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Date: Mon, 26 Jan 2015 11:25:08 +0800
From: Huang Ying <ying.huang@...el.com>
To: Daniel Vetter <daniel.vetter@...ll.ch>
Cc: LKML <linux-kernel@...r.kernel.org>, LKP ML <lkp@...org>
Subject: [LKP] [drm/probe] WARNING: CPU: 3 PID: 528 at
kernel/workqueue.c:1427 __queue_delayed_work+0x1a9/0x1c0()
FYI, we noticed the below changes on
git://anongit.freedesktop.org/drm-intel topic/core-stuff
commit 89d4375a050de1a2625a1ad3d0df9a57972b8c1a ("drm/probe-helper: don't lose hotplug event")
+-------------------------------------------------------+------------+------------+
| | 42c5814c9c | 89d4375a05 |
+-------------------------------------------------------+------------+------------+
| boot_successes | 20 | 10 |
| early-boot-hang | 1 | |
| boot_failures | 0 | 10 |
| WARNING:at_kernel/workqueue.c:#__queue_delayed_work() | 0 | 10 |
| WARNING:at_kernel/workqueue.c:#__queue_work() | 0 | 10 |
| backtrace:drm_fb_helper_initial_config | 0 | 10 |
| backtrace:mgag200_fbdev_init | 0 | 10 |
| backtrace:mgag200_modeset_init | 0 | 10 |
| backtrace:__pci_register_driver | 0 | 6 |
| backtrace:drm_pci_init | 0 | 6 |
| backtrace:mgag200_init | 0 | 6 |
| backtrace:load_module | 0 | 6 |
| backtrace:SyS_finit_module | 0 | 6 |
| backtrace:work_for_cpu_fn | 0 | 4 |
+-------------------------------------------------------+------------+------------+
[ 27.963836] ata2: SATA link down (SStatus 0 SControl 300)
[ 27.965776] ata6: SATA link down (SStatus 0 SControl 300)
[ 27.981757] ------------[ cut here ]------------
[ 27.981762] WARNING: CPU: 3 PID: 528 at kernel/workqueue.c:1427 __queue_delayed_work+0x1a9/0x1c0()
[ 27.981773] Modules linked in: mgag200(+) isci syscopyarea sysfillrect kvm sysimgblt ttm libsas drm_kms_helper crct10dif_pclmul scsi_transport_sas crc32_pclmul crc32c_intel snd_timer ghash_clmulni_intel drm snd soundcore aesni_intel ahci lrw libahci gf128mul sb_edac glue_helper ablk_helper cryptd pcspkr libata edac_core i2c_i801 ipmi_si microcode shpchp wmi acpi_cpufreq(-) pcc_cpufreq(-) ipmi_msghandler
[ 27.981775] CPU: 3 PID: 528 Comm: systemd-udevd Not tainted 3.19.0-rc5-wl-gd6a2e8c #1
[ 27.981776] Hardware name: Intel Corporation S2600WP/S2600WP, BIOS SE5C600.86B.02.02.0002.122320131210 12/23/2013
[ 27.981778] ffffffff81b77eb8 ffff880808d0b7c8 ffffffff818a5630 00000000419c419c
[ 27.981779] 0000000000000000 ffff880808d0b808 ffffffff810726ba 0000000000000286
[ 27.981780] 0000000000002000 ffff88081e80ce00 ffff88081a7c2bf8 ffff88081a7c2800
[ 27.981781] Call Trace:
[ 27.981785] [<ffffffff818a5630>] dump_stack+0x4c/0x65
[ 27.981787] [<ffffffff810726ba>] warn_slowpath_common+0x8a/0xc0
[ 27.981788] [<ffffffff810727aa>] warn_slowpath_null+0x1a/0x20
