rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-...!: (1 GPs behind) idle=575c/1/0x4000000000000000 softirq=20524/20525 fqs=1013
rcu: 	(t=10500 jiffies g=9637 q=128737 ncpus=2)
rcu: rcu_preempt kthread timer wakeup didn't happen for 8343 jiffies! g9637 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=0 timer-softirq=4177
rcu: rcu_preempt kthread starved for 8344 jiffies! g9637 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0
rcu: 	Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt     state:I stack:26760 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00004000
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 schedule+0x165/0x360
 schedule_timeout+0x12b/0x270
 rcu_gp_fqs_loop+0x301/0x1540
 rcu_gp_kthread+0x99/0x390
 kthread+0x711/0x8a0
 ret_from_fork+0x3fc/0x770
 ret_from_fork_asm+0x1a/0x30
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 6950 Comm: udevd 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:kasan_check_range+0x0/0x2c0
Code: 48 c7 c6 1a 75 ba 8d e8 3e 00 05 ff 90 0f 0b cc 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
RSP: 0018:ffffc900000078b8 EFLAGS: 00000246
RAX: 0000000000000001 RBX: ffff888029d118c0 RCX: ffffffff8b7c1dbc
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888029d118c0
RBP: ffffc900000079b8 R08: ffff888029d118c3 R09: 1ffff110053a2318
R10: dffffc0000000000 R11: ffffed10053a2319 R12: 1ffff92000000f20
R13: 0000000000000001 R14: ffffc90000007920 R15: 1ffff110053a2318
FS:  00007f00939d6c80(0000) GS:ffff8880b861b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f00939d7628 CR3: 000000001ea58000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 native_queued_spin_lock_slowpath+0xbc/0x8e0
 queued_spin_lock_slowpath+0x43/0x50
 do_raw_spin_lock+0x21f/0x290
 __xfrm_state_delete+0xba/0xca0
 xfrm_timer_handler+0x18f/0xa00
 __hrtimer_run_queues+0x52c/0xc60
 hrtimer_run_softirq+0x187/0x2b0
 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:native_apic_msr_write+0x39/0x50
Code: 74 2a 83 ff 30 74 25 eb 10 81 ff d0 00 00 00 74 1b 81 ff e0 00 00 00 74 13 c1 ef 04 81 c7 00 08 00 00 89 f9 89 f0 31 d2 0f 30 <66> 90 c3 cc cc cc cc cc f3 0f 1e fa 89 f6 31 d2 e9 92 86 8e 03 66
RSP: 0018:ffffc900028ffb28 EFLAGS: 00000246
RAX: 00000000000000f6 RBX: 0000000000000200 RCX: 000000000000083f
RDX: 0000000000000000 RSI: 00000000000000f6 RDI: 000000000000083f
RBP: ffffc900028ffc00 R08: ffffc900028ffb87 R09: 1ffff9200051ff70
R10: dffffc0000000000 R11: fffff5200051ff71 R12: ffff88804b031401
R13: 0000000000000000 R14: 0000000000000000 R15: ffff88804b0314b0
 arch_irq_work_raise+0x6d/0x80
 __irq_work_queue_local+0x1d7/0x550
 irq_work_queue+0x99/0x140
 bpf_send_signal_common+0x3b4/0x540
 bpf_send_signal+0x1d/0x30
 bpf_prog_8cc4ff36b5985b6a+0x1e/0x24
 bpf_trace_run2+0x284/0x4b0
 __bpf_trace_sys_enter+0x38/0x60
 trace_sys_enter+0xb0/0x100
 syscall_trace_enter+0xf9/0x160
 do_syscall_64+0xd3/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0093523457
Code: 73 01 c3 48 8b 0d d1 d9 0c 00 f7 d8 64 89 01 48 83 c8 ff c3 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 20 b8 e8 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 76 48 8b 15 a2 d9 0c 00 f7 d8 64 89 02 48 83
RSP: 002b:00007fff00351248 EFLAGS: 00000246 ORIG_RAX: 00000000000000e8
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0093523457
RDX: 0000000000000004 RSI: 00007fff00351288 RDI: 0000000000000004
RBP: 00007fff00351294 R08: 0000000000000007 R09: 95d94e35885f2734
R10: 00000000ffffffff R11: 0000000000000246 R12: 000055eb72378de0
R13: 00007fff00351288 R14: 0000000000000001 R15: 000055eb72360910
 </TASK>
CPU: 1 UID: 0 PID: 6942 Comm: syz.2.320 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:__sanitizer_cov_trace_pc+0x0/0x70
Code: 89 fb e8 23 00 00 00 48 8b 3d c4 49 fe 0b 48 89 de 5b e9 73 98 58 00 cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 48 8b 04 24 65 48 8b 0c 25 08 50 a0 92 65 8b 15 e8 a4
RSP: 0018:ffffc90002a4f0b8 EFLAGS: 00000202
RAX: ffffffff8a205cf8 RBX: ffff88802781ad00 RCX: 0000000000000002
RDX: ffff88801f495640 RSI: 0000000000000002 RDI: 000000000000000a
RBP: ffffc90002a4f1b0 R08: ffff88801f495640 R09: 0000000000000002
R10: 000000000000000a R11: 0000000000000002 R12: dffffc0000000000
R13: 0000000000000002 R14: 000000000000000a R15: 00000000fe000000
FS:  00007f928d5b46c0(0000) GS:ffff8881a3c1b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f928d5b3fc8 CR3: 000000010fada000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 __xfrm_state_lookup+0x466/0x8d0
 xfrm_state_update+0x20a/0x1270
 xfrm_add_sa+0x35b2/0x4070
 xfrm_user_rcv_msg+0x7a3/0xab0
 netlink_rcv_skb+0x208/0x470
 xfrm_netlink_rcv+0x79/0x90
 netlink_unicast+0x82f/0x9e0
 netlink_sendmsg+0x805/0xb30
 __sock_sendmsg+0x21c/0x270
 ____sys_sendmsg+0x505/0x830
 ___sys_sendmsg+0x21f/0x2a0
 __x64_sys_sendmsg+0x19b/0x260
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f928c78ebe9
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:00007f928d5b4038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f928c9b5fa0 RCX: 00007f928c78ebe9
RDX: 0000000000002000 RSI: 0000200000000000 RDI: 0000000000000003
RBP: 00007f928c811e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f928c9b6038 R14: 00007f928c9b5fa0 R15: 00007ffea7c08768
 </TASK>
sched: DL replenish lagged too much
