diff options
| author | Leon Hwang <hffilwlqm@gmail.com> | 2023-09-17 18:38:46 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-10-10 22:53:37 +0300 |
| commit | 93dd471d3a2f37fbd2c5f5fef61cd8b7c8eec027 (patch) | |
| tree | 8e1caee373b09c8d01044415a000b4a6531e5a97 /include/linux/bpf.h | |
| parent | 10a18c8bac7f60d32b7af22da03b66f350beee38 (diff) | |
| download | linux-93dd471d3a2f37fbd2c5f5fef61cd8b7c8eec027.tar.xz | |
bpf: Fix tr dereferencing
[ Upstream commit b724a6418f1f853bcb39c8923bf14a50c7bdbd07 ]
Fix 'tr' dereferencing bug when CONFIG_BPF_JIT is turned off.
When CONFIG_BPF_JIT is turned off, 'bpf_trampoline_get()' returns NULL,
which is same as the cases when CONFIG_BPF_JIT is turned on.
Closes: https://lore.kernel.org/r/202309131936.5Nc8eUD0-lkp@intel.com/
Fixes: f7b12b6fea00 ("bpf: verifier: refactor check_attach_btf_id()")
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Leon Hwang <hffilwlqm@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20230917153846.88732-1-hffilwlqm@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'include/linux/bpf.h')
| -rw-r--r-- | include/linux/bpf.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/bpf.h b/include/linux/bpf.h index b010d45a1ecd..8f4379e93ad4 100644 --- a/include/linux/bpf.h +++ b/include/linux/bpf.h @@ -725,7 +725,7 @@ static inline int bpf_trampoline_unlink_prog(struct bpf_prog *prog, static inline struct bpf_trampoline *bpf_trampoline_get(u64 key, struct bpf_attach_target_info *tgt_info) { - return ERR_PTR(-EOPNOTSUPP); + return NULL; } static inline void bpf_trampoline_put(struct bpf_trampoline *tr) {} #define DEFINE_BPF_DISPATCHER(name) |