FreeBSD Errata Notices
2021-Apr-06 20:22 UTC
[FreeBSD-Announce] FreeBSD Errata Notice FreeBSD-EN-21:10.lldb
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512
============================================================================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-----
iQIzBAEBCgAdFiEE/A6HiuWv54gCjWNV05eS9J6n5cIFAmBswDUACgkQ05eS9J6n
5cL7iRAAnlsryVy3aJFQIMghO7+rOwwpFnxlDponVvzIkeNH2x3c62V81eAhUIvj
q6TvEp2dNQdaTDoN6ytPoL+ek4sBh8WdVt0R8sWnUbEDf1BhvGQ3P9eT4q8Thx+Z
wB3L40pLQZFapINmpEIp7xwcWJv8xiKxmY2PDOcNkju5GWD4OatoMuCx5iMNwQ+g
7aYUL1gUhvcudSMghJ+jH6Pre2Yq+y+ziAhmGB0QOREOEoguXvJwgdO+clZHdFl2
E1Yudhfr0v6afQFL9RzX+Ck6ft9KBPd9rzZwc2bTHfi08zmAy63FN3Bxvx/8O/EJ
9NXRJHv0zuVSOZePKJ6qv1ap5f7RLzLN7ztaUQMCxkqCoRsdV3UYsUCkE8NH/ZOT
NZ7zZCmL7zHpn17QX7tBqqYeAHtFJLAlXaBiSIxYOaKM87GMMmvpb+06f9frwtuu
lOxzY0l7H+iWsSakdsoUrtL+wNvOM3wFafHtDSXDyHbSUKWiWa3yubzl8szIgCrX
GhW84r3MdaVSm3EQQS2qQux+9HTLcx5Lh0+BVmeA36VBwNeG+wc8t5eZYc4xSlJh
jIv2CRPm97e5796O5gGtjqyiidSL2lfw9tHE3H/1gqn/2DLNFbM+DcwgI20Wfz4u
hdhN//GsIDiOA9BwClgIW6Vbs/V5B9uN8E/RH4lFggmJAkkPWGU=boNk
-----END PGP SIGNATURE-----