path: root/arch/x86/kernel/setup_percpu.c
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authorJosh Poimboeuf <jpoimboe@redhat.com>2016-08-18 10:59:07 -0500
committerIngo Molnar <mingo@kernel.org>2016-08-18 18:41:32 +0200
commit8b927d734122f3021c5999aaeffaa2a36ab224c2 (patch)
treed5599086d4a9b0c06dfce446f5f67e87eb04a0c4 /arch/x86/kernel/setup_percpu.c
parent72b4f6a5e903b071f2a7c4eb1418cbe4eefdc344 (diff)
proc: Fix return address printk conversion specifer in /proc/<pid>/stack
When printing call return addresses found on a stack, /proc/<pid>/stack can sometimes give a confusing result. If the call instruction was the last instruction in the function (which can happen when calling a noreturn function), '%pS' will incorrectly display the name of the function which happens to be next in the object code, rather than the name of the actual calling function. Use '%pB' instead, which was created for this exact purpose. Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Byungchul Park <byungchul.park@lge.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Kees Cook <keescook@chromium.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Nilay Vaish <nilayvaish@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/47ad2821e5ebdbed1fbf83fb85424ae4fbdf8b6e.1471535549.git.jpoimboe@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/kernel/setup_percpu.c')
0 files changed, 0 insertions, 0 deletions