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Tiezhu Yang 1e47f3466f samples/kretprobes: Fix return value if register_kretprobe() failed 
[ Upstream commit f76fbbbb50 ]

Use the actual return value instead of always -1 if register_kretprobe()
failed.

E.g. without this patch:

 # insmod samples/kprobes/kretprobe_example.ko func=no_such_func
 insmod: ERROR: could not insert module samples/kprobes/kretprobe_example.ko: Operation not permitted

With this patch:

 # insmod samples/kprobes/kretprobe_example.ko func=no_such_func
 insmod: ERROR: could not insert module samples/kprobes/kretprobe_example.ko: Unknown symbol in module

Link: https://lkml.kernel.org/r/1635213091-24387-2-git-send-email-yangtiezhu@loongson.cn

Fixes: 804defea1c ("Kprobes: move kprobe examples to samples/")
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-11-26 11:36:11 +01:00
arch s390/gmap: don't unconditionally call pte_unmap_unlock() in __gmap_zap() 2021-11-26 11:36:10 +01:00
block Revert "block, bfq: honor already-setup queue merges" 2021-10-06 15:31:23 +02:00
certs certs: Trigger creation of RSA module signing key if it's not an RSA key 2021-09-22 11:47:51 +02:00
crypto crypto: shash - avoid comparing pointers to exported functions under CFI 2021-07-20 16:15:44 +02:00
Documentation xen/balloon: add late_initcall_sync() for initial ballooning done 2021-11-26 11:36:02 +01:00
drivers irq: mips: avoid nested irq_enter() 2021-11-26 11:36:11 +01:00
firmware Fix built-in early-load Intel microcode alignment 2020-01-23 08:21:29 +01:00
fs tracefs: Have tracefs directories not set OTH permission bits by default 2021-11-26 11:36:05 +01:00
include task_stack: Fix end_of_stack() for architectures with upwards-growing stack 2021-11-26 11:36:07 +01:00
init pid: take a reference when initializing cad_pid 2021-06-10 13:24:06 +02:00
ipc ipc/util.c: sysvipc_find_ipc() incorrectly updates position index 2020-05-20 08:18:40 +02:00
kernel PM: hibernate: fix sparse warnings 2021-11-26 11:36:10 +01:00
lib lib/xz: Validate the value before assigning it to an enum variable 2021-11-26 11:36:06 +01:00
LICENSES LICENSES: Remove CC-BY-SA-4.0 license text 2018-10-18 11:28:50 +02:00
mm mm, slub: fix mismatch between reconstructed freelist depth and cnt 2021-10-27 09:53:14 +02:00
net tcp: don't free a FIN sk_buff in tcp_remove_empty_skb() 2021-11-26 11:36:11 +01:00
samples samples/kretprobes: Fix return value if register_kretprobe() failed 2021-11-26 11:36:11 +01:00
scripts leaking_addresses: Always print a trailing newline 2021-11-26 11:36:06 +01:00
security smackfs: use netlbl_cfg_cipsov4_del() for deleting cipso_v4_doi 2021-11-26 11:36:10 +01:00
sound ALSA: mixer: fix deadlock in snd_mixer_oss_set_volume 2021-11-26 11:36:02 +01:00
tools tools/vm/page-types: remove dependency on opt_file for idle page tracking 2021-10-09 14:11:03 +02:00
usr initramfs: restore default compression behavior 2020-04-13 10:44:59 +02:00
virt KVM: remember position in kvm->vcpus array 2021-09-26 13:39:46 +02:00
.clang-format clang-format: Set IndentWrappedFunctionNames false 2018-08-01 18:38:51 +02:00
.cocciconfig
.get_maintainer.ignore
.gitattributes .gitattributes: set git diff driver for C source code files 2016-10-07 18:46:30 -07:00
.gitignore Kbuild updates for v4.17 (2nd) 2018-04-15 17:21:30 -07:00
.mailmap libnvdimm-for-4.19_misc 2018-08-25 18:13:10 -07:00
COPYING COPYING: use the new text with points to the license files 2018-03-23 12:41:45 -06:00
CREDITS 9p: remove Ron Minnich from MAINTAINERS 2018-08-17 16:20:26 -07:00
Kbuild Kbuild updates for v4.15 2017-11-17 17:45:29 -08:00
Kconfig kconfig: move the "Executable file formats" menu to fs/Kconfig.binfmt 2018-08-02 08:06:55 +09:00
MAINTAINERS Documentation/llvm: add documentation on building w/ Clang/LLVM 2020-09-26 18:01:31 +02:00
Makefile Linux 4.19.217 2021-11-12 14:40:52 +01:00
README Docs: Added a pointer to the formatted docs to README 2018-03-21 09:02:53 -06:00

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.
See Documentation/00-INDEX for a list of what is contained in each file.

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.