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From: Wojtek Zabolotny To: Pavel Machek , "wzabolot@elektron.elka.pw.edu.pl" Cc: LKML , bernie@plugable.com, linux-fbdev@vger.kernel.org, airlied@redhat.com, sean@poorly.run, dri-devel@lists.freedesktop.org References: <31dc20a5-66f4-051c-dfec-73924b00c0f8@elektron.elka.pw.edu.pl> <20181125230722.GD30242@amd> <2ed5f5c1-80a1-0790-a6f8-64d84284e9df@elka.pw.edu.pl> Openpgp: preference=signencrypt Autocrypt: addr=W.Zabolotny@elka.pw.edu.pl; prefer-encrypt=mutual; keydata= mQQNBFRVBfcBIADx6Hopt8KdGyDbCXQUZKa4JqFdIHy0k/njOq4S+TE7CrPzBtXwPFSHKqQu wm4VcFG8VPBDaMGFxgvLYkWQR/nDNT3gG+s5o42IbyLpH1r0CHMzNqMStdAWSzO/HSZIYGl6 FPcN5XkEVonDQY+61LyEY6Dkb8STI0/7lnFt6H9eaD6rPyA8COFtQcr7c2oyrEWBXUEIsUUT Xw52Z2VZkCgKpViryNxO6+aLCph3I26MkTcEysV+rc7BBRuVOHeUodSAuGdrsvTfR+aJN9Az XbWqsx0EcLJ0veLhL0tTnldzXuvd4wtqNh5FHfFa0uZt88CsBFppMQP5ayCG08IeOcCMksl/ sTggqBB+aBgRgj72dPRs5sdKEfeqGsFBLEEunTN6iyQx/b7SKu7+T4WBpNfh8e7A8sTT2+w+ RWImf93w3ypJORINn3DM9q8oDYx+xqIbEDniBGZQCcwEkuDQR3kIPUeoh3J4upFEcno2NlQ4 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19iQCYjN8On8eNzawBM4TfOAIRKEaPWL53v5nyPMRwlH2KN0XJirN/ZgH+rn2JpL3wHwE93D t/7DJ/xCMhFJm8S/2GTRxiL+vPIN+lsPi86zTU7YBJrRKanogY5K1nxLpTNaHNykq7W/VDue /Xm2n+tTR7u0C80Uuw== Message-ID: Date: Sun, 3 Mar 2019 21:39:11 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.5.1 MIME-Version: 1.0 In-Reply-To: <2ed5f5c1-80a1-0790-a6f8-64d84284e9df@elka.pw.edu.pl> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Content-Language: pl-PL Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, A few more details. In the current configuration, inspite of kernel warni= ngs the system is working, and I was able to configure both monitors (LCD= in my laptop and external LCD monitor connected to UDL-165). I have followed the procedure described in https://wiki.archlinux.org/ind= ex.php/DisplayLink#USB_2.0_DL-1x5,_DL-1x0_Devices # xrandr --listproviders Providers: number : 2 Provider 0: id: 0x43 cap: 0xf, Source Output, Sink Output, Source Offload= , Sink Offload crtcs: 2 outputs: 2 associated providers: 1 name:modesetti= ng Provider 1: id: 0x17a cap: 0x2, Sink Output crtcs: 1 outputs: 1 associate= d providers: 1 name:modesetting # xrandr --setprovideroutputsource 1 0 Afterwards I have configured screens in my Mate desktop using GUI. However, the CPU occupancy is high and I get the following messages regar= ding the softmmu operation: [=C2=A0 212.020300] swiotlb_tbl_map_single: 10 callbacks suppressed [=C2=A0 212.020309] udl 4-1.2:1.0: swiotlb buffer is full (sz: 999424 byt= es) [=C2=A0 212.020315] udl 4-1.2:1.0: DMA: Out of SW-IOMMU space for 999424 = bytes [=C2=A0 278.355981] udl 4-1.2:1.0: swiotlb buffer is full (sz: 786432 byt= es) [=C2=A0 278.355988] udl 4-1.2:1.0: DMA: Out of SW-IOMMU space for 786432 = bytes [=C2=A0 298.657084] traps: mate-notificati[1944] trap int3 ip:7f1526cbdca= 5 sp:7fffc1f65f00 error:0 in libglib-2.0.so.0.5800.3[7f1526c85000+7e000] [=C2=A0 316.132315] udl 4-1.2:1.0: swiotlb buffer is full (sz: 1019904 by= tes) [=C2=A0 316.132319] udl 4-1.2:1.0: DMA: Out of SW-IOMMU space for 1019904= bytes =46rom time to time I also get the messages about the drm_get_object_put Below are all the related messages. When I tried to disconnect the UDL-16= 5 from USB socket, the whole system crashed immediately. [=C2=A0 117.364046] usb 1-1.3: reset full-speed USB device number 3 using= ehci-pci [=C2=A0 134.269573] [drm] vendor descriptor length:22 data:22 5f 01 00 20= 05 00 01 03 04 02 [=C2=A0 134.436703] udl 4-1.2:1.0: fb1: udldrmfb frame buffer device [=C2=A0 134.436735] [drm] Initialized udl 0.0.1 20120220 for 4-1.2:1.0 on= minor 2 [=C2=A0 134.436742] [drm] Initialized udl on minor 2 [=C2=A0 134.436849] usbcore: registered new interface driver udl [=C2=A0 136.095399] WARNING: CPU: 4 PID: 920 at drivers/gpu/drm/drm_gem.c= :893 drm_gem_object_put+0x33/0x40 [drm] [=C2=A0 136.095403] Modules linked in: udl rfcomm ctr ccm cpufreq_userspa= ce cpufreq_conservative cpufreq_powersave bnep nft_counter xt_owner xt_st= ate xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 