syzbot

INFO: task kworker/1:8:5378 blocked for more than 143 seconds.
      Not tainted 6.1.0-rc3-next-20221104-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:8     state:D stack:25872 pid:5378  ppid:2      flags:0x00004000
Workqueue: infiniband ib_cache_event_task
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5211 [inline]
 __schedule+0xb8a/0x5450 kernel/sched/core.c:6523
 schedule+0xda/0x1b0 kernel/sched/core.c:6599
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6658
 __mutex_lock_common kernel/locking/mutex.c:679 [inline]
 __mutex_lock+0xa44/0x1350 kernel/locking/mutex.c:747
 ib_get_eth_speed+0xfe/0x600 drivers/infiniband/core/verbs.c:1895
 rxe_query_port+0x13c/0x2d0 drivers/infiniband/sw/rxe/rxe_verbs.c:38
 __ib_query_port drivers/infiniband/core/device.c:2060 [inline]
 ib_query_port drivers/infiniband/core/device.c:2092 [inline]
 ib_query_port+0x42c/0x8a0 drivers/infiniband/core/device.c:2082
 ib_cache_update.part.0+0xce/0x890 drivers/infiniband/core/cache.c:1487
 ib_cache_update drivers/infiniband/core/cache.c:1561 [inline]
 ib_cache_event_task+0x1ad/0x270 drivers/infiniband/core/cache.c:1561
 process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289
 worker_thread+0x665/0x1080 kernel/workqueue.c:2436
 kthread+0x2e4/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>
INFO: task kworker/u4:14:5905 blocked for more than 143 seconds.
      Not tainted 6.1.0-rc3-next-20221104-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:14   state:D stack:26168 pid:5905  ppid:2      flags:0x00004000
Workqueue: netns cleanup_net
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5211 [inline]
 __schedule+0xb8a/0x5450 kernel/sched/core.c:6523
 schedule+0xda/0x1b0 kernel/sched/core.c:6599
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6658
 __mutex_lock_common kernel/locking/mutex.c:679 [inline]
 __mutex_lock+0xa44/0x1350 kernel/locking/mutex.c:747
 sit_exit_batch_net+0x88/0x750 net/ipv6/sit.c:1881
 ops_exit_list+0x125/0x170 net/core/net_namespace.c:174
 cleanup_net+0x4ea/0xb10 net/core/net_namespace.c:606
 process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289
 worker_thread+0x665/0x1080 kernel/workqueue.c:2436
 kthread+0x2e4/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>
INFO: task kworker/0:9:6891 blocked for more than 143 seconds.
      Not tainted 6.1.0-rc3-next-20221104-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:9     state:D stack:23176 pid:6891  ppid:2      flags:0x00004000
Workqueue: events smc_ib_port_event_work
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5211 [inline]
 __schedule+0xb8a/0x5450 kernel/sched/core.c:6523
 schedule+0xda/0x1b0 kernel/sched/core.c:6599
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6658
 __mutex_lock_common kernel/locking/mutex.c:679 [inline]
 __mutex_lock+0xa44/0x1350 kernel/locking/mutex.c:747
 rxe_query_port+0x129/0x2d0 drivers/infiniband/sw/rxe/rxe_verbs.c:37
 __ib_query_port drivers/infiniband/core/device.c:2060 [inline]
 ib_query_port drivers/infiniband/core/device.c:2092 [inline]
 ib_query_port+0x42c/0x8a0 drivers/infiniband/core/device.c:2082
 smc_ib_remember_port_attr net/smc/smc_ib.c:358 [inline]
 smc_ib_port_event_work+0x148/0xc60 net/smc/smc_ib.c:382
 process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289
 worker_thread+0x665/0x1080 kernel/workqueue.c:2436
 kthread+0x2e4/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>
INFO: task kworker/0:19:11886 blocked for more than 144 seconds.
      Not tainted 6.1.0-rc3-next-20221104-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:19    state:D stack:27224 pid:11886 ppid:2      flags:0x00004000
Workqueue: events switchdev_deferred_process_work
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5211 [inline]
 __schedule+0xb8a/0x5450 kernel/sched/core.c:6523
 schedule+0xda/0x1b0 kernel/sched/core.c:6599
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6658
 __mutex_lock_common kernel/locking/mutex.c:679 [inline]
 __mutex_lock+0xa44/0x1350 kernel/locking/mutex.c:747
 switchdev_deferred_process_work+0xa/0x20 net/switchdev/switchdev.c:75
 process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289
 worker_thread+0x665/0x1080 kernel/workqueue.c:2436
 kthread+0x2e4/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>
INFO: task kworker/0:31:11898 blocked for more than 144 seconds.
