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Subject: [BUG] x86info fails on 2.6.34 ?
From: Eric Dumazet <eric.dumazet@gmail.com>
To: Dave Jones <davej@redhat.com>
Cc: linux-kernel <linux-kernel@vger.kernel.org>
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Date: Mon, 05 Apr 2010 22:24:01 +0200
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Hi Dave

I just noticed x86info was not working anymore on latest kernel

x86info v1.24.  Dave Jones 2001-2009
Feedback to <davej@redhat.com>.

type seek: Value too large for defined data type


Offending syscall is an lseek(fd, -1, SEEK_CUR) on /dev/mem file



open("/dev/mem", O_RDONLY)              = 3
...
lseek(3, 1023092, SEEK_SET)             = 1023092
read(3, "PCMP\4\3\4\266HP      PROLIANT    \0\0\0\0\0"..., 44) = 44
read(3, "\0"..., 1)                     = 1
lseek(3, -1, SEEK_CUR)                  = -1 EOVERFLOW (Value too large
for defined data type)

It seems -1 is taken as an unsigned quantity ?