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Filename Latest commit message Latest commit date
Richard Fitzgerald 442e50393a regmap: rbtree: Fix wrong register marked as in-cache when creating new node 
[ Upstream commit 7a795ac8d49e2433e1b97caf5e99129daf8e1b08 ]

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 21:46:43 +02:00
arch powerpc/watchpoints: Annotate atomic context in more places 2023-10-10 21:46:40 +02:00
block
certs
crypto X.509: if signature is unsupported skip validation 2023-09-23 10:59:55 +02:00
Documentation perf/smmuv3: Enable HiSilicon Erratum 162001900 quirk for HIP08/09 2023-09-23 11:00:03 +02:00
drivers regmap: rbtree: Fix wrong register marked as in-cache when creating new node 2023-10-10 21:46:43 +02:00
fs fs: binfmt_elf_efpic: fix personality for ELF-FDPIC 2023-10-10 21:46:42 +02:00
include ata: libata-sata: increase PMP SRST timeout to 10s 2023-10-10 21:46:42 +02:00
init
ipc
kernel ring-buffer: Update "shortest_full" in polling 2023-10-10 21:46:41 +02:00
lib kobject: Add sanity check for kset->kobj.ktype in kset_register() 2023-09-23 11:00:05 +02:00
LICENSES
mm tmpfs: verify {g,u}id mount options correctly 2023-09-23 10:59:40 +02:00
net net: prevent rewrite of msg_name in sock_sendmsg() 2023-10-10 21:46:43 +02:00
samples
scripts kconfig: fix possible buffer overflow 2023-09-23 10:59:57 +02:00
security Smack:- Use overlay inode label in smack_inode_copy_up() 2023-10-10 21:46:41 +02:00
sound ALSA: hda: Disable power save for solving pop issue on Lenovo ThinkCentre M70q 2023-10-10 21:46:41 +02:00
tools bpf: Clarify error expectations from bpf_clone_redirect 2023-10-10 21:46:40 +02:00
usr
virt
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Makefile Linux 5.4.257 2023-09-23 11:00:07 +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.