This is a note to let you know that I've just added the patch titled scsi: megaraid_sas: Check valid aen class range to avoid kernel panic to the 4.9-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: scsi-megaraid_sas-check-valid-aen-class-range-to-avoid-kernel-panic.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 91b3d9f0069c8307d0b3a4c6843b65a439183318 Mon Sep 17 00:00:00 2001 From: Shivasharan S <shivasharan.srikanteshwara@xxxxxxxxxxxx> Date: Wed, 23 Aug 2017 04:47:01 -0700 Subject: scsi: megaraid_sas: Check valid aen class range to avoid kernel panic From: Shivasharan S <shivasharan.srikanteshwara@xxxxxxxxxxxx> commit 91b3d9f0069c8307d0b3a4c6843b65a439183318 upstream. Signed-off-by: Kashyap Desai <kashyap.desai@xxxxxxxxxxxx> Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@xxxxxxxxxxxx> Reviewed-by: Hannes Reinecke <hare@xxxxxxxx> Reviewed-by: Tomas Henzl <thenzl@xxxxxxxxxx> Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/scsi/megaraid/megaraid_sas_base.c | 8 ++++++++ 1 file changed, 8 insertions(+) --- a/drivers/scsi/megaraid/megaraid_sas_base.c +++ b/drivers/scsi/megaraid/megaraid_sas_base.c @@ -5460,6 +5460,14 @@ megasas_register_aen(struct megasas_inst prev_aen.word = le32_to_cpu(instance->aen_cmd->frame->dcmd.mbox.w[1]); + if ((curr_aen.members.class < MFI_EVT_CLASS_DEBUG) || + (curr_aen.members.class > MFI_EVT_CLASS_DEAD)) { + dev_info(&instance->pdev->dev, + "%s %d out of range class %d send by application\n", + __func__, __LINE__, curr_aen.members.class); + return 0; + } + /* * A class whose enum value is smaller is inclusive of all * higher values. If a PROGRESS (= -1) was previously Patches currently in stable-queue which might be from shivasharan.srikanteshwara@xxxxxxxxxxxx are queue-4.9/scsi-megaraid_sas-check-valid-aen-class-range-to-avoid-kernel-panic.patch queue-4.9/scsi-megaraid_sas-return-pended-ioctls-with-cmd_status-mfi_stat_wrong_state-in-case-adapter-is-dead.patch queue-4.9/scsi-megaraid_sas-set-minimum-value-of-resetwaittime-to-be-1-secs.patch