INFO: task syz-executor.3:1651 blocked for more than 143 seconds.
      Not tainted 5.7.0-rc5-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.3  D29864  1651   9812 0x00000004
Call Trace:
 context_switch kernel/sched/core.c:3367 [inline]
 __schedule+0x937/0x1ff0 kernel/sched/core.c:4083
 __sched_text_start+0x8/0x8
 atomic_try_cmpxchg include/asm-generic/atomic-instrumented.h:694 [inline]
 queued_spin_lock include/asm-generic/qspinlock.h:78 [inline]
 do_raw_spin_lock+0x129/0x2e0 kernel/locking/spinlock_debug.c:113
 rwlock_bug.part.0+0x90/0x90 include/linux/sched.h:1329
 schedule+0xd0/0x2a0 kernel/sched/core.c:4158
 rwsem_down_write_slowpath+0x706/0xf90 kernel/locking/rwsem.c:1235
 rwsem_mark_wake+0x8d0/0x8d0 include/linux/compiler.h:199
 lock_acquire+0x1f2/0x8f0 kernel/locking/lockdep.c:4934
 register_netdevice_notifier+0x1e/0x270 net/core/dev.c:1729
 pcpu_region_overlap mm/percpu.c:564 [inline]
 pcpu_block_update_hint_alloc+0x742/0xb00 mm/percpu.c:877
 atomic64_cmpxchg include/asm-generic/atomic-instrumented.h:1463 [inline]
 atomic_long_cmpxchg_release include/asm-generic/atomic-long.h:424 [inline]
 __mutex_unlock_slowpath+0xe2/0x660 kernel/locking/mutex.c:1249
 wait_for_completion+0x270/0x270
 __down_write kernel/locking/rwsem.c:1389 [inline]
 down_write+0x137/0x150 kernel/locking/rwsem.c:1532
 __down_write kernel/locking/rwsem.c:1389 [inline]
 down_write+0x137/0x150 kernel/locking/rwsem.c:1532
 __down_timeout+0x2d0/0x2d0
 pcpu_alloc+0x128/0x13b0 mm/percpu.c:1740
 register_netdevice_notifier+0x1e/0x270 net/core/dev.c:1729
 raw_init+0x296/0x340 net/can/raw.c:339
 raw_sock_no_ioctlcmd+0x10/0x10 net/can/raw.c:843
 can_create+0x27c/0x500 net/can/af_can.c:168
 __sock_create+0x3cb/0x730 net/socket.c:1433
 sock_create net/socket.c:1484 [inline]
 __sys_socketpair+0x1be/0x560 net/socket.c:1584
 __ia32_sys_socket+0xb0/0xb0 net/socket.c:1533
 __do_sys_clock_gettime kernel/time/posix-timers.c:1094 [inline]
 __se_sys_clock_gettime kernel/time/posix-timers.c:1082 [inline]
 __x64_sys_clock_gettime+0x165/0x240 kernel/time/posix-timers.c:1082
 __ia32_sys_clock_settime+0x260/0x260 kernel/time/posix-timers.c:1410
 __do_sys_socketpair net/socket.c:1637 [inline]
 __se_sys_socketpair net/socket.c:1634 [inline]
 __x64_sys_socketpair+0x93/0xf0 net/socket.c:1634
 do_syscall_64+0xf6/0x7d0 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xb3
INFO: task syz-executor.3:1685 blocked for more than 143 seconds.
      Not tainted 5.7.0-rc5-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.3  D29864  1685   9812 0x00000004
Call Trace:
 context_switch kernel/sched/core.c:3367 [inline]
 __schedule+0x937/0x1ff0 kernel/sched/core.c:4083
 __sched_text_start+0x8/0x8
 atomic_try_cmpxchg include/asm-generic/atomic-instrumented.h:694 [inline]
 queued_spin_lock include/asm-generic/qspinlock.h:78 [inline]
 do_raw_spin_lock+0x129/0x2e0 kernel/locking/spinlock_debug.c:113
 rwsem_optimistic_spin+0x550/0x550 include/linux/compiler.h:226
 rwlock_bug.part.0+0x90/0x90 include/linux/sched.h:1329
 schedule+0xd0/0x2a0 kernel/sched/core.c:4158
 rwsem_down_write_slowpath+0x706/0xf90 kernel/locking/rwsem.c:1235
 rwsem_mark_wake+0x8d0/0x8d0 include/linux/compiler.h:199
 lock_acquire+0x1f2/0x8f0 kernel/locking/lockdep.c:4934
 register_netdevice_notifier+0x1e/0x270 net/core/dev.c:1729
 atomic64_cmpxchg include/asm-generic/atomic-instrumented.h:1463 [inline]
 atomic_long_cmpxchg_release include/asm-generic/atomic-long.h:424 [inline]
 __mutex_unlock_slowpath+0xe2/0x660 kernel/locking/mutex.c:1249
 wait_for_completion+0x270/0x270
 __down_write kernel/locking/rwsem.c:1389 [inline]
 down_write+0x137/0x150 kernel/locking/rwsem.c:1532
 __down_write kernel/locking/rwsem.c:1389 [inline]
 down_write+0x137/0x150 kernel/locking/rwsem.c:1532
