Hi list I get a massive amount of "swithching ... to secondary mode after exception #14 in kernel-space ..." followed by a WARNING as shown below.
Can someone enlighten me regarding the meaning of exception #14 ? Is the "WARNING: CPU: 0 ..." the cause or the symptom ? It has a macro at fd.c calling "XENO_WARN_ON(COBALT, fd->refs <= 0); This is for Xenomai 3.1 [ 133.458856] [Xenomai] switching RTTest to secondary mode after exception #14 in kernel-space at 0xffffffff8145386e (pid 498) [ 133.461217] ------------[ cut here ]------------ [ 133.461218] WARNING: CPU: 0 PID: 199 at /usr/src/kernel/kernel/xenomai/rtdm/fd.c:299 __put_fd+0x242/0x290 [ 133.461218] Modules linked in: rttcp rtudp rtipv4 intel_powerclamp intel_rapl coretemp i915 e1000e rt_igb pcan(O) rtnet video fan thermal_sys [ 133.461225] CPU: 0 PID: 199 Comm: rtnet-stack Tainted: G O 4.9.90-xeno-cobolt #1 [ 133.461226] Hardware name: Default string Default string/SKYBAY, BIOS 5.0.1.1 04/18/2016 [ 133.461226] I-pipe domain: Xenomai [ 133.461227] ffffc90000947d20 ffffffff81446d18 0000000000000000 0000000000000000 [ 133.461229] ffffffff81bb13f0 ffffc90000947d60 ffffffff81078461 0000012b00000001 [ 133.461231] 0000000000000000 0000000000000000 ffff88026194d000 0000000000000000 [ 133.461233] Call Trace: [ 133.461234] [<ffffffff81446d18>] dump_stack+0xbf/0xe7 [ 133.461234] [<ffffffff81078461>] __warn+0xe1/0x100 [ 133.461235] [<ffffffff8107854d>] warn_slowpath_null+0x1d/0x20 [ 133.461235] [<ffffffff811711e2>] __put_fd+0x242/0x290 [ 133.461236] [<ffffffffa00bae46>] ? rtskb_pool_queue_tail+0xa6/0xd0 [rtnet] [ 133.461236] [<ffffffff81171ff6>] rtdm_fd_unlock+0x96/0xc0 [ 133.461237] [<ffffffffa02ed725>] rt_ip_rcv+0x135/0x170 [rtipv4] [ 133.461237] [<ffffffffa00bc008>] rt_stack_deliver+0xf8/0x220 [rtnet] [ 133.461238] [<ffffffff8115fd20>] ? xnthread_map+0x330/0x330 [ 133.461238] [<ffffffffa00bc1a0>] rt_stack_mgr_task+0x70/0xa0 [rtnet] [ 133.461239] [<ffffffff8115fd93>] kthread_trampoline+0x73/0x120 [ 133.461240] [<ffffffff810967a9>] kthread+0xd9/0xf0 [ 133.461240] [<ffffffff810966d0>] ? kthread_park+0x60/0x60 [ 133.461241] [<ffffffff81001c92>] ? do_syscall_64+0x82/0xf0 [ 133.461241] [<ffffffff818e0255>] ret_from_fork+0x55/0x60 [ 133.461242] ---[ end trace c5197a4d8608bef3 ]--- Per Öberg
