This is a note to let you know that I've just added the patch titled ktest.pl: Fix incorrect reboot for grub2bls to the 5.9-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: ktest.pl-fix-incorrect-reboot-for-grub2bls.patch and it can be found in the queue-5.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 271e0c9dce1b02a825b3cc1a7aa1fab7c381d44b Mon Sep 17 00:00:00 2001 From: Libo Chen <libo.chen@xxxxxxxxxx> Date: Fri, 20 Nov 2020 18:12:43 -0800 Subject: ktest.pl: Fix incorrect reboot for grub2bls From: Libo Chen <libo.chen@xxxxxxxxxx> commit 271e0c9dce1b02a825b3cc1a7aa1fab7c381d44b upstream. This issue was first noticed when I was testing different kernels on Oracle Linux 8 which as Fedora 30+ adopts BLS as default. Even though a kernel entry was added successfully and the index of that kernel entry was retrieved correctly, ktest still wouldn't reboot the system into user-specified kernel. The bug was spotted in subroutine reboot_to where the if-statement never checks for REBOOT_TYPE "grub2bls", therefore the desired entry will not be set for the next boot. Add a check for "grub2bls" so that $grub_reboot $grub_number can be run before a reboot if REBOOT_TYPE is "grub2bls" then we can boot to the correct kernel. Link: https://lkml.kernel.org/r/20201121021243.1532477-1-libo.chen@xxxxxxxxxx Cc: stable@xxxxxxxxxxxxxxx Fixes: ac2466456eaa ("ktest: introduce grub2bls REBOOT_TYPE option") Signed-off-by: Libo Chen <libo.chen@xxxxxxxxxx> Signed-off-by: Steven Rostedt (VMware) <rostedt@xxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- tools/testing/ktest/ktest.pl | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/tools/testing/ktest/ktest.pl +++ b/tools/testing/ktest/ktest.pl @@ -2040,7 +2040,7 @@ sub reboot_to { if ($reboot_type eq "grub") { run_ssh "'(echo \"savedefault --default=$grub_number --once\" | grub --batch)'"; - } elsif ($reboot_type eq "grub2") { + } elsif (($reboot_type eq "grub2") or ($reboot_type eq "grub2bls")) { run_ssh "$grub_reboot $grub_number"; } elsif ($reboot_type eq "syslinux") { run_ssh "$syslinux --once \\\"$syslinux_label\\\" $syslinux_path"; Patches currently in stable-queue which might be from libo.chen@xxxxxxxxxx are queue-5.9/ktest.pl-fix-incorrect-reboot-for-grub2bls.patch