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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/cgroup.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/cgroup.h')
| -rw-r--r-- | tools/perf/util/cgroup.h | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/tools/perf/util/cgroup.h b/tools/perf/util/cgroup.h new file mode 100644 index 000000000..7b1bda228 --- /dev/null +++ b/tools/perf/util/cgroup.h @@ -0,0 +1,58 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __CGROUP_H__ +#define __CGROUP_H__ + +#include <linux/compiler.h> +#include <linux/refcount.h> +#include <linux/rbtree.h> +#include "util/env.h" + +struct option; + +struct cgroup { + struct rb_node node; + u64 id; + char *name; + int fd; + refcount_t refcnt; +}; + +extern int nr_cgroups; /* number of explicit cgroups defined */ +extern bool cgrp_event_expanded; + +struct cgroup *cgroup__get(struct cgroup *cgroup); +void cgroup__put(struct cgroup *cgroup); + +struct evlist; +struct rblist; + +struct cgroup *cgroup__new(const char *name, bool do_open); +struct cgroup *evlist__findnew_cgroup(struct evlist *evlist, const char *name); +int evlist__expand_cgroup(struct evlist *evlist, const char *cgroups, bool open_cgroup); + +void evlist__set_default_cgroup(struct evlist *evlist, struct cgroup *cgroup); + +int parse_cgroups(const struct option *opt, const char *str, int unset); + +struct cgroup *cgroup__findnew(struct perf_env *env, uint64_t id, + const char *path); +struct cgroup *cgroup__find(struct perf_env *env, uint64_t id); +struct cgroup *__cgroup__find(struct rb_root *root, uint64_t id); + +void perf_env__purge_cgroups(struct perf_env *env); + +#ifdef HAVE_FILE_HANDLE +int read_cgroup_id(struct cgroup *cgrp); +#else +static inline int read_cgroup_id(struct cgroup *cgrp __maybe_unused) +{ + return -1; +} +#endif /* HAVE_FILE_HANDLE */ + +/* read all cgroups in the system and save them in the rbtree */ +void read_all_cgroups(struct rb_root *root); + +int cgroup_is_v2(const char *subsys); + +#endif /* __CGROUP_H__ */ |