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bf2c7bf5c4
The kernel test robot reported a Smatch warning: kernel/liveupdate/luo_core.c:402 luo_ioctl() warn: unsigned 'nr' is never less than zero. This occurs because 'nr' is unsigned and LIVEUPDATE_CMD_BASE is currently defined as 0, making the check (nr < LIVEUPDATE_CMD_BASE) always false. Remove the explicit lower bound check. The logic remains correct because 'nr' is unsigned; if nr is less than LIVEUPDATE_CMD_BASE, the expression (nr - LIVEUPDATE_CMD_BASE) will wrap around to a large positive value. This will inevitably be larger than ARRAY_SIZE(luo_ioctl_ops) and be caught by the upper bound check. Link: https://lkml.kernel.org/r/20251130010919.1488230-1-pasha.tatashin@soleen.com Signed-off-by: Pasha Tatashin <pasha.tatashin@soleen.com> Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202511280300.6pvBmXUS-lkp@intel.com/ Reviewed-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Cc: David Matlack <dmatlack@google.com> Cc: Pratyush Yadav <pratyush@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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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 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.