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From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	stable@vger.kernel.org, Takashi Iwai <tiwai@suse.de>,
	"David S. Miller" <davem@davemloft.net>,
	Sasha Levin <sashal@kernel.org>
Subject: [PATCH 5.10 09/30] r8152: Fix potential PM refcount imbalance
Date: Fri,  6 Aug 2021 10:16:47 +0200	[thread overview]
Message-ID: <20210806081113.445195051@linuxfoundation.org> (raw)
In-Reply-To: <20210806081113.126861800@linuxfoundation.org>

From: Takashi Iwai <tiwai@suse.de>

[ Upstream commit 9c23aa51477a37f8b56c3c40192248db0663c196 ]

rtl8152_close() takes the refcount via usb_autopm_get_interface() but
it doesn't release when RTL8152_UNPLUG test hits.  This may lead to
the imbalance of PM refcount.  This patch addresses it.

Link: https://bugzilla.suse.com/show_bug.cgi?id=1186194
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/usb/r8152.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c
index 95e27fb7d2c1..105622e1defa 100644
--- a/drivers/net/usb/r8152.c
+++ b/drivers/net/usb/r8152.c
@@ -5282,9 +5282,10 @@ static int rtl8152_close(struct net_device *netdev)
 		tp->rtl_ops.down(tp);
 
 		mutex_unlock(&tp->control);
+	}
 
+	if (!res)
 		usb_autopm_put_interface(tp->intf);
-	}
 
 	free_all_mem(tp);
 
-- 
2.30.2




  parent reply	other threads:[~2021-08-06  8:22 UTC|newest]

Thread overview: 39+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-06  8:16 [PATCH 5.10 00/30] 5.10.57-rc1 review Greg Kroah-Hartman
2021-08-06  8:16 ` [PATCH 5.10 01/30] drm/i915: Revert "drm/i915/gem: Asynchronous cmdparser" Greg Kroah-Hartman
2021-08-06  8:16 ` [PATCH 5.10 02/30] Revert "drm/i915: Propagate errors on awaiting already signaled fences" Greg Kroah-Hartman
2021-08-06  8:16 ` [PATCH 5.10 03/30] btrfs: fix race causing unnecessary inode logging during link and rename Greg Kroah-Hartman
2021-08-06  8:16 ` [PATCH 5.10 04/30] btrfs: fix lost inode on log replay after mix of fsync, rename and inode eviction Greg Kroah-Hartman
2021-08-06  8:16 ` [PATCH 5.10 05/30] regulator: rtmv20: Fix wrong mask for strobe-polarity-high Greg Kroah-Hartman
2021-08-06  8:16 ` [PATCH 5.10 06/30] regulator: rt5033: Fix n_voltages settings for BUCK and LDO Greg Kroah-Hartman
2021-08-06  8:16 ` [PATCH 5.10 07/30] spi: stm32h7: fix full duplex irq handler handling Greg Kroah-Hartman
2021-08-06  8:16 ` [PATCH 5.10 08/30] ASoC: tlv320aic31xx: fix reversed bclk/wclk master bits Greg Kroah-Hartman
2021-08-06  8:16 ` Greg Kroah-Hartman [this message]
2021-08-06  8:16 ` [PATCH 5.10 10/30] qed: fix possible unpaired spin_{un}lock_bh in _qed_mcp_cmd_and_union() Greg Kroah-Hartman
2021-08-06  8:16 ` [PATCH 5.10 11/30] ASoC: rt5682: Fix the issue of garbled recording after powerd_dbus_suspend Greg Kroah-Hartman
2021-08-06  8:16 ` [PATCH 5.10 12/30] net: Fix zero-copy head len calculation Greg Kroah-Hartman
2021-08-06  8:16 ` [PATCH 5.10 13/30] ASoC: ti: j721e-evm: Fix unbalanced domain activity tracking during startup Greg Kroah-Hartman
2021-08-06  8:16 ` [PATCH 5.10 14/30] ASoC: ti: j721e-evm: Check for not initialized parent_clk_id Greg Kroah-Hartman
2021-08-06  8:16 ` [PATCH 5.10 15/30] efi/mokvar: Reserve the table only if it is in boot services data Greg Kroah-Hartman
2021-08-06  8:16 ` [PATCH 5.10 16/30] nvme: fix nvme_setup_command metadata trace event Greg Kroah-Hartman
2021-08-06  8:16 ` [PATCH 5.10 17/30] drm/amd/display: Fix comparison error in dcn21 DML Greg Kroah-Hartman
2021-08-06  8:16 ` [PATCH 5.10 18/30] drm/amd/display: Fix max vstartup calculation for modes with borders Greg Kroah-Hartman
2021-08-06  8:16 ` [PATCH 5.10 19/30] ACPI: fix NULL pointer dereference Greg Kroah-Hartman
2021-08-06  8:16 ` [PATCH 5.10 20/30] Revert "spi: mediatek: fix fifo rx mode" Greg Kroah-Hartman
2021-08-06  8:16 ` [PATCH 5.10 21/30] Revert "Bluetooth: Shutdown controller after workqueues are flushed or cancelled" Greg Kroah-Hartman
2021-08-06  8:17 ` [PATCH 5.10 22/30] firmware: arm_scmi: Ensure drivers provide a probe function Greg Kroah-Hartman
2021-08-06  8:17 ` [PATCH 5.10 23/30] firmware: arm_scmi: Add delayed response status check Greg Kroah-Hartman
2021-08-06  8:17 ` [PATCH 5.10 24/30] Revert "watchdog: iTCO_wdt: Account for rebooting on second timeout" Greg Kroah-Hartman
2021-08-06  8:17 ` [PATCH 5.10 25/30] selftests/bpf: Add a test for ptr_to_map_value on stack for helper access Greg Kroah-Hartman
2021-08-06  8:17 ` [PATCH 5.10 26/30] selftest/bpf: Adjust expected verifier errors Greg Kroah-Hartman
2021-08-06  8:17 ` [PATCH 5.10 27/30] bpf, selftests: Adjust few selftest result_unpriv outcomes Greg Kroah-Hartman
2021-08-06  8:17 ` [PATCH 5.10 28/30] bpf: Update selftests to reflect new error states Greg Kroah-Hartman
2021-08-06  8:17 ` [PATCH 5.10 29/30] bpf, selftests: Adjust few selftest outcomes wrt unreachable code Greg Kroah-Hartman
2021-08-06  8:17 ` [PATCH 5.10 30/30] selftest/bpf: Verifier tests for var-off access Greg Kroah-Hartman
2021-08-06 12:59 ` [PATCH 5.10 00/30] 5.10.57-rc1 review Fox Chen
2021-08-06 13:26 ` Pavel Machek
2021-08-06 14:33 ` Jon Hunter
2021-08-06 18:59 ` Guenter Roeck
2021-08-07  6:42 ` Rudi Heitbaum
2021-08-07 10:39 ` Sudip Mukherjee
2021-08-07 18:33 ` Naresh Kamboju
2021-08-07 19:51 ` Aakash Hemadri

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