[Bug 87259] New: [ivb] WARN_ON(obj->frontbuffer_bits)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=87259

            Bug ID: 87259
           Summary: [ivb] WARN_ON(obj->frontbuffer_bits)
           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: chris at chris-wilson.co.uk
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

[ 6259.993457] WARNING: CPU: 4 PID: 671 at drivers/gpu/drm/i915/i915_gem.c:4511
i915_gem_free_object+0x2d5/0x310()
[ 6259.993463] WARN_ON(obj->frontbuffer_bits)
[ 6259.993469] CPU: 4 PID: 671 Comm: Xorg Tainted: G        W      3.18.0+ #156
[ 6259.993475] Hardware name: Intel Corporation 2012 Client Platform/Emerald
Lake 2, BIOS ACRVMBY1.86C.0078.P00.1201161002 01/16/2012
[ 6259.993480]  0000000000000009 ffff880252d6f9f8 ffffffff8156986c
00000000000038ac
[ 6259.993501]  ffff880252d6fa48 ffff880252d6fa38 ffffffff8108ba3c
ffff8802557a0000
[ 6259.993513]  ffff8802550aee98 ffff8802550aee40 ffff8802550aef08
ffff8802557a0000
[ 6259.993524] Call Trace:
[ 6259.993531]  [<ffffffff8156986c>] dump_stack+0x46/0x58
[ 6259.993538]  [<ffffffff8108ba3c>] warn_slowpath_common+0x7c/0xa0
[ 6259.993553]  [<ffffffff8108bad6>] warn_slowpath_fmt+0x46/0x50
[ 6259.993559]  [<ffffffff813965df>] ? i915_vma_unbind+0x1ef/0x230
[ 6259.993566]  [<ffffffff81397f25>] i915_gem_free_object+0x2d5/0x310
[ 6259.993573]  [<ffffffff8134d587>] drm_gem_object_free+0x27/0x40
[ 6259.993579]  [<ffffffff8134d710>]
drm_gem_object_handle_unreference_unlocked+0x120/0x130
[ 6259.993587]  [<ffffffff8134d777>] drm_gem_object_release_handle+0x57/0x80
[ 6259.993601]  [<ffffffff812b3fa5>] idr_for_each+0xa5/0x100
[ 6259.993607]  [<ffffffff8134d720>] ?
drm_gem_object_handle_unreference_unlocked+0x130/0x130
[ 6259.993615]  [<ffffffff8134e384>] drm_gem_release+0x24/0x40
[ 6259.993621]  [<ffffffff8134d24b>] drm_release+0x43b/0x520
[ 6259.993629]  [<ffffffff8117254b>] __fput+0xcb/0x1c0
[ 6259.993635]  [<ffffffff8117268e>] ____fput+0xe/0x10
[ 6259.993647]  [<ffffffff810a55f4>] task_work_run+0xd4/0xf0
[ 6259.993656]  [<ffffffff8108db5b>] do_exit+0x38b/0xa60
[ 6259.993662]  [<ffffffff8108c55a>] ? child_wait_callback+0x5a/0x60
[ 6259.993669]  [<ffffffff810b6538>] ? update_curr+0xe8/0x140
[ 6259.993676]  [<ffffffff8108e2c7>] do_group_exit+0x47/0xc0
[ 6259.993682]  [<ffffffff81099181>] get_signal+0x281/0x650
[ 6259.993694]  [<ffffffff81046588>] do_signal+0x28/0xb80
[ 6259.993702]  [<ffffffff810b4503>] ? account_system_time+0x83/0x180
[ 6259.993708]  [<ffffffff810b4276>] ? get_vtime_delta+0x16/0x90
[ 6259.993714]  [<ffffffff810b4115>] ? local_clock+0x25/0x30
[ 6259.993719]  [<ffffffff810b4475>] ? account_user_time+0x85/0x90
[ 6259.993726]  [<ffffffff810b48f4>] ? vtime_account_user+0x44/0x60
[ 6259.993732]  [<ffffffff8104713c>] do_notify_resume+0x5c/0xa0
[ 6259.993738]  [<ffffffff8156f660>] int_signal+0x12/0x17

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