libcrc32c nft_compat nf_tables nfnetlink binfmt_misc uvcvideo arc4 iwldvm= mac80211 videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_com= mon btusb btrtl btbcm snd_hda_codec_realtek videodev snd_hda_codec_generic btintel media bluetooth nvidia_drm(POE) iwlwifi i91= 5 drbg nvidia_modeset(POE) ansi_cprng intel_rapl x86_pkg_temp_thermal int= el_powerclamp ecdh_generic snd_hda_intel coretemp snd_hda_codec kvm_intel snd_hda_core drm_kms_helper snd_hwdep snd_pcm_oss= dell_laptop snd_mixer_oss dell_wmi dell_smbios dcdbas drm snd_pcm kvm cf= g80211 snd_timer snd joydev soundcore serio_raw sparse_keymap pcspkr [=C2=A0 136.095498]=C2=A0 mei_me mei i2c_algo_bit rfkill irqbypass iTCO_w= dt iTCO_vendor_support wmi_bmof dell_smm_hwmon evdev dell_wmi_descriptor = wmi sg intel_cstate intel_uncore pcc_cpufreq intel_rapl_perf video dell_smo8800 button battery ac nvidia(POE) ipmi_devintf ipmi_msghan= dler parport_pc ppdev lp parport ip_tables x_tables autofs4 ext4 crc16 mb= cache jbd2 crc32c_generic fscrypto ecb algif_skcipher af_alg dm_crypt dm_mod sr_mod cdrom sd_mod crct10dif_pclmul crc32_pclmul = crc32c_intel ghash_clmulni_intel pcbc ahci libahci aesni_intel xhci_pci x= hci_hcd ehci_pci libata ehci_hcd aes_x86_64 realtek crypto_simd usbcore cryptd psmouse scsi_mod glue_helper r8169 i2c_i801 li= bphy lpc_ich usb_common thermal [=C2=A0 136.095604] CPU: 4 PID: 920 Comm: Xorg Tainted: P=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 OE=C2=A0=C2=A0=C2=A0=C2=A0 4.1= 9.0-2-amd64 #1 Debian 4.19.16-1 [=C2=A0 136.095607] Hardware name: Dell Inc.=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0 Dell System Vostro 3750/0VP036, BIOS A14 09/26/2= 012 [=C2=A0 136.095639] RIP: 0010:drm_gem_object_put+0x33/0x40 [drm] [=C2=A0 136.095644] Code: 28 53 48 8b 47 08 48 8b 40 68 48 a9 f8 ff ff ff= 74 18 48 89 fb e8 ed 1f e6 dd 84 c0 75 02 5b c3 48 89 df 5b e9 0e fc ff = ff c3 <0f> 0b eb e4 66 0f 1f 84 00 00 00 00 00 66 66 66 66 90 48 85 ff 74 [=C2=A0 136.095647] RSP: 0018:ffffba82c25f7d10 EFLAGS: 00010246 [=C2=A0 136.095652] RAX: 0000000000000000 RBX: ffff97fd7f4eb000 RCX: 0000= 000000000000 [=C2=A0 136.095654] RDX: ffffffffffffffff RSI: 0000000000000000 RDI: ffff= 97fd7f4eb000 [=C2=A0 136.095657] RBP: ffff97fda71cb820 R08: ffff97fd6893bd10 R09: 0000= 0000010ffff0 [=C2=A0 136.095659] R10: 0000000000100004 R11: 0000000000000000 R12: 0000= 000000000000 [=C2=A0 136.095662] R13: ffffba82c25f7dd0 R14: ffffba82c25f7dc8 R15: ffff= 97fd8de12e00 [=C2=A0 136.095666] FS:=C2=A0 00007f57d6cfaa80(0000) GS:ffff97fdae300000(= 0000) knlGS:0000000000000000 [=C2=A0 136.095670] CS:=C2=A0 0010 DS: 0000 ES: 0000 CR0: 000000008005003= 3 [=C2=A0 136.095672] CR2: 00007f57bdeaa630 CR3: 0000000416a9e002 CR4: 0000= 0000000606e0 [=C2=A0 136.095675] Call Trace: [=C2=A0 136.095695]=C2=A0 udl_gem_mmap+0x64/0xa0 [udl] [=C2=A0 136.095743]=C2=A0 ? drm_mode_create_dumb_ioctl+0x10/0x10 [drm] [=C2=A0 136.095784]=C2=A0 drm_ioctl_kernel+0xa1/0xf0 [drm] [=C2=A0 136.095818]=C2=A0 drm_ioctl+0x206/0x3a0 [drm] [=C2=A0 136.095853]=C2=A0 ? drm_mode_create_dumb_ioctl+0x10/0x10 [drm] [=C2=A0 136.095861]=C2=A0 ? datagram_poll+0x25/0xf0 [=C2=A0 136.095866]=C2=A0 ? sock_poll+0x83/0xb0 [=C2=A0 136.095872]=C2=A0 ? ep_item_poll.isra.16+0x40/0xc0 [=C2=A0 136.095877]=C2=A0 ? sock_poll+0x83/0xb0 [=C2=A0 136.095883]=C2=A0 do_vfs_ioctl+0xa4/0x630 [=C2=A0 136.095889]=C2=A0 ? __x64_sys_epoll_ctl+0xe7/0x550 [=C2=A0 136.095894]=C2=A0 ksys_ioctl+0x60/0x90 [=C2=A0 136.095900]=C2=A0 __x64_sys_ioctl+0x16/0x20 [=C2=A0 136.095908]=C2=A0 do_syscall_64+0x53/0x100 [=C2=A0 136.095914]=C2=A0 entry_SYSCALL_64_after_hwframe+0x44/0xa9 [=C2=A0 136.095920] RIP: 0033:0x7f57d742b757 [=C2=A0 136.095924] Code: 00 00 90 48 8b 05 39 a7 0c 00 64 c7 00 26 00 00= 00 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 b8 10 00 00 00 = 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 09 a7 0c 00 f7 d8 64 89 01 48 [=C2=A0 136.095927] RSP: 002b:00007fff80edf058 EFLAGS: 00003246 ORIG_RAX:= 0000000000000010 [=C2=A0 136.095931] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000= 7f57d742b757 [=C2=A0 136.095934] RDX: 00007fff80edf090 