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From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Ofir Bitton <obitton@habana.ai>, Oded Gabbay <ogabbay@kernel.org>,
	Sasha Levin <sashal@kernel.org>
Subject: [PATCH AUTOSEL 5.9 11/23] habanalabs: put devices before driver removal
Date: Sat, 12 Dec 2020 11:07:52 -0500	[thread overview]
Message-ID: <20201212160804.2334982-11-sashal@kernel.org> (raw)
In-Reply-To: <20201212160804.2334982-1-sashal@kernel.org>

From: Ofir Bitton <obitton@habana.ai>

[ Upstream commit 5555b7c56bdec7a29c789fec27f84d40f52fbdfa ]

Driver never puts its device and control_device objects, hence
a memory leak is introduced every driver removal.

Signed-off-by: Ofir Bitton <obitton@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/misc/habanalabs/common/device.c | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/drivers/misc/habanalabs/common/device.c b/drivers/misc/habanalabs/common/device.c
index 24b01cce0a384..39fa31d05d9cd 100644
--- a/drivers/misc/habanalabs/common/device.c
+++ b/drivers/misc/habanalabs/common/device.c
@@ -227,16 +227,16 @@ delete_cdev_device:
 
 static void device_cdev_sysfs_del(struct hl_device *hdev)
 {
-	/* device_release() won't be called so must free devices explicitly */
-	if (!hdev->cdev_sysfs_created) {
-		kfree(hdev->dev_ctrl);
-		kfree(hdev->dev);
-		return;
-	}
+	if (!hdev->cdev_sysfs_created)
+		goto put_devices;
 
 	hl_sysfs_fini(hdev);
 	cdev_device_del(&hdev->cdev_ctrl, hdev->dev_ctrl);
 	cdev_device_del(&hdev->cdev, hdev->dev);
+
+put_devices:
+	put_device(hdev->dev);
+	put_device(hdev->dev_ctrl);
 }
 
 /*
@@ -1362,9 +1362,9 @@ sw_fini:
 early_fini:
 	device_early_fini(hdev);
 free_dev_ctrl:
-	kfree(hdev->dev_ctrl);
+	put_device(hdev->dev_ctrl);
 free_dev:
-	kfree(hdev->dev);
+	put_device(hdev->dev);
 out_disabled:
 	hdev->disabled = true;
 	if (add_cdev_sysfs_on_err)
-- 
2.27.0


  parent reply	other threads:[~2020-12-12 16:11 UTC|newest]

Thread overview: 44+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-12 16:07 [PATCH AUTOSEL 5.9 01/23] drm/tegra: sor: Don't warn on probe deferral Sasha Levin
2020-12-12 16:07 ` Sasha Levin
2020-12-12 16:07 ` [PATCH AUTOSEL 5.9 02/23] drm/tegra: sor: Ensure regulators are disabled on teardown Sasha Levin
2020-12-12 16:07   ` Sasha Levin
2020-12-12 16:07 ` [PATCH AUTOSEL 5.9 03/23] drm/tegra: replace idr_init() by idr_init_base() Sasha Levin
2020-12-12 16:07   ` Sasha Levin
2020-12-12 16:07 ` [PATCH AUTOSEL 5.9 04/23] dm integrity: don't use drivers that have CRYPTO_ALG_ALLOCATES_MEMORY Sasha Levin
2020-12-12 16:07   ` [dm-devel] " Sasha Levin
2020-12-12 16:07 ` [PATCH AUTOSEL 5.9 05/23] gfs2: set lockdep subclass for iopen glocks Sasha Levin
2020-12-12 16:07   ` [Cluster-devel] " Sasha Levin
2020-12-12 16:07 ` [PATCH AUTOSEL 5.9 06/23] ASoC: rt5682: change SAR voltage threshold Sasha Levin
2020-12-12 16:07   ` Sasha Levin
2020-12-12 16:07 ` [PATCH AUTOSEL 5.9 07/23] kernel/cpu: add arch override for clear_tasks_mm_cpumask() mm handling Sasha Levin
2020-12-12 16:07 ` [PATCH AUTOSEL 5.9 08/23] drm/tegra: sor: Disable clocks on error in tegra_sor_init() Sasha Levin
2020-12-12 16:07   ` Sasha Levin
2020-12-12 16:07 ` [PATCH AUTOSEL 5.9 09/23] selftests: tc-testing: enable CONFIG_NET_SCH_RED as a module Sasha Levin
2020-12-12 16:07 ` [PATCH AUTOSEL 5.9 10/23] habanalabs: free host huge va_range if not used Sasha Levin
2020-12-12 16:07 ` Sasha Levin [this message]
2020-12-12 16:07 ` [PATCH AUTOSEL 5.9 12/23] arm64: syscall: exit userspace before unmasking exceptions Sasha Levin
2020-12-12 16:07   ` Sasha Levin
2020-12-12 16:07 ` [PATCH AUTOSEL 5.9 13/23] vxlan: Add needed_headroom for lower device Sasha Levin
2020-12-12 16:07 ` [PATCH AUTOSEL 5.9 14/23] vxlan: Copy needed_tailroom from lowerdev Sasha Levin
2020-12-12 16:07 ` [PATCH AUTOSEL 5.9 15/23] scsi: storvsc: Validate length of incoming packet in storvsc_on_channel_callback() Sasha Levin
2020-12-12 16:07   ` Sasha Levin
2020-12-12 18:09   ` Andrea Parri
2020-12-12 18:09     ` Andrea Parri
2020-12-13 14:05     ` Sasha Levin
2020-12-13 14:05       ` Sasha Levin
2020-12-14 11:07     ` Dan Carpenter
2020-12-14 11:07       ` Dan Carpenter
2020-12-14 13:06       ` Konstantin Ryabitsev
2020-12-14 13:06         ` Konstantin Ryabitsev
2020-12-14 18:29         ` Sasha Levin
2020-12-14 18:29           ` Sasha Levin
2020-12-12 16:07 ` [PATCH AUTOSEL 5.9 16/23] scsi: mpt3sas: Increase IOCInit request timeout to 30s Sasha Levin
2020-12-12 16:07 ` [PATCH AUTOSEL 5.9 17/23] dm table: Remove BUG_ON(in_interrupt()) Sasha Levin
2020-12-12 16:07   ` [dm-devel] " Sasha Levin
2020-12-12 16:07 ` [PATCH AUTOSEL 5.9 18/23] iwlwifi: pcie: add one missing entry for AX210 Sasha Levin
2020-12-12 16:08 ` [PATCH AUTOSEL 5.9 19/23] iwlwifi: pcie: add some missing entries " Sasha Levin
2020-12-12 16:08 ` [PATCH AUTOSEL 5.9 20/23] drm/amd/display: Init clock value by current vbios CLKs Sasha Levin
2020-12-12 16:08   ` Sasha Levin
2020-12-12 16:08 ` [PATCH AUTOSEL 5.9 21/23] perf/x86/intel: Check PEBS status correctly Sasha Levin
2020-12-12 16:08 ` [PATCH AUTOSEL 5.9 22/23] kbuild: avoid split lines in .mod files Sasha Levin
2020-12-12 16:08 ` [PATCH AUTOSEL 5.9 23/23] tools/testing/selftests/vm: fix build error Sasha Levin

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