Code that uses pthreads hangs (mysql, python etc) Fix: Unknown How-To-Repeat: -bash-2.05b$ cat conftest.c ########################################## #include <pthread.h> void* routine(void* p){return NULL;} int main(){ pthread_t p; if(pthread_create(&p,NULL,routine,NULL)!=0) return 1; (void)pthread_detach(p); return 0; } ########################################### -bash-2.05b$ gcc -o test -lc_r conftest.c -bash-2.05b$ truss ./test mmap(0x0,7056,0x3,0x1000,-1,0x0) = 1075978240 (0x40222000) munmap(0x40222000,0x1b90) = 0 (0x0) __sysctl(0x7fdfffff4f0,0x2,0x40323110,0x7fdfffff4e8,0x0,0x0) = 0 (0x0) mmap(0x0,32768,0x3,0x1002,-1,0x0) = 1075978240 (0x40222000) geteuid() = 1002 (0x3ea) getuid() = 1002 (0x3ea) getegid() = 1001 (0x3e9) getgid() = 1001 (0x3e9) mmap(0x0,40960,0x3,0x1002,-1,0x0) = 1076011008 (0x4022a000) open("/var/run/ld-elf.so.hints",0x0,010010540070) = 3 (0x3) read(0x3,0x7fdfffff780,0x80) = 128 (0x80) lseek(3,0x80,-1) = 128 (0x80) read(0x3,0x4022e000,0x57) = 87 (0x57) close(3) = 0 (0x0) access("/usr/lib/libc_r.so.5",0) = 0 (0x0) open("/usr/lib/libc_r.so.5",0x0,07) = 3 (0x3) fstat(3,0x7fdfffff840) = 0 (0x0) read(0x3,0x7fdffffd780,0x2000) = 8192 (0x2000) mmap(0x0,1220608,0x5,0x20002,3,0x0) = 1077043200 (0x40326000) mprotect(0x40342000,0x2000,0x7) = 0 (0x0) mprotect(0x40342000,0x2000,0x5) = 0 (0x0) mmap(0x40442000,16384,0x7,0x12,3,0x0) = 1078206464 (0x40442000) mmap(0x40446000,40960,0x7,0x1012,-1,0x0) = 1078222848 (0x40446000) close(3) = 0 (0x0) access("/usr/lib/libc.so.5",0) = 0 (0x0) open("/usr/lib/libc.so.5",0x0,0137) = 3 (0x3) fstat(3,0x7fdfffff840) = 0 (0x0) read(0x3,0x7fdffffd780,0x2000) = 8192 (0x2000) mmap(0x0,2154496,0x5,0x20002,3,0x0) = 1078263808 (0x40450000) mprotect(0x40538000,0x2000,0x7) = 0 (0x0) mprotect(0x40538000,0x2000,0x5) = 0 (0x0) mmap(0x40638000,73728,0x7,0x12,3,0x0) = 1080262656 (0x40638000) mmap(0x4064a000,81920,0x7,0x1012,-1,0x0) = 1080336384 (0x4064a000) close(3) = 0 (0x0) mmap(0x0,304,0x3,0x1000,-1,0x0) = 1076051968 (0x40234000) munmap(0x40234000,0x130) = 0 (0x0) mmap(0x0,9456,0x3,0x1000,-1,0x0) = 1076051968 (0x40234000) munmap(0x40234000,0x24f0) = 0 (0x0) mmap(0x0,43072,0x3,0x1000,-1,0x0) = 1076051968 (0x40234000) munmap(0x40234000,0xa840) = 0 (0x0) __sysctl(0x7fdfffff550,0x2,0x4065b218,0x7fdfffff548,0x0,0x0) = 0 (0x0) getpid() = 33200 (0x81b0) fcntl(0x0,0x3,0x0) = 2 (0x2) fcntl(0x1,0x3,0x0) = 2 (0x2) fcntl(0x2,0x3,0x0) = 2 (0x2) pipe() = 3 (0x3) fcntl(0x3,0x3,0x0) = 2 (0x2) fcntl(0x3,0x4,0x6) = 0 (0x0) fcntl(0x4,0x3,0x0) = 2 (0x2) fcntl(0x4,0x4,0x6) = 0 (0x0) readlink("/etc/malloc.conf",0x7fdfffff380,63) ERR#2 'No such file or directory' issetugid() = 0 (0x0) getuid() = 1002 (0x3ea) getgid() = 1001 (0x3e9) mmap(0x0,8192,0x3,0x1002,-1,0x0) = 1076051968 (0x40234000) break(0x200d68) = 0 (0x0) break(0x200d68) = 0 (0x0) break(0x204000) = 0 (0x0) break(0x204000) = 0 (0x0) break(0x206000) = 0 (0x0) break(0x206000) = 0 (0x0) break(0x208000) = 0 (0x0) break(0x208000) = 0 (0x0) break(0x20a000) = 0 (0x0) break(0x20a000) = 0 (0x0) break(0x20c000) = 0 (0x0) __sysctl(0x7fdfffff670,0x2,0x40443370,0x7fdfffff628,0x0,0x0) = 0 (0x0) mmap(0x7fdffefe000,8192,0x0,0x1000,-1,0x0) = -1056768 (0xffefe000) break(0x20c000) = 0 (0x0) break(0x20e000) = 0 (0x0) gettimeofday(0x40443390,0x0) = 0 (0x0) sysarch(0x2,0x4063e100) = 0 (0x0) sigaction(SIGHUP,0x0,0x40449420) = 0 (0x0) sigaction(SIGINT,0x0,0x40449440) = 0 (0x0) sigaction(SIGQUIT,0x0,0x40449460) = 0 (0x0) sigaction(SIGILL,0x0,0x40449480) = 0 (0x0) sigaction(SIGTRAP,0x0,0x404494a0) = 0 (0x0) sigaction(SIGABRT,0x0,0x404494c0) = 0 (0x0) sigaction(SIGEMT,0x0,0x404494e0) = 0 (0x0) sigaction(SIGFPE,0x0,0x40449500) = 0 (0x0) sigaction(SIGBUS,0x0,0x40449540) = 0 (0x0) sigaction(SIGSEGV,0x0,0x40449560) = 0 (0x0) sigaction(SIGSYS,0x0,0x40449580) = 0 (0x0) sigaction(SIGPIPE,0x0,0x404495a0) = 0 (0x0) sigaction(SIGALRM,0x0,0x404495c0) = 0 (0x0) sigaction(SIGTERM,0x0,0x404495e0) = 0 (0x0) sigaction(SIGURG,0x0,0x40449600) = 0 (0x0) sigaction(SIGTSTP,0x0,0x40449640) = 0 (0x0) sigaction(SIGCONT,0x0,0x40449660) = 0 (0x0) sigaction(SIGCHLD,0x0,0x40449680) = 0 (0x0) sigaction(SIGTTIN,0x0,0x404496a0) = 0 (0x0) sigaction(SIGTTOU,0x0,0x404496c0) = 0 (0x0) sigaction(SIGIO,0x0,0x404496e0) = 0 (0x0) sigaction(SIGXCPU,0x0,0x40449700) = 0 (0x0) sigaction(SIGXFSZ,0x0,0x40449720) = 0 (0x0) sigaction(SIGVTALRM,0x0,0x40449740) = 0 (0x0) sigaction(SIGPROF,0x0,0x40449760) = 0 (0x0) sigaction(SIGWINCH,0x0,0x40449780) = 0 (0x0) sigaction(SIGINFO,0x0,0x404497a0) = 0 (0x0) sigaction(SIGUSR1,0x0,0x404497c0) = 0 (0x0) sigaction(SIGUSR2,0x0,0x404497e0) = 0 (0x0) sigaction(SIGPROF,0x7fdfffff630,0x0) = 0 (0x0) sigaction(SIGINFO,0x7fdfffff630,0x0) = 0 (0x0) sigaction(SIGCHLD,0x7fdfffff630,0x0) = 0 (0x0) sigprocmask(0x3,0x0,0x40443418) = 0 (0x0) __sysctl(0x7fdfffff670,0x2,0x7fdfffff650,0x7fdfffff628,0x0,0x0) = 0 (0x0) getdtablesize() = 3405 (0xd4d) break(0x20e000) = 0 (0x0) break(0x216000) = 0 (0x0) break(0x216000) = 0 (0x0) break(0x21e000) = 0 (0x0) break(0x21e000) = 0 (0x0) break(0x220000) = 0 (0x0) fcntl(0x0,0x4,0x6) = 0 (0x0) fcntl(0x1,0x4,0x6) = 0 (0x0) fcntl(0x2,0x4,0x6) = 0 (0x0) sigprocmask(0x1,0x40322f40,0x7fdfffff8b0) = 0 (0x0) sigprocmask(0x3,0x40322f50,0x0) = 0 (0x0) sysarch(0x1,0x40639390) = 0 (0x0) mmap(0x7fdffeee000,65536,0x3,0x400,-1,0x0) = -1122304 (0xffeee000) setitimer(0x2,0x7fdfffff930,0x0) = 0 (0x0) SIGNAL 27 SIGNAL 27 gettimeofday(0x40443390,0x0) = 0 (0x0) sigprocmask(0x3,0x40443418,0x0) = 0 (0x0) sigreturn(0x7fdfffff250) = 1076043776 (0x40232000) poll(0x216000,0x0,0x0) = 0 (0x0) Nothing else happens until I Ctrl-C it. Note that in this case I waited about 3 minutes. ^CSIGNAL 2 poll(0x216000,0x1,0xffffffffffffffff) ERR#4 'Interrupted system call' SIGNAL 2 SIGNAL 2 process exit, rval = 2
On Tue, 2003/06/24 at 10:34:17 +0100, Steven Haywood wrote: > >Description: > Code that uses pthreads hangs (mysql, python etc) > > >How-To-Repeat: > > -bash-2.05b$ cat conftest.c > ########################################## > #include <pthread.h> > > void* routine(void* p){return NULL;} > > int main(){ > pthread_t p; > if(pthread_create(&p,NULL,routine,NULL)!=0) > return 1; > (void)pthread_detach(p); > return 0; > } > ########################################### > -bash-2.05b$ gcc -o test -lc_r conftest.c > -bash-2.05b$ truss ./test > mmap(0x0,7056,0x3,0x1000,-1,0x0) = 1075978240 (0x40222000) > munmap(0x40222000,0x1b90) = 0 (0x0) > __sysctl(0x7fdfffff4f0,0x2,0x40323110,0x7fdfffff4e8,0x0,0x0) = 0 (0x0) > [...] > setitimer(0x2,0x7fdfffff930,0x0) = 0 (0x0) > SIGNAL 27 > SIGNAL 27 > gettimeofday(0x40443390,0x0) = 0 (0x0) > sigprocmask(0x3,0x40443418,0x0) = 0 (0x0) > sigreturn(0x7fdfffff250) = 1076043776 (0x40232000) > poll(0x216000,0x0,0x0) = 0 (0x0) > > > Nothing else happens until I Ctrl-C it. Note that in this case I waited about 3 minutes. > ^CSIGNAL 2 > poll(0x216000,0x1,0xffffffffffffffff) ERR#4 'Interrupted system call' > SIGNAL 2 > SIGNAL 2 > process exit, rval = 2 I cannot reproduce this. When the process is hanging, does it loop (using all available CPU), or is it sleeping (and if it is, in which state)? Can you please also try pressing ^T? This should make the process generate a state dump in /tmp/uthread.dump.<pid>.<serial>, which should be interesting. - Thomas -- Thomas Moestl <t.moestl@tu-bs.de> http://www.tu-bs.de/~y0015675/ <tmm@FreeBSD.org> http://people.FreeBSD.org/~tmm/ PGP fingerprint: 1C97 A604 2BD0 E492 51D0 9C0F 1FE6 4F1D 419C 776C
State Changed From-To: open->closed Close, not reproducible, no reply from originator after feedback was provided.