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Introduce a kernel function which is the analogue of dump_stack() printing some useful information and the stack trace. This is not exposed to BPF programs yet, but can be made available in the future. When we have a program counter for a BPF program in the stack trace, also additionally output the filename and line number to make the trace helpful. The rest of the trace can be passed into ./decode_stacktrace.sh to obtain the line numbers for kernel symbols. Reviewed-by: Emil Tsalapatis <emil@etsalapatis.com> Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com> Link: https://lore.kernel.org/r/20250703204818.925464-7-memxor@gmail.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>