[PATCH AUTOSEL 4.14 02/19] HID: apple: Add support for recent firmware on Magic Keyboards

[PATCH AUTOSEL 4.14 02/19] HID: apple: Add support for recent firmware on Magic Keyboards

[Sasha Levin]

From: Mansour Behabadi <mansour@oxplot.com>

[ Upstream commit e433be929e63265b7412478eb7ff271467aee2d7 ]

Magic Keyboards with more recent firmware (0x0100) report Fn key differently.
Without this patch, Fn key may not behave as expected and may not be
configurable via hid_apple fnmode module parameter.

Signed-off-by: Mansour Behabadi <mansour@oxplot.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/hid/hid-apple.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/hid/hid-apple.c b/drivers/hid/hid-apple.c
index d0a81a03ddbdd..8ab8f2350bbcd 100644
--- a/drivers/hid/hid-apple.c
+++ b/drivers/hid/hid-apple.c
@@ -343,7 +343,8 @@ static int apple_input_mapping(struct hid_device *hdev, struct hid_input *hi,
 		unsigned long **bit, int *max)
 {
 	if (usage->hid == (HID_UP_CUSTOM | 0x0003) ||
-			usage->hid == (HID_UP_MSVENDOR | 0x0003)) {
+			usage->hid == (HID_UP_MSVENDOR | 0x0003) ||
+			usage->hid == (HID_UP_HPVENDOR2 | 0x0003)) {
 		/* The fn key on Apple USB keyboards */
 		set_bit(EV_REP, hi->input->evbit);
 		hid_map_usage_clear(hi, usage, bit, max, EV_KEY, KEY_FN);
-- 
2.20.1

[PATCH AUTOSEL 4.14 03/19] HID: core: fix off-by-one memset in hid_report_raw_event()

[Sasha Levin]

From: Johan Korsnes <jkorsnes@cisco.com>

[ Upstream commit 5ebdffd25098898aff1249ae2f7dbfddd76d8f8f ]

In case a report is greater than HID_MAX_BUFFER_SIZE, it is truncated,
but the report-number byte is not correctly handled. This results in a
off-by-one in the following memset, causing a kernel Oops and ensuing
system crash.

Note: With commit 8ec321e96e05 ("HID: Fix slab-out-of-bounds read in
hid_field_extract") I no longer hit the kernel Oops as we instead fail
"controlled" at probe if there is a report too long in the HID
report-descriptor. hid_report_raw_event() is an exported symbol, so
presumabely we cannot always rely on this being the case.

Fixes: 966922f26c7f ("HID: fix a crash in hid_report_raw_event()
                     function.")
Signed-off-by: Johan Korsnes <jkorsnes@cisco.com>
Cc: Armando Visconti <armando.visconti@st.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/hid/hid-core.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index 2d089d3954e38..75b0a337114df 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -1567,7 +1567,9 @@ int hid_report_raw_event(struct hid_device *hid, int type, u8 *data, u32 size,
 
 	rsize = ((report->size - 1) >> 3) + 1;
 
-	if (rsize > HID_MAX_BUFFER_SIZE)
+	if (report_enum->numbered && rsize >= HID_MAX_BUFFER_SIZE)
+		rsize = HID_MAX_BUFFER_SIZE - 1;
+	else if (rsize > HID_MAX_BUFFER_SIZE)
 		rsize = HID_MAX_BUFFER_SIZE;
 
 	if (csize < rsize) {
-- 
2.20.1

[PATCH AUTOSEL 4.14 04/19] HID: core: increase HID report buffer size to 8KiB

[Sasha Levin]

From: Johan Korsnes <jkorsnes@cisco.com>

[ Upstream commit 84a4062632462c4320704fcdf8e99e89e94c0aba ]

We have a HID touch device that reports its opens and shorts test
results in HID buffers of size 8184 bytes. The maximum size of the HID
buffer is currently set to 4096 bytes, causing probe of this device to
fail. With this patch we increase the maximum size of the HID buffer to
8192 bytes, making device probe and acquisition of said buffers succeed.

