riscv: traps: add missing prototype

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commit d951b20b9d upstream.

Sparse complains:
arch/riscv/kernel/traps.c:213:6: warning: symbol 'shadow_stack' was not declared. Should it be static?

The variable is used in entry.S, so declare shadow_stack there
alongside SHADOW_OVERFLOW_STACK_SIZE.

Fixes: 31da94c25a ("riscv: add VMAP_STACK overflow detection")
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20220814141237.493457-5-mail@conchuod.ie
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Conor Dooley 2022-08-14 15:12:38 +01:00 • committed by Greg Kroah-Hartman

parent f80d72069e

commit b8e86aef0a

2 changed files with 4 additions and 1 deletions

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arch/riscv/include/asm/thread_info.h

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3

arch/riscv/kernel/traps.c

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