scsi: lpfc: Fix crash involving race between FLOGI timeout and devloss handler
When a FLOGI completes with a sequence timeout error, a freed kref ptr dereference crash can occur due to a timing race involving ndlp referencing in lpfc_dev_loss_tmo_callbk. Fix by ensuring the driver accounts for an outstanding FLOGI when dev_loss is active. Also, don't remove the HBA_FLOGI_OUTSTANDING flag when the FLOGI is retried to allow the driver to handle the reference counts correctly in lpfc_dev_loss_tmo_handler. Reported-by: Dietmar Hahn <dietmar.hahn@fujitsu.com> Tested-by: Dietmar Hahn <dietmar.hahn@fujitsu.com> Signed-off-by: Justin Tee <justin.tee@broadcom.com> Link: https://lore.kernel.org/r/20221116011921.105995-5-justintee8345@gmail.comSigned-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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