- **status**: fixed --> accepted
- **Comment**:
There is one issue related to thread synchrionisarion reported:
>Hi Nagu
>
>I think there might still be race conditions that need to be fixed.
>
>Seems to be at least two places where rcv_msg_id is reset to 0 in the main
>thread, that might interfere with the MDS thread’s use of rcv_msg_id.
>
>Thanks
>Gary
>
---
** [tickets:#1728] amfnd: message ID mismatch causing node reboot**
**Status:** accepted
**Milestone:** 5.0.RC1
**Created:** Wed Apr 06, 2016 08:39 AM UTC by Gary Lee
**Last Updated:** Mon Apr 11, 2016 12:10 PM UTC
**Owner:** Nagendra Kumar
"Message ID mismatch, rec %u, expected %u" can sometimes be seen on a node.
This seems to be caused by the addition of the IMM reader thread.
In various message handlers, rcv_msg_id is recorded:
avnd_msgid_assert(info->msg_id);
cb->rcv_msg_id = info->msg_id;
But now we potentially have the main thread and IMM reader thread updating this
concurrently.
The update of rcv_msg_id should possibly be done in a single thread. Eg. in
avnd_mds_rcv() when a message is received from AMFD.
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