[gdal-dev] Segmentation fault using gdal 1.4.4 and 1.5.2 on netcdf

[Dylan Beaudette]

On Wednesday 27 August 2008, Vishal Mehta wrote:
> Hello all,
>
> I continue to have 'segmentation fault' error using gdal-1.5.2 on Ubuntu
> 8.04 with netcdf files.
>
> I re-compiled gdal from source again, this time with Dylan Beaudette's
> gracious help (thanks Dylan!). I still got segmentation fault.
>
> Below are the last few lines of strace - hope that helps in identifying
> what the problem is... I have libnetcdf 3.6-2-2
>
> Please note that the two netcdf files I've tried do open using FWTools for
> Windows as well as starspan for Windows - so I don't think anything is
> wrong with the netcdf files..
>
> -vishal
>
> -------excerpt from strace follows---
>
> read(3, "CDF\1\0\0\0\1\0\0\0\n\0\0\0\3\0\0\0\3lat\0\0\0\1h\0\0\0"..., 4096)
> = 4096 _llseek(3, 0, [0], SEEK_SET)            = 0
> open(".", O_RDONLY|O_NONBLOCK|O_LARGEFILE|O_DIRECTORY|0x80000) = 4
> fstat64(4, {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
> fcntl64(4, F_GETFD)                     = 0x1 (flags FD_CLOEXEC)
> getdents(4, /* 6 entries */, 4096)      = 136
> getdents(4, /* 0 entries */, 4096)      = 0
> close(4)                                = 0
> open("airtemp.nc", O_RDONLY|O_LARGEFILE) = 4
> fstat64(4, {st_mode=S_IFREG|0666, st_size=265644, ...}) = 0
> fstat64(4, {st_mode=S_IFREG|0666, st_size=265644, ...}) = 0
> _llseek(4, 0, [0], SEEK_SET)            = 0
> read(4, "CDF\1\0\0\0\1\0\0\0\n\0\0\0\3\0\0\0\3lat\0\0\0\1h\0\0\0"..., 8192)
> = 8192 --- SIGSEGV (Segmentation fault) @ 0 (0) ---
> +++ killed by SIGSEGV +++
> Process 395 detached

I also noticed the following error with the same file (dmesg), on a 
Debian/Unstable system:

gdalinfo[15469]: segfault at 1031 ip b73a1c09 sp bf873c20 error 4 in 
libmfhdf.so.4.1r4[b7390000+21000]

this was with a fairly recent SVN copy of GDAL-1.5, and the libnetcdf3 
package.

I have updated my netcdf libraries to 
libnetcdf4 3.6.2-3.1

and will try again with a freshly updated GDAL source tree...


-- 
Dylan Beaudette
Soil Resource Laboratory
http://casoilresource.lawr.ucdavis.edu/
University of California at Davis
530.754.7341