lo speed is unknown, defaulting to 1000
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
6.13.0-syzkaller-04046-g0ad9617c78ac #0 Not tainted
------------------------------------------------------
syz.1.43/6067 is trying to acquire lock:
ffff888060d01d58 (sk_lock-AF_INET6){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1624 [inline]
ffff888060d01d58 (sk_lock-AF_INET6){+.+.}-{0:0}, at: sock_set_reuseaddr+0x17/0x60 net/core/sock.c:788

but task is already holding lock:
ffffffff8fa5b588 (lock#7){+.+.}-{4:4}, at: cma_add_one+0x6bc/0xcd0 drivers/infiniband/core/cma.c:5370

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #2 (lock#7){+.+.}-{4:4}:
       lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851
       __mutex_lock_common kernel/locking/mutex.c:585 [inline]
       __mutex_lock+0x19c/0x1010 kernel/locking/mutex.c:730
       cma_init+0x1e/0x140 drivers/infiniband/core/cma.c:5454
       do_one_initcall+0x248/0x870 init/main.c:1267
       do_initcall_level+0x157/0x210 init/main.c:1329
       do_initcalls+0x3f/0x80 init/main.c:1345
       kernel_init_freeable+0x435/0x5d0 init/main.c:1578
       kernel_init+0x1d/0x2b0 init/main.c:1467
       ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
       ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

-> #1 (rtnl_mutex){+.+.}-{4:4}:
       lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851
       __mutex_lock_common kernel/locking/mutex.c:585 [inline]
       __mutex_lock+0x19c/0x1010 kernel/locking/mutex.c:730
       smc_vlan_by_tcpsk+0x399/0x4e0 net/smc/smc_core.c:1908
       __smc_connect+0x296/0x1910 net/smc/af_smc.c:1520
       smc_connect+0x868/0xde0 net/smc/af_smc.c:1696
       __sys_connect_file net/socket.c:2040 [inline]
       __sys_connect+0x288/0x2d0 net/socket.c:2059
       __do_sys_connect net/socket.c:2065 [inline]
       __se_sys_connect net/socket.c:2062 [inline]
       __x64_sys_connect+0x7a/0x90 net/socket.c:2062
       do_syscall_x64 arch/x86/entry/common.c:52 [inline]
       do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #0 (sk_lock-AF_INET6){+.+.}-{0:0}:
       check_prev_add kernel/locking/lockdep.c:3163 [inline]
       check_prevs_add kernel/locking/lockdep.c:3282 [inline]
       validate_chain+0x18ef/0x5920 kernel/locking/lockdep.c:3906
       __lock_acquire+0x1397/0x2100 kernel/locking/lockdep.c:5228
       lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851
       lock_sock_nested+0x48/0x100 net/core/sock.c:3645
       lock_sock include/net/sock.h:1624 [inline]
       sock_set_reuseaddr+0x17/0x60 net/core/sock.c:788
       siw_create_listen+0x19d/0x11d0 drivers/infiniband/sw/siw/siw_cm.c:1777
       iw_cm_listen+0x15e/0x230 drivers/infiniband/core/iwcm.c:585
       cma_iw_listen drivers/infiniband/core/cma.c:2684 [inline]
       rdma_listen+0x941/0xd60 drivers/infiniband/core/cma.c:3969
       cma_listen_on_dev+0x3e3/0x6f0 drivers/infiniband/core/cma.c:2743
       cma_add_one+0x7d7/0xcd0 drivers/infiniband/core/cma.c:5373
       add_client_context+0x536/0x8b0 drivers/infiniband/core/device.c:728
       enable_device_and_get+0x1e6/0x440 drivers/infiniband/core/device.c:1339
       ib_register_device+0x10d4/0x13e0 drivers/infiniband/core/device.c:1450
       siw_device_register drivers/infiniband/sw/siw/siw_main.c:72 [inline]
       siw_newlink+0x905/0xd60 drivers/infiniband/sw/siw/siw_main.c:439
       nldev_newlink+0x5c0/0x640 drivers/infiniband/core/nldev.c:1795
       rdma_nl_rcv_skb drivers/infiniband/core/netlink.c:239 [inline]
       rdma_nl_rcv+0x6dd/0x9e0 drivers/infiniband/core/netlink.c:259
       netlink_unicast_kernel net/netlink/af_netlink.c:1322 [inline]
       netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1348
       netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1892
       sock_sendmsg_nosec net/socket.c:713 [inline]
       __sock_sendmsg+0x221/0x270 net/socket.c:728
       ____sys_sendmsg+0x52a/0x7e0 net/socket.c:2568
       ___sys_sendmsg net/socket.c:2622 [inline]
       __sys_sendmsg+0x269/0x350 net/socket.c:2654
       do_syscall_x64 arch/x86/entry/common.c:52 [inline]
       do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

other info that might help us debug this:

