[Bug 111034] [CI][SHARDS] igt at i915_hangman@error-state-capture-bcs0 - fail - Failed assertion: found

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=111034

--- Comment #2 from Chris Wilson <chris at chris-wilson.co.uk> ---
<7> [807.223529] hangcheck bcs0
<7> [807.223532] hangcheck      Awake? 1
<7> [807.223534] hangcheck      Hangcheck: 12032 ms ago
<7> [807.223535] hangcheck      Reset count: 0 (global 1023)
<7> [807.223537] hangcheck      Requests:
<7> [807.223541] hangcheck      RING_START: 0x00021000
<7> [807.223544] hangcheck      RING_HEAD:  0x00001368
<7> [807.223546] hangcheck      RING_TAIL:  0x00001378
<7> [807.223549] hangcheck      RING_CTL:   0x0001f001
<7> [807.223552] hangcheck      RING_MODE:  0x00000000
<7> [807.223554] hangcheck      RING_IMR: ffbfffff
<7> [807.223557] hangcheck      ACTHD:  0x00000000_7fff0d2c
<7> [807.223559] hangcheck      BBADDR: 0x00000000_7fff052b
<7> [807.223561] hangcheck      DMA_FADDR: 0x00000000_7fff0ec0
<7> [807.223564] hangcheck      IPEIR: 0x00000008
<7> [807.223566] hangcheck      IPEHR: 0x00000000
<7> [807.223570] hangcheck              E  6:a9949-  @ 12049ms:
i915_hangman[5167]
<7> [807.223572] hangcheck HWSP:
<7> [807.223575] hangcheck [0000] 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000
<7> [807.223576] hangcheck *
<7> [807.223579] hangcheck [0100] 000a9925 00000000 00000000 00000000 00000000
00000000 00000000 00000000
<7> [807.223581] hangcheck [0120] 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000
<7> [807.223582] hangcheck *

The seqno suffered a panic attack and went backwards. And because the seqno did
not point to a valid request, we ended up with no ringbuffer to inspect.

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