[Bug 103540] [CI][HSW only] igt@* - Incomplete - timeout/system hang

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=103540

--- Comment #18 from Marta Löfstedt <marta.lofstedt at intel.com> ---
https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_3546/shard-hsw3/igt@gem_eio@in-flight-external.html

<7>[  121.567706] [drm:i915_reset_device [i915]] resetting chip
<5>[  121.567799] i915 0000:00:02.0: Resetting chip after gpu hang
<7>[  121.568746] [drm:sandybridge_pcode_read [i915]] warning: pcode (read from
mbox 5) mailbox access failed for intel_enable_gt_powersave [i915]: -6
<7>[  121.568983] [drm:init_workarounds_ring [i915]] rcs0: Number of context
specific w/a: 0
<14>[  121.570147] [IGT] gem_eio: starting subtest in-flight-external
<4>[  121.571822] Setting dangerous option reset - tainting kernel
<3>[  123.921863] INFO: task kswapd0:80 blocked for more than 60 seconds.
<3>[  123.921887]       Tainted: G     U           4.15.0-rc4-CI-CI_DRM_3546+
#1
<3>[  123.921905] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
this message.
<6>[  123.921926] kswapd0         D    0    80      2 0x80000000
<4>[  123.921931] Call Trace:
<4>[  123.921940]  ? __schedule+0x3c3/0xaf0
<4>[  123.921947]  schedule+0x37/0x90
<4>[  123.921951]  io_schedule+0xd/0x30
<4>[  123.921955]  __lock_page+0x107/0x130
<4>[  123.921960]  ? add_to_page_cache_lru+0xc0/0xc0
<4>[  123.921967]  deferred_split_scan+0x25a/0x2b0
<4>[  123.921975]  shrink_slab.part.17+0x201/0x5d0
<4>[  123.921986]  shrink_node+0x2fd/0x310
<4>[  123.921993]  kswapd+0x31c/0x910
<4>[  123.922004]  kthread+0xfb/0x130
<4>[  123.922007]  ? mem_cgroup_shrink_node+0x300/0x300
<4>[  123.922009]  ? _kthread_create_on_node+0x30/0x30
<4>[  123.922015]  ret_from_fork+0x24/0x30
<4>[  123.922023] 
<4>[  123.922023] Showing all locks held in the system:
<4>[  123.922028] 2 locks held by khungtaskd/67:
<4>[  123.922032]  #0:  (rcu_read_lock){....}, at: [<00000000af589633>]
watchdog+0x9b/0x5e0
<4>[  123.922043]  #1:  (tasklist_lock){.+.+}, at: [<000000004e9aafe9>]
debug_show_all_locks+0x37/0x190
<4>[  123.922056] 1 lock held by kswapd0/80:
<4>[  123.922057]  #0:  (shrinker_rwsem){++++}, at: [<000000002678c2e8>]
shrink_slab.part.17+0x46/0x5d0
<4>[  123.922075] 1 lock held by in:imklog/571:
<4>[  123.922076]  #0:  (&f->f_pos_lock){+.+.}, at: [<00000000044eb2e1>]
__fdget_pos+0x3a/0x50
<4>[  123.922097] 1 lock held by dmesg/1154:
<4>[  123.922099]  #0:  (&user->lock){+.+.}, at: [<00000000b572ad75>]
devkmsg_read+0x35/0x2f0
<4>[  123.922111] 
<4>[  123.922113] =============================================
<4>[  123.922113] 
<4>[  123.922116] NMI backtrace for cpu 0
<4>[  123.922118] CPU: 0 PID: 67 Comm: khungtaskd Tainted: G     U          
4.15.0-rc4-CI-CI_DRM_3546+ #1
<4>[  123.922120] Hardware name: MSI MS-7924/Z97M-G43(MS-7924), BIOS V1.12
02/15/2016
<4>[  123.922122] Call Trace:
<4>[  123.922127]  dump_stack+0x5f/0x86
<4>[  123.922132]  nmi_cpu_backtrace+0xb4/0xc0
<4>[  123.922137]  ? lapic_can_unplug_cpu+0x90/0x90
<4>[  123.922140]  nmi_trigger_cpumask_backtrace+0xb8/0xf0
<4>[  123.922144]  watchdog+0x43e/0x5e0
<4>[  123.922149]  kthread+0xfb/0x130
<4>[  123.922151]  ? reset_hung_task_detector+0x10/0x10
<4>[  123.922154]  ? _kthread_create_on_node+0x30/0x30
<4>[  123.922157]  ret_from_fork+0x24/0x30
<6>[  123.922166] Sending NMI from CPU 0 to CPUs 1-7:
<4>[  123.922175] NMI backtrace for cpu 4 skipped: idling at
intel_idle+0x6f/0x120
<4>[  123.922189] NMI backtrace for cpu 7 skipped: idling at
intel_idle+0x6f/0x120
<4>[  123.922192] NMI backtrace for cpu 3 skipped: idling at
intel_idle+0x6f/0x120
<4>[  123.922195] NMI backtrace for cpu 1 skipped: idling at
intel_idle+0x6f/0x120
<4>[  123.922199] NMI backtrace for cpu 2 skipped: idling at
intel_idle+0x6f/0x120
<4>[  123.922212] NMI backtrace for cpu 6 skipped: idling at
intel_idle+0x6f/0x120
<4>[  123.922218] NMI backtrace for cpu 5 skipped: idling at
intel_idle+0x6f/0x120
<0>[  123.923181] Kernel panic - not syncing: hung_task: blocked tasks
<4>[  123.923221] CPU: 0 PID: 67 Comm: khungtaskd Tainted: G     U          
4.15.0-rc4-CI-CI_DRM_3546+ #1
<4>[  123.923274] Hardware name: MSI MS-7924/Z97M-G43(MS-7924), BIOS V1.12
02/15/2016
<4>[  123.923317] Call Trace:
<4>[  123.923340]  dump_stack+0x5f/0x86
<4>[  123.923367]  panic+0xcf/0x20d
<4>[  123.923401]  watchdog+0x44a/0x5e0
<4>[  123.923431]  kthread+0xfb/0x130
<4>[  123.923455]  ? reset_hung_task_detector+0x10/0x10
<4>[  123.923485]  ? _kthread_create_on_node+0x30/0x30
<4>[  123.923519]  ret_from_fork+0x24/0x30
<0>[  123.924041] Dumping ftrace buffer:
<0>[  123.924117]    (ftrace buffer empty)
<0>[  123.924131] Kernel Offset: disabled

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