000:0c:00.0: gr: TRAP ch 11 [00ff6f1000 Renderer[3570]]
[501174.329937] nouveau 0000:0c:00.0: gr: GPC0/TPC1/MP trap: global
00000004 [MULTIPLE_WARP_ERRORS] warp 3f000d [OOR_REG]
[501174.329962] nouveau 0000:0c:00.0: gr: TRAP ch 11 [00ff6f1000 Renderer[3570]]
[501174.329971] nouveau 0000:0c:00.0: gr: GPC0/TPC2/MP trap: global
00000004 [MULTIPLE_WARP_ERRORS] warp 3c000d [OOR_REG]
[501174.329989] nouveau 0000:0c:00.0: gr: TRAP ch 11 [00ff6f1000 Renderer[3570]]
[501174.329997] nouveau 0000:0c:00.0: gr: GPC0/TPC0/MP trap: global
00000004 [MULTIPLE_WARP_ERRORS] warp 3c000d [OOR_REG]
[501174.330023] nouveau 0000:0c:00.0: gr: TRAP ch 11 [00ff6f1000 Renderer[3570]]
[501174.330031] nouveau 0000:0c:00.0: gr: GPC0/TPC1/MP trap: global
00000004 [MULTIPLE_WARP_ERRORS] warp 3c000d [OOR_REG]
[501178.626178] nouveau 0000:0c:00.0: fifo: SCHED_ERROR 0a [CTXSW_TIMEOUT]
[501178.626247] nouveau 0000:0c:00.0:
fifo:000000:000b:[Renderer[3570]] rc scheduled
[501178.626251] nouveau 0000:0c:00.0: fifo:000000: rc scheduled
[501178.626268] nouveau 0000:0c:00.0:
fifo:000000:000b:000b:[Renderer[3570]] errored - disabling channel
[501178.626274] nouveau 0000:0c:00.0: Xorg[2273]: channel 11 killed!
[513839.128446] nouveau 0000:0c:00.0: fifo: SCHED_ERROR 0a [CTXSW_TIMEOUT]
[513839.128498] nouveau 0000:0c:00.0:
fifo:000000:0007:[gnome-shell[2385]] rc scheduled
[513839.128502] nouveau 0000:0c:00.0: fifo:000000: rc scheduled
[513839.128518] nouveau 0000:0c:00.0:
fifo:000000:0007:0007:[gnome-shell[2385]] errored - disabling channel
[513839.128523] nouveau 0000:0c:00.0: Xorg[2273]: channel 7 killed!
[513839.141817] show_signal_msg: 18 callbacks suppressed
[513839.141819] gnome-shell[2385]: segfault at 560800000000 ip
00007fa54dd2080c sp 00007fff9f989b30 error 4 in
libgallium-25.0.7-2.so[b2080c,7fa54d2e1000+173b000] likely on CPU 21
(core 5, socket 0)
[513839.141826] Code: 10 40 01 00 0f 8e c4 00 00 00 41 8b 45 00 48 8b
3c 24 be 01 00 00 00 4c 8d 05 83 22 d3 00 49 8b 55 08 45 8b 4d 00 48
8d 04 80 <4c> 8b 3c c7 49 8b 45 10 48 8b 3d 7d 3d db 01 49 8b 4f 28 48
89 c5

```

Anybody have any suggestions?

Cheers!