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Filename Latest commit message Latest commit date
Colin Ian King baf56a1d81 perf/x86/intel/uncore: Fix integer overflow on 23 bit left shift of a u32 
[ Upstream commit 0b3a8738b76fe2087f7bc2bd59f4c78504c79180 ]

The u32 variable pci_dword is being masked with 0x1fffffff and then left
shifted 23 places. The shift is a u32 operation,so a value of 0x200 or
more in pci_dword will overflow the u32 and only the bottow 32 bits
are assigned to addr. I don't believe this was the original intent.
Fix this by casting pci_dword to a resource_size_t to ensure no
overflow occurs.

Note that the mask and 12 bit left shift operation does not need this
because the mask SNR_IMC_MMIO_MEM0_MASK and shift is always a 32 bit
value.

Fixes: ee49532b38 ("perf/x86/intel/uncore: Add IMC uncore support for Snow Ridge")
Addresses-Coverity: ("Unintentional integer overflow")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Kan Liang <kan.liang@linux.intel.com>
Link: https://lore.kernel.org/r/20210706114553.28249-1-colin.king@canonical.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-09-03 10:08:14 +02:00
arch perf/x86/intel/uncore: Fix integer overflow on 23 bit left shift of a u32 2021-09-03 10:08:14 +02:00
block blk-iolatency: error out if blk_get_queue() failed in iolatency_set_limit() 2021-08-12 13:20:58 +02:00
certs
crypto
Documentation KVM: X86: MMU: Use the correct inherited permissions to get shadow page 2021-08-15 13:08:04 +02:00
drivers usb: gadget: u_audio: fix race condition on endpoint stop 2021-09-03 10:08:14 +02:00
fs mm, oom: make the calculation of oom badness more accurate 2021-09-03 10:08:12 +02:00
include mm, oom: make the calculation of oom badness more accurate 2021-09-03 10:08:12 +02:00
init
ipc
kernel tracing / histogram: Fix NULL pointer dereference on strcmp() on NULL event name 2021-08-26 08:36:20 -04:00
lib once: Fix panic when module unload 2021-09-03 10:08:12 +02:00
LICENSES
mm mm, oom: make the calculation of oom badness more accurate 2021-09-03 10:08:12 +02:00
net rtnetlink: Return correct error on changing device netns 2021-09-03 10:08:14 +02:00
samples
scripts scripts/tracing: fix the bug that can't parse raw_trace_func 2021-08-12 13:21:00 +02:00
security
sound ASoC: intel: atom: Fix breakage for PCM buffer address setup 2021-08-26 08:36:21 -04:00
tools bpf, selftests: Adjust few selftest result_unpriv outcomes 2021-08-12 13:21:04 +02:00
usr
virt KVM: Do not leak memory for duplicate debugfs directories 2021-08-12 13:21:03 +02:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS
Makefile Linux 5.4.143 2021-08-26 08:55:22 -04:00
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.