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| author | Eduard Zingerman <eddyz87@gmail.com> | 2026-09-04 01:33:23 -0700 |
|---|---|---|
| committer | Kumar Kartikeya Dwivedi <memxor@gmail.com> | 2026-09-04 12:58:04 +0200 |
| commit | 836b2fe544a5e9b5ce116622cb36fba33838c6fd (patch) | |
| tree | 95e38e4aaa0a6a78e373148b3d0af4aa2ab3d371 /tools/perf/util/stream.h | |
| download | linux-stable-836b2fe544a5e9b5ce116622cb36fba33838c6fd.tar.gz linux-stable-836b2fe544a5e9b5ce116622cb36fba33838c6fd.zip | |
selftests/bpf: Check that JMP32 pointer vs zero jumps are not predictedgrafted
Add jmp32_ptr_vs_zero_jne: the fall-through of the 32-bit compare, which
the verifier used to skip, contains an out of bounds map value access,
hence w/o the previous patch the program is accepted. See previous patch
for detailed description.
Reported-by: Nicholas Carlini <npc@anthropic.com>
Suggested-by: Nicholas Carlini <npc@anthropic.com>
Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/bpf/20260904083325.2083493-6-eddyz87@gmail.com
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Diffstat (limited to 'tools/perf/util/stream.h')
| -rw-r--r-- | tools/perf/util/stream.h | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/tools/perf/util/stream.h b/tools/perf/util/stream.h new file mode 100644 index 000000000..50f7e6e04 --- /dev/null +++ b/tools/perf/util/stream.h @@ -0,0 +1,41 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __PERF_STREAM_H +#define __PERF_STREAM_H + +struct callchain_node; +struct evlist; +struct evsel; + +struct stream { + struct callchain_node *cnode; + struct callchain_node *pair_cnode; +}; + +struct evsel_streams { + struct stream *streams; + const struct evsel *evsel; + int nr_streams_max; + int nr_streams; + u64 streams_hits; +}; + +struct evlist_streams { + struct evsel_streams *ev_streams; + int nr_evsel; +}; + +void evlist_streams__delete(struct evlist_streams *els); + +struct evlist_streams *evlist__create_streams(struct evlist *evlist, + int nr_streams_max); + +struct evsel_streams *evsel_streams__entry(struct evlist_streams *els, + const struct evsel *evsel); + +void evsel_streams__match(struct evsel_streams *es_base, + struct evsel_streams *es_pair); + +void evsel_streams__report(struct evsel_streams *es_base, + struct evsel_streams *es_pair); + +#endif /* __PERF_STREAM_H */ |