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authorJakub Kicinski <kuba@kernel.org>2021-07-31 21:23:25 +0300
committerJakub Kicinski <kuba@kernel.org>2021-07-31 21:23:26 +0300
commitd39e8b92c34113e0e406c9853d655b1350a15624 (patch)
tree024fa3db1cea7d90dbc9cdb353fab96d55801f07 /net/unix
parentd2e11fd2b7fcd10b7bcef418c55490c934aa94e8 (diff)
parentab0720ce227cc54a2b841dc3c926ed83a819e4fb (diff)
downloadlinux-d39e8b92c34113e0e406c9853d655b1350a15624.tar.xz
Merge https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
Andrii Nakryiko says: ==================== bpf-next 2021-07-30 We've added 64 non-merge commits during the last 15 day(s) which contain a total of 83 files changed, 5027 insertions(+), 1808 deletions(-). The main changes are: 1) BTF-guided binary data dumping libbpf API, from Alan. 2) Internal factoring out of libbpf CO-RE relocation logic, from Alexei. 3) Ambient BPF run context and cgroup storage cleanup, from Andrii. 4) Few small API additions for libbpf 1.0 effort, from Evgeniy and Hengqi. 5) bpf_program__attach_kprobe_opts() fixes in libbpf, from Jiri. 6) bpf_{get,set}sockopt() support in BPF iterators, from Martin. 7) BPF map pinning improvements in libbpf, from Martynas. 8) Improved module BTF support in libbpf and bpftool, from Quentin. 9) Bpftool cleanups and documentation improvements, from Quentin. 10) Libbpf improvements for supporting CO-RE on old kernels, from Shuyi. 11) Increased maximum cgroup storage size, from Stanislav. 12) Small fixes and improvements to BPF tests and samples, from various folks. * https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (64 commits) tools: bpftool: Complete metrics list in "bpftool prog profile" doc tools: bpftool: Document and add bash completion for -L, -B options selftests/bpf: Update bpftool's consistency script for checking options tools: bpftool: Update and synchronise option list in doc and help msg tools: bpftool: Complete and synchronise attach or map types selftests/bpf: Check consistency between bpftool source, doc, completion tools: bpftool: Slightly ease bash completion updates unix_bpf: Fix a potential deadlock in unix_dgram_bpf_recvmsg() libbpf: Add btf__load_vmlinux_btf/btf__load_module_btf tools: bpftool: Support dumping split BTF by id libbpf: Add split BTF support for btf__load_from_kernel_by_id() tools: Replace btf__get_from_id() with btf__load_from_kernel_by_id() tools: Free BTF objects at various locations libbpf: Rename btf__get_from_id() as btf__load_from_kernel_by_id() libbpf: Rename btf__load() as btf__load_into_kernel() libbpf: Return non-null error on failures in libbpf_find_prog_btf_id() bpf: Emit better log message if bpf_iter ctx arg btf_id == 0 tools/resolve_btfids: Emit warnings and patch zero id for missing symbols bpf: Increase supported cgroup storage value size libbpf: Fix race when pinning maps in parallel ... ==================== Link: https://lore.kernel.org/r/20210730225606.1897330-1-andrii@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/unix')
-rw-r--r--net/unix/unix_bpf.c16
1 files changed, 8 insertions, 8 deletions
diff --git a/net/unix/unix_bpf.c b/net/unix/unix_bpf.c
index db0cda29fb2f..177e883f451e 100644
--- a/net/unix/unix_bpf.c
+++ b/net/unix/unix_bpf.c
@@ -44,7 +44,7 @@ static int unix_dgram_bpf_recvmsg(struct sock *sk, struct msghdr *msg,
{
struct unix_sock *u = unix_sk(sk);
struct sk_psock *psock;
- int copied, ret;
+ int copied;
psock = sk_psock_get(sk);
if (unlikely(!psock))
@@ -53,8 +53,9 @@ static int unix_dgram_bpf_recvmsg(struct sock *sk, struct msghdr *msg,
mutex_lock(&u->iolock);
if (!skb_queue_empty(&sk->sk_receive_queue) &&
sk_psock_queue_empty(psock)) {
- ret = __unix_dgram_recvmsg(sk, msg, len, flags);
- goto out;
+ mutex_unlock(&u->iolock);
+ sk_psock_put(sk, psock);
+ return __unix_dgram_recvmsg(sk, msg, len, flags);
}
msg_bytes_ready:
@@ -68,16 +69,15 @@ msg_bytes_ready:
if (data) {
if (!sk_psock_queue_empty(psock))
goto msg_bytes_ready;
- ret = __unix_dgram_recvmsg(sk, msg, len, flags);
- goto out;
+ mutex_unlock(&u->iolock);
+ sk_psock_put(sk, psock);
+ return __unix_dgram_recvmsg(sk, msg, len, flags);
}
copied = -EAGAIN;
}
- ret = copied;
-out:
mutex_unlock(&u->iolock);
sk_psock_put(sk, psock);
- return ret;
+ return copied;
}
static struct proto *unix_prot_saved __read_mostly;