On Tue, Dec 3, 2024 at 9:15 AM Gao Xiang <hsiang...@linux.alibaba.com> wrote: > But I guess you could record more frame addresses to get the caller > of readahead_expand()? e.g. __builtin_return_address(1)?
This turned out to be a big disaster. __builtin_return_address(1) instantly crashes the kernel, causing the whole (production) cluster to go down.
