rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-...0: (1 GPs behind) idle=3f1/1/0x4000000000000000 softirq=148950/148951 fqs=5218 
	(detected by 0, t=10502 jiffies, g=232549, q=2021)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 15549 Comm: syz-executor.2 Not tainted 5.16.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__run_hrtimer kernel/time/hrtimer.c:1666 [inline]
RIP: 0010:__hrtimer_run_queues+0x4ea/0xe50 kernel/time/hrtimer.c:1749
Code: 03 0f b6 04 02 84 c0 74 08 3c 03 0f 8e 75 08 00 00 41 83 45 10 01 41 83 45 10 01 31 d2 31 c9 48 89 df 4c 89 ee e8 f6 d6 ff ff <48> 8d 7b 28 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80
RSP: 0018:ffffc90000dc0e40 EFLAGS: 00000046
RAX: 0000000000010002 RBX: ffff88807c5e1340 RCX: 0000000000000000
RDX: ffff888083099d00 RSI: ffffffff8167048a RDI: 0000000000000003
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff8166dccb R11: 0000000000000000 R12: 17adfeb8af5bfd71
R13: ffff8880b9d2a500 R14: ffff8880b9d2a400 R15: 0000000000000001
FS:  00007fb096042700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0d777db004 CR3: 00000000823df000 CR4: 0000000000350ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline]
 __sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1103
 sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1097
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x38/0x70 kernel/locking/spinlock.c:194
Code: 74 24 10 e8 fa be 15 f8 48 89 ef e8 42 35 16 f8 81 e3 00 02 00 00 75 25 9c 58 f6 c4 02 75 2d 48 85 db 74 01 fb bf 01 00 00 00 <e8> b3 fd 08 f8 65 8b 05 8c 80 bb 76 85 c0 74 0a 5b 5d c3 e8 90 ef
RSP: 0018:ffffc90004cef228 EFLAGS: 00000206
RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff1ff7b9e
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffffffff9071de98 R08: 0000000000000001 R09: ffffffff8ff72ac7
R10: 0000000000000001 R11: 0000000000000000 R12: dffffc0000000000
R13: ffffffff89adf660 R14: ffff888091c16a08 R15: 1ffff9200099de4a
 debug_object_assert_init lib/debugobjects.c:902 [inline]
 debug_object_assert_init+0x246/0x2e0 lib/debugobjects.c:866
 debug_timer_assert_init kernel/time/timer.c:739 [inline]
 debug_assert_init kernel/time/timer.c:784 [inline]
 del_timer+0x6d/0x110 kernel/time/timer.c:1204
 sctp_transport_free+0xa2/0x130 net/sctp/transport.c:139
 sctp_association_free+0x4d4/0x7d0 net/sctp/associola.c:382
 sctp_cmd_delete_tcb net/sctp/sm_sideeffect.c:940 [inline]
 sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1324 [inline]
 sctp_side_effects net/sctp/sm_sideeffect.c:1195 [inline]
 sctp_do_sm+0x3665/0x4ed0 net/sctp/sm_sideeffect.c:1166
 sctp_assoc_bh_rcv+0x386/0x6c0 net/sctp/associola.c:1054
 sctp_inq_push+0x1da/0x270 net/sctp/inqueue.c:80
 sctp_backlog_rcv+0x19e/0x5b0 net/sctp/input.c:344
 sk_backlog_rcv include/net/sock.h:1030 [inline]
 __release_sock+0x134/0x3b0 net/core/sock.c:2768
 release_sock+0x54/0x1b0 net/core/sock.c:3300
 sctp_wait_for_connect+0x1cb/0x5d0 net/sctp/socket.c:9306
 sctp_sendmsg_to_asoc+0x1828/0x2390 net/sctp/socket.c:1881
 sctp_sendmsg+0x103b/0x1d30 net/sctp/socket.c:2027
 inet_sendmsg+0x99/0xe0 net/ipv4/af_inet.c:819
 sock_sendmsg_nosec net/socket.c:704 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:724
 __sys_sendto+0x21c/0x320 net/socket.c:2036
 __do_sys_sendto net/socket.c:2048 [inline]
 __se_sys_sendto net/socket.c:2044 [inline]
 __x64_sys_sendto+0xdd/0x1b0 net/socket.c:2044
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fb098aedae9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fb096042188 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007fb098c01020 RCX: 00007fb098aedae9
RDX: 0000000000000bb7 RSI: 0000000020000000 RDI: 0000000000000005
RBP: 00007fb098b47f6d R08: 0000000020000240 R09: 000000000000001c
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd7217695f R14: 00007fb096042300 R15: 0000000000022000
 </TASK>
----------------
Code disassembly (best guess):
   0:	03 0f                	add    (%rdi),%ecx
   2:	b6 04                	mov    $0x4,%dh
   4:	02 84 c0 74 08 3c 03 	add    0x33c0874(%rax,%rax,8),%al
   b:	0f 8e 75 08 00 00    	jle    0x886
  11:	41 83 45 10 01       	addl   $0x1,0x10(%r13)
  16:	41 83 45 10 01       	addl   $0x1,0x10(%r13)
  1b:	31 d2                	xor    %edx,%edx
  1d:	31 c9                	xor    %ecx,%ecx
  1f:	48 89 df             	mov    %rbx,%rdi
  22:	4c 89 ee             	mov    %r13,%rsi
  25:	e8 f6 d6 ff ff       	callq  0xffffd720
* 2a:	48 8d 7b 28          	lea    0x28(%rbx),%rdi <-- trapping instruction
  2e:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  35:	fc ff df
  38:	48 89 fa             	mov    %rdi,%rdx
  3b:	48 c1 ea 03          	shr    $0x3,%rdx
  3f:	80                   	.byte 0x80