lo speed is unknown, defaulting to 1000 lo speed is unknown, defaulting to 1000 iwpm_register_pid: Unable to send a nlmsg (client = 2) ====================================================== WARNING: possible circular locking dependency detected 6.14.0-rc2-syzkaller-ga64dcfb451e2 #0 Not tainted ------------------------------------------------------ syz.1.570/9837 is trying to acquire lock: ffff0000f3684218 (sk_lock-AF_INET){+.+.}-{0:0}, at: siw_create_listen+0x164/0xe50 drivers/infiniband/sw/siw/siw_cm.c:1777 but task is already holding lock: ffff8000923374e8 (lock#7){+.+.}-{4:4}, at: cma_add_one+0x510/0xab4 drivers/infiniband/core/cma.c:5370 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (lock#7){+.+.}-{4:4}: __mutex_lock_common+0x1f0/0x24b8 kernel/locking/mutex.c:585 __mutex_lock kernel/locking/mutex.c:730 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:782 cma_init+0x2c/0x158 drivers/infiniband/core/cma.c:5454 do_one_initcall+0x254/0xaa4 init/main.c:1257 do_initcall_level+0x154/0x214 init/main.c:1319 do_initcalls+0x84/0xf4 init/main.c:1335 do_basic_setup+0x8c/0xa0 init/main.c:1354 kernel_init_freeable+0x324/0x478 init/main.c:1568 kernel_init+0x24/0x2a0 init/main.c:1457 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862 -> #2 (rtnl_mutex){+.+.}-{4:4}: __mutex_lock_common+0x1f0/0x24b8 kernel/locking/mutex.c:585 __mutex_lock kernel/locking/mutex.c:730 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:782 rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 start_sync_thread+0xe0/0x24bc net/netfilter/ipvs/ip_vs_sync.c:1761 do_ip_vs_set_ctl+0x550/0xd70 net/netfilter/ipvs/ip_vs_ctl.c:2732 nf_setsockopt+0x270/0x290 net/netfilter/nf_sockopt.c:101 ip_setsockopt+0x118/0x128 net/ipv4/ip_sockglue.c:1424 tcp_setsockopt+0xcc/0xe8 net/ipv4/tcp.c:4030 sock_common_setsockopt+0xb0/0xcc net/core/sock.c:3837 smc_setsockopt+0x1f8/0xd0c net/smc/af_smc.c:3081 do_sock_setsockopt+0x2a0/0x4e0 net/socket.c:2303 __sys_setsockopt net/socket.c:2328 [inline] __do_sys_setsockopt net/socket.c:2334 [inline] __se_sys_setsockopt net/socket.c:2331 [inline] __arm64_sys_setsockopt+0x170/0x1e0 net/socket.c:2331 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 -> #1 (&smc->clcsock_release_lock){+.+.}-{4:4}: __mutex_lock_common+0x1f0/0x24b8 kernel/locking/mutex.c:585 __mutex_lock kernel/locking/mutex.c:730 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:782 smc_switch_to_fallback+0x48/0xa7c net/smc/af_smc.c:903 smc_sendmsg+0xfc/0x9f8 net/smc/af_smc.c:2781 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg net/socket.c:733 [inline] __sys_sendto+0x360/0x4d8 net/socket.c:2187 __do_sys_sendto net/socket.c:2194 [inline] __se_sys_sendto net/socket.c:2190 [inline] __arm64_sys_sendto+0xd8/0xf8 net/socket.c:2190 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 -> #0 (sk_lock-AF_INET){+.+.}-{0:0}: check_prev_add kernel/locking/lockdep.c:3163 [inline] check_prevs_add kernel/locking/lockdep.c:3282 [inline] validate_chain kernel/locking/lockdep.c:3906 [inline] __lock_acquire+0x34f0/0x7904 kernel/locking/lockdep.c:5228 lock_acquire+0x23c/0x724 kernel/locking/lockdep.c:5851 lock_sock_nested net/core/sock.c:3645 [inline] lock_sock include/net/sock.h:1624 [inline] sock_set_reuseaddr+0x58/0x154 net/core/sock.c:788 siw_create_listen+0x164/0xe50 drivers/infiniband/sw/siw/siw_cm.c:1777 iw_cm_listen+0x14c/0x204 drivers/infiniband/core/iwcm.c:585 cma_iw_listen drivers/infiniband/core/cma.c:2684 [inline] rdma_listen+0x8d0/0xb64 drivers/infiniband/core/cma.c:3969 cma_listen_on_dev+0x31c/0x648 drivers/infiniband/core/cma.c:2743 cma_add_one+0x5ec/0xab4 drivers/infiniband/core/cma.c:5373 add_client_context+0x45c/0x7d0 drivers/infiniband/core/device.c:711 enable_device_and_get+0x1a8/0x3e8 drivers/infiniband/core/device.c:1322 ib_register_device+0xe84/0x110c drivers/infiniband/core/device.c:1433 siw_device_register drivers/infiniband/sw/siw/siw_main.c:72 [inline] siw_newlink+0x77c/0xb84 drivers/infiniband/sw/siw/siw_main.c:431 nldev_newlink+0x47c/0x54c drivers/infiniband/core/nldev.c:1795 rdma_nl_rcv_skb drivers/infiniband/core/netlink.c:239 [inline] rdma_nl_rcv+0x5c4/0x858 drivers/infiniband/core/netlink.c:259 netlink_unicast_kernel net/netlink/af_netlink.c:1322 [inline] netlink_unicast+0x668/0x8a4 