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Problem Report 2538 Details

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Report 2538 Actions Problem Report Number 2538 Submitter's Classification Test Suite problem State Resolved Resolution Rejected (REJ) Problem Resolution ID REJ.X.0682 Raised 2007-12-13 03:27 Updated 2007-12-21 14:30 Published 2007-12-21 14:30 Product Standard Internationalised System Calls and Libraries Extended V3 (UNIX 03) Certification Program The Open Brand certification program Test Suite VSART version 1.1.7 Test Identification various rwlock tests, see Test output for complete list. Specification Base Definitions Issue 6 Location in Spec XSH section, Lines 1905-1911 of the combined PDF SUVs3_TC2 standard. Problem Summary The tests expect that unprivileged users can change the priority of threads scheduled under SYSTEM scope and SCHED_RR scheduling policy. Our implementation doesn't allow this. Problem Text After correcting the following problem in the vrtxlib, it can be seen that vrtx_pthread_create() is failing with an EPERM error. Line 268 in SRC/common/vrtxlib/thrdsafe.c is in_rpt("vrtx_pthread_create[%d] failed, error ", cnt, rval); should be in_rpt("vrtx_pthread_create[%d] failed, error: %d ", cnt, rval); According to SUSv3 an EPERM error must be returned as follows: ERRORS The pthread_create( ) function shall fail if: [EPERM] The caller does not have appropriate permission to set the required scheduling parameters or scheduling policy. Looking at the failing tests, the following attributes are being set in the VRTX library function vrtx_pthread_create() for the thread: PTHREAD_CREATE_JOINABLE SCHED_RR PTHREAD_EXPLICIT_SCHED PTHREAD_SCOPE_PROCESS The EPERM error is the result of trying to create the thread with SCHED_RR scheduling policy under PTHREAD_SCOPE_SYSTEM. Under SYSTEM scope, the scheduling is done within the kernel itself. Allowing an unprivileged user to set the scheduling priority of the kernel threads could lead to security problems. So on our implementation an unpriviliged user cannot change the priority under SYSTEM scope. As the pthread_create() EPERM definition specifically states it use is for cases where the caller does not have permission to set the scheduling policy; we believe the restriction of SCHED_RR to users with appropriate privilege is allowed by the SUSv3 TC2 standard. I have opened this against VSART, but this is causing failures in other Test Suites too. Test Output POSIX_art.os/synchobjects_rwlocks/pthread_rwlock_rdlock 12 POSIX_art.os/synchobjects_rwlocks/pthread_rwlock_tryrdlock 11 POSIX_art.os/synchobjects_rwlocks/pthread_rwlock_trywrlock 9 POSIX_art.os/synchobjects_rwlocks/pthread_rwlock_unlock 9 POSIX_art.os/synchobjects_rwlocks/pthread_rwlock_wrlock 8 POSIX_art.os/synchobjects_rwlocks/pthread_rwlockattr_getpshared 4 POSIX_art.os/synchobjects_rwlocks/pthread_rwlockattr_setpshared 7 ************************************************************************ /tset/POSIX_art.os/synchobjects_rwlocks/pthread_rwlock_rdlock/T.pthread_ rwlock_rdlock 12 Unresolved Test Description: If {_POSIX_READER_WRITER_LOCKS} is defined: pthread_rwlock_rdlock(lock) is thread safe. Test Information: vrtx_pthread_create[0] failed, error vrtx_pthread_create[1] failed, error vrtx_pthread_create[2] failed, error vrtx_pthread_create[3] failed, error vrtx_pthread_create[4] failed, error vrtx_pthread_create[5] failed, error vrtx_pthread_create[6] failed, error vrtx_pthread_create[7] failed, error vrtx_pthread_create[8] failed, error vrtx_pthread_create[9] failed, error vrtx_pthread_create[10] failed, error vrtx_pthread_create[11] failed, error vrtx_pthread_create[12] failed, error vrtx_pthread_create[13] failed, error