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From: =?utf-8?Q?Dag-Erling_Sm=C3=B8rgrav?= <des@des.no>
To: Xin LI <delphij@FreeBSD.org>
Subject: Re: svn commit: r273552 - head/sys/kern
References: <201410231823.s9NINpXD082633@svn.freebsd.org>
Date: Fri, 24 Oct 2014 00:47:16 +0200
In-Reply-To: <201410231823.s9NINpXD082633@svn.freebsd.org> (Xin LI's message
 of "Thu, 23 Oct 2014 18:23:51 +0000 (UTC)")
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Xin LI <delphij@FreeBSD.org> writes:
> Log:
>   Test if 'env' is NULL before doing memset() and strlen(),
>   the caller may pass NULL to freeenv().

If this is in response to a panic in early boot, the real bug is
elsewhere (see r273564).  Adding a NULL check here only hides it.

DES
--=20
Dag-Erling Sm=C3=B8rgrav - des@des.no