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| author | Kumar Kartikeya Dwivedi <memxor@gmail.com> | 2022-03-20 17:30:03 +0300 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2022-03-21 05:21:38 +0300 |
| commit | 7ada3787e91c89b0aa7abf47682e8e587b855c13 (patch) | |
| tree | e85380b9690ec176cbff5a327a1156424250ee71 /tools/perf/scripts/python/syscall-counts.py | |
| parent | e1cc1f39981b06ba22a0c92e800e9fd8ba59d2d3 (diff) | |
| download | linux-7ada3787e91c89b0aa7abf47682e8e587b855c13.tar.xz | |
bpf: Check for NULL return from bpf_get_btf_vmlinux
When CONFIG_DEBUG_INFO_BTF is disabled, bpf_get_btf_vmlinux can return a
NULL pointer. Check for it in btf_get_module_btf to prevent a NULL pointer
dereference.
While kernel test robot only complained about this specific case, let's
also check for NULL in other call sites of bpf_get_btf_vmlinux.
Fixes: 9492450fd287 ("bpf: Always raise reference in btf_get_module_btf")
Reported-by: kernel test robot <oliver.sang@intel.com>
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20220320143003.589540-1-memxor@gmail.com
Diffstat (limited to 'tools/perf/scripts/python/syscall-counts.py')
0 files changed, 0 insertions, 0 deletions