From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Liwei Song <liwei.song@windriver.com>,
Alex Deucher <alexander.deucher@amd.com>,
Sasha Levin <sashal@kernel.org>,
christian.koenig@amd.com, Xinhui.Pan@amd.com, airlied@gmail.com,
daniel@ffwll.ch, amd-gfx@lists.freedesktop.org,
dri-devel@lists.freedesktop.org
Subject: [PATCH AUTOSEL 4.19 02/10] drm/radeon: free iio for atombios when driver shutdown
Date: Sun, 26 Feb 2023 21:10:59 -0500 [thread overview]
Message-ID: <20230227021110.1053474-2-sashal@kernel.org> (raw)
In-Reply-To: <20230227021110.1053474-1-sashal@kernel.org>
From: Liwei Song <liwei.song@windriver.com>
[ Upstream commit 4773fadedca918faec443daaca5e4ea1c0ced144 ]
Fix below kmemleak when unload radeon driver:
unreferenced object 0xffff9f8608ede200 (size 512):
comm "systemd-udevd", pid 326, jiffies 4294682822 (age 716.338s)
hex dump (first 32 bytes):
00 00 00 00 c4 aa ec aa 14 ab 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<0000000062fadebe>] kmem_cache_alloc_trace+0x2f1/0x500
[<00000000b6883cea>] atom_parse+0x117/0x230 [radeon]
[<00000000158c23fd>] radeon_atombios_init+0xab/0x170 [radeon]
[<00000000683f672e>] si_init+0x57/0x750 [radeon]
[<00000000566cc31f>] radeon_device_init+0x559/0x9c0 [radeon]
[<0000000046efabb3>] radeon_driver_load_kms+0xc1/0x1a0 [radeon]
[<00000000b5155064>] drm_dev_register+0xdd/0x1d0
[<0000000045fec835>] radeon_pci_probe+0xbd/0x100 [radeon]
[<00000000e69ecca3>] pci_device_probe+0xe1/0x160
[<0000000019484b76>] really_probe.part.0+0xc1/0x2c0
[<000000003f2649da>] __driver_probe_device+0x96/0x130
[<00000000231c5bb1>] driver_probe_device+0x24/0xf0
[<0000000000a42377>] __driver_attach+0x77/0x190
[<00000000d7574da6>] bus_for_each_dev+0x7f/0xd0
[<00000000633166d2>] driver_attach+0x1e/0x30
[<00000000313b05b8>] bus_add_driver+0x12c/0x1e0
iio was allocated in atom_index_iio() called by atom_parse(),
but it doesn't got released when the dirver is shutdown.
Fix this kmemleak by free it in radeon_atombios_fini().
Signed-off-by: Liwei Song <liwei.song@windriver.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/radeon/radeon_device.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c
index cc1c07963116c..bcca0dd67fd15 100644
--- a/drivers/gpu/drm/radeon/radeon_device.c
+++ b/drivers/gpu/drm/radeon/radeon_device.c
@@ -1015,6 +1015,7 @@ void radeon_atombios_fini(struct radeon_device *rdev)
{
if (rdev->mode_info.atom_context) {
kfree(rdev->mode_info.atom_context->scratch);
+ kfree(rdev->mode_info.atom_context->iio);
}
kfree(rdev->mode_info.atom_context);
rdev->mode_info.atom_context = NULL;
--
2.39.0
next prev parent reply other threads:[~2023-02-27 2:14 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-27 2:10 [PATCH AUTOSEL 4.19 01/10] drm/amd/display: Fix potential null-deref in dm_resume Sasha Levin
2023-02-27 2:10 ` Sasha Levin [this message]
2023-02-27 2:11 ` [PATCH AUTOSEL 4.19 03/10] drm/msm/dsi: Add missing check for alloc_ordered_workqueue Sasha Levin
2023-02-27 2:11 ` [PATCH AUTOSEL 4.19 04/10] docs/scripts/gdb: add necessary make scripts_gdb step Sasha Levin
2023-02-27 2:11 ` [PATCH AUTOSEL 4.19 05/10] ASoC: kirkwood: Iterate over array indexes instead of using pointer math Sasha Levin
2023-02-27 2:11 ` [PATCH AUTOSEL 4.19 06/10] regulator: max77802: Bounds check regulator id against opmode Sasha Levin
2023-02-27 2:11 ` [PATCH AUTOSEL 4.19 07/10] regulator: s5m8767: Bounds check id indexing into arrays Sasha Levin
2023-02-27 2:11 ` [PATCH AUTOSEL 4.19 08/10] pinctrl: at91: use devm_kasprintf() to avoid potential leaks Sasha Levin
2023-02-27 2:11 ` [PATCH AUTOSEL 4.19 09/10] dm thin: add cond_resched() to various workqueue loops Sasha Levin
2023-02-27 2:11 ` [PATCH AUTOSEL 4.19 10/10] dm cache: " Sasha Levin
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