vrtx_pthread_create[14] failed, error vrtx_pthread_create[15] failed, error vrtx_pthread_join[0] failed, error 3 vrtx_pthread_join[1] failed, error 3 vrtx_pthread_join[2] failed, error 3 vrtx_pthread_join[3] failed, error 3 vrtx_pthread_join[4] failed, error 3 vrtx_pthread_join[5] failed, error 3 vrtx_pthread_join[6] failed, error 3 vrtx_pthread_join[7] failed, error 3 vrtx_pthread_join[8] failed, error 3 vrtx_pthread_join[9] failed, error 3 vrtx_pthread_join[10] failed, error 3 vrtx_pthread_join[11] failed, error 3 vrtx_pthread_join[12] failed, error 3 vrtx_pthread_join[13] failed, error 3 vrtx_pthread_join[14] failed, error 3 vrtx_pthread_join[15] failed, error 3 ************************************************************************ ************************************************************************ /tset/POSIX_art.os/synchobjects_rwlocks/pthread_rwlock_tryrdlock/T.pthre ad_rwlock_tryrdlock 11 Unresolved Test Description: If {_POSIX_READER_WRITER_LOCKS} is defined: pthread_rwlock_tryrdlock(lock) is thread safe. Test Information: vrtx_pthread_create[0] failed, error vrtx_pthread_create[1] failed, error vrtx_pthread_create[2] failed, error vrtx_pthread_create[3] failed, error vrtx_pthread_create[4] failed, error vrtx_pthread_create[5] failed, error vrtx_pthread_create[6] failed, error vrtx_pthread_create[7] failed, error vrtx_pthread_create[8] failed, error vrtx_pthread_create[9] failed, error vrtx_pthread_create[10] failed, error vrtx_pthread_create[11] failed, error vrtx_pthread_create[12] failed, error vrtx_pthread_create[13] failed, error vrtx_pthread_create[14] failed, error vrtx_pthread_create[15] failed, error vrtx_pthread_join[0] failed, error 3 vrtx_pthread_join[1] failed, error 3 vrtx_pthread_join[2] failed, error 3 vrtx_pthread_join[3] failed, error 3 vrtx_pthread_join[4] failed, error 3 vrtx_pthread_join[5] failed, error 3 vrtx_pthread_join[6] failed, error 3 vrtx_pthread_join[7] failed, error 3 vrtx_pthread_join[8] failed, error 3 vrtx_pthread_join[9] failed, error 3 vrtx_pthread_join[10] failed, error 3 vrtx_pthread_join[11] failed, error 3 vrtx_pthread_join[12] failed, error 3 vrtx_pthread_join[13] failed, error 3 vrtx_pthread_join[14] failed, error 3 vrtx_pthread_join[15] failed, error 3 ************************************************************************ ************************************************************************ /tset/POSIX_art.os/synchobjects_rwlocks/pthread_rwlock_trywrlock/T.pthre ad_rwlock_trywrlock 9 Unresolved Test Description: If {_POSIX_READER_WRITER_LOCKS} is defined: pthread_rwlock_trywrlock(lock) is thread safe. Test Information: vrtx_pthread_create[0] failed, error vrtx_pthread_create[1] failed, error vrtx_pthread_create[2] failed, error vrtx_pthread_create[3] failed, error vrtx_pthread_create[4] failed, error vrtx_pthread_create[5] failed, error vrtx_pthread_create[6] failed, error vrtx_pthread_create[7] failed, error vrtx_pthread_create[8] failed, error vrtx_pthread_create[9] failed, error vrtx_pthread_create[10] failed, error vrtx_pthread_create[11] failed, error vrtx_pthread_create[12] failed, error vrtx_pthread_create[13] failed, error vrtx_pthread_create[14] failed, error vrtx_pthread_create[15] failed, error vrtx_pthread_join[0] failed, error 3 vrtx_pthread_join[1] failed, error 3 vrtx_pthread_join[2] failed, error 3 vrtx_pthread_join[3] failed, error 3 vrtx_pthread_join[4] failed, error 3 vrtx_pthread_join[5] failed, error 3 vrtx_pthread_join[6] failed, error 3 vrtx_pthread_join[7] failed, error 3 vrtx_pthread_join[8] failed, error 3 vrtx_pthread_join[9] failed, error 3 vrtx_pthread_join[10] failed, error 3 vrtx_pthread_join[11] failed, error 3 vrtx_pthread_join[12] failed, error 3 vrtx_pthread_join[13] failed, error 