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915c31f0e6
The syscalls_sys_{enter,exit} map in augmented_raw_syscalls.bpf.c has
max entries of 512. Usually syscall numbers are smaller than this but
x86 has x32 ABI where syscalls start from 512.
That makes trace__init_syscalls_bpf_prog_array_maps() fail in the middle
of the loop when it accesses those keys. As the loop iteration is not
ordered by syscall numbers anymore, the failure can affect non-x32
syscalls.
Let's increase the map size to 1024 so that it can handle those ABIs
too. While most systems won't need this, increasing the size will be
safer for potential future changes.
Reviewed-by: Howard Chu <howardchu95@gmail.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
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| 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 reStructuredText 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.