[Intel-gfx] [PATCH] drm/i915/perf: add sentinel to xehp_oa_b_counters

[Andi Shyti]

Hi Andrzej,

On Tue, Jul 11, 2023 at 05:34:10PM +0200, Andrzej Hajda wrote:
> Arrays passed to reg_in_range_table should end with empty record.
> 
> The patch solves KASAN detected bug with signature:
> BUG: KASAN: global-out-of-bounds in xehp_is_valid_b_counter_addr+0x2c7/0x350 [i915]
> Read of size 4 at addr ffffffffa1555d90 by task perf/1518
> 
> CPU: 4 PID: 1518 Comm: perf Tainted: G U 6.4.0-kasan_438-g3303d06107f3+ #1
> Hardware name: Intel Corporation Meteor Lake Client Platform/MTL-P DDR5 SODIMM SBS RVP, BIOS MTLPFWI1.R00.3223.D80.2305311348 05/31/2023
> Call Trace:
> <TASK>
> ...
> xehp_is_valid_b_counter_addr+0x2c7/0x350 [i915]
> 
> Fixes: 0fa9349dda030f ("drm/i915/perf: complete programming whitelisting for XEHPSDV")
> Signed-off-by: Andrzej Hajda <andrzej.hajda at intel.com>

Reviewed-by: Andi Shyti <andi.shyti at linux.intel.com> 

Andi