This is a note to let you know that I've just added the patch titled x86/mce: Mark mce_read_aux() noinstr to the 5.15-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: x86-mce-mark-mce_read_aux-noinstr.patch and it can be found in the queue-5.15 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 834cb64c04c708f71fc0a1ed0282cb2fe5ed15cd Author: Borislav Petkov <bp@xxxxxxx> Date: Tue Nov 2 11:14:48 2021 +0100 x86/mce: Mark mce_read_aux() noinstr [ Upstream commit db6c996d6ce45dfb44891f0824a65ecec216f47a ] Fixes vmlinux.o: warning: objtool: do_machine_check()+0x681: call to mce_read_aux() leaves .noinstr.text section Signed-off-by: Borislav Petkov <bp@xxxxxxx> Link: https://lore.kernel.org/r/20211208111343.8130-10-bp@xxxxxxxxx Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/arch/x86/kernel/cpu/mce/core.c b/arch/x86/kernel/cpu/mce/core.c index c37a0bcf2744b..e23e74e2f928d 100644 --- a/arch/x86/kernel/cpu/mce/core.c +++ b/arch/x86/kernel/cpu/mce/core.c @@ -691,7 +691,7 @@ static struct notifier_block mce_default_nb = { /* * Read ADDR and MISC registers. */ -static void mce_read_aux(struct mce *m, int i) +static noinstr void mce_read_aux(struct mce *m, int i) { if (m->status & MCI_STATUS_MISCV) m->misc = mce_rdmsrl(msr_ops.misc(i));