RSI: 00000000c01064b3 RDI: 0000= 000000000038 [=C2=A0 136.095936] RBP: 00007fff80edf090 R08: 0000000000000000 R09: 0000= 555ab4d09270 [=C2=A0 136.095939] R10: 00007fff80edf03c R11: 0000000000003246 R12: 0000= 0000c01064b3 [=C2=A0 136.095941] R13: 0000000000000038 R14: 0000555ab4ae9220 R15: 0000= 000000000001 [=C2=A0 136.095947] ---[ end trace f558f2f0c6dcf780 ]--- [=C2=A0 136.097883] WARNING: CPU: 4 PID: 920 at drivers/gpu/drm/drm_gem.c= :893 drm_gem_object_put+0x33/0x40 [drm] [=C2=A0 136.097885] Modules linked in: udl rfcomm ctr ccm cpufreq_userspa= ce cpufreq_conservative cpufreq_powersave bnep nft_counter xt_owner xt_st= ate xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 libcrc32c nft_compat nf_tables nfnetlink binfmt_misc uvcvideo arc4 iwldvm= mac80211 videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_com= mon btusb btrtl btbcm snd_hda_codec_realtek videodev snd_hda_codec_generic btintel media bluetooth nvidia_drm(POE) iwlwifi i91= 5 drbg nvidia_modeset(POE) ansi_cprng intel_rapl x86_pkg_temp_thermal int= el_powerclamp ecdh_generic snd_hda_intel coretemp snd_hda_codec kvm_intel snd_hda_core drm_kms_helper snd_hwdep snd_pcm_oss= dell_laptop snd_mixer_oss dell_wmi dell_smbios dcdbas drm snd_pcm kvm cf= g80211 snd_timer snd joydev soundcore serio_raw sparse_keymap pcspkr [=C2=A0 136.097961]=C2=A0 mei_me mei i2c_algo_bit rfkill irqbypass iTCO_w= dt iTCO_vendor_support wmi_bmof dell_smm_hwmon evdev dell_wmi_descriptor = wmi sg intel_cstate intel_uncore pcc_cpufreq intel_rapl_perf video dell_smo8800 button battery ac nvidia(POE) ipmi_devintf ipmi_msghan= dler parport_pc ppdev lp parport ip_tables x_tables autofs4 ext4 crc16 mb= cache jbd2 crc32c_generic fscrypto ecb algif_skcipher af_alg dm_crypt dm_mod sr_mod cdrom sd_mod crct10dif_pclmul crc32_pclmul = crc32c_intel ghash_clmulni_intel pcbc ahci libahci aesni_intel xhci_pci x= hci_hcd ehci_pci libata ehci_hcd aes_x86_64 realtek crypto_simd usbcore cryptd psmouse scsi_mod glue_helper r8169 i2c_i801 li= bphy lpc_ich usb_common thermal [=C2=A0 136.098045] CPU: 4 PID: 920 Comm: Xorg Tainted: P=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0 W=C2=A0 OE=C2=A0=C2=A0=C2=A0=C2=A0 4.19.0-2-amd6= 4 #1 Debian 4.19.16-1 [=C2=A0 136.098047] Hardware name: Dell Inc.=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0 Dell System Vostro 3750/0VP036, BIOS A14 09/26/2= 012 [=C2=A0 136.098074] RIP: 0010:drm_gem_object_put+0x33/0x40 [drm] [=C2=A0 136.098077] Code: 28 53 48 8b 47 08 48 8b 40 68 48 a9 f8 ff ff ff= 74 18 48 89 fb e8 ed 1f e6 dd 84 c0 75 02 5b c3 48 89 df 5b e9 0e fc ff = ff c3 <0f> 0b eb e4 66 0f 1f 84 00 00 00 00 00 66 66 66 66 90 48 85 ff 74 [=C2=A0 136.098079] RSP: 0018:ffffba82c25f7d10 EFLAGS: 00010246 [=C2=A0 136.098083] RAX: 0000000000000000 RBX: ffff97fd7f4e8200 RCX: 0000= 000000000000 [=C2=A0 136.098085] RDX: ffffffffffffffff RSI: 0000000000000000 RDI: ffff= 97fd7f4e8200 [=C2=A0 136.098088] RBP: ffff97fda71cb820 R08: ffff97fd6893bd10 R09: 0000= 0000010ffff0 [=C2=A0 136.098090] R10: 0000000000100304 R11: 0000000000000000 R12: 0000= 000000000000 [=C2=A0 136.098092] R13: ffffba82c25f7dd0 R14: ffffba82c25f7dc8 R15: ffff= 97fd8de12e00 [=C2=A0 136.098096] FS:=C2=A0 00007f57d6cfaa80(0000) GS:ffff97fdae300000(= 0000) knlGS:0000000000000000 [=C2=A0 136.098098] CS:=C2=A0 0010 DS: 0000 ES: 0000 CR0: 000000008005003= 3 [=C2=A0 136.098100] CR2: 00007f57bdeaa630 CR3: 0000000416a9e002 CR4: 0000= 0000000606e0 [=C2=A0 136.098102] Call Trace: [=C2=A0 136.098112]=C2=A0 udl_gem_mmap+0x64/0xa0 [udl] [=C2=A0 136.098143]=C2=A0 ? drm_mode_create_dumb_ioctl+0x10/0x10 [drm] [=C2=A0 136.098171]=C2=A0 drm_ioctl_kernel+0xa1/0xf0 [drm] [=C2=A0 136.098200]=C2=A0 drm_ioctl+0x206/0x3a0 [drm] [=C2=A0 136.098233]=C2=A0 ? drm_mode_create_dumb_ioctl+0x10/0x10 [drm] [=C2=A0 136.098241]=C2=A0 ? do_mmap+0x3c7/0x5a0 [=C2=A0 136.098247]=C2=A0 do_vfs_ioctl+0xa4/0x630 [=C2=A0 136.098252]=C2=A0 ksys_ioctl+0x60/0x90 [=C2=A0 136.098258]=C2=A0 __x64_sys_ioctl+0x16/0x20 [=C2=A0 136.098263]=C2=A0 do_syscall_64+0x53/0x100 [=C2=A0 136.098268]=C2=A0 entry_SYSCALL_64_after_hwframe+0x44/0xa9 [=C2=A0 