Re: [Xenomai-help] Strange deadlock.

[Maksym Veremeyenko <verem@domain.hid>]

Philippe Gerum пишет:

>> seems bus_monitor_proc[0] locked mutex and want to lock again but its 
>> blocked.  (i still looking for stack corruption point, but no success.) 
>> It have the same behavior on two configuration 2.6.17.4 + 2.2.4 and 
>> 2.6.19.2 + 2.3.0 + 1.7-01
>> i checked with GDB - two task are wating for mutex.
>> All task perform switching to secondary mode.
> 
> Could you strip your code to a bare minimum that still exhibits this bug
> and post it here ? TIA,
unfortunately i can reproduce this situation only on working model with 
serial controlled device in one of this threads.

>> 1. On program start after previous crash i unable to create named mutex, 
>> because it [-EEXIST], after bind it's unable to operate with it because 
>> it locked by task from early died program, i have to restart computer. 
>> Any suggestions?
> 
> Something like this would do:
> 
> if (rt_mutex_bind("...", &desc) == 0)
> 	rt_mutex_delete(&desc);
> 
> rt_mutex_create("...", &desc);
YES! this works fine for me.


________________________________________
Maksym Veremeyenko