<html>
    <head>
      <base href="https://bugs.freedesktop.org/">
    </head>
    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - workqueue: PF_MEMALLOC task 980(kswapd0) is flushing !WQ_MEM_RECLAIM events:gen6_pm_rps_work"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=112187">112187</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>workqueue: PF_MEMALLOC task 980(kswapd0) is flushing !WQ_MEM_RECLAIM events:gen6_pm_rps_work
          </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>not set
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>not set
          </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>jtool4@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=145853" name="attach_145853" title="output of /sys/class/drm/card0/error">attachment 145853</a> <a href="attachment.cgi?id=145853&action=edit" title="output of /sys/class/drm/card0/error">[details]</a></span>
output of /sys/class/drm/card0/error

[1040709.972098] workqueue: PF_MEMALLOC task 980(kswapd0) is flushing
!WQ_MEM_RECLAIM events:gen6_pm_rps_work
[1040709.972102] WARNING: CPU: 2 PID: 980 at kernel/workqueue.c:2598
check_flush_dependency+0xa1/0x130
[1040709.972103] Modules linked in: br_netfilter vboxpci(O) vboxnetflt(O)
vboxnetadp(O) vboxdrv(O) e1000 e1000e efivarfs
[1040709.972108] CPU: 2 PID: 980 Comm: kswapd0 Tainted: G           O    T
5.3.1-gentoo #2
[1040709.972109] Hardware name: HP HP ProDesk 600 G2 SFF/805D, BIOS N02 Ver.
02.28 01/30/2018
[1040709.972110] RIP: 0010:check_flush_dependency+0xa1/0x130
[1040709.972112] Code: 8d 8a 68 05 00 00 48 8d 8b b0 00 00 00 49 89 e8 4c 89 ca
48 c7 c7 f0 ca 56 b8 48 89 04 24 c6 05 ba ce 89 01 01 e8 8a 0e fe ff <0f> 0b 48
8b 04 24 eb 13 4c 89 e7 e8 2f 5c 00 00 41 f6 84 24 01 03
[1040709.972112] RSP: 0000:ffffa27cc1a3b8e8 EFLAGS: 00010082
[1040709.972113] RAX: 0000000000000000 RBX: ffff8cd35d814600 RCX:
0000000000000000
[1040709.972114] RDX: 000000000000005c RSI: ffffffffb8ee865c RDI:
ffffffffb8ee8a5c
[1040709.972114] RBP: ffffffffb75a1220 R08: 0003b2852c337c73 R09:
000000000000005c
[1040709.972115] R10: 0000000000000000 R11: 00000000fffffffe R12:
ffff8cd35d30c9c0
[1040709.972115] R13: ffff8cd35f62c400 R14: 0000000000000001 R15:
ffff8cd35c015e18
[1040709.972116] FS:  0000000000000000(0000) GS:ffff8cd35f700000(0000)
knlGS:0000000000000000
[1040709.972117] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[1040709.972117] CR2: 00007f614e20d000 CR3: 00000001fe57c006 CR4:
00000000003606e0
[1040709.972118] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[1040709.972119] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
0000000000000400
[1040709.972119] Call Trace:
[1040709.972122]  __flush_work+0x8d/0x1b0
[1040709.972124]  ? enqueue_hrtimer+0x34/0x90
[1040709.972126]  ? hrtimer_start_range_ns+0x18c/0x2c0
[1040709.972127]  __cancel_work_timer+0xfb/0x180
[1040709.972129]  ? _cond_resched+0x10/0x20
[1040709.972131]  ? synchronize_irq+0x35/0xa0
[1040709.972132]  ? fwtable_write32+0x19b/0x210
[1040709.972134]  gen6_disable_rps_interrupts+0x74/0x90
[1040709.972136]  gen6_rps_idle+0x15/0xd0
[1040709.972137]  intel_gt_park+0x4f/0x60
[1040709.972139]  __intel_wakeref_put_last+0x12/0x40
[1040709.972140]  __engine_park+0xb6/0xc0
[1040709.972141]  __intel_wakeref_put_last+0x12/0x40
[1040709.972143]  i915_request_retire+0x172/0x310
[1040709.972145]  ring_retire_requests+0x49/0x50
[1040709.972147]  i915_retire_requests+0x3e/0x7a
[1040709.972149]  i915_gem_shrink+0xc6/0x4c0
[1040709.972151]  i915_gem_shrinker_scan+0x5e/0x110
[1040709.972153]  do_shrink_slab+0x152/0x2c0
[1040709.972155]  ? check_preempt_wakeup+0x13b/0x1a0
[1040709.972156]  shrink_slab+0xa7/0x2a0
[1040709.972158]  ? __switch_to_asm+0x40/0x70
[1040709.972160]  shrink_node+0xf2/0x4a0
[1040709.972162]  balance_pgdat+0x2ef/0x530
[1040709.972164]  kswapd+0x1e6/0x3b0
[1040709.972166]  ? wait_woken+0x80/0x80
[1040709.972168]  kthread+0xf6/0x130
[1040709.972170]  ? balance_pgdat+0x530/0x530
[1040709.972171]  ? kthread_park+0x80/0x80
[1040709.972172]  ret_from_fork+0x35/0x40
[1040709.972174] ---[ end trace 8da9ff088715157c ]---
[1142896.363180] traps: code[15394] trap invalid opcode ip:5565821a503d
sp:7ffe75d26628 error:0 in code[55657ebee000+4c03000]
[1239024.357824] chrome (4156) used greatest stack depth: 9912 bytes left
[1412473.940162] i915 0000:00:02.0: GPU HANG: ecode 9:0:0x00000000, hang on
rcs0
[1412473.940164] [drm] GPU hangs can indicate a bug anywhere in the entire gfx
stack, including userspace.
[1412473.940165] [drm] Please file a _new_ bug report on bugs.freedesktop.org
against DRI -> DRM/Intel
[1412473.940166] [drm] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.
[1412473.940167] [drm] The gpu crash dump is required to analyze gpu hangs, so
please always attach it.
[1412473.940168] [drm] GPU crash dump saved to /sys/class/drm/card0/error
[1412473.941183] i915 0000:00:02.0: Resetting rcs0 for hang on rcs0
[1471914.416089] udevd[23065]: starting version 3.2.9
[1471914.428302] udevd[23065]: starting eudev-3.2.9</pre>
        </div>
      </p>


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