136.098271] RIP: 0033:0x7f57d742b757 [=C2=A0 136.098274] Code: 00 00 90 48 8b 05 39 a7 0c 00 64 c7 00 26 00 00= 00 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 b8 10 00 00 00 = 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 09 a7 0c 00 f7 d8 64 89 01 48 [=C2=A0 136.098276] RSP: 002b:00007fff80edf058 EFLAGS: 00003246 ORIG_RAX:= 0000000000000010 [=C2=A0 136.098280] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000= 7f57d742b757 [=C2=A0 136.098282] RDX: 00007fff80edf090 RSI: 00000000c01064b3 RDI: 0000= 000000000038 [=C2=A0 136.098284] RBP: 00007fff80edf090 R08: 0000000000000038 R09: 0000= 000100000000 [=C2=A0 136.098287] R10: 0000000000000001 R11: 0000000000003246 R12: 0000= 0000c01064b3 [=C2=A0 136.098289] R13: 0000000000000038 R14: 0000555ab4ae9220 R15: 0000= 000000000001 [=C2=A0 136.098293] ---[ end trace f558f2f0c6dcf781 ]--- [=C2=A0 212.020300] swiotlb_tbl_map_single: 10 callbacks suppressed [=C2=A0 212.020309] udl 4-1.2:1.0: swiotlb buffer is full (sz: 999424 byt= es) [=C2=A0 212.020315] udl 4-1.2:1.0: DMA: Out of SW-IOMMU space for 999424 = bytes [=C2=A0 278.355981] udl 4-1.2:1.0: swiotlb buffer is full (sz: 786432 byt= es) [=C2=A0 278.355988] udl 4-1.2:1.0: DMA: Out of SW-IOMMU space for 786432 = bytes [=C2=A0 298.657084] traps: mate-notificati[1944] trap int3 ip:7f1526cbdca= 5 sp:7fffc1f65f00 error:0 in libglib-2.0.so.0.5800.3[7f1526c85000+7e000] [=C2=A0 316.132315] udl 4-1.2:1.0: swiotlb buffer is full (sz: 1019904 by= tes) [=C2=A0 316.132319] udl 4-1.2:1.0: DMA: Out of SW-IOMMU space for 1019904= bytes [=C2=A0 316.132436] WARNING: CPU: 4 PID: 920 at drivers/gpu/drm/drm_gem.c= :893 drm_gem_object_put+0x33/0x40 [drm] [=C2=A0 316.132437] Modules linked in: udl rfcomm ctr ccm cpufreq_userspa= ce cpufreq_conservative cpufreq_powersave bnep nft_counter xt_owner xt_st= ate xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 libcrc32c nft_compat nf_tables nfnetlink binfmt_misc uvcvideo arc4 iwldvm= mac80211 videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_com= mon btusb btrtl btbcm snd_hda_codec_realtek videodev snd_hda_codec_generic btintel media bluetooth nvidia_drm(POE) iwlwifi i91= 5 drbg nvidia_modeset(POE) ansi_cprng intel_rapl x86_pkg_temp_thermal int= el_powerclamp ecdh_generic snd_hda_intel coretemp snd_hda_codec kvm_intel snd_hda_core drm_kms_helper snd_hwdep snd_pcm_oss= dell_laptop snd_mixer_oss dell_wmi dell_smbios dcdbas drm snd_pcm kvm cf= g80211 snd_timer snd joydev soundcore serio_raw sparse_keymap pcspkr [=C2=A0 316.132475]=C2=A0 mei_me mei i2c_algo_bit rfkill irqbypass iTCO_w= dt iTCO_vendor_support wmi_bmof dell_smm_hwmon evdev dell_wmi_descriptor = wmi sg intel_cstate intel_uncore pcc_cpufreq intel_rapl_perf video dell_smo8800 button battery ac nvidia(POE) ipmi_devintf ipmi_msghan= dler parport_pc ppdev lp parport ip_tables x_tables autofs4 ext4 crc16 mb= cache jbd2 crc32c_generic fscrypto ecb algif_skcipher af_alg dm_crypt dm_mod sr_mod cdrom sd_mod crct10dif_pclmul crc32_pclmul = crc32c_intel ghash_clmulni_intel pcbc ahci libahci aesni_intel xhci_pci x= hci_hcd ehci_pci libata ehci_hcd aes_x86_64 realtek crypto_simd usbcore cryptd psmouse scsi_mod glue_helper r8169 i2c_i801 li= bphy lpc_ich usb_common thermal [=C2=A0 316.132518] CPU: 4 PID: 920 Comm: Xorg Tainted: P=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0 W=C2=A0 OE=C2=A0=C2=A0=C2=A0=C2=A0 4.19.0-2-amd6= 4 #1 Debian 4.19.16-1 [=C2=A0 316.132519] Hardware name: Dell Inc.=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0 Dell System Vostro 3750/0VP036, BIOS A14 09/26/2= 012 [=C2=A0 316.132530] RIP: 0010:drm_gem_object_put+0x33/0x40 [drm] [=C2=A0 316.132532] Code: 28 53 48 8b 47 08 48 8b 40 68 48 a9 f8 ff ff ff= 74 18 48 89 fb e8 ed 1f e6 dd 84 c0 75 02 5b c3 48 89 df 5b e9 0e fc ff = ff c3 <0f> 0b eb e4 66 0f 1f 84 00 00 00 00 00 66 66 66 66 90 48 85 ff 74 [=C2=A0 316.132533] RSP: 0018:ffffba82c25f7d10 EFLAGS: 00010246 [=C2=A0 316.132535] RAX: 0000000000000000 RBX: ffff97fd7f4eac00 RCX: 0000= 000000000000 [=C2=A0 316.132536] RDX: ffffffffffffffff RSI: 0000000000000000 RDI: ffff= 97fd7f4eac00 [=C2=A0 