Public bug reported:
[92420.303133] ------------[ cut here ]------------
[92420.303141] WARNING: CPU: 2 PID: 259541 at
drivers/media/v4l2-core/v4l2-ioctl.c:1069 v4l_querycap+0x8f/0xa0 [videodev]
[92420.303141] Modules linked in: btrfs xor zstd_compress raid6_pq ufs qnx4
hfsplus hfs minix ntfs msdos jfs xfs gspca_zc3xx joydev snd_seq_dummy
iptable_mangle xt_CHECKSUM iptable_nat xt_MASQUERADE nf_nat nf_conntrack
nf_defrag_ipv6 nf_defrag_ipv4 libcrc32c xt_tcpudp bridge stp llc iptable_filter
bpfilter v4l2loopback(OE) binfmt_misc nls_iso8859_1 uvcvideo gspca_vc032x
gspca_main videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_common
videodev snd_usb_audio snd_usbmidi_lib mc snd_seq_midi snd_seq_midi_event
snd_rawmidi edac_mce_amd kvm_amd ccp snd_hda_codec_realtek snd_seq
snd_hda_codec_generic ledtrig_audio snd_hda_codec_hdmi snd_hda_intel kvm
snd_intel_dspcfg snd_hda_codec snd_hda_core snd_hwdep snd_seq_device snd_pcm
input_leds serio_raw k10temp fam15h_power snd_timer snd soundcore mac_hid
sch_fq_codel parport_pc ppdev lp parport ip_tables x_tables autofs4 uas
usb_storage dm_crypt amdgpu amd_iommu_v2 gpu_sched hid_generic usbhid hid
crct10dif_pclmul crc32_pclmul
[92420.303167] ghash_clmulni_intel radeon i2c_algo_bit ttm aesni_intel
drm_kms_helper crypto_simd syscopyarea cryptd sysfillrect sysimgblt glue_helper
fb_sys_fops ahci libahci i2c_piix4 drm r8169 realtek video
[92420.303174] CPU: 2 PID: 259541 Comm: teams Tainted: G W OE
5.4.0-29-lowlatency #33-Ubuntu
[92420.303175] Hardware name: Gigabyte Technology Co., Ltd. To be filled by
O.E.M./G1.Sniper A88X-CF, BIOS F7 01/08/2014
[92420.303182] RIP: 0010:v4l_querycap+0x8f/0xa0 [videodev]
[92420.303183] Code: 00 00 80 48 b9 00 00 20 00 00 00 20 00 48 0b 4b 54 21 d6
39 f2 75 13 48 89 4b 54 5b 41 5c 41 5d 41 5e 41 5f 5d c3 0f 0b eb d0 <0f> 0b 48
89 4b 54 5b 41 5c 41 5d 41 5e 41 5f 5d c3 0f 1f 44 00 00
[92420.303184] RSP: 0018:ffffb4aa44dd7c78 EFLAGS: 00010202
[92420.303186] RAX: 0000000000000000 RBX: ffffb4aa44dd7d88 RCX: 8520800185208001
[92420.303187] RDX: 0000000085008003 RSI: 0000000085008001 RDI: 0000000000000000
[92420.303188] RBP: ffffb4aa44dd7ca0 R08: 0000000000000000 R09: 0000000000ffff0a
[92420.303188] R10: 0000000000000000 R11: 0000000000000000 R12: ffff994f4e421000
[92420.303189] R13: ffff994f4de6bf00 R14: ffff994f4c191940 R15: ffffffffc0f2e360
[92420.303191] FS: 00007f47f2ffd700(0000) GS:ffff994f5fb00000(0000)
knlGS:0000000000000000
[92420.303192] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[92420.303193] CR2: 00007f482c0e1000 CR3: 00000003d0084000 CR4: 00000000000406e0
[92420.303194] Call Trace:
[92420.303201] __video_do_ioctl+0x1a7/0x410 [videodev]
[92420.303204] ? default_send_IPI_single+0x20/0x40
[92420.303206] ? resched_curr+0x62/0xe0
[92420.303213] video_usercopy+0x2ad/0x690 [videodev]
[92420.303220] ? v4l_s_fmt+0x670/0x670 [videodev]
[92420.303224] ? wake_up_q+0x40/0x70
[92420.303230] video_ioctl2+0x15/0x20 [videodev]
[92420.303237] v4l2_ioctl+0x4c/0x60 [videodev]
[92420.303238] do_vfs_ioctl+0x405/0x660
[92420.303240] ? __fget+0x77/0xa0
