clocksource: Long readout interval, skipping watchdog check: cs_nsec: 28117318756 wd_nsec: 28117319379
clocksource: Long readout interval, skipping watchdog check: cs_nsec: 74563241965 wd_nsec: 74563243687
rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-...!: (10499 ticks this GP) idle=aa8c/1/0x4000000000000000 softirq=13881/13882 fqs=2
rcu: 	(t=10500 jiffies g=7225 q=509 ncpus=2)
rcu: rcu_preempt kthread starved for 10497 jiffies! g7225 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
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:R  running task     stack:26696 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00004000
Call Trace:
 <TASK>
 __schedule+0x16f5/0x4d00
 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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 5981 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:native_queued_spin_lock_slowpath+0xaf/0x8e0
Code: 00 00 00 c7 44 24 60 00 00 00 00 0f 1f 44 00 00 4c 8d 74 24 60 49 89 df 49 c1 ef 03 41 bd 01 00 00 00 eb 06 89 44 24 60 f3 90 <48> 89 df be 04 00 00 00 e8 94 28 b2 f6 48 b8 00 00 00 00 00 fc ff
RSP: 0018:ffffc9000377f800 EFLAGS: 00000202
RAX: 0000000000000001 RBX: ffff88801d6a4d08 RCX: ffffffff8b71260c
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88801d6a4d08
RBP: ffffc9000377f8f8 R08: ffff88801d6a4d0b R09: 1ffff11003ad49a1
R10: dffffc0000000000 R11: ffffed1003ad49a2 R12: 1ffff920006eff08
R13: 0000000000000001 R14: ffffc9000377f860 R15: 1ffff11003ad49a1
FS:  0000555583b84500(0000) GS:ffff8881a3c1f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0503d87560 CR3: 0000000027662000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 queued_spin_lock_slowpath+0x43/0x50
 do_raw_spin_lock+0x21f/0x290
 futex_unqueue+0xf6/0x240
 __futex_wait+0x223/0x3e0
 futex_wait+0x104/0x360
 do_futex+0x333/0x420
 __se_sys_futex+0x36f/0x400
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0503b8e9a9
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:00007ffcc1291bd8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 000000000000ebc1 RCX: 00007f0503b8e9a9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f0503db5fac
RBP: 0000000000000032 R08: 7fffffffffffffff R09: 00000015c1291ecf
R10: 00007ffcc1291cd0 R11: 0000000000000246 R12: 00007f0503db5fac
R13: 00007ffcc1291cd0 R14: 000000000000ebf3 R15: 00007ffcc1291cf0
 </TASK>
CPU: 0 UID: 0 PID: 5982 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: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: 13d9d99263d97d00 RBX: 1ffff92000000e84 RCX: 13d9d99263d97d00
RDX: 0000000000000002 RSI: ffffffff8d998836 RDI: ffffffff8be29f40
RBP: ffffc900000074d8 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: ffffffff8e144400
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001
FS:  00007f0504a286c0(0000) GS:ffff8880b861f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0504a06fc8 CR3: 0000000027662000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000602
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:plist_del+0x27/0x3f0
Code: 90 90 90 66 0f 1f 00 55 41 57 41 56 41 55 41 54 53 48 83 ec 28 48 89 f3 49 89 fe 49 bc 00 00 00 00 00 fc ff df e8 49 b2 56 f6 <48> 89 d8 48 c1 e8 03 48 89 44 24 20 42 80 3c 20 00 74 08 48 89 df
RSP: 0018:ffffc9000361fb10 EFLAGS: 00000293
RAX: ffffffff8b6976a7 RBX: ffff88801d6a4d48 RCX: ffff888021d18000
RDX: 0000000000000000 RSI: ffff88801d6a4d48 RDI: ffffc9000377faa0
RBP: 0000000000000001 R08: ffff888021d19ceb R09: 1ffff110043a339d
R10: dffffc0000000000 R11: ffffed10043a339e R12: dffffc0000000000
R13: ffffc9000377fad0 R14: ffffc9000377faa0 R15: ffff88801d6a4d08
 __futex_unqueue+0xf0/0x160
 futex_wake_mark+0xe2/0x220
 futex_wake+0x37a/0x500
 do_futex+0x395/0x420
 __se_sys_futex+0x36f/0x400
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0503b8e9a9
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:00007f0504a280e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f0503db5fa8 RCX: 00007f0503b8e9a9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f0503db5fac
RBP: 00007f0503db5fa0 R08: 7fffffffffffffff R09: 0000000000000000
R10: 000000000000000b R11: 0000000000000246 R12: 00007f0503db5fac
R13: 0000000000000000 R14: 00007ffcc1291990 R15: 00007ffcc1291a78
 </TASK>
sched: DL replenish lagged too much