      Not tainted 6.1.0-rc3-next-20221104-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:31    state:D stack:26832 pid:11898 ppid:2      flags:0x00004000
Workqueue: events linkwatch_event
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5211 [inline]
 __schedule+0xb8a/0x5450 kernel/sched/core.c:6523
 schedule+0xda/0x1b0 kernel/sched/core.c:6599
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6658
 __mutex_lock_common kernel/locking/mutex.c:679 [inline]
 __mutex_lock+0xa44/0x1350 kernel/locking/mutex.c:747
 linkwatch_event+0xb/0x60 net/core/link_watch.c:263
 process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289
 worker_thread+0x665/0x1080 kernel/workqueue.c:2436
 kthread+0x2e4/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>
INFO: task syz-executor.2:12282 blocked for more than 144 seconds.
      Not tainted 6.1.0-rc3-next-20221104-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2  state:D stack:23312 pid:12282 ppid:8462   flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5211 [inline]
 __schedule+0xb8a/0x5450 kernel/sched/core.c:6523
 schedule+0xda/0x1b0 kernel/sched/core.c:6599
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6658
 __mutex_lock_common kernel/locking/mutex.c:679 [inline]
 __mutex_lock+0xa44/0x1350 kernel/locking/mutex.c:747
 rxe_query_port+0x129/0x2d0 drivers/infiniband/sw/rxe/rxe_verbs.c:37
 __ib_query_port drivers/infiniband/core/device.c:2060 [inline]
 ib_query_port drivers/infiniband/core/device.c:2092 [inline]
 ib_query_port+0x42c/0x8a0 drivers/infiniband/core/device.c:2082
 ib_setup_port_attrs+0x1bd/0x5b0 drivers/infiniband/core/sysfs.c:1431
 add_one_compat_dev drivers/infiniband/core/device.c:969 [inline]
 add_one_compat_dev+0x54f/0x830 drivers/infiniband/core/device.c:920
 add_compat_devs drivers/infiniband/core/device.c:1027 [inline]
 enable_device_and_get+0x313/0x3b0 drivers/infiniband/core/device.c:1338
 ib_register_device drivers/infiniband/core/device.c:1420 [inline]
 ib_register_device+0x86e/0xb40 drivers/infiniband/core/device.c:1366
 rxe_register_device+0x313/0x3c0 drivers/infiniband/sw/rxe/rxe_verbs.c:1101
 rxe_net_add+0x8c/0xe0 drivers/infiniband/sw/rxe/rxe_net.c:520
 rxe_newlink drivers/infiniband/sw/rxe/rxe.c:195 [inline]
 rxe_newlink+0xa9/0xd0 drivers/infiniband/sw/rxe/rxe.c:176
 nldev_newlink+0x32e/0x5c0 drivers/infiniband/core/nldev.c:1717
 rdma_nl_rcv_msg+0x36d/0x690 drivers/infiniband/core/netlink.c:195
 rdma_nl_rcv_skb.constprop.0.isra.0+0x2fc/0x440 drivers/infiniband/core/netlink.c:239
 netlink_unicast_kernel net/netlink/af_netlink.c:1330 [inline]
 netlink_unicast+0x543/0x7f0 net/netlink/af_netlink.c:1356
 netlink_sendmsg+0x917/0xe10 net/netlink/af_netlink.c:1932
 sock_sendmsg_nosec net/socket.c:714 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:734
 ____sys_sendmsg+0x712/0x8c0 net/socket.c:2476
 ___sys_sendmsg+0x110/0x1b0 net/socket.c:2530
 __sys_sendmsg+0xf3/0x1c0 net/socket.c:2559
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f1e1e28b639
RSP: 002b:00007f1e1ef71168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f1e1e3abf80 RCX: 00007f1e1e28b639
RDX: 0000000000000000 RSI: 0000000020000200 RDI: 0000000000000003
RBP: 00007f1e1e2e67e1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc6923df5f R14: 00007f1e1ef71300 R15: 0000000000022000
 </TASK>
INFO: task syz-executor.3:12293 blocked for more than 144 seconds.
