| Message ID | 20210731075148.72494-1-islituo@gmail.com |
|---|---|
| State | New |
| Headers | show |
| Series | scsi: csiostor: fix possible null-pointer dereference in csio_eh_lun_reset_handler() | expand |
diff --git a/drivers/scsi/csiostor/csio_scsi.c b/drivers/scsi/csiostor/csio_scsi.c index 56b9ad0a1ca0..df0bf8348860 100644 --- a/drivers/scsi/csiostor/csio_scsi.c +++ b/drivers/scsi/csiostor/csio_scsi.c @@ -2070,7 +2070,7 @@ csio_eh_lun_reset_handler(struct scsi_cmnd *cmnd) struct csio_scsi_level_data sld; if (!rn) - goto fail; + return FAILED; csio_dbg(hw, "Request to reset LUN:%llu (ssni:0x%x tgtid:%d)\n", cmnd->device->lun, rn->flowid, rn->scsi_id);
The variable rn is checked in: if (!rn) If rn is NULL, the program goes to the label fail: fail: CSIO_INC_STATS(rn, n_lun_rst_fail); However, rn is dereferenced in this macro: #define CSIO_INC_STATS(elem, val) ((elem)->stats.val++) To fix this possible null-pointer dereference, the function returns FAILED directly if rn is NULL. Reported-by: TOTE Robot <oslab@tsinghua.edu.cn> Signed-off-by: Tuo Li <islituo@gmail.com> --- drivers/scsi/csiostor/csio_scsi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)