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authorLinus Torvalds <torvalds@linux-foundation.org>2020-09-02 12:55:46 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2020-09-02 12:55:46 -0700
commitfc3abb53250a90ba2150eebd182137c136f4d25a (patch)
treec4333e5ab89c4944d82bd72e60819d0fb8baa9cc
parentc3a1309564d3834bad6547a50e58bd195ee85fb6 (diff)
parent35556bed836f8dc07ac55f69c8d17dce3e7f0e25 (diff)
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid
Pull HID fixes from Jiri Kosina: - data sanitization and validtion fixes for report descriptor parser from Marc Zyngier - memory leak fix for hid-elan driver from Dinghao Liu - two device-specific quirks * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid: HID: core: Sanitize event code and type when mapping input HID: core: Correctly handle ReportSize being zero HID: elan: Fix memleak in elan_input_configured HID: microsoft: Add rumble support for the 8bitdo SN30 Pro+ controller HID: quirks: Set INCREMENT_USAGE_ON_DUPLICATE for all Saitek X52 devices
-rw-r--r--drivers/hid/hid-core.c15
-rw-r--r--drivers/hid/hid-elan.c2
-rw-r--r--drivers/hid/hid-ids.h3
-rw-r--r--drivers/hid/hid-input.c4
-rw-r--r--drivers/hid/hid-microsoft.c2
-rw-r--r--drivers/hid/hid-multitouch.c2
-rw-r--r--drivers/hid/hid-quirks.c2
-rw-r--r--include/linux/hid.h42
8 files changed, 57 insertions, 15 deletions
diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index 359616e3efbb..d2ecc9c45255 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -1598,6 +1598,17 @@ static void hid_output_field(const struct hid_device *hid,
}
/*
+ * Compute the size of a report.
+ */
+static size_t hid_compute_report_size(struct hid_report *report)
+{
+ if (report->size)
+ return ((report->size - 1) >> 3) + 1;
+
+ return 0;
+}
+
+/*
* Create a report. 'data' has to be allocated using
* hid_alloc_report_buf() so that it has proper size.
*/
@@ -1609,7 +1620,7 @@ void hid_output_report(struct hid_report *report, __u8 *data)
if (report->id > 0)
*data++ = report->id;
- memset(data, 0, ((report->size - 1) >> 3) + 1);
+ memset(data, 0, hid_compute_report_size(report));
for (n = 0; n < report->maxfield; n++)
hid_output_field(report->device, report->field[n], data);
}
@@ -1739,7 +1750,7 @@ int hid_report_raw_event(struct hid_device *hid, int type, u8 *data, u32 size,
csize--;
}
- rsize = ((report->size - 1) >> 3) + 1;
+ rsize = hid_compute_report_size(report);
if (report_enum->numbered && rsize >= HID_MAX_BUFFER_SIZE)
rsize = HID_MAX_BUFFER_SIZE - 1;
diff --git a/drivers/hid/hid-elan.c b/drivers/hid/hid-elan.c
index 45c4f888b7c4..dae193749d44 100644
--- a/drivers/hid/hid-elan.c
+++ b/drivers/hid/hid-elan.c
@@ -188,6 +188,7 @@ static int elan_input_configured(struct hid_device *hdev, struct hid_input *hi)
ret = input_mt_init_slots(input, ELAN_MAX_FINGERS, INPUT_MT_POINTER);
if (ret) {
hid_err(hdev, "Failed to init elan MT slots: %d\n", ret);
+ input_free_device(input);
return ret;
}
@@ -198,6 +199,7 @@ static int elan_input_configured(struct hid_device *hdev, struct hid_input *hi)
if (ret) {
hid_err(hdev, "Failed to register elan input device: %d\n",
ret);
+ input_mt_destroy_slots(input);
input_free_device(input);
return ret;
}
diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index a8e3b2796be8..74fc1df6e3c2 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -850,6 +850,7 @@
#define USB_DEVICE_ID_MS_POWER_COVER 0x07da
#define USB_DEVICE_ID_MS_XBOX_ONE_S_CONTROLLER 0x02fd
#define USB_DEVICE_ID_MS_PIXART_MOUSE 0x00cb
+#define USB_DEVICE_ID_8BITDO_SN30_PRO_PLUS 0x02e0
#define USB_VENDOR_ID_MOJO 0x8282
#define USB_DEVICE_ID_RETRO_ADAPTER 0x3201
@@ -1015,6 +1016,8 @@
#define USB_DEVICE_ID_SAITEK_RAT9 0x0cfa
#define USB_DEVICE_ID_SAITEK_MMO7 0x0cd0
#define USB_DEVICE_ID_SAITEK_X52 0x075c
+#define USB_DEVICE_ID_SAITEK_X52_2 0x0255
+#define USB_DEVICE_ID_SAITEK_X52_PRO 0x0762
#define USB_VENDOR_ID_SAMSUNG 0x0419
#define USB_DEVICE_ID_SAMSUNG_IR_REMOTE 0x0001
diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c
index b8eabf206e74..88e19996427e 100644
--- a/drivers/hid/hid-input.c
+++ b/drivers/hid/hid-input.c
@@ -1132,6 +1132,10 @@ static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_fiel
