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<b><a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - [CI] igt@* - dmesg-warn - WARNING: CPU: 3 PID: 38 at sound/hda/hdac_i915.c:92 snd_hdac_display_power+0xd3/0xf0 [snd_hda_core] -> WARN_ON(!bus->i915_power_refcount)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=104238#c9">Comment # 9</a>
on <a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - [CI] igt@* - dmesg-warn - WARNING: CPU: 3 PID: 38 at sound/hda/hdac_i915.c:92 snd_hdac_display_power+0xd3/0xf0 [snd_hda_core] -> WARN_ON(!bus->i915_power_refcount)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=104238">bug 104238</a>
from <span class="vcard"><a class="email" href="mailto:martin.peres@free.fr" title="Martin Peres <martin.peres@free.fr>"> <span class="fn">Martin Peres</span></a>
</span></b>
<pre><a href="https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_28/fi-skl-6700k2/igt@drv_module_reload@basic-no-display.html">https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_28/fi-skl-6700k2/igt@drv_module_reload@basic-no-display.html</a>
[ 35.301772] WARNING: CPU: 5 PID: 1395 at sound/hda/hdac_i915.c:92
snd_hdac_display_power+0xdc/0x100 [snd_hda_core]
[ 35.301794] Modules linked in: snd_hda_codec_hdmi snd_hda_codec_realtek
snd_hda_codec_generic i915 x86_pkg_temp_thermal intel_powerclamp coretemp
crct10dif_pclmul crc32_pclmul snd_hda_intel ghash_clmulni_intel snd_hda_codec
snd_hwdep snd_hda_core snd_pcm mei_me e1000e mei prime_numbers
[ 35.301834] CPU: 5 PID: 1395 Comm: drv_module_relo Tainted: G U
4.17.0-rc3-g1d2a421b1f9b-drmtip_28+ #1
[ 35.301836] Hardware name: System manufacturer System Product Name/Z170 PRO
GAMING, BIOS 0802 09/02/2015
[ 35.301841] RIP: 0010:snd_hdac_display_power+0xdc/0x100 [snd_hda_core]
[ 35.301844] RSP: 0018:ffffb54c80773c70 EFLAGS: 00010246
[ 35.301847] RAX: 00000000ffffffff RBX: ffff907a854f33f8 RCX:
dead000000000200
[ 35.301850] RDX: ffff907a854f01a8 RSI: 0000000000000000 RDI:
ffff907a854f33f8
[ 35.301852] RBP: 0000000000000000 R08: 0000000000000000 R09:
0000000000000000
[ 35.301854] R10: 0000000000000000 R11: 0000000000000000 R12:
0000000000000000
[ 35.301856] R13: ffff907a7fc867d8 R14: 0000000000000060 R15:
ffff907a8608a148
[ 35.301859] FS: 00007fadb5dbf980(0000) GS:ffff907a95d40000(0000)
knlGS:0000000000000000
[ 35.301861] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 35.301863] CR2: 000055eb537db018 CR3: 00000002402ee004 CR4:
00000000003606e0
[ 35.301865] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[ 35.301868] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
0000000000000400
[ 35.301869] Call Trace:
[ 35.301879] snd_hda_codec_dev_free+0x1e/0x30 [snd_hda_codec]
[ 35.301884] __snd_device_free+0x4c/0x80
[ 35.301888] snd_device_free_all+0x26/0x40
[ 35.301892] release_card_device+0x14/0x70
[ 35.301896] device_release+0x2b/0x80
