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| author | Amery Hung <ameryhung@gmail.com> | 2026-07-23 15:18:14 -0700 |
|---|---|---|
| committer | Eduard Zingerman <eddyz87@gmail.com> | 2026-07-23 16:09:07 -0700 |
| commit | 289e680c89ae8a0bb629fa8308313f5c8c6c76a3 (patch) | |
| tree | fec61c0877579c40642732193780ef8b9556ca97 /tools/perf/scripts/python/stackcollapse.py | |
| parent | 94515f3a7d4256a5062176b7d6ed0471938cd51a (diff) | |
bpf: Reject passing scalar NULL to nonnull arg of a global subprog
A global subprogram argument tagged __arg_nonnull is set up as a
non-nullable PTR_TO_MEM. However the verifier does not check against a
scalar NULL, leading to real NULL pointer dereference. Reject it as
well.
Fixes: 94e1c70a3452 ("bpf: support 'arg:xxx' btf_decl_tag-based hints for global subprog args")
Signed-off-by: Amery Hung <ameryhung@gmail.com>
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://patch.msgid.link/20260723221815.367797-1-ameryhung@gmail.com
Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
0 files changed, 0 insertions, 0 deletions