[Bug 75502] [SNB, IVB libva+rc6] Page flips hang indefinitely, apparently waiting for mmio writes that never happen

Thu May 1 03:51:57 PDT 2014

https://bugs.freedesktop.org/show_bug.cgi?id=75502

--- Comment #36 from Simon Farnsworth <simon at farnz.org.uk> ---
With all the patches from this bug, on top of
http://koji.fedoraproject.org/koji/buildinfo?buildID=512172
(kernel-3.14.1-200.fc20), and RC6 disabled, my QA team get complete system
hangs. We did not manage to extract the error state, so this may not be
interesting, but syslog shows the following when it goes wrong:

2014-04-30T17:23:22.611582+01:00 kernel[-] info:[drm] stuck on bsd ring
2014-04-30T17:23:22.616207+01:00 kernel[-] info:[drm] stuck on blitter ring
2014-04-30T17:23:22.616232+01:00 kernel[-] info:[drm] GPU crash dump saved to
/sys/class/drm/card0/error
2014-04-30T17:23:22.616253+01:00 kernel[-] info:[drm] GPU hangs can indicate a
bug anywhere in the entire gfx stack, including userspace.
2014-04-30T17:23:22.616273+01:00 kernel[-] info:[drm] Please file a _new_ bug
report on bugs.freedesktop.org against DRI -> DRM/Intel
2014-04-30T17:23:22.616303+01:00 kernel[-] info:[drm] drm/i915 developers can
then reassign to the right component if it's not a kernel issue.
2014-04-30T17:23:22.616323+01:00 kernel[-] info:[drm] The gpu crash dump is
required to analyze gpu hangs, so please always attach it.
2014-04-30T17:27:38.606633+01:00 kernel[-] info:[drm] stuck on bsd ring
2014-04-30T17:27:38.606733+01:00 kernel[-] info:[drm] stuck on blitter ring
2014-04-30T18:02:45.611611+01:00 kernel[-] info:[drm] stuck on bsd ring
2014-04-30T18:02:45.611713+01:00 kernel[-] info:[drm] stuck on blitter ring
2014-04-30T18:02:49.610836+01:00 kernel[-] err:[drm:i915_hangcheck_elapsed]
*ERROR* Hangcheck timer elapsed... render ring idle
2014-04-30T18:05:26.612171+01:00 kernel[-] info:[drm] stuck on bsd ring
2014-04-30T18:05:26.612270+01:00 kernel[-] info:[drm] stuck on blitter ring
2014-04-30T18:05:26.612311+01:00 kernel[-] warning:------------[ cut here
]------------
2014-04-30T18:05:26.612341+01:00 kernel[-] warning:WARNING: CPU: 0 PID: 3571 at
lib/list_debug.c:59 __list_del_entry+0xa1/0xd0()
2014-04-30T18:05:26.612366+01:00 kernel[-] warning:list_del corruption.
prev->next should be ffff8800c5337cc0, but was ffff8800c52b5cc0
2014-04-30T18:05:26.613666+01:00 kernel[-] warning:Modules linked in: dummy
ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter nf_conntrack_ipv4
nf_defrag_ipv4 ip6_tables xt_conntrack nf_conntrack cfg80211 rfkill w83627ehf
hwmon_vid snd_dummy snd_hda_codec_hdmi snd_hda_codec_realtek
snd_hda_codec_generic iTCO_wdt gpio_ich iTCO_vendor_support
x86_pkg_temp_thermal coretemp kvm_intel snd_hda_intel kvm snd_hda_codec
snd_hwdep snd_seq snd_seq_device crct10dif_pclmul snd_pcm crc32_pclmul
