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| author | Eduard Zingerman <eddyz87@gmail.com> | 2026-09-04 17:05:56 -0700 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2026-09-04 18:17:30 -0700 |
| commit | 506ada89629ec7059b96ecfb0dc7d33ece0103ca (patch) | |
| tree | 0b07297409b68d2333fb4f0eae7f3b072eb68d4c /tools/perf/util/aslr.h | |
| download | linux-stable-506ada89629ec7059b96ecfb0dc7d33ece0103ca.tar.gz linux-stable-506ada89629ec7059b96ecfb0dc7d33ece0103ca.zip | |
bpf: mark a NULL kfunc argument precisegrafted
check_kfunc_arg() allows bpf_register_is_null() for nullable arguments
w/o marking the underlying scalar register precise. Hence a checkpoint
created on such a path would prune against arbitrary scalar value.
Fixes: 3bda08b63670 ("bpf: Allow NULL buffers in bpf_dynptr_slice(_rw)")
Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20260904-register-is-null-precise-fixes-v1-5-0f5a360ff15d@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'tools/perf/util/aslr.h')
| -rw-r--r-- | tools/perf/util/aslr.h | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/tools/perf/util/aslr.h b/tools/perf/util/aslr.h new file mode 100644 index 000000000..522e31c8e --- /dev/null +++ b/tools/perf/util/aslr.h @@ -0,0 +1,44 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __PERF_ASLR_H +#define __PERF_ASLR_H + +#include <linux/perf_event.h> + +#define ASLR_SUPPORTED_SAMPLE_TYPE ( \ + PERF_SAMPLE_IDENTIFIER | \ + PERF_SAMPLE_IP | \ + PERF_SAMPLE_TID | \ + PERF_SAMPLE_TIME | \ + PERF_SAMPLE_ADDR | \ + PERF_SAMPLE_ID | \ + PERF_SAMPLE_STREAM_ID | \ + PERF_SAMPLE_CPU | \ + PERF_SAMPLE_PERIOD | \ + PERF_SAMPLE_READ | \ + PERF_SAMPLE_CALLCHAIN | \ + PERF_SAMPLE_RAW | \ + PERF_SAMPLE_BRANCH_STACK | \ + PERF_SAMPLE_STACK_USER | \ + PERF_SAMPLE_WEIGHT_TYPE | \ + PERF_SAMPLE_DATA_SRC | \ + PERF_SAMPLE_TRANSACTION | \ + PERF_SAMPLE_PHYS_ADDR | \ + PERF_SAMPLE_CGROUP | \ + PERF_SAMPLE_DATA_PAGE_SIZE | \ + PERF_SAMPLE_CODE_PAGE_SIZE | \ + PERF_SAMPLE_AUX) + +struct perf_tool; +struct evsel; +struct evlist; +union perf_event; + +struct perf_tool *aslr_tool__new(struct perf_tool *delegate); +void aslr_tool__delete(struct perf_tool *tool); + +void aslr_tool__strip_attr_event(union perf_event *event, struct evlist *evlist); +int aslr_tool__cache_orig_attrs(struct perf_tool *tool, struct evsel *evsel); +void aslr_tool__strip_evlist(const struct perf_tool *tool, struct evlist *evlist); +void aslr_tool__restore_evlist(const struct perf_tool *tool, struct evlist *evlist); + +#endif /* __PERF_ASLR_H */ |