Bug #42890
Updated by Kefu Chai over 4 years ago
exit() will call pthread_cond_destroy attempting to destroy dpdk::eal::cond upon which other threads are currently blocked results in undefine behavior. Link different libc version test, libc-2.17 can exit, libc-2.27 will deadlock, the call stack is as follows: <pre> Thread 3 (Thread 0xffff7e5749f0 (LWP 62213)): #0 0x0000ffff7f3c422c in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0xaaaadc0e30f4 <dpdk::eal::cond+44>) at ../sysdeps/unix/sysv/linux/futex-internal.h:88 #1 __pthread_cond_wait_common (abstime=0x0, mutex=0xaaaadc0e30f8 <dpdk::eal::lock>, cond=0xaaaadc0e30c8 <dpdk::eal::cond>) at pthread_cond_wait.c:502 #2 __pthread_cond_wait (cond=0xaaaadc0e30c8 <dpdk::eal::cond>, mutex=0xaaaadc0e30f8 <dpdk::eal::lock>) at pthread_cond_wait.c:655 #3 0x0000ffff7f1f1f80 in std::condition_variable::wait(std::unique_lock<std::mutex>&) () from /usr/lib/aarch64-linux-gnu/libstdc++.so.6 #4 0x0000aaaad37f5078 in dpdk::eal::<lambda()>::operator()(void) const (__closure=<optimized out>, __closure=<optimized out>) at ./src/msg/async/dpdk/dpdk_rte.cc:136 #5 0x0000ffff7f1f7ed4 in ?? () from /usr/lib/aarch64-linux-gnu/libstdc++.so.6 #6 0x0000ffff7f3be088 in start_thread (arg=0xffffe73e197f) at pthread_create.c:463 #7 0x0000ffff7efc74ec in thread_start () at ../sysdeps/unix/sysv/linux/aarch64/clone.S:78 Thread 1 (Thread 0xffff7ee3b010 (LWP 62200)): #0 0x0000ffff7f3c3c38 in futex_wait (private=<optimized out>, expected=12, futex_word=0xaaaadc0e30ec <dpdk::eal::cond+36>) at ../sysdeps/unix/sysv/linux/futex-internal.h:61 #1 futex_wait_simple (private=<optimized out>, expected=12, futex_word=0xaaaadc0e30ec <dpdk::eal::cond+36>) at ../sysdeps/nptl/futex-internal.h:135 #2 __pthread_cond_destroy (cond=0xaaaadc0e30c8 <dpdk::eal::cond>) at pthread_cond_destroy.c:54 #3 0x0000ffff7ef2be34 in __run_exit_handlers (status=-6, listp=0xffff7f04a5a0 <__exit_funcs>, run_list_atexit=255, run_list_atexit@entry=true, run_dtors=run_dtors@entry=true) at exit.c:108 #4 0x0000ffff7ef2bf6c in __GI_exit (status=<optimized out>) at exit.c:139 #5 0x0000ffff7ef176e4 in __libc_start_main (main=0x0, argc=0, argv=0x0, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=<optimized out>) at ../csu/libc-start.c:344 #6 0x0000aaaad2939db0 in _start () at ./src/include/buffer.h:642 Backtrace stopped: previous frame identical to this frame (corrupt stack?) </pre>