[Bug 106858] GPU HANG: ecode 8:1:0x21204b77, in X [437], reason: Hang on bcs0, action: reset

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=106858

--- Comment #1 from Chris Wilson <chris at chris-wilson.co.uk> ---
blt command stream:
  IDLE?: no
  START: 0x00009000
  HEAD:  0x00000068 [0x00000000]
    head = 0x00000068, wraps = 0
  TAIL:  0x00000130 [0x00000078, 0x00000098]
  CTL:   0x00003001
    len=16384, enabled
  MODE:  0x00000000
  HWS:   0x00004000
  ACTHD: 0x00000000 0008801c
    at ring: 0x00000000
  IPEIR: 0x00000008
  IPEHR: 0xdedfb480
  INSTDONE: 0xfffffff7
    busy: HS
  batch: [0x00000000_00000000, 0x00000000_00001000]
  BBADDR: 0x00000000_00088019
  BB_STATE: 0x00000020
  INSTPS: 0x00000000
  INSTPM: 0x00000000
  FADDR: 0x00000000 00088200
  RC PSMI: 0x00000010
  FAULT_REG: 0x000000c9
    Valid
    Invalid PTE Fault
    Engine GFX
    Source ID 25
  SYNC_0: 0x00000000
  SYNC_1: 0x00000000
  SYNC_2: 0x00000000
  GFX_MODE: 0x00008000
  PDP0: 0x000000007bfd9000
  PDP1: 0x000000007bfe6000
  PDP2: 0x000000007bfe6000
  PDP3: 0x000000007bfe6000
  seqno: 0x00000002
  last_seqno: 0x00000005
  waiting: yes
  ring->head: 0x00000000
  ring->tail: 0x00000130
  hangcheck stall: yes
  hangcheck action: dead
  hangcheck action timestamp: 4294899752, 4725752 ms ago
  engine reset count: 0
  ELSP[0]:  pid 437, ban score 0, seqno        2:00000005, prio 1024, emitted
4726568ms ago, head 000000e8, tail 00000130
  Active context: X[437] user_handle 0 hw_id 2, prio 0, ban score 0 guilty 0
active 0


Another early batch (first user), IPEHR of garbage, a page fault. Houston we
have problem.

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