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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>
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.