Eric Dumazet
ffa8df4f0e
bonding: fix data-races around agg_select_timer
commit 9ceaf6f76b upstream.
syzbot reported that two threads might write over agg_select_timer
at the same time. Make agg_select_timer atomic to fix the races.
BUG: KCSAN: data-race in bond_3ad_initiate_agg_selection / bond_3ad_state_machine_handler
read to 0xffff8881242aea90 of 4 bytes by task 1846 on cpu 1:
bond_3ad_state_machine_handler+0x99/0x2810 drivers/net/bonding/bond_3ad.c:2317
process_one_work+0x3f6/0x960 kernel/workqueue.c:2307
worker_thread+0x616/0xa70 kernel/workqueue.c:2454
kthread+0x1bf/0x1e0 kernel/kthread.c:377
ret_from_fork+0x1f/0x30
write to 0xffff8881242aea90 of 4 bytes by task 25910 on cpu 0:
bond_3ad_initiate_agg_selection+0x18/0x30 drivers/net/bonding/bond_3ad.c:1998
bond_open+0x658/0x6f0 drivers/net/bonding/bond_main.c:3967
__dev_open+0x274/0x3a0 net/core/dev.c:1407
dev_open+0x54/0x190 net/core/dev.c:1443
bond_enslave+0xcef/0x3000 drivers/net/bonding/bond_main.c:1937
do_set_master net/core/rtnetlink.c:2532 [inline]
do_setlink+0x94f/0x2500 net/core/rtnetlink.c:2736
__rtnl_newlink net/core/rtnetlink.c:3414 [inline]
rtnl_newlink+0xfeb/0x13e0 net/core/rtnetlink.c:3529
rtnetlink_rcv_msg+0x745/0x7e0 net/core/rtnetlink.c:5594
netlink_rcv_skb+0x14e/0x250 net/netlink/af_netlink.c:2494
rtnetlink_rcv+0x18/0x20 net/core/rtnetlink.c:5612
netlink_unicast_kernel net/netlink/af_netlink.c:1317 [inline]
netlink_unicast+0x602/0x6d0 net/netlink/af_netlink.c:1343
netlink_sendmsg+0x728/0x850 net/netlink/af_netlink.c:1919
sock_sendmsg_nosec net/socket.c:705 [inline]
sock_sendmsg net/socket.c:725 [inline]
____sys_sendmsg+0x39a/0x510 net/socket.c:2413
___sys_sendmsg net/socket.c:2467 [inline]
__sys_sendmsg+0x195/0x230 net/socket.c:2496
__do_sys_sendmsg net/socket.c:2505 [inline]
__se_sys_sendmsg net/socket.c:2503 [inline]
__x64_sys_sendmsg+0x42/0x50 net/socket.c:2503
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
value changed: 0x00000050 -> 0x0000004f
Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 25910 Comm: syz-executor.1 Tainted: G W 5.17.0-rc4-syzkaller-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Cc: Jay Vosburgh <j.vosburgh@gmail.com>
Cc: Veaceslav Falico <vfalico@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-02-23 12:01:02 +01:00
..
2020-07-15 20:34:11 -07:00
2021-08-12 13:22:08 +02:00
2021-06-10 13:39:24 +02:00
2020-05-19 12:50:14 -07:00
2021-12-14 11:32:37 +01:00
2022-02-23 12:01:01 +01:00
2021-11-26 10:39:18 +01:00
2019-06-05 17:37:07 +02:00
2022-01-05 12:40:30 +01:00
2021-07-14 16:56:19 +02:00
2020-02-28 14:51:30 +01:00
2021-04-14 08:42:05 +02:00
2022-02-01 17:25:47 +01:00
2019-05-30 11:26:41 -07:00
2020-08-20 18:21:28 +01:00
2020-02-28 12:12:53 -08:00
2019-12-11 15:01:23 -08:00
2019-11-06 16:14:48 -08:00
2019-01-23 11:18:00 -08:00
2019-06-19 17:09:55 +02:00
2020-07-21 18:30:47 -07:00
2022-02-23 12:01:02 +01:00
2021-12-14 11:32:36 +01:00
2019-07-04 12:30:48 -07:00
2021-07-28 14:35:33 +02:00
2020-09-25 13:58:01 -07:00
2021-07-31 08:16:11 +02:00
2019-05-21 11:28:45 +02:00
2019-06-19 17:09:55 +02:00
2021-11-02 19:48:20 +01:00
2020-02-29 14:39:08 +01:00
2020-08-20 15:45:15 -04:00
2020-07-15 07:45:24 -07:00
2020-03-27 19:40:38 -07:00
2020-07-19 18:16:40 -07:00
2019-05-30 11:29:52 -07:00
2019-05-30 11:29:52 -07:00
2020-10-09 12:06:53 -07:00
2020-02-29 21:52:20 -08:00
2019-05-21 11:52:39 +02:00
