bpftool: Skip prog/map that disappears while looking it up by name

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Looking up a prog or map by name walks the whole id space. There is a
window between bpf_prog_get_next_id()/bpf_map_get_next_id() and getting
an fd for that id in which an unrelated object can be freed, and the
lookup then fails with ENOENT and aborts the whole command.

Skip such ids and keep walking, the same way do_show() already does.

Signed-off-by: Jiayuan Chen <jiayuan.chen@linux.dev>
Link: https://lore.kernel.org/bpf/20260720071520.396363-1-jiayuan.chen@linux.dev
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>

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Jiayuan Chen 2026-07-20 15:15:18 +08:00 • committed by Kumar Kartikeya Dwivedi

parent 761214e5c0

commit cfce77b633

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tools/bpf/bpftool/common.c

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