Re: [knot-dns-users] debug code compile failure

On 10/03/2013 15:00, Jan Včelák wrote: I saw it happen again, so I got some more gdb output: (gdb) info thread 30 Thread 0x7f7c4cd2a700 (LWP 30601) 0x00007f7c4de7b4ed in write () from /lib64/libpthread.so.0 29 Thread 0x7f7c4ce2b700 (LWP 30602) 0x00007f7c4e08bd3b in update_counter_and_wait () from /usr/lib64/liburcu.so.1 28 Thread 0x7f7c4cf2c700 (LWP 30603) 0x00007f7c4de79b1b in pthread_once () from /lib64/libpthread.so.0 27 Thread 0x7f7c4d02d700 (LWP 30604) 0x00007f7c4de7b4ed in write () from /lib64/libpthread.so.0 26 Thread 0x7f7c4d12e700 (LWP 30605) 0x00007f7c4de7b9c3 in recvfrom () from /lib64/libpthread.so.0 25 Thread 0x7f7c4512e700 (LWP 30606) 0x00007f7c4de7b9c3 in recvfrom () from /lib64/libpthread.so.0 24 Thread 0x7f7c4d22f700 (LWP 30607) 0x00007f7c4de7b9c3 in recvfrom () from /lib64/libpthread.so.0 23 Thread 0x7f7c4ec41700 (LWP 30608) 0x00007f7c4de7b9c3 in recvfrom () from /lib64/libpthread.so.0 22 Thread 0x7f7c4cc29700 (LWP 30609) 0x00007f7c4de7b9c3 in recvfrom () from /lib64/libpthread.so.0 21 Thread 0x7f7c4cb28700 (LWP 30610) 0x00007f7c4de7b9c3 in recvfrom () from /lib64/libpthread.so.0 20 Thread 0x7f7c4ca27700 (LWP 30611) 0x00007f7c4de7b9c3 in recvfrom () from /lib64/libpthread.so.0 19 Thread 0x7f7c4c926700 (LWP 30612) 0x00007f7c4de7b9c3 in recvfrom () from /lib64/libpthread.so.0 18 Thread 0x7f7c4c825700 (LWP 30613) 0x00007f7c4de7b84d in accept () from /lib64/libpthread.so.0 17 Thread 0x7f7c4c724700 (LWP 30614) 0x00007f7c4d93e713 in epoll_wait () from /lib64/libc.so.6 16 Thread 0x7f7c4c623700 (LWP 30615) 0x00007f7c4d93e713 in epoll_wait () from /lib64/libc.so.6 15 Thread 0x7f7c4c522700 (LWP 30616) 0x00007f7c4d93e713 in epoll_wait () from /lib64/libc.so.6 14 Thread 0x7f7c4c421700 (LWP 30617) 0x00007f7c4d93e713 in epoll_wait () from /lib64/libc.so.6 13 Thread 0x7f7c4c320700 (LWP 30618) 0x00007f7c4d93e713 in epoll_wait () from /lib64/libc.so.6 12 Thread 0x7f7c4c21f700 (LWP 30619) 0x00007f7c4d93e713 in epoll_wait () from /lib64/libc.so.6 11 Thread 0x7f7c4c11e700 (LWP 30620) 0x00007f7c4d93e713 in epoll_wait () from /lib64/libc.so.6 10 Thread 0x7f7c47fff700 (LWP 30621) 0x00007f7c4d93e713 in epoll_wait () from /lib64/libc.so.6 9 Thread 0x7f7c47efe700 (LWP 30622) 0x00007f7c4d93e713 in epoll_wait () from /lib64/libc.so.6 8 Thread 0x7f7c47dfd700 (LWP 30623) 0x00007f7c4d93e713 in epoll_wait () from /lib64/libc.so.6 7 Thread 0x7f7c47cfc700 (LWP 30624) 0x00007f7c4d93e713 in epoll_wait () from /lib64/libc.so.6 6 Thread 0x7f7c47bfb700 (LWP 30625) 0x00007f7c4d93e713 in epoll_wait () from /lib64/libc.so.6 5 Thread 0x7f7c47afa700 (LWP 30626) 0x00007f7c4d93e713 in epoll_wait () from /lib64/libc.so.6 4 Thread 0x7f7c479f9700 (LWP 30627) 0x00007f7c4d93e713 in epoll_wait () from /lib64/libc.so.6 3 Thread 0x7f7c478f8700 (LWP 30628) 0x00007f7c4d93e713 in epoll_wait () from /lib64/libc.so.6 2 Thread 0x7f7c477f7700 (LWP 30629) 0x00007f7c4d93e713 in epoll_wait () from /lib64/libc.so.6 * 1 Thread 0x7f7c4ec42880 (LWP 30481) 0x00007f7c4d936f0e in pselect () from /lib64/libc.so.6 (gdb) thread