rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...!: (1 GPs behind) idle=8efc/0/0x1 softirq=16094/16159 fqs=0
rcu: 	(detected by 1, t=10502 jiffies, g=9161, q=1100 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 6.16.0-rc3-syzkaller-00159-g223e2288f4b8 #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:__hrtimer_run_queues+0x29c/0xc60
Code: 48 8b bc 24 98 00 00 00 be ff ff ff ff e8 5c 7d c0 09 89 c3 31 ff 89 c6 e8 61 f4 11 00 85 db 0f 84 8c 04 00 00 e8 14 f0 11 00 <eb> 05 e8 0d f0 11 00 48 8b 5c 24 18 4c 89 e7 e8 90 35 00 00 48 8b
RSP: 0018:ffffc90000007d40 EFLAGS: 00000006
RAX: ffffffff81ae6e5c RBX: 0000000000000001 RCX: ffffffff8de95280
RDX: 0000000000010000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90000007e90 R08: ffff888118328357 R09: 0000000000000000
R10: ffff888118328340 R11: ffffed102306506b R12: ffff888118328340
R13: dffffc0000000000 R14: 185089b3555b80da R15: ffff88804b027bc0
FS:  0000000000000000(0000) GS:ffff8880b861d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9ba7e00218 CR3: 000000010f680000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 hrtimer_interrupt+0x45b/0xaa0
 __sysvec_apic_timer_interrupt+0x10b/0x410
 sysvec_apic_timer_interrupt+0xa1/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:pv_native_safe_halt+0x13/0x20
Code: cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa eb 07 0f 00 2d e3 45 19 00 f3 0f 1e fa fb f4 <c3> cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffffff8de07d80 EFLAGS: 00000286
RAX: b758de7acdce5c00 RBX: ffffffff81975d58 RCX: b758de7acdce5c00
RDX: 0000000000000001 RSI: ffffffff8d996d10 RDI: ffffffff8be28fc0
RBP: ffffffff8de07ea8 R08: ffff88804b032f5b R09: 1ffff110096065eb
R10: dffffc0000000000 R11: ffffed10096065ec R12: ffffffff8fa1def0
R13: 0000000000000000 R14: 0000000000000000 R15: 1ffffffff1bd2a50
 default_idle+0x13/0x20
 default_idle_call+0x74/0xb0
 do_idle+0x1e8/0x510
 cpu_startup_entry+0x44/0x60
 rest_init+0x2de/0x300
 start_kernel+0x47d/0x500
 x86_64_start_reservations+0x24/0x30
 x86_64_start_kernel+0x143/0x1c0
 common_startup_64+0x13e/0x147
 </TASK>
rcu: rcu_preempt kthread starved for 10502 jiffies! g9161 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:26632 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:
CPU: 1 UID: 0 PID: 5578 Comm: dhcpcd Not tainted 6.16.0-rc3-syzkaller-00159-g223e2288f4b8 #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:smp_call_function_many_cond+0xf7b/0x12d0
Code: 83 e5 01 49 bd 00 00 00 00 00 fc ff df 75 07 e8 6b 75 0b 00 eb 37 f3 90 43 0f b6 04 2c 84 c0 75 10 41 f7 07 01 00 00 00 74 1e <e8> 50 75 0b 00 eb e5 44 89 f9 80 e1 07 80 c1 03 38 c1 7c e3 4c 89
RSP: 0018:ffffc90002adf560 EFLAGS: 00000202
RAX: 0000000000000000 RBX: ffff88813663b1c0 RCX: ffff88810e6c3980
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90002adf6c0 R08: ffffffff8fa1def7 R09: 1ffffffff1f43bde
R10: dffffc0000000000 R11: fffffbfff1f43bdf R12: 1ffff11009608385
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff88804b041c28
FS:  00007f26041da740(0000) GS:ffff8881a3c1d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005595852055a0 CR3: 0000000108ffe000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 on_each_cpu_cond_mask+0x3f/0x80
 flush_tlb_mm_range+0x6b1/0x12c0
 dup_mmap+0x15a0/0x1ac0
 copy_mm+0x13c/0x4b0
 copy_process+0x1706/0x3c00
 kernel_clone+0x21e/0x870
 __x64_sys_clone+0x18b/0x1e0
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f260428aa12
Code: 41 5d 41 5e 41 5f c3 64 48 8b 04 25 10 00 00 00 45 31 c0 31 d2 31 f6 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 10 48 8b 15 e7 43 0f 00 f7 d8 64 89 02 48 83
RSP: 002b:00007fff13afa338 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000557d88fbeb01 RCX: 00007f260428aa12
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 00007fff13b1a8a8 R08: 0000000000000000 R09: 0000557d88fbeba0
R10: 00007f26041daa10 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000557d88fbebd4
 </TASK>