[ 35.301901] kobject_put+0x85/0x1a0
[ 35.301906] snd_card_free+0x60/0x90
[ 35.301915] pci_device_remove+0x36/0xb0
[ 35.301920] device_release_driver_internal+0x15d/0x220
[ 35.301926] unbind_store+0x7f/0x150
[ 35.301932] kernfs_fop_write+0x104/0x190
[ 35.301938] __vfs_write+0x31/0x160
[ 35.301943] ? rcu_read_lock_sched_held+0x6f/0x80
[ 35.301946] ? rcu_sync_lockdep_assert+0x29/0x50
[ 35.301949] ? __sb_start_write+0x152/0x1f0
[ 35.301952] ? __sb_start_write+0x168/0x1f0
[ 35.301958] vfs_write+0xbd/0x1a0
[ 35.301963] ksys_write+0x50/0xc0
[ 35.301969] do_syscall_64+0x55/0x190
[ 35.301973] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 35.301976] RIP: 0033:0x7fadb575f281
[ 35.301978] RSP: 002b:00007ffee7dc99c8 EFLAGS: 00000246 ORIG_RAX:
0000000000000001
[ 35.301983] RAX: ffffffffffffffda RBX: 0000000000000000 RCX:
00007fadb575f281
[ 35.301985] RDX: 000000000000000c RSI: 000055eb537d08db RDI:
0000000000000003
[ 35.301987] RBP: 00007ffee7dcaab0 R08: 000055eb537d08db R09:
000000000000000c
[ 35.301989] R10: 00000000fffffff4 R11: 0000000000000246 R12:
000055eb5359c2f0
[ 35.301991] R13: 00007ffee7dcac70 R14: 0000000000000000 R15:
0000000000000000
[ 35.302003] Code: 7d 00 48 8b 40 08 e8 a4 ce 80 f0 be 01 00 00 00 48 89 df
e8 a7 fe ff ff 31 f6 48 89 df e8 9d fe ff ff 5b 89 e8 5d 41 5c 41 5d c3 <0f> 0b
c7 83 50 05 00 00 ff ff ff ff eb e9 bd ed ff ff ff eb e2
[ 35.302121] irq event stamp: 88428
[ 35.302125] hardirqs last enabled at (88427): [<ffffffffb01fb012>]
__slab_free+0x472/0x580
[ 35.302128] hardirqs last disabled at (88428): [<ffffffffb0a0111c>]
error_entry+0x7c/0x100
[ 35.302131] softirqs last enabled at (86790): [<ffffffffb0c0032b>]
__do_softirq+0x32b/0x4e1
[ 35.302134] softirqs last disabled at (86769): [<ffffffffb008f6c4>]
irq_exit+0xa4/0xb0
[ 35.302139] WARNING: CPU: 5 PID: 1395 at sound/hda/hdac_i915.c:92
snd_hdac_display_power+0xdc/0x100 [snd_hda_core]
[ 35.302141] ---[ end trace 7cff2719f2d0c32f ]---
[ 35.309597] WARNING: CPU: 5 PID: 1395 at sound/hda/hdac_i915.c:429
snd_hdac_i915_exit+0x54/0x80 [snd_hda_core]
[ 35.309599] Modules linked in: snd_hda_codec_hdmi snd_hda_codec_realtek
snd_hda_codec_generic i915 x86_pkg_temp_thermal intel_powerclamp coretemp
crct10dif_pclmul crc32_pclmul snd_hda_intel ghash_clmulni_intel snd_hda_codec
snd_hwdep snd_hda_core snd_pcm mei_me e1000e mei prime_numbers
[ 35.309625] CPU: 5 PID: 1395 Comm: drv_module_relo Tainted: G U W
4.17.0-rc3-g1d2a421b1f9b-drmtip_28+ #1
[ 35.309627] Hardware name: System manufacturer System Product Name/Z170 PRO
GAMING, BIOS 0802 09/02/2015
[ 35.309630] RIP: 0010:snd_hdac_i915_exit+0x54/0x80 [snd_hda_core]
[ 35.309632] RSP: 0018:ffffb54c80773c70 EFLAGS: 00010286
[ 35.309634] RAX: 00000000ffffffff RBX: ffff907a854f33f8 RCX:
87953d5e00000000
[ 35.309636] RDX: 0000000000000000 RSI: 000000009b35c240 RDI:
ffff907a854f33f8
