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Zheng Yejian 3caa693781 ftrace: Fix issue that 'direct->addr' not restored in modify_ftrace_direct() commit `2a2d8c51de` upstream. Syzkaller report a WARNING: "WARN_ON(!direct)" in modify_ftrace_direct(). Root cause is 'direct->addr' was changed from 'old_addr' to 'new_addr' but not restored if error happened on calling ftrace_modify_direct_caller(). Then it can no longer find 'direct' by that 'old_addr'. To fix it, restore 'direct->addr' to 'old_addr' explicitly in error path. Link: https://lore.kernel.org/linux-trace-kernel/20230330025223.1046087-1-zhengyejian1@huawei.com Cc: stable@vger.kernel.org Cc: <mhiramat@kernel.org> Cc: <mark.rutland@arm.com> Cc: <ast@kernel.org> Cc: <daniel@iogearbox.net> Fixes: `8a141dd7f7` ("ftrace: Fix modify_ftrace_direct.") Signed-off-by: Zheng Yejian <zhengyejian1@huawei.com> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2023-04-13 16:55:32 +02:00
Documentation	dt-bindings: serial: renesas,scif: Fix 4th IRQ for 4-IRQ SCIFs	2023-04-13 16:55:28 +02:00
LICENSES	…
arch	KVM: nVMX: Do not report error code when synthesizing VM-Exit from Real Mode	2023-04-13 16:55:30 +02:00
block	block: don't set GD_NEED_PART_SCAN if scan partition failed	2023-04-13 16:55:32 +02:00
certs	certs: Fix build error when PKCS#11 URI contains semicolon	2023-02-09 11:28:11 +01:00
crypto	crypto: rsa-pkcs1pad - Use akcipher_request_complete	2023-03-10 09:33:03 +01:00
drivers	block: ublk: make sure that block size is set correctly	2023-04-13 16:55:32 +02:00
fs	cifs: sanitize paths in cifs_update_super_prepath.	2023-04-13 16:55:32 +02:00
include	ftrace: Mark get_lock_parent_ip() __always_inline	2023-04-13 16:55:32 +02:00
init	…
io_uring	io_uring: fix memory leak when removing provided buffers	2023-04-13 16:55:31 +02:00
ipc	…
kernel	ftrace: Fix issue that 'direct->addr' not restored in modify_ftrace_direct()	2023-04-13 16:55:32 +02:00
lib	zstd: Fix definition of assert()	2023-04-06 12:10:38 +02:00
mm	mm: kfence: fix handling discontiguous page	2023-04-13 16:55:30 +02:00
net	netlink: annotate lockless accesses to nlk->max_recvmsg_len	2023-04-13 16:55:24 +02:00
rust	…
samples	…
scripts	modpost: Fix processing of CRCs on 32-bit build machines	2023-04-06 12:10:53 +02:00
security	keys: Do not cache key in task struct if key is requested from kernel thread	2023-03-30 12:49:07 +02:00
sound	ALSA: hda/realtek: fix mute/micmute LEDs for a HP ProBook	2023-04-13 16:55:29 +02:00
tools	libbpf: Fix btf_dump's packed struct determination	2023-04-06 12:10:58 +02:00
usr	…
virt	KVM: Register /dev/kvm as the _very_ last thing during initialization	2023-03-10 09:34:11 +01:00
.clang-format	…
.cocciconfig	…
.get_maintainer.ignore	…
.gitattributes	…
.gitignore	…
.mailmap	…
.rustfmt.toml	…
COPYING	…
CREDITS	…
Kbuild	…
Kconfig	…
MAINTAINERS	audit: update the mailing list in MAINTAINERS	2023-02-25 11:25:42 +01:00
Makefile	Linux 6.1.23	2023-04-06 12:10:58 +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.