From: greenuser <greenuser@nl.thalesgroup.com>
To: linux-kernel@vger.kernel.org
Subject: posix lock_timer fails on tgid invalid
Date: Wed, 11 Jul 2007 11:56:42 +0200 [thread overview]
Message-ID: <4694A95A.85155DAE@nl.thalesgroup.com> (raw)
Hello,
On my uClinux nios platform I discovered the following bug:
Suppose the application has a thread, and in this thread the
timer_create function is called
Next in the main thread the timer_settime function is called.
Now, this function will always fail, in sys_settime a lock_timer
function is called.
This lock_timer function checks that timr->it_process->tgid equals
current->tgid else
the function fails. With two threads in the application, this check
always fails!!!
Note: the same code works fine on a desktop linux system. I already
reported this bug to the uClinux forum and the nios forum for a month.
So far, without any response.
Why is the check on tgid needed and why does it fail?
Greetings Gerrit
reply other threads:[~2007-07-11 15:14 UTC|newest]
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