Messages in this thread | | | Date | Thu, 8 Apr 2021 17:58:25 +0100 | From | Mark Brown <> | Subject | Re: [RFC PATCH v2 3/4] arm64: Detect FTRACE cases that make the stack trace unreliable |
| |
On Mon, Apr 05, 2021 at 03:43:12PM -0500, madvenka@linux.microsoft.com wrote: > From: "Madhavan T. Venkataraman" <madvenka@linux.microsoft.com> > > When CONFIG_DYNAMIC_FTRACE_WITH_REGS is enabled and tracing is activated > for a function, the ftrace infrastructure is called for the function at > the very beginning. Ftrace creates two frames:
This looks good to me however I'd really like someone who has a firmer understanding of what ftrace is doing to double check as it is entirely likely that I am missing cases here, it seems likely that if I am missing stuff it's extra stuff that needs to be added and we're not actually making use of the reliability information yet. [unhandled content-type:application/pgp-signature] | |