Just had a bug msg pop up. Its triggered by enabling tracing, while we have 2 processes running, using IDDP, XDDP and RTNet (just packet sockets, no ip stack). Some points:
- trace-cmd stores in tmp, so shouldn't touch other filesystems than tmpfs, sysfs - upon starting this, our process complains about a 150ms hole in CPU time (likely the time of the bug) - it seems to happen only the first time after a boot - running trace-cmd "dry" (without our processes) doesn't trigger the bug. Neither when disabling active communication on our project (per millisecond up to 15 eth packets in both directions via packet socket, using the new send/recv_mmsg calls). - system seems to continue stable afterwards - a trace is attached, not after triggering the bug (then it would just contain our project in error state) but showing or project with active communication (ie. trace-cmd started a second time after a bug) # trace-cmd record -e 'cobalt*' [ 160.443596] I-pipe: Detected stalled head domain, probably caused by a bug. [ 160.443596] A critical section may have been left unterminated. [ 160.457178] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.19.84-xeno8-static #1 [ 160.464323] Hardware name: TQ-Group TQMxE39M/Type2 - Board Product Name, BIOS 5.12.30.21.20 08/05/2019 [ 160.473640] I-pipe domain: Linux [ 160.476877] Call Trace: [ 160.479345] dump_stack+0x8c/0xc0 [ 160.482672] ipipe_stall_root+0xc/0x30 [ 160.486436] __ipipe_trap_prologue+0x100/0x210 [ 160.490894] int3+0x45/0x70 [ 160.493702] RIP: 0010:xnthread_resume+0x75/0x3a0 [ 160.498329] Code: 0f eb 00 74 21 31 c0 ba 01 00 00 00 f0 0f b1 15 c5 0f eb 00 85 c0 0f 85 db 02 00 00 4c 8b 2c 24 89 1d af 0f eb 00 4d0 [ 160.517108] RSP: 0018:ffff9934400a7dd8 EFLAGS: 00000046 [ 160.522349] RAX: 0000000000000001 RBX: 0000000000000001 RCX: 00007f37aa603700 [ 160.529490] RDX: 0000000000000001 RSI: 0000000000000080 RDI: ffff9934405dc240 [ 160.536631] RBP: ffff9934405dc240 R08: 00000000000f7df7 R09: ffff9140f8cb2800 [ 160.543774] R10: 00000000000003b3 R11: 00000000000b8c4a R12: 0000000000025090 [ 160.550918] R13: 0000000000000003 R14: 0000000000000080 R15: 0000000000000080 [ 160.558064] ? xnthread_resume+0x75/0x3a0 [ 160.562083] ? xnthread_resume+0x1f/0x3a0 [ 160.566104] ipipe_migration_hook+0xda/0x1d0 [ 160.570385] complete_domain_migration+0x79/0xe0 [ 160.575011] __ipipe_switch_tail+0x39/0x50 [ 160.579118] __schedule+0x2d0/0x890 [ 160.582615] schedule_idle+0x28/0x40 [ 160.586203] do_idle+0x101/0x130 [ 160.589440] cpu_startup_entry+0x6f/0x80 [ 160.593373] start_secondary+0x169/0x1b0 [ 160.597312] secondary_startup_64+0xa4/0xb0 Mit besten Grüßen / Kind regards NORBERT LANGE AT-RD3 ANDRITZ HYDRO GmbH Eibesbrunnergasse 20 1120 Vienna / AUSTRIA p: +43 50805 56684 norbert.la...@andritz.com<mailto:norbert.la...@andritz.com> andritz.com<http://www.andritz.com/> ________________________________ This message and any attachments are solely for the use of the intended recipients. They may contain privileged and/or confidential information or other information protected from disclosure. If you are not an intended recipient, you are hereby notified that you received this email in error and that any review, dissemination, distribution or copying of this email and any attachment is strictly prohibited. If you have received this email in error, please contact the sender and delete the message and any attachment from your system. ANDRITZ HYDRO GmbH Rechtsform/ Legal form: Gesellschaft mit beschränkter Haftung / Corporation Firmensitz/ Registered seat: Wien Firmenbuchgericht/ Court of registry: Handelsgericht Wien Firmenbuchnummer/ Company registration: FN 61833 g DVR: 0605077 UID-Nr.: ATU14756806 Thank You ________________________________ -------------- next part -------------- A non-text attachment was scrubbed... Name: trace.dat.xz Type: application/octet-stream Size: 2775472 bytes Desc: trace.dat.xz URL: <http://xenomai.org/pipermail/xenomai/attachments/20191213/0e1c8638/attachment.obj>
