Warning: Permanently added '10.128.1.184' (ED25519) to the list of known hosts. executing program executing program [ 324.489002][ C1] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 324.496024][ C1] (detected by 1, t=10502 jiffies, g=3465, q=234) [ 324.502518][ C1] rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4294969592-4294959090), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 324.515869][ C1] rcu: rcu_preempt kthread starved for 10502 jiffies! g3465 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 324.526965][ C1] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. [ 324.536920][ C1] rcu: RCU grace-period kthread stack dump: [ 324.542801][ C1] task:rcu_preempt state:R running task stack:27064 pid: 15 ppid: 2 flags:0x00004000 [ 324.553574][ C1] Call Trace: [ 324.556854][ C1] [ 324.559776][ C1] __schedule+0x12c4/0x45b0 [ 324.564294][ C1] ? _raw_spin_unlock_irqrestore+0x8b/0x130 [ 324.570183][ C1] ? _raw_spin_unlock_irqrestore+0xd9/0x130 [ 324.576083][ C1] ? __mod_timer+0xa8e/0xeb0 [ 324.580672][ C1] ? release_firmware_map_entry+0x190/0x190 [ 324.586559][ C1] ? mod_timer_pending+0x20/0x20 [ 324.591492][ C1] ? lockdep_softirqs_off+0x420/0x420 [ 324.596860][ C1] schedule+0x11b/0x1f0 [ 324.601010][ C1] schedule_timeout+0x1b9/0x300 [ 324.605853][ C1] ? console_conditional_schedule+0x40/0x40 [ 324.611739][ C1] ? update_process_times+0x200/0x200 [ 324.617111][ C1] ? prepare_to_swait_event+0x321/0x340 [ 324.622651][ C1] rcu_gp_fqs_loop+0x2bf/0x1080 [ 324.627497][ C1] ? _raw_spin_unlock_irq+0x1f/0x40 [ 324.632691][ C1] ? lockdep_hardirqs_on+0x94/0x130 [ 324.637884][ C1] ? rcu_gp_init+0xdae/0x1140 [ 324.642553][ C1] ? rcu_gp_init+0x1140/0x1140 [ 324.647310][ C1] ? finish_swait+0xc5/0x1d0 [ 324.651894][ C1] rcu_gp_kthread+0xa4/0x360 [ 324.656478][ C1] ? _raw_spin_unlock+0x40/0x40 [ 324.661322][ C1] ? rcu_report_qs_rsp+0x1a0/0x1a0 [ 324.666424][ C1] ? _raw_spin_unlock_irqrestore+0xd9/0x130 [ 324.672325][ C1] ? __kthread_parkme+0x15c/0x1c0 [ 324.677365][ C1] kthread+0x3f6/0x4f0 [ 324.681432][ C1] ? rcu_report_qs_rsp+0x1a0/0x1a0 [ 324.686540][ C1] ? kthread_blkcg+0xd0/0xd0 [ 324.691123][ C1] ret_from_fork+0x1f/0x30 [ 324.695544][ C1] [ 324.698552][ C1] rcu: Stack dump where RCU GP kthread last ran: [ 324.704871][ C1] NMI backtrace for cpu 1 [ 324.709200][ C1] CPU: 1 PID: 3614 Comm: syz-executor312 Not tainted 5.15.166-syzkaller #0 [ 324.717775][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 [ 324.727816][ C1] Call Trace: [ 324.731084][ C1] [ 324.733919][ C1] dump_stack_lvl+0x1e3/0x2d0 [ 324.738593][ C1] ? io_uring_drop_tctx_refs+0x1a0/0x1a0 [ 324.744219][ C1] ? panic+0x860/0x860 [ 324.748291][ C1] nmi_cpu_backtrace+0x46a/0x4a0 [ 324.753220][ C1] ? __wake_up_klogd+0xd5/0x100 [ 324.758069][ C1] ? nmi_trigger_cpumask_backtrace+0x2a0/0x2a0 [ 324.764216][ C1] ? _printk+0xd1/0x120 [ 324.768369][ C1] ? cpu_online+0x1f/0x40 [ 324.772690][ C1] ? panic+0x860/0x860 [ 324.776754][ C1] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 324.782812][ C1] nmi_trigger_cpumask_backtrace+0x181/0x2a0 [ 324.788786][ C1] rcu_check_gp_kthread_starvation+0x1d2/0x240 [ 324.794937][ C1] print_other_cpu_stall+0x137a/0x14d0 [ 324.800411][ C1] ? print_cpu_stall+0x600/0x600 [ 324.805371][ C1] ? do_raw_spin_unlock+0x137/0x8b0 [ 324.810571][ C1] rcu_sched_clock_irq+0xa38/0x1150 [ 324.815769][ C1] ? rcutree_dead_cpu+0x20/0x20 [ 324.820617][ C1] ? hrtimer_run_queues+0x163/0x450 [ 324.825809][ C1] ? account_process_tick+0x232/0x3a0 [ 324.831191][ C1] update_process_times+0x196/0x200 [ 324.836388][ C1] tick_sched_timer+0x386/0x550 [ 324.841232][ C1] ? tick_setup_sched_timer+0x2d0/0x2d0 [ 324.846772][ C1] __hrtimer_run_queues+0x55b/0xcf0 [ 324.851974][ C1] ? hrtimer_interrupt+0x980/0x980 [ 324.857082][ C1] ? ktime_get_update_offsets_now+0x407/0x420 [ 324.863156][ C1] hrtimer_interrupt+0x392/0x980 [ 324.868122][ C1] __sysvec_apic_timer_interrupt+0x139/0x470 [ 324.874105][ C1] sysvec_apic_timer_interrupt+0x8c/0xb0 [ 324.879737][ C1] [ 324.882659][ C1] [ 324.885578][ C1] asm_sysvec_apic_timer_interrupt+0x16/0x20 [ 324.891564][ C1] RIP: 0010:__local_bh_disable_ip+0x73/0x210 [ 324.897544][ C1] Code: 48 c7 44 24 28 8b a3 19 8c 48 c7 44 24 30 70 7b 4d 81 4c 8d 6c 24 20 49 c1 ed 03 48 b8 f1 f1 f1 f1 00 f2 f2 f2 4b 89 44 25 00 <66> 43 c7 44 25 09 f3 f3 43 c6 44 25 0b f3 65 8b 05 d0 f3 b4 7e a9 [ 324.917143][ C1] RSP: 0018:ffffc90002e77b80 EFLAGS: 00000a06 [ 324.923207][ C1] RAX: f2f2f200f1f1f1f1 RBX: 0000000000000000 RCX: ffff8880762ebb80 [ 324.931256][ C1] RDX: 0000000000000000 RSI: 0000000000000200 RDI: ffffffff812f1035 [ 324.939216][ C1] RBP: ffffc90002e77c58 R08: ffffffff815082f4 R09: fffffbfff1bd2b66 [ 324.947177][ C1] R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 [ 324.955137][ C1] R13: 1ffff920005cef74 R14: ffffc90002e77be0 R15: 0000000000000200 [ 324.963108][ C1] ? copy_siginfo_to_user+0x64/0x80 [ 324.968305][ C1] ? local_bh_disable+0x5/0x20 [ 324.973089][ C1] ? __lock_acquire+0x1ff0/0x1ff0 [ 324.978103][ C1] ? local_bh_disable+0x5/0x20 [ 324.982858][ C1] ? __bpf_trace_softirq+0x10/0x10 [ 324.987965][ C1] ? __might_fault+0xb4/0x110 [ 324.992639][ C1] fpu__clear_user_states+0x34/0x260 [ 324.997919][ C1] arch_do_signal_or_restart+0x1488/0x1890 [ 325.003738][ C1] ? get_sigframe_size+0x10/0x10 [ 325.008668][ C1] ? __ia32_sys_sigaltstack+0x60/0x60 [ 325.014047][ C1] ? __do_sys_rt_sigreturn+0x19d/0x250 [ 325.019503][ C1] ? exit_to_user_mode_loop+0x39/0x130 [ 325.024955][ C1] exit_to_user_mode_loop+0x97/0x130 [ 325.030233][ C1] exit_to_user_mode_prepare+0xb1/0x140 [ 325.035769][ C1] syscall_exit_to_user_mode+0x5d/0x240 [ 325.041309][ C1] do_syscall_64+0x47/0xb0 [ 325.045713][ C1] ? clear_bhb_loop+0x15/0x70 [ 325.050380][ C1] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 325.056268][ C1] RIP: 0033:0x7f98dfa864b0 [ 325.060689][ C1] Code: 83 c0 16 83 e0 f7 74 12 50 48 8d 3d 3a 05 03 00 e8 45 ea fa ff 0f 1f 44 00 00 c3 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 <83> ff 21 74 0b c3 66 2e 0f 1f 84 00 00 00 00 00 55 53 48 89 f3 48 [ 325.080284][ C1] RSP: 002b:00007ffc9d159cb8 EFLAGS: 00000246 [ 325.086345][ C1] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 00007f98dfa5e379 [ 325.094305][ C1] RDX: 00007ffc9d159cc0 RSI: 00007ffc9d159df0 RDI: 0000000000000021 [ 325.102267][ C1] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 325.110226][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f98dfab51d4 [ 325.118187][ C1] R13: 00007ffc9d15a550 R14: 00007ffc9d15a280 R15: 0000000000000000 [ 325.126164][ C1]