[Bug 90253] New: [SNB]System fails to suspend from second time in "drm_suspend_s3" test

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=90253

            Bug ID: 90253
           Summary: [SNB]System fails to suspend from second time in
                    "drm_suspend_s3" test
           Product: DRI
           Version: unspecified
          Hardware: Other
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: haox.chen at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 115470
  --> https://bugs.freedesktop.org/attachment.cgi?id=115470&action=edit
dmesg

System Environment
--------------------------
Regression: Yes. Good commit: d600654ab94b325f253e267422dcf60302120ea0

Non-working platforms: SandyBridge

Bug detailed description
--------------------------
1.echo mem > /sys/power/state
2.resume the machine
3.repeat the above steps for 5 times
=> The system fail to suspend from second time.

Dmesg shows:
[  101.825551] Call Trace:
[  101.825556]  <IRQ>  [<ffffffff81795847>] ? dump_stack+0x40/0x50
[  101.825559]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
[  101.825561]  [<ffffffff81700aef>] ? dev_watchdog+0x171/0x1d7
[  101.825563]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
[  101.825564]  [<ffffffff81700aef>] ? dev_watchdog+0x171/0x1d7
[  101.825566]  [<ffffffff8170097e>] ? dev_graft_qdisc+0x66/0x66
[  101.825568]  [<ffffffff8107bbff>] ? call_timer_fn+0x30/0xd0
[  101.825570]  [<ffffffff8170097e>] ? dev_graft_qdisc+0x66/0x66
[  101.825571]  [<ffffffff8107c39d>] ? run_timer_softirq+0x1c0/0x21b
[  101.825574]  [<ffffffff81087bb4>] ? tick_sched_timer+0x2f/0x55
[  101.825576]  [<ffffffff8103e9d9>] ? __do_softirq+0xd6/0x22d
[  101.825577]  [<ffffffff8103ec64>] ? irq_exit+0x34/0x78
[  101.825580]  [<ffffffff81026bb6>] ? smp_apic_timer_interrupt+0x39/0x43
[  101.825582]  [<ffffffff8179beea>] ? apic_timer_interrupt+0x6a/0x70
[  101.825585]  <EOI>  [<ffffffff816af580>] ? ladder_select_state+0x161/0x161
[  101.825586]  [<ffffffff816af580>] ? ladder_select_state+0x161/0x161
[  101.825589]  [<ffffffff8106541e>] ? cpu_startup_entry+0x262/0x350
[  101.825591] ---[ end trace 8f778530c6e3a543 ]---
[  101.833536] [drm] stuck on render ring
[  101.833919] [drm] GPU HANG: ecode 6:0:0x00d3ffe0, reason: Ring hung, action:
reset
[  101.833941] [drm:i915_reset_and_wakeup] resetting chip
[  101.833963] i915 0000:00:02.0: GEM idle failed, resume might fail
[  101.833975] pci_pm_suspend(): i915_pm_suspend+0x0/0x3f [i915] returns -11
[  101.833978] dpm_run_callback(): pci_pm_suspend+0x0/0xf6 returns -11
[  101.833981] PM: Device 0000:00:02.0 failed to suspend async: error -11
[  101.834020] PM: Some devices failed to suspend, or early wake event detected
[  101.834197] rtc_cmos 00:02: System wakeup disabled by ACPI
[  101.834779] serial 00:04: activated
[  101.835979] drm/i915: Resetting chip after gpu hang
[  101.855657] sd 0:0:0:0: [sda] Starting disk
[  101.858584] tpm_tis 00:05: TPM is disabled/deactivated (0x7)
[  101.994590] PM: resume of devices complete after 160.383 msecs
[  102.029304] PM: Finishing wakeup.
[  102.029305] Restarting tasks ... done.
----------------------------------------------------------

==Reproduce steps==
----------------------------
1.echo mem > /sys/power/state
2.resume the machine
3.repeat step 1-2 5 times.
Result:
The system fail to suspend from second time.

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