      Not tainted 6.1.0-rc3-next-20221104-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3  state:D stack:27184 pid:12293 ppid:5271   flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5211 [inline]
 __schedule+0xb8a/0x5450 kernel/sched/core.c:6523
 schedule+0xda/0x1b0 kernel/sched/core.c:6599
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6658
 __mutex_lock_common kernel/locking/mutex.c:679 [inline]
 __mutex_lock+0xa44/0x1350 kernel/locking/mutex.c:747
 rtnl_lock net/core/rtnetlink.c:74 [inline]
 rtnetlink_rcv_msg+0x3e5/0xca0 net/core/rtnetlink.c:6094
 netlink_rcv_skb+0x161/0x440 net/netlink/af_netlink.c:2562
 netlink_unicast_kernel net/netlink/af_netlink.c:1330 [inline]
 netlink_unicast+0x543/0x7f0 net/netlink/af_netlink.c:1356
 netlink_sendmsg+0x917/0xe10 net/netlink/af_netlink.c:1932
 sock_sendmsg_nosec net/socket.c:714 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:734
 ____sys_sendmsg+0x712/0x8c0 net/socket.c:2476
 ___sys_sendmsg+0x110/0x1b0 net/socket.c:2530
 __sys_sendmsg+0xf3/0x1c0 net/socket.c:2559
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f5ccc68b639
RSP: 002b:00007f5ccd350168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f5ccc7ac050 RCX: 00007f5ccc68b639
RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000007
RBP: 00007f5ccc6e67e1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe48715e0f R14: 00007f5ccd350300 R15: 0000000000022000
 </TASK>

Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
 #0: ffffffff8bf88270 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/13:
 #0: ffffffff8bf87f70 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507
3 locks held by kworker/1:1/26:
 #0: ffff888149e96538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff888149e96538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff888149e96538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff888149e96538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff888149e96538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff888149e96538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260
 #1: ffffc90000a1fda8 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264
 #2: ffffffff8d7c2528 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0xe/0x20 net/ipv6/addrconf.c:4624
1 lock held by khungtaskd/28:
 #0: ffffffff8bf88dc0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6494
2 locks held by getty/4915:
 #0: ffff888027dd9098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244
 #1: ffffc900015b02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef0/0x13e0 drivers/tty/n_tty.c:2177
4 locks held by kworker/1:8/5378:
 #0: ffff888145534138 ((wq_completion)infiniband){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff888145534138 ((wq_completion)infiniband){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff888145534138 ((wq_completion)infiniband){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff888145534138 ((wq_completion)infiniband){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff888145534138 ((wq_completion)infiniband){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff888145534138 ((wq_completion)infiniband){+.+.}-{0:0}, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260
 #1: ffffc90005137da8 ((work_completion)(&work->work)#2){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264
 #2: ffff888051415148 (&rxe->usdev_lock){+.+.}-{3:3}, at: rxe_query_port+0x129/0x2d0 drivers/infiniband/sw/rxe/rxe_verbs.c:37
 #3: ffffffff8d7c2528 (rtnl_mutex){+.+.}-{3:3}, at: ib_get_eth_speed+0xfe/0x600 drivers/infiniband/core/verbs.c:1895
2 locks held by kworker/u4:9/5682:
4 locks held by kworker/u4:14/5905:
 #0: ffff8880119d7938 ((wq_completion)netns){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff8880119d7938 ((wq_completion)netns){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff8880119d7938 ((wq_completion)netns){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff8880119d7938 ((wq_completion)netns){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff8880119d7938 ((wq_completion)netns){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff8880119d7938 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260
 #1: ffffc9000a077da8 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264
 #2: ffffffff8d7ae910 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x9b/0xb10 net/core/net_namespace.c:568
 #3: ffffffff8d7c2528 (rtnl_mutex){+.+.}-{3:3}, at: sit_exit_batch_net+0x88/0x750 net/ipv6/sit.c:1881
3 locks held by kworker/0:9/6891:
 #0: ffff888011870d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff888011870d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff888011870d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff888011870d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff888011870d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff888011870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260
 #1: ffffc900033bfda8 ((work_completion)(&smcibdev->port_event_work)){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264
 #2: ffff888051415148 (&rxe->usdev_lock){+.+.}-{3:3}, at: rxe_query_port+0x129/0x2d0 drivers/infiniband/sw/rxe/rxe_verbs.c:37
3 locks held by kworker/0:14/10128:
