[Bug 65927] New: [HSW] crash when vga output set to mirror mode

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=65927

          Priority: medium
            Bug ID: 65927
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [HSW] crash when vga output set to mirror mode
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: tjaalton at ubuntu.com
          Hardware: Other
            Status: NEW
           Version: XOrg CVS
         Component: DRM/Intel
           Product: DRI

Created attachment 81061
  --> https://bugs.freedesktop.org/attachment.cgi?id=81061&action=edit
dmesg with drm-intel-nightly from ~1w ago

HDMI works fine, VGA crashes when switching to mirror mode

[  418.588027] [drm:drm_mode_setcrtc], [CRTC:3]
[  418.588381] [drm:drm_mode_setcrtc], [CONNECTOR:12:eDP-1]
[  418.588724] [drm:drm_mode_setcrtc], [CONNECTOR:9:VGA-1]
[  418.588726] [drm:intel_crtc_set_config], [CRTC:3] [FB:26] #connectors=2 (x
y) (0 0)
[  418.588744] BUG: unable to handle kernel paging request at 0000002000000038
[  418.589116] IP: [<ffffffffa0514d98>]
intel_set_config_compute_mode_changes.isra.50+0x68/0x1b0 [i915]
[  418.589504] PGD 0 
[  418.589854] Oops: 0000 [#1] SMP 
[  418.589867] Modules linked in: snd_hda_codec_realtek coretemp i915
snd_hda_intel snd_hda_codec kvm snd_hwdep snd_pcm crc32_pclmul
ghash_clmulni_intel aesni_intel snd_seq_midi snd_rawmidi drm_kms_helper
snd_seq_midi_event rfcomm snd_seq uvcvideo ablk_helper snd_timer cryptd
parport_pc snd_seq_device lrw ppdev gf128mul lp bnep videobuf2_core joydev drm
snd parport bluetooth psmouse videodev hp_accel glue_helper hp_wmi
videobuf2_vmalloc lis3lv02d aes_x86_64 videobuf2_memops soundcore
snd_page_alloc dm_multipath input_polldev lpc_ich sparse_keymap rtsx_pci_ms
memstick i2c_algo_bit video serio_raw microcode scsi_dh mac_hid wmi(OF)
binfmt_misc dm_mirror dm_region_hash dm_log btrfs raid6_pq rtsx_pci_sdmmc
rtsx_pci r8169 ahci libahci xor zlib_deflate libcrc32c
[  418.590136] CPU: 7 PID: 1255 Comm: Xorg Tainted: GF          O
3.10.0-994-generic #201306100405
[  418.590161] Hardware name: Notebook PC, BIOS F.02 03/21/2013
[  418.590187] task: ffff8800365bddc0 ti: ffff88005411e000 task.ti:
ffff88005411e000
[  418.590209] RIP: 0010:[<ffffffffa0514d98>]  [<ffffffffa0514d98>]
intel_set_config_compute_mode_changes.isra.50+0x68/0x1b0 [i915]
[  418.590251] RSP: 0018:ffff88005411fc18  EFLAGS: 00010206
[  418.590266] RAX: 0000000000000550 RBX: ffff88005411fd48 RCX:
ffff880065ec1000
[  418.590287] RDX: 0000002000000000 RSI: 0000000000000aa0 RDI:
ffff880065f88000
[  418.590308] RBP: ffff88005411fc38 R08: ffff880065ec4478 R09:
ffff880052e36a60
[  418.590328] R10: 00000000000007f2 R11: 00000000000007f1 R12:
ffff880052e360d0
[  418.590349] R13: ffff880052e360d1 R14: ffff880065ec4000 R15:
ffff880065f88000
[  418.590370] FS:  00007fa55b157880(0000) GS:ffff8801003c0000(0000)
knlGS:0000000000000000
[  418.590393] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  418.590410] CR2: 0000002000000038 CR3: 000000005620f000 CR4:
00000000001407e0
[  418.590431] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[  418.590451] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
0000000000000400
[  418.590472] Stack:
[  418.590478]  ffff88005411fd48 ffff88005411fd48 ffff880052e360c0
ffff880052e360d1
[  418.590504]  ffff88005411fca8 ffffffffa051e215 0000000000000002
ffff880000000000
[  418.590529]  ffff880000000000 ffffffff81047eaf 0000000000000000
0000000000000000
[  418.590554] Call Trace:
[  418.590571]  [<ffffffffa051e215>] intel_crtc_set_config+0x125/0x2f0 [i915]
[  418.590594]  [<ffffffff81047eaf>] ? vprintk+0x1f/0x30
[  418.590621]  [<ffffffffa02d0d0e>] drm_mode_set_config_internal+0x2e/0x60
[drm]
[  418.590648]  [<ffffffffa02d39c8>] drm_mode_setcrtc+0x2e8/0x540 [drm]
[  418.590670]  [<ffffffff816c9acd>] ? mutex_lock+0x1d/0x50
[  418.590691]  [<ffffffffa02c354a>] drm_ioctl+0x50a/0x650 [drm]
[  418.590713]  [<ffffffffa02d36e0>] ? drm_mode_setplane+0x3e0/0x3e0 [drm]
[  418.590735]  [<ffffffff811987c7>] do_vfs_ioctl+0x87/0x330
[  418.590751]  [<ffffffff816ca8af>] ? __schedule+0x13f/0x6b0
[  418.590769]  [<ffffffff81198b01>] SyS_ioctl+0x91/0xb0
[  418.590786]  [<ffffffff816d5546>] system_call_fastpath+0x1a/0x1f
[  418.590803] Code: 83 c6 01 48 69 f6 50 05 00 00 eb 12 0f 1f 80 00 00 00 00
48 05 50 05 00 00 48 39 f0 74 35 48 8b 94 01 a0 04 00 00 48 85 d2 74 e8 <48> 3b
7a 38 75 e2 44 8b 84 01 84 04 00 00 45 85 c0 75 3b 48 05 
[  418.591714] RIP  [<ffffffffa0514d98>]
intel_set_config_compute_mode_changes.isra.50+0x68/0x1b0 [i915]
[  418.592563]  RSP <ffff88005411fc18>
[  418.593404] CR2: 0000002000000038

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