apply all backtrace Thread 30 (Thread 0x7f7c4cd2a700 (LWP 30601)): #0 0x00007f7c4de7b4ed in write () from /lib64/libpthread.so.0 #1 0x0000000000439d1a in ?? () #2 0x000000000040acbb in ?? () #3 0x000000000040ea69 in ?? () #4 0x000000000040c105 in ?? () #5 0x000000000040cb00 in xfr_worker () #6 0x0000000000443e7e in ?? () #7 0x00007f7c4de74851 in start_thread () from /lib64/libpthread.so.0 #8 0x00007f7c4d93e11d in clone () from /lib64/libc.so.6 Thread 29 (Thread 0x7f7c4ce2b700 (LWP 30602)): #0 0x00007f7c4e08bd3b in update_counter_and_wait () from /usr/lib64/liburcu.so.1 #1 0x00007f7c4e08c36d in synchronize_rcu_mb () from /usr/lib64/liburcu.so.1 #2 0x000000000042d85f in ?? () #3 0x000000000040bf1b in ?? () #4 0x000000000040cb00 in xfr_worker () #5 0x0000000000443e7e in ?? () #6 0x00007f7c4de74851 in start_thread () from /lib64/libpthread.so.0 #7 0x00007f7c4d93e11d in clone () from /lib64/libc.so.6 Thread 28 (Thread 0x7f7c4cf2c700 (LWP 30603)): #0 0x00007f7c4de79b1b in pthread_once () from /lib64/libpthread.so.0 #1 0x00007f7c4d954194 in backtrace () from /lib64/libc.so.6 #2 0x00007f7c4d8c5ffb in __libc_message () from /lib64/libc.so.6 #3 0x00007f7c4d8cb916 in malloc_printerr () from /lib64/libc.so.6 #4 0x00007f7c4d8cf394 in _int_malloc () from /lib64/libc.so.6 #5 0x00007f7c4d8cfdd6 in calloc () from /lib64/libc.so.6 #6 0x00007f7c4ea3fd0f in _dl_new_object () from /lib64/ld-linux-x86-64.so.2 #7 0x00007f7c4ea3c19e in _dl_map_object_from_fd () from /lib64/ld-linux-x86-64.so.2 #8 0x00007f7c4ea3d35a in _dl_map_object () from /lib64/ld-linux-x86-64.so.2 #9 0x00007f7c4ea479b4 in dl_open_worker () from /lib64/ld-linux-x86-64.so.2 #10 0x00007f7c4ea43196 in _dl_catch_error () from /lib64/ld-linux-x86-64.so.2 #11 0x00007f7c4ea4746a in _dl_open () from /lib64/ld-linux-x86-64.so.2 #12 0x00007f7c4d97bb40 in do_dlopen () from /lib64/libc.so.6 #13 0x00007f7c4ea43196 in _dl_catch_error () from /lib64/ld-linux-x86-64.so.2 #14 0x00007f7c4d97bc97 in __libc_dlopen_mode () from /lib64/libc.so.6 #15 0x00007f7c4d954095 in init () from /lib64/libc.so.6 #16 0x00007f7c4de79b23 in pthread_once () from /lib64/libpthread.so.0 #17 0x00007f7c4d954194 in backtrace () from /lib64/libc.so.6 #18 0x00007f7c4d8c5ffb in __libc_message () from /lib64/libc.so.6 #19 0x00007f7c4d8cb916 in malloc_printerr () from /lib64/libc.so.6 #20 0x00007f7c4d8ce443 in _int_free () from /lib64/libc.so.6 #21 0x0000000000417605 in ?? () #22 0x0000000000417d10 in ?? () #23 0x0000000000417ef2 in ?? () #24 0x0000000000418023 in node_dump_text () #25 0x000000000043784f in ?? () #26 0x0000000000437846 in ?? () #27 0x00000000004379c5 in ?? () #28 0x000000000043292a in ?? () #29 0x0000000000416d5e in ?? () #30 0x000000000040e3c6 in ?? () #31 0x000000000040e7e8 in ?? () #32 0x000000000040bec8 in ?? () #33 0x000000000040cb00 in xfr_worker () #34 0x0000000000443e7e in ?? () #35 0x00007f7c4de74851 in start_thread () from /lib64/libpthread.so.0 #36 0x00007f7c4d93e11d in clone () from /lib64/libc.so.6 Thread 27 (Thread 0x7f7c4d02d700 (LWP 30604)): #0 0x00007f7c4de7b4ed in write () from /lib64/libpthread.so.0 #1 0x0000000000439d1a in ?? () #2 0x000000000040acbb in ?? () #3 0x000000000040de33 in ?? () #4 0x00000000004091df in ?? () #5 0x0000000000443e7e in ?? () #6 0x00007f7c4de74851 in start_thread () from /lib64/libpthread.so.0 #7 0x00007f7c4d93e11d in clone () from /lib64/libc.so.6 Thread 26 (Thread 0x7f7c4d12e700 (LWP 30605)): #0 0x00007f7c4de7b9c3 in recvfrom () from /lib64/libpthread.so.0 #1 0x00000000004097d4 in ?? () #2 0x00000000004092aa in udp_master () #3 0x0000000000443e7e in ?? () #4 0x00007f7c4de74851 in start_thread () from /lib64/libpthread.so.0 #5 0x00007f7c4d93e11d in clone () from /lib64/libc.so.6 Thread 25 (Thread 0x7f7c4512e700 (LWP 30606)): #0 0x00007f7c4de7b9c3 in recvfrom () from /lib64/libpthread.so.0 #1 0x00000000004097d4 in ?? () #2 0x00000000004092aa in udp_master () #3 0x0000000000443e7e in ?? () #4 0x00007f7c4de74851 in start_thread () from /lib64/libpthread.so.0 #5 0x00007f7c4d93e11d in clone () from /lib64/libc.so.6 Thread 24 (Thread 0x7f7c4d22f700 (LWP 30607)): #0 0x00007f7c4de7b9c3 in recvfrom () from /lib64/libpthread.so.0 #1 0x00000000004097d4 in ?? () #2 0x00000000004092aa in udp_master () #3 0x0000000000443e7e in ?? () #4 0x00007f7c4de74851 in start_thread () from /lib64/libpthread.so.0 #5 0x00007f7c4d93e11d in clone () from /lib64/libc.so.6 Thread 23 (Thread 0x7f7c4ec41700 (LWP 30608)): #0 0x00007f7c4de7b9c3 in recvfrom () from /lib64/libpthread.so.0 #1 0x00000000004097d4 in ?? () #2 0x00000000004092aa in udp_master () #3 0x0000000000443e7e in ?? () #4 0x00007f7c4de74851 in start_thread () from /lib64/libpthread.so.0 #5 0x00007f7c4d93e11d in clone () from /lib64/libc.so.6 Thread 22 (Thread 0x7f7c4cc29700 (LWP 30609)): #0 0x00007f7c4de7b9c3 in recvfrom () from /lib64/libpthread.so.0 #1 0x00000000004097d4 in ?? () #2 0x00000000004092aa in udp_master () #3 0x0000000000443e7e in ?? () #4 0x00007f7c4de74851 in start_thread () from /lib64/libpthread.so.0 #5 0x00007f7c4d93e11d in clone () from /lib64/libc.so.6 Thread 21 (Thread 0x7f7c4cb28700 (LWP 30610)): #0 0x00007f7c4de7b9c3 in recvfrom () from /lib64/libpthread.so.0 #1 0x00000000004097d4 in ?? () #2 0x00000000004092aa in udp_master () #3 0x0000000000443e7e in ?? () #4 0x00007f7c4de74851 in start_thread () from /lib64/libpthread.so.0 #5 0x00007f7c4d93e11d in clone () from /lib64/libc.so.6 Thread 20 (Thread 0x7f7c4ca27700 (LWP 30611)): #0 0x00007f7c4de7b9c3 in recvfrom () from /lib64/libpthread.so.0 #1 0x00000000004097d4 in ?? () #2 0x00000000004092aa in udp_master () #3 0x0000000000443e7e in ?? () #4 0x00007f7c4de74851 in start_thread () from /lib64/libpthread.so.0 #5 0x00007f7c4d93e11d in clone () from /lib64/libc.so.6 Thread 19 (Thread 0x7f7c4c926700 (LWP 30612)): #0 0x00007f7c4de7b9c3 in recvfrom () from /lib64/libpthread.so.0 #1 0x00000000004097d4 in ?? () #2 0x00000000004092aa in udp_master () #3 0x0000000000443e7e in ?? () #4 0x00007f7c4de74851 in start_thread () from /lib64/libpthread.so.0 #5 0x00007f7c4d93e11d in clone () from /lib64/libc.so.6 Thread 18 (Thread 0x7f7c4c825700 (LWP 30613)): #0 0x00007f7c4de7b84d in accept () from /lib64/libpthread.so.0 #1 0x0000000000409def in ?? () #2 0x0000000000409f84 in tcp_loop_master () #3 0x0000000000443e7e in ?? () #4 0x00007f7c4de74851 in start_thread () from /lib64/libpthread.so.0 #5 0x00007f7c4d93e11d in clone () from /lib64/libc.so.6 Thread 17 (Thread 0x7f7c4c724700 (LWP 30614)): #0 0x00007f7c4d93e713 in epoll_wait () from /lib64/libc.so.6 #1 0x000000000043a9eb in ?? () #2 0x000000000040a0bd in tcp_loop_worker () #3 0x0000000000443e7e in ?? () #4 0x00007f7c4de74851 in start_thread () from /lib64/libpthread.so.0 #5 0x00007f7c4d93e11d in clone () from /lib64/libc.so.6 Thread 16 (Thread 0x7f7c4c623700 (LWP 30615)): #0 0x00007f7c4d93e713 in epoll_wait () from /lib64/libc.so.6 #1 0x000000000043a9eb in ?? () #2 0x000000000040a0bd in tcp_loop_worker () #3 0x0000000000443e7e in ?? () #4 0x00007f7c4de74851 in start_thread () from /lib64/libpthread.so.0 #5 0x00007f7c4d93e11d in clone () from /lib64/libc.so.6 Thread 15 (Thread 0x7f7c4c522700 (LWP 30616)): #0 0x00007f7c4d93e713 in epoll_wait () from /lib64/libc.so.6 #1 0x000000000043a9eb in ?? () #2 0x000000000040a0bd in tcp_loop_worker () #3 0x0000000000443e7e in ?? () #4 0x00007f7c4de74851 in start_thread () from /lib64/libpthread.so.0 #5 0x00007f7c4d93e11d in clone () from /lib64/libc.so.6 Thread 14 (Thread 0x7f7c4c421700 (LWP 30617)): #0 0x00007f7c4d93e713 in epoll_wait () from /lib64/libc.so.6 #1 0x000000000043a9eb in ?? () #2 0x000000000040a0bd in tcp_loop_worker () #3 0x0000000000443e7e in ?? () #4 0x00007f7c4de74851 in start_thread () from /lib64/libpthread.so.0 #5 0x00007f7c4d93e11d in clone () from /lib64/libc.so.6 Thread 13 (Thread 0x7f7c4c320700 (LWP 30618)): #0 0x00007f7c4d93e713 in epoll_wait () from /lib64/libc.so.6 #1 0x000000000043a9eb in ?? () #2 0x000000000040a0bd in tcp_loop_worker () #3 0x0000000000443e7e in ?? () #4 0x00007f7c4de74851 in start_thread () from /lib64/libpthread.so.0 #5 0x00007f7c4d93e11d in clone () from /lib64/libc.so.6 Thread 12 (Thread 0x7f7c4c21f700 (LWP 30619)): #0 0x00007f7c4d93e713 in epoll_wait () from /lib64/libc.so.6 #1 0x000000000043a9eb in ?? () #2 0x000000000040a0bd in tcp_loop_worker () #3 0x0000000000443e7e in ?? () #4 0x00007f7c4de74851 in start_thread () from /lib64/libpthread.so.0 #5 0x00007f7c4d93e11d in clone () from /lib64/libc.so.6 Thread 11 (Thread 0x7f7c4c11e700 (LWP 30620)): #0 0x00007f7c4d93e713 in epoll_wait () from /lib64/libc.so.6 #1 0x000000000043a9eb in ?? () #2 0x000000000040a0bd in tcp_loop_worker () #3 0x0000000000443e7e in ?? () #4 0x00007f7c4de74851 in start_thread () from /lib64/libpthread.so.0 #5 0x00007f7c4d93e11d in clone () from /lib64/libc.so.6 Thread 10 (Thread 0x7f7c47fff700 (LWP 30621)): #0 0x00007f7c4d93e713 in epoll_wait () from /lib64/libc.so.6 #1 0x000000000043a9eb in ?? () #2 0x000000000040a0bd in tcp_loop_worker () #3 0x0000000000443e7e in ?? () #4 0x00007f7c4de74851 in start_thread () from /lib64/libpthread.so.0 #5 0x00007f7c4d93e11d in clone () from /lib64/libc.so.6 Thread 9 (Thread 0x7f7c47efe700 (LWP 30622)): #0 0x00007f7c4d93e713 in epoll_wait () from /lib64/libc.so.6 #1 