[Bug 91127] Graphics problems with intel_iommu=on on Linux >= 3.7

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91127

--- Comment #8 from Ting-Wei Lan <lantw44 at gmail.com> ---
My system hangs and I have to press the reset button to reboot it now.

Serial console log:

[ 2711.310268] Kernel panic - not syncing: DMAR hardware is malfunctioning
[ 2711.310268]
[ 2711.318436] CPU: 0 PID: 2670 Comm: Xorg Not tainted 4.1.0+ #1
[ 2711.324232] Hardware name: System manufacturer System Product Name/P7H55D-M
EVO, BIOS 1604    07/22/2010
[ 2711.333783]  0000000000000000 000000009fe49665 ffff8804090cbad8
ffffffff8179238b
[ 2711.341321]  0000000000000000 ffffffff81aa6d28 ffff8804090cbb58
ffffffff81791152
[ 2711.348858]  0000000200000008 ffff8804090cbb68 ffff8804090cbb08
000000009fe49665
[ 2711.356401] Call Trace:
[ 2711.358875]  [<ffffffff8179238b>] dump_stack+0x45/0x57
[ 2711.364059]  [<ffffffff81791152>] panic+0xd0/0x203
[ 2711.368898]  [<ffffffff814d24aa>] __iommu_flush_iotlb+0x21a/0x230
[ 2711.375046]  [<ffffffff814d29b9>] iommu_flush_iotlb_psi+0x99/0x110
[ 2711.381282]  [<ffffffff814d6d15>] intel_unmap+0x1c5/0x240
[ 2711.386729]  [<ffffffff814d6da2>] intel_unmap_sg+0x12/0x20
[ 2711.392306]  [<ffffffffa0178253>] i915_gem_gtt_finish_object+0xb3/0xe0
[i915]
[ 2711.399524]  [<ffffffffa017fc67>] i915_vma_unbind+0x227/0x250 [i915]
[ 2711.405953]  [<ffffffffa0180ace>] i915_gem_free_object+0x8e/0x330 [i915]
[ 2711.412728]  [<ffffffffa00963f7>] drm_gem_object_free+0x27/0x40 [drm]
[ 2711.419233]  [<ffffffffa0096988>]
drm_gem_object_handle_unreference_unlocked+0x118/0x130 [drm]
[ 2711.427922]  [<ffffffffa0096a45>] drm_gem_handle_delete+0xa5/0x100 [drm]
[ 2711.434691]  [<ffffffffa00970d0>] drm_gem_close_ioctl+0x20/0x30 [drm]
[ 2711.441192]  [<ffffffffa00979af>] drm_ioctl+0x12f/0x620 [drm]
[ 2711.446985]  [<ffffffff81205e8f>] ? __slab_free+0xbf/0x260
[ 2711.452526]  [<ffffffffa00970b0>] ? drm_gem_handle_create+0x50/0x50 [drm]
[ 2711.459369]  [<ffffffff8123a4e6>] do_vfs_ioctl+0x2c6/0x4d0
[ 2711.464899]  [<ffffffff8123a771>] SyS_ioctl+0x81/0xa0
[ 2711.469994]  [<ffffffff81023f27>] ? syscall_trace_leave+0xc7/0x140
[ 2711.476232]  [<ffffffff81798aee>] system_call_fastpath+0x12/0x71
[ 2711.482345] Kernel Offset: disabled
[ 2711.485867] drm_kms_helper: panic occurred, switching back to text console
[ 2711.492832] ------------[ cut here ]------------
[ 2711.497495] WARNING: CPU: 0 PID: 2670 at arch/x86/kernel/smp.c:124
native_smp_send_reschedule+0x61/0x70()
[ 2711.507133] Modules linked in: bnep bluetooth rfkill ipt_MASQUERADE
nf_nat_masquerade_ipv4 xt_CHECKSUM nf_conntrack_netbios_ns