net/netlink/af_netlink.c:1348 netlink_sendmsg+0x7b4/0xa9c net/netlink/af_netlink.c:1892 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg net/socket.c:733 [inline] ____sys_sendmsg+0x570/0x87c net/socket.c:2573 ___sys_sendmsg net/socket.c:2627 [inline] __sys_sendmsg+0x238/0x304 net/socket.c:2659 __do_sys_sendmsg net/socket.c:2664 [inline] __se_sys_sendmsg net/socket.c:2662 [inline] __arm64_sys_sendmsg+0x80/0x94 net/socket.c:2662 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 other info that might help us debug this: Chain exists of: sk_lock-AF_INET --> rtnl_mutex --> lock#7 Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(lock#7); lock(rtnl_mutex); lock(lock#7); lock(sk_lock-AF_INET); *** DEADLOCK *** 6 locks held by syz.1.570/9837: #0: ffff800097b7ec98 (&rdma_nl_types[idx].sem){.+.+}-{4:4}, at: rdma_nl_rcv_msg drivers/infiniband/core/netlink.c:164 [inline] #0: ffff800097b7ec98 (&rdma_nl_types[idx].sem){.+.+}-{4:4}, at: rdma_nl_rcv_skb drivers/infiniband/core/netlink.c:239 [inline] #0: ffff800097b7ec98 (&rdma_nl_types[idx].sem){.+.+}-{4:4}, at: rdma_nl_rcv+0x330/0x858 drivers/infiniband/core/netlink.c:259 #1: ffff800092323850 (link_ops_rwsem){++++}-{4:4}, at: nldev_newlink+0x334/0x54c drivers/infiniband/core/nldev.c:1785 #2: ffff800092314070 (devices_rwsem){++++}-{4:4}, at: enable_device_and_get+0x104/0x3e8 drivers/infiniband/core/device.c:1312 #3: ffff800092314370 (clients_rwsem){++++}-{4:4}, at: enable_device_and_get+0x160/0x3e8 drivers/infiniband/core/device.c:1320 #4: ffff0000f125c5e0 (&device->client_data_rwsem){++++}-{4:4}, at: add_client_context+0x424/0x7d0 drivers/infiniband/core/device.c:709 #5: ffff8000923374e8 (lock#7){+.+.}-{4:4}, at: cma_add_one+0x510/0xab4 drivers/infiniband/core/cma.c:5370 stack backtrace: CPU: 1 UID: 0 PID: 9837 Comm: syz.1.570 Not tainted 6.14.0-rc2-syzkaller-ga64dcfb451e2 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:466 (C) __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 print_circular_bug+0x154/0x1c0 kernel/locking/lockdep.c:2076 check_noncircular+0x310/0x404 kernel/locking/lockdep.c:2208 check_prev_add kernel/locking/lockdep.c:3163 [inline] check_prevs_add kernel/locking/lockdep.c:3282 [inline] validate_chain kernel/locking/lockdep.c:3906 [inline] __lock_acquire+0x34f0/0x7904 kernel/locking/lockdep.c:5228 lock_acquire+0x23c/0x724 kernel/locking/lockdep.c:5851 lock_sock_nested net/core/sock.c:3645 [inline] lock_sock include/net/sock.h:1624 [inline] sock_set_reuseaddr+0x58/0x154 net/core/sock.c:788 siw_create_listen+0x164/0xe50 drivers/infiniband/sw/siw/siw_cm.c:1777 iw_cm_listen+0x14c/0x204 drivers/infiniband/core/iwcm.c:585 cma_iw_listen drivers/infiniband/core/cma.c:2684 [inline] rdma_listen+0x8d0/0xb64 drivers/infiniband/core/cma.c:3969 cma_listen_on_dev+0x31c/0x648 drivers/infiniband/core/cma.c:2743 cma_add_one+0x5ec/0xab4 drivers/infiniband/core/cma.c:5373 add_client_context+0x45c/0x7d0 drivers/infiniband/core/device.c:711 enable_device_and_get+0x1a8/0x3e8 drivers/infiniband/core/device.c:1322 ib_register_device+0xe84/0x110c drivers/infiniband/core/device.c:1433 siw_device_register drivers/infiniband/sw/siw/siw_main.c:72 [inline] siw_newlink+0x77c/0xb84 drivers/infiniband/sw/siw/siw_main.c:431 nldev_newlink+0x47c/0x54c drivers/infiniband/core/nldev.c:1795 rdma_nl_rcv_skb drivers/infiniband/core/netlink.c:239 [inline] rdma_nl_rcv+0x5c4/0x858 drivers/infiniband/core/netlink.c:259 netlink_unicast_kernel net/netlink/af_netlink.c:1322 [inline] netlink_unicast+0x668/0x8a4 net/netlink/af_netlink.c:1348 netlink_sendmsg+0x7b4/0xa9c net/netlink/af_netlink.c:1892 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg net/socket.c:733 [inline] ____sys_sendmsg+0x570/0x87c net/socket.c:2573 ___sys_sendmsg net/socket.c:2627 [inline] __sys_sendmsg+0x238/0x304 net/socket.c:2659 __do_sys_sendmsg net/socket.c:2664 [inline] __se_sys_sendmsg net/socket.c:2662 [inline] __arm64_sys_sendmsg+0x80/0x94 net/socket.c:2662 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 infiniband syz2: RDMA CMA: cma_listen_on_dev, error -98 lo speed is unknown, defaulting to 1000 lo speed is unknown, defaulting to 1000 lo speed is unknown, defaulting to 1000 lo speed is unknown, defaulting to 1000 lo speed is unknown, defaulting to 1000