From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:60520 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751089AbdGGTHH (ORCPT ); Fri, 7 Jul 2017 15:07:07 -0400 Date: Fri, 07 Jul 2017 12:07:06 -0700 From: akpm@linux-foundation.org To: daniel@iogearbox.net, marcin.nowakowski@imgtec.com, mhiramat@kernel.org, mingo@kernel.org, mm-commits@vger.kernel.org, paul.gortmaker@windriver.com, peterz@infradead.org, rostedt@goodmis.org, stable@vger.kernel.org, tglx@linutronix.de, thomas@m3y3r.de Subject: [merged] kernel-extablec-mark-core_kernel_text-notrace.patch removed from -mm tree Message-ID: <20170707190706.qDMlSUEtk%akpm@linux-foundation.org> Sender: stable-owner@vger.kernel.org List-ID: The patch titled Subject: kernel/extable.c: mark core_kernel_text notrace has been removed from the -mm tree. Its filename was kernel-extablec-mark-core_kernel_text-notrace.patch This patch was dropped because it was merged into mainline or a subsystem tree ------------------------------------------------------ From: Marcin Nowakowski Subject: kernel/extable.c: mark core_kernel_text notrace core_kernel_text is used by MIPS in its function graph trace processing, so having this method traced leads to an infinite set of recursive calls such as: [ 2.972075] Call Trace: [ 2.972111] [ 2.976731] [<80506584>] ftrace_return_to_handler+0x50/0x128 [ 2.983379] [<8045478c>] core_kernel_text+0x10/0x1b8 [ 2.989146] [<804119b8>] prepare_ftrace_return+0x6c/0x114 [ 2.995402] [<80411b2c>] ftrace_graph_caller+0x20/0x44 [ 3.001362] [<80411b60>] return_to_handler+0x10/0x30 [ 3.007159] [<80411b50>] return_to_handler+0x0/0x30 [ 3.012827] [<80411b50>] return_to_handler+0x0/0x30 [ 3.018621] [<804e589c>] ftrace_ops_no_ops+0x114/0x1bc [ 3.024602] [<8045478c>] core_kernel_text+0x10/0x1b8 [ 3.030377] [<8045478c>] core_kernel_text+0x10/0x1b8 [ 3.036140] [<8045478c>] core_kernel_text+0x10/0x1b8 [ 3.041915] [<804e589c>] ftrace_ops_no_ops+0x114/0x1bc [ 3.047923] [<8045478c>] core_kernel_text+0x10/0x1b8 [ 3.053682] [<804119b8>] prepare_ftrace_return+0x6c/0x114 [ 3.059938] [<80411b2c>] ftrace_graph_caller+0x20/0x44 (...) Mark the function notrace to avoid it being traced. Link: http://lkml.kernel.org/r/1498028607-6765-1-git-send-email-marcin.nowakowski@imgtec.com Signed-off-by: Marcin Nowakowski Reviewed-by: Masami Hiramatsu Cc: Peter Zijlstra Cc: Thomas Meyer Cc: Ingo Molnar Cc: Steven Rostedt Cc: Daniel Borkmann Cc: Paul Gortmaker Cc: Thomas Gleixner Cc: Signed-off-by: Andrew Morton --- kernel/extable.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff -puN kernel/extable.c~kernel-extablec-mark-core_kernel_text-notrace kernel/extable.c --- a/kernel/extable.c~kernel-extablec-mark-core_kernel_text-notrace +++ a/kernel/extable.c @@ -69,7 +69,7 @@ static inline int init_kernel_text(unsig return 0; } -int core_kernel_text(unsigned long addr) +int notrace core_kernel_text(unsigned long addr) { if (addr >= (unsigned long)_stext && addr < (unsigned long)_etext) _ Patches currently in -mm which might be from marcin.nowakowski@imgtec.com are