}
mapped:
+ /* Mapping failed, bail out */
+ if (!bit)
+ return;
+
if (device->driver->input_mapped &&
device->driver->input_mapped(device, hidinput, field, usage,
&bit, &max) < 0) {
diff --git a/drivers/hid/hid-microsoft.c b/drivers/hid/hid-microsoft.c
index 5576fed7bc15..071fd093a5f4 100644
--- a/drivers/hid/hid-microsoft.c
+++ b/drivers/hid/hid-microsoft.c
@@ -448,6 +448,8 @@ static const struct hid_device_id ms_devices[] = {
.driver_data = MS_SURFACE_DIAL },
{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_XBOX_ONE_S_CONTROLLER),
.driver_data = MS_QUIRK_FF },
+ { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_8BITDO_SN30_PRO_PLUS),
+ .driver_data = MS_QUIRK_FF },
{ }
};
MODULE_DEVICE_TABLE(hid, ms_devices);
diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
index 3f94b4954225..e3152155c4b8 100644
--- a/drivers/hid/hid-multitouch.c
+++ b/drivers/hid/hid-multitouch.c
@@ -856,6 +856,8 @@ static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi,
code = BTN_0 + ((usage->hid - 1) & HID_USAGE);
hid_map_usage(hi, usage, bit, max, EV_KEY, code);
+ if (!*bit)
+ return -1;
input_set_capability(hi->input, EV_KEY, code);
return 1;
diff --git a/drivers/hid/hid-quirks.c b/drivers/hid/hid-quirks.c
index a65aef6a322f..7a2be0205dfd 100644
--- a/drivers/hid/hid-quirks.c
+++ b/drivers/hid/hid-quirks.c
@@ -150,6 +150,8 @@ static const struct hid_device_id hid_quirks[] = {
{ HID_USB_DEVICE(USB_VENDOR_ID_RETROUSB, USB_DEVICE_ID_RETROUSB_SNES_RETROPORT), HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE },
{ HID_USB_DEVICE(USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_RUMBLEPAD), HID_QUIRK_BADPAD },
{ HID_USB_DEVICE(USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_X52), HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE },
+ { HID_USB_DEVICE(USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_X52_2), HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE },
+ { HID_USB_DEVICE(USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_X52_PRO), HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE },
{ HID_USB_DEVICE(USB_VENDOR_ID_SEMICO, USB_DEVICE_ID_SEMICO_USB_KEYKOARD2), HID_QUIRK_NO_INIT_REPORTS },
{ HID_USB_DEVICE(USB_VENDOR_ID_SEMICO, USB_DEVICE_ID_SEMICO_USB_KEYKOARD), HID_QUIRK_NO_INIT_REPORTS },
{ HID_USB_DEVICE(USB_VENDOR_ID_SENNHEISER, USB_DEVICE_ID_SENNHEISER_BTD500USB), HID_QUIRK_NOGET },
diff --git a/include/linux/hid.h b/include/linux/hid.h
index 875f71132b14..c7044a14200e 100644
--- a/include/linux/hid.h
+++ b/include/linux/hid.h
@@ -959,34 +959,49 @@ static inline void hid_device_io_stop(struct hid_device *hid) {
* @max: maximal valid usage->code to consider later (out parameter)
* @type: input event type (EV_KEY, EV_REL, ...)
* @c: code which corresponds to this usage and type
+ *
+ * The value pointed to by @bit will be set to NULL if either @type is
+ * an unhandled event type, or if @c is out of range for @type. This
+ * can be used as an error condition.
*/
static inline void hid_map_usage(struct hid_input *hidinput,
struct hid_usage *usage, unsigned long **bit, int *max,
- __u8 type, __u16 c)
+ __u8 type, unsigned int c)
{
struct input_dev *input = hidinput->input;
-
- usage->type = type;
- usage->code = c;
+ unsigned long *bmap = NULL;
+ unsigned int limit = 0;
switch (type) {
case EV_ABS:
- *bit = input->absbit;
- *max = ABS_MAX;
+ bmap = input->absbit;
+ limit = ABS_MAX;
break;
case EV_REL:
- *bit = input->relbit;
- *max = REL_MAX;
+ bmap = input->relbit;
+ limit = REL_MAX;
break;
case EV_KEY:
- *bit = input->keybit;
- *max = KEY_MAX;
+ bmap = input->keybit;
+ limit = KEY_MAX;
break;
case EV_LED:
- *bit = input->ledbit;
- *max = LED_MAX;
+ bmap = input->ledbit;
+ limit = LED_MAX;
break;
}
+
+ if (unlikely(c > limit || !bmap)) {
+ pr_warn_ratelimited("%s: Invalid code %d type %d\n",
+ input->name, c, type);
+ *bit = NULL;
+ return;
+ }
+
+ usage->type = type;
+ usage->code = c;
+ *max = limit;
+ *bit = bmap;
}
/**
@@ -1000,7 +1015,8 @@ static inline void hid_map_usage_clear(struct hid_input *hidinput,
__u8 type, __u16 c)
{
hid_map_usage(hidinput, usage, bit, max, type, c);
- clear_bit(c, *bit);
+ if (*bit)
+ clear_bit(usage->code, *bit);
}
/**