[Bug 103708] [CI] igt at drv_selftest@mock_objects - dmesg-warn

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=103708

Chris Wilson <chris at chris-wilson.co.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
             Status|NEW                         |RESOLVED

--- Comment #5 from Chris Wilson <chris at chris-wilson.co.uk> ---
commit 9c52d1c816baa5b8c97485b20d95af29c98d26ee
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Fri Nov 10 23:24:47 2017 +0000

    drm/i915/selftests: Yet another forgotten mock_i915->mm initialiser

    Move all of the i915->mm initialisation to a private function that can
    be reused by the mock i915 device to save forgetting any more steps.

    For example,
    <7>[ 1542.046332] [IGT] drv_selftest: starting subtest mock_objects
    <4>[ 1542.123924] Setting dangerous option mock_selftests - tainting kernel
    <6>[ 1542.167941] i915: Performing mock selftests with
st_random_seed=0x246f5ab5 st_timeout=1000
    <4>[ 1542.178012] INFO: trying to register non-static key.
    <4>[ 1542.178027] the code is fine but needs lockdep annotation.
    <4>[ 1542.178032] turning off the locking correctness validator.
    <4>[ 1542.178041] CPU: 3 PID: 6008 Comm: kworker/3:7 Tainted: G     U      
   4.14.0-rc8-CI-CI_DRM_3332+ #1
    <4>[ 1542.178049] Hardware name:                  /NUC6CAYB, BIOS
AYAPLCEL.86A.0040.2017.0619.1722 06/19/2017
    <4>[ 1542.178144] Workqueue: events __i915_gem_free_work [i915]
    <4>[ 1542.178152] Call Trace:
    <4>[ 1542.178163]  dump_stack+0x68/0x9f
    <4>[ 1542.178170]  register_lock_class+0x3fd/0x580
    <4>[ 1542.178177]  ? unwind_next_frame+0x14/0x20
    <4>[ 1542.178184]  ? __save_stack_trace+0x73/0xd0
    <4>[ 1542.178191]  __lock_acquire+0xa4/0x1b00
    <4>[ 1542.178254]  ? __i915_gem_free_work+0x28/0xa0 [i915]
    <4>[ 1542.178261]  ? __lock_acquire+0x4ab/0x1b00
    <4>[ 1542.178268]  lock_acquire+0xb0/0x200
    <4>[ 1542.178273]  ? lock_acquire+0xb0/0x200
    <4>[ 1542.178336]  ? __i915_gem_free_work+0x28/0xa0 [i915]
    <4>[ 1542.178344]  _raw_spin_lock+0x32/0x50
    <4>[ 1542.178405]  ? __i915_gem_free_work+0x28/0xa0 [i915]
    <4>[ 1542.178468]  __i915_gem_free_work+0x28/0xa0 [i915]
    <4>[ 1542.178476]  process_one_work+0x221/0x650
    <4>[ 1542.178483]  worker_thread+0x4e/0x3c0
    <4>[ 1542.178489]  kthread+0x114/0x150
    <4>[ 1542.178494]  ? process_one_work+0x650/0x650
    <4>[ 1542.178499]  ? kthread_create_on_node+0x40/0x40
    <4>[ 1542.178506]  ret_from_fork+0x27/0x40

    v2: Fish out i915->mm.object_stat_lock which was being inited over in
    i915_drv.c (Matthew)

    Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
    Cc: Matthew Auld <matthew.auld at intel.com>
    Link:
https://patchwork.freedesktop.org/patch/msgid/20171110232447.21618-1-chris@chris-wilson.co.uk
    Reviewed-by: Matthew Auld <matthew.auld at intel.com>

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