From: Dan Carpenter <dan.carpenter@oracle.com> stable inclusion from stable-5.10.70 commit 0595fc4794c3b0ac9c88d7c609d66c71ba9811b5 bugzilla: 182949 https://gitee.com/openeuler/kernel/issues/I4I3GQ Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=... -------------------------------- [ Upstream commit 6dacc371b77f473770ec646e220303a84fe96c11 ] The limit should be "PAGE_SIZE - len" instead of "PAGE_SIZE". We're not going to hit the limit so this fix will not affect runtime. Link: https://lore.kernel.org/r/20210916132331.GE25094@kili Fixes: 5b9e70b22cc5 ("scsi: lpfc: raise sg count for nvme to use available sg resources") Reviewed-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Sasha Levin <sashal@kernel.org> Signed-off-by: Chen Jun <chenjun102@huawei.com> Acked-by: Weilong Chen <chenweilong@huawei.com> Signed-off-by: Chen Jun <chenjun102@huawei.com> --- drivers/scsi/lpfc/lpfc_attr.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/lpfc/lpfc_attr.c b/drivers/scsi/lpfc/lpfc_attr.c index bdea2867516c..2c59a5bf3539 100644 --- a/drivers/scsi/lpfc/lpfc_attr.c +++ b/drivers/scsi/lpfc/lpfc_attr.c @@ -6005,7 +6005,8 @@ lpfc_sg_seg_cnt_show(struct device *dev, struct device_attribute *attr, len = scnprintf(buf, PAGE_SIZE, "SGL sz: %d total SGEs: %d\n", phba->cfg_sg_dma_buf_size, phba->cfg_total_seg_cnt); - len += scnprintf(buf + len, PAGE_SIZE, "Cfg: %d SCSI: %d NVME: %d\n", + len += scnprintf(buf + len, PAGE_SIZE - len, + "Cfg: %d SCSI: %d NVME: %d\n", phba->cfg_sg_seg_cnt, phba->cfg_scsi_seg_cnt, phba->cfg_nvme_seg_cnt); return len; -- 2.20.1