[linux-uvc-devel] uvcvideo crashes while system under load

[Grozdan]

Hi,

I'm running kernel 3.17.2 and I have a webcam which takes every 5
seconds a shot. The server on which it is running on is also crunching
for BOINC from 9pm to 9am. Whenever the server is under heavy CPU load
during crunch time, I often get the below messages. The webcam
continues to operate though, as if nothing happened

The PID below indicates that it's the capturing software fswebcam
triggering this. It never happened on and older kernel (3.11.10 for
example). Where should I look at? fswebcam or is this the video
subsystem at fault?

[2014-11-03 23:45:16] uvcvideo: Failed to submit URB 0 (-27).
[2014-11-03 23:45:16] ------------[ cut here ]------------
[2014-11-03 23:45:16] WARNING: CPU: 1 PID: 11864 at
drivers/media/v4l2-core/videobuf2-core.c:2144
__vb2_queue_cancel+0x116/0x180 [videobuf2_core]()
[2014-11-03 23:45:16] Modules linked in: nvidia_uvm(PO) fuse ip6t_rt
ip6table_filter ip6table_raw xt_pkttype xt_tcpudp xt_recent
xt_conntrack iptable_filter xt_CT iptable_raw nf_conntrack_ipv6
nf_defrag_ipv6 nf_conntrack_ipv4 nf_defrag_ipv4
nf_conntrack_netbios_ns nf_conntrack_broadcast nf_conntrack ip6_tables
ip_tables x_tables iscsi_ibft iscsi_boot_sysfs af_packet nvidia(PO)
joydev hid_generic usbhid drm hid uvcvideo videobuf2_vmalloc
videobuf2_memops videobuf2_core v4l2_common videodev media kvm_amd kvm
ppdev microcode serio_raw sp5100_tco pcspkr r8169 edac_core mii
snd_hda_codec_hdmi i2c_piix4 i2c_core snd_hda_intel snd_hda_controller
snd_hda_codec snd_hwdep snd_pcm snd_timer snd soundcore k10temp
acpi_cpufreq processor parport_pc parport asus_atk0110 thermal_sys
rtc_cmos hwmon tcp_vegas dm_mod xfs crc32c_generic
[2014-11-03 23:45:16] libcrc32c sd_mod crc_t10dif crct10dif_generic
sr_mod cdrom crct10dif_common ata_generic ohci_pci ahci ehci_pci
pata_atiixp ohci_hcd libahci xhci_hcd ehci_hcd libata usbcore
usb_common wmi button sg scsi_mod ipv6 autofs4
[2014-11-03 23:45:16] CPU: 1 PID: 11864 Comm: fswebcam Tainted: P
