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scsi: ibmvfc: check for NULL evt in implicit LOGO and target delete path

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Unlike ibmvfc_tgt_implicit_logout the ibmvfc_tgt_implicit_logout_and_del
path fails to check for a NULL evt returned from
ibmvfc_get_reserved_event and passes that directly to ibmvfc_send_event
which will unconditionally derefence the evt.

Check for a NULL evt and perform same escalation as
ibmvfc_implicit_logout.

Signed-off-by: Tyrel Datwyler <tyreld@linux.ibm.com>
Link: https://patch.msgid.link/20260723000149.969416-4-tyreld@linux.ibm.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Tyrel Datwyler
2026-07-22 17:01:19 -07:00
committed by Martin K. Petersen
parent 7e35396ec8
commit 0122eab60b
1 changed files with 8 additions and 0 deletions
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8
drivers/scsi/ibmvscsi/ibmvfc.c
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@@ -4406,6 +4406,14 @@ static void ibmvfc_tgt_implicit_logout_and_del(struct ibmvfc_target *tgt)
evt = __ibmvfc_tgt_get_implicit_logout_evt(tgt,
ibmvfc_tgt_implicit_logout_and_del_done);
if (!evt) {
vhost->discovery_threads--;
ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_NONE);
kref_put(&tgt->kref, ibmvfc_release_tgt);
__ibmvfc_reset_host(vhost);
return;
}
ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_LOGOUT_RPORT_WAIT);
if (ibmvfc_send_event(evt, vhost, default_timeout)) {
vhost->discovery_threads--;