Re: [PATCH] scsi: ufs: core: Let the sq_lock protect sq_tail_slot access

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On 12/20/23 06:50, Manivannan Sadhasivam wrote:
On Mon, Dec 18, 2023 at 07:32:17AM -0800, Can Guo wrote:
If access sq_tail_slot without the protection from the sq_lock, race
condition can have multiple SQEs copied to duplicate SQE slot(s), which can
lead to multiple incredible stability issues. Fix it by moving the *dest
initialization, in ufshcd_send_command(), back under protection from the
sq_lock.

Fixes: 3c85f087faec ("scsi: ufs: mcq: Use pointer arithmetic in ufshcd_send_command()")

Cc: stable@xxxxxxxxxxxxxxx

Hmm ... is the "Cc: stable" tag really required if a "Fixes:" tag is present?

Bart.





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