[Bug 81732] New: [BSW Regression]igt/gem_persistent_relocs/forked-interruptible-faulting-reloc causes system hang

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=81732

          Priority: high
            Bug ID: 81732
          Keywords: bisect_pending
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [BSW
                    Regression]igt/gem_persistent_relocs/forked-interrupti
                    ble-faulting-reloc causes system hang
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: jinxianx.guo at intel.com
          Hardware: Other
            Status: NEW
           Version: unspecified
         Component: DRM/Intel
           Product: DRI

Created attachment 103425
  --> https://bugs.freedesktop.org/attachment.cgi?id=103425&action=edit
dmesg on fixes branch

==System Environment==
--------------------------
Regression: Yes

Good commit on -next-queued: 91565c85b66db820f01894a971d39aaef60c4325

Non-working platforms: BSW

==kernel==
--------------------------
origin/drm-intel-nightly: 089bea2664988de48fccc81407ebe12115156731(fails)
    drm-intel-nightly: 2014y-07m-24d-09h-55m-38s integration manifest
origin/drm-intel-next-queued: 2b8ee5710915a244b807fbe3427299d007d19e89(works)
    drm/i915: Allow overlapping userptr objects  
origin/drm-intel-fixes: eedd10f45bdcb2a5b2afa35f845e080c3bc984f2(CallTrace
while running the test, please check attachment)
    drm/i915: Simplify i915_gem_release_all_mmaps()

==Bug detailed description==
-----------------------------
igt/gem_persistent_relocs/forked-interruptible-faulting-reloc causes system
hang
Unable get dmesg because system hang.

Output:
[root at x-bsw01 tests]# ./gem_persistent_relocs --run-subtest
forked-interruptible-faulting-reloc
IGT-Version: 1.7-g4d4f4b2 (x86_64) (Linux:
3.16.0-rc6_drm-intel-nightly_089bea_20140725_debug+ x86_64)


Dmesg shows on -fixes branch:
[   72.374279] WARNING: CPU: 1 PID: 3800 at
drivers/gpu/drm/i915/intel_uncore.c:132 gen6_gt_check_fifodbg.isra.12+0x38/0x47
[i915]()
[   72.380584] GT wake FIFO error 0x1080000
[   72.386839] Modules linked in: dm_mod snd_hda_codec_hdmi
snd_hda_codec_realtek snd_hda_codec_generic pcspkr serio_raw snd_hda_intel
snd_hda_controller snd_hda_codec snd_hwdep r8169 snd_pcm snd_timer snd
soundcore battery ac i915 button video drm_kms_helper drm option usb_wwan
usbserial
[   72.400570] CPU: 1 PID: 3800 Comm: gem_persistent_ Tainted: G        W    
3.16.0-rc6_drm-intel-fixes_eedd10_20140725_debug+ #798
[   72.407573]  0000000000000009 ffff88007508f9c8 ffffffff8182f9df
0000000000000046
[   72.414614]  ffff88007508fa18 ffff88007508fa08 ffffffff8103fa1c
0000000000000000
[   72.421614]  ffffffffa01213d1 0000000001080000 ffff880002c50078
00000000049980c8
[   72.428590] Call Trace:
[   72.435480]  [<ffffffff8182f9df>] dump_stack+0x46/0x58
[   72.442412]  [<ffffffff8103fa1c>] warn_slowpath_common+0x81/0x9b
[   72.449388]  [<ffffffffa01213d1>] ? gen6_gt_check_fifodbg.isra.12+0x38/0x47
[i915]
[   72.456381]  [<ffffffff8103fad9>] warn_slowpath_fmt+0x46/0x48
[   72.463402]  [<ffffffffa011f597>] ? __gen6_gt_wait_for_thread_c0+0x3a/0x95
[i915]
[   72.470470]  [<ffffffffa01213d1>] gen6_gt_check_fifodbg.isra.12+0x38/0x47
[i915]
[   72.477555]  [<ffffffffa0121480>] __vlv_force_wake_put+0x3c/0x3e [i915]
[   72.484636]  [<ffffffffa0120d2c>] gen6_read32+0x78/0xeb [i915]
[   72.491700]  [<ffffffffa011b29d>] gen6_ring_get_seqno+0x2c/0x3a [i915]
[   72.498760]  [<ffffffffa01053a5>] __wait_seqno+0x252/0x458 [i915]
[   72.505770]  [<ffffffff8107754d>] ? __init_waitqueue_head+0x50/0x50
[   72.512825]  [<ffffffffa0105dd8>] i915_wait_seqno+0x6f/0x78 [i915]
[   72.519867]  [<ffffffffa0105e15>] i915_gem_object_wait_rendering+0x34/0x4f
[i915]
[   72.526926]  [<ffffffffa010aff8>]
i915_gem_object_set_to_gtt_domain+0x54/0x181 [i915]
[   72.533986]  [<ffffffffa010b6b1>] i915_gem_pwrite_ioctl+0x261/0x7f8 [i915]
[   72.540995]  [<ffffffff811139f4>] ? might_fault+0x43/0x93
[   72.548024]  [<ffffffffa007423f>] drm_ioctl+0x2bd/0x425 [drm]
[   72.555092]  [<ffffffffa010b450>] ? i915_gem_set_domain_ioctl+0xf6/0xf6
[i915]
[   72.562182]  [<ffffffff810bf0b1>] ? __audit_syscall_exit+0x1f4/0x213
[   72.569273]  [<ffffffff8114b525>] do_vfs_ioctl+0x455/0x49f
[   72.576325]  [<ffffffff81097ccf>] ? current_kernel_time+0x64/0xa0
[   72.583408]  [<ffffffff81080d2d>] ? trace_hardirqs_on_caller+0x142/0x19e
[   72.590379]  [<ffffffff81080d96>] ? trace_hardirqs_on+0xd/0xf
[   72.597195]  [<ffffffff8114b5c2>] SyS_ioctl+0x53/0x81
[   72.603734]  [<ffffffff81837112>] system_call_fastpath+0x16/0x1b


Reproduce steps:
-------------------------
1. ./gem_persistent_relocs --run-subtest forked-interruptible-faulting-reloc

-- 
You are receiving this mail because:
You are the QA Contact for the bug.
You are on the CC list for the bug.
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/intel-gfx-bugs/attachments/20140725/589eafa3/attachment.html>