On 20.08.20 15:46, François Legal via Xenomai wrote: > Using RTNet with multiple interfaces, xenomai 3.1 with linux 4.4 > Whenever a posix RT thread calls recvmsg (), I get this error. > > I could track this down to line 422 in udp.c : msg = rtnet_get_arg(fd, > &_msg, u_msg, sizeof(_msg)); > > If I disassemble the kernel, the failing instruction (at 0x80272444) is a nop > in arm_copy_from_user > Am I doing anything wrong ?
Maybe you are passing an invalid pointer to recvmsg, directly or in its message structures. That would cause an exception which is fixed up but also reported. Do you get an error in return? Jan -- Siemens AG, Corporate Technology, CT RDA IOT SES-DE Corporate Competence Center Embedded Linux
