Russell King <[email protected]> wrote:
>
> Guys,
>
> ARM folk have recently pointed out a problem with sys_times().
> When the kernel boots, we set jiffies to -5 minutes. This causes
> sys_times() to return a negative number, which increments through
> zero.
>
> However, some negative numbers are used to return error codes.
> Hence, there's a period of time when sys_times() returns values
> which are indistinguishable from error codes shortly after boot.
What a strange system call.
> This probably only affects 32-bit architectures. However, one
> wonders whether sys_times() needs force_successful_syscall_return().
I'd say so, yes. But lots of architectures seem to have a no-op there.
> Also, it appears that glibc does indeed interpret the return value
> from sys_times in the way I describe above on at least ARM and x86.
> Other architectures may be similarly affected. Hopefully the ARM
> glibc folk will raise a cross-architecture bug in glibc for this.
>
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