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From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Roderick Colenbrander <roderick@gaikai.com>,
	Roderick Colenbrander <roderick.colenbrander@sony.com>,
	Jiri Kosina <jkosina@suse.cz>, Sasha Levin <sashal@kernel.org>,
	jikos@kernel.org, benjamin.tissoires@redhat.com,
	linux-input@vger.kernel.org
Subject: [PATCH AUTOSEL 6.1 22/35] HID: playstation: sanity check DualSense calibration data.
Date: Tue, 24 Jan 2023 08:41:18 -0500	[thread overview]
Message-ID: <20230124134131.637036-22-sashal@kernel.org> (raw)
In-Reply-To: <20230124134131.637036-1-sashal@kernel.org>

From: Roderick Colenbrander <roderick@gaikai.com>

[ Upstream commit ccf1e1626d37745d0a697db67407beec9ae9d4b8 ]

Make sure calibration values are defined to prevent potential kernel
crashes. This fixes a hypothetical issue for virtual or clone devices
inspired by a similar fix for DS4.

Signed-off-by: Roderick Colenbrander <roderick.colenbrander@sony.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/hid/hid-playstation.c | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/drivers/hid/hid-playstation.c b/drivers/hid/hid-playstation.c
index 0b58763bfd30..2228f6e4ba23 100644
--- a/drivers/hid/hid-playstation.c
+++ b/drivers/hid/hid-playstation.c
@@ -712,6 +712,7 @@ ATTRIBUTE_GROUPS(ps_device);
 
 static int dualsense_get_calibration_data(struct dualsense *ds)
 {
+	struct hid_device *hdev = ds->base.hdev;
 	short gyro_pitch_bias, gyro_pitch_plus, gyro_pitch_minus;
 	short gyro_yaw_bias, gyro_yaw_plus, gyro_yaw_minus;
 	short gyro_roll_bias, gyro_roll_plus, gyro_roll_minus;
@@ -722,6 +723,7 @@ static int dualsense_get_calibration_data(struct dualsense *ds)
 	int speed_2x;
 	int range_2g;
 	int ret = 0;
+	int i;
 	uint8_t *buf;
 
 	buf = kzalloc(DS_FEATURE_REPORT_CALIBRATION_SIZE, GFP_KERNEL);
@@ -773,6 +775,21 @@ static int dualsense_get_calibration_data(struct dualsense *ds)
 	ds->gyro_calib_data[2].sens_numer = speed_2x*DS_GYRO_RES_PER_DEG_S;
 	ds->gyro_calib_data[2].sens_denom = gyro_roll_plus - gyro_roll_minus;
 
+	/*
+	 * Sanity check gyro calibration data. This is needed to prevent crashes
+	 * during report handling of virtual, clone or broken devices not implementing
+	 * calibration data properly.
+	 */
+	for (i = 0; i < ARRAY_SIZE(ds->gyro_calib_data); i++) {
+		if (ds->gyro_calib_data[i].sens_denom == 0) {
+			hid_warn(hdev, "Invalid gyro calibration data for axis (%d), disabling calibration.",
+					ds->gyro_calib_data[i].abs_code);
+			ds->gyro_calib_data[i].bias = 0;
+			ds->gyro_calib_data[i].sens_numer = DS_GYRO_RANGE;
+			ds->gyro_calib_data[i].sens_denom = S16_MAX;
+		}
+	}
+
 	/*
 	 * Set accelerometer calibration and normalization parameters.
 	 * Data values will be normalized to 1/DS_ACC_RES_PER_G g.
@@ -795,6 +812,21 @@ static int dualsense_get_calibration_data(struct dualsense *ds)
 	ds->accel_calib_data[2].sens_numer = 2*DS_ACC_RES_PER_G;
 	ds->accel_calib_data[2].sens_denom = range_2g;
 
+	/*
+	 * Sanity check accelerometer calibration data. This is needed to prevent crashes
+	 * during report handling of virtual, clone or broken devices not implementing calibration
+	 * data properly.
+	 */
+	for (i = 0; i < ARRAY_SIZE(ds->accel_calib_data); i++) {
+		if (ds->accel_calib_data[i].sens_denom == 0) {
+			hid_warn(hdev, "Invalid accelerometer calibration data for axis (%d), disabling calibration.",
+					ds->accel_calib_data[i].abs_code);
+			ds->accel_calib_data[i].bias = 0;
+			ds->accel_calib_data[i].sens_numer = DS_ACC_RANGE;
+			ds->accel_calib_data[i].sens_denom = S16_MAX;
+		}
+	}
+
 err_free:
 	kfree(buf);
 	return ret;
-- 
2.39.0


  parent reply	other threads:[~2023-01-24 13:44 UTC|newest]

