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scsi: megaraid_sas: Check valid aen class range to avoid kernel panic

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commit 91b3d9f006 upstream.

Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com>
Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Shivasharan S
2017-08-23 04:47:01 -07:00
committed by Greg Kroah-Hartman
parent 7efc41514a
commit c62da79e1b
1 changed files with 8 additions and 0 deletions
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8
drivers/scsi/megaraid/megaraid_sas_base.c
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@ -5460,6 +5460,14 @@ megasas_register_aen(struct megasas_instance *instance, u32 seq_num,
prev_aen.word = prev_aen.word =
le32_to_cpu(instance->aen_cmd->frame->dcmd.mbox.w[1]); 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 * A class whose enum value is smaller is inclusive of all
* higher values. If a PROGRESS (= -1) was previously * higher values. If a PROGRESS (= -1) was previously