From mboxrd@z Thu Jan 1 00:00:00 1970 MIME-Version: 1.0 From: Pintu Kumar Date: Wed, 25 Apr 2018 14:09:41 +0530 Message-ID: Content-Type: text/plain; charset="UTF-8" Subject: [Xenomai] Kernel oops during rtnet loopback usage on x86_64 (e1000e) List-Id: Discussions about the Xenomai project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: "Xenomai@xenomai.org" Hi, I got kernel oops when using rtnet loopback with simple udp socket on Xenomai 3.0 STEPS: ========= # lspci -knn | grep -i ethernet -A 3 00:1f.6 Ethernet controller [0200]: Intel Corporation Ethernet Connection (2) I219-V [8086:15b8] (rev 31) Subsystem: ASUSTeK Computer Inc. Ethernet Connection (2) I219-V [1043:8672] Kernel driver in use: e1000e Kernel modules: e1000e ------------- sudo ifconfig lo down sudo modprobe rtnet sudo modprobe rtipv4 sudo modprobe rtudp sudo modprobe rtpacket sudo modprobe rt_loopback sudo /usr/xenomai/sbin/rtifconfig rtlo up 127.0.0.1 # /usr/xenomai/sbin/rtifconfig rtlo Medium: Local Loopback IP address: 127.0.0.1 UP LOOPBACK RUNNING MTU: 1500 ------------- Note: I am not installing e1000e driver, as I am checking on loopback interface now. # ./rtnet-udp-server 5600 & # ./rtnet-udp-client 5800 127.0.0.1 5600 server => establish the UDP connection and wait for some message from client. client => just send the "hello" message to the server Note: the same program works when build with normal Linux. INFO: ============= # xeno-config --info Xenomai version: Xenomai/cobalt v3.0.6 -- #5956064 (2018-03-20 12:13:33 +0100) Linux 4.9.51-x86-64-pintu-xeno3-rtdm #2 SMP Wed Apr 25 16:30:53 JST 2018 x86_64 x86_64 x86_64 GNU/Linux Kernel parameters: initrd=0:\initrd.img-4.9.51-x86-64-pintu-xeno3-rtdm root=/dev/disk/by-partlabel/system ro ip=off I-pipe release #4 detected Cobalt core 3.0.6 detected Compiler: gcc version 5.4.0 Build args: ============= --------------------- [ 377.304363] *** RTnet for Xenomai v3.0.6 *** [ 377.304366] RTnet: initialising real-time networking [ 377.319430] Intel(R) PRO/1000 Network Driver - version 7.1.9 [ 377.319433] Copyright (c) 1999-2006 Intel Corporation. [ 379.632211] initializing loopback... [ 379.632218] RTnet: registered rtlo [ 474.312740] BUG: unable to handle kernel paging request at 00007ffcb25562e8 [ 474.312744] IP: [] rt_udp_ioctl+0x45/0x5f [rtudp] [ 474.312748] PGD 80bccc067 [ 474.312749] PUD 80f039067 [ 474.312750] PMD 80c364067 [ 474.312751] PTE 8000000806e09867 [ 474.312754] Oops: 0001 [#1] SMP [ 474.312755] Modules linked in: rt_loopback rtpacket rtudp rt_e1000 rtipv4 rtnet arc4 8021q garp mrp stp llc rfcomm bnep snd_hda_codec_hdmi nls_iso8859_1 ath10k_pci ath10k_core ath mac80211 intel_rapl eeepc_wmi asus_wmi x86_pkg_temp_thermal sparse_keymap intel_powerclamp mxm_wmi coretemp kvm irqbypass crct10dif_pclmul cfg80211 crc32_pclmul ghash_clmulni_intel aesni_intel snd_hda_codec_realtek aes_x86_64 snd_hda_codec_generic lrw gf128mul glue_helper snd_hda_intel ablk_helper