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Steven Rostedt 4d1c44cd98 ktest.pl: Fix uninitialized var in config-bisect.pl 
commit d3042cbe84 upstream.

The error path of copying the old config used the wrong variable in the
error message:

 $ mkdir /tmp/build
 $ ./tools/testing/ktest/config-bisect.pl -b /tmp/build config-good /tmp/config-bad
 $ chmod 0 /tmp/build
 $ ./tools/testing/ktest/config-bisect.pl -b /tmp/build config-good /tmp/config-bad good
 cp /tmp/build//.config config-good.tmp ... [0 seconds] FAILED!
 Use of uninitialized value $config in concatenation (.) or string at ./tools/testing/ktest/config-bisect.pl line 744.
 failed to copy  to config-good.tmp

When it should have shown:

 failed to copy /tmp/build//.config to config-good.tmp

Cc: stable@vger.kernel.org
Cc: John 'Warthog9' Hawley <warthog9@kernel.org>
Fixes: 0f0db06599 ("ktest: Add standalone config-bisect.pl program")
Link: https://patch.msgid.link/20251203180924.6862bd26@gandalf.local.home
Reported-by: "John W. Krahn" <jwkrahn@shaw.ca>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2026-01-08 10:14:15 +01:00
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README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.