From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, Jamie Iles <quic_jiles@quicinc.com>,
Mika Westerberg <mika.westerberg@linux.intel.com>,
Wolfram Sang <wsa@kernel.org>, Sasha Levin <sashal@kernel.org>
Subject: [PATCH 4.19 26/28] i2c: acpi: fix resource leak in reconfiguration device addition
Date: Mon, 11 Oct 2021 15:47:16 +0200 [thread overview]
Message-ID: <20211011134641.559770745@linuxfoundation.org> (raw)
In-Reply-To: <20211011134640.711218469@linuxfoundation.org>
From: Jamie Iles <quic_jiles@quicinc.com>
[ Upstream commit 6558b646ce1c2a872fe1c2c7cb116f05a2c1950f ]
acpi_i2c_find_adapter_by_handle() calls bus_find_device() which takes a
reference on the adapter which is never released which will result in a
reference count leak and render the adapter unremovable. Make sure to
put the adapter after creating the client in the same manner that we do
for OF.
Fixes: 525e6fabeae2 ("i2c / ACPI: add support for ACPI reconfigure notifications")
Signed-off-by: Jamie Iles <quic_jiles@quicinc.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
[wsa: fixed title]
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/i2c/i2c-core-acpi.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/i2c/i2c-core-acpi.c b/drivers/i2c/i2c-core-acpi.c
index 8ba4122fb340..8288cfb44cb2 100644
--- a/drivers/i2c/i2c-core-acpi.c
+++ b/drivers/i2c/i2c-core-acpi.c
@@ -395,6 +395,7 @@ static int i2c_acpi_notify(struct notifier_block *nb, unsigned long value,
break;
i2c_acpi_register_device(adapter, adev, &info);
+ put_device(&adapter->dev);
break;
case ACPI_RECONFIG_DEVICE_REMOVE:
if (!acpi_device_enumerated(adev))
--
2.33.0
next prev parent reply other threads:[~2021-10-11 14:15 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-11 13:46 [PATCH 4.19 00/28] 4.19.211-rc1 review Greg Kroah-Hartman
2021-10-11 13:46 ` [PATCH 4.19 01/28] Partially revert "usb: Kconfig: using select for USB_COMMON dependency" Greg Kroah-Hartman
2021-10-11 13:46 ` [PATCH 4.19 02/28] USB: cdc-acm: fix racy tty buffer accesses Greg Kroah-Hartman
2021-10-11 13:46 ` [PATCH 4.19 03/28] USB: cdc-acm: fix break reporting Greg Kroah-Hartman
2021-10-11 13:46 ` [PATCH 4.19 04/28] xen/privcmd: fix error handling in mmap-resource processing Greg Kroah-Hartman
2021-10-11 13:46 ` [PATCH 4.19 05/28] ovl: fix missing negative dentry check in ovl_rename() Greg Kroah-Hartman
2021-10-11 13:46 ` [PATCH 4.19 06/28] nfsd4: Handle the NFSv4 READDIR dircount hint being zero Greg Kroah-Hartman
2021-10-11 13:46 ` [PATCH 4.19 07/28] xen/balloon: fix cancelled balloon action Greg Kroah-Hartman
2021-10-11 13:46 ` [PATCH 4.19 08/28] ARM: dts: omap3430-sdp: Fix NAND device node Greg Kroah-Hartman
2021-10-11 13:46 ` [PATCH 4.19 09/28] ARM: dts: qcom: apq8064: use compatible which contains chipid Greg Kroah-Hartman
2021-10-11 13:47 ` [PATCH 4.19 10/28] bpf, mips: Validate conditional branch offsets Greg Kroah-Hartman
2021-10-11 13:47 ` [PATCH 4.19 11/28] xtensa: call irqchip_init only when CONFIG_USE_OF is selected Greg Kroah-Hartman
2021-10-11 13:47 ` [PATCH 4.19 12/28] bpf, arm: Fix register clobbering in div/mod implementation Greg Kroah-Hartman
2021-10-11 13:47 ` [PATCH 4.19 13/28] bpf: Fix integer overflow in prealloc_elems_and_freelist() Greg Kroah-Hartman
2021-10-11 13:47 ` [PATCH 4.19 14/28] phy: mdio: fix memory leak Greg Kroah-Hartman
2021-10-11 13:47 ` [PATCH 4.19 15/28] net_sched: fix NULL deref in fifo_set_limit() Greg Kroah-Hartman
2021-10-11 13:47 ` [PATCH 4.19 16/28] powerpc/fsl/dts: Fix phy-connection-type for fm1mac3 Greg Kroah-Hartman
2021-10-11 13:47 ` [PATCH 4.19 17/28] ptp_pch: Load module automatically if ID matches Greg Kroah-Hartman
2021-10-11 13:47 ` [PATCH 4.19 18/28] ARM: imx6: disable the GIC CPU interface before calling stby-poweroff sequence Greg Kroah-Hartman
2021-10-11 13:47 ` [PATCH 4.19 19/28] net: bridge: use nla_total_size_64bit() in br_get_linkxstats_size() Greg Kroah-Hartman
2021-10-11 13:47 ` [PATCH 4.19 20/28] net: sfp: Fix typo in state machine debug string Greg Kroah-Hartman
2021-10-11 13:47 ` [PATCH 4.19 21/28] netlink: annotate data races around nlk->bound Greg Kroah-Hartman
2021-10-11 13:47 ` [PATCH 4.19 22/28] drm/nouveau/debugfs: fix file release memory leak Greg Kroah-Hartman
2021-10-11 13:47 ` [PATCH 4.19 23/28] rtnetlink: fix if_nlmsg_stats_size() under estimation Greg Kroah-Hartman
2021-10-11 13:47 ` [PATCH 4.19 24/28] i40e: fix endless loop under rtnl Greg Kroah-Hartman
2021-10-11 13:47 ` [PATCH 4.19 25/28] i40e: Fix freeing of uninitialized misc IRQ vector Greg Kroah-Hartman
2021-10-11 13:47 ` Greg Kroah-Hartman [this message]
2021-10-11 13:47 ` [PATCH 4.19 27/28] powerpc/bpf: Fix BPF_MOD when imm == 1 Greg Kroah-Hartman
2021-10-11 13:47 ` [PATCH 4.19 28/28] x86/Kconfig: Correct reference to MWINCHIP3D Greg Kroah-Hartman
2021-10-11 16:51 ` [PATCH 4.19 00/28] 4.19.211-rc1 review Pavel Machek
2021-10-11 20:51 ` Guenter Roeck
2021-10-12 1:18 ` Shuah Khan
2021-10-12 1:59 ` Guenter Roeck
2021-10-12 8:13 ` Samuel Zou
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