rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (10411 ticks this GP) idle=0114/1/0x4000000000000000 softirq=69626/69630 fqs=4754
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1241987         17            0
rcu: 	cputime:    35007      17481           38   ==> 52490(ms)
rcu: 	(t=10500 jiffies g=65029 q=2026 ncpus=2)
CPU: 1 UID: 0 PID: 15514 Comm: syz.7.2482 Not tainted syzkaller #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+0x1d/0x480
Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 55 41 57 41 56 41 55 41 54 53 48 83 ec 10 65 8b 2d 8b ad 4d 11 f7 c5 00 00 f0 00 74 14 <48> 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 49 89
RSP: 0018:ffffc90000a08580 EFLAGS: 00000206
RAX: 0000000000000002 RBX: 0000000000000246 RCX: 0000000000000101
RDX: 0000000000000002 RSI: ffffffff8dcf1f4e RDI: ffffffff8c076d00
RBP: ffff8882a96a4001 R08: ffffffff8ff0e0b7 R09: 1ffffffff1fe1c16
R10: dffffc0000000000 R11: fffffbfff1fe1c17 R12: 0000000000000001
R13: dffffc0000000000 R14: ffff88823c63bd40 R15: ffff888174b35700
FS:  00007f41558d56c0(0000) GS:ffff8882a96a4000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f081cfe8400 CR3: 000000019540a000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 __rcu_read_unlock+0x83/0xe0
 unwind_next_frame+0x1aaf/0x23c0
 arch_stack_walk+0x11b/0x150
 stack_trace_save+0xa9/0x100
 kasan_save_track+0x3e/0x80
 __kasan_slab_alloc+0x6c/0x80
 kmem_cache_alloc_node_noprof+0x384/0x690
 __alloc_skb+0x1d0/0x7d0
 ndisc_alloc_skb+0x9f/0x480
 ndisc_send_rs+0x2b5/0x630
 addrconf_rs_timer+0x395/0x6d0
 call_timer_fn+0x192/0x640
 __run_timer_base+0x652/0x8b0
 run_timer_softirq+0xb7/0x170
 handle_softirqs+0x22a/0x870
 __irq_exit_rcu+0x5f/0x150
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:raw_spin_rq_unlock_irq+0x17/0x90
Code: 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 41 57 41 56 53 66 90 48 83 c7 48 e8 50 bd fb 09 e8 eb 77 36 00 fb 5b <41> 5e 41 5f c3 cc cc cc cc cc 49 be 00 00 00 00 00 fc ff df 49 89
RSP: 0018:ffffc90004fd6a88 EFLAGS: 00000202
RAX: 000000000001693d RBX: ffff88823c63ad80 RCX: 0000000080000001
RDX: 0000000000000000 RSI: ffffffff8dcf1f4e RDI: ffffffff8c076d00
RBP: ffffc90004fd6ca0 R08: ffffffff8ff0e0b7 R09: 1ffffffff1fe1c16
R10: dffffc0000000000 R11: fffffbfff1fe1c17 R12: dffffc0000000000
R13: ffff888174b35700 R14: ffff88823c63b8f8 R15: 1ffff110478c75b3
 __schedule+0x1a74/0x5070
 preempt_schedule_common+0x82/0xd0
 preempt_schedule_thunk+0x16/0x30
 _raw_spin_unlock_irqrestore+0x74/0x80
 rcu_preempt_deferred_qs_irqrestore+0x7b9/0xbc0
 __rcu_read_unlock+0x83/0xe0
 obj_cgroup_charge_pages+0x6e/0xa0
 obj_cgroup_charge_account+0xcf/0x650
 __memcg_slab_post_alloc_hook+0x3ee/0x820
 __kmalloc_cache_noprof+0x359/0x660
 copy_verifier_state+0x876/0xf90
 push_stack+0x19d/0x3a0
 check_cond_jmp_op+0x17a2/0x2cd0
 do_check+0x5d17/0xeac0
 do_check_common+0x19c8/0x25b0
 bpf_check+0x5f0d/0x1cdd0
 bpf_prog_load+0x1484/0x1ae0
 __sys_bpf+0x618/0x950
 __x64_sys_bpf+0x7c/0x90
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f415499acb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f41558d5028 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f4154c15fa0 RCX: 00007f415499acb9
RDX: 0000000000000048 RSI: 00002000000017c0 RDI: 0000000000000005
RBP: 00007f4154a08bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f4154c16038 R14: 00007f4154c15fa0 R15: 00007ffea2001088
 </TASK>
sched: DL replenish lagged too much