316.132537] RBP: ffff97fda71cb820 R08: ffff97fd6893bd10 R09: 0000= 0000010ffff0 [=C2=A0 316.132538] R10: 0000000000100604 R11: 0000000000000000 R12: 0000= 000000000000 [=C2=A0 316.132539] R13: ffffba82c25f7dd0 R14: ffffba82c25f7dc8 R15: ffff= 97fd8de12e00 [=C2=A0 316.132540] FS:=C2=A0 00007f57d6cfaa80(0000) GS:ffff97fdae300000(= 0000) knlGS:0000000000000000 [=C2=A0 316.132541] CS:=C2=A0 0010 DS: 0000 ES: 0000 CR0: 000000008005003= 3 [=C2=A0 316.132543] CR2: 00007f57cd5ed00c CR3: 0000000416a9e004 CR4: 0000= 0000000606e0 [=C2=A0 316.132544] Call Trace: [=C2=A0 316.132550]=C2=A0 udl_gem_mmap+0x64/0xa0 [udl] [=C2=A0 316.132564]=C2=A0 ? drm_mode_create_dumb_ioctl+0x10/0x10 [drm] [=C2=A0 316.132575]=C2=A0 drm_ioctl_kernel+0xa1/0xf0 [drm] [=C2=A0 316.132588]=C2=A0 drm_ioctl+0x206/0x3a0 [drm] [=C2=A0 316.132601]=C2=A0 ? drm_mode_create_dumb_ioctl+0x10/0x10 [drm] [=C2=A0 316.132604]=C2=A0 ? fsnotify+0x34b/0x560 [=C2=A0 316.132608]=C2=A0 do_vfs_ioctl+0xa4/0x630 [=C2=A0 316.132610]=C2=A0 ksys_ioctl+0x60/0x90 [=C2=A0 316.132614]=C2=A0 ? ksys_write+0x9c/0xb0 [=C2=A0 316.132616]=C2=A0 __x64_sys_ioctl+0x16/0x20 [=C2=A0 316.132619]=C2=A0 do_syscall_64+0x53/0x100 [=C2=A0 316.132621]=C2=A0 entry_SYSCALL_64_after_hwframe+0x44/0xa9 [=C2=A0 316.132623] RIP: 0033:0x7f57d742b757 [=C2=A0 316.132625] Code: 00 00 90 48 8b 05 39 a7 0c 00 64 c7 00 26 00 00= 00 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 b8 10 00 00 00 = 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 09 a7 0c 00 f7 d8 64 89 01 48 [=C2=A0 316.132626] RSP: 002b:00007fff80edfc58 EFLAGS: 00003246 ORIG_RAX:= 0000000000000010 [=C2=A0 316.132628] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000= 7f57d742b757 [=C2=A0 316.132628] RDX: 00007fff80edfc90 RSI: 00000000c01064b3 RDI: 0000= 000000000038 [=C2=A0 316.132629] RBP: 00007fff80edfc90 R08: 0000555ab4c906f0 R09: 0000= 000000000006 [=C2=A0 316.132630] R10: 0000555ab3ff3010 R11: 0000000000003246 R12: 0000= 0000c01064b3 [=C2=A0 316.132631] R13: 0000000000000038 R14: 0000555ab4c91f80 R15: 0000= 555ab4a03cc0 [=C2=A0 316.132633] ---[ end trace f558f2f0c6dcf782 ]--- [=C2=A0 335.726489] WARNING: CPU: 1 PID: 920 at drivers/gpu/drm/drm_gem.c= :893 drm_gem_object_put+0x33/0x40 [drm] [=C2=A0 335.726494] Modules linked in: udl rfcomm ctr ccm cpufreq_userspa= ce cpufreq_conservative cpufreq_powersave bnep nft_counter xt_owner xt_st= ate xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 libcrc32c nft_compat nf_tables nfnetlink binfmt_misc uvcvideo arc4 iwldvm= mac80211 videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_com= mon btusb btrtl btbcm snd_hda_codec_realtek videodev snd_hda_codec_generic btintel media bluetooth nvidia_drm(POE) iwlwifi i91= 5 drbg nvidia_modeset(POE) ansi_cprng intel_rapl x86_pkg_temp_thermal int= el_powerclamp ecdh_generic snd_hda_intel coretemp snd_hda_codec kvm_intel snd_hda_core drm_kms_helper snd_hwdep snd_pcm_oss= dell_laptop snd_mixer_oss dell_wmi dell_smbios dcdbas drm snd_pcm kvm cf= g80211 snd_timer snd joydev soundcore serio_raw sparse_keymap pcspkr [=C2=A0 335.726589]=C2=A0 mei_me mei i2c_algo_bit rfkill irqbypass iTCO_w= dt iTCO_vendor_support wmi_bmof dell_smm_hwmon evdev dell_wmi_descriptor = wmi sg intel_cstate intel_uncore pcc_cpufreq intel_rapl_perf video dell_smo8800 button battery ac nvidia(POE) ipmi_devintf ipmi_msghan= dler parport_pc ppdev lp parport ip_tables x_tables autofs4 ext4 crc16 mb= cache jbd2 crc32c_generic fscrypto ecb algif_skcipher af_alg dm_crypt dm_mod sr_mod cdrom sd_mod crct10dif_pclmul crc32_pclmul = crc32c_intel ghash_clmulni_intel pcbc ahci libahci aesni_intel xhci_pci x= hci_hcd ehci_pci libata ehci_hcd aes_x86_64 realtek crypto_simd usbcore cryptd psmouse scsi_mod glue_helper r8169 i2c_i801 li= bphy lpc_ich usb_common thermal [=C2=A0 335.726697] CPU: 1 PID: 920 Comm: Xorg Tainted: P=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0 W=C2=A0 OE=C2=A0=C2=A0=C2=A0=C2=A0 4.19.0-2-amd6= 4 #1 Debian 4.19.16-1 [=C2=A0 335.726700] Hardware name: Dell Inc.