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<body><span class="vcard"><a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> <span class="fn">Chris Wilson</span></a>
</span> changed
<a class="bz_bug_link
bz_status_NEW "
title="NEW - [chv] Unclaimed register detected after reading register 0x1e1110 [PORT_HOTPLUG_EN]"
href="https://bugs.freedesktop.org/show_bug.cgi?id=97798">bug 97798</a>
<br>
<table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
</tr>
<tr>
<td style="text-align:right;">Priority</td>
<td>medium
</td>
<td>highest
</td>
</tr>
<tr>
<td style="text-align:right;">Severity</td>
<td>normal
</td>
<td>blocker
</td>
</tr></table>
<p>
<div>
<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [chv] Unclaimed register detected after reading register 0x1e1110 [PORT_HOTPLUG_EN]"
href="https://bugs.freedesktop.org/show_bug.cgi?id=97798#c2">Comment # 2</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [chv] Unclaimed register detected after reading register 0x1e1110 [PORT_HOTPLUG_EN]"
href="https://bugs.freedesktop.org/show_bug.cgi?id=97798">bug 97798</a>
from <span class="vcard"><a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> <span class="fn">Chris Wilson</span></a>
</span></b>
<pre>Still causing mass slowdown:
[ 4.740136] WARNING: CPU: 1 PID: 221 at
drivers/gpu/drm/i915/intel_uncore.c:795 __unclaimed_reg_debug+0x44/0x50 [i915]
[ 4.740155] Unclaimed read from register 0x1e1110
[ 4.740168] Modules linked in: i915(+) intel_gtt drm_kms_helper
prime_numbers
[ 4.740190] CPU: 1 PID: 221 Comm: systemd-udevd Not tainted 4.10.0-rc6+ #384
[ 4.740203] Hardware name: / , BIOS
PYBSWCEL.86A.0027.2015.0507.1758 05/07/2015
[ 4.740220] Call Trace:
[ 4.740236] dump_stack+0x4d/0x6f
[ 4.740251] __warn+0xc1/0xe0
[ 4.740265] warn_slowpath_fmt+0x4a/0x50
[ 4.740281] ? insert_work+0x77/0xc0
[ 4.740355] ? fwtable_write32+0x90/0x130 [i915]
[ 4.740431] __unclaimed_reg_debug+0x44/0x50 [i915]
[ 4.740507] fwtable_read32+0xd8/0x130 [i915]
[ 4.740575] i915_hpd_irq_setup+0xa5/0x100 [i915]
[ 4.740649] intel_hpd_init+0x68/0x80 [i915]
[ 4.740716] i915_driver_load+0xe19/0x1380 [i915]
[ 4.740784] i915_pci_probe+0x32/0x90 [i915]
[ 4.740799] pci_device_probe+0x8b/0xf0
[ 4.740815] driver_probe_device+0x2b6/0x450
[ 4.740828] __driver_attach+0xda/0xe0
[ 4.740841] ? driver_probe_device+0x450/0x450
[ 4.740853] bus_for_each_dev+0x5b/0x90
[ 4.740865] driver_attach+0x19/0x20
[ 4.740878] bus_add_driver+0x166/0x260
[ 4.740892] driver_register+0x5b/0xd0
[ 4.740906] ? 0xffffffffa0166000
[ 4.740920] __pci_register_driver+0x47/0x50
[ 4.740985] i915_init+0x5c/0x5e [i915]
[ 4.740999] do_one_initcall+0x3e/0x160
[ 4.741015] ? __vunmap+0x7c/0xc0
[ 4.741029] ? kmem_cache_alloc+0xcf/0x120
[ 4.741045] do_init_module+0x55/0x1c4
[ 4.741060] load_module+0x1f3f/0x25b0
[ 4.741073] ? __symbol_put+0x40/0x40
[ 4.741086] ? kernel_read_file+0x100/0x190
[ 4.741100] SYSC_finit_module+0xbc/0xf0
[ 4.741112] SyS_finit_module+0x9/0x10
[ 4.741125] entry_SYSCALL_64_fastpath+0x17/0x98
[ 4.741135] RIP: 0033:0x7f8559a140f9
[ 4.741145] RSP: 002b:00007fff7509a3e8 EFLAGS: 00000246 ORIG_RAX:
0000000000000139
[ 4.741161] RAX: ffffffffffffffda RBX: 00007f855aba02d1 RCX:
00007f8559a140f9
[ 4.741172] RDX: 0000000000000000 RSI: 000055b6db0914f0 RDI:
0000000000000011
[ 4.741183] RBP: 0000000000020000 R08: 0000000000000000 R09:
000000000000000e
[ 4.741193] R10: 0000000000000011 R11: 0000000000000246 R12:
000055b6db0854d0
[ 4.741204] R13: 000055b6db091150 R14: 0000000000000000 R15:
000055b6db035924</pre>
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