scsi: megaraid_sas: Check valid aen class range to avoid kernel panic
Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com> Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Cc: stable@vger.kernel.org Reviewed-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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@ -5651,6 +5651,14 @@ megasas_register_aen(struct megasas_instance *instance, u32 seq_num,
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prev_aen.word =
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le32_to_cpu(instance->aen_cmd->frame->dcmd.mbox.w[1]);
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if ((curr_aen.members.class < MFI_EVT_CLASS_DEBUG) ||
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(curr_aen.members.class > MFI_EVT_CLASS_DEAD)) {
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dev_info(&instance->pdev->dev,
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"%s %d out of range class %d send by application\n",
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__func__, __LINE__, curr_aen.members.class);
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return 0;
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}
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/*
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* A class whose enum value is smaller is inclusive of all
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* higher values. If a PROGRESS (= -1) was previously
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