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| author | Tal Lossos <tallossos@gmail.com> | 2021-03-07 15:09:48 +0300 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2021-03-08 18:08:06 +0300 |
| commit | 769c18b254ca191b45047e1fcb3b2ce56fada0b6 (patch) | |
| tree | cb35ce94db582bd6fd717ac4340d08e4ead21168 /kernel | |
| parent | 350a5c4dd2452ea999cc5e1d4a8dbf12de2f97ef (diff) | |
| download | linux-769c18b254ca191b45047e1fcb3b2ce56fada0b6.tar.xz | |
bpf: Change inode_storage's lookup_elem return value from NULL to -EBADF
bpf_fd_inode_storage_lookup_elem() returned NULL when getting a bad FD,
which caused -ENOENT in bpf_map_copy_value. -EBADF error is better than
-ENOENT for a bad FD behaviour.
The patch was partially contributed by CyberArk Software, Inc.
Fixes: 8ea636848aca ("bpf: Implement bpf_local_storage for inodes")
Signed-off-by: Tal Lossos <tallossos@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Yonghong Song <yhs@fb.com>
Acked-by: KP Singh <kpsingh@kernel.org>
Link: https://lore.kernel.org/bpf/20210307120948.61414-1-tallossos@gmail.com
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/bpf/bpf_inode_storage.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/bpf/bpf_inode_storage.c b/kernel/bpf/bpf_inode_storage.c index 6639640523c0..b58b2efb9b43 100644 --- a/kernel/bpf/bpf_inode_storage.c +++ b/kernel/bpf/bpf_inode_storage.c @@ -109,7 +109,7 @@ static void *bpf_fd_inode_storage_lookup_elem(struct bpf_map *map, void *key) fd = *(int *)key; f = fget_raw(fd); if (!f) - return NULL; + return ERR_PTR(-EBADF); sdata = inode_storage_lookup(f->f_inode, map, true); fput(f); |