[Crash-utility] [PATCH] Fix junk values when run crash on a .gz file

[Dave Anderson]

The whole point of the "vmlinux" name check is to verify from
the compressed header itself whether it was generated from a file
that started with the name-string "vmlinux".  It's not interested 
in whatever the .gz creator named the compressed file.  If you want
to work around that restriction, use "crash -f ...".

Dave


----- Original Message -----
> Signed-off-by: Aruna Balakrishnaiah <aruna at linux.vnet.ibm.com>
> 
> ---
>  symbols.c |    4 ++--
>  1 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/symbols.c b/symbols.c
> index 0cd3a01..acd8ad5 100755
> --- a/symbols.c
> +++ b/symbols.c
> @@ -2995,10 +2995,10 @@ is_compressed_kernel(char *file, char **tmp)
>  	type = 0;
>  
>  	if ((header[0] == 0x1f) && (header[1] == 0x8b) && (header[2] == 8))
>  	{
> -		if (!STRNEQ((char *)&header[10], "vmlinux") &&
> +		if (!STRNEQ(basename(file), "vmlinux") &&
>  		    !(st->flags & FORCE_DEBUGINFO)) {
>  			error(INFO, "%s: compressed file name does not "
> -			    "start with \"vmlinux\"\n", &header[10]);
> +			    "start with \"vmlinux\"\n", file);
>  			error(CONT,
>  			    "Use \"-f %s\" on command line to override.\n\n",
>  				file);
> 
>