From d9cdb43189ef9aa4f8a12b00e86875544942fa6a Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Wed, 17 May 2023 15:10:56 +0200 Subject: panic: make function declarations visible A few panic() related functions have a global definition but not declaration, which causes a warning with W=1: kernel/panic.c:710:6: error: no previous prototype for '__warn_printk' [-Werror=missing-prototypes] kernel/panic.c:756:24: error: no previous prototype for '__stack_chk_fail' [-Werror=missing-prototypes] kernel/exit.c:1917:32: error: no previous prototype for 'abort' [-Werror=missing-prototypes] __warn_printk() is called both as a global function when CONFIG_BUG is enabled, and as a local function in other configs. The other two here are called indirectly from generated or assembler code. Add prototypes for all of these. Link: https://lkml.kernel.org/r/20230517131102.934196-9-arnd@kernel.org Signed-off-by: Arnd Bergmann Cc: Boqun Feng Cc: Catalin Marinas Cc: Christoph Lameter Cc: Dennis Zhou Cc: Eric Paris Cc: Heiko Carstens Cc: Helge Deller Cc: Ingo Molnar Cc: Michael Ellerman Cc: Michal Simek Cc: Palmer Dabbelt Cc: Paul Moore Cc: Pavel Machek Cc: Peter Zijlstra Cc: Rafael J. Wysocki Cc: Russell King Cc: Tejun Heo Cc: Thomas Bogendoerfer Cc: Thomas Gleixner Cc: Waiman Long Cc: Will Deacon Signed-off-by: Andrew Morton --- include/linux/panic.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux/panic.h') diff --git a/include/linux/panic.h b/include/linux/panic.h index 979b776e3bcb..6717b15e798c 100644 --- a/include/linux/panic.h +++ b/include/linux/panic.h @@ -32,6 +32,9 @@ extern int sysctl_panic_on_stackoverflow; extern bool crash_kexec_post_notifiers; +extern void __stack_chk_fail(void); +void abort(void); + /* * panic_cpu is used for synchronizing panic() and crash_kexec() execution. It * holds a CPU number which is executing panic() currently. A value of -- cgit v1.2.3