[ 35.309637] RBP: ffff907a7fc867d8 R08: 000000002ae95ca7 R09:
0000000000000001
[ 35.309639] R10: 0000000000000000 R11: ffffffffb12321c0 R12:
ffff907a8ba3b498
[ 35.309640] R13: ffffffffc042e210 R14: 0000000000000060 R15:
ffff907a8608a148
[ 35.309642] FS: 00007fadb5dbf980(0000) GS:ffff907a95d40000(0000)
knlGS:0000000000000000
[ 35.309643] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 35.309645] CR2: 000055eb537db018 CR3: 00000002402ee004 CR4:
00000000003606e0
[ 35.309646] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[ 35.309648] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
0000000000000400
[ 35.309649] Call Trace:
[ 35.309653] azx_free+0x100/0x170 [snd_hda_intel]
[ 35.309657] __snd_device_free+0x4c/0x80
[ 35.309660] snd_device_free_all+0x26/0x40
[ 35.309662] release_card_device+0x14/0x70
[ 35.309665] device_release+0x2b/0x80
[ 35.309669] kobject_put+0x85/0x1a0
[ 35.309672] snd_card_free+0x60/0x90
[ 35.309678] pci_device_remove+0x36/0xb0
[ 35.309681] device_release_driver_internal+0x15d/0x220
[ 35.309685] unbind_store+0x7f/0x150
[ 35.309689] kernfs_fop_write+0x104/0x190
[ 35.309693] __vfs_write+0x31/0x160
[ 35.309698] ? rcu_read_lock_sched_held+0x6f/0x80
[ 35.309699] ? rcu_sync_lockdep_assert+0x29/0x50
[ 35.309702] ? __sb_start_write+0x152/0x1f0
[ 35.309704] ? __sb_start_write+0x168/0x1f0
[ 35.309707] vfs_write+0xbd/0x1a0
[ 35.309710] ksys_write+0x50/0xc0
[ 35.309715] do_syscall_64+0x55/0x190
[ 35.309718] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 35.309720] RIP: 0033:0x7fadb575f281
[ 35.309721] RSP: 002b:00007ffee7dc99c8 EFLAGS: 00000246 ORIG_RAX:
0000000000000001
[ 35.309724] RAX: ffffffffffffffda RBX: 0000000000000000 RCX:
00007fadb575f281
[ 35.309725] RDX: 000000000000000c RSI: 000055eb537d08db RDI:
0000000000000003
[ 35.309727] RBP: 00007ffee7dcaab0 R08: 000055eb537d08db R09:
000000000000000c
[ 35.309728] R10: 00000000fffffff4 R11: 0000000000000246 R12:
000055eb5359c2f0
[ 35.309729] R13: 00007ffee7dcac70 R14: 0000000000000000 R15:
0000000000000000
[ 35.309736] Code: e7 e8 e1 72 22 f0 48 89 ef e8 79 5a e0 ef 48 c7 83 48 05
00 00 00 00 00 00 48 c7 05 e3 9b 00 00 00 00 00 00 5b 31 c0 5d 41 5c c3 <0f> 0b
85 c0 7e c6 48 8b 45 20 48 85 c0 74 bd 48 8b 40 10 48 8b
[ 35.309812] irq event stamp: 102402
[ 35.309815] hardirqs last enabled at (102401): [<ffffffffb01fb012>]
__slab_free+0x472/0x580
[ 35.309817] hardirqs last disabled at (102402): [<ffffffffb0a0111c>]
error_entry+0x7c/0x100
[ 35.309819] softirqs last enabled at (100368): [<ffffffffb0c0032b>]
__do_softirq+0x32b/0x4e1
[ 35.309821] softirqs last disabled at (100353): [<ffffffffb008f6c4>]
irq_exit+0xa4/0xb0
[ 35.309825] WARNING: CPU: 5 PID: 1395 at sound/hda/hdac_i915.c:429
snd_hdac_i915_exit+0x54/0x80 [snd_hda_core]
[ 35.309826] ---[ end trace 7cff2719f2d0c330 ]---</pre>
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