Date: Thu, 14 Oct 2021 10:25:37 -0400 From: Mark Johnston <markj@freebsd.org> To: Hartmut Brandt <harti@freebsd.org> Cc: src-committers@freebsd.org, dev-commits-src-all@freebsd.org, dev-commits-src-main@freebsd.org Subject: Re: git: ded77e0237a8 - main - Allow the BPF to be select for write. This is needed for boost:asio which otherwise fails to handle BPFs. Reviewed by: ae Differential Revision: https://reviews.freebsd.org/D31967 Message-ID: <YWg94fks35TaeRvk@nuc> In-Reply-To: <202110130754.19D7so0V049456@gitrepo.freebsd.org> References: <202110130754.19D7so0V049456@gitrepo.freebsd.org>
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On Wed, Oct 13, 2021 at 07:54:50AM +0000, Hartmut Brandt wrote: > The branch main has been updated by harti: > > URL: https://cgit.FreeBSD.org/src/commit/?id=ded77e0237a8534230746031f373d8a8ae80cdaa > > commit ded77e0237a8534230746031f373d8a8ae80cdaa > Author: Hartmut Brandt <harti@FreeBSD.org> > AuthorDate: 2021-10-10 15:03:51 +0000 > Commit: Hartmut Brandt <harti@FreeBSD.org> > CommitDate: 2021-10-10 15:03:51 +0000 > > Allow the BPF to be select for write. This is needed for boost:asio > which otherwise fails to handle BPFs. > Reviewed by: ae > Differential Revision: https://reviews.freebsd.org/D31967 Hi, syzbot found a bug in this change: https://syzkaller.appspot.com/bug?id=a99f705b2b8b854d70ec4d47eed481c90046bd3c It seems that filt_bpfwrite() needs to check whether d->bd_bif == NULL before dereferencing.
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