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| author | Alexei Starovoitov <ast@kernel.org> | 2020-01-21 18:41:38 -0800 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2020-01-22 12:09:02 +0100 |
| commit | f59bbfc2f6099e8655f9e8f585e10ffde17176d0 (patch) | |
| tree | 0e3289384ee6ad1a13499afe74509574be73f27c /tools/lib/bpf/bpf.c | |
| parent | 05d57f1793fb250c85028c9952c3720010baa853 (diff) | |
bpf: Fix error path under memory pressure
Restore the 'if (env->cur_state)' check that was incorrectly removed during
code move. Under memory pressure env->cur_state can be freed and zeroed inside
do_check(). Hence the check is necessary.
Fixes: 51c39bb1d5d1 ("bpf: Introduce function-by-function verification")
Reported-by: syzbot+b296579ba5015704d9fa@syzkaller.appspotmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20200122024138.3385590-1-ast@kernel.org
Diffstat (limited to 'tools/lib/bpf/bpf.c')
0 files changed, 0 insertions, 0 deletions