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<base href="https://bugs.freedesktop.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [CI] igt@gem_exec_capture@capture-render - incomplete - GEM_BUG_ON(buf[2 * head + 1] != port->context_id) - kernel BUG at drivers/gpu/drm/i915/intel_lrc.c:869!"
href="https://bugs.freedesktop.org/show_bug.cgi?id=104945">104945</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>[CI] igt@gem_exec_capture@capture-render - incomplete - GEM_BUG_ON(buf[2 * head + 1] != port->context_id) - kernel BUG at drivers/gpu/drm/i915/intel_lrc.c:869!
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr>
<tr>
<th>Version</th>
<td>DRI git
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Other
</td>
</tr>
<tr>
<th>OS</th>
<td>All
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Component</th>
<td>DRM/Intel
</td>
</tr>
<tr>
<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>marta.lofstedt@intel.com
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr></table>
<p>
<div>
<pre><a href="https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_3718/shard-kbl6/igt@gem_exec_capture@capture-render.html">https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_3718/shard-kbl6/igt@gem_exec_capture@capture-render.html</a>
and
<a href="https://intel-gfx-ci.01.org/tree/drm-tip/IGT_4213/shard-kbl6/igt@gem_exec_capture@capture-render.html">https://intel-gfx-ci.01.org/tree/drm-tip/IGT_4213/shard-kbl6/igt@gem_exec_capture@capture-render.html</a>
>From pstore:
<3>[ 69.992810] GEM_BUG_ON(buf[2 * head + 1] != port->context_id)
<4>[ 69.992889] ------------[ cut here ]------------
<2>[ 69.992892] kernel BUG at drivers/gpu/drm/i915/intel_lrc.c:869!
<4>[ 69.992917] invalid opcode: 0000 [#1] PREEMPT SMP PTI
...
ftrace
...
<4>[ 69.431753] Modules linked in: snd_hda_codec_hdmi snd_hda_codec_realtek
snd_hda_codec_generic i915 x86_pkg_temp_thermal intel_powerclamp coretemp
snd_hda_intel crct10dif_pclmul snd_hda_codec crc32_pclmul snd_hwdep
snd_hda_core ghash_clmulni_intel e1000e snd_pcm mei_me ptp mei pps_core
prime_numbers
<4>[ 69.431796] CPU: 0 PID: 1503 Comm: gem_exec_captur Tainted: G U W
4.15.0-CI-CI_DRM_3717+ #1
<4>[ 69.431806] Hardware name: /NUC7i5BNB, BIOS
BNKBL357.86A.0054.2017.1025.1822 10/25/2017
<4>[ 69.431837] RIP: 0010:execlists_submission_tasklet+0x471/0xde0 [i915]
<4>[ 69.431844] RSP: 0018:ffff88027ec03ea8 EFLAGS: 00010296
<4>[ 69.431851] RAX: 0000000000000031 RBX: 0000000000000018 RCX:
0000000000000102
<4>[ 69.431859] RDX: 0000000000000102 RSI: ffffffff8211476f RDI:
00000000ffffffff
<4>[ 69.431867] RBP: ffff88027ec03f20 R08: ffff8802695c0940 R09:
00000000f389b231
<4>[ 69.431874] R10: 000000000000000c R11: 0000000000000000 R12:
ffff880269a57040
<4>[ 69.431882] R13: ffff88026a090010 R14: ffff880269a5704c R15:
ffff88026a090008
<4>[ 69.431890] FS: 00007f2ede1ae8c0(0000) GS:ffff88027ec00000(0000)
knlGS:0000000000000000
<4>[ 69.431899] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4>[ 69.431906] CR2: 0000563cac5275b0 CR3: 0000000269f9c002 CR4:
00000000003606f0
<4>[ 69.431914] Call Trace:
<4>[ 69.431918] <IRQ>
<4>[ 69.431928] tasklet_hi_action+0x89/0x110
<4>[ 69.431935] __do_softirq+0xc1/0x4aa
<4>[ 69.431943] irq_exit+0xa4/0xb0
<4>[ 69.431948] do_IRQ+0x67/0x120
<4>[ 69.431954] common_interrupt+0x9f/0x9f
<4>[ 69.431960] </IRQ>
<4>[ 69.431964] RIP: 0010:_raw_spin_unlock_irqrestore+0x4e/0x60
<4>[ 69.431971] RSP: 0018:ffffc900009afb58 EFLAGS: 00000246 ORIG_RAX:
ffffffffffffffd6
<4>[ 69.431980] RAX: ffff8802695c0040 RBX: 0000000000000246 RCX:
0000000000000006
<4>[ 69.431988] RDX: 00000000000013ba RSI: ffffffff821087d9 RDI:
ffffffff820b9aa6
<4>[ 69.431996] RBP: ffff88025ff26050 R08: ffff8802695c0940 R09:
00000000f389b231
<4>[ 69.432003] R10: 0000000000000000 R11: 0000000000000000 R12:
ffffffffa0284d40
<4>[ 69.432011] R13: ffff880268eea228 R14: ffff88026ab32558 R15:
ffff880268eea228
<4>[ 69.432024] __irq_put_desc_unlock+0x13/0x40
<4>[ 69.432030] enable_irq+0x42/0x60
<4>[ 69.432055] i915_reset+0xcd/0x270 [i915]
<4>[ 69.432080] i915_reset_device+0x1cb/0x230 [i915]
<4>[ 69.432106] ? gen8_gt_irq_ack+0x160/0x160 [i915]
<4>[ 69.432115] ? work_on_cpu_safe+0x50/0x50
<4>[ 69.432141] i915_handle_error+0x2d3/0x430 [i915]
<4>[ 69.432152] ? __might_fault+0x39/0x90
<4>[ 69.432158] ? __might_fault+0x39/0x90
<4>[ 69.432186] i915_wedged_set+0x79/0xc0 [i915]
<4>[ 69.432193] simple_attr_write+0xab/0xc0
<4>[ 69.432200] full_proxy_write+0x4b/0x70
<4>[ 69.432207] __vfs_write+0x1e/0x130
<4>[ 69.432213] ? rcu_read_lock_sched_held+0x6f/0x80
<4>[ 69.432220] ? rcu_sync_lockdep_assert+0x25/0x50
<4>[ 69.432226] ? __sb_start_write+0xd9/0x1f0
<4>[ 69.432232] ? __sb_start_write+0xf3/0x1f0
<4>[ 69.432238] vfs_write+0xbd/0x1b0
<4>[ 69.432244] SyS_write+0x40/0xa0
<4>[ 69.432251] entry_SYSCALL_64_fastpath+0x22/0x8f
<4>[ 69.432257] RIP: 0033:0x7f2edc994670
<4>[ 69.432262] RSP: 002b:00007fff734c5cc8 EFLAGS: 00000246
<4>[ 69.432266] Code: fd ff ff 48 c7 c6 20 6c 2a a0 48 c7 c7 cb b0 28 a0 e8
09 ba f2 e0 0f 0b 48 c7 c6 48 6c 2a a0 48 c7 c7 cb b0 28 a0 e8 f4 b9 f2 e0 <0f>
0b 49 8d 9e 60 15 00 00 4c 89 5d b0 48 89 df e8 1a 01 70 e1
<1>[ 69.432359] RIP: execlists_submission_tasklet+0x471/0xde0 [i915] RSP:
ffff88027ec03ea8
<4>[ 69.432386] ---[ end trace 168600b65ef640ff ]---</pre>
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