 #0: ffff888149e96538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff888149e96538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff888149e96538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff888149e96538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff888149e96538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff888149e96538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260
 #1: ffffc900092dfda8 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264
 #2: ffffffff8d7c2528 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0xe/0x20 net/ipv6/addrconf.c:4624
3 locks held by kworker/0:19/11886:
 #0: ffff888011870d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff888011870d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff888011870d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff888011870d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff888011870d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff888011870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260
 #1: ffffc9000568fda8 (deferred_process_work){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264
 #2: ffffffff8d7c2528 (rtnl_mutex){+.+.}-{3:3}, at: switchdev_deferred_process_work+0xa/0x20 net/switchdev/switchdev.c:75
3 locks held by kworker/0:31/11898:
 #0: ffff888011870d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff888011870d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff888011870d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff888011870d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff888011870d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff888011870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260
 #1: ffffc9000587fda8 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264
 #2: ffffffff8d7c2528 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xb/0x60 net/core/link_watch.c:263
6 locks held by syz-executor.2/12282:
 #0: ffffffff91575d98 (&rdma_nl_types[idx].sem){.+.+}-{3:3}, at: rdma_nl_rcv_msg+0x161/0x690 drivers/infiniband/core/netlink.c:164
 #1: ffffffff8d4dcdd0 (link_ops_rwsem){++++}-{3:3}, at: nldev_newlink+0x281/0x5c0 drivers/infiniband/core/nldev.c:1707
 #2: ffffffff8d4cc130 (devices_rwsem){++++}-{3:3}, at: enable_device_and_get+0xfc/0x3b0 drivers/infiniband/core/device.c:1322
 #3: ffffffff8d4cbeb0 (rdma_nets_rwsem){++++}-{3:3}, at: add_compat_devs drivers/infiniband/core/device.c:1025 [inline]
 #3: ffffffff8d4cbeb0 (rdma_nets_rwsem){++++}-{3:3}, at: enable_device_and_get+0x2a8/0x3b0 drivers/infiniband/core/device.c:1338
 #4: ffff888051414f18 (&device->compat_devs_mutex){+.+.}-{3:3}, at: add_one_compat_dev drivers/infiniband/core/device.c:943 [inline]
 #4: ffff888051414f18 (&device->compat_devs_mutex){+.+.}-{3:3}, at: add_one_compat_dev+0xea/0x830 drivers/infiniband/core/device.c:920
 #5: ffff888051415148 (&rxe->usdev_lock){+.+.}-{3:3}, at: rxe_query_port+0x129/0x2d0 drivers/infiniband/sw/rxe/rxe_verbs.c:37
1 lock held by syz-executor.3/12288:
 #0: ffffffff8d7c2528 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline]
 #0: ffffffff8d7c2528 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e5/0xca0 net/core/rtnetlink.c:6094
1 lock held by syz-executor.3/12293:
 #0: ffffffff8d7c2528 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline]
 #0: ffffffff8d7c2528 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e5/0xca0 net/core/rtnetlink.c:6094
1 lock held by syz-executor.5/12331:
 #0: ffffffff8d7c2528 (rtnl_mutex){+.+.}-{3:3}, at: __netlink_dump_start+0x16a/0x900 net/netlink/af_netlink.c:2355
1 lock held by syz-executor.2/12336:
 #0: ffffffff8d7c2528 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline]
 #0: ffffffff8d7c2528 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e5/0xca0 net/core/rtnetlink.c:6094
1 lock held by syz-executor.3/12342:
 #0: ffffffff8d7c2528 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline]
 #0: ffffffff8d7c2528 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e5/0xca0 net/core/rtnetlink.c:6094
1 lock held by syz-executor.2/12349:
 #0: ffffffff8d7c2528 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline]
 #0: ffffffff8d7c2528 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e5/0xca0 net/core/rtnetlink.c:6094
1 lock held by syz-executor.3/12354:
 #0: ffffffff8d7c2528 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline]
 #0: ffffffff8d7c2528 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e5/0xca0 net/core/rtnetlink.c:6094

=============================================

NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.1.0-rc3-next-20221104-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
 nmi_cpu_backtrace.cold+0x24/0x18a lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x32f/0x3c0 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline]
 watchdog+0xc71/0xfc0 kernel/hung_task.c:377
 kthread+0x2e4/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:51 [inline]
NMI backtrace for cpu 0 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:89 [inline]
NMI backtrace for cpu 0 skipped: idling at acpi_safe_halt drivers/acpi/processor_idle.c:112 [inline]
NMI backtrace for cpu 0 skipped: idling at acpi_idle_do_entry+0x1fd/0x2a0 drivers/acpi/processor_idle.c:572