[GRASS-dev] [GRASS GIS] #1710: Segfault in r.proj

[GRASS GIS]

#1710: Segfault in r.proj
---------------------+------------------------------------------------------
 Reporter:  huhabla  |       Owner:  grass-dev@…              
     Type:  defect   |      Status:  new                      
 Priority:  major    |   Milestone:  7.0.0                    
Component:  Raster   |     Version:  svn-trunk                
 Keywords:           |    Platform:  Linux                    
      Cpu:  x86-64   |  
---------------------+------------------------------------------------------
 I have found a reproducible but irregular appearing segfault in r.proj
 when using several threads. Looks like an OpenMP race condition?
 This error is not reproducible with OMP_NUM_THREADS=1.

 Here the gdb output and backtrace
 {{{
 GRASS 7.0.svn (ECAD):~/Geostat > gdb r.proj
 (gdb) r input=g250_06 location="Corine LAEA ETRS89" mapset=PERMANENT --o

 Input:
 Cols: 23600 (23600)
 Rows: 18400 (18400)
 North: 5500000.000000 (5500000.000000)
 South: 900000.000000 (900000.000000)
 West: 1500000.000000 (1500000.000000)
 East: 7400000.000000 (7400000.000000)
 EW-res: 250.000000
 NS-res: 250.000000

 Output:
 Cols: 23600 (23600)
 Rows: 18400 (18400)
 North: 58.952751 (58.952751)
 South: 26.415806 (26.415806)
 West: -18.236960 (-18.236960)
 East: 72.906137 (72.906137)
 EW-res: 0.003862
 NS-res: 0.001768

 Allocating memory and reading input map...
  100%
 Projecting...
 [New Thread 0x7fffeb099700 (LWP 18304)]
 [New Thread 0x7fffea898700 (LWP 18305)]
 [New Thread 0x7fffea097700 (LWP 18306)]
   27%
 Program received signal SIGSEGV, Segmentation fault.
 0x0000000000402bae in p_nearest (ibuffer=0x60daf0, obufptr=0x655c5c,
 cell_type=0, col_idx=4619.2086762076688, row_idx=8957.466116201218,
 cellhd=0x7fffffffd550) at nearest.c:33
 33          cell = CVAL(ibuffer, row, col);
 (gdb) bt
 #0  0x0000000000402bae in p_nearest (ibuffer=0x60daf0, obufptr=0x655c5c,
 cell_type=0, col_idx=4619.2086762076688, row_idx=8957.466116201218,
 cellhd=0x7fffffffd550) at nearest.c:33
 #1  0x00000000004050f2 in main.omp_fn.0 (.omp_data_i=0x7fffffffd8c0) at
 main.c:517
 #2  0x0000000000404b31 in main (argc=5, argv=0x7fffffffdb68) at main.c:496

 }}}

-- 
Ticket URL: <http://trac.osgeo.org/grass/ticket/1710>
GRASS GIS <http://grass.osgeo.org>