Messages in this thread Patch in this message | | | Date | Thu, 19 Sep 2019 16:39:44 +0300 | From | Cyrill Gorcunov <> | Subject | [PATCH -tip] x86/boot: Reserve enough space for any cpu level string |
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Currently when we're validating cpu on boot stage we assume that cpu level won't ever be greater than two digits. In particular the check_cpu() helper ensures to be so. Still the cpu_name() helper is a way too far from check_cpu() routine internals so I think better to be on a safe side and prevent any possible overrun errors when printing cpu name. For this sake just increase the buffer up to be able to keep any level.
CC: Ingo Molnar <mingo@kernel.org> CC: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com> --- arch/x86/boot/cpu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
Index: linux-tip.git/arch/x86/boot/cpu.c =================================================================== --- linux-tip.git.orig/arch/x86/boot/cpu.c +++ linux-tip.git/arch/x86/boot/cpu.c @@ -20,7 +20,7 @@ static char *cpu_name(int level) { - static char buf[6]; + static char buf[16]; if (level == 64) { return "x86-64";
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