Re: [BUG] wifi: rtw88: Hard system freeze on RTL8821CE when power_save is enabled (LPS/ASPM conflict)
From: LB F
Date: Mon Apr 27 2026 - 06:21:26 EST
Hi all,
A quick erratum to my previous email:
I mistakenly wrote that the corrupted descriptor happened to have a
`drv_info_sz` of 24. It actually matched 4 (`PHY_STATUS_SIZE`). Since
`drv_info_sz` is in 8-byte units, this translates to 32 bytes.
The core conclusion remains exactly the same: the hardware randomly
generated a `drv_info_sz` of 4 (or 0) by pure coincidence. This
perfectly bypassed the `pkt_stat->drv_info_sz != PHY_STATUS_SIZE`
check, proving once again that length validation alone isn't
completely bulletproof and Panagiotis's NULL check is still required
as a safety net.
Sorry for the typo!
Best regards,
Oleksandr Havrylov