rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (10500 ticks this GP) idle=3b2c/1/0x4000000000000000 softirq=15280/15280 fqs=3494
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1071047          0            0
rcu: 	cputime:    25984      26505           87   ==> 52490(ms)
rcu: 	(t=10500 jiffies g=7813 q=3202 ncpus=2)
CPU: 0 UID: 0 PID: 6128 Comm: syz.0.102 Not tainted 6.16.0-rc6-syzkaller-00411-g95993dc3039e-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:rcu_read_unlock_special+0x87/0x4c0
Code: f1 f1 f1 00 f2 f2 f2 4a 89 04 2b 66 42 c7 44 2b 09 f3 f3 42 c6 44 2b 0b f3 65 44 8b 35 62 2c f8 10 41 f7 c6 00 00 f0 00 74 49 <48> c7 44 24 40 0e 36 e0 45 4a c7 04 2b 00 00 00 00 66 42 c7 44 2b
RSP: 0018:ffffc900000073e0 EFLAGS: 00000206
RAX: 4812e26585971c00 RBX: 1ffff92000000e84 RCX: 4812e26585971c00
RDX: 0000000000000002 RSI: ffffffff8d99883e RDI: ffffffff8be29f40
RBP: ffffc900000074d8 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: ffffffff8e144400
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001
FS:  00007f67334296c0(0000) GS:ffff8880b861f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000018c0 CR3: 00000000285c0000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 __rcu_read_unlock+0x84/0xe0
 unwind_next_frame+0x19ae/0x2390
 arch_stack_walk+0x11c/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_track+0x3e/0x80
 __kasan_slab_alloc+0x6c/0x80
 kmem_cache_alloc_node_noprof+0x1bb/0x3c0
 __alloc_skb+0x112/0x2d0
 ndisc_alloc_skb+0x9f/0x480
 ndisc_send_rs+0x2b5/0x630
 addrconf_rs_timer+0x369/0x670
 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:stack_depot_save_flags+0x168/0x900
Code: c8 31 c5 c1 c0 18 29 c5 48 8b 05 33 7e e7 14 8b 0d 25 7e e7 14 21 e9 48 c1 e1 04 4c 8d 3c 08 65 ff 05 dc a6 a9 0d 4c 8b 24 08 <4d> 39 fc 0f 84 88 00 00 00 45 89 d5 eb 2d 90 0f 0b 90 31 c0 e9 ce
RSP: 0018:ffffc9000624f998 EFLAGS: 00000282
RAX: ffff888135400000 RBX: 0000000000000dc0 RCX: 0000000000001fe0
RDX: 00000000dd56d9c4 RSI: 0000000000000001 RDI: 0000000042149f88
RBP: 000000006e3001fe R08: 00000000284c19ed R09: 0000000008978e4f
R10: 000000000000000c R11: ffffffff81ad0050 R12: ffff888107fded40
R13: ffff88802b525000 R14: ffffc9000624fa10 R15: ffff888135401fe0
 kasan_save_track+0x4f/0x80
 __kasan_kmalloc+0x93/0xb0
 __kmalloc_noprof+0x27a/0x4f0
 sk_prot_alloc+0xe7/0x220
 sk_alloc+0x3a/0x370
 __netlink_create+0x65/0x260
 netlink_create+0x3ca/0x590
 __sock_create+0x4b3/0x9f0
 __sys_socket+0xd7/0x1b0
 __x64_sys_socket+0x7a/0x90
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f673258e9a9
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:00007f6733429038 EFLAGS: 00000246 ORIG_RAX: 0000000000000029
RAX: ffffffffffffffda RBX: 00007f67327b5fa0 RCX: 00007f673258e9a9
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000010
RBP: 00007f6732610d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f67327b5fa0 R15: 00007ffc07f7f478
 </TASK>
sched: DL replenish lagged too much
