Date: Thu, 19 Apr 2007 12:21:09 +0300 From: Danny Braniss <danny@cs.huji.ac.il> To: Kris Kennaway <kris@obsecurity.org> Cc: freebsd-hackers@freebsd.org, freebsd-current@freebsd.org Subject: Re: diskless/rm causing deadlock? Message-ID: <E1HeSpB-000E1X-3S@cs1.cs.huji.ac.il> In-Reply-To: <20070404160436.GA59964@xor.obsecurity.org> References: <E1HZ1Go-000DYB-KZ@cs1.cs.huji.ac.il> <20070404160436.GA59964@xor.obsecurity.org>
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> > --opJtzjQTFsWo+cga > Content-Type: text/plain; charset=us-ascii > Content-Disposition: inline > Content-Transfer-Encoding: quoted-printable > > On Wed, Apr 04, 2007 at 11:55:10AM +0300, Danny Braniss wrote: > > I stumbled on this in -current, but it's also true for 6.2. > > /(root) is mounted diskless, doing rm of a file in /, even as a lowly mor= > tal > > will hang the network, and hence everything. > > on a 6.1 system, it works as expected. > >=20 > > badwolf> rm /usr/ports > > rm: /usr/ports: Read-only file system > >=20 > > i'll try to hunt this down, but some pointers where to start might be > > helpfull > > Start with a tcpdump of network traffic. CC mohans@ :) > > I have seen something similar myself, but have not yet tracked it down. it's because / is mounted NFS/V2 - so the 'bug' must be in the V2 stack. danny
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