Hi...
Coming a bit late..
As you see, with -Os, this produces:
/* THIS FIELD IS ONLY 16 BITS */
movl4(%ebx), %eax
movw%ax, (%esi)
While the no-optimizations code looks like this:
movl8(%ebp), %eax
movzwl 4(%eax), %eax
movl%eax, %
On Nov 20, 2007 12:16 PM, Vegard Nossum <[EMAIL PROTECTED]> wrote:
> Hello,
>
> Running kmemcheck, I got the following:
> kmemcheck: Caught uninitialized read from EIP = c11aeba6
> (sock_init_data+0xa6/0x17a), address c341a024, size 32
> [] error_code+0x72/0x78
> [] sock_init_data+0xa6/0x17a
> [
Hi!
This site may be interesting to you:
http://kerneltrap.org/Linux/Compiler_Optimization_Bugs_and_World_Domination
Yours,
Michi
--
programing a layer 3+4 network protocol
see http://michaelblizek.homelinux.net
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On Nov 20, 2007 12:43 PM, Vegard Nossum <[EMAIL PROTECTED]> wrote:
> On Nov 20, 2007 12:16 PM, Vegard Nossum <[EMAIL PROTECTED]> wrote:
> > Here, offsetof(struct socket, type) = 0x24, like the one used in the
> > reads/writes. The type here is short, on 386 that's 16 bits. So why is
> > gcc later r
Hello,
Running kmemcheck, I got the following:
kmemcheck: Caught uninitialized read from EIP = c11aeba6
(sock_init_data+0xa6/0x17a), address c341a024, size 32
[] error_code+0x72/0x78
[] sock_init_data+0xa6/0x17a
[] __netlink_create+0x3b/0x85
[] netlink_kernel_create+0x59/0x148
[] xfrm_user_in
