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Filename Latest commit message Latest commit date
Raju Rangoju ae465109d8 ACPICA: Revert "ACPICA: avoid Info: mapping multiple BARs. Your kernel is fine." 
[ Upstream commit a83e1385b780d41307433ddbc86e3c528db031f0 ]

Undo the modifications made in commit d410ee5109 ("ACPICA: avoid
"Info: mapping multiple BARs. Your kernel is fine.""). The initial
purpose of this commit was to stop memory mappings for operation
regions from overlapping page boundaries, as it can trigger warnings
if different page attributes are present.

However, it was found that when this situation arises, mapping
continues until the boundary's end, but there is still an attempt to
read/write the entire length of the map, leading to a NULL pointer
deference. For example, if a four-byte mapping request is made but
only one byte is mapped because it hits the current page boundary's
end, a four-byte read/write attempt is still made, resulting in a NULL
pointer deference.

Instead, map the entire length, as the ACPI specification does not
mandate that it must be within the same page boundary. It is
permissible for it to be mapped across different regions.

Link: https://github.com/acpica/acpica/pull/954
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=218849
Fixes: d410ee5109 ("ACPICA: avoid "Info: mapping multiple BARs. Your kernel is fine."")
Co-developed-by: Sanath S <Sanath.S@amd.com>
Signed-off-by: Sanath S <Sanath.S@amd.com>
Signed-off-by: Raju Rangoju <Raju.Rangoju@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-07-05 09:08:24 +02:00
arch mips: bmips: BCM6358: make sure CBR is correctly set 2024-07-05 09:08:22 +02:00
block
certs
crypto crypto: ecrdsa - Fix module auto-load on add_key 2024-06-16 13:28:51 +02:00
Documentation ASoC: dt-bindings: rt5645: add cbj sleeve gpio property 2024-06-16 13:28:31 +02:00
drivers ACPICA: Revert "ACPICA: avoid Info: mapping multiple BARs. Your kernel is fine." 2024-07-05 09:08:24 +02:00
fs udf: udftime: prevent overflow in udf_disk_stamp_to_time() 2024-07-05 09:08:21 +02:00
include hugetlb_encode.h: fix undefined behaviour (34 << 26) 2024-07-05 09:08:20 +02:00
init
ipc
kernel rcutorture: Fix rcu_torture_one_read() pipe_count overflow comment 2024-07-05 09:08:20 +02:00
lib dyndbg: fix old BUG_ON in >control parser 2024-05-17 11:43:55 +02:00
LICENSES
mm x86/mm/pat: fix VM_PAT handling in COW mappings 2024-04-13 12:51:40 +02:00
net netfilter: ipset: Fix suspicious rcu_dereference_protected() 2024-07-05 09:08:23 +02:00
samples
scripts kconfig: fix comparison to constant symbols, 'm', 'n' 2024-06-16 13:28:47 +02:00
security
sound ASoC: ti: davinci-mcasp: Fix race condition during probe 2024-07-05 09:08:13 +02:00
tools selftests/bpf: Prevent client connect before server bind in test_tc_tunnel.sh 2024-07-05 09:08:20 +02:00
usr
virt KVM: async_pf: Cleanup kvm_setup_async_pf() 2024-05-02 16:18:32 +02:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS
Makefile Linux 5.4.278 2024-06-16 13:28:53 +02:00
README

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.