3 vrtx_pthread_join[14] failed, error 3 vrtx_pthread_join[15] failed, error 3 ************************************************************************ ************************************************************************ /tset/POSIX_art.os/synchobjects_rwlocks/pthread_rwlock_unlock/T.pthread_ rwlock_unlock 9 Unresolved Test Description: If {_POSIX_READER_WRITER_LOCKS} is defined: pthread_rwlock_unlock(lock) is thread safe. Test Information: vrtx_pthread_create[0] failed, error vrtx_pthread_create[1] failed, error vrtx_pthread_create[2] failed, error vrtx_pthread_create[3] failed, error vrtx_pthread_create[4] failed, error vrtx_pthread_create[5] failed, error vrtx_pthread_create[6] failed, error vrtx_pthread_create[7] failed, error vrtx_pthread_create[8] failed, error vrtx_pthread_create[9] failed, error vrtx_pthread_create[10] failed, error vrtx_pthread_create[11] failed, error vrtx_pthread_create[12] failed, error vrtx_pthread_create[13] failed, error vrtx_pthread_create[14] failed, error vrtx_pthread_create[15] failed, error vrtx_pthread_join[0] failed, error 3 vrtx_pthread_join[1] failed, error 3 vrtx_pthread_join[2] failed, error 3 vrtx_pthread_join[3] failed, error 3 vrtx_pthread_join[4] failed, error 3 vrtx_pthread_join[5] failed, error 3 vrtx_pthread_join[6] failed, error 3 vrtx_pthread_join[7] failed, error 3 vrtx_pthread_join[8] failed, error 3 vrtx_pthread_join[9] failed, error 3 vrtx_pthread_join[10] failed, error 3 vrtx_pthread_join[11] failed, error 3 vrtx_pthread_join[12] failed, error 3 vrtx_pthread_join[13] failed, error 3 vrtx_pthread_join[14] failed, error 3 vrtx_pthread_join[15] failed, error 3 ************************************************************************ ************************************************************************ /tset/POSIX_art.os/synchobjects_rwlocks/pthread_rwlock_wrlock/T.pthread_ rwlock_wrlock 8 Unresolved Test Description: If {_POSIX_READER_WRITER_LOCKS} is defined: pthread_rwlock_wrlock(lock) is thread safe. Test Information: vrtx_pthread_create[0] failed, error vrtx_pthread_create[1] failed, error vrtx_pthread_create[2] failed, error vrtx_pthread_create[3] failed, error vrtx_pthread_create[4] failed, error vrtx_pthread_create[5] failed, error vrtx_pthread_create[6] failed, error vrtx_pthread_create[7] failed, error vrtx_pthread_create[8] failed, error vrtx_pthread_create[9] failed, error vrtx_pthread_create[10] failed, error vrtx_pthread_create[11] failed, error vrtx_pthread_create[12] failed, error vrtx_pthread_create[13] failed, error vrtx_pthread_create[14] failed, error vrtx_pthread_create[15] failed, error vrtx_pthread_join[0] failed, error 3 vrtx_pthread_join[1] failed, error 3 vrtx_pthread_join[2] failed, error 3 vrtx_pthread_join[3] failed, error 3 vrtx_pthread_join[4] failed, error 3 vrtx_pthread_join[5] failed, error 3 vrtx_pthread_join[6] failed, error 3 vrtx_pthread_join[7] failed, error 3 vrtx_pthread_join[8] failed, error 3 vrtx_pthread_join[9] failed, error 3 vrtx_pthread_join[10] failed, error 3 vrtx_pthread_join[11] failed, error 3 vrtx_pthread_join[12] failed, error 3 vrtx_pthread_join[13] failed, error 3 vrtx_pthread_join[14] failed, error 3 vrtx_pthread_join[15] failed, error 3 ************************************************************************ ************************************************************************ /tset/POSIX_art.os/synchobjects_rwlocks/pthread_rwlockattr_getpshared/T. pthread_rwlockattr_getpshared 4 Unresolved Test Description: If {_POSIX_READER_WRITER_LOCKS} and {_POSIX_THREAD_PROCESS_SHARED} are defined: pthread_rwlockattr_getpshared(attr, pshared) is thread safe. Test Information: vrtx_pthread_create[0] failed, error vrtx_pthread_create[1] failed, error vrtx_pthread_create[2] failed, error