Signed-off-by: Johan Korsnes <jkorsnes@cisco.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Armando Visconti <armando.visconti@st.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 include/linux/hid.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/hid.h b/include/linux/hid.h
index 3656a04d764ba..ba1f675598314 100644
--- a/include/linux/hid.h
+++ b/include/linux/hid.h
@@ -477,7 +477,7 @@ struct hid_report_enum {
 };
 
 #define HID_MIN_BUFFER_SIZE	64		/* make sure there is at least a packet size of space */
-#define HID_MAX_BUFFER_SIZE	4096		/* 4kb */
+#define HID_MAX_BUFFER_SIZE	8192		/* 8kb */
 #define HID_CONTROL_FIFO_SIZE	256		/* to init devices with >100 reports */
 #define HID_OUTPUT_FIFO_SIZE	64
 
-- 
2.20.1

[PATCH AUTOSEL 4.14 05/19] HID: hiddev: Fix race in in hiddev_disconnect()

[Sasha Levin]

From: "dan.carpenter@oracle.com" <dan.carpenter@oracle.com>

[ Upstream commit 5c02c447eaeda29d3da121a2e17b97ccaf579b51 ]

Syzbot reports that "hiddev" is used after it's free in hiddev_disconnect().
The hiddev_disconnect() function sets "hiddev->exist = 0;" so
hiddev_release() can free it as soon as we drop the "existancelock"
lock.  This patch moves the mutex_unlock(&hiddev->existancelock) until
after we have finished using it.

Reported-by: syzbot+784ccb935f9900cc7c9e@syzkaller.appspotmail.com
Fixes: 7f77897ef2b6 ("HID: hiddev: fix potential use-after-free")
Suggested-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/hid/usbhid/hiddev.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/hid/usbhid/hiddev.c b/drivers/hid/usbhid/hiddev.c
index bccd97cdc53f9..d9602f3a359e1 100644
--- a/drivers/hid/usbhid/hiddev.c
+++ b/drivers/hid/usbhid/hiddev.c
@@ -954,9 +954,9 @@ void hiddev_disconnect(struct hid_device *hid)
 	hiddev->exist = 0;
 
 	if (hiddev->open) {
-		mutex_unlock(&hiddev->existancelock);
 		hid_hw_close(hiddev->hid);
 		wake_up_interruptible(&hiddev->wait);
+		mutex_unlock(&hiddev->existancelock);
 	} else {
 		mutex_unlock(&hiddev->existancelock);
 		kfree(hiddev);
-- 
2.20.1

[PATCH AUTOSEL 4.14 07/19] HID: i2c-hid: add Trekstor Surfbook E11B to descriptor override

[Sasha Levin]

From: Kai-Heng Feng <kai.heng.feng@canonical.com>

[ Upstream commit be0aba826c4a6ba5929def1962a90d6127871969 ]

The Surfbook E11B uses the SIPODEV SP1064 touchpad, which does not supply
descriptors, so it has to be added to the override list.

BugLink: https://bugs.launchpad.net/bugs/1858299
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/hid/i2c-hid/i2c-hid-dmi-quirks.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/hid/i2c-hid/i2c-hid-dmi-quirks.c b/drivers/hid/i2c-hid/i2c-hid-dmi-quirks.c
index 10af8585c820d..95052373a8282 100644
--- a/drivers/hid/i2c-hid/i2c-hid-dmi-quirks.c
+++ b/drivers/hid/i2c-hid/i2c-hid-dmi-quirks.c
@@ -341,6 +341,14 @@ static const struct dmi_system_id i2c_hid_dmi_desc_override_table[] = {
 		},
 		.driver_data = (void *)&sipodev_desc
 	},
+	{
+		.ident = "Trekstor SURFBOOK E11B",
+		.matches = {
+			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "TREKSTOR"),
+			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "SURFBOOK E11B"),
+		},
+		.driver_data = (void *)&sipodev_desc
+	},
 	{
 		.ident = "Direkt-Tek DTLAPY116-2",
 		.matches = {
-- 
2.20.1