=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0 Dell System Vostro 3750/0VP036, BIOS A14 09/26/2= 012 [=C2=A0 335.726732] RIP: 0010:drm_gem_object_put+0x33/0x40 [drm] [=C2=A0 335.726737] Code: 28 53 48 8b 47 08 48 8b 40 68 48 a9 f8 ff ff ff= 74 18 48 89 fb e8 ed 1f e6 dd 84 c0 75 02 5b c3 48 89 df 5b e9 0e fc ff = ff c3 <0f> 0b eb e4 66 0f 1f 84 00 00 00 00 00 66 66 66 66 90 48 85 ff 74 [=C2=A0 335.726740] RSP: 0018:ffffba82c25f7d10 EFLAGS: 00010246 [=C2=A0 335.726744] RAX: 0000000000000000 RBX: ffff97fda60f6e00 RCX: 0000= 000000000000 [=C2=A0 335.726747] RDX: ffffffffffffffff RSI: 0000000000000000 RDI: ffff= 97fda60f6e00 [=C2=A0 335.726750] RBP: ffff97fda71cb820 R08: ffff97fd6893bd10 R09: 0000= 0000010ffff0 [=C2=A0 335.726752] R10: 0000000000100604 R11: 0000000000000000 R12: 0000= 000000000000 [=C2=A0 335.726755] R13: ffffba82c25f7dd0 R14: ffffba82c25f7dc8 R15: ffff= 97fd8de12e00 [=C2=A0 335.726759] FS:=C2=A0 00007f57d6cfaa80(0000) GS:ffff97fdae240000(= 0000) knlGS:0000000000000000 [=C2=A0 335.726762] CS:=C2=A0 0010 DS: 0000 ES: 0000 CR0: 000000008005003= 3 [=C2=A0 335.726765] CR2: 00007f57cd5a3004 CR3: 0000000416a9e005 CR4: 0000= 0000000606e0 [=C2=A0 335.726768] Call Trace: [=C2=A0 335.726786]=C2=A0 udl_gem_mmap+0x64/0xa0 [udl] [=C2=A0 335.726823]=C2=A0 ? drm_mode_create_dumb_ioctl+0x10/0x10 [drm] [=C2=A0 335.726854]=C2=A0 drm_ioctl_kernel+0xa1/0xf0 [drm] [=C2=A0 335.726888]=C2=A0 drm_ioctl+0x206/0x3a0 [drm] [=C2=A0 335.726923]=C2=A0 ? drm_mode_create_dumb_ioctl+0x10/0x10 [drm] [=C2=A0 335.726934]=C2=A0 ? __set_current_blocked+0x3d/0x60 [=C2=A0 335.726939]=C2=A0 ? signal_setup_done+0x94/0xb0 [=C2=A0 335.726947]=C2=A0 ? __fpu__restore_sig+0x90/0x460 [=C2=A0 335.726956]=C2=A0 do_vfs_ioctl+0xa4/0x630 [=C2=A0 335.726967]=C2=A0 ? _copy_from_user+0x37/0x60 [=C2=A0 335.726974]=C2=A0 ksys_ioctl+0x60/0x90 [=C2=A0 335.726981]=C2=A0 __x64_sys_ioctl+0x16/0x20 [=C2=A0 335.726991]=C2=A0 do_syscall_64+0x53/0x100 [=C2=A0 335.727000]=C2=A0 entry_SYSCALL_64_after_hwframe+0x44/0xa9 [=C2=A0 335.727011] RIP: 0033:0x7f57d742b757 [=C2=A0 335.727015] Code: 00 00 90 48 8b 05 39 a7 0c 00 64 c7 00 26 00 00= 00 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 b8 10 00 00 00 = 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 09 a7 0c 00 f7 d8 64 89 01 48 [=C2=A0 335.727017] RSP: 002b:00007fff80edfc58 EFLAGS: 00003246 ORIG_RAX:= 0000000000000010 [=C2=A0 335.727022] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000= 7f57d742b757 [=C2=A0 335.727025] RDX: 00007fff80edfc90 RSI: 00000000c01064b3 RDI: 0000= 000000000038 [=C2=A0 335.727028] RBP: 00007fff80edfc90 R08: 0000555ab4c906f0 R09: 0000= 000000000006 [=C2=A0 335.727030] R10: 0000555ab3ff3010 R11: 0000000000003246 R12: 0000= 0000c01064b3 [=C2=A0 335.727033] R13: 0000000000000038 R14: 0000555ab4c91f80 R15: 0000= 555ab4a03cc0 [=C2=A0 335.727038] ---[ end trace f558f2f0c6dcf783 ]--- [=C2=A0 371.536170] WARNING: CPU: 1 PID: 920 at drivers/gpu/drm/drm_gem.c= :893 drm_gem_object_put+0x33/0x40 [drm] [=C2=A0 371.536172] Modules linked in: udl rfcomm ctr ccm cpufreq_userspa= ce cpufreq_conservative cpufreq_powersave bnep nft_counter xt_owner xt_st= ate xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 libcrc32c nft_compat nf_tables nfnetlink binfmt_misc uvcvideo arc4 iwldvm= mac80211 videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_com= mon btusb btrtl btbcm snd_hda_codec_realtek videodev snd_hda_codec_generic btintel media bluetooth nvidia_drm(POE) iwlwifi i91= 5 drbg nvidia_modeset(POE) ansi_cprng intel_rapl x86_pkg_temp_thermal int= el_powerclamp ecdh_generic snd_hda_intel coretemp snd_hda_codec kvm_intel snd_hda_core drm_kms_helper snd_hwdep snd_pcm_oss= dell_laptop snd_mixer_oss dell_wmi dell_smbios dcdbas drm snd_pcm kvm cf= g80211 snd_timer snd joydev soundcore serio_raw sparse_keymap pcspkr [=C2=A0 371.536204]=C2=A0 mei_me mei i2c_algo_bit rfkill irqbypass iTCO_w= dt iTCO_vendor_support wmi_bmof dell_smm_hwmon evdev dell_wmi_descriptor = wmi sg intel_cstate intel_uncore pcc_cpufreq intel_rapl_perf video dell_smo8800 button battery ac nvidia(POE) ipmi_devintf ipmi_msghan= dler parport_pc ppdev lp parport ip_tables x_tables autofs4 ext4 crc16 mb= cache jbd2 crc32c_generic fscrypto ecb algif_skcipher af_alg dm_crypt dm_mod sr_mod cdrom sd_mod crct10dif_pclmul crc32_pclmul = crc32c_intel ghash_clmulni_intel pcbc ahci libahci aesni_intel xhci_pci x= hci_hcd ehci_pci libata ehci_hcd aes_x86_64 realtek crypto_simd usbcore cryptd psmouse scsi_mod glue_helper r8169 i2c_i801 li= bphy lpc_ich usb_common thermal [=C2=A0 371.536241] CPU: 1 PID: 920 Comm: Xorg Tainted: P=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0 W=C2=A0 OE=C2=A0=C2=A0=C2=A0=C2=A0 4.19.0-2-amd6= 4 #1 Debian 4.19.16-1 [=C2=A0 371.536242] Hardware name: Dell Inc.