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[bug #27975] Infinite loop for -exec [..] {} +

From: James Youngman
Subject: [bug #27975] Infinite loop for -exec [..] {} +
Date: Sun, 08 Nov 2009 23:04:21 +0000
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv: Gecko/2009102814 Iceweasel/3.0.6 (Debian-3.0.6-3)


                 Summary: Infinite loop for -exec [..] {} +
                 Project: findutils
            Submitted by: jay
            Submitted on: Sun 08 Nov 2009 11:04:20 PM GMT
                Category: None
                Severity: 4 - Important
              Item Group: Wrong result
                  Status: None
                 Privacy: Public
             Assigned to: jay
         Originator Name: Elias Pipping
        Originator Email: address@hidden
             Open/Closed: Open
         Discussion Lock: Any
                 Release: None
           Fixed Release: None




I've come across a situation in which find will enter an infinite loop when
it shouldn't. I've written a script to reproduce the issue, loop.sh, that I'm
attaching together w/ the output, out.

The problem occurs when find is run on a file that cannot be opened for
reading as well as a large number of file (the order matters).

The problem will only occur when -exec [..] {} + is used, not w/ -exec [..]
{} \; or -print0 | xargs.

The problem will not occur if the number of files is too small (6664 does it
for me, if you're unable to reproduce the issue w/ my script, please try
something greater than that) or if the above-mentioned file is missing.

This is probably related to bug #27328 (I've had segfaults w/ slightly
different invocations earlier as well, I find myself unable to come up w/ a
test case that doesn't involve the 2G directory I ran it on, for that,

-- Elias


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