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authorKumar Kartikeya Dwivedi <memxor@gmail.com>2022-05-21 16:26:20 +0300
committerDaniel Borkmann <daniel@iogearbox.net>2022-05-24 00:16:43 +0300
commit1ec5ee8c8a5a65ea377f8bea64bf4d5b743f6f79 (patch)
tree18eefec3dab4140b090759719590bb325b45272f
parentfe736565efb775620dbcf3c459c1cd80d3e868da (diff)
downloadlinux-1ec5ee8c8a5a65ea377f8bea64bf4d5b743f6f79.tar.xz
bpf: Suppress 'passing zero to PTR_ERR' warning
Kernel Test Robot complains about passing zero to PTR_ERR for the said line, suppress it by using PTR_ERR_OR_ZERO. Fixes: c0a5a21c25f3 ("bpf: Allow storing referenced kptr in map") Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20220521132620.1976921-1-memxor@gmail.com
-rw-r--r--kernel/bpf/verifier.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c
index 14e8c17d3d8d..45153cbc2bd6 100644
--- a/kernel/bpf/verifier.c
+++ b/kernel/bpf/verifier.c
@@ -5352,7 +5352,7 @@ static int process_kptr_func(struct bpf_verifier_env *env, int regno,
return -EINVAL;
}
if (!map_value_has_kptrs(map_ptr)) {
- ret = PTR_ERR(map_ptr->kptr_off_tab);
+ ret = PTR_ERR_OR_ZERO(map_ptr->kptr_off_tab);
if (ret == -E2BIG)
verbose(env, "map '%s' has more than %d kptr\n", map_ptr->name,
BPF_MAP_VALUE_OFF_MAX);