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Richard Fitzgerald 725fd20805 regmap: rbtree: Fix wrong register marked as in-cache when creating new node 
[ Upstream commit 7a795ac8d4 ]

When regcache_rbtree_write() creates a new rbtree_node it was passing the
wrong bit number to regcache_rbtree_set_register(). The bit number is the
offset __in number of registers__, but in the case of creating a new block
regcache_rbtree_write() was not dividing by the address stride to get the
number of registers.

Fix this by dividing by map->reg_stride.
Compare with regcache_rbtree_read() where the bit is checked.

This bug meant that the wrong register was marked as present. The register
that was written to the cache could not be read from the cache because it
was not marked as cached. But a nearby register could be marked as having
a cached value even if it was never written to the cache.

Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Fixes: 3f4ff561bc ("regmap: rbtree: Make cache_present bitmap per node")
Link: https://lore.kernel.org/r/20230922153711.28103-1-rf@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-10-10 21:53:37 +02:00
arch arm64: Add Cortex-A520 CPU part definition 2023-10-10 21:53:37 +02:00
block block: fix use-after-free of q->q_usage_counter 2023-10-10 21:53:36 +02:00
certs certs/blacklist_hashes.c: fix const confusion in certs blacklist 2022-06-22 14:13:17 +02:00
crypto crypto: lrw,xts - Replace strlcpy with strscpy 2023-09-23 11:01:05 +02:00
Documentation perf/smmuv3: Enable HiSilicon Erratum 162001900 quirk for HIP08/09 2023-09-23 11:01:05 +02:00
drivers regmap: rbtree: Fix wrong register marked as in-cache when creating new node 2023-10-10 21:53:37 +02:00
fs NFSv4: Fix a state manager thread deadlock regression 2023-10-10 21:53:36 +02:00
include bpf: Fix tr dereferencing 2023-10-10 21:53:37 +02:00
init x86/mm: Initialize text poking earlier 2023-08-08 19:57:39 +02:00
io_uring io_uring: break iopolling on signal 2023-09-19 12:20:24 +02:00
ipc ipc/sem: Fix dangling sem_array access in semtimedop race 2022-12-08 11:24:00 +01:00
kernel ring-buffer: Fix bytes info in per_cpu buffer stats 2023-10-10 21:53:36 +02:00
lib kobject: Add sanity check for kset->kobj.ktype in kset_register() 2023-09-23 11:01:08 +02:00
LICENSES
mm media: vb2: frame_vector.c: replace WARN_ONCE with a comment 2023-10-10 21:53:33 +02:00
net net: prevent rewrite of msg_name in sock_sendmsg() 2023-10-10 21:53:37 +02:00
samples samples/hw_breakpoint: fix building without module unloading 2023-09-23 11:01:09 +02:00
scripts kconfig: fix possible buffer overflow 2023-09-19 12:20:25 +02:00
security Smack:- Use overlay inode label in smack_inode_copy_up() 2023-10-10 21:53:34 +02:00
sound ALSA: hda: Disable power save for solving pop issue on Lenovo ThinkCentre M70q 2023-10-10 21:53:34 +02:00
tools bpf: Fix BTF_ID symbol generation collision in tools/ 2023-10-10 21:53:35 +02:00
usr usr/include/Makefile: add linux/nfc.h to the compile-test coverage 2022-02-01 17:25:48 +01:00
virt KVM: fix memoryleak in kvm_init() 2023-04-05 11:23:43 +02:00
.clang-format RDMA 5.10 pull request 2020-10-17 11:18:18 -07:00
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore kbuild: generate Module.symvers only when vmlinux exists 2021-05-19 10:12:59 +02:00
.mailmap mailmap: add two more addresses of Uwe Kleine-König 2020-12-06 10:19:07 -08:00
COPYING
CREDITS MAINTAINERS: Move Jason Cooper to CREDITS 2020-11-30 10:20:34 +01:00
Kbuild
Kconfig
MAINTAINERS Remove DECnet support from kernel 2023-06-21 15:45:38 +02:00
Makefile Linux 5.10.197 2023-09-23 11:01:11 +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.