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From: "Richard W.M. Jones" <rjones@redhat.com>
To: sbrivio@redhat.com
Cc: passt-dev@passt.top
Subject: Re: [PATCH passt v2 0/7] Add fuzzing
Date: Fri, 18 Nov 2022 10:12:03 +0000	[thread overview]
Message-ID: <20221118101203.GD30956@redhat.com> (raw)
In-Reply-To: <20221117184938.2270462-1-rjones@redhat.com>


I was wondering if --fd 0 would work, but it doesn't.  This hangs:

  $ ../passt -1 -f -e --fd 0 < testcase_dir/empty_tap 

It's clear from strace why this is.  Trying to add fd 0 to epoll
returns -EPERM.  The epoll_ctl(2) manual says:

       EPERM  The target file fd does not support epoll.  This error can occur
              if fd refers to, for example, a regular file or a directory.

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming and virtualization blog: http://rwmj.wordpress.com
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  parent reply	other threads:[~2022-11-18 10:12 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-11-17 18:49 [PATCH passt v2 0/7] Add fuzzing Richard W.M. Jones
2022-11-17 18:49 ` [PATCH passt v2 1/7] build: Force-create pasta symlink Richard W.M. Jones
2022-11-18  1:30   ` David Gibson
2022-11-18  7:56     ` Stefano Brivio
2022-11-17 18:49 ` [PATCH passt v2 2/7] build: Remove *~ files with make clean Richard W.M. Jones
2022-11-18  1:31   ` David Gibson
2022-11-17 18:49 ` [PATCH passt v2 3/7] passt, tap: Add --fd option Richard W.M. Jones
2022-11-17 18:49 ` [PATCH passt v2 4/7] passt, tap: Process data on the socket before HUP/ERR events Richard W.M. Jones
2022-11-18  1:32   ` David Gibson
2022-11-17 18:49 ` [PATCH passt v2 5/7] XXX build: Add extra syscalls needed by AFL instrumentation Richard W.M. Jones
2022-11-17 18:49 ` [PATCH passt v2 6/7] XXX passt: Kill seccomp and other isolation mechanisms Richard W.M. Jones
2022-11-17 18:49 ` [PATCH passt v2 7/7] Import fuzzing wrapper from libnbd Richard W.M. Jones
2022-11-17 19:06 ` [PATCH passt v2 0/7] Add fuzzing Richard W.M. Jones
2022-11-18 10:12 ` Richard W.M. Jones [this message]
2022-11-25  9:23 ` Stefano Brivio
2022-11-25 10:11   ` Richard W.M. Jones
2022-11-29 13:34     ` Stefano Brivio
2022-11-29 13:44       ` Richard W.M. Jones
2022-11-30  1:11       ` David Gibson

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