threads/180652: compat32 problem in clock_getcpuclockid2

Petr Salinger Petr.Salinger at seznam.cz
Sun Jul 21 08:30:02 UTC 2013 

The following reply was made to PR threads/180652; it has been noted by GNATS.

From: Petr Salinger <Petr.Salinger at seznam.cz>
To: Konstantin Belousov <kostikbel at gmail.com>
Cc: freebsd-gnats-submit at FreeBSD.org
Subject: Re: threads/180652: compat32 problem in clock_getcpuclockid2
Date: Sun, 21 Jul 2013 10:23:54 +0200 (CEST)

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 --8323328-1230774450-1374395034=:23067
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 >>  I only tested with adapted tst-timer2.c.  I hope you would do the rest.
 > I tried. The tst-timer4.c timed out. I will look at it later.
 
 There have been two problems:
 
 a) sigev_value.sival_ptr have not been copied
 b) the code misshandles timer_create() with NULL struct sigevent
 
 With attached patch, it passes our tests.
 
 I think, that there is a similar bug in both new
 freebsd32_kmq_notify() and sys_kmq_notify().
 They do not handle NULL in struct sigevent, it might suffice to
 
 - return (kern_kmq_notify(td, uap->mqd, &ev));
 + return (kern_kmq_notify(td, uap->mqd, uap->sigev == NULL ? NULL : &ev));
 
 But this seems not be covered by our testsuite.
 
 Petr
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