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idt_scan_mws() puts a large fixed-size array on the stack and copies it into a smaller dynamically allocated array at the end. On 32-bit targets, the fixed size can easily exceed the warning limit for possible stack overflow: drivers/ntb/hw/idt/ntb_hw_idt.c:1041:27: error: stack frame size (1032) exceeds limit (1024) in 'idt_scan_mws' [-Werror,-Wframe-larger-than] Change it to instead just always use dynamic allocation for the array from the start. It's too big for the stack, but not actually all that much for a permanent allocation. Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/all/202205111109.PiKTruEj-lkp@intel.com/ Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Dave Jiang <dave.jiang@intel.com> Reviewed-by: Damien Le Moal <dlemoal@kernel.org> Signed-off-by: Jon Mason <jdmason@kudzu.us>
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.