Re: Exception in function_graph tracing

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On 2022-09-13 16:21:27 [-0300], Danilo Cezar Zanella wrote:
> Hi
Hi,

> I'm getting the following error message when I set the current_tracer
> to function_graph. Procedures:
> 
> cd / sys/kernel/tracing
> echo function_graph > current_tracer
> 
> Then I saw the following message in the console.
> 
> Unable to handle kernel paging request at virtual address fffffffc
…
> What is going on?
> Am I doing something wrong?

No, not as far I can tell. It looks like the function_graph tracer is
busted in v4.19 even without the PREEMPT_RT patch. The function tracer
seems to work.

> Thanks
> 
> Danilo

Sebastian




[Index of Archives]     [RT Stable]     [Kernel Newbies]     [IDE]     [Security]     [Git]     [Netfilter]     [Bugtraq]     [Yosemite]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Linux ATA RAID]     [Samba]     [Video 4 Linux]     [Device Mapper]

  Powered by Linux