Bug 190021

Summary:	WARNING: CPU: 0 PID: 38 at drivers/gpu/drm/drm_atomic_helper.c:1549 drm_atomic_helper_commit_hw_done+0xa6/0xb0 [drm_kms_helper]
Product:	Drivers	Reporter:	Joachim Frieben (jfrieben)
Component:	Video(DRI - non Intel)	Assignee:	drivers_video-dri
Status:	NEW ---
Severity:	normal
Priority:	P1
Hardware:	x86-64
OS:	Linux
Kernel Version:	4.8.12	Subsystem:
Regression:	No	Bisected commit-id:

Description Joachim Frieben 2016-12-10 15:48:35 UTC

This bug was initially reported as https://bugzilla.redhat.com/show_bug.cgi?id=1366820:

Additional info:
reporter:       libreport-2.7.2
WARNING: CPU: 0 PID: 95 at drivers/gpu/drm/drm_atomic_helper.c:1549 drm_atomic_helper_commit_hw_done+0xab/0xb0 [drm_kms_helper]
Modules linked in: uinput nf_conntrack_netbios_ns nf_conntrack_broadcast ip6t_REJECT nf_reject_ipv6 ip6t_rpfilter xt_conntrack ip_set nfnetlink ebtable_broute bridge stp llc ebtable_nat ip6table_mangle ip6table_security ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_raw iptable_mangle iptable_security iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_raw ebtable_filter ebtables ip6table_filter ip6_tables ppdev snd_intel8x0 snd_ac97_codec ac97_bus snd_seq snd_seq_device joydev snd_pcm virtio_balloon virtio_gpu ttm drm_kms_helper parport_pc snd_timer drm parport acpi_cpufreq snd tpm_tis tpm_tis_core qemu_fw_cfg i2c_piix4 soundcore tpm nfsd auth_rpcgss nfs_acl lockd grace sunrpc virtio_console 8139too serio_raw 8139cp mii virtio_pci
 virtio_ring virtio ata_generic pata_acpi
CPU: 0 PID: 95 Comm: kworker/0:1 Not tainted 4.8.0-0.rc1.git3.1.fc25.x86_64 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.1-1.fc24 04/01/2014
Workqueue: events drm_mode_rmfb_work_fn [drm]
 0000000000000286 000000006be66137 ffff9dbf75d8bb40 ffffffff98467a83
 0000000000000000 0000000000000000 ffff9dbf75d8bb80 ffffffff980ae70b
 0000060d00000000 ffff9dbf9aa70d18 0000000000000000 ffff9dbf86f9ac00
Call Trace:
 [<ffffffff98467a83>] dump_stack+0x86/0xc3
 [<ffffffff980ae70b>] __warn+0xcb/0xf0
 [<ffffffff980ae83d>] warn_slowpath_null+0x1d/0x20
 [<ffffffffc037961b>] drm_atomic_helper_commit_hw_done+0xab/0xb0 [drm_kms_helper]
 [<ffffffffc0352b40>] vgdev_atomic_commit_tail+0x40/0x60 [virtio_gpu]
 [<ffffffffc037c51c>] commit_tail+0x3c/0x60 [drm_kms_helper]
 [<ffffffffc037c5f0>] drm_atomic_helper_commit+0xb0/0xd0 [drm_kms_helper]
 [<ffffffffc031baa7>] drm_atomic_commit+0x37/0x60 [drm]
 [<ffffffffc037cded>] drm_atomic_helper_set_config+0x7d/0xb0 [drm_kms_helper]
 [<ffffffffc03096e5>] drm_mode_set_config_internal+0x65/0x110 [drm]
 [<ffffffffc0309a16>] drm_framebuffer_remove+0x106/0x150 [drm]
 [<ffffffffc0309aa3>] drm_mode_rmfb_work_fn+0x43/0x60 [drm]
 [<ffffffff980ce99e>] process_one_work+0x23e/0x6f0
 [<ffffffff980ce91a>] ? process_one_work+0x1ba/0x6f0
 [<ffffffff980cee9e>] worker_thread+0x4e/0x490
 [<ffffffff980cee50>] ? process_one_work+0x6f0/0x6f0
 [<ffffffff980cee50>] ? process_one_work+0x6f0/0x6f0
 [<ffffffff980d6201>] kthread+0x101/0x120
 [<ffffffff9810e685>] ? trace_hardirqs_on_caller+0xf5/0x1b0
 [<ffffffff988f9def>] ret_from_fork+0x1f/0x40
 [<ffffffff980d6100>] ? kthread_create_on_node+0x250/0x250