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Re: [lwip-users] Possible race condition in netconn_write

From: Christiaan Simons
Subject: Re: [lwip-users] Possible race condition in netconn_write
Date: Fri, 26 May 2006 09:53:07 +0200

Geir wrote:

> This is a potential race
> condition as the semaphore is deleted prior to the conn->sem being set
> to 0 in netconn_write. The lwip_thread runs at a higher task priority
> than the application thread and may interrupt the application thread
> between the delete and and the 0 assignment. I fixed this in my
> application by removing the semaphore deletion/assignment from
> netconn_write and have the semaphore exist until netconn_delete is

Added this change to our CVS HEAD.

Note there are more issues with the netconn_* stuff that I listed
as bug #15926 (and added to the TODO list in the CHANGELOG).

Thanks for reporting.

Christiaan Simons

Hardware Designer
Axon Digital Design


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