.
Thread 4 (process 6123):
#0  0xffffe405 in __kernel_vsyscall ()
#1  0xf795af15 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib32/libpthread.so.0
#2  0xf6c8bff8 in ?? ()
#3  0xf5b6703c in ?? ()
#4  0xf5b6706c in ?? ()
#5  0xf59f92f8 in ?? ()
#6  0xf6c8becf in ?? ()
#7  0xf5b670d4 in ?? ()
#8  0x00000000 in ?? ()
.
Thread 3 (process 6124):
#0  0xffffe405 in __kernel_vsyscall ()
#1  0xf795af15 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib32/libpthread.so.0
#2  0xf6c8bff8 in ?? ()
#3  0xf5b6710c in ?? ()
#4  0xf5b6713c in ?? ()
#5  0x00000000 in ?? ()
.
Thread 2 (process 6125):
#0  0xffffe405 in __kernel_vsyscall ()
#1  0xf795d175 in sem_wait@@GLIBC_2.1 () from /lib32/libpthread.so.0
#2  0xf6c961a8 in ?? ()
#3  0xf5b69d70 in ?? ()
#4  0x00000000 in ?? ()
.
Thread 1 (process 6110):
#0  0xf7958540 in pthread_mutex_lock () from /lib32/libpthread.so.0
#1  0xf6d84168 in ?? ()
#2  0xf5b65024 in ?? ()
#3  0xf72d7de8 in ?? ()
#4  0xffb7b5d8 in ?? ()
#5  0xf72d7de8 in ?? ()
#6  0xf73184a0 in ?? ()
#7  0x0000003d in ?? ()
#8  0xffb7b608 in ?? ()
#9  0xf6ddb582 in ?? ()
#10 0xf5b65020 in ?? ()
#11 0x08069548 in ?? ()
#12 0xf71adfab in ?? ()
#13 0xf72d7de8 in ?? ()
#14 0x080696dc in ?? ()
#15 0x080696c0 in ?? ()
#16 0xffb7b608 in ?? ()
#17 0xf6dde7d0 in ?? ()
#18 0xf7b97680 in ?? ()
#19 0xf780228c in ?? () from /lib32/libc.so.6
#20 0xf7969550 in ?? ()
#21 0xf76b7f25 in ?? ()
#22 0xffffffff in ?? ()
#23 0xf7fc8ff4 in ?? () from /lib/ld-linux.so.2
#24 0xf6dde63b in ?? ()
#25 0xf72d7de8 in ?? ()
#26 0xf73184a0 in ?? ()
#27 0x0000003d in ?? ()
#28 0xffb7b638 in ?? ()
#29 0xf6c85fcd in ?? ()
#30 0xf73184a0 in ?? ()
#31 0x00000005 in ?? ()
#32 0x00000000 in ?? ()