vrtx_pthread_create[3] failed, error vrtx_pthread_create[4] failed, error vrtx_pthread_create[5] failed, error vrtx_pthread_create[6] failed, error vrtx_pthread_create[7] failed, error vrtx_pthread_create[8] failed, error vrtx_pthread_create[9] failed, error vrtx_pthread_create[10] failed, error vrtx_pthread_create[11] failed, error vrtx_pthread_create[12] failed, error vrtx_pthread_create[13] failed, error vrtx_pthread_create[14] failed, error vrtx_pthread_create[15] failed, error vrtx_pthread_join[0] failed, error 3 vrtx_pthread_join[1] failed, error 3 vrtx_pthread_join[2] failed, error 3 vrtx_pthread_join[3] failed, error 3 vrtx_pthread_join[4] failed, error 3 vrtx_pthread_join[5] failed, error 3 vrtx_pthread_join[6] failed, error 3 vrtx_pthread_join[7] failed, error 3 vrtx_pthread_join[8] failed, error 3 vrtx_pthread_join[9] failed, error 3 vrtx_pthread_join[10] failed, error 3 vrtx_pthread_join[11] failed, error 3 vrtx_pthread_join[12] failed, error 3 vrtx_pthread_join[13] failed, error 3 vrtx_pthread_join[14] failed, error 3 vrtx_pthread_join[15] failed, error 3 ************************************************************************ ************************************************************************ /tset/POSIX_art.os/synchobjects_rwlocks/pthread_rwlockattr_setpshared/T. pthread_rwlockattr_setpshared 7 Unresolved Test Description: If {_POSIX_READER_WRITER_LOCKS} and {_POSIX_THREAD_PROCESS_SHARED} are defined: pthread_rwlockattr_setpshared(attr, pshared) is thread safe. Test Information: vrtx_pthread_create[0] failed, error vrtx_pthread_create[1] failed, error vrtx_pthread_create[2] failed, error vrtx_pthread_create[3] failed, error vrtx_pthread_create[4] failed, error vrtx_pthread_create[5] failed, error vrtx_pthread_create[6] failed, error vrtx_pthread_create[7] failed, error vrtx_pthread_create[8] failed, error vrtx_pthread_create[9] failed, error vrtx_pthread_create[10] failed, error vrtx_pthread_create[11] failed, error vrtx_pthread_create[12] failed, error vrtx_pthread_create[13] failed, error vrtx_pthread_create[14] failed, error vrtx_pthread_create[15] failed, error vrtx_pthread_join[0] failed, error 3 vrtx_pthread_join[1] failed, error 3 vrtx_pthread_join[2] failed, error 3 vrtx_pthread_join[3] failed, error 3 vrtx_pthread_join[4] failed, error 3 vrtx_pthread_join[5] failed, error 3 vrtx_pthread_join[6] failed, error 3 vrtx_pthread_join[7] failed, error 3 vrtx_pthread_join[8] failed, error 3 vrtx_pthread_join[9] failed, error 3 vrtx_pthread_join[10] failed, error 3 vrtx_pthread_join[11] failed, error 3 vrtx_pthread_join[12] failed, error 3 vrtx_pthread_join[13] failed, error 3 vrtx_pthread_join[14] failed, error 3 vrtx_pthread_join[15] failed, error 3 ************************************************************************ Review Information Review Type TSMA Review Start Date 2007-12-13 03:27 Last Updated 2007-12-19 17:56 Completed 2007-12-19 17:56 Status Complete Review Recommendation Rejected (REJ) Review Response It is agreed that this is a fault in the test suite but it will be handled by issuing a patch for the VRTX library. Review Type SA Review Start Date 2007-12-19 17:56 Last Updated 2007-12-21 14:29 Completed 2007-12-21 14:29 Status Complete Review Resolution Rejected (REJ) Review Conclusion Due to the large number of tests affected, this problem report has been addressed by issuing a patch, which is mandatory to apply for those who encounter this problem. (The patch releases are VRTX1.2.8A and VSTH5.4.7A) Problem Reporting System Options: View Report 2538 List All PRs Search Reports Email the System Administrator View the The Open Brand Interpretations Database User Manual
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