On Tue, Apr 15, 2025 at 7:45 PM Steven Rostedt <[email protected]> wrote: > > 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.
Hi, Steve you are right, I haven't updated my code in over a month, and the latest kernel works fine. > > -- Steve
