Warning: Permanently added '10.128.0.40' (ED25519) to the list of known hosts.
executing program
executing program
executing program
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executing program
syzkaller login: [ 182.250286][ C1] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
[ 182.257513][ C1] (detected by 1, t=10502 jiffies, g=7665, q=63 ncpus=2)
[ 182.264654][ C1] rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4294955337-4294944835), jiffies_till_next_fqs=1, root ->qsmask 0x0
[ 182.278073][ C1] rcu: rcu_preempt kthread starved for 10502 jiffies! g7665 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
[ 182.289228][ C1] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
[ 182.299229][ C1] rcu: RCU grace-period kthread stack dump:
[ 182.305239][ C1] task:rcu_preempt state:R running task stack:27840 pid:16 ppid:2 flags:0x00004000
[ 182.316175][ C1] Call Trace:
[ 182.319483][ C1]
[ 182.322453][ C1] __schedule+0x10ec/0x40b0
[ 182.327035][ C1] ? lockdep_hardirqs_on+0x94/0x140
[ 182.332284][ C1] ? _raw_spin_unlock+0x40/0x40
[ 182.337277][ C1] ? __sched_text_start+0x8/0x8
[ 182.342202][ C1] schedule+0xb9/0x180
[ 182.346313][ C1] schedule_timeout+0x15c/0x280
[ 182.351215][ C1] ? console_conditional_schedule+0x40/0x40
[ 182.357330][ C1] ? lockdep_hardirqs_on_prepare+0x3fc/0x760
[ 182.363357][ C1] ? update_process_times+0x1b0/0x1b0
[ 182.368783][ C1] ? prepare_to_swait_event+0x335/0x350
[ 182.374436][ C1] rcu_gp_fqs_loop+0x2f2/0x1310
[ 182.379354][ C1] ? rcu_gp_kthread+0x380/0x380
[ 182.384263][ C1] ? lockdep_hardirqs_on_prepare+0x3fc/0x760
[ 182.390304][ C1] ? rcu_gp_init+0x14b0/0x14b0
[ 182.395114][ C1] ? rcu_gp_cleanup+0xb4c/0xca0
[ 182.400010][ C1] ? _raw_spin_unlock_irq+0x1f/0x40
[ 182.405257][ C1] ? lockdep_hardirqs_on+0x94/0x140
[ 182.410507][ C1] rcu_gp_kthread+0x95/0x380
[ 182.415135][ C1] ? rcu_report_qs_rsp+0x1a0/0x1a0
[ 182.420296][ C1] ? _raw_spin_unlock_irqrestore+0xaa/0x100
[ 182.426245][ C1] ? __kthread_parkme+0x162/0x1c0
[ 182.431319][ C1] kthread+0x29d/0x330
[ 182.435433][ C1] ? rcu_report_qs_rsp+0x1a0/0x1a0
[ 182.440761][ C1] ? kthread_blkcg+0xd0/0xd0
[ 182.445398][ C1] ret_from_fork+0x1f/0x30
[ 182.449870][ C1]
[ 182.452937][ C1] rcu: Stack dump where RCU GP kthread last ran:
[ 182.459294][ C1] Sending NMI from CPU 1 to CPUs 0:
[ 182.464543][ C0] NMI backtrace for cpu 0
[ 182.464561][ C0] CPU: 0 PID: 4278 Comm: syz-executor235 Not tainted syzkaller #0
[ 182.464578][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
[ 182.464587][ C0] RIP: 0010:lock_release+0x543/0x910
[ 182.464616][ C0] Code: 00 00 00 00 00 fc ff df 4d 85 e4 0f 85 ff fc ff ff 48 8b 7c 24 08 48 8b 74 24 10 48 8b 54 24 30 e8 32 6b 00 00 4c 8b 7c 24 18 <48> c7 c7 80 16 8c 8a e8 a1 2f b4 08 b8 ff ff ff ff 65 0f c1 05 a4
[ 182.464633][ C0] RSP: 0018:ffffc90000007b20 EFLAGS: 00000046
[ 182.464648][ C0] RAX: 1ffff1100f2ba15a RBX: b1848fc2b17dd0f4 RCX: 0000000000000001
[ 182.464660][ C0] RDX: 0000000000000001 RSI: ffffffff8cb2abe0 RDI: ffff8880795d0b08
[ 182.464672][ C0] RBP: ffffc90000007c40 R08: dffffc0000000000 R09: fffffbfff1c3ecb6
[ 182.464684][ C0] R10: fffffbfff1c3ecb6 R11: 1ffffffff1c3ecb5 R12: ffff8880795d0b08
[ 182.464696][ C0] R13: dffffc0000000000 R14: ffff8880795d0ad0 R15: 1ffff92000000f70
