On Tue, 30 Mar 2021 19:47:27 +0800, Jason Yan wrote:
> When the scsi device status is offline, mode sense command will return a
> result with only DID_NO_CONNECT set. Then in sd_read_write_protect_flag(),
> only status byte of the result is checked, we still consider the command
> returned good, and read sdkp->write_prot from the buffer. And because of
> bug [1], garbage data is copied to the buffer, the disk sometimes
> be set readonly. When the scsi device is set running again, users cannot
> write data to the disk.
>
> [...]
Applied to 5.14/scsi-queue, thanks!
[1/1] scsi: consider status is not good for offline devices
https://git.kernel.org/mkp/scsi/c/1ee275342234
--
Martin K. Petersen Oracle Linux Engineering
