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Filename Latest commit message Latest commit date
Oleg Nesterov 628c1bcba2 kernel/signal.c: protect the traced SIGNAL_UNKILLABLE tasks from SIGKILL
The comment in sig_ignored() says "Tracers may want to know about even
ignored signals" but SIGKILL can not be reported to debugger and it is
just wrong to return 0 in this case: SIGKILL should only kill the
SIGNAL_UNKILLABLE task if it comes from the parent ns.

Change sig_ignored() to ignore ->ptrace if sig == SIGKILL and rely on
sig_task_ignored().

SISGTOP coming from within the namespace is not really right too but at
least debugger can intercept it, and we can't drop it here because this
will break "gdb -p 1": ptrace_attach() won't work.  Perhaps we will add
another ->ptrace check later, we will see.

Link: http://lkml.kernel.org/r/20171103184206.GB21036@redhat.com
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Tested-by: Kyle Huey <me@kylehuey.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-11-17 16:10:03 -08:00
arch bug: define the "cut here" string in a single place 2017-11-17 16:10:01 -08:00
block
certs
crypto kmemcheck: stop using GFP_NOTRACK and SLAB_NOTRACK 2017-11-15 18:21:04 -08:00
Documentation dynamic_debug documentation: minor fixes 2017-11-17 16:10:01 -08:00
drivers lkdtm: include WARN format string 2017-11-17 16:10:01 -08:00
firmware
fs fat: remove redundant assignment of 0 to slots 2017-11-17 16:10:03 -08:00
include pipe: add proc_dopipe_max_size() to safely assign pipe_max_size 2017-11-17 16:10:03 -08:00
init init/version.c: include <linux/export.h> instead of <linux/module.h> 2017-11-17 16:10:02 -08:00
ipc
kernel kernel/signal.c: protect the traced SIGNAL_UNKILLABLE tasks from SIGKILL 2017-11-17 16:10:03 -08:00
lib lib: test module for find_*_bit() functions 2017-11-17 16:10:02 -08:00
mm mm, compaction: remove unneeded pageblock_skip_persistent() checks 2017-11-17 16:10:00 -08:00
net Merge branch 'akpm' (patches from Andrew) 2017-11-15 19:42:40 -08:00
samples media updates for v4.15-rc1 2017-11-15 20:30:12 -08:00
scripts checkpatch: do not check missing blank line before builtin_*_driver 2017-11-17 16:10:02 -08:00
security
sound
tools tools/lib/traceevent/parse-filter.c: clean up clang build warning 2017-11-17 16:10:02 -08:00
usr
virt First batch of KVM changes for 4.15 2017-11-16 13:00:24 -08:00
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap Add Jason Gunthorpe as co-maintainer of the RDMA stack 2017-11-17 09:36:18 -08:00
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS libnvdimm for 4.15 2017-11-17 09:51:57 -08:00
Makefile
README

Linux kernel
============

This file was moved to Documentation/admin-guide/README.rst

Please notice that there are several guides for kernel developers and users.
These guides can be rendered in a number of formats, like HTML and PDF.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.

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.