=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0 Dell System Vostro 3750/0VP036, BIOS A14 09/26/2= 012 [=C2=A0 371.536251] RIP: 0010:drm_gem_object_put+0x33/0x40 [drm] [=C2=A0 371.536253] Code: 28 53 48 8b 47 08 48 8b 40 68 48 a9 f8 ff ff ff= 74 18 48 89 fb e8 ed 1f e6 dd 84 c0 75 02 5b c3 48 89 df 5b e9 0e fc ff = ff c3 <0f> 0b eb e4 66 0f 1f 84 00 00 00 00 00 66 66 66 66 90 48 85 ff 74 [=C2=A0 371.536254] RSP: 0018:ffffba82c25f7d10 EFLAGS: 00010246 [=C2=A0 371.536255] RAX: 0000000000000000 RBX: ffff97fda60f7600 RCX: 0000= 000000000000 [=C2=A0 371.536256] RDX: ffffffffffffffff RSI: 0000000000000000 RDI: ffff= 97fda60f7600 [=C2=A0 371.536257] RBP: ffff97fda71cb820 R08: ffff97fd6893bd10 R09: 0000= 0000010ffff0 [=C2=A0 371.536257] R10: 0000000000100604 R11: 0000000000000000 R12: 0000= 000000000000 [=C2=A0 371.536258] R13: ffffba82c25f7dd0 R14: ffffba82c25f7dc8 R15: ffff= 97fd8de12e00 [=C2=A0 371.536259] FS:=C2=A0 00007f57d6cfaa80(0000) GS:ffff97fdae240000(= 0000) knlGS:0000000000000000 [=C2=A0 371.536260] CS:=C2=A0 0010 DS: 0000 ES: 0000 CR0: 000000008005003= 3 [=C2=A0 371.536261] CR2: 000056441c407000 CR3: 0000000416a9e004 CR4: 0000= 0000000606e0 [=C2=A0 371.536262] Call Trace: [=C2=A0 371.536269]=C2=A0 udl_gem_mmap+0x64/0xa0 [udl] [=C2=A0 371.536279]=C2=A0 ? drm_mode_create_dumb_ioctl+0x10/0x10 [drm] [=C2=A0 371.536288]=C2=A0 drm_ioctl_kernel+0xa1/0xf0 [drm] [=C2=A0 371.536298]=C2=A0 drm_ioctl+0x206/0x3a0 [drm] [=C2=A0 371.536308]=C2=A0 ? drm_mode_create_dumb_ioctl+0x10/0x10 [drm] [=C2=A0 371.536311]=C2=A0 ? iput+0x76/0x200 [=C2=A0 371.536314]=C2=A0 do_vfs_ioctl+0xa4/0x630 [=C2=A0 371.536316]=C2=A0 ksys_ioctl+0x60/0x90 [=C2=A0 371.536317]=C2=A0 __x64_sys_ioctl+0x16/0x20 [=C2=A0 371.536320]=C2=A0 do_syscall_64+0x53/0x100 [=C2=A0 371.536322]=C2=A0 entry_SYSCALL_64_after_hwframe+0x44/0xa9 [=C2=A0 371.536324] RIP: 0033:0x7f57d742b757 [=C2=A0 371.536325] Code: 00 00 90 48 8b 05 39 a7 0c 00 64 c7 00 26 00 00= 00 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 b8 10 00 00 00 = 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 09 a7 0c 00 f7 d8 64 89 01 48 [=C2=A0 371.536326] RSP: 002b:00007fff80edfc58 EFLAGS: 00003246 ORIG_RAX:= 0000000000000010 [=C2=A0 371.536328] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000= 7f57d742b757 [=C2=A0 371.536328] RDX: 00007fff80edfc90 RSI: 00000000c01064b3 RDI: 0000= 000000000038 [=C2=A0 371.536329] RBP: 00007fff80edfc90 R08: 0000555ab4c906f0 R09: 0000= 7f57d74f6d20 [=C2=A0 371.536330] R10: 0000555ab3ff3010 R11: 0000000000003246 R12: 0000= 0000c01064b3 [=C2=A0 371.536331] R13: 0000000000000038 R14: 0000555ab4c91f80 R15: 0000= 555ab4a03cc0 [=C2=A0 371.536332] ---[ end trace f558f2f0c6dcf784 ]--- [=C2=A0 388.386692] WARNING: CPU: 5 PID: 920 at drivers/gpu/drm/drm_gem.c= :893 drm_gem_object_put+0x33/0x40 [drm] [=C2=A0 388.386693] Modules linked in: udl rfcomm ctr ccm cpufreq_userspa= ce cpufreq_conservative cpufreq_powersave bnep nft_counter xt_owner xt_st= ate xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 libcrc32c nft_compat nf_tables nfnetlink binfmt_misc uvcvideo arc4 iwldvm= mac80211 videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_com= mon btusb btrtl btbcm snd_hda_codec_realtek videodev snd_hda_codec_generic btintel media bluetooth nvidia_drm(POE) iwlwifi i91= 5 drbg nvidia_modeset(POE) ansi_cprng intel_rapl x86_pkg_temp_thermal int= el_powerclamp ecdh_generic snd_hda_intel coretemp snd_hda_codec kvm_intel snd_hda_core drm_kms_helper snd_hwdep snd_pcm_oss= dell_laptop snd_mixer_oss dell_wmi dell_smbios