Re: linux-next: runtime warning in next-20220125

[Steven Rostedt]

On Tue, 25 Jan 2022 16:21:46 +1100
Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> wrote:

> Hi all,
> 
> On Tue, 25 Jan 2022 16:05:05 +1100 Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> wrote:
> >
> > My qemu boot test of a powerpc pseries_le_defconfig kernel produces the
> > following trace:
> > 
> > ------------[ cut here ]------------
> > WARNING: CPU: 0 PID: 0 at kernel/trace/trace_events.c:417 trace_event_raw_init+0x194/0x730
> > Modules linked in:
> > CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.17.0-rc1 #2
> > NIP:  c0000000002bdbb4 LR: c0000000002bdcb0 CTR: c0000000002bdb70
> > 
> > I have no idea what has caused this :-(  Maybe commit
> > 
> >   5544d5318802 ("SUNRPC: Same as SVC_RQST_ENDPOINT, but without the xid")  
> 
> Actually, reverting commits
> 
>   6ff851d98af8 ("SUNRPC: Improve sockaddr handling in the svc_xprt_create_error trace point")
>   5544d5318802 ("SUNRPC: Same as SVC_RQST_ENDPOINT, but without the xid")
>   e2d3613db12a ("SUNRPC: Record endpoint information in trace log")
> 
> makes the warning go away.
> 

We added a new way to save items on the ring buffer, but did not update the
safety checks to know about them. I'll fix this shortly.

-- Steve