[Bug 72917] [HSW] kms_flip hangs the machine

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=72917

--- Comment #2 from Paulo Zanoni <przanoni at gmail.com> ---
Also spotted this once while running the suite:

[ 1650.790400] [drm:i915_error_work_func], resetting chip
[ 1650.791275] [drm] Simulated gpu hang, resetting stop_rings
[ 1650.791395] [drm:init_status_page], render ring hws offset: 0x00211000
[ 1650.791803] [drm:init_pipe_control], render ring pipe control offset:
0x00232000
[ 1650.791925] [drm:init_status_page], bsd ring hws offset: 0x00233000
[ 1650.792349] [drm:init_status_page], blitter ring hws offset: 0x00254000
[ 1650.792851] [drm:init_status_page], video enhancement ring hws offset:
0x00275000
[ 1650.793155] [drm:gm45_get_vblank_counter], trying to get vblank count for
disabled pipe A
[ 1650.793161] [drm:gm45_get_vblank_counter], trying to get vblank count for
disabled pipe B
[ 1650.793348] [drm:ironlake_update_plane], Writing base 0CB4F000 00000028 10 0
15360
[ 1650.793723] [drm:i915_gem_open],
[ 1650.794657] [drm:gen6_ppgtt_init], Allocated pde space (2M) at GTT entry:
5c70
[ 1650.795087] [drm:i915_error_state_write], Resetting error state
[ 1650.795836] [drm:i915_gem_open],
[ 1650.796453] [drm:gen6_ppgtt_init], Allocated pde space (2M) at GTT entry:
5c70
[ 1650.796794] [drm:i915_ring_stop_set], Stopping rings 0x0000000f
[ 1650.796848] ------------[ cut here ]------------
[ 1650.796863] WARNING: CPU: 0 PID: 1467 at
drivers/gpu/drm/i915/i915_gem.c:3899 i915_gem_object_pin+0x6fe/0x720 [i915
]()
[ 1650.796864] Modules linked in: fuse ip6table_filter ip6_tables ebtable_nat
ebtables iTCO_wdt iTCO_vendor_support x8
6_pkg_temp_thermal coretemp microcode serio_raw pcspkr e1000e ptp mei_me mei
i2c_i801 lpc_ich pps_core mfd_core uinput
 dm_crypt i915 i2c_algo_bit drm_kms_helper crc32_pclmul crc32c_intel drm
ghash_clmulni_intel video
[ 1650.796881] CPU: 0 PID: 1467 Comm: kms_flip Not tainted 3.13.0-rc4+ #90
[ 1650.796883] Hardware name: Intel Corporation Shark Bay Client
platform/WhiteTip Mountain 1, BIOS HSWLPTU1.86C.0133.
R00.1309172123 09/17/2013
[ 1650.796884]  0000000000000009 ffff880080699b20 ffffffff81648376
0000000000000000
[ 1650.796887]  ffff880080699b58 ffffffff81054c6d ffff880035e43828
0000000000000000
[ 1650.796890]  ffff88007de4fc00 ffff880093f7a8a0 ffff88007de4fcf0
ffff880080699b68
[ 1650.796892] Call Trace:
[ 1650.796897]  [<ffffffff81648376>] dump_stack+0x4d/0x66
[ 1650.796900]  [<ffffffff81054c6d>] warn_slowpath_common+0x7d/0xa0
[ 1650.796902]  [<ffffffff81054d4a>] warn_slowpath_null+0x1a/0x20
[ 1650.796910]  [<ffffffffa00ae3ce>] i915_gem_object_pin+0x6fe/0x720 [i915]
[ 1650.796914]  [<ffffffff81190f00>] ? kmem_cache_alloc_trace+0x100/0x210
[ 1650.796928]  [<ffffffffa00ff8fe>] ? intel_ring_begin+0xbe/0x170 [i915]
[ 1650.796936]  [<ffffffffa00b0fa2>] do_switch+0x192/0x540 [i915]
[ 1650.796943]  [<ffffffffa00b2193>] i915_switch_context+0x53/0x80 [i915]
[ 1650.796951]  [<ffffffffa00b4422>]
i915_gem_do_execbuffer.isra.22+0x8b2/0x12a0 [i915]
[ 1650.796958]  [<ffffffffa00b52c1>] ? i915_gem_execbuffer2+0x51/0x290 [i915]
[ 1650.796965]  [<ffffffffa00b5316>] i915_gem_execbuffer2+0xa6/0x290 [i915]
[ 1650.796972]  [<ffffffffa0029bb2>] drm_ioctl+0x4f2/0x630 [drm]
[ 1650.796976]  [<ffffffff811cbf3e>] ? mntput_no_expire+0x6e/0x1c0
[ 1650.796978]  [<ffffffff811cbee7>] ? mntput_no_expire+0x17/0x1c0
[ 1650.796981]  [<ffffffff811be970>] do_vfs_ioctl+0x300/0x520
[ 1650.796984]  [<ffffffff810ef73c>] ? __audit_syscall_entry+0x9c/0xf0
[ 1650.796986]  [<ffffffff811bebd5>] SyS_ioctl+0x45/0x80
[ 1650.796988]  [<ffffffff81659792>] system_call_fastpath+0x16/0x1b
[ 1650.796990] ---[ end trace 81da9ea827d78249 ]---
[ 1650.797067] [drm:drm_mode_getresources], CRTC[3] CONNECTORS[4] ENCODERS[3]
[ 1650.797072] [drm:drm_mode_getresources], CRTC[3] CONNECTORS[4] ENCODERS[3]

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