From 506ada89629ec7059b96ecfb0dc7d33ece0103ca Mon Sep 17 00:00:00 2001 From: Eduard Zingerman Date: Fri, 4 Sep 2026 17:05:56 -0700 Subject: bpf: mark a NULL kfunc argument precise check_kfunc_arg() allows bpf_register_is_null() for nullable arguments w/o marking the underlying scalar register precise. Hence a checkpoint created on such a path would prune against arbitrary scalar value. Fixes: 3bda08b63670 ("bpf: Allow NULL buffers in bpf_dynptr_slice(_rw)") Signed-off-by: Eduard Zingerman Link: https://lore.kernel.org/r/20260904-register-is-null-precise-fixes-v1-5-0f5a360ff15d@gmail.com Signed-off-by: Alexei Starovoitov --- drivers/hid/hid-macally.c | 45 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 drivers/hid/hid-macally.c (limited to 'drivers/hid/hid-macally.c') diff --git a/drivers/hid/hid-macally.c b/drivers/hid/hid-macally.c new file mode 100644 index 000000000..fe7576458 --- /dev/null +++ b/drivers/hid/hid-macally.c @@ -0,0 +1,45 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * HID driver for quirky Macally devices + * + * Copyright (c) 2019 Alex Henrie + */ + +#include +#include + +#include "hid-ids.h" + +MODULE_AUTHOR("Alex Henrie "); +MODULE_DESCRIPTION("Macally devices"); +MODULE_LICENSE("GPL"); + +/* + * The Macally ikey keyboard says that its logical and usage maximums are both + * 101, but the power key is 102 and the equals key is 103 + */ +static const __u8 *macally_report_fixup(struct hid_device *hdev, __u8 *rdesc, + unsigned int *rsize) +{ + if (*rsize >= 60 && rdesc[53] == 0x65 && rdesc[59] == 0x65) { + hid_info(hdev, + "fixing up Macally ikey keyboard report descriptor\n"); + rdesc[53] = rdesc[59] = 0x67; + } + return rdesc; +} + +static const struct hid_device_id macally_id_table[] = { + { HID_USB_DEVICE(USB_VENDOR_ID_SOLID_YEAR, + USB_DEVICE_ID_MACALLY_IKEY_KEYBOARD) }, + { } +}; +MODULE_DEVICE_TABLE(hid, macally_id_table); + +static struct hid_driver macally_driver = { + .name = "macally", + .id_table = macally_id_table, + .report_fixup = macally_report_fixup, +}; + +module_hid_driver(macally_driver); -- cgit v1.3.1