W O 3.17.2-positron #1
[2014-11-03 23:45:16] Hardware name: System manufacturer System
Product Name/M4A77T/USB3, BIOS 0601 11/29/2010
[2014-11-03 23:45:16] 0000000000000009 ffff8802920e7c00
ffffffff814d01af 0000000000000000
[2014-11-03 23:45:16] ffff8802920e7c38 ffffffff81049148
0000000000000000 ffff880320e7c2f0
[2014-11-03 23:45:16] 0000000000000000 ffff880320e7c0d8
ffff88031f406380 ffff8802920e7c48
[2014-11-03 23:45:16] Call Trace:
[2014-11-03 23:45:16] [<ffffffff814d01af>] dump_stack+0x45/0x56
[2014-11-03 23:45:16] [<ffffffff81049148>] warn_slowpath_common+0x78/0xa0
[2014-11-03 23:45:16] [<ffffffff81049225>] warn_slowpath_null+0x15/0x20
[2014-11-03 23:45:16] [<ffffffffa0cc19f6>]
__vb2_queue_cancel+0x116/0x180 [videobuf2_core]
[2014-11-03 23:45:16] [<ffffffffa0cc1a76>]
vb2_internal_streamoff+0x16/0x60 [videobuf2_core]
[2014-11-03 23:45:16] [<ffffffffa0cc1ad8>] vb2_streamoff+0x18/0x20
[videobuf2_core]
[2014-11-03 23:45:16] [<ffffffffa0cd932d>] uvc_queue_enable+0x5d/0xa0
[uvcvideo]
[2014-11-03 23:45:16] [<ffffffffa0cde249>]
uvc_video_enable+0x139/0x1a0 [uvcvideo]
[2014-11-03 23:45:16] [<ffffffffa0cdb406>]
uvc_v4l2_do_ioctl+0x1146/0x1630 [uvcvideo]
[2014-11-03 23:45:16] [<ffffffff81287c79>] ? __rb_insert_augmented+0xf9/0x1e0
[2014-11-03 23:45:16] [<ffffffff811358f0>] ? vma_compute_subtree_gap+0x40/0x40
[2014-11-03 23:45:16] [<ffffffffa0c8b5be>] video_usercopy+0x21e/0x5a0
[videodev]
[2014-11-03 23:45:16] [<ffffffffa0cda2c0>] ?
uvc_v4l2_set_streamparm.isra.7+0x190/0x190 [uvcvideo]
[2014-11-03 23:45:16] [<ffffffffa0cd983a>] uvc_v4l2_ioctl+0x2a/0x70 [uvcvideo]
[2014-11-03 23:45:16] [<ffffffffa0c877db>] v4l2_ioctl+0x11b/0x150 [videodev]
[2014-11-03 23:45:16] [<ffffffff81179568>] do_vfs_ioctl+0x2c8/0x4a0
[2014-11-03 23:45:16] [<ffffffff81137324>] ? SyS_mmap_pgoff+0xc4/0x250
[2014-11-03 23:45:16] [<ffffffff811797c1>] SyS_ioctl+0x81/0xa0
[2014-11-03 23:45:16] [<ffffffff814d6692>] system_call_fastpath+0x16/0x1b
[2014-11-03 23:45:16] ---[ end trace e8a5150c0c66afdc ]---