crc32c_intel ghash_clmulni_intel lpc_ich microcode serio_raw mfd_core
hid_multitouch snd_timer e1000e i2c_i801 snd mei_me soundcore shpchp
nuvoton_cir mei rc_core ptp pps_core wmi i915 i2c_algo_bit drm_kms_helper drm
i2c_core video
2014-04-30T18:05:26.613814+01:00 kernel[-] warning:CPU: 0 PID: 3571 Comm:
queue70:src Tainted: G        W    3.14.1-200.90.fc20.x86_64 #1
2014-04-30T18:05:26.613837+01:00 kernel[-] warning:Hardware name: ONELAN
NTB6500/DH61AG, BIOS AGH6110H.86A.0042.2012.0723.1130 07/23/2012
2014-04-30T18:05:26.613856+01:00 kernel[-] warning: 0000000000000000
00000000fda0ea1a ffff8800c5337b50 ffffffff816eeaf2
2014-04-30T18:05:26.613879+01:00 kernel[-] warning: ffff8800c5337b98
ffff8800c5337b88 ffffffff8108a1bd ffff8800c5337ca8
2014-04-30T18:05:26.613899+01:00 kernel[-] warning: ffff8800c5337cc0
ffff880037219990 0000000000000216 ffff880037218000
2014-04-30T18:05:26.613920+01:00 kernel[-] warning:Call Trace:
2014-04-30T18:05:26.613940+01:00 kernel[-] warning: [<ffffffff816eeaf2>]
dump_stack+0x45/0x56
2014-04-30T18:05:26.613970+01:00 kernel[-] warning: [<ffffffff8108a1bd>]
warn_slowpath_common+0x7d/0xa0
2014-04-30T18:05:26.613989+01:00 kernel[-] warning: [<ffffffff8108a23c>]
warn_slowpath_fmt+0x5c/0x80
2014-04-30T18:05:26.614008+01:00 kernel[-] warning: [<ffffffff81095f8b>] ?
lock_timer_base.isra.35+0x2b/0x50
2014-04-30T18:05:26.614029+01:00 kernel[-] warning: [<ffffffff8136d001>]
__list_del_entry+0xa1/0xd0
2014-04-30T18:05:26.614793+01:00 kernel[-] warning: [<ffffffff810d2003>]
finish_wait+0x43/0x70
2014-04-30T18:05:26.614815+01:00 kernel[-] warning: [<ffffffffa00982a9>]
__wait_seqno+0x349/0x4f0 [i915]
2014-04-30T18:05:26.614835+01:00 kernel[-] warning: [<ffffffff810d20e0>] ?
abort_exclusive_wait+0xb0/0xb0
2014-04-30T18:05:26.614856+01:00 kernel[-] warning: [<ffffffffa0097d00>] ?
i915_gem_file_idle_work_handler+0x20/0x20 [i915]
2014-04-30T18:05:26.614876+01:00 kernel[-] warning: [<ffffffffa009a340>] ?
i915_gem_object_set_to_cpu_domain+0x30/0x180 [i915]
2014-04-30T18:05:26.614909+01:00 kernel[-] warning: [<ffffffffa009fc1c>]
i915_gem_set_domain_ioctl+0x16c/0x250 [i915]
2014-04-30T18:05:26.614930+01:00 kernel[-] warning: [<ffffffffa0020bf2>]
drm_ioctl+0x4f2/0x620 [drm]
2014-04-30T18:05:26.614950+01:00 kernel[-] warning: [<ffffffff815c8f97>] ?
SYSC_recvfrom+0x127/0x160
2014-04-30T18:05:26.614969+01:00 kernel[-] warning: [<ffffffff811fcba0>]
do_vfs_ioctl+0x2e0/0x4a0
2014-04-30T18:05:26.614990+01:00 kernel[-] warning: [<ffffffff811fcde1>]
SyS_ioctl+0x81/0xa0
2014-04-30T18:05:26.615009+01:00 kernel[-] warning: [<ffffffff816feea9>]
system_call_fastpath+0x16/0x1b
2014-04-30T18:05:26.615030+01:00 kernel[-] warning:---[ end trace
80b0e927330f14a6 ]---

I'll attach the full kernel messages from that boot.

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