 __down_timeout+0x2d0/0x2d0
 pcpu_alloc+0x128/0x13b0 mm/percpu.c:1740
 register_netdevice_notifier+0x1e/0x270 net/core/dev.c:1729
 raw_init+0x296/0x340 net/can/raw.c:339
 raw_sock_no_ioctlcmd+0x10/0x10 net/can/raw.c:843
 can_create+0x27c/0x500 net/can/af_can.c:168
 __sock_create+0x3cb/0x730 net/socket.c:1433
 sock_create net/socket.c:1484 [inline]
 __sys_socketpair+0x1be/0x560 net/socket.c:1584
 __ia32_sys_socket+0xb0/0xb0 net/socket.c:1533
 __do_sys_clock_gettime kernel/time/posix-timers.c:1094 [inline]
 __se_sys_clock_gettime kernel/time/posix-timers.c:1082 [inline]
 __x64_sys_clock_gettime+0x165/0x240 kernel/time/posix-timers.c:1082
 __ia32_sys_clock_settime+0x260/0x260 kernel/time/posix-timers.c:1410
 __do_sys_socketpair net/socket.c:1637 [inline]
 __se_sys_socketpair net/socket.c:1634 [inline]
 __x64_sys_socketpair+0x93/0xf0 net/socket.c:1634
 do_syscall_64+0xf6/0x7d0 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xb3
INFO: lockdep is turned off.
NMI backtrace for cpu 0
CPU: 0 PID: 1143 Comm: khungtaskd Not tainted 5.7.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x188/0x20d lib/dump_stack.c:118
 nmi_cpu_backtrace.cold+0x70/0xb1 lib/nmi_backtrace.c:101
 lapic_can_unplug_cpu.cold+0x3b/0x3b
 nmi_trigger_cpumask_backtrace+0x231/0x27e lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:205 [inline]
 watchdog+0xa8c/0x1010 kernel/hung_task.c:289
 reset_hung_task_detector+0x30/0x30 kernel/hung_task.c:243
 kthread+0x388/0x470 kernel/kthread.c:268
 kthread_mod_delayed_work+0x1a0/0x1a0 kernel/kthread.c:1090
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:351
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 25 Comm: kworker/u4:2 Not tainted 5.7.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: krdsd rds_connect_worker
RIP: 0010:inet_csk_bind_conflict+0xad/0x590 net/ipv4/inet_connection_sock.c:144
Code: e4 82 ff 48 8d 7b 40 48 89 fa 89 44 24 24 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 c6 04 00 00 48 8b 5b 40 <48> 85 db 0f 84 04 04 00 00 e8 15 cc dc fa 48 83 eb 18 0f 84 f5 03
RSP: 0018:ffffc90000e17998 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: ffff8880499195f8 RCX: 1ffffffff1513872
RDX: 1ffff11007994ac8 RSI: ffffffff8178b685 RDI: ffff88803cca5640
RBP: ffff88805df3ae00 R08: ffff8880a903e040 R09: ffffed100bbe7637
R10: ffff88805df3b1b3 R11: ffffed100bbe7636 R12: 0000000000000000
R13: ffff88805df3ae13 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f08952e0000 CR3: 00000000a1158000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 inet_csk_find_open_port net/ipv4/inet_connection_sock.c:228 [inline]
 inet_csk_get_port+0xd83/0x2590 net/ipv4/inet_connection_sock.c:312
 inet_csk_listen_stop+0xb20/0xb20 net/ipv4/inet_connection_sock.c:1041
 trace_hardirqs_on+0x55/0x220 kernel/trace/trace_preemptirq.c:31
 __inet_bind+0x5b2/0xbd0 net/ipv4/af_inet.c:524
 inet_bind+0xf3/0x160 net/ipv4/af_inet.c:453
 rds_tcp_conn_path_connect+0x536/0x880 net/rds/tcp_connect.c:144
 rds_tcp_state_change+0x270/0x270 net/rds/tcp_connect.c:70
 lock_release+0x800/0x800 kernel/locking/lockdep.c:4689
 lock_downgrade+0x840/0x840 kernel/locking/lockdep.c:4579
 rds_connect_worker+0x1a5/0x2c0 net/rds/threads.c:176
 process_one_work+0x965/0x16a0 kernel/workqueue.c:2268
 lock_release+0x800/0x800 kernel/locking/lockdep.c:4689
 pwq_dec_nr_in_flight+0x310/0x310 kernel/workqueue.c:1198
 rwlock_bug.part.0+0x90/0x90 include/linux/sched.h:1329
 worker_thread+0x96/0xe20 kernel/workqueue.c:2414
 process_one_work+0x16a0/0x16a0 kernel/workqueue.c:2273
 kthread+0x388/0x470 kernel/kthread.c:268
 kthread_mod_delayed_work+0x1a0/0x1a0 kernel/kthread.c:1090
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:351