Kafs 6.16.0-rc3 BUG: kernel NULL pointer dereference

[markus.suvanto at gmail.com]

ti, 2025-07-01 kello 14:12 +0100, David Howells kirjoitti:
> call->server can end up being NULL if we don't recognise the source server.
> The service functions, however, assume that call->server will be set.
> 
> We can try to test this using existing tracepoints.  Can you turn on:
> 
> echo 1 > /sys/kernel/debug/tracing/events/afs/afs_cm_no_server/enable
> echo 1 > /sys/kernel/debug/tracing/events/afs/afs_cm_no_server_u/enable
> echo 1 > /sys/kernel/debug/tracing/events/error_report/enable
> 
> and see if any of these turn up in the trace log?
> 

I recompile the kernel but I don't have path "/sys/kernel/debug/tracing/events"
but I have "/sys/kernel/tracing/events/" so I turn on:

echo 1 > /sys/kernel/tracing/events/afs/afs_cm_no_server/enable
echo 1 > /sys/kernel/tracing/events/afs/afs_cm_no_server_u/enable
echo 1 > /sys/kernel/tracing/events/error_report/enable

But so far I have not manage to reproduce the problem...

-Markus