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Subject[PATCH] bpf: put file handler if no storage found
Date
Put file f if inode_storage_ptr() returns NULL.

Fixes: 8ea636848aca ("bpf: Implement bpf_local_storage for inodes")
Acked-by: KP Singh <kpsingh@kernel.org>
Signed-off-by: Pan Bian <bianpan2016@163.com>
---
kernel/bpf/bpf_inode_storage.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/kernel/bpf/bpf_inode_storage.c b/kernel/bpf/bpf_inode_storage.c
index 6edff97ad594..089d5071d4fc 100644
--- a/kernel/bpf/bpf_inode_storage.c
+++ b/kernel/bpf/bpf_inode_storage.c
@@ -125,8 +125,12 @@ static int bpf_fd_inode_storage_update_elem(struct bpf_map *map, void *key,

fd = *(int *)key;
f = fget_raw(fd);
- if (!f || !inode_storage_ptr(f->f_inode))
+ if (!f)
+ return -EBADF;
+ if (!inode_storage_ptr(f->f_inode)) {
+ fput(f);
return -EBADF;
+ }

sdata = bpf_local_storage_update(f->f_inode,
(struct bpf_local_storage_map *)map,
--
2.17.1
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