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Eric Dumazet b956289b83 bonding: annotate data-races around slave->last_rx 
[ Upstream commit f6c3665b6d ]

slave->last_rx and slave->target_last_arp_rx[...] can be read and written
locklessly. Add READ_ONCE() and WRITE_ONCE() annotations.

syzbot reported:

BUG: KCSAN: data-race in bond_rcv_validate / bond_rcv_validate

write to 0xffff888149f0d428 of 8 bytes by interrupt on cpu 1:
  bond_rcv_validate+0x202/0x7a0 drivers/net/bonding/bond_main.c:3335
  bond_handle_frame+0xde/0x5e0 drivers/net/bonding/bond_main.c:1533
  __netif_receive_skb_core+0x5b1/0x1950 net/core/dev.c:6039
  __netif_receive_skb_one_core net/core/dev.c:6150 [inline]
  __netif_receive_skb+0x59/0x270 net/core/dev.c:6265
  netif_receive_skb_internal net/core/dev.c:6351 [inline]
  netif_receive_skb+0x4b/0x2d0 net/core/dev.c:6410
...

write to 0xffff888149f0d428 of 8 bytes by interrupt on cpu 0:
  bond_rcv_validate+0x202/0x7a0 drivers/net/bonding/bond_main.c:3335
  bond_handle_frame+0xde/0x5e0 drivers/net/bonding/bond_main.c:1533
  __netif_receive_skb_core+0x5b1/0x1950 net/core/dev.c:6039
  __netif_receive_skb_one_core net/core/dev.c:6150 [inline]
  __netif_receive_skb+0x59/0x270 net/core/dev.c:6265
  netif_receive_skb_internal net/core/dev.c:6351 [inline]
  netif_receive_skb+0x4b/0x2d0 net/core/dev.c:6410
  br_netif_receive_skb net/bridge/br_input.c:30 [inline]
  NF_HOOK include/linux/netfilter.h:318 [inline]
...

value changed: 0x0000000100005365 -> 0x0000000100005366

Fixes: f5b2b966f0 ("[PATCH] bonding: Validate probe replies in ARP monitor")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Link: https://patch.msgid.link/20260122162914.2299312-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2026-02-06 16:55:41 +01:00
arch arm64: dts: rockchip: remove redundant max-link-speed from nanopi-r4s 2026-01-30 10:28:48 +01:00
block block: fix NULL pointer dereference in blk_zone_reset_all_bio_endio() 2026-01-08 10:15:06 +01:00
certs sign-file,extract-cert: use pkcs11 provider for OPENSSL MAJOR >= 3 2024-09-20 19:52:48 +03:00
crypto crypto: authencesn - reject too-short AAD (assoclen<8) to match ESP/ESN spec 2026-01-30 10:28:39 +01:00
Documentation fou: Don't allow 0 for FOU_ATTR_IPPROTO. 2026-01-30 10:28:39 +01:00
drivers bonding: annotate data-races around slave->last_rx 2026-02-06 16:55:41 +01:00
fs btrfs: fix racy bitfield write in btrfs_clear_space_info_full() 2026-01-30 10:28:48 +01:00
include bonding: annotate data-races around slave->last_rx 2026-02-06 16:55:41 +01:00
init init: handle bootloader identifier in kernel parameters 2025-10-19 16:33:50 +02:00
io_uring io_uring/io-wq: check IO_WQ_BIT_EXIT inside work run loop 2026-01-30 10:28:41 +01:00
ipc ipc: fix to protect IPCS lookups using RCU 2025-06-27 11:11:22 +01:00
kernel sched_ext: Fix possible deadlock in the deferred_irq_workfn() 2026-01-30 10:28:48 +01:00
lib lib/buildid: use __kernel_read() for sleepable context 2026-01-23 11:18:43 +01:00
LICENSES LICENSES: add 0BSD license text 2024-09-01 20:43:24 -07:00
mm migrate: correct lock ordering for hugetlb file folios 2026-01-30 10:28:47 +01:00
net Bluetooth: MGMT: Fix memory leak in set_ssp_complete 2026-02-06 16:55:40 +01:00
rust rust: kbuild: workaround rustdoc doctests modifier bug 2025-11-24 10:36:07 +01:00
samples samples/ftrace: Adjust LoongArch register restore order in direct calls 2026-01-08 10:14:50 +01:00
scripts kconfig: fix static linking of nconf 2026-01-30 10:28:41 +01:00
security keys/trusted_keys: fix handle passed to tpm_buf_append_name during unseal 2026-01-30 10:28:44 +01:00
sound ALSA: usb-audio: Fix use-after-free in snd_usb_mixer_free() 2026-01-30 10:28:45 +01:00
tools selftests/bpf: Check for timeout in perf_link test 2026-01-30 10:28:47 +01:00
usr kbuild: uapi: Strip comments before size type check 2025-11-13 15:34:35 -05:00
virt KVM: Disallow toggling KVM_MEM_GUEST_MEMFD on an existing memslot 2026-01-08 10:14:21 +01:00
.clang-format clang-format: Update with v6.11-rc1's for_each macro list 2024-08-02 13:20:31 +02:00
.clippy.toml rust: give Clippy the minimum supported Rust version 2025-08-01 09:48:44 +01:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.editorconfig .editorconfig: remove trim_trailing_whitespace option 2024-06-13 16:47:52 +02:00
.get_maintainer.ignore Add Jeff Kirsher to .get_maintainer.ignore 2024-03-08 11:36:54 +00:00
.gitattributes .gitattributes: set diff driver for Rust source code files 2023-05-31 17:48:25 +02:00
.gitignore rust: introduce .clippy.toml 2025-03-13 13:01:42 +01:00
.mailmap mailmap: add entry for Thorsten Blum 2024-11-07 14:14:59 -08:00
.rustfmt.toml rust: add .rustfmt.toml 2022-09-28 09:02:20 +02:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: Remove self from DSA entry 2024-11-03 12:52:38 -08:00
Kbuild Kbuild updates for v6.1 2022-10-10 12:00:45 -07:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS staging: rtl8712: Remove driver using deprecated API wext 2025-12-07 06:25:02 +09:00
Makefile Linux 6.12.68 2026-01-30 10:28:49 +01:00
README README: Fix spelling 2024-03-18 03:36:32 -06:00

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 reStructuredText 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.