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29b9ebc891
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Masami Hiramatsu (Google) 29b9ebc891 rethook: Use __rcu pointer for rethook::handler 
commit a1461f1fd6 upstream.

Since the rethook::handler is an RCU-maganged pointer so that it will
notice readers the rethook is stopped (unregistered) or not, it should
be an __rcu pointer and use appropriate functions to be accessed. This
will use appropriate memory barrier when accessing it. OTOH,
rethook::data is never changed, so we don't need to check it in
get_kretprobe().

NOTE: To avoid sparse warning, rethook::handler is defined by a raw
function pointer type with __rcu instead of rethook_handler_t.

Link: https://lore.kernel.org/all/170126066201.398836.837498688669005979.stgit@devnote2/

Fixes: 54ecbe6f1e ("rethook: Add a generic return hook")
Cc: stable@vger.kernel.org
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202311241808.rv9ceuAh-lkp@intel.com/
Tested-by: JP Kobryn <inwardvessel@gmail.com>
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-12-13 18:45:19 +01:00
arch kernel/Kconfig.kexec: drop select of KEXEC for CRASH_DUMP 2023-12-13 18:45:19 +01:00
block block: update the stable_writes flag in bdev_add 2023-12-03 07:33:03 +01:00
certs certs: Reference revocation list for all keyrings 2023-08-17 20:12:41 +00:00
crypto crypto: pcrypt - Fix hungtask for PADATA_RESET 2023-11-28 17:19:42 +00:00
Documentation tee: optee: Fix supplicant based device enumeration 2023-12-13 18:45:11 +01:00
drivers md: don't leave 'MD_RECOVERY_FROZEN' in error path of md_set_readonly() 2023-12-13 18:45:19 +01:00
fs btrfs: fix 64bit compat send ioctl arguments not initializing version member 2023-12-08 08:52:20 +01:00
include rethook: Use __rcu pointer for rethook::handler 2023-12-13 18:45:19 +01:00
init proc: sysctl: prevent aliased sysctls from getting passed to init 2023-11-28 17:19:57 +00:00
io_uring io_uring/kbuf: check for buffer list readiness after NULL check 2023-12-13 18:45:17 +01:00
ipc Add x86 shadow stack support 2023-08-31 12:20:12 -07:00
kernel rethook: Use __rcu pointer for rethook::handler 2023-12-13 18:45:19 +01:00
lib zstd: Fix array-index-out-of-bounds UBSAN warning 2023-12-13 18:44:58 +01:00
LICENSES LICENSES: Add the copyleft-next-0.3.1 license 2022-11-08 15:44:01 +01:00
mm mm/damon/sysfs: eliminate potential uninitialized variable warning 2023-12-13 18:45:11 +01:00
net net/smc: fix missing byte order conversion in CLC handshake 2023-12-13 18:45:11 +01:00
rust rust: docs: fix logo replacement 2023-10-19 16:40:00 +02:00
samples samples/bpf: syscall_tp_user: Fix array out-of-bound access 2023-11-28 17:19:48 +00:00
scripts scripts/gdb: fix lx-device-list-bus and lx-device-list-class 2023-12-13 18:45:19 +01:00
security apparmor: Fix regression in mount mediation 2023-11-28 17:20:07 +00:00
sound ASoC: wm_adsp: fix memleak in wm_adsp_buffer_populate 2023-12-13 18:45:16 +01:00
tools selftests/net: mptcp: fix uninitialized variable warnings 2023-12-08 08:52:22 +01:00
usr initramfs: Encode dependency on KBUILD_BUILD_TIMESTAMP 2023-06-06 17:54:49 +09:00
virt ARM: 2023-09-07 13:52:20 -07:00
.clang-format iommu: Add for_each_group_device() 2023-05-23 08:15:51 +02:00
.cocciconfig
.get_maintainer.ignore get_maintainer: add Alan to .get_maintainer.ignore 2022-08-20 15:17:44 -07:00
.gitattributes .gitattributes: set diff driver for Rust source code files 2023-05-31 17:48:25 +02:00
.gitignore kbuild: rpm-pkg: rename binkernel.spec to kernel.spec 2023-07-25 00:59:33 +09:00
.mailmap 20 hotfixes. 12 are cc:stable and the remainder address post-6.5 issues 2023-10-24 09:52:16 -10:00
.rustfmt.toml rust: add .rustfmt.toml 2022-09-28 09:02:20 +02:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS USB: Remove Wireless USB and UWB documentation 2023-08-09 14:17:32 +02:00
Kbuild Kbuild updates for v6.1 2022-10-10 12:00:45 -07:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS Char/Misc driver fixes for 6.6-final 2023-10-28 07:51:27 -10:00
Makefile Linux 6.6.6 2023-12-11 10:40:17 +01:00
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.