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| author | Quentin Monnet <[email protected]> | 2018-11-08 11:52:25 +0000 |
|---|---|---|
| committer | Daniel Borkmann <[email protected]> | 2018-11-09 07:20:52 +0000 |
| commit | 53909030aa29bffe1f8490df62176c2375135652 (patch) | |
| tree | 8f36333c5fb18e5feb333c4de48be0e5b7c53bb2 /tools/bpf/bpftool/prog.c | |
| parent | tools/bpftool: copy a few net uapi headers to tools directory (diff) | |
| download | kernel-53909030aa29bffe1f8490df62176c2375135652.tar.gz kernel-53909030aa29bffe1f8490df62176c2375135652.zip | |
tools: bpftool: prevent infinite loop in get_fdinfo()
Function getline() returns -1 on failure to read a line, thus creating
an infinite loop in get_fdinfo() if the key is not found. Fix it by
calling the function only as long as we get a strictly positive return
value.
Found by copying the code for a key which is not always present...
Fixes: 71bb428fe2c1 ("tools: bpf: add bpftool")
Signed-off-by: Quentin Monnet <[email protected]>
Reviewed-by: Jakub Kicinski <[email protected]>
Signed-off-by: Daniel Borkmann <[email protected]>
Diffstat (limited to 'tools/bpf/bpftool/prog.c')
0 files changed, 0 insertions, 0 deletions