On 21.03.22 15:40, Mauro via Xenomai wrote: > Hi all, > > I'm using Xenomai 3.1.2 on a Intel Atom x5-E8000 64bit with an Intel > I210 gigabit ethernet controller. Linux kernel is 5.4.181. > > I have two identical devices, one configured as master: > > ------------- > $ cat /etc/rtnet.conf > prefix="/usr" > exec_prefix="/usr" > RTNET_MOD="/lib/modules/`uname -r`/kernel/drivers/xenomai/net" > RTIFCONFIG="/usr/sbin/rtifconfig" > RTCFG="/usr/sbin/rtcfg" > TDMACFG="/usr/sbin/tdmacfg" > MODULE_EXT=".ko" > > RT_DRIVER="rt_igb" > RT_DRIVER_OPTIONS="" > > REBIND_RT_NICS="0000:03:00.0" > > IPADDR="10.0.0.1" > NETMASK="" > > RT_LOOPBACK="yes" > RT_PROTOCOLS="udp packet" > RTCAP="no" > > STAGE_2_SRC="" > STAGE_2_DST="" > STAGE_2_CMDS="" > > TDMA_MODE="master" > TDMA_SLAVES="10.0.0.2" > TDMA_CYCLE="1000" > TDMA_OFFSET="200" > #TDMA_CONFIG="/etc/tdma.conf" > ------------- > > and one as slave: > > ------------- > $ cat /etc/rtnet.conf > prefix="/usr" > exec_prefix="/usr" > RTNET_MOD="/lib/modules/`uname -r`/kernel/drivers/xenomai/net" > RTIFCONFIG="/usr/sbin/rtifconfig" > RTCFG="/usr/sbin/rtcfg" > TDMACFG="/usr/sbin/tdmacfg" > MODULE_EXT=".ko" > > RT_DRIVER="rt_igb" > RT_DRIVER_OPTIONS="" > > REBIND_RT_NICS="0000:03:00.0" > > IPADDR="10.0.0.2" > NETMASK="" > RT_LOOPBACK="yes" > RT_PROTOCOLS="udp packet" > RTCAP="no" > > STAGE_2_SRC="" > STAGE_2_DST="" > STAGE_2_CMDS="" > > TDMA_MODE="slave" > > TDMA_SLAVES="10.0.0.2 10.0.0.3 10.0.0.4" > TDMA_CYCLE="5000" > TDMA_OFFSET="200" > #TDMA_CONFIG="/etc/tdma.conf" > ------------- > > I start rtnet with "rtnet start" on master > > $ rtnet start > Waiting for all slaves... > > dmesg on master shows: > > ....... > TDMA: Failed to transmit sync frame! > TDMA: Failed to transmit sync frame! > TDMA: Failed to transmit sync frame! > TDMA: Failed to transmit sync frame! > TDMA: Failed to transmit sync frame! > TDMA: Failed to transmit sync frame! > TDMA: Failed to transmit sync frame! > TDMA: Failed to transmit sync frame! > TDMA: Failed to transmit sync frame! > rt_igb: rteth0: igb: rteth0 NIC Link is Up 1000 Mbps Full Duplex, Flow > Control: RX/TX > > > Then, I start rtnet with "rtnet start" on slave > > $ rtnet start > Stage 1: searching for master... > Stage 2: waiting for other slaves... > Stage 3: waiting for common setup completion...ioctl: Invalid argument > > dmesg on slave shows: > > *** RTnet for Xenomai v3.1.2 *** > > RTnet: initialising real-time networking > rt_igb: Intel(R) Gigabit Ethernet Network Driver - version 5.2.18-k > rt_igb: Copyright (c) 2007-2014 Intel Corporation. > igb 0000:03:00.0: removed PHC on eth1 > RTnet: registered rteth0 > rt_igb 0000:03:00.0: Intel(R) Gigabit Ethernet Network Connection > rt_igb 0000:03:00.0: rteth0: (PCIe:2.5Gb/s:Width x1) 00:30:d6:2b:78:c9 > rt_igb 0000:03:00.0: rteth0: PBA No: FFFFFF-0FF > rt_igb 0000:03:00.0: Using MSI-X interrupts. 1 rx queue(s), 1 tx queue(s) > rt_loopback: initializing loopback interface... > RTnet: registered rtlo > RTcfg: init real-time configuration distribution protocol > RTmac: init realtime media access control > RTmac/TDMA: init time division multiple access control mechanism > udevd[401]: Error changing net interface name vnic0 to : Invalid argument > udevd[401]: could not rename interface '5' from 'vnic0' to '': Invalid > argument > rt_igb: rteth0: igb: rteth0 NIC Link is Up 1000 Mbps Full Duplex, Flow > Control: RX/TX > usercopy: Kernel memory exposure attempt detected from SLUB object > 'rtskb_slab_pool' (offset 219, size 66)! > invalid opcode: 0000 [#1] PREEMPT SMP PTI > CPU: 0 PID: 419 Comm: rtcfg Tainted: G W 