From: Stephen Boyd <swboyd@chromium.org> To: Andrew Morton <akpm@linux-foundation.org> Cc: linux-kernel@vger.kernel.org, Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will@kernel.org>, linux-arm-kernel@lists.infradead.org, Jiri Olsa <jolsa@kernel.org>, Alexei Starovoitov <ast@kernel.org>, Jessica Yu <jeyu@kernel.org>, Evan Green <evgreen@chromium.org>, Hsin-Yi Wang <hsinyi@chromium.org>, Petr Mladek <pmladek@suse.com>, Steven Rostedt <rostedt@goodmis.org>, Andy Shevchenko <andriy.shevchenko@linux.intel.com>, Matthew Wilcox <willy@infradead.org> Subject: [PATCH v3 05/12] arm64: stacktrace: Use %pSb for backtrace printing Date: Tue, 30 Mar 2021 20:05:13 -0700 [thread overview] Message-ID: <20210331030520.3816265-6-swboyd@chromium.org> (raw) In-Reply-To: <20210331030520.3816265-1-swboyd@chromium.org> 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]. Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will@kernel.org> Cc: <linux-arm-kernel@lists.infradead.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Jessica Yu <jeyu@kernel.org> Cc: Evan Green <evgreen@chromium.org> Cc: Hsin-Yi Wang <hsinyi@chromium.org> Cc: Petr Mladek <pmladek@suse.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Matthew Wilcox <willy@infradead.org> Link: https://fedoraproject.org/wiki/Releases/FeatureBuildId [1] Link: https://sourceware.org/elfutils/Debuginfod.html [2] Signed-off-by: Stephen Boyd <swboyd@chromium.org> --- 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 ad20981dfda4..9d38da01ff98 100644 --- a/arch/arm64/kernel/stacktrace.c +++ b/arch/arm64/kernel/stacktrace.c @@ -129,7 +129,7 @@ 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, -- https://chromeos.dev
WARNING: multiple messages have this Message-ID (diff)
From: Stephen Boyd <swboyd@chromium.org> To: Andrew Morton <akpm@linux-foundation.org> Cc: linux-kernel@vger.kernel.org, Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will@kernel.org>, linux-arm-kernel@lists.infradead.org, Jiri Olsa <jolsa@kernel.org>, Alexei Starovoitov <ast@kernel.org>, Jessica Yu <jeyu@kernel.org>, Evan Green <evgreen@chromium.org>, Hsin-Yi Wang <hsinyi@chromium.org>, Petr Mladek <pmladek@suse.com>, Steven Rostedt <rostedt@goodmis.org>, Andy Shevchenko <andriy.shevchenko@linux.intel.com>, Matthew Wilcox <willy@infradead.org> Subject: [PATCH v3 05/12] arm64: stacktrace: Use %pSb for backtrace printing Date: Tue, 30 Mar 2021 20:05:13 -0700 [thread overview] Message-ID: <20210331030520.3816265-6-swboyd@chromium.org> (raw) In-Reply-To: <20210331030520.3816265-1-swboyd@chromium.org> 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]. Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will@kernel.org> Cc: <linux-arm-kernel@lists.infradead.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Jessica Yu <jeyu@kernel.org> Cc: Evan Green <evgreen@chromium.org> Cc: Hsin-Yi Wang <hsinyi@chromium.org> Cc: Petr Mladek <pmladek@suse.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Matthew Wilcox <willy@infradead.org> Link: https://fedoraproject.org/wiki/Releases/FeatureBuildId [1] Link: https://sourceware.org/elfutils/Debuginfod.html [2] Signed-off-by: Stephen Boyd <swboyd@chromium.org> --- 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 ad20981dfda4..9d38da01ff98 100644 --- a/arch/arm64/kernel/stacktrace.c +++ b/arch/arm64/kernel/stacktrace.c @@ -129,7 +129,7 @@ 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, -- https://chromeos.dev _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2021-03-31 3:06 UTC|newest] Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-03-31 3:05 [PATCH v3 00/12] Add build ID to stacktraces Stephen Boyd 2021-03-31 3:05 ` Stephen Boyd 2021-03-31 3:05 ` Stephen Boyd 2021-03-31 3:05 ` [PATCH v3 01/12] buildid: Add API to parse build ID out of buffer Stephen Boyd 2021-03-31 3:05 ` [PATCH v3 02/12] buildid: Stash away kernels build ID on init Stephen Boyd 2021-03-31 3:05 ` Stephen Boyd 2021-04-08 12:05 ` Jessica Yu 2021-04-08 12:05 ` Jessica Yu 2021-04-08 18:52 ` Stephen Boyd 2021-04-08 18:52 ` Stephen Boyd 2021-03-31 3:05 ` [PATCH v3 03/12] dump_stack: Add vmlinux build ID to stack traces Stephen Boyd 2021-04-07 13:42 ` Petr Mladek 2021-04-08 5:44 ` Stephen Boyd 2021-04-07 14:03 ` Petr Mladek 2021-04-08 1:14 ` Stephen Boyd 2021-04-08 6:20 ` Stephen Boyd 2021-04-08 10:13 ` Petr Mladek 2021-04-08 19:52 ` Stephen Boyd 2021-04-08 21:08 ` Stephen Boyd 2021-04-09 9:19 ` Petr Mladek 2021-03-31 3:05 ` [PATCH v3 04/12] module: Add printk format to add module build ID to stacktraces Stephen Boyd 2021-04-07 14:54 ` Petr Mladek 2021-04-07 15:07 ` Andy Shevchenko 2021-04-07 15:03 ` Petr Mladek 2021-04-07 15:37 ` Andy Shevchenko 2021-04-08 6:58 ` Stephen Boyd 2021-04-08 13:44 ` Jessica Yu 2021-04-08 14:05 ` Andy Shevchenko 2021-04-08 19:57 ` Stephen Boyd 2021-03-31 3:05 ` Stephen Boyd [this message] 2021-03-31 3:05 ` [PATCH v3 05/12] arm64: stacktrace: Use %pSb for backtrace printing Stephen Boyd 2021-03-31 3:05 ` [PATCH v3 06/12] x86/dumpstack: " Stephen Boyd 2021-03-31 3:05 ` [PATCH v3 07/12] scripts/decode_stacktrace.sh: Support debuginfod Stephen Boyd 2021-03-31 3:05 ` [PATCH v3 08/12] scripts/decode_stacktrace.sh: Silence stderr messages from addr2line/nm Stephen Boyd 2021-03-31 3:05 ` [PATCH v3 09/12] scripts/decode_stacktrace.sh: Indicate 'auto' can be used for base path Stephen Boyd 2021-03-31 3:05 ` [PATCH v3 10/12] buildid: Mark some arguments const Stephen Boyd 2021-03-31 3:05 ` [PATCH v3 11/12] buildid: Fix kernel-doc notation Stephen Boyd 2021-03-31 3:05 ` [PATCH v3 12/12] kdump: Use vmlinux_build_id to simplify Stephen Boyd 2021-03-31 3:05 ` Stephen Boyd 2021-04-07 17:03 ` Petr Mladek 2021-04-07 17:03 ` Petr Mladek 2021-04-08 5:36 ` Stephen Boyd 2021-04-08 5:36 ` Stephen Boyd 2021-04-08 10:17 ` Baoquan He 2021-04-08 10:17 ` Baoquan He 2021-04-08 19:58 ` Stephen Boyd 2021-04-08 19:58 ` Stephen Boyd
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