0x000000000043a9eb in ?? () #2 0x000000000040a0bd in tcp_loop_worker () #3 0x0000000000443e7e in ?? () #4 0x00007f7c4de74851 in start_thread () from /lib64/libpthread.so.0 #5 0x00007f7c4d93e11d in clone () from /lib64/libc.so.6 Thread 8 (Thread 0x7f7c47dfd700 (LWP 30623)): #0 0x00007f7c4d93e713 in epoll_wait () from /lib64/libc.so.6 #1 0x000000000043a9eb in ?? () #2 0x000000000040a0bd in tcp_loop_worker () #3 0x0000000000443e7e in ?? () #4 0x00007f7c4de74851 in start_thread () from /lib64/libpthread.so.0 #5 0x00007f7c4d93e11d in clone () from /lib64/libc.so.6 Thread 7 (Thread 0x7f7c47cfc700 (LWP 30624)): #0 0x00007f7c4d93e713 in epoll_wait () from /lib64/libc.so.6 #1 0x000000000043a9eb in ?? () #2 0x000000000040a0bd in tcp_loop_worker () #3 0x0000000000443e7e in ?? () #4 0x00007f7c4de74851 in start_thread () from /lib64/libpthread.so.0 #5 0x00007f7c4d93e11d in clone () from /lib64/libc.so.6 Thread 6 (Thread 0x7f7c47bfb700 (LWP 30625)): #0 0x00007f7c4d93e713 in epoll_wait () from /lib64/libc.so.6 #1 0x000000000043a9eb in ?? () #2 0x000000000040a0bd in tcp_loop_worker () #3 0x0000000000443e7e in ?? () #4 0x00007f7c4de74851 in start_thread () from /lib64/libpthread.so.0 #5 0x00007f7c4d93e11d in clone () from /lib64/libc.so.6 Thread 5 (Thread 0x7f7c47afa700 (LWP 30626)): #0 0x00007f7c4d93e713 in epoll_wait () from /lib64/libc.so.6 #1 0x000000000043a9eb in ?? () #2 0x000000000040a0bd in tcp_loop_worker () #3 0x0000000000443e7e in ?? () #4 0x00007f7c4de74851 in start_thread () from /lib64/libpthread.so.0 #5 0x00007f7c4d93e11d in clone () from /lib64/libc.so.6 Thread 4 (Thread 0x7f7c479f9700 (LWP 30627)): #0 0x00007f7c4d93e713 in epoll_wait () from /lib64/libc.so.6 #1 0x000000000043a9eb in ?? () #2 0x000000000040a0bd in tcp_loop_worker () #3 0x0000000000443e7e in ?? () #4 0x00007f7c4de74851 in start_thread () from /lib64/libpthread.so.0 #5 0x00007f7c4d93e11d in clone () from /lib64/libc.so.6 Thread 3 (Thread 0x7f7c478f8700 (LWP 30628)): #0 0x00007f7c4d93e713 in epoll_wait () from /lib64/libc.so.6 #1 0x000000000043a9eb in ?? () #2 0x000000000040a0bd in tcp_loop_worker () #3 0x0000000000443e7e in ?? () #4 0x00007f7c4de74851 in start_thread () from /lib64/libpthread.so.0 #5 0x00007f7c4d93e11d in clone () from /lib64/libc.so.6 Thread 2 (Thread 0x7f7c477f7700 (LWP 30629)): #0 0x00007f7c4d93e713 in epoll_wait () from /lib64/libc.so.6 #1 0x000000000043a9eb in ?? () #2 0x000000000040a0bd in tcp_loop_worker () #3 0x0000000000443e7e in ?? () #4 0x00007f7c4de74851 in start_thread () from /lib64/libpthread.so.0 #5 0x00007f7c4d93e11d in clone () from /lib64/libc.so.6 Thread 1 (Thread 0x7f7c4ec42880 (LWP 30481)): #0 0x00007f7c4d936f0e in pselect () from /lib64/libc.so.6 #1 0x000000000040782e in ?? () #2 0x0000000000404e54 in ?? () #3 0x00007f7c4d874cdd in __libc_start_main () from /lib64/libc.so.6 #4 0x0000000000404829 in ?? () #5 0x00007fffa571cb68 in ?? () #6 0x000000000000001c in ?? () #7 0x0000000000000003 in ?? () #8 0x00007fffa571cf0e in ?? () #9 0x00007fffa571cf1e in ?? () #10 0x00007fffa571cf21 in ?? () #11 0x0000000000000000 in ?? ()