5.4.181-xeno #1 > Hardware name: Default string Default string/69823 MSC > Q7-BW-E8000-13N0220C PCBFTX, BIOS V1.20#KW050220A 03/16/2018 > I-pipe domain: Linux > RIP: 0010:usercopy_abort+0x7b/0x7d > Code: bb 48 c7 c2 30 1d e5 bb 4c 0f 45 de 48 c7 c6 a3 0c e4 bb 57 48 0f > 45 f2 4c 89 d1 4c 89 da 48 c7 c7 d0 1c e5 bb e8 d9 95 ff ff <0f> 0b 49 > 8d 0c 24 4c 8d 03 48 29 d1 31 f6 41 8d 55 00 48 c7 c7 72 > RSP: 0018:ffffb7dac07efbf0 EFLAGS: 00010246 > RAX: 000000000000006b RBX: 0000000000000042 RCX: 0000000000000000 > RDX: 0000000000000000 RSI: ffff9df43661b4c8 RDI: 00000000ffffffff > RBP: ffffb7dac07efc08 R08: 00000000000002b5 R09: 0000000000000101 > R10: 0000000000000001 R11: 0000000000000400 R12: ffff9df4371a38db > R13: 0000000000000001 R14: ffff9df4371a391d R15: ffff9df43896af48 > FS: 00007fe873ae6540(0000) GS:ffff9df436600000(0000) > knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 00007fa6254b14e0 CR3: 0000000077026000 CR4: 00000000001006f0 > Call Trace: > __check_heap_object+0xed/0x120 > __check_object_size+0x14c/0x160 > copy_stage_1_data+0x50/0x80 [rtcfg] > rtnet_rtpc_dispatch_call+0x187/0x360 [rtnet] > ? cleanup_cmd_del+0x70/0x70 [rtcfg] > ? finish_wait+0x90/0x90 > rtcfg_ioctl+0xa2/0x250 [rtcfg] > ? rtdev_get_by_name+0xa6/0xd0 [rtnet] > rtnet_ioctl+0xe4/0x180 [rtnet] > do_vfs_ioctl+0x40c/0x670 > ? handle_mm_fault+0xe5/0x220 > ksys_ioctl+0x6c/0xa0 > __x64_sys_ioctl+0x1a/0x20 > do_syscall_64+0x64/0xb0 > entry_SYSCALL_64_after_hwframe+0x44/0xa9 > RIP: 0033:0x7fe873a184e7 > Code: 00 00 90 48 8b 05 a9 59 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 79 59 0c 00 f7 d8 64 89 01 48 > RSP: 002b:00007ffec4281878 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 > RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007fe873a184e7 > RDX: 0000559484de0060 RSI: 0000000040a00104 RDI: 0000000000000003 > RBP: 0000000000000001 R08: 00005594866382a0 R09: 0000000000000047 > R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 > R13: 00000000000005dc R14: 00000000000005dc R15: 00007ffec42819c8 > Modules linked in: tdma rtmac rtcfg rt_loopback rtpacket rtudp rt_igb > rtipv4 rtnet intel_rapl_msr intel_rapl_common intel_powerclamp mei_txe > mei i915 coretemp efivars video > ---[ end trace 9b391f8ebbda09ed ]--- > RIP: 0010:usercopy_abort+0x7b/0x7d > Code: bb 48 c7 c2 30 1d e5 bb 4c 0f 45 de 48 c7 c6 a3 0c e4 bb 57 48 0f > 45 f2 4c 89 d1 4c 89 da 48 c7 c7 d0 1c e5 bb e8 d9 95 ff ff <0f> 0b 49 > 8d 0c 24 4c 8d 03 48 29 d1 31 f6 41 8d 55 00 48 c7 c7 72 > RSP: 0018:ffffb7dac07efbf0 EFLAGS: 00010246 > RAX: 000000000000006b RBX: 0000000000000042 RCX: 0000000000000000 > RDX: 0000000000000000 RSI: ffff9df43661b4c8 RDI: 00000000ffffffff > RBP: ffffb7dac07efc08 R08: 00000000000002b5 R09: 0000000000000101 > R10: 0000000000000001 R11: 0000000000000400 R12: ffff9df4371a38db > R13: 0000000000000001 R14: ffff9df4371a391d R15: ffff9df43896af48 > FS: 00007fe873ae6540(0000) GS:ffff9df436600000(0000) > knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 00007fa6254b14e0 CR3: 0000000077026000 CR4: 00000000001006f0 > ------------[ cut here ]------------ > kernel BUG at mm/usercopy.c:99! > hard_start_xmit returned -11 > > > Sometimes the "ioctl: Invalid argument" is also on "Stage 1: searching > for master..." > > What am I doing wrong? > > Thanks in advance, regards >
This likely relates CONFIG_HARDENED_USERCOPY and RTnet not tagging the rtskb slab pool at being a potential usercopy source/sink. Happy to take patches that resolves it. Or you need to disable this checking feature. Jan -- Siemens AG, Technology Competence Center Embedded Linux
