In the Linux kernel, the following vulnerability has been resolved:

scsi: hisi sas: Add slave destroy interface for v3 hw

WARNING is triggered when executing link reset of remote PHY and rmmod SAS driver simultaneously. Following is the WARNING log:

WARNING: CPU: 61 PID: 21818 at drivers/base/core.c:1347 device links no driver+0xb4/0xc0 Call trace: device links no driver+0xb4/0xc0 device links driver cleanup+0xb0/0xfc device release driver+0x198/0x23c device release driver+0x38/0x50 bus remove device+0x130/0x140 device del+0x184/0x434 scsi remove device+0x118/0x150 scsi remove target+0x1bc/0x240 sas rphy remove+0x90/0x94 sas rphy delete+0x24/0x3c sas destruct devices+0x64/0xa0 [libsas] sas revalidate domain+0xe4/0x150 [libsas] process one work+0x1e0/0x46c worker thread+0x15c/0x464 kthread+0x160/0x170 ret from fork+0x10/0x20 ---[ end trace 71e059eb58f85d4a ]---

During SAS phy up, link->status is set to DL STATE AVAILABLE in device links driver bound, then this setting influences device links no driver() before driver rmmod and caused WARNING.

Add the slave destroy interface to make sure link is removed after flush workque.