From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Aditya Pakki <pakki001@umn.edu>, Ben Skeggs <bskeggs@redhat.com>,
Sasha Levin <sashal@kernel.org>,
dri-devel@lists.freedesktop.org, nouveau@lists.freedesktop.org
Subject: [PATCH AUTOSEL 4.9 21/26] drm/nouveau: Fix reference count leak in nouveau_connector_detect
Date: Fri, 21 Aug 2020 12:19:32 -0400 [thread overview]
Message-ID: <20200821161938.349246-21-sashal@kernel.org> (raw)
In-Reply-To: <20200821161938.349246-1-sashal@kernel.org>
From: Aditya Pakki <pakki001@umn.edu>
[ Upstream commit 990a1162986e8eff7ca18cc5a0e03b4304392ae2 ]
nouveau_connector_detect() calls pm_runtime_get_sync and in turn
increments the reference count. In case of failure, decrement the
ref count before returning the error.
Signed-off-by: Aditya Pakki <pakki001@umn.edu>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/nouveau/nouveau_connector.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/nouveau/nouveau_connector.c b/drivers/gpu/drm/nouveau/nouveau_connector.c
index 5bfae1f972c74..0061deca290a4 100644
--- a/drivers/gpu/drm/nouveau/nouveau_connector.c
+++ b/drivers/gpu/drm/nouveau/nouveau_connector.c
@@ -281,8 +281,10 @@ nouveau_connector_detect(struct drm_connector *connector, bool force)
pm_runtime_get_noresume(dev->dev);
} else {
ret = pm_runtime_get_sync(dev->dev);
- if (ret < 0 && ret != -EACCES)
+ if (ret < 0 && ret != -EACCES) {
+ pm_runtime_put_autosuspend(dev->dev);
return conn_status;
+ }
}
nv_encoder = nouveau_connector_ddc_detect(connector);
--
2.25.1
next prev parent reply other threads:[~2020-08-21 16:39 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-21 16:19 [PATCH AUTOSEL 4.9 01/26] ALSA: pci: delete repeated words in comments Sasha Levin
2020-08-21 16:19 ` [PATCH AUTOSEL 4.9 02/26] ASoC: tegra: Fix reference count leaks Sasha Levin
2020-08-21 16:19 ` [PATCH AUTOSEL 4.9 03/26] arm64: dts: qcom: msm8916: Pull down PDM GPIOs during sleep Sasha Levin
2020-08-21 16:19 ` [PATCH AUTOSEL 4.9 04/26] media: pci: ttpci: av7110: fix possible buffer overflow caused by bad DMA value in debiirq() Sasha Levin
2020-08-21 16:19 ` [PATCH AUTOSEL 4.9 05/26] scsi: target: tcmu: Fix crash on ARM during cmd completion Sasha Levin
2020-08-21 16:19 ` [PATCH AUTOSEL 4.9 06/26] iommu/iova: Don't BUG on invalid PFNs Sasha Levin
2020-08-21 16:19 ` [PATCH AUTOSEL 4.9 07/26] drm/amdkfd: Fix reference count leaks Sasha Levin
2020-08-21 16:19 ` [PATCH AUTOSEL 4.9 08/26] drm/radeon: fix multiple reference count leak Sasha Levin
2020-08-21 16:19 ` [PATCH AUTOSEL 4.9 09/26] drm/amdgpu: fix ref count leak in amdgpu_driver_open_kms Sasha Levin
2020-08-21 16:19 ` [PATCH AUTOSEL 4.9 10/26] drm/amd/display: fix ref count leak in amdgpu_drm_ioctl Sasha Levin
2020-08-21 16:19 ` [PATCH AUTOSEL 4.9 11/26] drm/amdgpu: fix ref count leak in amdgpu_display_crtc_set_config Sasha Levin
2020-08-21 16:19 ` [PATCH AUTOSEL 4.9 12/26] drm/amdgpu/display: fix ref count leak when pm_runtime_get_sync fails Sasha Levin
2020-08-21 16:19 ` [PATCH AUTOSEL 4.9 13/26] scsi: lpfc: Fix shost refcount mismatch when deleting vport Sasha Levin
2020-08-21 16:19 ` [PATCH AUTOSEL 4.9 14/26] selftests/powerpc: Purge extra count_pmc() calls of ebb selftests Sasha Levin
2020-08-21 16:19 ` [PATCH AUTOSEL 4.9 15/26] omapfb: fix multiple reference count leaks due to pm_runtime_get_sync Sasha Levin
2020-08-21 16:19 ` [PATCH AUTOSEL 4.9 16/26] PCI: Fix pci_create_slot() reference count leak Sasha Levin
2020-08-21 16:19 ` [PATCH AUTOSEL 4.9 17/26] rtlwifi: rtl8192cu: Prevent leaking urb Sasha Levin
2020-08-21 16:19 ` [PATCH AUTOSEL 4.9 18/26] mips/vdso: Fix resource leaks in genvdso.c Sasha Levin
2020-08-21 16:19 ` [PATCH AUTOSEL 4.9 19/26] cec-api: prevent leaking memory through hole in structure Sasha Levin
2020-08-21 16:19 ` [PATCH AUTOSEL 4.9 20/26] drm/nouveau/drm/noveau: fix reference count leak in nouveau_fbcon_open Sasha Levin
2020-08-21 16:19 ` Sasha Levin [this message]
2020-08-21 16:19 ` [PATCH AUTOSEL 4.9 22/26] locking/lockdep: Fix overflow in presentation of average lock-time Sasha Levin
2020-08-21 16:19 ` [PATCH AUTOSEL 4.9 23/26] scsi: iscsi: Do not put host in iscsi_set_flashnode_param() Sasha Levin
2020-08-21 16:19 ` [PATCH AUTOSEL 4.9 24/26] ceph: fix potential mdsc use-after-free crash Sasha Levin
2020-08-21 16:19 ` [PATCH AUTOSEL 4.9 25/26] scsi: fcoe: Memory leak fix in fcoe_sysfs_fcf_del() Sasha Levin
2020-08-21 16:19 ` [PATCH AUTOSEL 4.9 26/26] EDAC/ie31200: Fallback if host bridge device is already initialized Sasha Levin
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20200821161938.349246-21-sashal@kernel.org \
--to=sashal@kernel.org \
--cc=bskeggs@redhat.com \
--cc=dri-devel@lists.freedesktop.org \
--cc=linux-kernel@vger.kernel.org \
--cc=nouveau@lists.freedesktop.org \
--cc=pakki001@umn.edu \
--cc=stable@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox