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scsi: qla2xxx: Fix NULL pointer access due to redundant fc_host_port_name call

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Remove redundant fc_host_port_name calls to prevent early access of
scsi_host->shost_data buffer. This prevent null pointer access.

Following stack trace is seen:

BUG: unable to handle kernel NULL pointer dereference at 00000000000008
IP: qla24xx_report_id_acquisition+0x22d/0x3a0 [qla2xxx]

Cc: <[email protected]> # v4.11+
Signed-off-by: Quinn Tran <[email protected]>
Signed-off-by: Himanshu Madhani <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
This commit is contained in:
Quinn Tran 2017-05-24 18:06:19 -07:00 • committed by Martin K. Petersen
commit 0ea88662b5
1 changed files with 0 additions and 9 deletions
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9
drivers/scsi/qla2xxx/qla_mbx.c
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@ -3676,15 +3676,6 @@ qla24xx_report_id_acquisition(scsi_qla_host_t *vha,
qlt_update_host_map(vha, id);
}
fc_host_port_name(vha->host) =
wwn_to_u64(vha->port_name);
if (qla_ini_mode_enabled(vha))
ql_dbg(ql_dbg_mbx, vha, 0x1018,
"FA-WWN portname %016llx (%x)\n",
fc_host_port_name(vha->host),
rptid_entry->vp_status);
set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
} else {