FYI, we noticed the below changes on

git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
commit 984f1733fcee3fbc78d47e26c5096921c5d9946a ("[SCSI] sd: Fix potential out-of-bounds access")

In the following dmesgs, something new appears:

[sdx] No Caching mode page found

<5>[   40.078433] scsi 6:1:0:0: Direct-Access     LSI      Logical Volume   3000 PQ: 0 ANSI: 6
<6>[   40.088275] scsi 6:1:0:0: RAID0: handle(0x011e), wwid(0x0f7d60fc0e769932), pd_count(2), type(SSP)
<6>[   40.098612] scsi 6:1:0:0: qdepth(254), tagged(1), simple(0), ordered(0), scsi_level(7), cmd_que(1)
<5>[   40.110662] scsi 6:0:0:0: Direct-Access     SEAGATE  ST9300653SS      0004 PQ: 0 ANSI: 6
<6>[   40.120334] scsi 6:0:0:0: SSP: handle(0x0009), sas_addr(0x5000c50067b45a75), phy(2), device_name(0x5000c50067b45a74)
<6>[   40.121307] scsi 6:0:0:0: SSP: enclosure_logical_id(0x500605b005c36e40), slot(1)
<6>[   40.141187] scsi 6:0:0:0: qdepth(254), tagged(1), simple(0), ordered(0), scsi_level(7), cmd_que(1)
<5>[   40.153522] scsi 6:0:1:0: Direct-Access     SEAGATE  ST9300653SS      0004 PQ: 0 ANSI: 6
<6>[   40.163213] scsi 6:0:1:0: SSP: handle(0x000a), sas_addr(0x5000c50067bdf9c1), phy(3), device_name(0x5000c50067bdf9c0)
<6>[   40.164187] scsi 6:0:1:0: SSP: enclosure_logical_id(0x500605b005c36e40), slot(0)
<6>[   40.184055] scsi 6:0:1:0: qdepth(254), tagged(1), simple(0), ordered(0), scsi_level(7), cmd_que(1)
<5>[   40.197240] scsi 4:0:0:0: CD-ROM            TEAC     DV-W28S-W        1.0A PQ: 0 ANSI: 5
<4>[   40.245498] sr0: scsi3-mmc drive: 24x/24x writer dvd-ram cd/rw xa/form2 cdda tray
<6>[   40.254414] cdrom: Uniform CD-ROM driver Revision: 3.20
<7>[   40.261303] sr 4:0:0:0: Attached scsi CD-ROM sr0
<5>[   40.267295] sd 6:1:0:0: [sda] 1167966208 512-byte logical blocks: (597 GB/556 GiB)
<5>[   40.276349] sd 6:1:0:0: [sda] 4096-byte physical blocks
<5>[   40.282810] sd 6:1:0:0: [sda] Write Protect is off
<7>[   40.288646] sd 6:1:0:0: [sda] Mode Sense: 03 00 00 08
<3>[   40.294722] sd 6:1:0:0: [sda] No Caching mode page found
<3>[   40.301040] sd 6:1:0:0: [sda] Assuming drive cache: write through
<5>[   40.301450] sd 6:1:0:0: Attached scsi generic sg0 type 0
<5>[   40.301665] scsi 6:0:0:0: Attached scsi generic sg1 type 0
<5>[   40.301820] scsi 6:0:1:0: Attached scsi generic sg2 type 0
<5>[   40.301974] sr 4:0:0:0: Attached scsi generic sg3 type 5
<3>[   40.334030] sd 6:1:0:0: [sda] No Caching mode page found
<3>[   40.340268] sd 6:1:0:0: [sda] Assuming drive cache: write through
<6>[   40.355146]  sda: sda1 sda2 sda3
<3>[   40.360105] sd 6:1:0:0: [sda] No Caching mode page found
<3>[   40.366335] sd 6:1:0:0: [sda] Assuming drive cache: write through
<5>[   40.373550] sd 6:1:0:0: [sda] Attached SCSI disk

Thanks,
Ying Huang