[Bug 95060] New: X crashes when display port is connected on hp 840 g3

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=95060

            Bug ID: 95060
           Summary: X crashes when display port is connected on hp 840 g3
           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: yoshi314 at gmail.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

When booting the system with display port plugged in, i either get a boot time
crash, or X locks up (no reaction to input, but i can ssh in).

This is the log from the latter situation

[  267.077299] BUG: unable to handle kernel NULL pointer dereference at        
  (null)
[  267.077342] IP: [<          (null)>]           (null)
[  267.077364] PGD 222c2d067 PUD 223a5b067 PMD 0 
[  267.077387] Oops: 0010 [#1] SMP 
[  267.077404] Modules linked in: msr snd_hda_codec_hdmi snd_hda_codec_conexant
snd_hda_codec_generic arc4 iwlmvm i915 mac80211 btusb btrtl btbcm iwlwifi
btintel bluetooth drm_kms_helper x86_pkg_temp_thermal coretemp kvm_intel drm
kvm squashfs snd_hda_intel snd_hda_codec cfg80211 snd_hwdep snd_hda_core
snd_pcm irqbypass crct10dif_pclmul e1000e crc32_pclmul crc32c_intel
ghash_clmulni_intel pcspkr serio_raw snd_timer idma64 syscopyarea snd video
virt_dma sysfillrect intel_lpss_pci sysimgblt intel_lpss_acpi intel_hid
intel_lpss fb_sys_fops mfd_core tpm_infineon sparse_keymap soundcore rfkill
i2c_i801 efivarfs dm_zero dm_thin_pool dm_persistent_data dm_bio_prison
dm_service_time dm_round_robin dm_queue_length dm_multipath dm_log_userspace
dm_flakey dm_delay aesni_intel cbc sha256_generic scsi_transport_iscsi
[  267.077831]  virtio_net virtio_ring virtio tg3 libphy sky2 r8169 pcnet32 mii
igb ptp pps_core i2c_algo_bit i2c_core dca e1000 bnx2 atl1c fuse nfs lockd
grace sunrpc fscache jfs linear raid10 raid1 raid0 dm_raid raid456
async_raid6_recov async_memcpy async_pq async_xor async_tx dm_snapshot dm_bufio
dm_crypt dm_mirror dm_region_hash dm_log dm_mod firewire_core crc_itu_t
xhci_pci xhci_hcd usb_storage sx8 cciss sr_mod cdrom sg sd_mod ahci libahci
[  267.078110] CPU: 0 PID: 5418 Comm: X Tainted: G     U  W       4.5.1-gentoo
#3
[  267.078143] Hardware name: HP HP EliteBook 840 G3/8079, BIOS N75 Ver. 01.04
01/31/2016
[  267.078177] task: ffff88022317d000 ti: ffff880223dbc000 task.ti:
ffff880223dbc000
[  267.078208] RIP: 0010:[<0000000000000000>]  [<          (null)>]          
(null)
[  267.078241] RSP: 0018:ffff880223dbfb70  EFLAGS: 00010286
[  267.078263] RAX: ffff880223dbfc30 RBX: ffff880221477100 RCX:
00000000fffff0a7
[  267.078284] RDX: 00000000fffff0a7 RSI: ffff8802230c2078 RDI:
ffff88007eedb700
[  267.078301] RBP: ffff880223dbfbf0 R08: ffff88022028f458 R09:
00000000000000a0
[  267.078318] R10: 00003fffffe00000 R11: ffff88007eedb700 R12:
0000000000000001
[  267.078337] R13: ffff8802230c4528 R14: ffff8802230c2078 R15:
0000000000000000
[  267.078372] FS:  00007fb067aa19c0(0000) GS:ffff88022f400000(0000)
knlGS:0000000000000000
[  267.078390] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  267.078403] CR2: 0000000000000000 CR3: 0000000220537000 CR4:
00000000003406f0
[  267.078419] Stack:
[  267.078432]  ffffffffa094ed6f 0000000000000000 ffff8802230c207c
fffff0a723086b80
[  267.078468]  ffff880223dbfc30 ffff8802213fa700 ffff880221477100
ffff8802230c4538
[  267.078488]  ffff880223dbfbf0 ffffffffa095eb27 ffff880223dbfbf8
0000000000000000
[  267.078508] Call Trace:
[  267.078535]  [<ffffffffa094ed6f>] ? i915_gem_object_sync+0x17f/0x2f0 [i915]
[  267.078570]  [<ffffffffa095eb27>] ? intel_lr_context_do_pin.isra.6+0x77/0xf0
[i915]
[  267.078606]  [<ffffffffa096012c>] intel_execlists_submission+0x1ac/0x3f0
[i915]
[  267.078634]  [<ffffffffa094204c>] i915_gem_do_execbuffer.isra.13+0xc7c/0xdd0
[i915]
[  267.078662]  [<ffffffffa0942e07>] i915_gem_execbuffer2+0xd7/0x250 [i915]
[  267.078689]  [<ffffffffa094f9c2>] ? i915_gem_busy_ioctl+0x92/0xe0 [i915]
[  267.078713]  [<ffffffffa070a612>] drm_ioctl+0x152/0x540 [drm]
[  267.078737]  [<ffffffffa0942d30>] ? i915_gem_execbuffer+0x320/0x320 [i915]
[  267.078755]  [<ffffffff81425a83>] ? selinux_file_ioctl+0x113/0x1f0
[  267.078770]  [<ffffffff811d1142>] do_vfs_ioctl+0x92/0x580
[  267.078783]  [<ffffffff8141adb3>] ? security_file_ioctl+0x43/0x60
[  267.078798]  [<ffffffff811d16a9>] SyS_ioctl+0x79/0x90
[  267.078811]  [<ffffffff817ec1db>] entry_SYSCALL_64_fastpath+0x16/0x6e
[  267.078825] Code:  Bad RIP value.
[  267.078838] RIP  [<          (null)>]           (null)
[  267.078851]  RSP <ffff880223dbfb70>
[  267.078859] CR2: 0000000000000000
[  267.084838] ---[ end trace 3979714f1ad70e83 ]---


kernel is marked as tainted, possibly due to experiments with i915.semaphores=1
i915.fastboot=1   . I can try other boot options on demand.

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