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Revert "af_unix: Remove put_pid()/put_cred() in copy_peercred()."

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This reverts commit 7d62680ff2.
This commit is contained in:
Ksawlii 2024-11-24 00:23:43 +01:00
parent 7af2ee528f
commit 0868060b93
1 changed files with 8 additions and 1 deletions
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9
net/unix/af_unix.c
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@ -603,6 +603,9 @@ static void init_peercred(struct sock *sk)
static void copy_peercred(struct sock *sk, struct sock *peersk) static void copy_peercred(struct sock *sk, struct sock *peersk)
{ {
const struct cred *old_cred;
struct pid *old_pid;
if (sk < peersk) { if (sk < peersk) {
spin_lock(&sk->sk_peer_lock); spin_lock(&sk->sk_peer_lock);
spin_lock_nested(&peersk->sk_peer_lock, SINGLE_DEPTH_NESTING); spin_lock_nested(&peersk->sk_peer_lock, SINGLE_DEPTH_NESTING);
@ -610,12 +613,16 @@ static void copy_peercred(struct sock *sk, struct sock *peersk)
spin_lock(&peersk->sk_peer_lock); spin_lock(&peersk->sk_peer_lock);
spin_lock_nested(&sk->sk_peer_lock, SINGLE_DEPTH_NESTING); spin_lock_nested(&sk->sk_peer_lock, SINGLE_DEPTH_NESTING);
} }
old_pid = sk->sk_peer_pid;
old_cred = sk->sk_peer_cred;
sk->sk_peer_pid = get_pid(peersk->sk_peer_pid); sk->sk_peer_pid = get_pid(peersk->sk_peer_pid);
sk->sk_peer_cred = get_cred(peersk->sk_peer_cred); sk->sk_peer_cred = get_cred(peersk->sk_peer_cred);
spin_unlock(&sk->sk_peer_lock); spin_unlock(&sk->sk_peer_lock);
spin_unlock(&peersk->sk_peer_lock); spin_unlock(&peersk->sk_peer_lock);
put_pid(old_pid);
put_cred(old_cred);
} }
static int unix_listen(struct socket *sock, int backlog) static int unix_listen(struct socket *sock, int backlog)