Module Name: src
Committed By: jmcneill
Date: Mon Feb 5 23:07:42 UTC 2024
Modified Files:
src/sys/dev/usb: ehcireg.h
Log Message:
Ensure proper alignment/padding of EHCI hardware descriptors.
These descriptor structs are embedded in structs that contain additional
context for software. With a non cache coherent device and non-padded
descriptors, the device may issue a read/modify/write past the end of
the descriptor, clobbering software state in the process. This was the
root cause of multiple crashes on evbppc with a non cache coherent EHCI.
To generate a diff of this commit:
cvs rdiff -u -r1.37 -r1.38 src/sys/dev/usb/ehcireg.h
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
