Date: Thu, 4 Oct 2012 18:55:54 GMT From: Garrett Cooper <yanegomi@gmail.com> To: freebsd-gnats-submit@FreeBSD.org Subject: misc/172334: unionfs permits recursive union mounts; causes panic quickly Message-ID: <201210041855.q94ItscN041341@red.freebsd.org> Resent-Message-ID: <201210041900.q94J0LBE003479@freefall.freebsd.org>
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>Number: 172334 >Category: misc >Synopsis: unionfs permits recursive union mounts; causes panic quickly >Confidential: no >Severity: non-critical >Priority: low >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Thu Oct 04 19:00:21 UTC 2012 >Closed-Date: >Last-Modified: >Originator: Garrett Cooper >Release: 9.0-RELEASE >Organization: EMC Isilon >Environment: 9.0-RELEASE amd64 install media >Description: I accidentally got my invocation backwards, was impatient and tried the opposite form and it blew up looking in the VOP code when I did the following: 1. Boot 9.0-RELEASE as a LiveCD. 2. Execute the following commands: mkdir /tmp/etc mount_unionfs /tmp/etc /etc mount_unionfs /etc /tmp/etc 3. Accessing either /etc or /tmp/etc after that should result in a panic. >How-To-Repeat: >Fix: >Release-Note: >Audit-Trail: >Unformatted:
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