[Bug 109981] New: [CI][SHARDS] igt at i915_selftest@mock_requests - dmesg-warn - BUG: unable to handle kernel NULL pointer dereference at 0000000000000000

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=109981

            Bug ID: 109981
           Summary: [CI][SHARDS] igt at i915_selftest@mock_requests -
                    dmesg-warn - BUG: unable to handle kernel NULL pointer
                    dereference at 0000000000000000
           Product: DRI
           Version: XOrg git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: martin.peres at free.fr
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

https://intel-gfx-ci.01.org/tree/drm-tip/IGT_4881/shard-iclb8/igt@i915_selftest@mock_requests.html

<6> [65.039091] i915: Running
i915_request_mock_selftests/mock_breadcrumbs_smoketest
<3> [65.862647] waiting for 395 fences (last 1069:2) on mock timed out!
<1> [65.862738] BUG: unable to handle kernel NULL pointer dereference at
0000000000000000
<1> [65.862745] #PF error: [INSTR]
<6> [65.862748] PGD 0 P4D 0 
<4> [65.862752] Oops: 0010 [#1] PREEMPT SMP NOPTI
<4> [65.862758] CPU: 2 PID: 1138 Comm: igt/2 Tainted: G     U           
5.0.0-CI-CI_DRM_5734+ #1
<4> [65.862765] Hardware name: Intel Corporation Ice Lake Client
Platform/IceLake U DDR4 SODIMM PD RVP TLC, BIOS
ICLSFWR1.R00.3087.A00.1902250334 02/25/2019
<4> [65.862774] RIP: 0010:          (null)
<4> [65.862780] Code: Bad RIP value.
<4> [65.862783] RSP: 0018:ffffc90000577de0 EFLAGS: 00010246
<4> [65.862788] RAX: 0000000000000000 RBX: ffff8884900c8058 RCX:
0000000000000000
<4> [65.862794] RDX: 0000000000000001 RSI: 00000000000001ff RDI:
ffff888499c1c000
<4> [65.862800] RBP: ffff888499c1c000 R08: 0000000000000f0a R09:
ffff88849d289000
<4> [65.862805] R10: ffff88849d289d68 R11: ffff88849e1bcfb8 R12:
ffff8884900c8058
<4> [65.862811] R13: ffff8884900c0918 R14: ffff8884900c8058 R15:
ffff8884900c8098
<4> [65.862816] FS:  0000000000000000(0000) GS:ffff88849fe80000(0000)
knlGS:0000000000000000
<4> [65.862823] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4> [65.862828] CR2: ffffffffffffffd6 CR3: 0000000495914001 CR4:
0000000000760ee0
<4> [65.862834] PKRU: 55555554
<4> [65.862836] Call Trace:
<4> [65.862887]  ? __i915_gem_set_wedged.part.5+0x7a/0x1f0 [i915]
<4> [65.862895]  ? printk+0x4d/0x69
<4> [65.862928]  ? i915_gem_set_wedged+0x2a/0x40 [i915]
<4> [65.862972]  ? __igt_breadcrumbs_smoketest+0x514/0x6f0 [i915]
<4> [65.862980]  ? wait_woken+0xa0/0xa0
<4> [65.863022]  ? i915_request_add+0x9d0/0x9d0 [i915]
<4> [65.863027]  ? kthread+0x119/0x130
<4> [65.863031]  ? kthread_park+0x80/0x80
<4> [65.863037]  ? ret_from_fork+0x24/0x50

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