rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1):
------------[ cut here ]------------
WARNING: CPU: 0 PID: 9669 at kernel/sched/core.c:3013 rq_unlock kernel/sched/sched.h:1325 [inline]
WARNING: CPU: 0 PID: 9669 at kernel/sched/core.c:3013 try_invoke_on_locked_down_task+0x12d/0x270 kernel/sched/core.c:3019
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 9669 Comm: syz-executor.4 Not tainted 5.8.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1f0/0x31e lib/dump_stack.c:118
 panic+0x264/0x7a0 kernel/panic.c:231
 __warn+0x227/0x250 kernel/panic.c:600
 report_bug+0x1b1/0x2e0 lib/bug.c:198
 handle_bug+0x42/0x80 arch/x86/kernel/traps.c:234
 exc_invalid_op+0x16/0x40 arch/x86/kernel/traps.c:254
 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:536
RIP: 0010:try_invoke_on_locked_down_task+0x12d/0x270 kernel/sched/sched.h:1325
Code: f8 48 c1 e8 03 42 8a 04 38 84 c0 0f 85 10 01 00 00 8b 74 24 18 48 89 ef e8 d0 46 09 00 4c 89 ef e8 68 dc d9 06 e9 a4 00 00 00 <0f> 0b e9 2b ff ff ff 48 c7 c1 34 30 8f 89 80 e1 07 80 c1 03 38 c1
RSP: 0018:ffffc90000007c50 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffffffff894ff280 RCX: b179775f7cb7e000
RDX: ffffc90000007d00 RSI: ffffffff8162d000 RDI: ffff8880193f4340
RBP: ffffffff8162d000 R08: ffffffff817abb54 R09: fffffbfff129f889
R10: fffffbfff129f889 R11: 0000000000000000 R12: 0000000000000000
R13: ffffffff894ff280 R14: ffff8880193f4340 R15: dffffc0000000000
 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:3637 [inline]
 rcu_sched_clock_irq+0x12bc/0x1eb0 kernel/rcu/tree.c:2519
 update_process_times+0x130/0x1b0 kernel/time/timer.c:1710
 tick_sched_handle kernel/time/tick-sched.c:176 [inline]
 tick_sched_timer+0x25e/0x410 kernel/time/tick-sched.c:1328
 __run_hrtimer kernel/time/hrtimer.c:1524 [inline]
 __hrtimer_run_queues+0x42d/0x930 kernel/time/hrtimer.c:1588
 hrtimer_interrupt+0x373/0xd60 kernel/time/hrtimer.c:1650
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1080 [inline]
 __sysvec_apic_timer_interrupt+0xf0/0x260 arch/x86/kernel/apic/apic.c:1097
 asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:706
 </IRQ>
 __run_on_irqstack arch/x86/include/asm/irq_stack.h:22 [inline]
 run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:48 [inline]
 sysvec_apic_timer_interrupt+0x94/0xf0 arch/x86/kernel/apic/apic.c:1091
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:581
RIP: 0010:sctp_bind_addr_state+0xa9/0x1b0 net/sctp/bind_addr.c:402
Code: 03 48 89 04 24 66 90 66 2e 0f 1f 84 00 00 00 00 00 4c 8d 6b 3d 4c 89 e8 48 c1 e8 03 42 0f b6 04 30 84 c0 75 79 41 0f b6 6d 00 <31> ff 89 ee e8 6e 85 d7 f9 85 ed 74 3a 48 8b 04 24 42 80 3c 30 00
RSP: 0018:ffffc90017bb7bb0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff888094756f00 RCX: 0000000000040000
RDX: ffffc90010ff8000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: 0000000000000001 R08: ffffffff879d7041 R09: ffffffff873bd854
R10: 0000000000000002 R11: ffff8880193f4340 R12: ffffffff89848cf8
R13: ffff888094756f3d R14: dffffc0000000000 R15: ffff888095a62098
 sctp_copy_local_addr_list+0x228/0x3e0 net/sctp/protocol.c:162
 sctp_bind_addr_copy+0xad/0x3b0 net/sctp/bind_addr.c:56
 sctp_connect_new_asoc+0x271/0x600 net/sctp/socket.c:1078
 __sctp_connect+0x54d/0x11e0 net/sctp/socket.c:1180
 sctp_connect net/sctp/socket.c:4678 [inline]
 sctp_inet_connect+0x11b/0x190 net/sctp/socket.c:4693
 __sys_connect_file net/socket.c:1853 [inline]
 __sys_connect+0x2da/0x360 net/socket.c:1870
 __do_sys_connect net/socket.c:1881 [inline]
 __se_sys_connect net/socket.c:1878 [inline]
 __x64_sys_connect+0x76/0x80 net/socket.c:1878
 do_syscall_64+0x31/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45ce69
Code: 2d b6 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 fb b5 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f3bd7026c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: ffffffffffffffda RBX: 0000000000002300 RCX: 000000000045ce69
RDX: 000000000000001c RSI: 0000000020000080 RDI: 0000000000000005
RBP: 000000000118bf60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118bf2c
R13: 00007ffcd8a3b7df R14: 00007f3bd70279c0 R15: 000000000118bf2c
Kernel Offset: disabled
Rebooting in 86400 seconds..