[ 27.981789] [<ffffffff81089f39>] __queue_delayed_work+0x1a9/0x1c0
[ 27.981790] [<ffffffff8108a15b>] queue_delayed_work_on+0x2b/0x50
[ 27.981794] [<ffffffffa0295b45>] drm_helper_probe_single_connector_modes_merge_bits+0x2f5/0x4e0 [drm_kms_helper]
[ 27.981796] [<ffffffff810dbce0>] ? internal_add_timer+0xb0/0xb0
[ 27.981799] [<ffffffffa0295d43>] drm_helper_probe_single_connector_modes+0x13/0x20 [drm_kms_helper]
[ 27.981803] [<ffffffffa029f780>] drm_fb_helper_probe_connector_modes+0x50/0x70 [drm_kms_helper]
[ 27.981806] [<ffffffffa02a0b9d>] drm_fb_helper_initial_config+0x4d/0x3a0 [drm_kms_helper]
[ 27.981817] [<ffffffffa02f4932>] ? drm_modeset_unlock_all+0x42/0x70 [drm]
[ 27.981820] [<ffffffffa02116c3>] mgag200_fbdev_init+0x103/0x130 [mgag200]
[ 27.981823] [<ffffffffa021011c>] mgag200_modeset_init+0x17c/0x1e0 [mgag200]
[ 27.981825] [<ffffffffa020c65d>] mgag200_driver_load+0x3ad/0x520 [mgag200]
[ 27.981831] [<ffffffffa02de7d5>] drm_dev_register+0xb5/0x110 [drm]
[ 27.981837] [<ffffffffa02e183d>] drm_get_pci_dev+0x8d/0x200 [drm]
[ 27.981840] [<ffffffffa0210e8f>] mga_pci_probe+0x9f/0xc0 [mgag200]
[ 27.981841] [<ffffffff81445755>] local_pci_probe+0x45/0xa0
[ 27.981843] [<ffffffff81446ac5>] ? pci_match_device+0xe5/0x110
[ 27.981844] [<ffffffff81446c01>] pci_device_probe+0xd1/0x120
[ 27.981847] [<ffffffff8154b780>] driver_probe_device+0x90/0x3e0
[ 27.981848] [<ffffffff8154bbab>] __driver_attach+0x9b/0xa0
[ 27.981850] [<ffffffff8154bb10>] ? __device_attach+0x40/0x40
[ 27.981851] [<ffffffff8154955b>] bus_for_each_dev+0x6b/0xb0
[ 27.981852] [<ffffffff8154b1fe>] driver_attach+0x1e/0x20
[ 27.981854] [<ffffffff8154adc0>] bus_add_driver+0x180/0x250
[ 27.981855] [<ffffffff8154c3b4>] driver_register+0x64/0xf0
[ 27.981856] [<ffffffff81444fac>] __pci_register_driver+0x4c/0x50
[ 27.981861] [<ffffffffa02e1aaa>] drm_pci_init+0xfa/0x130 [drm]
[ 27.981863] [<ffffffffa0061000>] ? 0xffffffffa0061000
[ 27.981865] [<ffffffffa006103c>] mgag200_init+0x3c/0x1000 [mgag200]
[ 27.981868] [<ffffffff81002130>] do_one_initcall+0xc0/0x1f0
[ 27.981870] [<ffffffff811c7dec>] ? kmem_cache_alloc_trace+0x1dc/0x250
[ 27.981872] [<ffffffff810fa499>] ? load_module+0x1449/0x1b70
[ 27.981873] [<ffffffff810fa4d2>] load_module+0x1482/0x1b70
[ 27.981874] [<ffffffff810f5ef0>] ? store_uevent+0x40/0x40
[ 27.981876] [<ffffffff810fad66>] SyS_finit_module+0x86/0xb0
[ 27.981879] [<ffffffff818add69>] system_call_fastpath+0x12/0x17
[ 27.981880] ---[ end trace cc8beb3d70a21b78 ]---
[ 27.981880] ------------[ cut here ]------------
Thanks,
Huang, Ying
View attachment "config-3.19.0-rc3-g89d4375" of type "text/plain" (127552 bytes)
Download attachment ".dmesg" of type "application/octet-stream" (218400 bytes)
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