On 04/29/2014 06:13 PM, H. Peter Anvin wrote:
> I suspect this will generate FP instructions on x86 which will corrupt user
> space state. This is thus a critical bug!!
It looks like at least x86-64 gcc does the evaluation at compile time
and there aren't any fp instructions left in the code.
I suspect this will generate FP instructions on x86 which will corrupt user
space state. This is thus a critical bug!!
On April 29, 2014 6:10:39 PM PDT, beh...@converseincode.com wrote:
>From: Mark Charlebois
>
>The call to __builtin_log2 presumes there is a
>double log2(double x) function
From: Mark Charlebois
The call to __builtin_log2 presumes there is a
double log2(double x) function defined in the kernel.
The call to hash_log is a call to hash_64 which is
defined in include/linux/hash.h
static __always_inline u64 hash_64(u64 val, unsigned int bits)
That means that
From: Mark Charlebois charl...@gmail.com
The call to __builtin_log2 presumes there is a
double log2(double x) function defined in the kernel.
The call to hash_log is a call to hash_64 which is
defined in include/linux/hash.h
static __always_inline u64 hash_64(u64 val, unsigned int bits)
That
I suspect this will generate FP instructions on x86 which will corrupt user
space state. This is thus a critical bug!!
On April 29, 2014 6:10:39 PM PDT, beh...@converseincode.com wrote:
From: Mark Charlebois charl...@gmail.com
The call to __builtin_log2 presumes there is a
double log2(double
On 04/29/2014 06:13 PM, H. Peter Anvin wrote:
I suspect this will generate FP instructions on x86 which will corrupt user
space state. This is thus a critical bug!!
It looks like at least x86-64 gcc does the evaluation at compile time
and there aren't any fp instructions left in the code.
From: Mark Charlebois
The call to __builtin_log2 presumes there is a
double log2(double x) function defined in the kernel.
The call to hash_log is a call to hash_64 which is
defined in include/linux/hash.h
static __always_inline u64 hash_64(u64 val, unsigned int bits)
That means that
From: Mark Charlebois charl...@gmail.com
The call to __builtin_log2 presumes there is a
double log2(double x) function defined in the kernel.
The call to hash_log is a call to hash_64 which is
defined in include/linux/hash.h
static __always_inline u64 hash_64(u64 val, unsigned int bits)
That
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