[Bug 81160] [BYT Regression]igt/kms_flip some subcases cause "WARNING: CPU: 0 PID: 3733 at drivers/gpu/drm/i915/intel_display.c:1231 __intel_set_mode+0xc59/0x1275 [i915]()"
bugzilla-daemon at freedesktop.org
bugzilla-daemon at freedesktop.org
Sun Aug 3 19:16:43 PDT 2014
https://bugs.freedesktop.org/show_bug.cgi?id=81160
--- Comment #1 from yaoming <ming.yao at intel.com> ---
This bug can't reproduce on 3.16.0-rc4_drm-intel-next-queued_17c58f_20140803
Dmesg shows:
[ 3.434513] WARNING: CPU: 0 PID: 1231 at
drivers/gpu/drm/i915/intel_dp.c:1202 intel_enable_dp+0x41/0x79 [i915]()
[ 3.434513] eDP VDD already requested on
[ 3.434519] Modules linked in: i915(+) video button drm_kms_helper drm
[ 3.434522] CPU: 0 PID: 1231 Comm: udevd Not tainted
3.16.0-rc4_drm-intel-next-queued_17c58f_20140803+ #1056
[ 3.434526] 0000000000000000 0000000000000009 ffffffff8177fe4d
ffff880071293418
[ 3.434529] ffffffff8103986c ffff880071123000 ffffffffa00d04bc
00000000001e1204
[ 3.434531] ffff880002d6f0d8 ffff880002db0000 ffff880002d6f0d8
ffff880075e8e000
[ 3.434532] Call Trace:
[ 3.434540] [<ffffffff8177fe4d>] ? dump_stack+0x41/0x51
[ 3.434544] [<ffffffff8103986c>] ? warn_slowpath_common+0x78/0x90
[ 3.434585] [<ffffffffa00d04bc>] ? intel_enable_dp+0x41/0x79 [i915]
[ 3.434588] [<ffffffff8103991c>] ? warn_slowpath_fmt+0x45/0x4a
[ 3.434628] [<ffffffffa00d04bc>] ? intel_enable_dp+0x41/0x79 [i915]
[ 3.434684] [<ffffffffa00d060a>] ? vlv_pre_enable_dp+0x100/0x11a [i915]
[ 3.434725] [<ffffffffa00b7e82>] ? valleyview_crtc_enable+0xae7/0xbdb
[i915]
[ 3.434765] [<ffffffffa00b50ba>] ? __intel_set_mode+0x111c/0x1224 [i915]
[ 3.434770] [<ffffffff81060300>] ? __dequeue_entity+0x19/0x2d
[ 3.434810] [<ffffffffa00bb318>] ? intel_set_mode+0xd/0x27 [i915]
[ 3.434850] [<ffffffffa00bbf47>] ? intel_crtc_set_config+0x757/0xaad [i915]
[ 3.434862] [<ffffffffa000bf1d>] ? drm_mode_set_config_internal+0x4b/0xb3
[drm]
[ 3.434867] [<ffffffffa0050a5a>] ? restore_fbdev_mode+0x8f/0xa8
[drm_kms_helper]
[ 3.434871] [<ffffffffa0050a90>] ?
drm_fb_helper_restore_fbdev_mode_unlocked+0x1d/0x34 [drm_kms_helper]
[ 3.434875] [<ffffffffa0051db7>] ? drm_fb_helper_set_par+0x3a/0x58
[drm_kms_helper]
[ 3.434914] [<ffffffffa00c4f04>] ? intel_fbdev_set_par+0x11/0x55 [i915]
[ 3.434918] [<ffffffff813650c9>] ? fbcon_init+0x2ff/0x408
[ 3.434922] [<ffffffff813b8d1d>] ? visual_init+0xaf/0x102
[ 3.434925] [<ffffffff813ba4ba>] ? do_bind_con_driver+0x1a1/0x2ca
[ 3.434928] [<ffffffff813ba715>] ? do_take_over_console+0x132/0x162
[ 3.434931] [<ffffffff813647b6>] ? do_fbcon_takeover+0x53/0x96
[ 3.434934] [<ffffffff81055751>] ? notifier_call_chain+0x2e/0x59
[ 3.434937] [<ffffffff81055890>] ? __blocking_notifier_call_chain+0x43/0x5d
[ 3.434941] [<ffffffff8136e37d>] ? register_framebuffer+0x23f/0x29d
[ 3.434945] [<ffffffffa005157e>] ? drm_fb_helper_initial_config+0x359/0x3ff
[drm_kms_helper]
[ 3.434983] [<ffffffffa00a610a>] ? gen6_write32+0x6c/0xbf [i915]
[ 3.435043] [<ffffffffa00e3b41>] ? i915_driver_load+0xcaa/0xedb [i915]
[ 3.435049] [<ffffffff8104a78e>] ? call_usermodehelper_exec+0xf4/0xff
[ 3.435052] [<ffffffff81040000>] ? ptrace_regset+0x61/0xf8
[ 3.435056] [<ffffffff8132bdde>] ? kobject_uevent_env+0x486/0x4c8
[ 3.435059] [<ffffffff813d4bd0>] ? get_device+0x10/0x1c
[ 3.435062] [<ffffffff813d6495>] ? device_add+0x50b/0x51c
[ 3.435066] [<ffffffff8132999e>] ? idr_replace+0x2d/0x93
[ 3.435074] [<ffffffffa000761f>] ? drm_dev_register+0x74/0xe7 [drm]
[ 3.435078] [<ffffffff8137ebfa>] ? acpi_pci_irq_enable+0x11c/0x12f
[ 3.435087] [<ffffffffa00097a6>] ? drm_get_pci_dev+0xf4/0x1af [drm]
[ 3.435090] [<ffffffff81350d4a>] ? local_pci_probe+0x36/0x7c
[ 3.435092] [<ffffffff8132a211>] ? ida_get_new_above+0x171/0x18b
[ 3.435095] [<ffffffff81350fee>] ? pci_device_probe+0xcc/0xf0
[ 3.435098] [<ffffffff813d8556>] ? driver_probe_device+0x9d/0x1d5
[ 3.435101] [<ffffffff813d868e>] ? driver_probe_device+0x1d5/0x1d5
[ 3.435104] [<ffffffff813d86e1>] ? __driver_attach+0x53/0x73
[ 3.435107] [<ffffffff813d6e4e>] ? bus_for_each_dev+0x4e/0x7f
[ 3.435109] [<ffffffff813d7e04>] ? bus_add_driver+0xe7/0x1cc
[ 3.435112] [<ffffffff813d8d2a>] ? driver_register+0x82/0xb5
[ 3.435115] [<ffffffffa0124000>] ? 0xffffffffa0123fff
[ 3.435118] [<ffffffff81000301>] ? do_one_initcall+0xe3/0x176
[ 3.435121] [<ffffffff8108bf6d>] ? load_module+0x1821/0x1b04
[ 3.435125] [<ffffffff81089b8d>] ? module_unload_free+0xca/0xca
[ 3.435128] [<ffffffff8108c2e0>] ? SyS_init_module+0x90/0x9b
[ 3.435131] [<ffffffff817859d2>] ? system_call_fastpath+0x16/0x1b
[ 3.435133] ---[ end trace a340767a1ac5f92d ]---
This issue is tracked by Bug 81697.
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