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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 - [SKL][BAT] BUG: spinlock already unlocked on CPU#4, gem_exec_parallel"
href="https://bugs.freedesktop.org/show_bug.cgi?id=100051">100051</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>[SKL][BAT] BUG: spinlock already unlocked on CPU#4, gem_exec_parallel
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr>
<tr>
<th>Version</th>
<td>DRI git
</td>
</tr>
<tr>
<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux (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>mika.kuoppala@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>
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<pre>[ 206.922985] BUG: spinlock already unlocked on CPU#4, gem_exec_parall/7796
[ 206.922994] lock: 0xffff8801c6047120, .magic: dead4ead, .owner: <none>/-1,
.owner_cpu: -1
[ 206.923000] CPU: 4 PID: 7796 Comm: gem_exec_parall Not tainted
4.10.0-CI-Patchwork_4008+ #1
[ 206.923006] Hardware name: System manufacturer System Product
Name/Z170M-PLUS, BIOS 1805 06/20/2016
[ 206.923012] Call Trace:
[ 206.923014] <IRQ>
[ 206.923019] dump_stack+0x67/0x92
[ 206.923023] spin_dump+0x73/0xc0
[ 206.923027] do_raw_spin_unlock+0x79/0xb0
[ 206.923031] _raw_spin_unlock_irqrestore+0x27/0x60
[ 206.923042] dma_fence_signal+0x160/0x230
[ 206.923060] notify_ring+0xae/0x2e0 [i915]
[ 206.923073] ? ibx_hpd_irq_handler+0xc0/0xc0 [i915]
[ 206.923086] gen8_gt_irq_handler+0x219/0x290 [i915]
[ 206.923100] gen8_irq_handler+0x8e/0x6b0 [i915]
[ 206.923105] __handle_irq_event_percpu+0x58/0x370
[ 206.923109] handle_irq_event_percpu+0x1e/0x50
[ 206.923113] handle_irq_event+0x34/0x60
[ 206.923117] handle_edge_irq+0xbe/0x150
[ 206.923122] handle_irq+0x15/0x20
[ 206.923126] do_IRQ+0x63/0x130
[ 206.923142] ? i915_mutex_lock_interruptible+0x39/0x140 [i915]
[ 206.923148] common_interrupt+0x90/0x90
[ 206.923153] RIP: 0010:osq_lock+0x77/0x110
[ 206.923157] RSP: 0018:ffffc90001cabaa0 EFLAGS: 00000246 ORIG_RAX:
ffffffffffffff6e
[ 206.923164] RAX: 0000000000000000 RBX: ffff880236d1abc0 RCX:
ffff8801ef642fc0
[ 206.923169] RDX: ffff8801ef6427c0 RSI: ffffffff81c6e7fd RDI:
ffffffff81c7c848
[ 206.923175] RBP: ffffc90001cabab8 R08: 00000000692bb19b R09:
08c1493200000000
[ 206.923180] R10: 0000000000000001 R11: 0000000000000001 R12:
ffff880236cdabc0
[ 206.923185] R13: ffff8802207f00b0 R14: ffffffffa00b7cd9 R15:
ffff8802207f0070
[ 206.923191] </IRQ>
[ 206.923206] ? i915_mutex_lock_interruptible+0x39/0x140 [i915]
[ 206.923213] __mutex_lock+0x649/0x990
[ 206.923217] ? __mutex_lock+0xb0/0x990
[ 206.923221] ? _raw_spin_unlock+0x2c/0x50
[ 206.923226] ? __pm_runtime_resume+0x56/0x80
[ 206.923242] ? i915_mutex_lock_interruptible+0x39/0x140 [i915]
[ 206.923249] mutex_lock_interruptible_nested+0x16/0x20
[ 206.923264] i915_mutex_lock_interruptible+0x39/0x140 [i915]
[ 206.923270] ? __pm_runtime_resume+0x56/0x80
[ 206.923285] i915_gem_do_execbuffer.isra.15+0x442/0x1d10 [i915]
[ 206.923291] ? __lock_acquire+0x449/0x1b50
[ 206.923296] ? __might_fault+0x3e/0x90
[ 206.923301] ? __might_fault+0x87/0x90
[ 206.923305] ? __might_fault+0x3e/0x90
[ 206.923320] i915_gem_execbuffer2+0xb5/0x220 [i915]
[ 206.923327] drm_ioctl+0x200/0x450
[ 206.923341] ? i915_gem_execbuffer+0x330/0x330 [i915]
[ 206.923348] do_vfs_ioctl+0x90/0x6e0
[ 206.923352] ? __fget+0x108/0x200
[ 206.923356] ? expand_files+0x2b0/0x2b0
[ 206.923361] SyS_ioctl+0x3c/0x70
[ 206.923365] entry_SYSCALL_64_fastpath+0x1c/0xb1
[ 206.923369] RIP: 0033:0x7fdd75fc6357
[ 206.923373] RSP: 002b:00007fdd20e59bf8 EFLAGS: 00000246 ORIG_RAX:
0000000000000010
[ 206.923380] RAX: ffffffffffffffda RBX: ffffffff81481ff3 RCX:
00007fdd75fc6357
[ 206.923385] RDX: 00007fdd20e59c70 RSI: 0000000040406469 RDI:
0000000000000003
[ 206.923390] RBP: ffffc90001cabf88 R08: 0000000000000040 R09:
00000000000003f7
[ 206.923396] R10: 0000000000000000 R11: 0000000000000246 R12:
0000000000000000
[ 206.923401] R13: 0000000000000003 R14: 0000000040406469 R15:
0000000001cf9cb0
[ 206.923408] ? __this_cpu_preempt_check+0x13/0x20
<a href="https://intel-gfx-ci.01.org/CI/Patchwork_4008/fi-skl-6700k/igt@gem_exec_parallel@basic.html">https://intel-gfx-ci.01.org/CI/Patchwork_4008/fi-skl-6700k/igt@gem_exec_parallel@basic.html</a></pre>
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