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After commit77c12fc959("watchdog/hardlockup: add a "cpu" param to watchdog_hardlockup_check()") we started storing a `struct cpumask` on the stack in watchdog_hardlockup_check(). On systems with CONFIG_NR_CPUS set to 8192 this takes up 1K on the stack. That triggers warnings with `CONFIG_FRAME_WARN` set to 1024. We'll use the new trigger_allbutcpu_cpu_backtrace() to avoid needing to use a CPU mask at all. Link: https://lkml.kernel.org/r/20230804065935.v4.2.I501ab68cb926ee33a7c87e063d207abf09b9943c@changeid Fixes:77c12fc959("watchdog/hardlockup: add a "cpu" param to watchdog_hardlockup_check()") Signed-off-by: Douglas Anderson <dianders@chromium.org> Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/r/202307310955.pLZDhpnl-lkp@intel.com Acked-by: Michal Hocko <mhocko@suse.com> Reviewed-by: Petr Mladek <pmladek@suse.com> Cc: Lecopzer Chen <lecopzer.chen@mediatek.com> Cc: Pingfan Liu <kernelfans@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.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.