From: Gu Zitao <guzitao@wxiat.com> Sunway inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I4SPZD CVE: NA ------------------------------- On SUBARCH_C3B, when using the original driver for LSI MegaRAID SAS-3 PCIe card, a kernel panic may arise from accessing an illegal address. Make some changes for SUBARCH_C3B to avoid it. But it may not be avoided entirely. Signed-off-by: Gu Zitao <guzitao@wxiat.com> #openEuler_contributor Signed-off-by: Laibin Qiu <qiulaibin@huawei.com> Reviewed-by: Hanjun Guo <guohanjun@huawei.com> Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com> --- drivers/scsi/megaraid/megaraid_sas_fusion.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c index b8ec6db532b0..1cfa2c9db4f2 100644 --- a/drivers/scsi/megaraid/megaraid_sas_fusion.c +++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c @@ -3506,6 +3506,14 @@ complete_cmd_fusion(struct megasas_instance *instance, u32 MSIxIndex, d_val.u.high != cpu_to_le32(UINT_MAX)) { smid = le16_to_cpu(reply_desc->SMID); +#ifdef CONFIG_SUBARCH_C3B + if (smid == 0xffff) { + smid = d_val.u.low >> 16; + if (smid == 0xffff) + break; + } +#endif + cmd_fusion = fusion->cmd_list[smid - 1]; scsi_io_req = (struct MPI2_RAID_SCSI_IO_REQUEST *) cmd_fusion->io_request; -- 2.20.1