[Mono-dev] mono SEGFAULT problem

[Hubert FONGARNAND]

Hi, everibody

    Since about a week, my SMTP Server (which is in C#/mono) crashes
about 1 time /day...
It's a multithreaded program that work on an RHEL4 server with 3
double-core processor and 16Gio RAM.
The segfaults appears randomly... and i cannot reproduce the bug on my
devs and beta machine. My program doesn't call any C library, so the
crash seems to be on mono itself

I'm running mono 1.9.1 (it crashes too with mono 1.2.6)

without gdb it crashes with:


Stacktrace:
 
 
Native stacktrace:
 
        mono [0x8152f80]
        mono [0x807819a]
        /lib/tls/libpthread.so.0 [0x6b2890]
        mono [0x813bc94]
        mono [0x80bd5c1]
        mono [0x80bdd0a]
        mono [0x8102656]
        mono [0x8116769]
        /lib/tls/libpthread.so.0 [0x6ac371]
        /lib/tls/libc.so.6(__clone+0x5e) [0x535ffe]
 
Debug info from gdb:
 
 
 
=================================================================
Got a SIGSEGV while executing native code. This usually indicates
a fatal error in the mono runtime or one of the native libraries
used by your application.
=================================================================

  Aborted 

I've run my program with Gdb 

[New Thread 66501552 (LWP 7705)]
[Thread 117857200 (LWP 7700) exited]

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 19356592 (LWP 4481)]
mono_debugger_thread_cleanup (jit_tls=0x85ba670) at debug-mini.c:802
802                     if (info->jit_tls != jit_tls)
(gdb) bt
#0  mono_debugger_thread_cleanup (jit_tls=0x85ba670) at debug-mini.c:802
#1  0x08148794 in mini_thread_cleanup (thread=0xb6f5ce70) at mini.c:9670
#2  0x080c4860 in thread_cleanup (thread=0xb6f5ce70) at threads.c:509
#3  0x080c4fc1 in start_wrapper (data=0xb66a7fa0) at threads.c:605
#4  0x0810d09e in thread_start_routine (args=0xb78a4938) at threads.c:282
#5  0x08121b19 in GC_start_routine (arg=0xb65aa9a0) at pthread_support.c:1369
#6  0x006ac371 in start_thread () from /lib/tls/libpthread.so.0
#7  0x00535ffe in clone () from /lib/tls/libc.so.6
(gdb) q
The program is running.  Exit anyway? (y or n) y
[root at lxlyosmc10 Server]# 



Could someone help me please

It seems this is a GC issue 




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