[Bug 104259] [BAT] igt at gem_sync@basic-all - fail - Failed assertion: !"GPU hung"

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=104259

--- Comment #1 from Chris Wilson <chris at chris-wilson.co.uk> ---
It was anticipated.

<7>[  228.586379] [IGT] gem_sync: executing
<4>[  228.606909] Setting dangerous option reset - tainting kernel
<7>[  228.609394] [IGT] gem_sync: starting subtest basic-all
<7>[  230.752959] missed_breadcrumb rcs0 missed breadcrumb at
intel_breadcrumbs_hangcheck+0x5a/0x80 [i915]
<7>[  230.752988] missed_breadcrumb     current seqno 2854cd, last 2854ce,
hangcheck 2854cd [0 ms], inflight 1
<7>[  230.752995] missed_breadcrumb     Reset count: 0 (global 4)
<7>[  230.753004] missed_breadcrumb     Requests:
<7>[  230.753013] missed_breadcrumb             first  2854ce [2:2854d8]
prio=-2147483648 @ 2137ms: [global]
<7>[  230.753020] missed_breadcrumb             last   2854ce [2:2854d8]
prio=-2147483648 @ 2137ms: [global]
<7>[  230.753028] missed_breadcrumb             active 2854ce [2:2854d8]
prio=-2147483648 @ 2137ms: [global]
<7>[  230.753039] missed_breadcrumb             [head 9238, postfix 9250, tail
9260, batch 0x00000000_00325000]
<7>[  230.753044] missed_breadcrumb     RING_START: 0x00004000 [0x00004000]
<7>[  230.753048] missed_breadcrumb     RING_HEAD:  0x00009220 [0x00009210]
<7>[  230.753053] missed_breadcrumb     RING_TAIL:  0x00009260 [0x00009260]
<7>[  230.753058] missed_breadcrumb     RING_CTL:   0x0001f001
<7>[  230.753063] missed_breadcrumb     RING_MODE:  0x00000000
<7>[  230.753068] missed_breadcrumb     ACTHD:  0x00000000_155f7f94
<7>[  230.753073] missed_breadcrumb     BBADDR: 0x00000000_00000000
<7>[  230.753078] missed_breadcrumb             E 2854ce [2:2854d8]
prio=-2147483648 @ 2137ms: [global]
<7>[  230.753083] missed_breadcrumb     gem_sync [3298] waiting for 2854ce
<7>[  230.753088] missed_breadcrumb IRQ? 0x1 (breadcrumbs? yes) (execlists? no)
<7>[  230.753092] missed_breadcrumb Idle? no
<7>[  230.753097] missed_breadcrumb 
<6>[  236.783524] [drm] GPU HANG: ecode 3:0:0x7dffffc1, in gem_sync [3296],
reason: Hang on rcs0, action: reset

Shows a TLB miss and walking off into the empty GTT

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