Chain exists of:
  sk_lock-AF_INET6 --> rtnl_mutex --> lock#7

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(lock#7);
                               lock(rtnl_mutex);
                               lock(lock#7);
  lock(sk_lock-AF_INET6);

 *** DEADLOCK ***

6 locks held by syz.1.43/6067:
 #0: ffffffff9a7bb2b8 (&rdma_nl_types[idx].sem){.+.+}-{4:4}, at: rdma_nl_rcv_msg drivers/infiniband/core/netlink.c:164 [inline]
 #0: ffffffff9a7bb2b8 (&rdma_nl_types[idx].sem){.+.+}-{4:4}, at: rdma_nl_rcv_skb drivers/infiniband/core/netlink.c:239 [inline]
 #0: ffffffff9a7bb2b8 (&rdma_nl_types[idx].sem){.+.+}-{4:4}, at: rdma_nl_rcv+0x32d/0x9e0 drivers/infiniband/core/netlink.c:259
 #1: ffffffff8fa47750 (link_ops_rwsem){++++}-{4:4}, at: nldev_newlink+0x42a/0x640 drivers/infiniband/core/nldev.c:1785
 #2: ffffffff8fa3a4f0 (devices_rwsem){++++}-{4:4}, at: enable_device_and_get+0x12e/0x440 drivers/infiniband/core/device.c:1329
 #3: ffffffff8fa3a7f0 (clients_rwsem){++++}-{4:4}, at: enable_device_and_get+0x196/0x440 drivers/infiniband/core/device.c:1337
 #4: ffff88807e65c5d8 (&device->client_data_rwsem){++++}-{4:4}, at: add_client_context+0x4f4/0x8b0 drivers/infiniband/core/device.c:726
 #5: ffffffff8fa5b588 (lock#7){+.+.}-{4:4}, at: cma_add_one+0x6bc/0xcd0 drivers/infiniband/core/cma.c:5370

stack backtrace:
CPU: 1 UID: 0 PID: 6067 Comm: syz.1.43 Not tainted 6.13.0-syzkaller-04046-g0ad9617c78ac #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
 print_circular_bug+0x13a/0x1b0 kernel/locking/lockdep.c:2076
 check_noncircular+0x36a/0x4a0 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+0x18ef/0x5920 kernel/locking/lockdep.c:3906
 __lock_acquire+0x1397/0x2100 kernel/locking/lockdep.c:5228
 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851
 lock_sock_nested+0x48/0x100 net/core/sock.c:3645
 lock_sock include/net/sock.h:1624 [inline]
 sock_set_reuseaddr+0x17/0x60 net/core/sock.c:788
 siw_create_listen+0x19d/0x11d0 drivers/infiniband/sw/siw/siw_cm.c:1777
 iw_cm_listen+0x15e/0x230 drivers/infiniband/core/iwcm.c:585
 cma_iw_listen drivers/infiniband/core/cma.c:2684 [inline]
 rdma_listen+0x941/0xd60 drivers/infiniband/core/cma.c:3969
 cma_listen_on_dev+0x3e3/0x6f0 drivers/infiniband/core/cma.c:2743
 cma_add_one+0x7d7/0xcd0 drivers/infiniband/core/cma.c:5373
 add_client_context+0x536/0x8b0 drivers/infiniband/core/device.c:728
 enable_device_and_get+0x1e6/0x440 drivers/infiniband/core/device.c:1339
 ib_register_device+0x10d4/0x13e0 drivers/infiniband/core/device.c:1450
 siw_device_register drivers/infiniband/sw/siw/siw_main.c:72 [inline]
 siw_newlink+0x905/0xd60 drivers/infiniband/sw/siw/siw_main.c:439
 nldev_newlink+0x5c0/0x640 drivers/infiniband/core/nldev.c:1795
 rdma_nl_rcv_skb drivers/infiniband/core/netlink.c:239 [inline]
 rdma_nl_rcv+0x6dd/0x9e0 drivers/infiniband/core/netlink.c:259
 netlink_unicast_kernel net/netlink/af_netlink.c:1322 [inline]
 netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1348
 netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1892
 sock_sendmsg_nosec net/socket.c:713 [inline]
 __sock_sendmsg+0x221/0x270 net/socket.c:728
 ____sys_sendmsg+0x52a/0x7e0 net/socket.c:2568
 ___sys_sendmsg net/socket.c:2622 [inline]
 __sys_sendmsg+0x269/0x350 net/socket.c:2654
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ffa5118cd29
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffa4efd5038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007ffa513a6160 RCX: 00007ffa5118cd29
RDX: 0000000000000810 RSI: 0000000020000240 RDI: 000000000000000c
RBP: 00007ffa5120e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007ffa513a6160 R15: 00007fff9b5228a8
 </TASK>
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
lo speed is unknown, defaulting to 1000