CVE-2026-99141: In the Linux kernel, the following vulnerability has been resolved: tracing: Fix crash in print_graph_function_event() tracing_set_tracer() assigns the flags

In the Linux kernel, the following vulnerability has been resolved:

tracing: Fix crash in print_graph_function_event()

tracing_set_tracer() assigns the flags of the newly selected tracer
with:

tr->current_trace_flags = t->flags ? : t->tracer->flags;

If the new tracer defines neither static flags nor default flags, like
hwlat, irqsoff or wakeup, add_tracer() has no per instance flags copy
for it, and both operands are NULL, so tr->current_trace_flags ends up
being NULL as well.

The ring buf