2019-05-21 11:52:39 +02:00
2020-10-05 05:56:48 -07:00
2019-12-16 16:09:44 -08:00
2021-12-08 09:03:22 +01:00
2022-02-16 12:54:26 +01:00
2020-05-08 21:33:33 -07:00
2021-03-30 14:32:05 +02:00
2020-05-05 13:23:29 -07:00
2020-02-19 13:52:32 +01:00
2020-04-20 07:34:16 +02:00
2019-06-19 17:09:55 +02:00
2019-12-24 22:37:30 -08:00
2021-12-08 09:03:21 +01:00
2020-07-24 15:23:31 -07:00
2021-09-18 13:40:30 +02:00
2020-09-14 14:54:56 -07:00
2020-07-31 09:24:24 +02:00
2020-07-31 09:24:24 +02:00
2019-12-09 10:36:44 -08:00
2019-11-05 18:20:55 -08:00
2020-10-05 18:40:01 -07:00
2019-03-22 12:09:31 -07:00
2018-12-10 15:53:04 -08:00
2020-06-22 21:12:44 -07:00
2019-10-25 16:24:32 -07:00
2021-03-04 11:38:46 +01:00
2020-07-31 09:27:00 +02:00
2019-05-30 11:26:41 -07:00
2020-05-11 13:18:54 -07:00
2019-04-22 21:50:53 -07:00
2019-05-30 11:26:32 -07:00
2019-05-30 11:26:32 -07:00
2020-03-30 13:45:04 -07:00
2020-05-09 00:48:20 +02:00
2021-11-18 14:04:08 +01:00
2020-12-01 17:16:54 -08:00
2022-01-27 10:54:33 +01:00
2020-11-23 16:32:33 -08:00
2020-08-26 07:33:19 -07:00
2019-09-27 12:05:02 +02:00
2019-02-08 21:50:15 -08:00
2020-06-20 17:47:53 -07:00
2022-02-01 17:25:44 +01:00
2021-08-12 13:22:07 +02:00
2019-06-18 20:48:45 -04:00
2021-12-08 09:03:26 +01:00
2020-11-13 16:58:10 -08:00
2020-08-31 23:06:51 +02:00
2022-02-01 17:25:44 +01:00
2022-01-27 10:54:33 +01:00
2021-12-01 09:19:05 +01:00
2022-02-23 12:01:01 +01:00
2020-02-05 14:28:09 +01:00
2019-06-19 17:09:55 +02:00
2020-06-20 17:22:22 -07:00
2018-07-11 23:10:19 -07:00
2019-10-08 13:23:05 -07:00
2021-08-04 12:46:43 +02:00
2021-11-18 14:04:27 +01:00
2020-03-29 22:30:57 -07:00
2021-06-23 14:42:52 +02:00
2019-05-30 11:26:41 -07:00
2021-07-14 16:56:28 +02:00
2020-03-02 11:16:27 -08:00
2020-02-29 21:52:20 -08:00
2020-02-28 12:08:37 -08:00
2020-05-29 21:20:20 -07:00
2020-09-24 20:17:01 -07:00
2019-12-09 10:36:44 -08:00
2020-08-24 06:40:07 -07:00
2021-11-18 14:04:29 +01:00
2021-06-23 14:42:44 +02:00
2018-08-01 09:52:30 -07:00
2019-05-21 11:28:45 +02:00
2020-10-09 20:22:32 -07:00
2019-11-12 08:18:03 -08:00
2019-04-11 13:59:49 -07:00
2021-10-06 15:55:53 +02:00
2021-12-01 09:19:03 +01:00
2021-05-19 10:13:17 +02:00
2020-03-04 13:25:55 -08:00
2019-05-30 11:26:32 -07:00
2021-06-03 09:00:51 +02:00
2021-10-17 10:43:33 +02:00
2019-05-30 11:26:32 -07:00
2021-08-18 08:59:11 +02:00
2019-05-30 11:26:32 -07:00
2021-04-14 08:42:07 +02:00
2020-07-31 09:24:23 +02:00
2020-08-24 14:35:00 -07:00
2022-02-01 17:25:48 +01:00
2020-06-23 20:27:09 -07:00
2021-03-30 14:32:08 +02:00
2019-04-22 21:47:25 -07:00
2022-01-27 10:54:35 +01:00
2020-07-13 11:03:44 -07:00
2019-05-30 11:26:32 -07:00
2019-05-30 11:26:32 -07:00
2020-06-04 15:39:32 -07:00
2020-09-28 15:19:03 -07:00
2019-10-05 16:29:00 -07:00
2020-02-29 21:52:19 -08:00
2021-12-08 09:03:23 +01:00
2021-11-18 14:04:27 +01:00
2021-02-17 11:02:29 +01:00
2019-05-30 11:26:32 -07:00
2021-11-18 14:04:08 +01:00
2019-05-30 11:26:32 -07:00
2019-10-04 14:07:07 -07:00
2021-11-02 19:48:19 +01:00
2020-06-23 20:10:15 -07:00
2020-06-18 20:46:23 -07:00
2020-09-28 12:50:12 -07:00
2021-11-18 14:03:43 +01:00
2019-11-14 18:12:17 -08:00
2020-09-14 16:49:39 -07:00
2020-07-15 20:34:02 -07:00
2019-12-09 10:28:43 -08:00
2019-11-16 12:39:10 -08:00
2020-08-31 21:15:04 +02:00
2021-01-17 14:17:05 +01:00
2020-12-09 16:27:42 +01:00
2022-01-27 10:54:18 +01:00
2021-07-14 16:56:23 +02:00