Christoph Permes wrote:
> Hi,
>
> I'm using rt_printf for debug output. When running tests for 20 hours or
> longer, sometimes I get a segmentation fault.
>
> The backtrace shows:
> #0 0xb7d008d8 in fputs () from /lib/libc.so.6
> #1 0xb7f26f61 in print_buffers () from /usr/xenomai/lib/librtdk.so.0
> #2 0xb7f26fb3 in printer_loop () from /usr/xenomai/lib/librtdk.so.0
> #3 0xb7c92f3b in start_thread () from /lib/libpthread.so.0
> #4 0xb7d6fb6e in clone () from /lib/libc.so.6
>
> It seems to me that there is a bug in the print thread.
>
> My program runs on x86 using the following software versions:
> Kernel 2.6.29.5
> Xenomai 2.4.9
> I-Pipe patch: adeos-ipipe-2.6.29.5-x86-2.4-02.patch
Could you try the following patch?
diff --git a/src/rtdk/rt_print.c b/src/rtdk/rt_print.c
index 0615247..a0aeec3 100644
--- a/src/rtdk/rt_print.c
+++ b/src/rtdk/rt_print.c
@@ -422,6 +422,7 @@ void __rt_print_init(void)
pthread_attr_t thattr;
const char *value_str;
unsigned long long period;
+ unsigned stksize;
first_buffer = NULL;
seq_no = 0;
@@ -457,6 +458,9 @@ void __rt_print_init(void)
pthread_cond_init(&printer_wakeup, NULL);
pthread_attr_init(&thattr);
- pthread_attr_setstacksize(&thattr, PTHREAD_STACK_MIN);
+ stksize = 32768;
+ if (stksize < PTHREAD_STACK_MIN)
+ stksize = PTHREAD_STACK_MIN;
+ pthread_attr_setstacksize(&thattr, stksize);
pthread_create(&printer_thread, &thattr, printer_loop, NULL);
}
--
Gilles
_______________________________________________
Xenomai-help mailing list
[email protected]
https://mail.gna.org/listinfo/xenomai-help
