Warning: Permanently added '10.128.1.26' (ED25519) to the list of known hosts. [ 249.429411][ T27] audit: type=1400 audit(1704436231.344:83): avc: denied { execmem } for pid=5078 comm="syz-executor111" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 361.794541][ C0] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 361.801662][ C0] rcu: (detected by 0, t=10502 jiffies, g=8025, q=3 ncpus=2) [ 361.809135][ C0] rcu: All QSes seen, last rcu_preempt kthread activity 10495 (4294973255-4294962760), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 361.822517][ C0] rcu: rcu_preempt kthread starved for 10496 jiffies! g8025 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 361.833641][ C0] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. [ 361.843807][ C0] rcu: RCU grace-period kthread stack dump: [ 361.849701][ C0] task:rcu_preempt state:R running task stack:28336 pid:16 tgid:16 ppid:2 flags:0x00004000 [ 361.861460][ C0] Call Trace: [ 361.864751][ C0] [ 361.867703][ C0] __schedule+0xedb/0x5af0 [ 361.872245][ C0] ? lockdep_hardirqs_on_prepare+0x420/0x420 [ 361.878345][ C0] ? io_schedule_timeout+0x150/0x150 [ 361.883672][ C0] ? schedule+0x1fc/0x270 [ 361.888212][ C0] ? reacquire_held_locks+0x4c0/0x4c0 [ 361.893625][ C0] ? timer_fixup_activate+0x220/0x220 [ 361.899029][ C0] ? lockdep_init_map_type+0x16d/0x7d0 [ 361.904518][ C0] schedule+0xe9/0x270 [ 361.908612][ C0] schedule_timeout+0x137/0x290 [ 361.913542][ C0] ? usleep_range_state+0x1a0/0x1a0 [ 361.918761][ C0] ? do_init_timer+0x100/0x100 [ 361.923551][ C0] ? _raw_spin_unlock_irqrestore+0x3b/0x70 [ 361.929413][ C0] ? prepare_to_swait_event+0xf4/0x470 [ 361.934914][ C0] rcu_gp_fqs_loop+0x1ec/0xb10 [ 361.939705][ C0] ? rcu_check_gp_kthread_starvation+0x450/0x450 [ 361.946065][ C0] ? reacquire_held_locks+0x4c0/0x4c0 [ 361.951473][ C0] rcu_gp_kthread+0x24b/0x380 [ 361.956181][ C0] ? rcu_gp_init+0x1510/0x1510 [ 361.960968][ C0] ? lockdep_hardirqs_on+0x7d/0x110 [ 361.966275][ C0] ? __kthread_parkme+0x14b/0x220 [ 361.971354][ C0] ? rcu_gp_init+0x1510/0x1510 [ 361.976148][ C0] kthread+0x2c6/0x3a0 [ 361.980247][ C0] ? _raw_spin_unlock_irq+0x23/0x50 [ 361.985474][ C0] ? kthread_complete_and_exit+0x40/0x40 [ 361.991137][ C0] ret_from_fork+0x45/0x80 [ 361.995616][ C0] ? kthread_complete_and_exit+0x40/0x40 [ 362.001276][ C0] ret_from_fork_asm+0x11/0x20 [ 362.006085][ C0] [ 362.009113][ C0] rcu: Stack dump where RCU GP kthread last ran: [ 362.015443][ C0] Sending NMI from CPU 0 to CPUs 1: [ 362.020658][ C1] NMI backtrace for cpu 1 [ 362.020668][ C1] CPU: 1 PID: 5158 Comm: syz-executor111 Not tainted 6.7.0-rc8-syzkaller-00055-g5eff55d725a4 #0 [ 362.020690][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 [ 362.020700][ C1] RIP: 0010:rcu_is_watching+0x12/0xb0 [ 362.020726][ C1] Code: 37 ce 8a e8 20 a4 10 09 65 8a 05 75 1a 95 7e 0f b6 c0 c3 0f 1f 44 00 00 f3 0f 1e fa 55 53 65 ff 05 bb ff 94 7e e8 de a3 10 09 <48> c7 c3 e8 6d 03 00 83 f8 07 89 c5 77 7a 48 8d 3c ed 60 da a6 8c [ 362.020745][ C1] RSP: 0018:ffffc900003f8db0 EFLAGS: 00000096 [ 362.020761][ C1] RAX: 0000000000000001 RBX: 1ffff9200007f1bb RCX: ffffffff8166f667 [ 362.020775][ C1] RDX: fffffbfff1e30e3b RSI: ffffffff8b2ed8e0 RDI: ffffffff8b2ed920 [ 362.020788][ C1] RBP: 0000000000000001 R08: 0000000000000000 R09: fffffbfff1e30e3a [ 362.020801][ C1] R10: ffffffff8f1871d7 R11: 0000000000000001 R12: 0000000000000001 [ 362.020813][ C1] R13: 0000000000000000 R14: ffffffff8cfd4048 R15: 0000000000000000 [ 362.020825][ C1] FS: 00007f2df9df66c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 [ 362.020846][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 