| msg60366 - (view) |
Author: Ralf W. Grosse-Kunstleve (rwgk) |
Date: 2003-08-05 21:59 |
| Under IRIX (6.5.20) Python 2.3 (final) crashes with a core dump while executing a SCons job (www.scons.org). I've recompiled Python with -g but the behavior is the same. Here is the beginning of the dbx stack trace: dbx version 7.3 MR 55458_Apr30_MR Apr 30 1999 13:44:41 dbx Warning: Unknown processor type 0xe, assuming this is not an R8000 Core from signal SIGSEGV: Segmentation violation (dbx) where > 0 mark_save(state = , lo = , hi = 0, mark_stack_base = (nil)) ["/txusr/rwgrosse/selfx/Python- Modules/_sre.c":289, 0x10107bc4] 1 sre_match(state = 0x10840c78, pattern = 0x10207ef0, level = 669) ["/txusr/rwgrosse/selfx/Python- Modules/_sre.c":979, 0x10109d74] 2 sre_match(state = 0x10840c78, pattern = 0x10207f10, level = 668) ["/txusr/rwgrosse/selfx/Python- Modules/_sre.c":1263, 0x1010ad24] 3 sre_match(state = 0x10840c78, pattern = 0x10207ef0, level = 667) ["/txusr/rwgrosse/selfx/Python- Modules/_sre.c":991, 0x10109ea0] 4 sre_match(state = 0x10840c78, pattern = 0x10207f10, level = 666) ["/txusr/rwgrosse/selfx/Python- Modules/_sre.c":1263, 0x1010ad24] 5 sre_match(state = 0x10840c78, pattern = 0x10207ef0, level = 665) ["/txusr/rwgrosse/selfx/Python- Modules/_sre.c":991, 0x10109ea0] 6 sre_match(state = 0x10840c78, pattern = 0x10207f10, level = 664) ["/txusr/rwgrosse/selfx/Python- Modules/_sre.c":1263, 0x1010ad24] The alternation of _sre.c:991, _sre.c:1263 continues to the end of the dbx output which stops at 99; the value of level is decreasing monotonously. To reproduce upload this file to an IRIX machine: http://cci.lbl.gov/cctbx_build/send_octet_stream.cgi? source=results/2003_08_04_2056/cctbx_python_23_ bundle.selfx In a new, empty directory enter the command: perl cctbx_python_23_bundle.selfx When prompted enter the number of available CPU's and wait for the Python 2.3 installation to finish (log is in the file py_install_log). The newly compiled Python is used to start a SCons build procedure. The crash occurs a few files into the process of compiling C++ sources. I've tried the exact same source code under Redhat 8.0. There it finishes without a crash. Therefore I am thinking you will need an IRIX machine to reproduce the crash. |
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| msg60367 - (view) |
Author: Ralf W. Grosse-Kunstleve (rwgk) |
Date: 2003-08-06 02:04 |
| Logged In: YES user_id=71407 An additional piece of information: I observe the crashes (reproducibly) only when using SCons' -j option for parallel builds, using multiple CPU's. I believe the -j option involves the threading module. If I run the build using only one CPU it finishes without a problem. |
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| msg60368 - (view) |
Author: Χρήστος Γεωργίου (Christos Georgiou) (tzot) * |
Date: 2003-08-19 08:41 |
| Logged In: YES user_id=539787 Ralf: what machine are you working on? Origin? Please specify # of CPU's, IP##. This to help me reproduce the problem. Also, try somehow to discover the failing regular expression, and report that. _sre.c wizards: This stack overflow happens in SRE_MATCH, alternating between the SRE_OP_BRANCH (line 991) and SRE_OP_MIN_UNTIL (line 1263). |
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| msg60369 - (view) |
Author: Ralf W. Grosse-Kunstleve (rwgk) |
Date: 2003-08-19 13:58 |
