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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 - WARNING: CPU: 1 PID: 1630 at drivers/gpu/drm/i915/intel_uncore.c:224 __gen6_gt_wait_for_fifo+0xb5/0xc0 [i915]"
href="https://bugs.freedesktop.org/show_bug.cgi?id=102426">102426</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>WARNING: CPU: 1 PID: 1630 at drivers/gpu/drm/i915/intel_uncore.c:224 __gen6_gt_wait_for_fifo+0xb5/0xc0 [i915]
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr>
<tr>
<th>Version</th>
<td>XOrg 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>samuel.rakitnican@gmail.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>Created <span class=""><a href="attachment.cgi?id=133811" name="attach_133811" title="Full log from journalctl at the time it happens">attachment 133811</a> <a href="attachment.cgi?id=133811&action=edit" title="Full log from journalctl at the time it happens">[details]</a></span>
Full log from journalctl at the time it happens
Happens when user is logged in and using the DE.
Kernel: 4.11.4-1.el7.elrepo.x86_64
OS: CentOS 7
CPU: i3-2100
Aug 25 16:25:16 hostname kernel: WARNING: CPU: 1 PID: 1630 at
drivers/gpu/drm/i915/intel_uncore.c:224 __gen6_gt_wait_for_fifo+0xb5/0xc0
[i915]
Aug 25 16:25:16 hostname kernel: WARN_ON(loop < 0 && fifo <= 20)
Aug 25 16:25:16 hostname kernel: Modules linked in: nls_utf8 isofs fuse usblp
rpcsec_gss_krb5 xt_set xt_multiport xt_CHECKSUM ipt_MASQUERADE
nf_nat_masquerade_ipv4 tun ip_set_hash_ip nf_conntrack_netbios_ns
nf_conntrack_broadcast ip6t_rpfilter ipt_REJECT nf_reject_ipv4 ip6t_REJECT
nf_reject_ipv6 xt_conntrack ip_set nfnetlink ebtable_nat ebtable_broute
ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle
ip6table_security ip6table_raw iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4
nf_nat_ipv4 nf_nat nf_conntrack libcrc32c iptable_mangle iptable_security
iptable_raw ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter
dm_mirror dm_region_hash dm_log dm_mod vfat fat rc_hauppauge ir_kbd_i2c
x86_pkg_temp_thermal intel_powerclamp tuner_simple tuner_types coretemp
kvm_intel kvm irqbypass tuner
Aug 25 16:25:16 hostname kernel: crct10dif_pclmul crc32_pclmul tda7432 tvaudio
ghash_clmulni_intel cryptd snd_hda_codec_hdmi intel_cstate msp3400 iTCO_wdt
ppdev iTCO_vendor_support snd_hda_codec_realtek snd_hda_codec_generic
snd_hda_intel intel_rapl_perf snd_hda_codec snd_hda_core snd_bt87x snd_hwdep
snd_seq snd_seq_device bttv snd_pcm tea575x tveeprom videobuf_dma_sg
videobuf_core pcspkr v4l2_common snd_timer input_leds videodev i2c_i801
parport_pc nuvoton_cir sg mei_me snd parport soundcore rc_core mei shpchp
lpc_ich mfd_core nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables ext4
jbd2 mbcache sr_mod cdrom sd_mod i915 ahci libahci video i2c_algo_bit serio_raw
drm_kms_helper syscopyarea sysfillrect r8169 sysimgblt fb_sys_fops libata mii
crc32c_intel drm floppy
Aug 25 16:25:16 hostname kernel: CPU: 1 PID: 1630 Comm: Xorg Not tainted
4.11.4-1.el7.elrepo.x86_64 #1
Aug 25 16:25:16 hostname kernel: Hardware name: To Be Filled By O.E.M. To Be
Filled By O.E.M./H67M, BIOS P1.40 02/18/2011
Aug 25 16:25:16 hostname kernel: Call Trace:
Aug 25 16:25:16 hostname kernel: dump_stack+0x63/0x87
Aug 25 16:25:16 hostname kernel: __warn+0xd1/0xf0
Aug 25 16:25:16 hostname kernel: warn_slowpath_fmt+0x5f/0x80
Aug 25 16:25:16 hostname kernel: __gen6_gt_wait_for_fifo+0xb5/0xc0 [i915]
Aug 25 16:25:16 hostname kernel: gen6_write32+0x129/0x180 [i915]
Aug 25 16:25:16 hostname kernel: gen6_irq_disable+0x33/0x50 [i915]
Aug 25 16:25:16 hostname kernel: irq_disable+0x25/0x40 [i915]
Aug 25 16:25:16 hostname kernel: __intel_breadcrumbs_disable_irq+0x3f/0x50
[i915]
Aug 25 16:25:16 hostname kernel: intel_engine_remove_wait+0x1a5/0x1b0 [i915]
Aug 25 16:25:16 hostname kernel: i915_wait_request+0x1ab/0x450 [i915]
Aug 25 16:25:16 hostname kernel: ? remove_wait_queue+0x60/0x60
Aug 25 16:25:16 hostname kernel: i915_gem_object_wait_fence+0x7b/0x170 [i915]
Aug 25 16:25:16 hostname kernel: i915_gem_object_wait_reservation+0x169/0x1d0
[i915]
Aug 25 16:25:16 hostname kernel: i915_gem_set_domain_ioctl+0xa3/0x230 [i915]
Aug 25 16:25:16 hostname kernel: drm_ioctl+0x2b7/0x4c0 [drm]
Aug 25 16:25:16 hostname kernel: ? __set_task_blocked+0x3c/0xa0
Aug 25 16:25:16 hostname kernel: ?
i915_gem_obj_prepare_shmem_write+0x1c0/0x1c0 [i915]
Aug 25 16:25:16 hostname kernel: ? do_signal+0x198/0x6a0
Aug 25 16:25:16 hostname kernel: do_vfs_ioctl+0xa7/0x5f0
Aug 25 16:25:16 hostname kernel: ?
trace_event_raw_event_signal_deliver+0xeb/0x100
Aug 25 16:25:16 hostname kernel: SyS_ioctl+0x79/0x90
Aug 25 16:25:16 hostname kernel: do_syscall_64+0x67/0x180
Aug 25 16:25:16 hostname kernel: entry_SYSCALL64_slow_path+0x25/0x25
Aug 25 16:25:16 hostname kernel: RIP: 0033:0x7fc69f67f537
Aug 25 16:25:16 hostname kernel: RSP: 002b:00007ffd1f760608 EFLAGS: 00003246
ORIG_RAX: 0000000000000010
Aug 25 16:25:16 hostname kernel: RAX: ffffffffffffffda RBX: 00007fc6a1b5f700
RCX: 00007fc69f67f537
Aug 25 16:25:16 hostname kernel: RDX: 00007ffd1f760640 RSI: 00000000400c645f
RDI: 0000000000000009
Aug 25 16:25:16 hostname kernel: RBP: 00007ffd1f760640 R08: 000000000000000c
R09: 00000000ffffffff
Aug 25 16:25:16 hostname kernel: R10: 0000000000000000 R11: 0000000000003246
R12: 00000000400c645f
Aug 25 16:25:16 hostname kernel: R13: 0000000000000009 R14: 0000563feb6b41a0
R15: 0000563feb6b04c0
See also: <a class="bz_bug_link
bz_status_CLOSED bz_closed"
title="CLOSED FIXED - [snb 3.5] stale semaphore sync seqno (typically as seen on bcs->rcs)"
href="show_bug.cgi?id=54226">bug #54226</a></pre>
</div>
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