From: KP Singh <kpsingh@xxxxxxxxxx>
The {inode,sk}_storage_result checking if the correct value was retrieved
was being clobbered unconditionally by the return value of the
bpf_{inode,sk}_storage_delete call.
Fixes: cd324d7abb3d ("bpf: Add selftests for local_storage")
Signed-off-by: KP Singh <kpsingh@xxxxxxxxxx>
---
.../testing/selftests/bpf/progs/local_storage.c | 16 +++++++++++-----
1 file changed, 11 insertions(+), 5 deletions(-)
diff --git a/tools/testing/selftests/bpf/progs/local_storage.c b/tools/testing/selftests/bpf/progs/local_storage.c
index 0758ba229ae0..a3d034eb768e 100644
--- a/tools/testing/selftests/bpf/progs/local_storage.c
+++ b/tools/testing/selftests/bpf/progs/local_storage.c
@@ -58,6 +58,7 @@ int BPF_PROG(unlink_hook, struct inode *dir, struct dentry *victim)
{
__u32 pid = bpf_get_current_pid_tgid() >> 32;
struct dummy_storage *storage;
+ int err;
if (pid != monitored_pid)
return 0;
@@ -67,11 +68,12 @@ int BPF_PROG(unlink_hook, struct inode *dir, struct dentry *victim)
if (!storage)
return 0;
- if (storage->value == DUMMY_STORAGE_VALUE)
+ if (storage->value != DUMMY_STORAGE_VALUE)
inode_storage_result = -1;
- inode_storage_result =
- bpf_inode_storage_delete(&inode_storage_map, victim->d_inode);
+ err = bpf_inode_storage_delete(&inode_storage_map, victim->d_inode);
+ if (!err)
+ inode_storage_result = err;
return 0;
}
@@ -82,6 +84,7 @@ int BPF_PROG(socket_bind, struct socket *sock, struct sockaddr *address,
{
__u32 pid = bpf_get_current_pid_tgid() >> 32;
struct dummy_storage *storage;
+ int err;
if (pid != monitored_pid)
return 0;
@@ -91,10 +94,13 @@ int BPF_PROG(socket_bind, struct socket *sock, struct sockaddr *address,
if (!storage)
return 0;
- if (storage->value == DUMMY_STORAGE_VALUE)
+ if (storage->value != DUMMY_STORAGE_VALUE)
sk_storage_result = -1;
- sk_storage_result = bpf_sk_storage_delete(&sk_storage_map, sock->sk);
+ err = bpf_sk_storage_delete(&sk_storage_map, sock->sk);
+ if (!err)
+ sk_storage_result = err;
+
return 0;
}
--
2.29.0.rc2.309.g374f81d7ae-goog