[ 182.464709][ C0] FS: 00007fa4e7e296c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
[ 182.464723][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 182.464735][ C0] CR2: 0000200000000058 CR3: 0000000026aa4000 CR4: 00000000003506f0
[ 182.464749][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 182.464758][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 182.464768][ C0] Call Trace:
[ 182.464774][ C0]
[ 182.464782][ C0] ? send_sigqueue+0x8d/0x600
[ 182.464809][ C0] ? __lock_acquire+0x7c50/0x7c50
[ 182.464831][ C0] ? _raw_spin_unlock_irqrestore+0xaa/0x100
[ 182.464858][ C0] ? _raw_spin_unlock+0x40/0x40
[ 182.464886][ C0] send_sigqueue+0x492/0x600
[ 182.464910][ C0] ? send_sigqueue+0x8d/0x600
[ 182.464935][ C0] posix_timer_fn+0x16a/0x3d0
[ 182.464953][ C0] __hrtimer_run_queues+0x554/0xd60
[ 182.464970][ C0] ? ktime_get_update_offsets_now+0x95/0x3e0
[ 182.464990][ C0] ? ktime_get_update_offsets_now+0x95/0x3e0
[ 182.465013][ C0] ? common_timer_wait_running+0x10/0x10
[ 182.465032][ C0] ? hrtimer_interrupt+0x9c0/0x9c0
[ 182.465052][ C0] hrtimer_interrupt+0x3c5/0x9c0
[ 182.465078][ C0] __sysvec_apic_timer_interrupt+0x153/0x5a0
[ 182.465104][ C0] sysvec_apic_timer_interrupt+0x9b/0xc0
[ 182.465128][ C0]
[ 182.465138][ C0]
[ 182.465144][ C0] asm_sysvec_apic_timer_interrupt+0x16/0x20
[ 182.465162][ C0] RIP: 0010:copy_siginfo_to_user+0xcd/0x140
[ 182.465189][ C0] Code: 2f 00 48 b8 b1 ef ff ff ff 7f 00 00 48 39 c3 73 49 e8 c7 a8 2f 00 48 c7 c7 a0 2e 8b 8a be 60 00 00 00 e8 76 4a 6d 00 0f 01 cb <45> 31 f6 b9 50 00 00 00 31 c0 48 89 df e8 a1 0a ba 08 48 89 cb 0f
[ 182.465202][ C0] RSP: 0018:ffffc90003d47ca0 EFLAGS: 00040246
[ 182.465215][ C0] RAX: 01192d03e5724500 RBX: 00007fa4e7e28d20 RCX: 01192d03e5724500
[ 182.465227][ C0] RDX: 0000000000000000 RSI: ffffffff8a8c1680 RDI: ffffffff8adefd20
[ 182.465238][ C0] RBP: 0000000000000000 R08: dffffc0000000000 R09: fffffbfff1c3ecb6
[ 182.465250][ C0] R10: fffffbfff1c3ecb6 R11: 1ffffffff1c3ecb5 R12: 00000000fffffff2
[ 182.465261][ C0] R13: 1ffff920007a8fff R14: 0000000000000000 R15: ffffc90003d47fc8
[ 182.465280][ C0] arch_do_signal_or_restart+0xd2e/0x1230
[ 182.465308][ C0] ? get_sigframe_size+0x10/0x10
[ 182.465334][ C0] ? exit_to_user_mode_loop+0x3b/0x110
[ 182.465360][ C0] exit_to_user_mode_loop+0x70/0x110
[ 182.465383][ C0] exit_to_user_mode_prepare+0xee/0x180
[ 182.465407][ C0] syscall_exit_to_user_mode+0x16/0x40
[ 182.465430][ C0] do_syscall_64+0x58/0xa0
[ 182.465448][ C0] ? clear_bhb_loop+0x60/0xb0
[ 182.465465][ C0] ? clear_bhb_loop+0x60/0xb0
[ 182.465483][ C0] entry_SYSCALL_64_after_hwframe+0x68/0xd2
[ 182.465499][ C0] RIP: 0033:0x7fa4e7e70fc7
[ 182.465521][ C0] Code: 14 25 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 1c 00 00 90 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 b0 ff ff ff f7 d8 64 89
[ 182.465534][ C0] RSP: 002b:00007fa4e7e29178 EFLAGS: 00000246
[ 182.465546][ C0] RAX: 00000000000000ca RBX: 00007fa4e7ef3308 RCX: 00007fa4e7e70fc9
[ 182.465557][ C0] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fa4e7ef3308
[ 182.465567][ C0] RBP: 00007fa4e7ef3300 R08: 00007fa4e7e296c0 R09: 00007fa4e7e296c0
[ 182.465579][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa4e7ef330c
[ 182.465589][ C0] R13: 0000000000000000 R14: 00007ffc38e72650 R15: 00007ffc38e72738
[ 182.465606][ C0]