This is a note to let you know that I've just added the patch titled ftrace: Optimize the allocation for mcount entries to the 6.0-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: ftrace-optimize-the-allocation-for-mcount-entries.patch and it can be found in the queue-6.0 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From bcea02b096333dc74af987cb9685a4dbdd820840 Mon Sep 17 00:00:00 2001 From: Wang Wensheng <wangwensheng4@xxxxxxxxxx> Date: Wed, 9 Nov 2022 09:44:33 +0000 Subject: ftrace: Optimize the allocation for mcount entries From: Wang Wensheng <wangwensheng4@xxxxxxxxxx> commit bcea02b096333dc74af987cb9685a4dbdd820840 upstream. If we can't allocate this size, try something smaller with half of the size. Its order should be decreased by one instead of divided by two. Link: https://lkml.kernel.org/r/20221109094434.84046-3-wangwensheng4@xxxxxxxxxx Cc: <mhiramat@xxxxxxxxxx> Cc: <mark.rutland@xxxxxxx> Cc: stable@xxxxxxxxxxxxxxx Fixes: a79008755497d ("ftrace: Allocate the mcount record pages as groups") Signed-off-by: Wang Wensheng <wangwensheng4@xxxxxxxxxx> Signed-off-by: Steven Rostedt (Google) <rostedt@xxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- kernel/trace/ftrace.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -3193,7 +3193,7 @@ static int ftrace_allocate_records(struc /* if we can't allocate this size, try something smaller */ if (!order) return -ENOMEM; - order >>= 1; + order--; goto again; } Patches currently in stable-queue which might be from wangwensheng4@xxxxxxxxxx are queue-6.0/ftrace-optimize-the-allocation-for-mcount-entries.patch queue-6.0/ftrace-fix-the-possible-incorrect-kernel-message.patch