From f61b8706075a1d04ed27cec369e35cf128c728c3 Mon Sep 17 00:00:00 2001 From: Stephen Boyd Date: Wed, 7 Jul 2021 18:09:24 -0700 Subject: [PATCH] arm64: stacktrace: use %pSb for backtrace printing Let's use the new printk format to print the stacktrace entry when printing a backtrace to the kernel logs. This will include any module's build ID[1] in it so that offline/crash debugging can easily locate the debuginfo for a module via something like debuginfod[2]. Link: https://lkml.kernel.org/r/20210511003845.2429846-7-swboyd@chromium.org Link: https://fedoraproject.org/wiki/Releases/FeatureBuildId [1] Link: https://sourceware.org/elfutils/Debuginfod.html [2] Signed-off-by: Stephen Boyd Acked-by: Catalin Marinas Cc: Will Deacon Cc: Jiri Olsa Cc: Alexei Starovoitov Cc: Jessica Yu Cc: Evan Green Cc: Hsin-Yi Wang Cc: Petr Mladek Cc: Steven Rostedt Cc: Andy Shevchenko Cc: Matthew Wilcox Cc: Baoquan He Cc: Borislav Petkov Cc: Dave Young Cc: Ingo Molnar Cc: Konstantin Khlebnikov Cc: Rasmus Villemoes Cc: Sasha Levin Cc: Sergey Senozhatsky Cc: Thomas Gleixner Cc: Vivek Goyal Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/arm64/kernel/stacktrace.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/kernel/stacktrace.c b/arch/arm64/kernel/stacktrace.c index b189de5..b83c8d9119 100644 --- a/arch/arm64/kernel/stacktrace.c +++ b/arch/arm64/kernel/stacktrace.c @@ -153,7 +153,7 @@ NOKPROBE_SYMBOL(walk_stackframe); static void dump_backtrace_entry(unsigned long where, const char *loglvl) { - printk("%s %pS\n", loglvl, (void *)where); + printk("%s %pSb\n", loglvl, (void *)where); } void dump_backtrace(struct pt_regs *regs, struct task_struct *tsk, -- 2.7.4