Files
linux/include/net
Eric Dumazet f6c3665b6d bonding: annotate data-races around slave->last_rx
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>
2026-01-23 13:55:56 -08:00
..
2025-11-03 16:49:53 +09:00
2024-10-08 15:33:49 -07:00
2024-12-09 14:44:59 -08:00
2025-09-02 15:52:24 -07:00
2025-11-03 17:40:46 -08:00
2025-04-24 17:03:45 -07:00
2025-07-08 18:05:25 -07:00
2025-07-07 16:55:54 -07:00
2025-03-24 10:26:53 +00:00
2022-08-09 22:14:02 -07:00
2024-05-08 10:35:09 +01:00
2024-08-26 09:37:23 -07:00
2025-08-29 19:36:31 -07:00
2024-11-13 18:49:50 -08:00
2024-08-26 09:37:23 -07:00
2025-08-26 17:34:31 -07:00
2025-09-03 15:16:49 -07:00
2025-11-14 18:00:08 -08:00
2024-05-07 01:35:55 +02:00
2026-01-13 10:12:11 +01:00
2024-08-26 09:37:23 -07:00
2025-09-22 11:38:43 -07:00
2021-10-15 11:33:08 +01:00
2024-02-28 11:19:41 +00:00
2025-08-26 17:34:31 -07:00
2024-12-06 17:43:08 -08:00
2021-10-13 09:40:46 -07:00
2024-08-26 09:37:23 -07:00
2025-11-10 10:38:37 +01:00
2025-04-15 08:21:46 -07:00
2023-07-14 20:39:30 -07:00
2025-09-18 12:32:06 +02:00
2024-08-26 09:37:23 -07:00
2024-08-26 09:37:23 -07:00
2025-09-03 15:08:20 -07:00
2025-04-11 18:58:10 -07:00
2025-07-04 09:32:35 +02:00
2025-04-11 18:58:10 -07:00
2024-05-30 18:29:38 -07:00
2025-09-08 18:06:21 -07:00
2023-10-04 11:49:20 -07:00
2025-11-14 18:00:08 -08:00
2025-07-11 11:00:57 -07:00
2023-07-28 14:07:59 -07:00
2022-12-12 15:04:39 -08:00
2023-09-14 16:16:36 +02:00