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ac8b60be07
On an allyesconfig, with "treat warnings as errors" unset, GCC emits these warnings: kernel/locking/lockdep_proc.c:438:32: Warning: Format specifier '%lld' may be truncated when writing 1 to 17 bytes into a region of size 15 [-Wformat-truncation=] kernel/locking/lockdep_proc.c:438:31: Note: Format directive argument is in the range [-9223372036854775, 9223372036854775] kernel/locking/lockdep_proc.c:438:9: Note: 'snprintf' has output between 5 and 22 bytes into a target of size 15 In seq_time(), the longest s64 is "-9223372036854775808"-ish, which converted to the fixed-point float format is "-9223372036854775.80": 21 bytes, plus termination is another byte: 22. Therefore, a larger buffer size of 22 is needed here - not 15. The code was safe due to the snprintf(). Fix it. Signed-off-by: Lucy Mielke <lucymielke@icloud.com> Signed-off-by: Ingo Molnar <mingo@kernel.org> Link: https://lore.kernel.org/r/ZSfOEHRkZAWaQr3U@fedora.fritz.box |
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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.