Re: [GIT PULL] probes: Updates for v6.11

[Google]

On Fri, 19 Jul 2024 10:28:24 +1000
Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> wrote:

> Hi Linus,
> 
> On Tue, 16 Jul 2024 23:44:45 +0900 Masami Hiramatsu (Google) <mhiramat@xxxxxxxxxx> wrote:
> >
> > Probes updates for v6.11:
> > 
> > Uprobes:
> > - x86/shstk: Make return uprobe work with shadow stack.
> > - Add uretprobe syscall which speeds up the uretprobe 10-30% faster. This
> >   syscall is automatically used from user-space trampolines which are
> >   generated by the uretprobe. If this syscall is used by normal
> >   user program, it will cause SIGILL. Note that this is currently only
> >   implemented on x86_64.
> >   (This also has 2 fixes for adjusting the syscall number to avoid conflict
> >    with new *attrat syscalls.)
> 
> But another fix that I have been carrying was missed:
> 
> https://lore.kernel.org/lkml/20240717132155.6ca2ce47@xxxxxxxxxxxxxxxx/
> 
> Just the added change to scripts/syscall.tbl (and obviously needs
> adjusting because the *xattrat* syscalss have not been merged yet).

Ah, I missed "script/syscall.tbl". Yes, I need to update it to reserve
the syscall number on it. (But that did not exist on my tree...) I'll send
a fix. BTW should I wait for xattrat series being merged?

Thank you,

-- 
Masami Hiramatsu (Google) <mhiramat@xxxxxxxxxx>