FreeBSD src
Go to file
Konstantin Belousov 8164032a49 reapkill: handle possible pid reuse after the pid was recorded as signalled
Nothing prevents the signalled process from exiting, and then other
process among eligible for signalling to reuse the exited process pid.
In this case, presence of the pid in the 'pids' unr set prevents it from
getting the deserved signal.

Handle it by marking each process with the new flag P2_REAPKILLED when
we are about to send the signal.  If the process pid is present in the
pids unr, but the struct proc is not marked with P2_REAPKILLED, we must
send signal to the pid again.

The use of the flag relies on the global sapblk preventing parallel
reapkills.

The pids unr must be used to clear the flags to all signalled processes.

Reviewed by:	markj
Tested by:	pho
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D40089
2023-05-30 01:10:36 +03:00
.cirrus-ci
.github MAINTAINERS: Add myself to stand 2023-05-07 22:30:10 -06:00
bin pwd.1: replace /home with /sys in example 2023-05-23 07:21:50 -05:00
cddl kinst: fix memcpy() tracing crash 2023-05-26 18:43:37 +03:00
contrib Apply clang fixes for crashes compiling ARM/AArch64 CRC intrinsics 2023-05-29 16:28:18 +02:00
crypto openssh: Update configure for DISABLE_LASTLOG 2023-04-20 18:08:16 -04:00
etc Add simple factor/primes regression tests 2023-05-27 11:11:44 -07:00
gnu Update/fix Makefile.depend for userland 2023-04-18 17:14:23 -07:00
include spdx: Simplify BSD-2-Clause AND BSD-2-Clause 2023-05-12 10:44:04 -06:00
kerberos5 spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD 2023-05-12 10:44:03 -06:00
lib libpcap: Update PACKAGE_VERSION definition to 1.10.4 2023-05-29 15:41:01 -03:00
libexec Revert "When stopping powerd, set the CPU frequency back to its maximum value" 2023-05-25 09:40:26 -04:00
release release/oci.conf: add missing vm_extra_pre_umount() steps 2023-05-24 13:11:07 -04:00
rescue Update/fix Makefile.depend for userland 2023-04-18 17:14:23 -07:00
sbin setkey(8): document NAT-T and NAT-T MTU extensions syntax 2023-05-30 01:10:02 +03:00
secure Update/fix Makefile.depend for userland 2023-04-18 17:14:23 -07:00
share unr(9): document iterators 2023-05-30 01:10:36 +03:00
stand stand: libefi: avoid a null pointer deref in eficom 2023-05-28 13:54:50 -05:00
sys reapkill: handle possible pid reuse after the pid was recorded as signalled 2023-05-30 01:10:36 +03:00
targets local.dirdeps.mk skip N_host_libs for non-FreeBSD host 2023-05-04 11:58:39 -07:00
tests netlink: add snl(3) support for listing genetlink multicast groups 2023-05-27 11:13:14 +00:00
tools avx_sig: Print statistics by interval enstead of by pressing ^T 2023-05-29 11:09:17 +03:00
usr.bin Fix the build post-dcf5d5603b3af8 2023-05-27 19:18:43 -07:00
usr.sbin nfsuserd: Improve failure message when running in a jail 2023-05-29 13:38:07 -07:00
.arcconfig arcanist: use FreeBSD/git project repository instead of FreeBSD/svn 2022-08-23 14:16:41 +00:00
.arclint
.cirrus.yml Cirrus-CI: switch to -lite LLVM package for native run 2023-05-19 09:56:03 -04:00
.clang-format
.git-blame-ignore-revs Add git-blame ignore file 2023-01-23 15:27:25 -05:00
.gitattributes
.gitignore .gitignore: Ignore LSP generated .cache 2023-03-07 10:04:18 -05:00
CONTRIBUTING.md CONTRIBUTING.md: minor changes 2023-05-14 06:51:56 -06:00
COPYRIGHT Happy New Year 2023! 2023-01-01 13:44:43 +08:00
LOCKS
MAINTAINERS MAINTAINERS: Add myself to stand 2023-05-07 22:30:10 -06:00
Makefile Move MACHINE/MACHINE_ARCH handling to sys.machine.mk 2023-05-13 08:15:49 -07:00
Makefile.inc1 Makefile.inc1: use make builtin :ts instead of sed 2023-05-05 08:14:35 -04:00
Makefile.libcompat
Makefile.sys.inc AUTO_OBJ: For all top-level targets enforce using an OBJDIR. 2017-12-05 21:29:47 +00:00
ObsoleteFiles.inc delete-old: add two files left behind in certs/blacklisted 2023-05-24 13:03:10 -07:00
README.md README.md: link to the list of supported platforms 2022-11-01 12:20:55 -03:00
RELNOTES RELNOTES: add note about moving /usr/home to /home 2023-05-24 10:32:07 -05:00
UPDATING Update UPDATING 2023-05-14 07:05:42 -06:00

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.

For information on the CPU architectures and platforms supported by FreeBSD, see the FreeBSD website's Platforms page.

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 Commands and libraries under the GNU General Public License (GPL) or Lesser General Public License (LGPL). 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 (see sys/README.md).
targets Support for experimental DIRDEPS_BUILD
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.