. Thread 6 (process 6896): #0 0xffffe405 in __kernel_vsyscall () #1 0xf78cff15 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib32/libpthread.so.0 #2 0xf6bf8728 in ?? () #3 0xf5ad403c in ?? () #4 0xf5ad406c in ?? () #5 0xf59692f8 in ?? () #6 0xf6bf85ff in ?? () #7 0xf5ad40d4 in ?? () #8 0x00000004 in ?? () #9 0x00000008 in ?? () #10 0xf7245e20 in ?? () #11 0xf5ad302c in ?? () #12 0xf5ad3020 in ?? () #13 0xf5969338 in ?? () #14 0xf6cf1dd8 in ?? () #15 0xf5ad4020 in ?? () #16 0xffffffff in ?? () #17 0x00000008 in ?? () #18 0x00000074 in ?? () #19 0xf5969350 in ?? () #20 0xf7f30069 in ?? () from /lib/ld-linux.so.2 Backtrace stopped: previous frame inner to this frame (corrupt stack?) . Thread 5 (process 6897): #0 0xffffe405 in __kernel_vsyscall () #1 0xf78cff15 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib32/libpthread.so.0 #2 0xf6bf8728 in ?? () #3 0xf5ad410c in ?? () #4 0xf5ad413c in ?? () #5 0x00000000 in ?? () . Thread 4 (process 6898): #0 0xffffe405 in __kernel_vsyscall () #1 0xf78d2175 in sem_wait@@GLIBC_2.1 () from /lib32/libpthread.so.0 #2 0xf6c028d8 in ?? () #3 0xf5ad6d70 in ?? () #4 0x00000000 in ?? () . Thread 3 (process 6909): #0 0xffffe405 in __kernel_vsyscall () #1 0xf78d0242 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib32/libpthread.so.0 #2 0xf6bf86bf in ?? () #3 0xf3d25db4 in ?? () #4 0xf3d25de4 in ?? () #5 0xf3d25dfc in ?? () #6 0x081b6738 in ?? () #7 0xf3d25db4 in ?? () #8 0xf77d3e18 in _IO_sgetn_internal () from /lib32/libc.so.6 #9 0xf6faf06f in ?? () #10 0x00000014 in ?? () #11 0xf630cdf0 in ?? () #12 0x0000000b in ?? () #13 0x00000000 in ?? () . Thread 2 (process 6912): #0 0xffffe405 in __kernel_vsyscall () #1 0xf783ad77 in poll () from /lib32/libc.so.6 #2 0xf4940e72 in ?? () #3 0x081b65f8 in ?? () #4 0x00000002 in ?? () #5 0x00000037 in ?? () #6 0x00000000 in ?? () . Thread 1 (process 6879): #0 0xf7afc782 in ?? () #1 0x00000084 in ?? () #2 0x00000002 in ?? () #3 0x00000038 in ?? () #4 0xf7b289de in ?? () #5 0x00000001 in ?? () #6 0xf5b06000 in ?? () #7 0xffaf3f98 in ?? () #8 0xf6f4b17b in ?? () #9 0xf5b06000 in ?? () #10 0x080fc368 in ?? () #11 0x000026fc in ?? () #12 0xf7245e20 in ?? () #13 0xf5b06000 in ?? () #14 0x08157940 in ?? () #15 0xffaf3f38 in ?? () #16 0xf6af84ce in ?? () #17 0xaaaaaaaa in ?? () #18 0x080b2f38 in ?? () #19 0xf789c540 in ?? () from /lib32/libc.so.6 #20 0xf6e28021 in ?? () #21 0xf7245e20 in ?? () #22 0x08173008 in ?? () #23 0xffaf3f98 in ?? () #24 0xf6bce401 in ?? () #25 0xf5b06000 in ?? () #26 0x00000050 in ?? () #27 0xf78cd531 in pthread_mutex_lock () from /lib32/libpthread.so.0 Backtrace stopped: previous frame inner to this frame (corrupt stack?)