Re: bug in dumping server name in tracepoints

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merged into cifs-2.6.git for-next and cc:stable v5.12

On Fri, May 21, 2021 at 1:37 PM Steve French <smfrench@xxxxxxxxx> wrote:
>
> On Fri, May 21, 2021 at 2:52 AM Shyam Prasad N <nspmangalore@xxxxxxxxx> wrote:
> >
> > Can you please verify with this patch?
> >
> > We missed using the variable length string macros in several
> > tracepoints. Fixed them in this change.
> >
> > There's probably more useful macros that we can use to print
> > others like flags etc. But I'll submit seperate patches for
> > those at a future date.
> >
> > https://github.com/sprasad-microsoft/smb-kernel-client/commit/ce6399dd4f13cacc4ffdc41e07cde5cc88175f71.patch
> > https://github.com/sprasad-microsoft/smb-kernel-client/pull/2
> >
> > Regards,
> > Shyam
>
> Yes - it works now
>
> # trace-cmd show
> # tracer: nop
> #
> # entries-in-buffer/entries-written: 1/1   #P:12
> #
> #                                _-----=> irqs-off
> #                               / _----=> need-resched
> #                              | / _---=> hardirq/softirq
> #                              || / _--=> preempt-depth
> #                              ||| /     delay
> #           TASK-PID     CPU#  ||||   TIMESTAMP  FUNCTION
> #              | |         |   ||||      |         |
>            cifsd-226090  [000] .... 386914.150292: smb3_reconnect:
> conn_id=0x1 server=localhost current_mid=26
>
>
> > On Thu, May 20, 2021 at 11:41 PM Steve French <smfrench@xxxxxxxxx> wrote:
> > >
> > > Looks like we have a bug in how we dump server name in some
> > > tracepoints e.g. see below:
> > >
> > > smfrench@smfrench-ThinkPad-P52:~/cifs-2.6$ sudo trace-cmd show
> > > # tracer: nop
> > > #
> > > # entries-in-buffer/entries-written: 1/1   #P:12
> > > #
> > > #                                _-----=> irqs-off
> > > #                               / _----=> need-resched
> > > #                              | / _---=> hardirq/softirq
> > > #                              || / _--=> preempt-depth
> > > #                              ||| /     delay
> > > #           TASK-PID     CPU#  ||||   TIMESTAMP  FUNCTION
> > > #              | |         |   ||||      |         |
> > >            cifsd-82671   [006] .... 298870.051187: smb3_reconnect:
> > > conn_id=0x2 server=(0xffff950d5f6f6c00:localhost)[UNSAFE-MEMORY]
> > > current_mid=3105
> > >
> > >
> > > --
> > > Thanks,
> > >
> > > Steve
> >
> >
> >
> > --
> > Regards,
> > Shyam
>
>
>
> --
> Thanks,
>
> Steve



-- 
Thanks,

Steve



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