rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (10499 ticks this GP) idle=cd4c/1/0x4000000000000000 softirq=14610/14610 fqs=4892
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:   933612          0            0
rcu: 	cputime:    25998      26490          127   ==> 52490(ms)
rcu: 	(t=10500 jiffies g=7577 q=3171 ncpus=2)
CPU: 1 UID: 0 PID: 6011 Comm: syz.2.39 Not tainted 6.16.0-rc6-syzkaller-00411-g95993dc3039e #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:get_random_u32+0x4e7/0x940
Code: e3 00 02 00 00 75 7e e8 f7 f5 75 fc 48 8b 5c 24 28 4d 85 ff 75 07 e8 e8 f5 75 fc eb 06 e8 e1 f5 75 fc fb 8b 84 24 00 01 00 00 <48> c7 44 24 40 0e 36 e0 45 42 c7 04 23 00 00 00 00 4a c7 44 23 0c
RSP: 0018:ffffc900001e09c0 EFLAGS: 00000246
RAX: 0000000090e48358 RBX: 1ffff9200003c140 RCX: ffff88801faa9cc0
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900001e0b40 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: dffffc0000000000
R13: 0000000000000001 R14: ffff888136636230 R15: 0000000000000200
FS:  00007fb5e9df66c0(0000) GS:ffff8881a3c1f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000004c0 CR3: 0000000121670000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 __get_random_u32_below+0x14/0x90
 garp_join_timer+0xd5/0x120
 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_irq_work+0xa3/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_irq_work+0x1a/0x20
RIP: 0010:preempt_schedule_irq+0xb0/0x150
Code: 24 20 f6 44 24 21 02 74 0c 90 0f 0b 48 f7 03 08 00 00 00 74 64 bf 01 00 00 00 e8 8b 2d 21 f6 e8 c6 00 58 f6 fb bf 01 00 00 00 <e8> 1b ab ff ff 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 8b 44 24
RSP: 0018:ffffc9000400fd80 EFLAGS: 00000282
RAX: b79bd49e5a8ea100 RBX: 0000000000000000 RCX: b79bd49e5a8ea100
RDX: 0000000000000000 RSI: ffffffff8d998836 RDI: 0000000000000001
RBP: ffffc9000400fe30 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000801fb0
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:do_syscall_64+0xc3/0x3b0
Code: 00 48 8b 7d 08 48 89 7b 18 e8 49 5a 00 00 0f 1f 44 00 00 0f 1f 44 00 00 90 e8 c9 84 59 f6 90 90 e8 72 84 59 f6 fb 49 8b 57 08 <f6> c2 3f 74 0e 4c 89 f7 4c 89 ee e8 cd dc 3c f6 49 89 c4 90 90 41
RSP: 0018:ffffc9000400fef0 EFLAGS: 00000286
RAX: b79bd49e5a8ea100 RBX: ffffc9000400fef0 RCX: b79bd49e5a8ea100
RDX: 0000000000000000 RSI: ffffffff8d998836 RDI: ffffffff8be29f40
RBP: ffffc9000400ff48 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: 0000000000000101
R13: 0000000000000101 R14: ffffc9000400ff58 R15: ffff88801faa9cc0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb5ebf8d310
Code: 48 89 44 24 20 75 93 44 89 54 24 0c e8 49 94 02 00 44 8b 54 24 0c 89 da 48 89 ee 41 89 c0 bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 38 44 89 c7 89 44 24 0c e8 9c 94 02 00 8b 44
RSP: 002b:00007fb5e9df5f10 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fb5ebf8d310
RDX: 0000000000000000 RSI: 00007fb5e9df5fa0 RDI: 00000000ffffff9c
RBP: 00007fb5e9df5fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fb5ec1b5fa0 R15: 00007fffa8b87198
 </TASK>
sched: DL replenish lagged too much
