Bug 88041

Summary:	[BYT]igt/drv_missed_irq_hang fails
Product:	DRI	Reporter:	lu hua <huax.lu>
Component:	DRM/Intel	Assignee:	Chris Wilson <chris>
Status:	CLOSED FIXED	QA Contact:	Intel GFX Bugs mailing list <intel-gfx-bugs>
Severity:	normal
Priority:	medium	CC:	intel-gfx-bugs
Version:	unspecified
Hardware:	All
OS:	Linux (All)
Whiteboard:
i915 platform:		i915 features:

Description lu hua 2015-01-05 06:24:38 UTC

==System Environment==
--------------------------
Regression: not sure

Non-working platforms:  BYT(N2810  @ 2.00GHz)

==kernel==
--------------------------
drm-intel-nightly/07d0c831d9207c937595f081c8fddbddbf53756f
commit 07d0c831d9207c937595f081c8fddbddbf53756f
Author: Jani Nikula <jani.nikula@intel.com>
Date:   Tue Dec 30 15:02:01 2014 +0200

    drm-intel-nightly: 2014y-12m-30d-13h-01m-34s UTC integration manifest

==Bug detailed description==
-----------------------------
It only happens on single machine. Test drm-intel-fixes, drm-intel-nightly and drm-intel-next-queued kernel, they all have this issue.  Test on earlier kernel, it also has this issue.

output:
Interrupts masked

dmesg:
[  117.519273] netpoll: netconsole: remote ethernet address 00:10:60:31:90:99
[  117.519409] netpoll: netconsole: local IP 10.239.156.137
[  117.519553] console [netcon0] enabled
[  117.519604] netconsole: network logging started
[  117.524861] console [netcon0] disabled
[  117.542277] netpoll: netconsole: remote port 6666
[  117.542337] netpoll: netconsole: remote IPv4 address 10.239.156.112
[  117.542419] netpoll: netconsole: remote ethernet address 00:10:60:31:90:99
[  117.542520] netpoll: netconsole: local IP 10.239.156.137
[  117.542654] console [netcon0] enabled
[  117.542707] netconsole: network logging started
[  130.948896] [drm:i915_error_state_write] Resetting error state
[  130.951557] [drm:i915_ring_test_irq_set] Masking interrupts on rings 0x0000000f
[  130.979957] gem_exec_blt: executing
[  130.980164] gem_exec_blt: starting subtest normal
[  130.980275] [drm:i915_gem_open]
[  134.999697] [drm] Fake missed irq on bsd ring
[  134.999882] [drm:i915_gem_open]
[  139.007468] [drm] Fake missed irq on blitter ring
[  139.155455] gem_exec_blt: starting subtest dumb-buf
[  139.155574] [drm:i915_gem_open]
[  139.248026] [drm:intel_crtc_set_config] [CRTC:19] [FB:46] #connectors=1 (x y) (0 0)
[  139.250939] [drm:intel_set_config_compute_mode_changes] computed changes for [CRTC:19], mode_changed=0, fb_changed=0

==Reproduce steps==
---------------------------- 
1.  ./drv_missed_irq_hang

Comment 1 Jesse Barnes 2015-04-02 18:28:32 UTC

Dunno what this test is doing, but it doesn't hang:

[root@jbarnes-byt tests]$ ./drv_missed_irq_hang 
Interrupts masked
gem_exec_blt: igt_core.c:443: common_exit_handler: Assertion `sig != 0 || igt_exit_called' failed.
./drv_missed_irq_hang: line 13: 30877 Aborted                 $SOURCE_DIR/gem_exec_blt 16384
gem_exec_blt: igt_core.c:443: common_exit_handler: Assertion `sig != 0 || igt_exit_called' failed.
./drv_missed_irq_hang: line 13: 30880 Aborted                 $SOURCE_DIR/gem_exec_blt 65536
gem_exec_blt: igt_core.c:443: common_exit_handler: Assertion `sig != 0 || igt_exit_called' failed.
./drv_missed_irq_hang: line 13: 30882 Aborted                 $SOURCE_DIR/gem_exec_blt 262144
gem_exec_blt: igt_core.c:443: common_exit_handler: Assertion `sig != 0 || igt_exit_called' failed.
./drv_missed_irq_hang: line 13: 30887 Aborted                 $SOURCE_DIR/gem_exec_blt 16384
gem_exec_blt: igt_core.c:443: common_exit_handler: Assertion `sig != 0 || igt_exit_called' failed.
./drv_missed_irq_hang: line 13: 30889 Aborted                 $SOURCE_DIR/gem_exec_blt 65536
gem_exec_blt: igt_core.c:443: common_exit_handler: Assertion `sig != 0 || igt_exit_called' failed.
./drv_missed_irq_hang: line 13: 30891 Aborted                 $SOURCE_DIR/gem_exec_blt 262144
Interrupts unmasked
gem_exec_blt: igt_core.c:443: common_exit_handler: Assertion `sig != 0 || igt_exit_called' failed.
./drv_missed_irq_hang: line 13: 30896 Aborted                 $SOURCE_DIR/gem_exec_blt 16384
gem_exec_blt: igt_core.c:443: common_exit_handler: Assertion `sig != 0 || igt_exit_called' failed.
./drv_missed_irq_hang: line 13: 30898 Aborted                 $SOURCE_DIR/gem_exec_blt 65536
gem_exec_blt: igt_core.c:443: common_exit_handler: Assertion `sig != 0 || igt_exit_called' failed.
./drv_missed_irq_hang: line 13: 30901 Aborted                 $SOURCE_DIR/gem_exec_blt 262144
Cleared missed interrupts

Looks like gem_exec_blt needs fixes to be run under drv_missed_interrupt these days.

Comment 2 Chris Wilson 2015-04-02 19:19:16 UTC

commit e8457edba6c41c4d44758e28adabf864be764c00
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date:   Thu Apr 2 20:14:07 2015 +0100

    igt/gem_exec_blt: Prevent assertion failure when running as a test load
    
    gem_exec_blt is used by other scripts to provide a background load, for
    example by drv_missed_irq. This mode doesn't act like a normal test and
    igt complains bitterly about it.
    
    Let's just ignore igt here.
    
    References: https://bugs.freedesktop.org/show_bug.cgi?id=88041
    Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

Comment 3 ye.tian 2015-04-03 06:48:23 UTC

Verfied it on the latest nightly kernel(333cf6) and igt(e8457e).

Comment 4 Elizabeth 2017-10-06 14:32:39 UTC

Closing old verified.

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