dcdbas drm snd_pcm kvm cf= g80211 snd_timer snd joydev soundcore serio_raw sparse_keymap pcspkr [=C2=A0 388.386723]=C2=A0 mei_me mei i2c_algo_bit rfkill irqbypass iTCO_w= dt iTCO_vendor_support wmi_bmof dell_smm_hwmon evdev dell_wmi_descriptor = wmi sg intel_cstate intel_uncore pcc_cpufreq intel_rapl_perf video dell_smo8800 button battery ac nvidia(POE) ipmi_devintf ipmi_msghan= dler parport_pc ppdev lp parport ip_tables x_tables autofs4 ext4 crc16 mb= cache jbd2 crc32c_generic fscrypto ecb algif_skcipher af_alg dm_crypt dm_mod sr_mod cdrom sd_mod crct10dif_pclmul crc32_pclmul = crc32c_intel ghash_clmulni_intel pcbc ahci libahci aesni_intel xhci_pci x= hci_hcd ehci_pci libata ehci_hcd aes_x86_64 realtek crypto_simd usbcore cryptd psmouse scsi_mod glue_helper r8169 i2c_i801 li= bphy lpc_ich usb_common thermal [=C2=A0 388.386760] CPU: 5 PID: 920 Comm: Xorg Tainted: P=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0 W=C2=A0 OE=C2=A0=C2=A0=C2=A0=C2=A0 4.19.0-2-amd6= 4 #1 Debian 4.19.16-1 [=C2=A0 388.386761] Hardware name: Dell Inc.=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0 Dell System Vostro 3750/0VP036, BIOS A14 09/26/2= 012 [=C2=A0 388.386770] RIP: 0010:drm_gem_object_put+0x33/0x40 [drm] [=C2=A0 388.386772] Code: 28 53 48 8b 47 08 48 8b 40 68 48 a9 f8 ff ff ff= 74 18 48 89 fb e8 ed 1f e6 dd 84 c0 75 02 5b c3 48 89 df 5b e9 0e fc ff = ff c3 <0f> 0b eb e4 66 0f 1f 84 00 00 00 00 00 66 66 66 66 90 48 85 ff 74 [=C2=A0 388.386773] RSP: 0018:ffffba82c25f7d10 EFLAGS: 00010246 [=C2=A0 388.386774] RAX: 0000000000000000 RBX: ffff97fd71863800 RCX: 0000= 000000000000 [=C2=A0 388.386775] RDX: ffffffffffffffff RSI: 0000000000000000 RDI: ffff= 97fd71863800 [=C2=A0 388.386776] RBP: ffff97fda71cb820 R08: ffff97fd6893bd10 R09: 0000= 0000010ffff0 [=C2=A0 388.386776] R10: 0000000000100604 R11: 0000000000000000 R12: 0000= 000000000000 [=C2=A0 388.386777] R13: ffffba82c25f7dd0 R14: ffffba82c25f7dc8 R15: ffff= 97fd8de12e00 [=C2=A0 388.386778] FS:=C2=A0 00007f57d6cfaa80(0000) GS:ffff97fdae340000(= 0000) knlGS:0000000000000000 [=C2=A0 388.386779] CS:=C2=A0 0010 DS: 0000 ES: 0000 CR0: 000000008005003= 3 [=C2=A0 388.386780] CR2: 000056441c407000 CR3: 0000000416a9e001 CR4: 0000= 0000000606e0 [=C2=A0 388.386781] Call Trace: [=C2=A0 388.386787]=C2=A0 udl_gem_mmap+0x64/0xa0 [udl] [=C2=A0 388.386797]=C2=A0 ? drm_mode_create_dumb_ioctl+0x10/0x10 [drm] [=C2=A0 388.386806]=C2=A0 drm_ioctl_kernel+0xa1/0xf0 [drm] [=C2=A0 388.386824]=C2=A0 drm_ioctl+0x206/0x3a0 [drm] [=C2=A0 388.386834]=C2=A0 ? drm_mode_create_dumb_ioctl+0x10/0x10 [drm] [=C2=A0 388.386839]=C2=A0 ? __set_current_blocked+0x3d/0x60 [=C2=A0 388.386840]=C2=A0 ? signal_setup_done+0x94/0xb0 [=C2=A0 388.386844]=C2=A0 ? __fpu__restore_sig+0x90/0x460 [=C2=A0 388.386846]=C2=A0 do_vfs_ioctl+0xa4/0x630 [=C2=A0 388.386850]=C2=A0 ? _copy_from_user+0x37/0x60 [=C2=A0 388.386851]=C2=A0 ksys_ioctl+0x60/0x90 [=C2=A0 388.386853]=C2=A0 __x64_sys_ioctl+0x16/0x20 [=C2=A0 388.386855]=C2=A0 do_syscall_64+0x53/0x100 [=C2=A0 388.386858]=C2=A0 entry_SYSCALL_64_after_hwframe+0x44/0xa9 [=C2=A0 388.386859] RIP: 0033:0x7f57d742b757 [=C2=A0 388.386860] Code: 00 00 90 48 8b 05 39 a7 0c 00 64 c7 00 26 00 00= 00 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 b8 10 00 00 00 = 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 09 a7 0c 00 f7 d8 64 89 01 48 [=C2=A0 388.386861] RSP: 002b:00007fff80edfc58 EFLAGS: 00003246 ORIG_RAX:= 0000000000000010 [=C2=A0 388.386863] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000= 7f57d742b757 [=C2=A0 388.386863] RDX: 00007fff80edfc90 RSI: 00000000c01064b3 RDI: 0000= 000000000038 [=C2=A0 388.386864] RBP: 00007fff80edfc90 R08: 0000555ab4c906f0 R09: 0000= 000000000006 [=C2=A0 388.386865] R10: 0000555ab3ff3010 R11: 0000000000003246 R12: 0000= 0000c01064b3 [=C2=A0 388.386866] R13: 0000000000000038 R14: 0000555ab4c91f80 R15: 0000= 555ab4a03cc0 [=C2=A0 388.386867] ---[ end trace f558f2f0c6dcf785 ]--- With best regards, Wojtek --=20 Wojciech M Zabolotny, PhD Institute of Electronic Systems Faculty of Electronics and Information Technology Warsaw University of Technology