| Logged In: YES user_id=71407 Below is the output of hinv. I have no clue how to find the regular expression without having a traceback. Is there some place in _sre.c where I could insert a print statement? 16 400 MHZ IP27 Processors CPU: MIPS R12000 Processor Chip Revision: 3.5 FPU: MIPS R12010 Floating Point Chip Revision: 3.5 Main memory size: 4096 Mbytes Instruction cache size: 32 Kbytes Data cache size: 32 Kbytes Secondary unified instruction/data cache size: 8 Mbytes Integral SCSI controller 12: Version Fibre Channel AIC- 1160, revision 2 RAID controller: unit 0 on SCSI controller 12 RAID lun: unit 0, lun 3 on SCSI controller 12 RAID lun: unit 0, lun 4 on SCSI controller 12 RAID lun: unit 0, lun 5 on SCSI controller 12 Integral SCSI controller 6: Version Fibre Channel AIC- 1160, revision 2 RAID controller: unit 0 on SCSI controller 6 RAID lun: unit 0, lun 0 on SCSI controller 6 RAID lun: unit 0, lun 1 on SCSI controller 6 RAID lun: unit 0, lun 2 on SCSI controller 6 Integral SCSI controller 14: Version Fibre Channel AIC- 1160, revision 2 Integral SCSI controller 2: Version QL1040B (rev. 2), single ended Integral SCSI controller 3: Version QL1040B (rev. 2), differential Integral SCSI controller 4: Version QL1040B (rev. 2), differential Integral SCSI controller 5: Version QL1040B (rev. 2), differential Integral SCSI controller 9: Version Fibre Channel QL2200 RAID controller: unit 0 on SCSI controller 9 RAID lun: unit 0, lun 7 on SCSI controller 9 Integral SCSI controller 1: Version QL1040B (rev. 2), single ended Tape drive: unit 5 on SCSI controller 1: DAT Integral SCSI controller 0: Version QL1040B (rev. 2), single ended Disk drive: unit 1 on SCSI controller 0 Disk drive: unit 2 on SCSI controller 0 Disk drive: unit 3 on SCSI controller 0 CDROM: unit 6 on SCSI controller 0 Integral SCSI controller 10: Version QL1040B (rev. 2), single ended CDROM: unit 6 on SCSI controller 10 Integral SCSI controller 11: Version QL1040B (rev. 2), single ended Integral SCSI controller 13: Version Fibre Channel AIC- 1160, revision 2 Integral SCSI controller 7: Version Fibre Channel AIC- 1160, revision 2 Integral SCSI controller 8: Version Fibre Channel QL2200 RAID controller: unit 0 on SCSI controller 8 RAID lun: unit 0, lun 0 on SCSI controller 8 RAID lun: unit 0, lun 2 on SCSI controller 8 Integral SCSI controller 15: Version Fibre Channel AIC- 1160, revision 2 IOC3/IOC4 serial port: tty1 IOC3/IOC4 serial port: tty3 IOC3/IOC4 serial port: tty2 IOC3/IOC4 serial port: tty4 Fast Ethernet: ef1, version 1, module 2, slot io1, pci 2 Integral Fast Ethernet: ef0, version 1, module 1, slot io1, pci 2 Gigabit Ethernet: eg0, module 2, XIO slot io3, firmware version 12.4.10 ATM PCA-200E OC-3: module 1, xio_slot 2, pci_slot 0, unit 0 Origin PCI XIO board, module 1 slot 2: Revision 4 Origin FIBRE CHANNEL board, module 2 slot 6: Revision 4 Origin FIBRE CHANNEL board, module 1 slot 7: Revision 4 Origin MSCSI board, module 1 slot 8: Revision 4 Origin FIBRE CHANNEL board, module 2 slot 10: Revision 4 Origin BASEIO board, module 1 slot 1: Revision 4 Origin BASEIO board, module 2 slot 1: Revision 4 IOC3/IOC4 external interrupts: 2 IOC3/IOC4 external interrupts: 1 |
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| msg76895 - (view) |
Author: Amaury Forgeot d'Arc (amaury.forgeotdarc) *  |
Date: 2008-12-04 16:43 |
| This looks like a stack overflow to me, and the re module is no longer recursive since python2.4. |
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