rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1):
------------[ cut here ]------------
IRQs not enabled as expected
WARNING: CPU: 0 PID: 20579 at kernel/sched/core.c:2698 try_invoke_on_locked_down_task+0x2bf/0x370 kernel/sched/core.c:2698
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 20579 Comm: syz-executor.1 Not tainted 5.8.0-rc4-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+0x18f/0x20d lib/dump_stack.c:118
 panic+0x2e3/0x75c kernel/panic.c:231
 __warn.cold+0x20/0x45 kernel/panic.c:600
 report_bug+0x1bd/0x210 lib/bug.c:198
 handle_bug+0x38/0x90 arch/x86/kernel/traps.c:235
 exc_invalid_op+0x13/0x40 arch/x86/kernel/traps.c:255
 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:542
RIP: 0010:try_invoke_on_locked_down_task+0x2bf/0x370 kernel/sched/core.c:2698
Code: ff d4 41 89 c6 e9 18 ff ff ff 80 3d e6 f5 58 09 00 0f 85 6f fe ff ff 48 c7 c7 80 41 4b 88 c6 05 d2 f5 58 09 01 e8 b3 47 f4 ff <0f> 0b e9 55 fe ff ff 4c 89 04 24 4c 89 ee 48 89 ef 41 ff d4 4c 8b
RSP: 0018:ffffc90000007bd8 EFLAGS: 00010086
RAX: 0000000000000000 RBX: 1ffff92000000f7d RCX: 0000000000000000
RDX: ffff8880257ec540 RSI: ffffffff815d4f87 RDI: fffff52000000f6d
RBP: ffff88808ac8c140 R08: 0000000000000001 R09: ffff8880ae620fcb
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff8160c5c0
R13: ffffc90000007d00 R14: ffff8880257ec540 R15: ffff8880ae636c00
 rcu_print_task_stall kernel/rcu/tree_stall.h:269 [inline]
 print_other_cpu_stall kernel/rcu/tree_stall.h:477 [inline]
 check_cpu_stall kernel/rcu/tree_stall.h:636 [inline]
 rcu_pending kernel/rcu/tree.c:3489 [inline]
 rcu_sched_clock_irq.cold+0x92e/0xccc kernel/rcu/tree.c:2504
 update_process_times+0x25/0x60 kernel/time/timer.c:1726
 tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:176
 tick_sched_timer+0x108/0x290 kernel/time/tick-sched.c:1320
 __run_hrtimer kernel/time/hrtimer.c:1520 [inline]
 __hrtimer_run_queues+0x1d5/0xfc0 kernel/time/hrtimer.c:1584
 hrtimer_interrupt+0x32a/0x930 kernel/time/hrtimer.c:1646
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1080 [inline]
 __sysvec_apic_timer_interrupt+0x142/0x5e0 arch/x86/kernel/apic/apic.c:1097
 asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:711
 </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+0xe0/0x120 arch/x86/kernel/apic/apic.c:1091
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:587
RIP: 0010:ipv6_addr_equal include/net/ipv6.h:579 [inline]
RIP: 0010:__sctp_v6_cmp_addr+0x25a/0x520 net/sctp/ipv6.c:591
Code: 02 00 00 48 8d 7d 08 4c 8b 73 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 5c 02 00 00 48 8d 7b 10 <4c> 33 75 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80
RSP: 0018:ffffc90007d77868 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: ffff88802e0c6420 RCX: ffffc90004d09000
RDX: 1ffff92000faef2a RSI: ffffffff8760d4f4 RDI: ffff88802e0c6430
RBP: ffffc90007d77948 R08: 0000000000000001 R09: ffff88801f0461bb
R10: 000000000000000a R11: 0000000000000000 R12: 000000000000000a
R13: ffff88802e0c6428 R14: 00000000000080fe R15: 0000000000000001
 sctp_v6_cmp_addr+0x1a/0xd0 net/sctp/ipv6.c:609
 sctp_bind_addr_state+0x103/0x1d0 net/sctp/bind_addr.c:404
 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/0x470 net/sctp/bind_addr.c:56
 sctp_connect_new_asoc+0x1cd/0x770 net/sctp/socket.c:1095
 sctp_sendmsg_new_asoc net/sctp/socket.c:1701 [inline]
 sctp_sendmsg+0x1377/0x1cf0 net/sctp/socket.c:2011
 inet_sendmsg+0x99/0xe0 net/ipv4/af_inet.c:814
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:672
 __sys_sendto+0x21c/0x320 net/socket.c:1995
 __do_sys_sendto net/socket.c:2007 [inline]
 __se_sys_sendto net/socket.c:2003 [inline]
 __x64_sys_sendto+0xdd/0x1b0 net/socket.c:2003
 do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:384
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45cba9
Code: Bad RIP value.
RSP: 002b:00007f0daf370c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 0000000000503b00 RCX: 000000000045cba9
RDX: 000000000000004e RSI: 00000000200004c0 RDI: 0000000000000003
RBP: 000000000078c0e0 R08: 000000002005ffe4 R09: 000000000000001c
R10: 0000000000008000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000a78 R14: 00000000004cd52e R15: 00007f0daf3716d4
Kernel Offset: disabled
Rebooting in 86400 seconds..