tools: bpftool: protect against races with disappearing objects

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On program/map show we may get an ID of an object from GETNEXT,
but the object may disappear before we call GET_FD_BY_ID.  If
that happens, ignore the object and continue.

Fixes: 71bb428fe2 ("tools: bpf: add bpftool")
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Acked-by: Quentin Monnet <quentin.monnet@netronome.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

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Jakub Kicinski 2017-12-22 11:36:06 -08:00 • committed by Daniel Borkmann

parent b3b1b65328

commit 8207c6dd47

2 changed files with 4 additions and 0 deletions

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tools/bpf/bpftool/map.c

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2

tools/bpf/bpftool/prog.c

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