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Filename Latest commit message Latest commit date
Gustavo A. R. Silva 9857e028d4 netfilter: Replace zero-length array with flexible-array member
[ Upstream commit 6daf14140129d30207ed6a0a69851fa6a3636bda ]

The current codebase makes use of the zero-length array language
extension to the C90 standard, but the preferred mechanism to declare
variable-length types such as these ones is a flexible array member[1][2],
introduced in C99:

struct foo {
        int stuff;
        struct boo array[];
};

By making use of the mechanism above, we will get a compiler warning
in case the flexible array does not occur last in the structure, which
will help us prevent some kind of undefined behavior bugs from being
inadvertently introduced[3] to the codebase from now on.

Also, notice that, dynamic memory allocations won't be affected by
this change:

"Flexible array members have incomplete type, and so the sizeof operator
may not be applied. As a quirk of the original implementation of
zero-length arrays, sizeof evaluates to zero."[1]

Lastly, fix checkpatch.pl warning
WARNING: __aligned(size) is preferred over __attribute__((aligned(size)))
in net/bridge/netfilter/ebtables.c

This issue was found with the help of Coccinelle.

[1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
[2] https://github.com/KSPP/linux/issues/21
[3] commit 7649773293 ("cxgb3/l2t: Fix undefined behaviour")

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Stable-dep-of: 542ed8145e6f ("netfilter: nft_set_hash: unaligned atomic read on struct nft_set_ext")
Signed-off-by: Sasha Levin <sashal@kernel.org>
2025-01-09 13:23:35 +01:00
arch MIPS: Probe toolchain support of -msym32 2025-01-09 13:23:32 +01:00
block blk-iocost: Avoid using clamp() on inuse in __propagate_weights() 2024-12-19 18:05:04 +01:00
certs
crypto
Documentation PCI: Add 'reset_subordinate' to reset hierarchy below bridge 2024-12-14 19:44:54 +01:00
drivers drm/bridge: adv7511_audio: Update Audio InfoFrame properly 2025-01-09 13:23:34 +01:00
fs btrfs: avoid monopolizing a core when activating a swap file 2025-01-09 13:23:33 +01:00
include netfilter: Replace zero-length array with flexible-array member 2025-01-09 13:23:35 +01:00
init
ipc
kernel tracing/kprobe: Make trace_kprobe's module callback called after jump_label update 2025-01-09 13:23:31 +01:00
lib lib: string_helpers: silence snprintf() output truncation warning 2024-12-14 19:44:39 +01:00
LICENSES
mm
net netfilter: Replace zero-length array with flexible-array member 2025-01-09 13:23:35 +01:00
samples samples/bpf: Fix a resource leak 2024-12-14 19:44:50 +01:00
scripts modpost: Add .irqentry.text to OTHER_SECTIONS 2024-12-14 19:44:56 +01:00
security selinux: ignore unknown extended permissions 2025-01-09 13:23:33 +01:00
sound ALSA: usb: Fix UBSAN warning in parse_audio_unit() 2025-01-09 13:23:26 +01:00
tools perf trace: Avoid garbage when not printing a syscall's arguments 2024-12-14 19:44:32 +01:00
usr
virt KVM: arm64: Ignore PMCNTENSET_EL0 while checking for overflow status 2024-12-19 18:05:04 +01:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS
Makefile Linux 5.4.288 2024-12-19 18:05:05 +01:00
README

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

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