CVE-2021-47203

In the Linux kernel, the following vulnerability has been resolved: scsi:
lpfc: Fix list_add() corruption in lpfc_drain_txq() When parsing the txq
list in lpfc_drain_txq(), the driver attempts to pass the requests to the
adapter. If such an attempt fails, a local “fail_msg” string is set and a
log message output. The job is then added to a completions list for
cancellation. Processing of any further jobs from the txq list continues,
but since “fail_msg” remains set, jobs are added to the completions list
regardless of whether a wqe was passed to the adapter. If successfully
added to txcmplq, jobs are added to both lists resulting in list
corruption. Fix by clearing the fail_msg string after adding a job to the
completions list. This stops the subsequent jobs from being added to the
completions list unless they had an appropriate failure.