rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1):
------------[ cut here ]------------
WARNING: CPU: 1 PID: 28009 at kernel/sched/core.c:3009 try_invoke_on_locked_down_task+0x18c/0x300 kernel/sched/core.c:3009
Modules linked in:
CPU: 1 PID: 28009 Comm: syz-executor.3 Not tainted 5.10.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:try_invoke_on_locked_down_task+0x18c/0x300 kernel/sched/core.c:3009
Code: 00 00 00 0f 85 34 01 00 00 48 83 c4 70 44 89 f0 5b 5d 41 5c 41 5d 41 5e 41 5f c3 65 8b 05 28 88 b5 7e 85 c0 0f 85 15 ff ff ff <0f> 0b e9 0e ff ff ff 48 8d 74 24 30 48 89 ef 49 c7 c6 00 4d 03 00
RSP: 0018:ffffc90000d90be8 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 1ffff920001b217f RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff815cb860 RDI: ffff88802c81cec0
RBP: ffff88802c81cec0 R08: 0000000000000033 R09: ffff8880b9f2005b
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff815cb860
R13: ffffc90000d90d10 R14: ffff88802c81cec0 R15: 0000000000000000
FS:  00007f3deb3a0700(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f98ecb70db8 CR3: 0000000086760000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 rcu_print_task_stall kernel/rcu/tree_stall.h:267 [inline]
 print_other_cpu_stall kernel/rcu/tree_stall.h:475 [inline]
 check_cpu_stall kernel/rcu/tree_stall.h:634 [inline]
 rcu_pending kernel/rcu/tree.c:3694 [inline]
 rcu_sched_clock_irq.cold+0x97e/0xded kernel/rcu/tree.c:2567
 update_process_times+0x77/0xd0 kernel/time/timer.c:1709
 tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:176
 tick_sched_timer+0x1d1/0x2a0 kernel/time/tick-sched.c:1328
 __run_hrtimer kernel/time/hrtimer.c:1519 [inline]
 __hrtimer_run_queues+0x1ce/0xea0 kernel/time/hrtimer.c:1583
 hrtimer_interrupt+0x334/0x940 kernel/time/hrtimer.c:1645
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1080 [inline]
 __sysvec_apic_timer_interrupt+0x146/0x540 arch/x86/kernel/apic/apic.c:1097
 asm_call_irq_on_stack+0xf/0x20
 </IRQ>
 __run_sysvec_on_irqstack arch/x86/include/asm/irq_stack.h:37 [inline]
 run_sysvec_on_irqstack_cond arch/x86/include/asm/irq_stack.h:89 [inline]
 sysvec_apic_timer_interrupt+0xbd/0x100 arch/x86/kernel/apic/apic.c:1091
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:631
RIP: 0010:sctp_bind_addr_state+0xbf/0x1d0 net/sctp/bind_addr.c:402
Code: fc ff df 49 89 c7 48 89 44 24 08 49 c1 ef 03 49 8d 04 2f 48 89 04 24 e8 df 4b 53 f9 48 8d 7b 3d 48 89 f8 48 89 fa 48 c1 e8 03 <83> e2 07 0f b6 04 28 38 d0 7f 08 84 c0 0f 85 ba 00 00 00 44 0f b6
RSP: 0018:ffffc900170d75a8 EFLAGS: 00000a03
RAX: 1ffff1101051f037 RBX: ffff8880828f8180 RCX: ffffc9000f298000
RDX: ffff8880828f81bd RSI: ffffffff881cbd41 RDI: ffff8880828f81bd
RBP: dffffc0000000000 R08: 0000000000000001 R09: ffff88806b4adb3b
R10: 0000000000000000 R11: 0000000000000000 R12: ffffc900170d7638
R13: ffff88807bf0a098 R14: ffffffff8cbd8280 R15: 0000000000000000
 sctp_copy_local_addr_list+0x217/0x4e0 net/sctp/protocol.c:162
 sctp_copy_one_addr net/sctp/bind_addr.c:457 [inline]
 sctp_bind_addr_copy+0xde/0x460 net/sctp/bind_addr.c:56
 sctp_connect_new_asoc+0x1cd/0x770 net/sctp/socket.c:1078
 sctp_sendmsg_new_asoc net/sctp/socket.c:1676 [inline]
 sctp_sendmsg+0x13bc/0x1d30 net/sctp/socket.c:1986
 inet_sendmsg+0x99/0xe0 net/ipv4/af_inet.c:817
 sock_sendmsg_nosec net/socket.c:651 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:671
 ____sys_sendmsg+0x331/0x810 net/socket.c:2353
 ___sys_sendmsg+0xf3/0x170 net/socket.c:2407
 __sys_sendmmsg+0x195/0x470 net/socket.c:2497
 __do_sys_sendmmsg net/socket.c:2526 [inline]
 __se_sys_sendmmsg net/socket.c:2523 [inline]
 __x64_sys_sendmmsg+0x99/0x100 net/socket.c:2523
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45deb9
Code: 0d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f3deb39fc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 0000000000028040 RCX: 000000000045deb9
RDX: 0000000000000001 RSI: 00000000200002c0 RDI: 0000000000000003
RBP: 000000000118bf68 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118bf2c
R13: 00007fff4d5a630f R14: 00007f3deb3a09c0 R15: 000000000118bf2c