Приложение иногда падает в "корку" по сигналу 10 (Bus error).
Приложение скомпилено с отладочным кодом, gdb говорит:
Program terminated with signal 10, Bus error.

backtrace ничего криминального не показывает. Если с Segmentation fault все вроде понятно и баги легко находятся, то что делать с Bus error непонятно. Куда копать?

Program terminated with signal 10, Bus error.
..
#0  0x0000000102669823 in malloc () from /lib/libc.so.7
[New Thread 0x102b01f80 (LWP 100141)]
[New Thread 0x102b01850 (LWP 100064)]
[New Thread 0x102b016e0 (LWP 100055)]
[New Thread 0x102b01570 (LWP 100051)]
[New Thread 0x102b01400 (LWP 100048)]
[New Thread 0x102b01290 (LWP 100045)]
[New Thread 0x102b01120 (LWP 100221)]
(gdb) info thread
  7 Thread 0x102b01120 (LWP 100221)  0x00000001026965ec in recvfrom () from /lib/libc.so.7
  6 Thread 0x102b01290 (LWP 100045)  0x00000001026d9cdc in select () from /lib/libc.so.7
  5 Thread 0x102b01400 (LWP 100048)  0x00000001026beb4c in nanosleep () from /lib/libc.so.7
  4 Thread 0x102b01570 (LWP 100051)  0x000000010267b52c in accept () from /lib/libc.so.7
  3 Thread 0x102b016e0 (LWP 100055)  0x00000001026beb4c in nanosleep () from /lib/libc.so.7
  2 Thread 0x102b01850 (LWP 100064)  0x000000010264cd4c in _umtx_op () from /lib/libc.so.7
* 1 Thread 0x102b01f80 (LWP 100141)  0x0000000102669823 in malloc () from /lib/libc.so.7
(gdb) bt
#0  0x0000000102669823 in malloc () from /lib/libc.so.7
#1  0x0000000102669afe in free () from /lib/libc.so.7
#2  0x0000000000410175 in radauth_thread (argp=0x7fffffffe8f0) at radius.c:884
#3  0x0000000100c3ca88 in pthread_getprio () from /lib/libthr.so.3
#4  0x00007ffff67b6000 in ?? ()
Cannot access memory at address 0x7ffff69b6000
(gdb) frame 0
#0  0x0000000102669823 in malloc () from /lib/libc.so.7
(gdb) info local
No symbol table info available.
(gdb) frame 1
#1  0x0000000102669afe in free () from /lib/libc.so.7
(gdb) info local
No symbol table info available.