.
Thread 4 (process 7886):
#0  0xffffe405 in __kernel_vsyscall ()
#1  0xf7894f15 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib32/libpthread.so.0
#2  0xf6bbd728 in ?? ()
#3  0xf5a9903c in ?? ()
#4  0xf5a9906c in ?? ()
#5  0xf59272f8 in ?? ()
#6  0xf6bbd5ff in ?? ()
#7  0xf5a990d4 in ?? ()
#8  0x00000008 in ?? ()
#9  0x0000000c in ?? ()
#10 0xf720ae20 in ?? ()
#11 0xf5a9802c in ?? ()
#12 0xf5a98020 in ?? ()
#13 0xf5927338 in ?? ()
#14 0xf6cb6dd8 in ?? ()
#15 0xf5a99020 in ?? ()
#16 0xffffffff in ?? ()
#17 0x00000068 in ?? ()
#18 0x000000e8 in ?? ()
#19 0xf5927350 in ?? ()
#20 0xf7ef2069 in ?? () from /lib/ld-linux.so.2
Backtrace stopped: previous frame inner to this frame (corrupt stack?)
.
Thread 3 (process 7887):
#0  0xffffe405 in __kernel_vsyscall ()
#1  0xf7894f15 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib32/libpthread.so.0
#2  0xf6bbd728 in ?? ()
#3  0xf5a9910c in ?? ()
#4  0xf5a9913c in ?? ()
#5  0x00000000 in ?? ()
.
Thread 2 (process 7888):
#0  0xffffe405 in __kernel_vsyscall ()
#1  0xf7897175 in sem_wait@@GLIBC_2.1 () from /lib32/libpthread.so.0
#2  0xf6bc78d8 in ?? ()
#3  0xf5a9bd70 in ?? ()
#4  0x00000000 in ?? ()
.
Thread 1 (process 7873):
#0  0xf7ac1782 in ?? ()
#1  0x0000019d in ?? ()
#2  0x0000001a in ?? ()
#3  0x0000005a in ?? ()
#4  0xf7aed9de in ?? ()
#5  0x00000001 in ?? ()
#6  0xf5c8f000 in ?? ()
#7  0xffc2a0c8 in ?? ()
#8  0xf6f1017b in ?? ()
#9  0xf5c8f000 in ?? ()
#10 0x00000135 in ?? ()
#11 0x0000019d in ?? ()
#12 0xf720ae20 in ?? ()
#13 0xf5c8f000 in ?? ()
#14 0xf3eaa2dc in ?? ()
#15 0xffc2a068 in ?? ()
#16 0xf6abd4ce in ?? ()
#17 0xaaaaaaaa in ?? ()
#18 0x080ad400 in ?? ()
#19 0x00000000 in ?? ()