From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Yu Kuai <yukuai3@huawei.com>, Hulk Robot <hulkci@huawei.com>,
Vinod Koul <vkoul@kernel.org>, Sasha Levin <sashal@kernel.org>,
dmaengine@vger.kernel.org, linux-arm-kernel@lists.infradead.org
Subject: [PATCH AUTOSEL 5.10 01/35] dmaengine: zynqmp_dma: Fix PM reference leak in zynqmp_dma_alloc_chan_resourc()
Date: Mon, 21 Jun 2021 13:52:26 -0400 [thread overview]
Message-ID: <20210621175300.735437-1-sashal@kernel.org> (raw)
From: Yu Kuai <yukuai3@huawei.com>
[ Upstream commit 8982d48af36d2562c0f904736b0fc80efc9f2532 ]
pm_runtime_get_sync will increment pm usage counter even it failed.
Forgetting to putting operation will result in reference leak here.
Fix it by replacing it with pm_runtime_resume_and_get to keep usage
counter balanced.
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Link: https://lore.kernel.org/r/20210517081826.1564698-4-yukuai3@huawei.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/dma/xilinx/zynqmp_dma.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/dma/xilinx/zynqmp_dma.c b/drivers/dma/xilinx/zynqmp_dma.c
index d8419565b92c..5fecf5aa6e85 100644
--- a/drivers/dma/xilinx/zynqmp_dma.c
+++ b/drivers/dma/xilinx/zynqmp_dma.c
@@ -468,7 +468,7 @@ static int zynqmp_dma_alloc_chan_resources(struct dma_chan *dchan)
struct zynqmp_dma_desc_sw *desc;
int i, ret;
- ret = pm_runtime_get_sync(chan->dev);
+ ret = pm_runtime_resume_and_get(chan->dev);
if (ret < 0)
return ret;
--
2.30.2
next reply other threads:[~2021-06-21 17:55 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-21 17:52 Sasha Levin [this message]
2021-06-21 17:52 ` [PATCH AUTOSEL 5.10 02/35] dmaengine: stm32-mdma: fix PM reference leak in stm32_mdma_alloc_chan_resourc() Sasha Levin
2021-06-21 17:52 ` [PATCH AUTOSEL 5.10 03/35] dmaengine: xilinx: dpdma: Add missing dependencies to Kconfig Sasha Levin
2021-06-21 17:52 ` [PATCH AUTOSEL 5.10 04/35] dmaengine: xilinx: dpdma: Limit descriptor IDs to 16 bits Sasha Levin
2021-06-21 17:52 ` [PATCH AUTOSEL 5.10 05/35] mac80211: remove warning in ieee80211_get_sband() Sasha Levin
2021-06-21 17:52 ` [PATCH AUTOSEL 5.10 06/35] mac80211_hwsim: drop pending frames on stop Sasha Levin
2021-06-21 17:52 ` [PATCH AUTOSEL 5.10 07/35] cfg80211: call cfg80211_leave_ocb when switching away from OCB Sasha Levin
2021-06-21 17:52 ` [PATCH AUTOSEL 5.10 08/35] dmaengine: rcar-dmac: Fix PM reference leak in rcar_dmac_probe() Sasha Levin
2021-06-21 17:52 ` [PATCH AUTOSEL 5.10 09/35] dmaengine: mediatek: free the proper desc in desc_free handler Sasha Levin
2021-06-21 17:52 ` [PATCH AUTOSEL 5.10 10/35] dmaengine: mediatek: do not issue a new desc if one is still current Sasha Levin
2021-06-21 17:52 ` [PATCH AUTOSEL 5.10 11/35] dmaengine: mediatek: use GFP_NOWAIT instead of GFP_ATOMIC in prep_dma Sasha Levin
2021-06-21 17:52 ` [PATCH AUTOSEL 5.10 12/35] net: ipv4: Remove unneed BUG() function Sasha Levin
2021-06-21 17:52 ` [PATCH AUTOSEL 5.10 13/35] mac80211: drop multicast fragments Sasha Levin
2021-06-21 17:52 ` [PATCH AUTOSEL 5.10 14/35] net: ethtool: clear heap allocations for ethtool function Sasha Levin
2021-06-21 17:52 ` [PATCH AUTOSEL 5.10 15/35] inet: annotate data race in inet_send_prepare() and inet_dgram_connect() Sasha Levin
2021-06-21 17:52 ` [PATCH AUTOSEL 5.10 16/35] ping: Check return value of function 'ping_queue_rcv_skb' Sasha Levin
2021-06-21 17:52 ` [PATCH AUTOSEL 5.10 17/35] net: annotate data race in sock_error() Sasha Levin
2021-06-21 17:52 ` [PATCH AUTOSEL 5.10 18/35] inet: annotate date races around sk->sk_txhash Sasha Levin
2021-06-21 17:52 ` [PATCH AUTOSEL 5.10 19/35] net/packet: annotate data race in packet_sendmsg() Sasha Levin
2021-06-21 17:52 ` [PATCH AUTOSEL 5.10 20/35] net: phy: dp83867: perform soft reset and retain established link Sasha Levin
2021-06-21 17:52 ` [PATCH AUTOSEL 5.10 21/35] riscv32: Use medany C model for modules Sasha Levin
2021-06-21 17:52 ` [PATCH AUTOSEL 5.10 22/35] net: caif: fix memory leak in ldisc_open Sasha Levin
2021-06-21 17:52 ` [PATCH AUTOSEL 5.10 23/35] net/packet: annotate accesses to po->bind Sasha Levin
2021-06-21 17:52 ` [PATCH AUTOSEL 5.10 24/35] net/packet: annotate accesses to po->ifindex Sasha Levin
2021-06-21 17:52 ` [PATCH AUTOSEL 5.10 25/35] r8152: Avoid memcpy() over-reading of ETH_SS_STATS Sasha Levin
2021-06-21 17:52 ` [PATCH AUTOSEL 5.10 26/35] sh_eth: " Sasha Levin
2021-06-21 17:52 ` [PATCH AUTOSEL 5.10 27/35] r8169: " Sasha Levin
2021-06-21 17:52 ` [PATCH AUTOSEL 5.10 28/35] KVM: selftests: Fix kvm_check_cap() assertion Sasha Levin
2021-06-21 17:52 ` [PATCH AUTOSEL 5.10 29/35] net: qed: Fix memcpy() overflow of qed_dcbx_params() Sasha Levin
2021-06-21 17:52 ` [PATCH AUTOSEL 5.10 30/35] mac80211: reset profile_periodicity/ema_ap Sasha Levin
2021-06-21 17:52 ` [PATCH AUTOSEL 5.10 31/35] mac80211: handle various extensible elements correctly Sasha Levin
2021-06-21 17:52 ` [PATCH AUTOSEL 5.10 32/35] recordmcount: Correct st_shndx handling Sasha Levin
2021-06-21 17:52 ` [PATCH AUTOSEL 5.10 33/35] PCI: Add AMD RS690 quirk to enable 64-bit DMA Sasha Levin
2021-06-21 17:52 ` [PATCH AUTOSEL 5.10 34/35] net: ll_temac: Add memory-barriers for TX BD access Sasha Levin
2021-06-21 17:53 ` [PATCH AUTOSEL 5.10 35/35] net: ll_temac: Avoid ndo_start_xmit returning NETDEV_TX_BUSY Sasha Levin
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