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Filename Latest commit message Latest commit date
Heiko Carstens e9849a60fa s390/ptrace: fix storage key handling
[ Upstream commit fd78c59446b8d050ecf3e0897c5a486c7de7c595 ]

The key member of the runtime instrumentation control block contains
only the access key, not the complete storage key. Therefore the value
must be shifted by four bits. Since existing user space does not
necessarily query and set the access key correctly, just ignore the
user space provided key and use the correct one.
Note: this is only relevant for debugging purposes in case somebody
compiles a kernel with a default storage access key set to a value not
equal to zero.

Fixes: 262832bc5a ("s390/ptrace: add runtime instrumention register get/set")
Reported-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-08-26 10:41:02 +02:00
arch s390/ptrace: fix storage key handling 2020-08-26 10:41:02 +02:00
block
certs
crypto
Documentation
drivers bonding: fix a potential double-unregister 2020-08-26 10:41:02 +02:00
fs ext4: don't allow overlapping system zones 2020-08-26 10:40:58 +02:00
include
init
ipc
kernel kthread: Do not preempt current task if it is going to call schedule() 2020-08-26 10:40:53 +02:00
lib
LICENSES
mm mm, page_alloc: fix core hung in free_pcppages_bulk() 2020-08-26 10:40:51 +02:00
net can: j1939: add rxtimer for multipacket broadcast session 2020-08-26 10:41:02 +02:00
samples
scripts
security
sound ASoC: q6routing: add dummy register read/write function 2020-08-26 10:40:59 +02:00
tools tools/testing/selftests/cgroup/cgroup_util.c: cg_read_strcmp: fix null pointer dereference 2020-08-26 10:40:57 +02:00
usr
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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.