362.020859][ C1] CR2: 00007f2df9df5e40 CR3: 00000000200f0000 CR4: 00000000003506f0 [ 362.020872][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 362.020883][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 362.020896][ C1] Call Trace: [ 362.020903][ C1] [ 362.020909][ C1] ? show_regs+0x8f/0xa0 [ 362.020935][ C1] ? nmi_cpu_backtrace+0x1d4/0x390 [ 362.020994][ C1] ? nmi_cpu_backtrace_handler+0xc/0x10 [ 362.021030][ C1] ? nmi_handle+0x1a6/0x570 [ 362.021054][ C1] ? rcu_is_watching+0x12/0xb0 [ 362.021075][ C1] ? default_do_nmi+0x6a/0x160 [ 362.021103][ C1] ? exc_nmi+0x186/0x200 [ 362.021132][ C1] ? end_repeat_nmi+0xf/0x2a [ 362.021202][ C1] ? lock_acquire+0xb7/0x520 [ 362.021230][ C1] ? rcu_is_watching+0x12/0xb0 [ 362.021251][ C1] ? rcu_is_watching+0x12/0xb0 [ 362.021272][ C1] ? rcu_is_watching+0x12/0xb0 [ 362.021293][ C1] [ 362.021298][ C1] [ 362.021304][ C1] lock_acquire+0x464/0x520 [ 362.021332][ C1] ? lock_sync+0x190/0x190 [ 362.021358][ C1] ? hrtimer_interrupt+0x142/0x800 [ 362.021387][ C1] ? reacquire_held_locks+0x4c0/0x4c0 [ 362.021417][ C1] ? lock_sync+0x190/0x190 [ 362.021444][ C1] ktime_get_update_offsets_now+0x134/0x610 [ 362.021466][ C1] ? hrtimer_interrupt+0x142/0x800 [ 362.021497][ C1] hrtimer_interrupt+0x142/0x800 [ 362.021527][ C1] ? asym_cpu_capacity_scan+0x650/0x650 [ 362.021559][ C1] __sysvec_apic_timer_interrupt+0x105/0x400 [ 362.021587][ C1] sysvec_apic_timer_interrupt+0x90/0xb0 [ 362.021635][ C1] [ 362.021640][ C1] [ 362.021646][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 362.021667][ C1] RIP: 0010:_raw_spin_unlock_irq+0x29/0x50 [ 362.021691][ C1] Code: 90 f3 0f 1e fa 53 48 8b 74 24 08 48 89 fb 48 83 c7 18 e8 5a 0b e4 f6 48 89 df e8 42 83 e4 f6 e8 dd 3e 0a f7 fb bf 01 00 00 00 02 3c d6 f6 65 8b 05 83 e1 80 75 85 c0 74 02 5b c3 e8 10 a5 7d [ 362.021709][ C1] RSP: 0018:ffffc9000363fd00 EFLAGS: 00000202 [ 362.021724][ C1] RAX: 0000000003bc06e3 RBX: ffff888074429580 RCX: 1ffffffff1e307e9 [ 362.021737][ C1] RDX: 0000000000000000 RSI: ffffffff8acc9f40 RDI: 0000000000000001 [ 362.021749][ C1] RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001 [ 362.021760][ C1] R10: ffffffff8f1871d7 R11: 0000000000000000 R12: ffff888074429a18 [ 362.021773][ C1] R13: 0000000000000021 R14: ffff888074429980 R15: 1ffff920006c7faf [ 362.021791][ C1] get_signal+0x1899/0x2790 [ 362.021815][ C1] ? exit_signals+0x960/0x960 [ 362.021836][ C1] ? do_sigaltstack.constprop.0+0x550/0x810 [ 362.021869][ C1] arch_do_signal_or_restart+0x90/0x7f0 [ 362.021899][ C1] ? get_sigframe_size+0x20/0x20 [ 362.021929][ C1] ? __do_sys_rt_sigreturn+0x168/0x230 [ 362.021960][ C1] exit_to_user_mode_prepare+0x121/0x240 [ 362.021985][ C1] syscall_exit_to_user_mode+0x1e/0x60 [ 362.022017][ C1] do_syscall_64+0x4d/0x110 [ 362.022041][ C1] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 362.022093][ C1] RIP: 0033:0x7f2df9e56417 [ 362.022107][ C1] Code: 14 25 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 18 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 [ 362.022125][ C1] RSP: 002b:00007f2df9df6238 EFLAGS: 00000246 [ 362.022143][ C1] RAX: 00000000000000ca RBX: 00007f2df9ee0318 RCX: 00007f2df9e56419 [ 362.022156][ C1] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f2df9ee0318 [ 362.022168][ C1] RBP: 00007f2df9ee0310 R08: 00007f2df9df66c0 R09: 00007f2df9df66c0 [ 362.022181][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f2df9ee031c [ 362.022193][ C1] R13: 000000000000006e R14: 00007ffd667654c0 R15: 00007ffd667655a8 [ 362.022209][ C1] [ 362.022216][ C1] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.558 msecs