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Brandon Bergren 5a08df100b [PowerPC] Fix 32-bit Book-E panic due to pve leak 
On an INVARIANTS kernel on 32-bit Book-E, we were panicing when running
the libproc tests. This was caused by extra pv entries being generated
accidentally by the pmap icache invalidation code.

Use the same VA (i.e. 0) when freeing the temporary mapping, instead of
some arbitrary address within the zero page.

Failure to do this was causing kernel-side icache syncing to leak
PVE entries when invalidating icache for a non page-aligned address, which
would later result in pages erroneously showing up as mapped to vm_page.

This bug was introduced in r347354 in 2019.

Reviewed by:	jhibbits (in irc)
Sponsored by:	Tag1 Consulting, Inc.
2021-03-29 18:22:16 -05:00
.github/workflows GitHub actions: unbreak macOS build 2021-01-08 15:36:38 +01:00
bin sh(1): autocomplete commands 2021-03-29 11:14:27 +02:00
cddl libctf: Adjust logic to match upstream after 410556f1f 2021-03-27 20:37:12 -04:00
contrib libedit: vendor import libedit 2021-03-28 2021-03-29 10:05:55 +02:00
crypto OpenSSL: Merge OpenSSL 1.1.1k 2021-03-25 11:45:19 -04:00
etc base: remove if_wg(4) and associated utilities, manpage 2021-03-17 09:14:48 -05:00
gnu dialog: fix macro redefinition 2021-03-01 16:01:44 +01:00
include Import OpenSSL 1.1.1k. 2021-03-25 11:05:31 -04:00
kerberos5 kerberos5: fix the WITH_OPENLDAP build 2021-01-30 00:07:50 -06:00
lib libnetmap: add support for the offset features 2021-03-29 16:38:37 +00:00
libexec rtld: fix the man page 2021-03-25 00:51:44 +01:00
release pkgbase: make only vital packages vital, not their sub-packages 2021-03-28 12:18:09 +02:00
rescue ping: add a ping6 hard link for backwards compatibility 2020-11-26 18:33:04 +00:00
sbin gvinum: add deprecation notice 2021-03-28 14:45:05 -04:00
secure OpenSSL: Regen manual pages for 1.1.1k 2021-03-25 12:17:52 -04:00
share security.7: fix typo in sysctl name 2021-03-26 22:24:31 +01:00
stand loader: insert spaces around menu title 2021-03-23 09:31:36 +02:00
sys [PowerPC] Fix 32-bit Book-E panic due to pve leak 2021-03-29 18:22:16 -05:00
targets ndis(4): remove as previous announced 2021-01-25 21:45:03 +00:00
tests ng_macfilter_test: Skip rather than fail if there is no network 2021-03-25 11:16:12 +00:00
tools git-arc.sh: Make it compatible with Ubuntu 18.04 2021-03-25 11:17:58 +00:00
usr.bin truss: improved support for decoding compat32 arguments 2021-03-25 11:14:13 +00:00
usr.sbin bhyve: Enable virtio-scsi legacy config parsing. 2021-03-29 10:25:45 -07:00
.arcconfig arcconfig: add callsign again 2020-11-23 04:39:29 +00:00
.arclint arc lint: ignore /tests/ in chmod 2017-12-19 03:38:06 +00:00
.cirrus.yml Cirrus-CI: Add more information to help track down disk full issues 2021-03-03 11:51:08 -05:00
.clang-format clang-format: Avoid breaking after the opening paren of function definitions 2020-10-28 11:54:00 +00:00
.gitattributes Add a basic clang-format configuration file 2019-06-07 15:23:52 +00:00
.gitignore gitignore: expand list of ignored files 2021-01-14 17:03:57 +01:00
COPYRIGHT copyrights: Happy New Year 2021 2020-12-31 10:29:44 -05:00
LOCKS LOCKS: update current locks 2018-06-09 03:08:04 +00:00
MAINTAINERS Add a pointer to csprng@ for the CSPRNG driver. This is enforced anyway by 2020-09-01 08:02:12 +00:00
Makefile Fix 'make bmake' top-level bootstrapping. 2021-03-06 09:45:08 -08:00
Makefile.inc1 Makefile.inc1: unbreak bootstrap when kbdcontrol does not exist 2021-03-23 20:47:14 -04:00
Makefile.libcompat libcompat: remove redundant path for ncurses 2021-01-07 15:14:52 +01:00
Makefile.sys.inc AUTO_OBJ: For all top-level targets enforce using an OBJDIR. 2017-12-05 21:29:47 +00:00
ObsoleteFiles.inc Remove more terminfo entries after 16d3faad09 2021-03-26 22:21:49 +01:00
README.md Whitespace cleanup 2021-03-12 19:57:58 +08:00
RELNOTES Bump CURRENT to 14.0 2021-01-21 19:10:07 -05:00
UPDATING Add UPDATING entry for PIE default 2021-02-25 11:02:09 -05:00

README.md

FreeBSD Source:

This is the top level of the FreeBSD source directory.

FreeBSD is an operating system used to power modern servers, desktops, and embedded platforms. A large community has continually developed it for more than thirty years. Its advanced networking, security, and storage features have made FreeBSD the platform of choice for many of the busiest web sites and most pervasive embedded networking and storage devices.

For copyright information, please see the file COPYRIGHT in this directory. Additional copyright information also exists for some sources in this tree - please see the specific source directories for more information.

The Makefile in this directory supports a number of targets for building components (or all) of the FreeBSD source tree. See build(7), config(8), FreeBSD handbook on building userland, and Handbook for kernels for more information, including setting make(1) variables.

Source Roadmap:

Directory Description
bin System/user commands.
cddl Various commands and libraries under the Common Development and Distribution License.
contrib Packages contributed by 3rd parties.
crypto Cryptography stuff (see crypto/README).
etc Template files for /etc.
gnu Various commands and libraries under the GNU Public License. Please see gnu/COPYING and gnu/COPYING.LIB for more information.
include System include files.
kerberos5 Kerberos5 (Heimdal) package.
lib System libraries.
libexec System daemons.
release Release building Makefile & associated tools.
rescue Build system for statically linked /rescue utilities.
sbin System commands.
secure Cryptographic libraries and commands.
share Shared resources.
stand Boot loader sources.
sys Kernel sources.
sys/arch/conf Kernel configuration files. GENERIC is the configuration used in release builds. NOTES contains documentation of all possible entries.
tests Regression tests which can be run by Kyua. See tests/README for additional information.
tools Utilities for regression testing and miscellaneous tasks.
usr.bin User commands.
usr.sbin System administration commands.

For information on synchronizing your source tree with one or more of the FreeBSD Project's development branches, please see FreeBSD Handbook.