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Report 2092 Actions Problem Report Number 2092 Submitter's Classification Test Suite problem State Resolved Resolution Test Suite Deficiency (TSD) Problem Resolution ID TSD.X.1063 Raised 1970-01-01 08:00 Updated 2003-03-13 08:00 Published null Product Standard Internationalised System Calls and Libraries Extended V2 (UNIX 98) Certification Program The Open Brand certification program Test Suite VSTH version 5.2.1 Test Identification PTHR.os/cancel/pthread_cancel 9 Problem Summary TSD5TH.00083 The test aborts when testing pthread_rwlock_trywrlock. This can be seen by looking at a stack trace from the core file generated: pthread_rwlock_trywrlock_cef(0,ffffffffffffffff,0,1001817d8,0,0) + 24 ... Problem Text The test aborts when testing pthread_rwlock_trywrlock. This can be seen by looking at a stack trace from the core file generated: pthread_rwlock_trywrlock_cef(0,ffffffffffffffff,0,1001817d8,0,0) + 24 vsth_cpt(1001817d8,ffffffffffffffff,ffffffff7ffff6f8,ffffffff7ffff6f4,10018e4c8,3ff) + 218 tet_main(1,ffffffff7ffff990,0,0,1,fffffffffffffffc) + 1f8 tet_tcmc_main(6,ffffffff7ffff968,0,10006aea8,10006b870,0) + 3f8 main(6,ffffffff7ffff968,ffffffff7ffff9a0,0,0,100000000) + 98 If you look at the code for pthread_rwlock_trywrlock_cef you see it is trying to unlock a read-write lock: int pthread_rwlock_trywrlock_cef() { (void) pthread_rwlock_unlock(&Prwltwl_rwl); (void) pthread_rwlock_destroy(&Prwltwl_rwl); return(0); } In the function vsth_cpt, the thread which calls pthread_rwlock_trywrlock_cef is created. However, it never obtains ownership of rwlock. The result is thread_rwlock_trywrlock_cef attempts to unlock a lock it does not own. According to System Interfaces and Headers, Issue 5, Vol 1, description for pthread_rwlock_unlock is as follows: "Results are undefined if the read-write lock rwlock is not held by the calling thread." The SIGABRT is generated when the thread fails to unlock the lock. Test Output ************************************************************************ /tset/PTHR.os/cancel/pthread_cancel/T.pthread_cancel 9 Unresolved Test Information: A cancellation point shall not occur in the following XSH5 functions FD_ISSET, FD_SET, FD_ZERO FD_CLR, _longjmp, _setjmp _tolower, _toupper, a64l acosh, advance, asinh atanh, basename, bcmp bcopy, brk, bsd_signal btowc, bzero, cbrt chroot, compile, confstr crypt, cuserid, dbm_clearerr dbm_error, dbm_firstkey, dirname dlerror, dlsym, drand48 ecvt, erand48, erf erfc, expm1, fattach fchdir, fchown, fcvt fdetach, ffs, fmtmsg fnmatch, fstatvfs, ftime ftok, fwide, gamma gcvt, getcontext, getdate getdtablesize, gethostid, getitimer getopt, getpagesize, getpass getpgid, getpriority, getrlimit getrusage, getsid, getsubopt gettimeofday, getwd, glob grantpt, hcreate, hdestroy hsearch, hypot, iconv ilogb, index, initstate insque, isastream, isnan iswalnum, iswalpha, iswcntrl iswdigit, iswgraph, iswlower iswprint, iswpunct, iswspace iswupper, iswwctype, j0 j1, jn, jrand48 killpg, l64a, lchown lcong48, lfind, lgamma localconv, log1p, logb lrand48, lsearch, lstat makecontext, mbrlen, mbrtowc mbsinit, mbsrtowcs, mbstowcs memccpy, mknod, mktemp mrand48, msgctl, msgget nextafter, nice, nl_langinfo nrand48, pthread_attr_getguardsize, pthread_attr_setguardsize pthread_getconcurrency, pthread_mutexattr_gettype, pthread_mutexattr_settype pthread_rwlock_destroy, pthread_rwlock_init, pthread_rwlock_rdlock pthread_rwlock_tryrdlock, pthread_rwlock_trywrlock, pthread_rwlock_unlock pthread_rwlock_wrlock, pthread_rwlockattr_destroy, pthread_rwlockattr_getpshared pthread_rwlockattr_init, pthread_rwlockattr_setpshared, pthread_setconcurrency ptsname, putenv, random re_comp, re_exec, readlink realpath, regcmp, regcomp regerror, regex, regexec regfree, remainder, remque rindex, rint, sbrk scalb, seed48, semctl semget, setcontext, setitimer setlogmask, setpgrp, setpriority setregid, setrlimit, setstate shmat, shmctl, shmdt shmget, sigaltstack, sighold sigignore, siginterrupt, signgam sigrelse, sigset sigstack snprintf, srand48, srandom statvfs, step, strcasecmp strdup, strfmon, strncasecmp strptime, swab, swapcontext swprintf, swscanf, symlink sync, tcgetsid, tdelete telldir, tempnam, tfind toascii, towctrans, towlower towupper, truncate, tsearch ttyslot, twalk, ualarm ulimit, unlockpt, utimes valloc, vfork, vsnprintf vswprintf, wcrtomb, wcscat wcschr, wcscmp, wcscoll wcscpy, wcscspn, wcsftime wcslen, wcsncat, wcsncmp wcsncpy, wcspbrk, wcsrchr wcsrtombs, wcsspn, wcsstr wcstod, wcstok, wcstol wcstoul, wcswcs, wcswidth wcsxfrm, wctob, wctrans wctype, wcwidth, wmemchr wmemcmp, wmemcpy, wmemmove wmemset, wordexp, y0 y1, yn XCAE ref: Component PTHREAD_CANCEL Assertion 9(A) child process was terminated by signal 6 (SIGABRT) ************************************************************************ Review Information Review Type TSMA Review Start Date null Completed null Status Complete Review Recommendation No Resolution Given Review Response A test suite deficiency is recommended Review Type SA Review Start Date null Completed null Status Complete Review Resolution Test Suite Deficiency (TSD) Review Conclusion This is an agreed Test Suite Deficiency. 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