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65fc965c70
Since arm64 kernel initializes breakpoint trap vector in arch_initcall(),
initializing kprobe (and run smoke test) in postcore_initcall() causes
a kernel panic.
To fix this issue, move the kprobe initialization in subsys_initcall()
(which is called right afer the arch_initcall).
In-kernel kprobe users (ftrace and bpf) are using fs_initcall() which is
called after subsys_initcall(), so this shouldn't cause more problem.
Link: http://lkml.kernel.org/r/155956708268.12228.10363800793132214198.stgit@devnote2
Link: http://lkml.kernel.org/r/20190709153755.GB10123@lakrids.cambridge.arm.com
Reported-by: Anders Roxell <anders.roxell@linaro.org>
Fixes: b5f8b32c93 ("kprobes: Initialize kprobes at postcore_initcall")
Tested-by: Anders Roxell <anders.roxell@linaro.org>
Tested-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-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.