rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P11457/1:b..l
	(detected by 1, t=10502 jiffies, g=189097, q=1033)
task:syz.7.11931     state:R  running task     stack:25008 pid:11457 ppid:  7783 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5049 [inline]
 __schedule+0x11c3/0x4350 kernel/sched/core.c:6395
 preempt_schedule_irq+0xbb/0x160 kernel/sched/core.c:6799
 irqentry_exit+0x63/0x70 kernel/entry/common.c:432
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:sctp_v6_cmp_addr+0x8f/0xc0 net/sctp/ipv6.c:664
Code: 38 84 c0 75 41 0f b7 1b 44 0f b7 f5 44 89 f7 89 de e8 55 de 53 f8 31 ed 66 41 39 de 40 0f 94 c5 eb 05 e8 64 dd 53 f8 89 e8 5b <41> 5e 41 5f 5d c3 44 89 f1 80 e1 07 fe c1 38 c1 7c b1 4c 89 f7 e8
RSP: 0018:ffffc9000351f618 EFLAGS: 00000283
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000080000
RDX: ffffc90003f31000 RSI: 000000000000bf2b RDI: 000000000000bf2c
RBP: 0000000000000000 R08: ffff8880267ebb80 R09: 0000000000000002
R10: 000000000000000a R11: 0000000000000002 R12: ffffffff8d63a010
R13: ffff88805f8116bd R14: ffff88805f8116a0 R15: 0000000000000000
 sctp_bind_addr_state+0xc8/0x1a0 net/sctp/bind_addr.c:413
 sctp_copy_local_addr_list+0x2ad/0x4c0 net/sctp/protocol.c:163
 sctp_bind_addr_copy+0xaf/0x3c0 net/sctp/bind_addr.c:56
 sctp_connect_new_asoc+0x2f5/0x6a0 net/sctp/socket.c:1093
 sctp_sendmsg_new_asoc net/sctp/socket.c:1689 [inline]
 sctp_sendmsg+0x15e1/0x2940 net/sctp/socket.c:2012
 sock_sendmsg_nosec net/socket.c:706 [inline]
 __sock_sendmsg net/socket.c:718 [inline]
 ____sys_sendmsg+0x5be/0x8f0 net/socket.c:2446
 ___sys_sendmsg+0x236/0x2e0 net/socket.c:2500
 __sys_sendmsg net/socket.c:2529 [inline]
 __do_sys_sendmsg net/socket.c:2538 [inline]
 __se_sys_sendmsg+0x1b7/0x2a0 net/socket.c:2536
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f0b570b4e59
RSP: 002b:00007f0b5530d028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f0b5733cfa0 RCX: 00007f0b570b4e59
RDX: 0000000000000041 RSI: 0000200000002dc0 RDI: 0000000000000005
RBP: 00007f0b5714ae6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0b5733d038 R14: 00007f0b5733cfa0 R15: 00007ffeaaceac18
 </TASK>