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From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Dan Carpenter <dan.carpenter@oracle.com>,
	Daniel Borkmann <daniel@iogearbox.net>,
	Jakub Kicinski <jakub.kicinski@netronome.com>,
	Sasha Levin <sashal@kernel.org>,
	netdev@vger.kernel.org, bpf@vger.kernel.org
Subject: [PATCH AUTOSEL 4.19 603/671] bpf, offload: Unlock on error in bpf_offload_dev_create()
Date: Thu, 16 Jan 2020 12:04:01 -0500
Message-ID: <20200116170509.12787-340-sashal@kernel.org> (raw)
In-Reply-To: <20200116170509.12787-1-sashal@kernel.org>

From: Dan Carpenter <dan.carpenter@oracle.com>

[ Upstream commit d0fbb51dfaa612f960519b798387be436e8f83c5 ]

We need to drop the bpf_devs_lock on error before returning.

Fixes: 9fd7c5559165 ("bpf: offload: aggregate offloads per-device")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Link: https://lore.kernel.org/bpf/20191104091536.GB31509@mwanda
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 kernel/bpf/offload.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/kernel/bpf/offload.c b/kernel/bpf/offload.c
index 177a52436394..86477f3894e5 100644
--- a/kernel/bpf/offload.c
+++ b/kernel/bpf/offload.c
@@ -645,8 +645,10 @@ struct bpf_offload_dev *bpf_offload_dev_create(void)
 	down_write(&bpf_devs_lock);
 	if (!offdevs_inited) {
 		err = rhashtable_init(&offdevs, &offdevs_params);
-		if (err)
+		if (err) {
+			up_write(&bpf_devs_lock);
 			return ERR_PTR(err);
+		}
 		offdevs_inited = true;
 	}
 	up_write(&bpf_devs_lock);
-- 
2.20.1


  parent reply index

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20200116170509.12787-1-sashal@kernel.org>
2020-01-16 16:58 ` [PATCH AUTOSEL 4.19 280/671] bpf: Add missed newline in verifier verbose log Sasha Levin
2020-01-16 16:59 ` [PATCH AUTOSEL 4.19 353/671] nfp: bpf: fix static check error through tightening shift amount adjustment Sasha Levin
2020-01-16 17:00 ` [PATCH AUTOSEL 4.19 383/671] signal/bpfilter: Fix bpfilter_kernl to use send_sig not force_sig Sasha Levin
2020-01-16 17:00 ` [PATCH AUTOSEL 4.19 390/671] net: core: support XDP generic on stacked devices Sasha Levin
2020-01-16 17:00 ` [PATCH AUTOSEL 4.19 417/671] bpf: fix the check that forwarding is enabled in bpf_ipv6_fib_lookup Sasha Levin
2020-01-16 17:01 ` [PATCH AUTOSEL 4.19 437/671] tools: bpftool: use correct argument in cgroup errors Sasha Levin
2020-01-16 17:01 ` [PATCH AUTOSEL 4.19 461/671] xdp: fix possible cq entry leak Sasha Levin
2020-01-16 17:02 ` [PATCH AUTOSEL 4.19 483/671] net: fix bpf_xdp_adjust_head regression for generic-XDP Sasha Levin
2020-01-16 17:02 ` [PATCH AUTOSEL 4.19 494/671] tools: bpftool: fix arguments for p_err() in do_event_pipe() Sasha Levin
2020-01-16 17:02 ` [PATCH AUTOSEL 4.19 495/671] tools: bpftool: fix format strings and arguments for jsonw_printf() Sasha Levin
2020-01-16 17:02 ` [PATCH AUTOSEL 4.19 529/671] xsk: avoid store-tearing when assigning queues Sasha Levin
2020-01-16 17:02 ` [PATCH AUTOSEL 4.19 530/671] xsk: avoid store-tearing when assigning umem Sasha Levin
2020-01-16 17:03 ` [PATCH AUTOSEL 4.19 558/671] bpf: fix BTF limits Sasha Levin
2020-01-16 17:04 ` [PATCH AUTOSEL 4.19 602/671] xsk: Fix registration of Rx-only sockets Sasha Levin
2020-01-16 17:04 ` Sasha Levin [this message]
2020-01-16 17:05 ` [PATCH AUTOSEL 4.19 666/671] samples/bpf: Fix broken xdp_rxq_info due to map order assumptions Sasha Levin

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