Date: 23 Aug 1998 20:10:18 -0000 From: "Jos Backus" <Jos.Backus@nl.origin-it.com> To: FreeBSD-gnats-submit@FreeBSD.ORG Subject: i386/7729: Progress RDBMS gives suspicious IPC-related warning when run under iBCS2 Message-ID: <19980823201018.28521.qmail@hal.mpn.cp.philips.com>
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>Number: 7729 >Category: i386 >Synopsis: Progress broker is unable to read status of semaphore set >Confidential: no >Severity: non-critical >Priority: low >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Sun Aug 23 13:20:00 PDT 1998 >Last-Modified: >Originator: Jos Backus >Organization: Origin B.V. >Release: FreeBSD 3.0-CURRENT i386 >Environment: -current as of today kernel config options: options SYSVSHM options SYSVSEM options SYSVMSG Progress RDBMS 7.3C13 for SCO 3.2v4.2 (COFF executables) iBCS2 emulation >Description: The Progress broker (_mprosrv) manages access to the physical database using shared memory and semaphores. Self-service clients attach to the shared memory db buffers. Semaphores are used to synchronize access. ktrace'ing the broker process reveals the following: 546 _mprosrv CALL open(0xefbfda44,0x2,0) 546 _mprosrv NAMI "/compat/ibcs2/usr/local/dlc/7.3C13/db/testdb.db" 546 _mprosrv NAMI "/usr/local/dlc/7.3C13/db/testdb.db" 546 _mprosrv RET open 5 546 _mprosrv CALL old.fstat(0x5,0x2,0x1) 546 _mprosrv RET old.fstat 0 546 _mprosrv CALL getfsstat(0xefbfdadc,0xefbfda98) 546 _mprosrv NAMI "testdb.db" 546 _mprosrv RET getfsstat 0 546 _mprosrv CALL sigaltstack(0x1,0x55057439,0x1,0,0) 546 _mprosrv RET sigaltstack -1 errno 2 No such file or directory 546 _mprosrv CALL getfsstat(0xefbfdad4,0xefbfda90) 546 _mprosrv NAMI "testdb.db" 546 _mprosrv RET getfsstat 0 546 _mprosrv CALL sigaltstack(0x1,0x55057439,0x1d,0x7b6,0) 546 _mprosrv RET sigaltstack 131072/0x20000 546 _mprosrv CALL getuid 546 _mprosrv RET getuid 0 546 _mprosrv CALL sigaltstack(0,0x20000,0,0x2,0xefbfdb30) 546 _mprosrv RET sigaltstack -1 errno 14 Bad address # Oops! 546 _mprosrv CALL old.lseek(0x4,0xae57,0) 546 _mprosrv RET old.lseek 44631/0xae57 546 _mprosrv CALL read(0x4,0xefbfd758,0x51) 546 _mprosrv GIO fd 4 read 81 bytes "%BSYSTEM ERROR: unable to %s semaphore set %s:%c, errno %d. (551)\0\0\ \0\0\0\0\0\0\0\0\0\0\0\0\0\0" 546 _mprosrv RET read 81/0x51 546 _mprosrv CALL fchdir(0xefbfd600) 546 _mprosrv RET fchdir 903898754/0x35e06682 546 _mprosrv CALL fchdir(0x40f114) 546 _mprosrv RET fchdir 903898754/0x35e06682 546 _mprosrv CALL write(0x1,0xefbfd630,0x5a) 546 _mprosrv GIO fd 1 wrote 90 bytes "18:59:14 SERVER: SYSTEM ERROR: unable to read status of semaphore set \ :\240, errno 14. (551) " 546 _mprosrv RET write 90/0x5a 546 _mprosrv CALL sigaltstack(0,0x20000,0,0x8,0x1) 546 _mprosrv RET sigaltstack 0 546 _mprosrv CALL sigaltstack(0x2,0x20000,0xefbfdb40,0x1,0) 546 _mprosrv RET sigaltstack 0 546 _mprosrv CALL sigaltstack(0,0x20000,0x1,0x8,0x1) 546 _mprosrv RET sigaltstack 0 >How-To-Repeat: Start the broker process on a db and watch the screen. Alternatively, ktrace the broker. >Fix: No idea. It does work under BSD/OS's SCO emulation though. >Audit-Trail: >Unformatted: emulation From: Jos.Backus@nl.origin-it.com Reply-To: Jos.Backus@nl.origin-it.com X-send-pr-version: 3.2 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
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