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From: Archie Cobbs <archie@whistle.com>
Message-Id: <199809080547.WAA05469@bubba.whistle.com>
Subject: Re: Thread Problems
In-Reply-To: <199809080021.UAA04192@highwind.com> from HighWind Software Information at "Sep 7, 98 08:21:56 pm"
To: info@highwind.com (HighWind Software Information)
Date: Mon, 7 Sep 1998 22:47:53 -0700 (PDT)
Cc: freebsd-current@FreeBSD.ORG, jb@cimlogic.com.au
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HighWind Software Information writes:
> Seems to me that libc_r can call free() from within a signal handler.
> Given the non-recursive nature of this call, this is a serious
> problem:
> 
> SIGVTALARM comes in (to check for context switching right?),
> _thread_sig_handler gets it, it can (and does) call
> _thread_kern_sched, _thread_kern_sched calls free() in a number of
> different places.
> 
> This (to my libc_r-newbie-eyes) is *BAD*. Besides getting that message
> printed, can this cause corruption of data?
> 
> Should I open a PR?

Definitely.. the more specifics, the better, of course.

-Archie

___________________________________________________________________________
Archie Cobbs   *   Whistle Communications, Inc.  *   http://www.whistle.com

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