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| author | Leon Hwang <leon.hwang@linux.dev> | 2026-05-12 18:31:55 +0300 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2026-05-12 22:44:44 +0300 |
| commit | 49f9b2b2a18c5ce06b21fc2b3399352d80dee0c6 (patch) | |
| tree | 5ffdf2578232e9bb355da027f6b8a2527dc9492c /include/linux | |
| parent | ceeb7eda94a3548958b30818495ef7eb12898727 (diff) | |
| download | linux-49f9b2b2a18c5ce06b21fc2b3399352d80dee0c6.tar.xz | |
bpf: Add syscall common attributes support for map_create
Many BPF_MAP_CREATE validation failures currently return -EINVAL without
any explanation to userspace.
Plumb common syscall log attributes into map_create(), create a verifier
log from bpf_common_attr::log_buf/log_size/log_level, and report
map-creation failure reasons through that buffer.
This improves debuggability by allowing userspace to inspect why map
creation failed and read back log_true_size from common attributes.
Signed-off-by: Leon Hwang <leon.hwang@linux.dev>
Link: https://lore.kernel.org/r/20260512153157.28382-7-leon.hwang@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/bpf_verifier.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/bpf_verifier.h b/include/linux/bpf_verifier.h index 8433430dedb7..c15a4c26a43b 100644 --- a/include/linux/bpf_verifier.h +++ b/include/linux/bpf_verifier.h @@ -766,6 +766,9 @@ struct bpf_log_attr { int bpf_log_attr_init(struct bpf_log_attr *log, u64 log_buf, u32 log_size, u32 log_level, u32 offsetof_log_true_size, bpfptr_t uattr, struct bpf_common_attr *common, bpfptr_t uattr_common, u32 size_common); +struct bpf_verifier_log *bpf_log_attr_create_vlog(struct bpf_log_attr *attr_log, + struct bpf_common_attr *common, bpfptr_t uattr, + u32 size); int bpf_log_attr_finalize(struct bpf_log_attr *attr, struct bpf_verifier_log *log); #define BPF_MAX_SUBPROGS 256 |