[Bug 105900] [CI] igt at gem_exec_* - fail - Failed assertion: !"GPU hung"

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=105900

--- Comment #6 from Chris Wilson <chris at chris-wilson.co.uk> ---
(In reply to Chris Wilson from comment #5)
> (In reply to Martin Peres from comment #4)
> > https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_29/fi-cnl-y3/
> > igt at gem_exec_await@wide-contexts.html
> > 
> > (gem_exec_await:2291) igt_aux-CRITICAL: Test assertion failure function
> > sig_abort, file ../lib/igt_aux.c:481:
> > (gem_exec_await:2291) igt_aux-CRITICAL: Failed assertion: !"GPU hung"
> > Subtest wide-contexts failed.
> 
> This is a different issue. The GPU hang here is a result of hitting a
> blocking ioctl in the test.

Using Execlists submission
Ring size: 143 batches

If we can only fit 143 batches in a ring, why did we submit 144?...

<7>[  134.752155] hangcheck bcs0
<7>[  134.752174] hangcheck     current seqno c707, last c797, hangcheck c707
[4031 ms]
<7>[  134.752178] hangcheck     Reset count: 0 (global 0)
<7>[  134.752181] hangcheck     Requests:
<7>[  134.752192] hangcheck             first  c708 [4e0a:1] prio=0 @ 4047ms:
gem_exec_await[2291]/3
<7>[  134.752196] hangcheck             last   c797 [4e0a:90] prio=0 @ 4037ms:
gem_exec_await[2291]/3
<7>[  134.752207] hangcheck             active c708 [4e0a:1] prio=0 @ 4047ms:
gem_exec_await[2291]/3
<7>[  134.752212] hangcheck             [head 0000, postfix 0030, tail 0050,
batch 0x00000000_00040000]
<7>[  134.752215] hangcheck             ring->start:  0x035a8000
<7>[  134.752218] hangcheck             ring->head:   0x00000000
<7>[  134.752221] hangcheck             ring->tail:   0x00002cf8
<7>[  134.752224] hangcheck             ring->emit:   0x00002d00
<7>[  134.752227] hangcheck             ring->space:  0x000012c0
<7>[  134.752232] hangcheck     RING_START: 0x035a8000
<7>[  134.752237] hangcheck     RING_HEAD:  0x00000020
<7>[  134.752241] hangcheck     RING_TAIL:  0x00002cf8
<7>[  134.752246] hangcheck     RING_CTL:   0x00003001
<7>[  134.752252] hangcheck     RING_MODE:  0x00000000
<7>[  134.752256] hangcheck     RING_IMR: feffffff
<7>[  134.752263] hangcheck     ACTHD:  0x00000000_00040000
<7>[  134.752271] hangcheck     BBADDR: 0x00000000_00040001
<7>[  134.752277] hangcheck     DMA_FADDR: 0x00000000_00040200
<7>[  134.752282] hangcheck     IPEIR: 0x00000000
<7>[  134.752286] hangcheck     IPEHR: 0x18800101
<7>[  134.752292] hangcheck     Execlist status: 0x00024049 0000057e
<7>[  134.752297] hangcheck     Execlist CSB read 1 [1 cached], write 1 [1 from
hws], interrupt posted? no, tasklet queued? no (enabled)
<7>[  134.752302] hangcheck             ELSP[0] count=1, rq: c797 [4e0a:90]
prio=0 @ 4037ms: gem_exec_await[2291]/3
<7>[  134.752305] hangcheck             ELSP[1] idle
<7>[  134.752308] hangcheck             HW active? 0x5
<7>[  134.752355] hangcheck             E c708 [4e0a:1] prio=0 @ 4047ms:
gem_exec_await[2291]/3
<7>[  134.752392] hangcheck             E c709 [4e0a:2] prio=0 @ 4047ms:
gem_exec_await[2291]/3
<7>[  134.752396] hangcheck             E c70a [4e0a:3] prio=0 @ 4047ms:
gem_exec_await[2291]/3
<7>[  134.752399] hangcheck             E c70b [4e0a:4] prio=0 @ 4047ms:
gem_exec_await[2291]/3
<7>[  134.752403] hangcheck             E c70c [4e0a:5] prio=0 @ 4047ms:
gem_exec_await[2291]/3
<7>[  134.752407] hangcheck             E c70d [4e0a:6] prio=0 @ 4047ms:
gem_exec_await[2291]/3
<7>[  134.752411] hangcheck             E c70e [4e0a:7] prio=0 @ 4047ms:
gem_exec_await[2291]/3
<7>[  134.752427] hangcheck             ...skipping 136 executing requests...
<7>[  134.752431] hangcheck             E c797 [4e0a:90] prio=0 @ 4037ms:
gem_exec_await[2291]/3
<7>[  134.752434] hangcheck             Queue priority: -2147483648

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