[92420.303242] ksys_ioctl+0x67/0x90
[92420.303244] __x64_sys_ioctl+0x1a/0x20
[92420.303246] do_syscall_64+0x57/0x190
[92420.303248] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[92420.303249] RIP: 0033:0x7f489773737b
[92420.303251] Code: 0f 1e fa 48 8b 05 15 3b 0d 00 64 c7 00 26 00 00 00 48 c7
c0 ff ff ff ff c3 66 0f 1f 44 00 00 f3 0f 1e fa b8 10 00 00 00 0f 05 <48> 3d 01
f0 ff ff 73 01 c3 48 8b 0d e5 3a 0d 00 f7 d8 64 89 01 48
[92420.303252] RSP: 002b:00007f47f2ff77e8 EFLAGS: 00000246 ORIG_RAX:
0000000000000010
[92420.303254] RAX: ffffffffffffffda RBX: 00007f4824026900 RCX: 00007f489773737b
[92420.303255] RDX: 00007f47f2ff78b0 RSI: ffffffff80685600 RDI: 0000000000000046
[92420.303256] RBP: ffffffff80685600 R08: 0000000000000000 R09: 00005645ec03ee68
[92420.303257] R10: 0000000000000048 R11: 0000000000000246 R12: 0000000000000046
[92420.303258] R13: 00007f47f2ff78b0 R14: 0000000000000015 R15: 00007f485b666039
[92420.303260] ---[ end trace 6e9a5041142fdaab ]---
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-lowlatency 5.4.0.29.34
ProcVersionSignature: Ubuntu 5.4.0-29.33-lowlatency 5.4.30
Uname: Linux 5.4.0-29-lowlatency x86_64
ApportVersion: 2.20.11-0ubuntu27
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Fri May 15 12:52:50 2020
HibernationDevice: RESUME=UUID=2ac5f511-9e86-402d-b41b-405dabdb7861
InstallationDate: Installed on 2014-04-14 (2222 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Beta amd64 (20140326)
IwConfig:
lo no wireless extensions.
eth0 no wireless extensions.
lxcbr0 no wireless extensions.
MachineType: Gigabyte Technology Co., Ltd. To be filled by O.E.M.
ProcEnviron:
TERM=screen-256color-bce
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=de_DE.UTF-8
SHELL=/bin/bash
ProcFB: 0 radeondrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.4.0-29-lowlatency
root=/dev/mapper/ubuntu--vg-root ro quiet splash
RelatedPackageVersions:
linux-restricted-modules-5.4.0-29-lowlatency N/A
linux-backports-modules-5.4.0-29-lowlatency N/A
linux-firmware 1.187
RfKill:
SourcePackage: linux
UpgradeStatus: Upgraded to focal on 2020-05-08 (6 days ago)
dmi.bios.date: 01/08/2014
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: F7
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: G1.Sniper A88X-CF
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: x.x
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvrF7:bd01/08/2014:svnGigabyteTechnologyCo.,Ltd.:pnTobefilledbyO.E.M.:pvrTobefilledbyO.E.M.:rvnGigabyteTechnologyCo.,Ltd.:rnG1.SniperA88X-CF:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.family: To be filled by O.E.M.
dmi.product.name: To be filled by O.E.M.
dmi.product.sku: To be filled by O.E.M.
dmi.product.version: To be filled by O.E.M.
dmi.sys.vendor: Gigabyte Technology Co., Ltd.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Confirmed
** Tags: amd64 apport-bug focal
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https://bugs.launchpad.net/bugs/1878899
Title:
Call trace from __video_do_ioctl
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