snd_hda_codec cryptd btusb snd_hda_core btrtl snd_hwdep mei_me mei shpchp serio_raw hci_uart btbcm btqca btintel bluetooth wmi acpi_als kfifo_buf industrialio intel_lpss_acpi intel_lpss mac_hid acpi_pad autofs4 e1000e psmouse ptp pps_core ahci libahci video i2c_hid pinctrl_sunrisepoint pinctrl_intel hid fjes [ 474.312806] CPU: 0 PID: 3232 Comm: rtnet-server Not tainted 4.9.51-x86-64-pintu-xeno3-rtdm #2 [ 474.312808] Hardware name: SkyLake [ 474.312809] I-pipe domain: Linux [ 474.312810] task: ffff8eaa4d090f00 task.stack: ffffa4cc080d4000 [ 474.312811] RIP: 0010:[] [] rt_udp_ioctl+0x45/0x5f [rtudp] [ 474.312814] RSP: 0018:ffffa4cc080d7e20 EFLAGS: 00010246 [ 474.312815] RAX: 00007ffcb25562e0 RBX: ffff8eaa4cf52800 RCX: ffff8eaa4cf52840 [ 474.312816] RDX: 0000000000000000 RSI: 0000000040100022 RDI: ffff8eaa4cf52800 [ 474.312817] RBP: ffffa4cc080d7e20 R08: 00007fa113b57d78 R09: 0000000000000105 [ 474.312819] R10: 000000010000aa3a R11: ffff8eaa50e39600 R12: 0000000000000003 [ 474.312820] R13: ffff8eaa4d090f00 R14: 000000004cf52800 R15: ffffa4cc03856040 [ 474.312821] FS: 00007fa1145b3740(0000) GS:ffff8eaa56200000(0000) knlGS:0000000000000000 [ 474.312823] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 474.312824] CR2: 00007ffcb25562e8 CR3: 000000080f0a9000 CR4: 00000000003406f0 [ 474.312825] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 474.312826] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 474.312827] Stack: [ 474.312828] ffffa4cc080d7eb0 ffffffffa419a0e7 00007ffcb25562e0 4010002200000003 [ 474.312831] ffff8eaa00000010 ffffa4cc080d7ec0 ffffa4cc080d7e58 ffff8eaa4d090f00 [ 474.312834] ffffffffa419e590 00007ffcb25562e0 ffffa4cc080d7e90 ffffffffa409a6f1 [ 474.312836] Call Trace: [ 474.312840] [] rtdm_fd_ioctl+0xe7/0x280 [ 474.312842] [] ? CoBaLt_fcntl+0x20/0x20 [ 474.312844] [] ? __ipipe_migrate_head+0x51/0xb0 [ 474.312846] [] ? CoBaLt_fcntl+0x20/0x20 [ 474.312848] [] CoBaLt_ioctl+0xe/0x20 [ 474.312850] [] ipipe_syscall_hook+0x114/0x320 [ 474.312853] [] __ipipe_notify_syscall+0xbf/0x170 [ 474.312855] [] ? sigprocmask+0x51/0x80 [ 474.312858] [] pipeline_syscall+0x8/0x1b [ 474.312859] Code: 00 10 40 48 8d 4f 40 74 22 81 fe 23 00 10 40 75 10 8b 50 08 48 8b 30 48 89 cf e8 b7 fd ff ff 5d c3 48 89 c2 e8 5d 26 fd ff 5d c3 <8b> 50 08 48 8b 30 48 89 cf e8 6d fa ff ff 5d c3 48 89 c2 e8 13 [ 474.312890] RIP [] rt_udp_ioctl+0x45/0x5f [rtudp] [ 474.312892] RSP [ 474.312893] CR2: 00007ffcb25562e8 [ 474.312895] ---[ end trace b2113f37ad3abd56 ]--- [ 489.183060] BUG: unable to handle kernel paging request at 00007fff6fe2a908 [ 489.183064] IP: [] rt_udp_ioctl+0x45/0x5f [rtudp] [ 489.183067] PGD 80b14a067 [ 489.183068] PUD 812af3067 [ 489.183070] PMD 810e50067 [ 489.183070] PTE 8000000805867867 --------------------- I am using some 3 months old xenomai-3.0. But in latest commits also I could not find any fix for it. If there is any fix available for it please let me know. Thanks, Pintu