Messages in this thread | | | Date | Tue, 22 Apr 2008 15:51:47 -0400 | From | Masami Hiramatsu <> | Subject | Re: [Bug 10489] Kprobe smoke test lockdep warning |
| |
Masami Hiramatsu wrote: > processor's IF bit is changed when an iret(q) is issued. > In other words, when returning from a debug/int3 exception.
By the way, when returning from an exception on x86-64, it seems paranoidexit@entry_64.S doesn't use TRACE_IRQS_IRETQ except for it executes swapgs, does it?
If not, I guess the lockdep on x86-64 may causes an warning by below code:
spin_lock(...) kprobe_target_function() spin_unlock(...)
Thanks,
-- Masami Hiramatsu
Software Engineer Hitachi Computer Products (America) Inc. Software Solutions Division
e-mail: mhiramat@redhat.com
| |