[Grozdan]

Post by Grozdan
Hi,
I'm running kernel 3.17.2 and I have a webcam which takes every 5
seconds a shot. The server on which it is running on is also crunching
for BOINC from 9pm to 9am. Whenever the server is under heavy CPU load
during crunch time, I often get the below messages. The webcam
continues to operate though, as if nothing happened
The PID below indicates that it's the capturing software fswebcam
triggering this. It never happened on and older kernel (3.11.10 for
example). Where should I look at? fswebcam or is this the video
subsystem at fault?
[2014-11-03 23:45:16] uvcvideo: Failed to submit URB 0 (-27).
[2014-11-03 23:45:16] ------------[ cut here ]------------
[2014-11-03 23:45:16] WARNING: CPU: 1 PID: 11864 at
drivers/media/v4l2-core/videobuf2-core.c:2144
__vb2_queue_cancel+0x116/0x180 [videobuf2_core]()
[2014-11-03 23:45:16] Modules linked in: nvidia_uvm(PO) fuse ip6t_rt
ip6table_filter ip6table_raw xt_pkttype xt_tcpudp xt_recent
xt_conntrack iptable_filter xt_CT iptable_raw nf_conntrack_ipv6
nf_defrag_ipv6 nf_conntrack_ipv4 nf_defrag_ipv4
nf_conntrack_netbios_ns nf_conntrack_broadcast nf_conntrack ip6_tables
ip_tables x_tables iscsi_ibft iscsi_boot_sysfs af_packet nvidia(PO)
joydev hid_generic usbhid drm hid uvcvideo videobuf2_vmalloc
videobuf2_memops videobuf2_core v4l2_common videodev media kvm_amd kvm
ppdev microcode serio_raw sp5100_tco pcspkr r8169 edac_core mii
snd_hda_codec_hdmi i2c_piix4 i2c_core snd_hda_intel snd_hda_controller
snd_hda_codec snd_hwdep snd_pcm snd_timer snd soundcore k10temp
acpi_cpufreq processor parport_pc parport asus_atk0110 thermal_sys
rtc_cmos hwmon tcp_vegas dm_mod xfs crc32c_generic
[2014-11-03 23:45:16] libcrc32c sd_mod crc_t10dif crct10dif_generic
sr_mod cdrom crct10dif_common ata_generic ohci_pci ahci ehci_pci
pata_atiixp ohci_hcd libahci xhci_hcd ehci_hcd libata usbcore
usb_common wmi button sg scsi_mod ipv6 autofs4
[2014-11-03 23:45:16] CPU: 1 PID: 11864 Comm: fswebcam Tainted: P
W O 3.17.2-positron #1
[2014-11-03 23:45:16] Hardware name: System manufacturer System
Product Name/M4A77T/USB3, BIOS 0601 11/29/2010
[2014-11-03 23:45:16] 0000000000000009 ffff8802920e7c00
ffffffff814d01af 0000000000000000
[2014-11-03 23:45:16] ffff8802920e7c38 ffffffff81049148
0000000000000000 ffff880320e7c2f0
[2014-11-03 23:45:16] 0000000000000000 ffff880320e7c0d8
ffff88031f406380 ffff8802920e7c48
[2014-11-03 23:45:16] [<ffffffff814d01af>] dump_stack+0x45/0x56
[2014-11-03 23:45:16] [<ffffffff81049148>] warn_slowpath_common+0x78/0xa0
[2014-11-03 23:45:16] [<ffffffff81049225>] warn_slowpath_null+0x15/0x20
[2014-11-03 23:45:16] [<ffffffffa0cc19f6>]
__vb2_queue_cancel+0x116/0x180 [videobuf2_core]
[2014-11-03 23:45:16] [<ffffffffa0cc1a76>]
vb2_internal_streamoff+0x16/0x60 [videobuf2_core]
[2014-11-03 23:45:16] [<ffffffffa0cc1ad8>] vb2_streamoff+0x18/0x20
[videobuf2_core]
[2014-11-03 23:45:16] [<ffffffffa0cd932d>] uvc_queue_enable+0x5d/0xa0
[uvcvideo]
[2014-11-03 23:45:16] [<ffffffffa0cde249>]
uvc_video_enable+0x139/0x1a0 [uvcvideo]
[2014-11-03 23:45:16] [<ffffffffa0cdb406>]
uvc_v4l2_do_ioctl+0x1146/0x1630 [uvcvideo]
[2014-11-03 23:45:16] [<ffffffff81287c79>] ? __rb_insert_augmented+0xf9/0x1e0
[2014-11-03 23:45:16] [<ffffffff811358f0>] ? vma_compute_subtree_gap+0x40/0x40
[2014-11-03 23:45:16] [<ffffffffa0c8b5be>] video_usercopy+0x21e/0x5a0
[videodev]
[2014-11-03 23:45:16] [<ffffffffa0cda2c0>] ?
uvc_v4l2_set_streamparm.isra.7+0x190/0x190 [uvcvideo]
[2014-11-03 23:45:16] [<ffffffffa0cd983a>] uvc_v4l2_ioctl+0x2a/0x70 [uvcvideo]
[2014-11-03 23:45:16] [<ffffffffa0c877db>] v4l2_ioctl+0x11b/0x150 [videodev]
[2014-11-03 23:45:16] [<ffffffff81179568>] do_vfs_ioctl+0x2c8/0x4a0
[2014-11-03 23:45:16] [<ffffffff81137324>] ? SyS_mmap_pgoff+0xc4/0x250
[2014-11-03 23:45:16] [<ffffffff811797c1>] SyS_ioctl+0x81/0xa0
[2014-11-03 23:45:16] [<ffffffff814d6692>] system_call_fastpath+0x16/0x1b
[2014-11-03 23:45:16] ---[ end trace e8a5150c0c66afdc ]---
--
Yours truly

Ping?