Red Hat Bugzilla – Bug 498715
Illegal instruction encountered by an Intel Pentium III-M in libraries provided by atlas-sse
Last modified: 2009-05-04 11:55:40 EDT
Description of problem: Running a private F77 code which requires LAPACK, the program aborts when it encounters an illegal instruction in /usr/lib/atlas-sse/libatlas.so.3. When run in GDB, the following information is returned: Program received signal SIGILL, Illegal instruction. 0x077796cd in ATL_diamax_xp1yp0aXbX () from /usr/lib/atlas-sse/libatlas.so.3 The corresponding backtrace reads: #0 0x077796cd in ATL_diamax_xp1yp0aXbX () from /usr/lib/atlas-sse/libatlas.so.3 #1 0x07923be4 in ATL_ztpsvUN () from /usr/lib/atlas-sse/libatlas.so.3 #2 0x0190d518 in ab.1513 () from /home/fedora/lib/libSO0.so.1 #3 0x00000000 in ?? () libSO0.so.1 is a private dynamical library calling LAPACK routines. Version-Release number of selected component (if applicable): atlas-sse-3.8.3-3.fc11.i586 How reproducible: Always. Steps to Reproduce: 1. Remove all object files and the executable of the crashing program. 2. 'make'. 3. Run program. Actual results: Program aborts returning "Illegal instruction". Expected results: Program runs and completes as expected. Additional info: - System is an IBM ThinkPad T23 with a Pentium M processor running current "rawhide" including gcc-4.4.0-3. cpuinfo reads: processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 11 model name : Mobile Intel(R) Pentium(R) III CPU - M 1200MHz stepping : 4 cpu MHz : 1197.000 cache size : 512 KB fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 2 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 mtrr pge mca cmov pat pse36 mmx fxsr sse up bogomips : 2398.36 clflush size : 32 power management: Thus the CPU should be able to execute SSE instructions if asked for. - The Makefile contains "-llapack". The executable is linked dynamically against /usr/lib/atlas-sse/liblapack.so.3 /usr/lib/atlas-sse/libf77blas.so.3 /usr/lib/atlas-sse/libcblas.so.3 /usr/lib/atlas-sse/libatlas.so.3 At compile and run time, the following packages were installed: atlas-sse-3.8.3-3.fc11.i586 atlas-sse-devel-3.8.3-3.fc11.i586 blas-3.1.1-5.fc11.i586 blas-devel-3.1.1-5.fc11.i586 lapack-3.1.1-5.fc11.i586 lapack-devel-3.1.1-5.fc11.i586 - After prepending /usr/lib to LD_LIBRARY_PATH, the executable is linked dynamically against /usr/lib/liblapack.so.3 /usr/lib/libblas.so.3 It runs correctly now. - The program also crashes when building against atlas-sse after removing lapack-devel and blas-devel from the system.
A corresponding 32 bit executable built on an AMD64 system against atlas-sse, atlas-sse2, and atlas-sse3 respectively runs correctly in all three cases as it does when linked dynamically against BLAS and LAPACK 32 bit libraries.
Can you please upgrade to the packages at http://koji.fedoraproject.org/koji/taskinfo?taskID=1333136 and let me know if they fix the issue for you or not. Thanks.
The culprit in atlas-sse-3.8.3-3.fc11.i586 appears to be 0x077796cd <ATL_diamax_xp1yp0aXbX+61>: movsd (%esi),%xmm0 . However, "movsd (%esi),%xmm0" is not an SSE instruction but an SSE2 one.
Fixed in atlas-sse-3.8.3-4.fc11.i586.
atlas-3.8.3-4 have been built for rawhide and F11. Thanks for the report.