Date: Wed, 10 Jun 1998 23:09:44 +0200 (CEST) From: aj@stack.nl (Arend-Jan Wijtzes) To: FreeBSD-gnats-submit@FreeBSD.ORG Subject: kern/6908: crash from userland 2 Message-ID: <19980610210944.C1362C55@turtle.stack.nl>
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Note: There was a bad value `normal' for the field `>Severity:'. It was set to the default value of `serious'. Note: There was a bad value `bug' for the field `>Class:'. It was set to the default value of `sw-bug'. >Number: 6908 >Category: kern >Synopsis: kernel crash from user land >Confidential: no >Severity: serious >Priority: low >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Wed Jun 10 14:10:00 PDT 1998 >Last-Modified: >Originator: Arend-jan Wijtzes >Organization: M.C.G.V. Stack >Release: FreeBSD 2.2.6-STABLE i386 >Environment: Nothing special >Description: When making a tar to /dev/fd0 the idle process will take up all CPU and finally the machine locks up. This will take even less time when there is no floppy in the drive. Of course one should not make a tar to /dev/fd0, but this way any user can crash the system when he/she has permission to write to the fd* device(s). >How-To-Repeat: tar cf /dev/fd0 / >Fix: None. fix permissions so users can't write do fd* but use rfd*. >Audit-Trail: >Unformatted: SEND-PR: -*- send-pr -*- SEND-PR: Lines starting with `SEND-PR' will be removed automatically, as SEND-PR: will all comments (text enclosed in `<' and `>'). SEND-PR: SEND-PR: Please consult the send-pr man page `send-pr(1)' or the Texinfo SEND-PR: manual if you are not sure how to fill out a problem report. SEND-PR: SEND-PR: Note that the Synopsis field is mandatory. The Subject (for SEND-PR: the mail) will be made the same as Synopsis unless explicitly SEND-PR: changed. SEND-PR: SEND-PR: Choose from the following categories: SEND-PR: SEND-PR: bin conf docs gnu i386 kern misc ports SEND-PR: To: FreeBSD-gnats-submit@freebsd.org Subject: From: aj@stack.nl Reply-To: aj@stack.nl X-send-pr-version: 3.2 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
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