Reentrant problem with inet_ntoa in the kernel

[VANHULLEBUS Yvan]

On Thu, Nov 02, 2006 at 06:19:43PM +0800, LI Xin wrote:
[.....]
> Sounds like a workaround to me and in theory that is insufficient for a
> MPSAFE protection.  Here is a patch which reduces the chance where we
> get a race.

Hi.

This patch will allow multiple calls to inet_ntoa int the same
function (like printf(....., inet_ntoa(a), inet_ntoa(b))), but won't
really solve the race condition if inet_ntoa is called from 2
differents functions at the same time: at least the round should be
locked to reduce potential problems, and you're still not sure that no
more than 8 "simultaneous" (or at least close enough) calls will be done.



Yvan.

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