[Bug 111476] New: check_for_unclaimed_mmio -- WARN_ON(debug_locks && !lock_is_held(&(&uncore->debug->lock)->dep_map))

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=111476

            Bug ID: 111476
           Summary: check_for_unclaimed_mmio --  WARN_ON(debug_locks &&
                    !lock_is_held(&(&uncore->debug->lock)->dep_map))
           Product: DRI
           Version: XOrg git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: not set
          Priority: not set
         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

[  187.019570] ------------[ cut here ]------------
[  187.019889] WARN_ON(debug_locks &&
!lock_is_held(&(&uncore->debug->lock)->dep_map))
[  187.020066] WARNING: CPU: 0 PID: 462 at
drivers/gpu/drm/i915/intel_uncore.c:505 check_for_unclaimed_mmio+0xae/0x120
[i915]
[  187.020187] Modules linked in: i915(+) drm_kms_helper nls_ascii nls_cp437
vfat fat intel_powerclamp crct10dif_pclmul crc32_pclmul crc32c_intel
ghash_clmulni_intel efi_pstore evdev aesni_intel aes_x86_64 glue_helper
crypto_simd prime_numbers intel_gtt cryptd sg intel_cstate efivars video button
efivarfs ip_tables x_tables autofs4 i2c_i801 lpc_ich ahci libahci [last
unloaded: drm_kms_helper]
[  187.020366] CPU: 0 PID: 462 Comm: i915_selftest Tainted: G     U           
5.3.0-rc5+ #15
[  187.020419] Hardware name:  /, BIOS PYBSWCEL.86A.0027.2015.0507.1758
05/07/2015
[  187.020579] RIP: 0010:check_for_unclaimed_mmio+0xae/0x120 [i915]
[  187.020624] Code: 5b 5d 41 5c c3 48 83 c7 18 be ff ff ff ff e8 49 a0 c7 e0
85 c0 75 15 48 c7 c6 98 5f 59 a0 48 c7 c7 74 9e 5c a0 e8 30 49 c2 e0 <0f> 0b 48
8b bb 40 01 00 00 e9 60 ff ff ff 89 ea 48 c7 c6 a8 9e 5c
[  187.020711] RSP: 0018:ffffc90000003e38 EFLAGS: 00010092
[  187.020753] RAX: 0000000000000047 RBX: ffff88825afc0d50 RCX:
0000000000000000
[  187.020798] RDX: ffff8882731e4300 RSI: 0000000000000000 RDI:
ffffffff810d06f7
[  187.020845] RBP: 00000000001820a0 R08: 0000000000000001 R09:
000000000002aac0
[  187.020891] R10: 0000004e96477004 R11: 0000000080000000 R12:
0000000000000001
[  187.020939] R13: 0000000000000000 R14: ffff88825afc0d68 R15:
0000000000000006
[  187.020985] FS:  00007ff36cd9f9c0(0000) GS:ffff888277a00000(0000)
knlGS:0000000000000000
[  187.021036] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  187.021077] CR2: 00007fc7c404a02f CR3: 0000000269584000 CR4:
00000000001006f0
[  187.021383] Call Trace:
[  187.021417]  <IRQ>
[  187.021571]  __unclaimed_reg_debug+0x10/0x50 [i915]
[  187.021724]  fwtable_read32+0x251/0x300 [i915]
[  187.021873]  cherryview_irq_handler+0xa5/0x240 [i915]
[  187.021925]  __handle_irq_event_percpu+0x3c/0x290
[  187.021970]  handle_irq_event_percpu+0x1b/0x50
[  187.022012]  handle_irq_event+0x2f/0x4c
[  187.022052]  handle_edge_irq+0x77/0x190
[  187.022091]  handle_irq+0x11/0x20
[  187.022129]  do_IRQ+0x52/0x100
[  187.022166]  common_interrupt+0xf/0xf
[  187.022204]  </IRQ>
[  187.022238] RIP: 0010:_raw_spin_unlock_irqrestore+0x4b/0x60

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