rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (1 GPs behind) idle=1f44/1/0x4000000000000000 softirq=25930/25931 fqs=4596
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:   974744          0            0
rcu: 	cputime:    25512      26967           95   ==> 52480(ms)
rcu: 	(t=10500 jiffies g=16985 q=3163 ncpus=2)
CPU: 0 UID: 0 PID: 8741 Comm: syz.1.1295 Not tainted 6.16.0-rc6-syzkaller-00434-gcd7c97f4584a #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:ffffc90000007a40 EFLAGS: 00000206
RAX: 7bbb3609c72a7a00 RBX: 0000000000000a06 RCX: 7bbb3609c72a7a00
RDX: 0000000000000002 RSI: ffffffff8d9986f9 RDI: 0000000000000001
RBP: ffffc90000007ac0 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff88804b025940 R15: 1ffff92000000f48
FS:  00007f9e0feb46c0(0000) GS:ffff8880b861f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000001000 CR3: 0000000023302000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000082
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:kasan_check_range+0x10/0x2c0
Code: cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 55 41 57 41 56 41 55 41 54 53 b0 01 <48> 85 f6 0f 84 ba 01 00 00 4c 8d 04 37 49 39 f8 0f 82 82 02 00 00
RSP: 0018:ffffc9000306f388 EFLAGS: 00000286
RAX: 0000000000000001 RBX: ffff88801e5b6570 RCX: ffffffff819db9f6
RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffff88801e5b6578
RBP: ffffc9000306f470 R08: ffff88801e5b657f R09: 1ffff11003cb6caf
R10: dffffc0000000000 R11: ffffed1003cb6cb0 R12: 1ffff9200060de7c
R13: 1ffff11003cb6caf R14: ffff88801e5b6578 R15: ffff88802196b981
 down_read_trylock+0x1a6/0x380
 lock_mm_and_find_vma+0x32/0x300
 do_user_addr_fault+0x331/0x1390
 exc_page_fault+0x76/0xf0
 asm_exc_page_fault+0x26/0x30
RIP: 0010:rep_movs_alternative+0x75/0x90
Code: 05 c3 cc cc cc cc 48 8b 06 48 89 07 48 8d 47 08 48 83 e0 f8 48 29 f8 48 01 c7 48 01 c6 48 29 c1 48 89 c8 48 c1 e9 03 83 e0 07 <f3> 48 a5 89 c1 85 c9 75 91 e9 fd 00 04 00 48 8d 0c c8 eb 86 cc cc
RSP: 0018:ffffc9000306f658 EFLAGS: 00010202
RAX: 0000000000000004 RBX: ffff88810fc98000 RCX: 00000000000001a9
RDX: 0000000000000000 RSI: ffff88810fc98140 RDI: 0000200000001000
RBP: ffffc9000306f7b0 R08: ffff88810fc98e8b R09: 1ffff11021f931d1
R10: dffffc0000000000 R11: ffffed1021f931d2 R12: dffffc0000000000
R13: 0000000000000000 R14: 00007ffffffff000 R15: 0000000000000e8c
 _copy_to_iter+0x484/0x16f0
 __skb_datagram_iter+0xf8/0x990
 skb_copy_datagram_iter+0xc5/0x230
 netlink_recvmsg+0x2ab/0xa30
 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: 0033:0x7f9e0ef8eb69
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:00007f9e0feb4038 EFLAGS: 00000246 ORIG_RAX: 000000000000002f
RAX: ffffffffffffffda RBX: 00007f9e0f1b5fa0 RCX: 00007f9e0ef8eb69
RDX: 0000000000002000 RSI: 0000200000000040 RDI: 0000000000000009
RBP: 00007f9e0f011df1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f9e0f1b5fa0 R15: 00007ffd9753a9e8
 </TASK>
sched: DL replenish lagged too much
