[$] Finding locking bugs with Smatch

Smatch is a GPL-licensed
static-analysis tool for C that has a lot of specialized checks for the kernel. Smatch
has been used in the kernel for more than 20 years; Dan
Carpenter, its primary author, decided last year that some details of its plugin system
were due for a rewrite. He spoke at Linaro Connect 2025 about his work on
Smatch, the changes to its implementation, and how those changes enabled him to easily
add additional checks for locking bugs in the kernel.