Thread overview: 42+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-01-24 13:40 [PATCH AUTOSEL 6.1 01/35] ARM: dts: imx: Fix pca9547 i2c-mux node name Sasha Levin
2023-01-24 13:40 ` [PATCH AUTOSEL 6.1 02/35] ARM: dts: vf610: Fix pca9548 i2c-mux node names Sasha Levin
2023-01-24 13:40 ` [PATCH AUTOSEL 6.1 03/35] arm64: dts: freescale: Fix pca954x " Sasha Levin
2023-01-24 13:41 ` [PATCH AUTOSEL 6.1 04/35] arm64: dts: imx8mq-thor96: fix no-mmc property for SDHCI Sasha Levin
2023-01-24 13:41 ` [PATCH AUTOSEL 6.1 05/35] firmware: arm_scmi: Clear stale xfer->hdr.status Sasha Levin
2023-01-24 13:41 ` [PATCH AUTOSEL 6.1 06/35] bpf: Skip task with pid=1 in send_signal_common() Sasha Levin
2023-01-24 13:41 ` [PATCH AUTOSEL 6.1 07/35] erofs/zmap.c: Fix incorrect offset calculation Sasha Levin
2023-01-24 13:41 ` [PATCH AUTOSEL 6.1 08/35] mac80211: Fix MLO address translation for multiple bss case Sasha Levin
2023-01-24 13:41 ` [PATCH AUTOSEL 6.1 09/35] arm64: dts: msm8994-angler: fix the memory map Sasha Levin
2023-01-24 13:41 ` [PATCH AUTOSEL 6.1 10/35] ARM: omap1: fix building gpio15xx Sasha Levin
2023-01-24 13:41 ` [PATCH AUTOSEL 6.1 11/35] init/Kconfig: fix LOCALVERSION_AUTO help text Sasha Levin
2023-01-24 13:41 ` [PATCH AUTOSEL 6.1 12/35] kselftest: Fix error message for unconfigured LLVM builds Sasha Levin
2023-01-24 13:41 ` [PATCH AUTOSEL 6.1 13/35] erofs: clean up parsing of fscache related options Sasha Levin
2023-01-24 13:41 ` [PATCH AUTOSEL 6.1 14/35] btrfs: factor out scratching of one regular super block Sasha Levin
2023-01-24 13:41 ` [PATCH AUTOSEL 6.1 15/35] btrfs: stop using write_one_page in btrfs_scratch_superblock Sasha Levin
2023-01-24 16:57   ` David Sterba
2023-02-01 15:21     ` Sasha Levin
2023-01-24 13:41 ` [PATCH AUTOSEL 6.1 16/35] blk-cgroup: fix missing pd_online_fn() while activating policy Sasha Levin
2023-01-24 13:41 ` [PATCH AUTOSEL 6.1 17/35] LoongArch: Get frame info in unwind_start() when regs is not available Sasha Levin
2023-01-24 13:41 ` [PATCH AUTOSEL 6.1 18/35] ACPI: video: Add backlight=native DMI quirk for Acer Aspire 4810T Sasha Levin
2023-01-24 13:41 ` [PATCH AUTOSEL 6.1 19/35] block: fix hctx checks for batch allocation Sasha Levin
2023-01-24 13:41 ` [PATCH AUTOSEL 6.1 20/35] s390: workaround invalid gcc-11 out of bounds read warning Sasha Levin
2023-01-24 13:41 ` [PATCH AUTOSEL 6.1 21/35] HID: uclogic: Add support for XP-PEN Deco 01 V2 Sasha Levin
2023-01-24 13:41 ` Sasha Levin [this message]
2023-01-24 13:41 ` [PATCH AUTOSEL 6.1 23/35] dmaengine: imx-sdma: Fix a possible memory leak in sdma_transfer_init Sasha Levin
2023-01-24 13:41 ` [PATCH AUTOSEL 6.1 24/35] gpiolib: acpi: Allow ignoring wake capability on pins that aren't in _AEI Sasha Levin
2023-01-24 13:41 ` [PATCH AUTOSEL 6.1 25/35] cifs: fix return of uninitialized rc in dfs_cache_update_tgthint() Sasha Levin
2023-01-24 13:41 ` [PATCH AUTOSEL 6.1 26/35] nvme-apple: only reset the controller when RTKit is running Sasha Levin
2023-01-24 13:41 ` [PATCH AUTOSEL 6.1 27/35] octeontx2-af: recover CPT engine when it gets fault Sasha Levin
2023-01-24 13:41 ` [PATCH AUTOSEL 6.1 28/35] octeontx2-af: add mbox for CPT LF reset Sasha Levin
2023-01-24 13:41 ` [PATCH AUTOSEL 6.1 29/35] octeontx2-af: modify FLR sequence for CPT Sasha Levin
2023-01-24 13:41 ` [PATCH AUTOSEL 6.1 30/35] octeontx2-af: optimize cpt pf identification Sasha Levin
2023-01-24 13:41 ` [PATCH AUTOSEL 6.1 31/35] octeontx2-af: restore rxc conf after teardown sequence Sasha Levin
2023-01-24 13:41 ` [PATCH AUTOSEL 6.1 32/35] octeontx2-af: update cpt lf alloc mailbox Sasha Levin
2023-01-24 13:41 ` [PATCH AUTOSEL 6.1 33/35] octeontx2-af: add mbox to return CPT_AF_FLT_INT info Sasha Levin
2023-01-24 13:41 ` [PATCH AUTOSEL 6.1 34/35] prlimit: do_prlimit needs to have a speculation check Sasha Levin
2023-01-24 15:28   ` Greg Kroah-Hartman
2023-01-24 13:41 ` [PATCH AUTOSEL 6.1 35/35] ext4: deal with legacy signed xattr name hash values Sasha Levin
2023-01-24 16:50   ` Linus Torvalds
2023-01-24 17:23     ` Linus Torvalds
2023-01-25 16:01       ` Theodore Ts'o
2023-01-26 14:12         ` Sasha Levin

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