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Alexey Budankov 45fd22da97 perf/core: Take over CAP_SYS_PTRACE creds to CAP_PERFMON capability
Open access to per-process monitoring for CAP_PERFMON only
privileged processes [1]. Extend ptrace_may_access() check
in perf_events subsystem with perfmon_capable() to simplify
user experience and make monitoring more secure by reducing
attack surface.

[1] https://lore.kernel.org/lkml/7776fa40-6c65-2aa6-1322-eb3a01201000@linux.intel.com/

Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/6e8392ff-4732-0012-2949-e1587709f0f6@linux.intel.com
2020-08-06 15:03:20 +02:00
arch It's been a busy cycle for documentation - hopefully the busiest for a 2020-08-04 22:47:54 -07:00
block Remove uninitialized_var() macro for v5.9-rc1 2020-08-04 13:49:43 -07:00
certs .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
crypto It's been a busy cycle for documentation - hopefully the busiest for a 2020-08-04 22:47:54 -07:00
Documentation It's been a busy cycle for documentation - hopefully the busiest for a 2020-08-04 22:47:54 -07:00
drivers It's been a busy cycle for documentation - hopefully the busiest for a 2020-08-04 22:47:54 -07:00
fs It's been a busy cycle for documentation - hopefully the busiest for a 2020-08-04 22:47:54 -07:00
include It's been a busy cycle for documentation - hopefully the busiest for a 2020-08-04 22:47:54 -07:00
init It's been a busy cycle for documentation - hopefully the busiest for a 2020-08-04 22:47:54 -07:00
ipc mmap locking API: use coccinelle to convert mmap_sem rwsem call sites 2020-06-09 09:39:14 -07:00
kernel perf/core: Take over CAP_SYS_PTRACE creds to CAP_PERFMON capability 2020-08-06 15:03:20 +02:00
lib It's been a busy cycle for documentation - hopefully the busiest for a 2020-08-04 22:47:54 -07:00
LICENSES
mm It's been a busy cycle for documentation - hopefully the busiest for a 2020-08-04 22:47:54 -07:00
net It's been a busy cycle for documentation - hopefully the busiest for a 2020-08-04 22:47:54 -07:00
samples It's been a busy cycle for documentation - hopefully the busiest for a 2020-08-04 22:47:54 -07:00
scripts It's been a busy cycle for documentation - hopefully the busiest for a 2020-08-04 22:47:54 -07:00
security cap-checkpoint-restore-v5.9 2020-08-04 15:02:07 -07:00
sound Remove uninitialized_var() macro for v5.9-rc1 2020-08-04 13:49:43 -07:00
tools It's been a busy cycle for documentation - hopefully the busiest for a 2020-08-04 22:47:54 -07:00
usr usr: Add support for zstd compressed initramfs 2020-07-31 11:49:08 +02:00
virt entry: Provide infrastructure for work before transitioning to guest mode 2020-07-24 15:03:42 +02:00
.clang-format block: add bio_for_each_bvec_all() 2020-05-25 11:25:24 +02:00
.cocciconfig
.get_maintainer.ignore Opt out of scripts/get_maintainer.pl 2019-05-16 10:53:40 -07:00
.gitattributes .gitattributes: use 'dts' diff driver for dts files 2019-12-04 19:44:11 -08:00
.gitignore .gitignore: Add ZSTD-compressed files 2020-07-31 11:50:49 +02:00
.mailmap It's been a busy cycle for documentation - hopefully the busiest for a 2020-08-04 22:47:54 -07:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS CREDITS: Replace HTTP links with HTTPS ones 2020-07-23 14:53:58 -06:00
Kbuild kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS It's been a busy cycle for documentation - hopefully the busiest for a 2020-08-04 22:47:54 -07:00
Makefile Automatic variable initialization updates for v5.9-rc1 2020-08-04 13:38:35 -07:00
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 Restructured Text 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.