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Filename Latest commit message Latest commit date
Marc Kleine-Budde 113e0cde39 can: kvaser_usb: hydra: help gcc-13 to figure out cmd_len
[ Upstream commit f006229135b7debf4037adb1eb93e358559593db ]

Debian's gcc-13 [1] throws the following error in
kvaser_usb_hydra_cmd_size():

[1] gcc version 13.0.0 20221214 (experimental) [master r13-4693-g512098a3316] (Debian 13-20221214-1)

| drivers/net/can/usb/kvaser_usb/kvaser_usb_hydra.c:502:65: error:
| array subscript ‘struct kvaser_cmd_ext[0]’ is partly outside array
| bounds of ‘unsigned char[32]’ [-Werror=array-bounds=]
|   502 |                 ret = le16_to_cpu(((struct kvaser_cmd_ext *)cmd)->len);

kvaser_usb_hydra_cmd_size() returns the size of given command. It
depends on the command number (cmd->header.cmd_no). For extended
commands (cmd->header.cmd_no == CMD_EXTENDED) the above shown code is
executed.

Help gcc to recognize that this code path is not taken in all cases,
by calling kvaser_usb_hydra_cmd_size() directly after assigning the
command number.

Fixes: aec5fb2268 ("can: kvaser_usb: Add support for Kvaser USB hydra family")
Cc: Jimmy Assarsson <extja@kvaser.com>
Cc: Anssi Hannula <anssi.hannula@bitwise.fi>
Link: https://lore.kernel.org/all/20221219110104.1073881-1-mkl@pengutronix.de
Tested-by: Jimmy Assarsson <extja@kvaser.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-02-25 11:53:26 +01:00
arch KVM: VMX: Execute IBPB on emulated VM-exit when guest has IBRS 2023-02-25 11:53:26 +01:00
block blk-cgroup: fix missing pd_online_fn() while activating policy 2023-02-06 07:52:48 +01:00
certs
crypto
Documentation docs: Fix path paste-o for /sys/kernel/warn_count 2023-02-06 07:52:50 +01:00
drivers can: kvaser_usb: hydra: help gcc-13 to figure out cmd_len 2023-02-25 11:53:26 +01:00
fs nilfs2: fix underflow in second superblock position calculations 2023-02-22 12:50:41 +01:00
include random: always mix cycle counter in add_latent_entropy() 2023-02-25 11:53:25 +01:00
init
ipc
kernel sched/psi: Fix use-after-free in ep_remove_wait_queue() 2023-02-22 12:50:39 +01:00
lib netlink: prevent potential spectre v1 gadgets 2023-02-06 07:52:45 +01:00
LICENSES
mm Revert "mm: Always release pages to the buddy allocator in memblock_free_late()." 2023-02-22 12:50:39 +01:00
net net: sched: sch: Fix off by one in htb_activate_prios() 2023-02-22 12:50:42 +01:00
samples
scripts ftrace/scripts: Update the instructions for ftrace-bisect.sh 2023-02-06 07:52:44 +01:00
security
sound ASoC: SOF: Intel: hda-dai: fix possible stream_tag leak 2023-02-22 12:50:42 +01:00
tools Revert "ipv4: Fix incorrect route flushing when source address is deleted" 2023-02-22 12:50:38 +01:00
usr
virt
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS net/phy/mdio-i2c: Move header file to include/linux/mdio 2023-02-06 07:52:46 +01:00
Makefile Linux 5.4.232 2023-02-22 12:50:42 +01:00
README

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.