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  • [FreeBSD-Announce] FreeBSD Errata Notice FreeBSD-EN-21:10.lldb

    From FreeBSD Errata Notices@21:1/5 to All on Tue Apr 6 21:00:01 2021
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    ============================================================================= FreeBSD-EN-21:10.lldb Errata Notice
    The FreeBSD Project

    Topic: lldb abort on print command

    Category: contrib
    Module: lldb
    Announced: 2021-04-06
    Affects: FreeBSD 12.2
    Corrected: 2020-10-31 18:42:03 UTC (stable/12, 12.2-STABLE)
    2021-04-06 19:21:27 UTC (releng/12.2, 12.2-RELEASE-p6)

    For general information regarding FreeBSD Errata Notices and Security Advisories, including descriptions of the fields above, security
    branches, and the following sections, please visit <URL:https://security.FreeBSD.org/>.

    I. Background

    lldb is the debugger from the LLVM project. Version 10.0.1 is included
    in FreeBSD 12.2.

    II. Problem Description

    Attempts to use lldb's `print` command (`p` alias) resulted in lldb
    aborting.

    III. Impact

    Some common debugger functionality cannot be used.

    IV. Workaround

    No general workaround is available. Information provided by certain print expressions may be available by using other commands, such as
    `frame variable` (`fr v` alias).

    V. Solution

    Upgrade your system to a supported FreeBSD stable or release / security
    branch (releng) dated after the correction date.

    Perform one of the following:

    1) To update your system via a binary patch:

    Systems running a RELEASE version of FreeBSD on the i386 or amd64
    platforms can be updated via the freebsd-update(8) utility:

    # freebsd-update fetch
    # freebsd-update install

    2) To update your system via a source code patch:

    The following patches have been verified to apply to the applicable
    FreeBSD release branches.

    a) Download the relevant patch from the location below, and verify the
    detached PGP signature using your PGP utility.

    # fetch https://security.FreeBSD.org/patches/EN-21:10/lldb.patch
    # fetch https://security.FreeBSD.org/patches/EN-21:10/lldb.patch.asc
    # gpg --verify lldb.patch.asc

    b) Apply the patch. Execute the following commands as root:

    # cd /usr/src
    # patch < /path/to/patch

    c) Recompile the operating system using buildworld and installworld as described in <URL:https://www.FreeBSD.org/handbook/makeworld.html>.

    VI. Correction details

    The following list contains the correction revision numbers for each
    affected branch.

    Branch/path Revision
    - ------------------------------------------------------------------------- stable/12/ r367228 releng/12.2/ r369555
    - -------------------------------------------------------------------------

    To see which files were modified by a particular revision, run the
    following command, replacing NNNNNN with the revision number, on a
    machine with Subversion installed:

    # svn diff -cNNNNNN --summarize svn://svn.freebsd.org/base

    Or visit the following URL, replacing NNNNNN with the revision number:

    <URL:https://svnweb.freebsd.org/base?view=revision&revision=NNNNNN>

    VII. References

    <URL:https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=248745>

    The latest revision of this advisory is available at <URL:https://security.FreeBSD.org/advisories/FreeBSD-EN-21:10.lldb.asc> -----BEGIN PGP SIGNATURE-----

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