From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org,
Mario Limonciello <mario.limonciello@amd.com>,
Alex Deucher <alexander.deucher@amd.com>
Subject: [PATCH 5.16 02/28] drm/amd/display: explicitly set is_dsc_supported to false before use
Date: Tue, 18 Jan 2022 17:05:57 +0100 [thread overview]
Message-ID: <20220118160452.464486698@linuxfoundation.org> (raw)
In-Reply-To: <20220118160452.384322748@linuxfoundation.org>
From: Mario Limonciello <mario.limonciello@amd.com>
commit 63ad5371cd1e379519395c49a4b6a652c36c98e5 upstream.
When UBSAN is enabled a case is shown on unplugging the display that
this variable hasn't been initialized by `update_dsc_caps`, presumably
when the display was unplugged it wasn't copied from the DPCD.
Link: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1956497
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -6065,6 +6065,7 @@ static void update_dsc_caps(struct amdgp
struct dsc_dec_dpcd_caps *dsc_caps)
{
stream->timing.flags.DSC = 0;
+ dsc_caps->is_dsc_supported = false;
if (aconnector->dc_link && sink->sink_signal == SIGNAL_TYPE_DISPLAY_PORT) {
dc_dsc_parse_dsc_dpcd(aconnector->dc_link->ctx->dc,
next prev parent reply other threads:[~2022-01-18 16:13 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-18 16:05 [PATCH 5.16 00/28] 5.16.2-rc1 review Greg Kroah-Hartman
2022-01-18 16:05 ` [PATCH 5.16 01/28] devtmpfs regression fix: reconfigure on each mount Greg Kroah-Hartman
2022-01-18 16:05 ` Greg Kroah-Hartman [this message]
2022-01-18 16:05 ` [PATCH 5.16 03/28] orangefs: Fix the size of a memory allocation in orangefs_bufmap_alloc() Greg Kroah-Hartman
2022-01-18 16:05 ` [PATCH 5.16 04/28] remoteproc: qcom: pil_info: Dont memcpy_toio more than is provided Greg Kroah-Hartman
2022-01-18 16:06 ` [PATCH 5.16 05/28] vfs: fs_context: fix up param length parsing in legacy_parse_param Greg Kroah-Hartman
2022-01-18 16:06 ` [PATCH 5.16 06/28] perf: Protect perf_guest_cbs with RCU Greg Kroah-Hartman
2022-01-18 16:06 ` [PATCH 5.16 07/28] KVM: x86: Register perf callbacks after calling vendors hardware_setup() Greg Kroah-Hartman
2022-01-18 16:06 ` [PATCH 5.16 08/28] KVM: x86: Register Processor Trace interrupt hook iff PT enabled in guest Greg Kroah-Hartman
2022-01-18 16:06 ` [PATCH 5.16 09/28] KVM: x86: dont print when fail to read/write pv eoi memory Greg Kroah-Hartman
2022-01-18 16:06 ` [PATCH 5.16 10/28] KVM: s390: Clarify SIGP orders versus STOP/RESTART Greg Kroah-Hartman
2022-01-18 16:06 ` [PATCH 5.16 11/28] remoteproc: qcom: pas: Add missing power-domain "mxc" for CDSP Greg Kroah-Hartman
2022-01-18 16:06 ` [PATCH 5.16 12/28] NFSD: Fix zero-length NFSv3 WRITEs Greg Kroah-Hartman
2022-01-18 16:06 ` [PATCH 5.16 13/28] 9p: only copy valid iattrs in 9P2000.L setattr implementation Greg Kroah-Hartman
2022-01-18 16:06 ` [PATCH 5.16 14/28] 9p: fix enodata when reading growing file Greg Kroah-Hartman
2022-01-18 16:06 ` [PATCH 5.16 15/28] video: vga16fb: Only probe for EGA and VGA 16 color graphic cards Greg Kroah-Hartman
2022-01-18 16:06 ` [PATCH 5.16 16/28] media: uvcvideo: fix division by zero at stream start Greg Kroah-Hartman
2022-01-18 16:06 ` [PATCH 5.16 17/28] rtlwifi: rtl8192cu: Fix WARNING when calling local_irq_restore() with interrupts enabled Greg Kroah-Hartman
2022-01-18 16:06 ` [PATCH 5.16 18/28] firmware: qemu_fw_cfg: fix sysfs information leak Greg Kroah-Hartman
2022-01-18 16:06 ` [PATCH 5.16 19/28] firmware: qemu_fw_cfg: fix NULL-pointer deref on duplicate entries Greg Kroah-Hartman
2022-01-18 16:06 ` [PATCH 5.16 20/28] firmware: qemu_fw_cfg: fix kobject leak in probe error path Greg Kroah-Hartman
2022-01-18 16:06 ` [PATCH 5.16 21/28] perf annotate: Avoid TUI crash when navigating in the annotation of recursive functions Greg Kroah-Hartman
2022-01-18 16:06 ` [PATCH 5.16 22/28] ALSA: hda/realtek: Add speaker fixup for some Yoga 15ITL5 devices Greg Kroah-Hartman
2022-01-18 16:06 ` [PATCH 5.16 23/28] ALSA: hda/realtek: Use ALC285_FIXUP_HP_GPIO_LED on another HP laptop Greg Kroah-Hartman
2022-01-18 16:06 ` [PATCH 5.16 24/28] ALSA: hda/realtek - Fix silent output on Gigabyte X570 Aorus Master after reboot from Windows Greg Kroah-Hartman
2022-01-18 16:06 ` [PATCH 5.16 25/28] ALSA: hda: ALC287: Add Lenovo IdeaPad Slim 9i 14ITL5 speaker quirk Greg Kroah-Hartman
2022-01-18 16:06 ` [PATCH 5.16 26/28] ALSA: hda/tegra: Fix Tegra194 HDA reset failure Greg Kroah-Hartman
2022-01-18 16:06 ` [PATCH 5.16 27/28] ALSA: hda/realtek: Add quirk for Legion Y9000X 2020 Greg Kroah-Hartman
2022-01-18 16:06 ` [PATCH 5.16 28/28] ALSA: hda/realtek: Re-order quirk entries for Lenovo Greg Kroah-Hartman
2022-01-18 17:38 ` [PATCH 5.16 00/28] 5.16.2-rc1 review Jeffrin Jose T
2022-01-18 19:54 ` Florian Fainelli
2022-01-18 20:49 ` Jon Hunter
2022-01-18 22:23 ` Shuah Khan
2022-01-19 1:24 ` Zan Aziz
2022-01-19 7:30 ` Naresh Kamboju
2022-01-19 7:53 ` Linus Torvalds
2022-01-19 15:55 ` Guenter Roeck
2022-01-19 17:14 ` Anders Roxell
2022-01-19 11:08 ` Ron Economos
2022-01-19 12:20 ` Rudi Heitbaum
2022-01-19 12:41 ` Naresh Kamboju
2022-01-20 0:44 ` Guenter Roeck
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