nf_conntrack_broadcast ip6t_rpfilter tun ip6t_REJECT nf_reject_ipv6
xt_conntrack ebtable_nat ebtable_broute bridge ebtable_filter ebtables
ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle
ip6table_security ip6table_raw ip6table_filter ip6_tables iptable_nat
nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_mangle
iptable_security iptable_raw hwmon_vid snd_hda_codec_hdmi coretemp kvm_intel
kvm snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel
snd_hda_controller iTCO_wdt snd_hda_codec iTCO_vendor_support fuse
crct10dif_pclmul snd_hda_core crc32_pclmul crc32c_intel snd_hwdep
ghash_clmulni_intel snd_seq snd_seq_device snd_pcm snd_timer snd shpchp pcspkr
i2c_i801 mei_me mei soundcore asus_atk0110 lpc_ich mfd_core acpi_cpufreq nfsd
auth_rpcgss nfs_acl lockd grace sunrpc binfmt_misc ata_generic pata_acpi i915
i2c_algo_bit video drm_kms_helper 8021q garp stp llc drm mrp firewire_ohci
r8169 uas serio_raw usb_storage mii firewire_core pata_marvell crc_itu_t
[ 2711.609743] CPU: 0 PID: 2670 Comm: Xorg Not tainted 4.1.0+ #1
[ 2711.615538] Hardware name: System manufacturer System Product Name/P7H55D-M
EVO, BIOS 1604    07/22/2010
[ 2711.625089]  0000000000000000 000000009fe49665 ffff88041fc03d68
ffffffff8179238b
[ 2711.632626]  0000000000000000 0000000000000000 ffff88041fc03da8
ffffffff8109f4da
[ 2711.640163]  ffff88041fc17838 0000000000000001 ffff88041fc577c0
0000000000000000
[ 2711.647699] Call Trace:
[ 2711.650172]  <IRQ>  [<ffffffff8179238b>] dump_stack+0x45/0x57
[ 2711.655996]  [<ffffffff8109f4da>] warn_slowpath_common+0x8a/0xc0
[ 2711.662048]  [<ffffffff8109f60a>] warn_slowpath_null+0x1a/0x20
[ 2711.667928]  [<ffffffff8104da81>] native_smp_send_reschedule+0x61/0x70
[ 2711.674507]  [<ffffffff810dc62d>] trigger_load_balance+0x13d/0x240
[ 2711.680739]  [<ffffffff810c9f47>] scheduler_tick+0x97/0xe0
[ 2711.686275]  [<ffffffff811079c1>] update_process_times+0x51/0x60
[ 2711.692333]  [<ffffffff81117fa5>] tick_sched_handle.isra.18+0x25/0x60
[ 2711.698829]  [<ffffffff81118024>] tick_sched_timer+0x44/0x80
[ 2711.704538]  [<ffffffff81108613>] __run_hrtimer+0x73/0x1d0
[ 2711.710069]  [<ffffffff81117fe0>] ? tick_sched_handle.isra.18+0x60/0x60
[ 2711.719486]  [<ffffffff81108b13>] hrtimer_interrupt+0x103/0x220
[ 2711.728189]  [<ffffffff810503ec>] local_apic_timer_interrupt+0x3c/0x70
[ 2711.737492]  [<ffffffff8179b8f1>] smp_apic_timer_interrupt+0x41/0x60
[ 2711.746586]  [<ffffffff817999be>] apic_timer_interrupt+0x6e/0x80
[ 2711.755293]  <EOI>  [<ffffffff810dbbfe>] ? pick_next_task_fair+0x5ce/0x980
[ 2711.764918]  [<ffffffff81794897>] ? __schedule+0x6e7/0x970
[ 2711.773139]  [<ffffffff8179427b>] ? __schedule+0xcb/0x970
[ 2711.781235]  [<ffffffff81794b57>] schedule+0x37/0x90
[ 2711.788883]  [<ffffffff81794e9e>] schedule_preempt_disabled+0xe/0x10
[ 2711.797936]  [<ffffffff810e6775>] mutex_optimistic_spin+0x1a5/0x1e0
[ 2711.806901]  [<ffffffff8179699a>] __mutex_lock_slowpath+0x3a/0x120
[ 2711.815786]  [<ffffffff81796aa3>] mutex_lock+0x23/0x40
[ 2711.823659]  [<ffffffffa01bca7e>] intel_begin_crtc_commit+0x7e/0x1c0 [i915]
[ 2711.833373]  [<ffffffffa011e8d2>] drm_plane_helper_commit+0x132/0x300
[drm_kms_helper]
[ 2711.844045]  [<ffffffffa011ebec>] drm_plane_helper_disable+0x5c/0xb0
[drm_kms_helper]
[ 2711.854626]  [<ffffffffa00a359e>] drm_plane_force_disable+0x2e/0x90 [drm]
[ 2711.864159]  [<ffffffffa0127b41>] restore_fbdev_mode+0x51/0xf0
[drm_kms_helper]
[ 2711.874225]  [<ffffffffa0127d95>] drm_fb_helper_force_kernel_mode+0x85/0xc0
[drm_kms_helper]
[ 2711.885444]  [<ffffffffa0128c49>] drm_fb_helper_panic+0x29/0x30
[drm_kms_helper]
[ 2711.895589]  [<ffffffff810bf04f>] notifier_call_chain+0x4f/0x80
[ 2711.904268]  [<ffffffff810bf11a>] atomic_notifier_call_chain+0x1a/0x20
[ 2711.913566]  [<ffffffff8179117f>] panic+0xfd/0x203
[ 2711.921122]  [<ffffffff814d24aa>] __iommu_flush_iotlb+0x21a/0x230
[ 2711.929980]  [<ffffffff814d29b9>] iommu_flush_iotlb_psi+0x99/0x110
[ 2711.938925]  [<ffffffff814d6d15>] intel_unmap+0x1c5/0x240
[ 2711.947084]  [<ffffffff814d6da2>] intel_unmap_sg+0x12/0x20
[ 2711.955340]  [<ffffffffa0178253>] i915_gem_gtt_finish_object+0xb3/0xe0
[i915]
[ 2711.965259]  [<ffffffffa017fc67>] i915_vma_unbind+0x227/0x250 [i915]
[ 2711.974391]  [<ffffffffa0180ace>] i915_gem_free_object+0x8e/0x330 [i915]
[ 2711.983834]  [<ffffffffa00963f7>] drm_gem_object_free+0x27/0x40 [drm]
[ 2711.992999]  [<ffffffffa0096988>]
drm_gem_object_handle_unreference_unlocked+0x118/0x130 [drm]
[ 2712.004326]  [<ffffffffa0096a45>] drm_gem_handle_delete+0xa5/0x100 [drm]
[ 2712.013658]  [<ffffffffa00970d0>] drm_gem_close_ioctl+0x20/0x30 [drm]
[ 2712.022634]  [<ffffffffa00979af>] drm_ioctl+0x12f/0x620 [drm]
[ 2712.030802]  [<ffffffff81205e8f>] ? __slab_free+0xbf/0x260
[ 2712.038632]  [<ffffffffa00970b0>] ? drm_gem_handle_create+0x50/0x50 [drm]
[ 2712.047675]  [<ffffffff8123a4e6>] do_vfs_ioctl+0x2c6/0x4d0
[ 2712.055324]  [<ffffffff8123a771>] SyS_ioctl+0x81/0xa0
[ 2712.062446]  [<ffffffff81023f27>] ? syscall_trace_leave+0xc7/0x140
[ 2712.070685]  [<ffffffff81798aee>] system_call_fastpath+0x12/0x71
[ 2712.078714] ---[ end trace 429f9f85c882e9c4 ]---

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