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<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - [snb] GPU HANG: ecode 6:0:0x85fffffc, in neverball"
href="https://bugs.freedesktop.org/show_bug.cgi?id=106022#c4">Comment # 4</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - [snb] GPU HANG: ecode 6:0:0x85fffffc, in neverball"
href="https://bugs.freedesktop.org/show_bug.cgi?id=106022">bug 106022</a>
from <span class="vcard"><a class="email" href="mailto:lionel.g.landwerlin@linux.intel.com" title="Lionel Landwerlin <lionel.g.landwerlin@linux.intel.com>"> <span class="fn">Lionel Landwerlin</span></a>
</span></b>
<pre>There are unknown instructions in the content of one of the BCS batchbuffer (in
both error states) :
--- ring buffer (bcs0) at 0x00000000 001f6000
0x001f6000: 0x11000001: MI_LOAD_REGISTER_IMM
0x001f6000: 0x11000001 : Dword 0
DWord Length: 1
Byte Write Disables: 0
0x001f6004: 0x00002044 : Dword 1
Register Offset: 0x00002044
0x001f6008: 0x0057fe00 : Dword 2
Data DWord: 5766656
0x001f600c: 0x11000001: MI_LOAD_REGISTER_IMM
0x001f600c: 0x11000001 : Dword 0
DWord Length: 1
Byte Write Disables: 0
0x001f6010: 0x00012040 : Dword 1
Register Offset: 0x00012040
0x001f6014: 0x0057fe00 : Dword 2
Data DWord: 5766656
0x001f6018: 0x10800001: MI_STORE_DATA_INDEX
0x001f6018: 0x10800001 : Dword 0
DWord Length: 1
0x001f601c: 0x000000c0 : Dword 1
Offset: 48
0x001f6020: 0x0057fe00 : Dword 2
Data DWord 0: 5766656
0x001f6024: 0x01000000: MI_USER_INTERRUPT
0x001f6024: 0x01000000 : Dword 0
0x001f6028: unknown instruction 13244001
0x001f6034: 0x00000000: MI_NOOP
0x001f6034: 0x00000000 : Dword 0
Identification Number: 0
Identification Number Register Write Enable: false
0x001f6038: 0x18800100: MI_BATCH_BUFFER_START
0x001f6038: 0x18800100 : Dword 0
DWord Length: 0
Address Space Indicator: 1 (PPGTT)
Clear Command Buffer Enable: false
0x001f603c: 0x16a2a000 : Dword 1
Batch Buffer Start Address: 0x16a2a000
The other has 2 :
--- ring buffer (bcs0) at 0x00000000 001f6000
0x001f6000: unknown instruction 13204001
0x001f600c: 0x00000000: MI_NOOP
0x001f600c: 0x00000000 : Dword 0
Identification Number: 0
Identification Number Register Write Enable: false
0x001f6010: 0x11000001: MI_LOAD_REGISTER_IMM
0x001f6010: 0x11000001 : Dword 0
DWord Length: 1
Byte Write Disables: 0
0x001f6014: 0x00002044 : Dword 1
Register Offset: 0x00002044
0x001f6018: 0x0001dd78 : Dword 2
Data DWord: 122232
0x001f601c: 0x11000001: MI_LOAD_REGISTER_IMM
0x001f601c: 0x11000001 : Dword 0
DWord Length: 1
Byte Write Disables: 0
0x001f6020: 0x00012040 : Dword 1
Register Offset: 0x00012040
0x001f6024: 0x0001dd78 : Dword 2
Data DWord: 122232
0x001f6028: 0x10800001: MI_STORE_DATA_INDEX
0x001f6028: 0x10800001 : Dword 0
DWord Length: 1
0x001f602c: 0x000000c0 : Dword 1
Offset: 48
0x001f6030: 0x0001dd78 : Dword 2
Data DWord 0: 122232
0x001f6034: 0x01000000: MI_USER_INTERRUPT
0x001f6034: 0x01000000 : Dword 0
0x001f6038: 0x0b140001: MI_SEMAPHORE_MBOX
0x001f6038: 0x0b140001 : Dword 0
DWord Length: 1
Register Select: 0 (RVSYNC)
0x001f603c: 0x0011cfd6 : Dword 1
Semaphore Data Dword: 1167318
0x001f6044: 0x00000000: MI_NOOP
0x001f6044: 0x00000000 : Dword 0
Identification Number: 0
Identification Number Register Write Enable: false
0x001f6048: unknown instruction 13244001
0x001f6054: 0x00000000: MI_NOOP
0x001f6054: 0x00000000 : Dword 0
Identification Number: 0
Identification Number Register Write Enable: false
0x001f6058: 0x18800100: MI_BATCH_BUFFER_START
0x001f6058: 0x18800100 : Dword 0
DWord Length: 0
Address Space Indicator: 1 (PPGTT)
Clear Command Buffer Enable: false
0x001f605c: 0x00040000 : Dword 1
Batch Buffer Start Address: 0x00040000
I can't figure what instruction that is... It seems to be a synchronization
batch emitted by the kernel.
Could you tell us what version of the kernel you were running before/after your
upgrade?
Thanks!</pre>
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