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| author | Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2024-07-10 16:16:31 +0200 |
|---|---|---|
| committer | Martin KaFai Lau <martin.lau@kernel.org> | 2024-07-10 09:58:52 -0700 |
| commit | c13fda93aca118b8e5cd202e339046728ee7dddb (patch) | |
| tree | e9b50594237f91eac6a7372ed2509b514d7f599d /net/core | |
| parent | 605c96997d89c01c11bbddb4db820ede570581c7 (diff) | |
| download | linux-stable-c13fda93aca118b8e5cd202e339046728ee7dddb.tar.gz linux-stable-c13fda93aca118b8e5cd202e339046728ee7dddb.tar.bz2 linux-stable-c13fda93aca118b8e5cd202e339046728ee7dddb.zip | |
bpf: Remove tst_run from lwt_seg6local_prog_ops.
The syzbot reported that the lwt_seg6 related BPF ops can be invoked
via bpf_test_run() without without entering input_action_end_bpf()
first.
Martin KaFai Lau said that self test for BPF_PROG_TYPE_LWT_SEG6LOCAL
probably didn't work since it was introduced in commit 04d4b274e2a
("ipv6: sr: Add seg6local action End.BPF"). The reason is that the
per-CPU variable seg6_bpf_srh_states::srh is never assigned in the self
test case but each BPF function expects it.
Remove test_run for BPF_PROG_TYPE_LWT_SEG6LOCAL.
Suggested-by: Martin KaFai Lau <martin.lau@linux.dev>
Reported-by: syzbot+608a2acde8c5a101d07d@syzkaller.appspotmail.com
Fixes: d1542d4ae4df ("seg6: Use nested-BH locking for seg6_bpf_srh_states.")
Fixes: 004d4b274e2a ("ipv6: sr: Add seg6local action End.BPF")
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/r/20240710141631.FbmHcQaX@linutronix.de
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Diffstat (limited to 'net/core')
| -rw-r--r-- | net/core/filter.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/net/core/filter.c b/net/core/filter.c index d767880c276d..4cf1d34f7617 100644 --- a/net/core/filter.c +++ b/net/core/filter.c @@ -11053,7 +11053,6 @@ const struct bpf_verifier_ops lwt_seg6local_verifier_ops = { }; const struct bpf_prog_ops lwt_seg6local_prog_ops = { - .test_run = bpf_prog_test_run_skb, }; const struct bpf_verifier_ops cg_sock_verifier_ops = { |