On Tue, 15 Apr 2025 19:27:50 +0800 Jin Guo <[email protected]> wrote:
> The function ftrace_location is used to lookup the ftrace location with an > ip. However, the result that it returns can be wrong in some case. > > Let's image that we have the following kallsyms: > > ffffffff812c35f0 T sys_ni_syscall > ffffffff812c38b0 W __pfx___x64_sys_io_pgetevents_time32 > ffffffff812c38c0 W __x64_sys_io_pgetevents_time32 Have you tried the latest kernel? because on x86, weak functions that are not used should no longer be in the ftrace table. That is, you should never see __ftrace_invalid_addres_* anymore. See https://lore.kernel.org/all/[email protected]/ That was just added this merge window, which would make your patch obsolete. -- Steve
