Re: [PATCH v2 1/2] scsi: ufs: core: Remove unnecessary if statement

From: Bart Van Assche
Date: Fri Oct 14 2022 - 16:45:55 EST


On 10/14/22 13:30, Bean Huo wrote:
I double-checked the changelog and the stack overflow issue was double
fixed by your commit:

commit d3d9c4570285 ("scsi: ufs: Fix memory corruption by
ufshcd_read_desc_param()"),

For example, if the user wants to read wb_buf_alloc_units in the RPMB
unit descriptor,

parameter offset = 41, parameter size = 4,
buff_len = 45;

After ufshcd_query_descriptor_retry(), buff_len will be updated to 35.

param_offset > buff_len, then -EINVAL will be returned.

So we can safely remove this check, and if you still have concerns, I
can verify when I get back to the office.

Hi Bean,

Thank you for having looked this up. I agree with the above.

Bart.