rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (1 GPs behind) idle=6b8c/1/0x4000000000000000 softirq=13742/13743 fqs=4527
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1005160          0            0
rcu: 	cputime:    25105      27363           92   ==> 52470(ms)
rcu: 	(t=10500 jiffies g=7937 q=2808 ncpus=2)
CPU: 1 UID: 0 PID: 6127 Comm: syz.0.105 Not tainted 6.16.0-rc6-syzkaller-00434-gcd7c97f4584a-dirty #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:_raw_spin_unlock_irqrestore+0xa8/0x110
Code: 74 05 e8 9b 93 56 f6 48 c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f6 44 24 21 02 75 4f f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> e3 c1 1f f6 65 8b 05 bc f9 2e 07 85 c0 74 40 48 c7 04 24 0e 36
RSP: 0018:ffffc900001e0a40 EFLAGS: 00000206
RAX: e525fb677383f300 RBX: 0000000000000a06 RCX: e525fb677383f300
RDX: 0000000000000002 RSI: ffffffff8d998701 RDI: 0000000000000001
RBP: ffffc900001e0ac0 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff888136625940 R15: 1ffff9200003c148
FS:  00007fdffa97a6c0(0000) GS:ffff8881a3c1f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000005f9000 CR3: 0000000028948000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 __mod_timer+0xb37/0xf30
 mrp_join_timer+0x13f/0x170
 call_timer_fn+0x17e/0x5f0
 __run_timer_base+0x61a/0x860
 run_timer_softirq+0xb7/0x180
 handle_softirqs+0x286/0x870
 __irq_exit_rcu+0xca/0x1f0
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:_raw_spin_unlock_irqrestore+0xa8/0x110
Code: 74 05 e8 9b 93 56 f6 48 c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f6 44 24 21 02 75 4f f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> e3 c1 1f f6 65 8b 05 bc f9 2e 07 85 c0 74 40 48 c7 04 24 0e 36
RSP: 0018:ffffc90004f4f600 EFLAGS: 00000206
RAX: e525fb677383f300 RBX: 0000000000000a06 RCX: e525fb677383f300
RDX: 0000000000000006 RSI: ffffffff8d998701 RDI: 0000000000000001
RBP: ffffc90004f4f690 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: dffffc0000000000
R13: ffff8881057900e8 R14: ffff88811302aa40 R15: 1ffff920009e9ec0
 unix_stream_read_generic+0x167b/0x2350
 unix_stream_recvmsg+0x15d/0x1b0
 sock_recvmsg+0x22c/0x270
 ____sys_recvmsg+0x1c9/0x460
 ___sys_recvmsg+0x1b5/0x510
 __x64_sys_recvmsg+0x198/0x260
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fdff9b8eb69
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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fdffa97a038 EFLAGS: 00000246 ORIG_RAX: 000000000000002f
RAX: ffffffffffffffda RBX: 00007fdff9db5fa0 RCX: 00007fdff9b8eb69
RDX: 0000000000010002 RSI: 0000200000000580 RDI: 0000000000000003
RBP: 00007fdff9c11df1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fdff9db5fa0 R15: 00007ffc3c58b8c8
 </TASK>
sched: DL replenish lagged too much
