From ebfc15019cfa72496c674ffcb0b8ef10790dcddc Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Fri, 2 Feb 2018 15:56:17 +0100 Subject: [PATCH] x86/dumpstack: Avoid uninitlized variable In some configurations, 'partial' does not get initialized, as shown by this gcc-8 warning: arch/x86/kernel/dumpstack.c: In function 'show_trace_log_lvl': arch/x86/kernel/dumpstack.c:156:4: error: 'partial' may be used uninitialized in this function [-Werror=maybe-uninitialized] show_regs_if_on_stack(&stack_info, regs, partial); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ This initializes it to false, to get the previous behavior in this case. Fixes: a9cdbe72c4e8 ("x86/dumpstack: Fix partial register dumps") Signed-off-by: Arnd Bergmann Signed-off-by: Thomas Gleixner Cc: Andi Kleen Cc: Nicolas Pitre Cc: Peter Zijlstra Cc: Dave Hansen Cc: Andy Lutomirski Cc: Josh Poimboeuf Cc: Borislav Petkov Cc: Vlastimil Babka Link: https://lkml.kernel.org/r/20180202145634.200291-1-arnd@arndb.de --- arch/x86/kernel/dumpstack.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kernel/dumpstack.c b/arch/x86/kernel/dumpstack.c index afbecff161d1..a2d8a3908670 100644 --- a/arch/x86/kernel/dumpstack.c +++ b/arch/x86/kernel/dumpstack.c @@ -109,7 +109,7 @@ void show_trace_log_lvl(struct task_struct *task, struct pt_regs *regs, struct stack_info stack_info = {0}; unsigned long visit_mask = 0; int graph_idx = 0; - bool partial; + bool partial = false; printk("%sCall Trace:\n", log_lvl);