Commit 1ec5ee8c authored by Kumar Kartikeya Dwivedi's avatar Kumar Kartikeya Dwivedi Committed by Daniel Borkmann
Browse files

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: c0a5a21c ("bpf: Allow storing referenced kptr in map")
Reported-by: default avatarkernel test robot <lkp@intel.com>
Signed-off-by: default avatarKumar Kartikeya Dwivedi <memxor@gmail.com>
Signed-off-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20220521132620.1976921-1-memxor@gmail.com
parent fe736565

kernel/bpf/verifier.c

+1 −1
Original line number Diff line number Diff line
@@ -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);