The percpu area overflow_stacks is exported from arch/riscv/kernel/traps.c for use in the entry code, but is not declared anywhere. Add the relevant declaration to arch/riscv/include/asm/stacktrace.h to silence the following sparse warning: arch/riscv/kernel/traps.c:395:1: warning: symbol '__pcpu_scope_overflow_stack' was not declared. Should it be static? We don't add the stackinfo_get_overflow() call as for some of the other architectures as this doesn't seem to be used yet, so just silence the warning. Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk> Reviewed-by: Conor Dooley <conor.dooley@microchip.com> Fixes: be97d0db5f44 ("riscv: VMAP_STACK overflow detection thread-safe") Link: https://lore.kernel.org/r/20231123134214.81481-1-ben.dooks@codethink.co.uk Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
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.
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