Warning: Permanently added '10.128.0.162' (ED25519) to the list of known hosts. executing program executing program executing program executing program executing program [ 186.421571][ C0] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 186.428708][ C0] rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P4252/1:b..l [ 186.436943][ C0] (detected by 0, t=10503 jiffies, g=7841, q=37 ncpus=2) [ 186.444092][ C0] task:syz-executor920 state:R running task stack:25864 pid:4252 ppid:4247 flags:0x00004002 [ 186.455392][ C0] Call Trace: [ 186.458698][ C0] [ 186.461656][ C0] __schedule+0x143f/0x4570 [ 186.466250][ C0] ? release_firmware_map_entry+0x18b/0x18b [ 186.472195][ C0] ? preempt_schedule+0xd9/0xe0 [ 186.477122][ C0] preempt_schedule_common+0x83/0xd0 [ 186.482457][ C0] preempt_schedule+0xd9/0xe0 [ 186.487171][ C0] ? schedule_preempt_disabled+0x20/0x20 [ 186.492839][ C0] ? do_set_pte+0x584/0x590 [ 186.497384][ C0] preempt_schedule_thunk+0x16/0x18 [ 186.502644][ C0] _raw_spin_unlock+0x36/0x40 [ 186.507403][ C0] filemap_map_pages+0xffa/0x12c0 [ 186.512479][ C0] ? filemap_map_pages+0x277/0x12c0 [ 186.517773][ C0] ? filemap_read_folio+0x780/0x780 [ 186.523002][ C0] ? count_memcg_event_mm+0x90/0x410 [ 186.528343][ C0] ? mtree_range_walk+0x673/0x7c0 [ 186.533426][ C0] handle_mm_fault+0x33e0/0x5340 [ 186.538409][ C0] ? mt_find+0x29a/0xc60 [ 186.542697][ C0] ? mt_find+0x29a/0xc60 [ 186.547015][ C0] ? numa_migrate_prep+0x250/0x250 [ 186.552225][ C0] ? lock_mm_and_find_vma+0xae/0x2e0 [ 186.557580][ C0] exc_page_fault+0x26f/0x620 [ 186.562318][ C0] asm_exc_page_fault+0x22/0x30 [ 186.567221][ C0] RIP: 0033:0x7fc09c4a2c00 [ 186.571696][ C0] RSP: 002b:00007ffea8070988 EFLAGS: 00010246 [ 186.577799][ C0] RAX: 00007fc09c45c9d0 RBX: 00007fc09c45c6c0 RCX: 00007fc09c49bd07 [ 186.585804][ C0] RDX: 0000000000000003 RSI: 0000000000020000 RDI: 00007fc09c45c6c0 [ 186.593800][ C0] RBP: 0000000000000000 R08: 00000000ffffffff R09: 0000000000000000 [ 186.601796][ C0] R10: 0000000000021000 R11: 0000000000000206 R12: 00007ffea8070b60 [ 186.609789][ C0] R13: ffffffffffffffc0 R14: 0000000000001000 R15: 0000000000000000 [ 186.617802][ C0] [ 186.620853][ C0] rcu: rcu_preempt kthread starved for 10519 jiffies! g7841 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 186.631988][ C0] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. [ 186.641978][ C0] rcu: RCU grace-period kthread stack dump: [ 186.647888][ C0] task:rcu_preempt state:R running task stack:25592 pid:16 ppid:2 flags:0x00004000 [ 186.658703][ C0] Call Trace: [ 186.662004][ C0] [ 186.664961][ C0] __schedule+0x143f/0x4570 [ 186.669502][ C0] ? _raw_spin_unlock+0x40/0x40 [ 186.674396][ C0] ? __mod_timer+0x956/0xee0 [ 186.679024][ C0] ? release_firmware_map_entry+0x18b/0x18b [ 186.684953][ C0] ? lockdep_softirqs_off+0x420/0x420 [ 186.690364][ C0] ? _raw_spin_unlock_irqrestore+0xd9/0x130 [ 186.696286][ C0] ? _raw_spin_unlock+0x40/0x40 [ 186.701170][ C0] schedule+0xbf/0x180 [ 186.705279][ C0] schedule_timeout+0x1b9/0x300 [ 186.710157][ C0] ? console_conditional_schedule+0x40/0x40 [ 186.716077][ C0] ? update_process_times+0x1b0/0x1b0 [ 186.721489][ C0] ? prepare_to_swait_event+0x329/0x350 [ 186.727091][ C0] rcu_gp_fqs_loop+0x2d2/0x1150 [ 186.731987][ C0] ? dump_blkd_tasks+0x810/0x810 [ 186.736959][ C0] ? lockdep_hardirqs_on+0x94/0x130 [ 186.742192][ C0] ? rcu_gp_init+0x15f0/0x15f0 [ 186.746983][ C0] ? _raw_spin_unlock_irqrestore+0xd9/0x130 [ 186.752911][ C0] ? finish_swait+0xcf/0x1e0 [ 186.757541][ C0] rcu_gp_kthread+0xa3/0x3b0 [ 186.762165][ C0] ? rcu_report_qs_rsp+0x1a0/0x1a0 [ 186.767303][ C0] ? _raw_spin_unlock_irqrestore+0xd9/0x130 [ 186.773235][ C0] ? __kthread_parkme+0x168/0x1c0 [ 186.778302][ C0] kthread+0x28d/0x320 [ 186.782405][ C0] ? rcu_report_qs_rsp+0x1a0/0x1a0 [ 186.787980][ C0] ? kthread_blkcg+0xd0/0xd0 [ 186.792597][ C0] ret_from_fork+0x1f/0x30 [ 186.797060][ C0] [ 186.800101][ C0] rcu: Stack dump where RCU GP kthread last ran: [ 186.806451][ C0] Sending NMI from CPU 0 to CPUs 1: [ 186.811683][ C1] NMI backtrace for cpu 1 [ 186.811704][ C1] CPU: 1 PID: 4255 Comm: syz-executor920 Not tainted 6.1.132-syzkaller #0 [ 186.811722][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 [ 186.811732][ C1] RIP: 0010:__rcu_read_unlock+0x2f/0x100 [ 186.811760][ C1] Code: 41 55 41 54 53 49 bc 00 00 00 00 00 fc ff df 65 4c 8b 35 54 0a 8e 7e 4d 8d ae 3c 04 00 00 4c 89 eb 48 c1 eb 03 42 0f b6 04 23 <84> c0 75 61 41 8b 6d 00 ff cd 42 0f b6 04 23 84 c0 75 69 41 89 6d [ 186.811775][ C1] RSP: 0018:ffffc900001e0ba0 EFLAGS: 00000807 [ 186.811790][ C1] RAX: 0000000000000000 RBX: 1ffff110049d4baf RCX: ffff888024ea5940 [ 186.811803][ C1] RDX: 0000000000010000 RSI: ffffffff8b5f70c0 RDI: ffffffff8b5f7080 [ 186.811815][ C1] RBP: ffffc900001e0c80 R08: ffffffff81568232 R09: 0000000000000003 [ 186.811827][ C1] R10: ffffffffffffffff R11: dffffc0000000001 R12: dffffc0000000000 [ 186.811840][ C1] R13: ffff888024ea5d7c R14: ffff888024ea5940 R15: 1ffff9200003c190 [ 186.811853][ C1] FS: 00007fc09c45c6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 [ 186.811868][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 186.811880][ C1] CR2: 00007fc09c45be40 CR3: 00000000729ed000 CR4: 00000000003506e0 [ 186.811895][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 186.811905][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 186.811915][ C1] Call Trace: [ 186.811922][ C1] [ 186.811928][ C1] ? nmi_cpu_backtrace+0x3de/0x560 [ 186.811946][ C1] ? read_lock_is_recursive+0x10/0x10 [ 186.811974][ C1] ? nmi_trigger_cpumask_backtrace+0x430/0x430 [ 186.811992][ C1] ? nmi_handle+0x25/0x440 [ 186.812025][ C1] ? nmi_cpu_backtrace_handler+0x8/0x10 [ 186.812041][ C1] ? nmi_handle+0x12e/0x440 [ 186.812067][ C1] ? nmi_handle+0x25/0x440 [ 186.812092][ C1] ? __rcu_read_unlock+0x2f/0x100 [ 186.812131][ C1] ? default_do_nmi+0x62/0x150 [ 186.812150][ C1] ? exc_nmi+0xa8/0x100 [ 186.812167][ C1] ? end_repeat_nmi+0x16/0x31 [ 186.812191][ C1] ? __lock_task_sighand+0x222/0x2d0 [ 186.812217][ C1] ? __rcu_read_unlock+0x2f/0x100 [ 186.812236][ C1] ? __rcu_read_unlock+0x2f/0x100 [ 186.812256][ C1] ? __rcu_read_unlock+0x2f/0x100 [ 186.812275][ C1] [ 186.812280][ C1] [ 186.812284][ C1] ? __lock_task_sighand+0x25/0x2d0 [ 186.812309][ C1] __lock_task_sighand+0x2a1/0x2d0 [ 186.812332][ C1] ? __lock_task_sighand+0x25/0x2d0 [ 186.812358][ C1] send_sigqueue+0x1de/0x720 [ 186.812383][ C1] ? send_sigqueue+0x107/0x720 [ 186.812408][ C1] ? sigqueue_free+0x1e0/0x1e0 [ 186.812434][ C1] ? _raw_spin_unlock_irqrestore+0xd9/0x130 [ 186.812454][ C1] posix_timer_fn+0x186/0x390 [ 186.812477][ C1] ? common_timer_wait_running+0x10/0x10 [ 186.812498][ C1] __hrtimer_run_queues+0x5e5/0xe50 [ 186.812529][ C1] ? hrtimer_interrupt+0x980/0x980 [ 186.812550][ C1] ? ktime_get_update_offsets_now+0x407/0x420 [ 186.812579][ C1] hrtimer_interrupt+0x392/0x980 [ 186.812611][ C1] __sysvec_apic_timer_interrupt+0x158/0x5b0 [ 186.812637][ C1] sysvec_apic_timer_interrupt+0x9b/0xc0 [ 186.812658][ C1] [ 186.812663][ C1] [ 186.812668][ C1] asm_sysvec_apic_timer_interrupt+0x16/0x20 [ 186.812690][ C1] RIP: 0010:_raw_spin_unlock_irq+0x25/0x40 [ 186.812709][ C1] Code: f1 84 f5 ff 90 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 7e cb ae f6 48 89 df e8 e6 09 b0 f6 e8 a1 5b d5 f6 fb bf 01 00 00 00 f6 89 a2 f6 65 8b 05 b7 5f 46 75 85 c0 74 02 5b c3 e8 54 83 44 [ 186.812722][ C1] RSP: 0018:ffffc90003c67b30 EFLAGS: 00000286 [ 186.812735][ C1] RAX: df3dfad61937e100 RBX: ffff88802fa7d340 RCX: ffffffff973c2103 [ 186.812748][ C1] RDX: dffffc0000000000 RSI: ffffffff8b0c1dc0 RDI: 0000000000000001 [ 186.812760][ C1] RBP: ffffc90003c67c70 R08: dffffc0000000000 R09: ffffed1005f4fa69 [ 186.812772][ C1] R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff11005f4fafb [ 186.812784][ C1] R13: 000000001c000004 R14: 0000000000000021 R15: ffff88802fa7d7d8 [ 186.812804][ C1] get_signal+0x151f/0x17a0 [ 186.812836][ C1] ? ptrace_notify+0x370/0x370 [ 186.812866][ C1] arch_do_signal_or_restart+0xb0/0x1a10 [ 186.812886][ C1] ? __might_fault+0xa1/0x110 [ 186.812910][ C1] ? __lock_acquire+0x1f80/0x1f80 [ 186.812939][ C1] ? do_sigaltstack+0x3f3/0x610 [ 186.812961][ C1] ? get_sigframe_size+0x10/0x10 [ 186.812980][ C1] ? restore_altstack+0x107/0x150 [ 186.812999][ C1] ? lockdep_hardirqs_on_prepare+0x438/0x7a0 [ 186.813031][ C1] ? exit_to_user_mode_loop+0x39/0x100 [ 186.813050][ C1] exit_to_user_mode_loop+0x6a/0x100 [ 186.813068][ C1] exit_to_user_mode_prepare+0xb1/0x140 [ 186.813086][ C1] syscall_exit_to_user_mode+0x60/0x270 [ 186.813115][ C1] do_syscall_64+0x47/0xb0 [ 186.813131][ C1] ? clear_bhb_loop+0x45/0xa0 [ 186.813153][ C1] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 186.813173][ C1] RIP: 0033:0x7fc09c49bc47 [ 186.813187][ C1] Code: 14 25 28 00 00 00 75 05 48 83 c4 28 c3 e8 81 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 [ 186.813200][ C1] RSP: 002b:00007fc09c45c218 EFLAGS: 00000246 [ 186.813213][ C1] RAX: 00000000000000ca RBX: 00007fc09c5263c8 RCX: 00007fc09c49bc49 [ 186.813224][ C1] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fc09c5263c8 [ 186.813235][ C1] RBP: 00007fc09c5263c0 R08: 0000000000000000 R09: 0000000000000000 [ 186.813245][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000000140 [ 186.813256][ C1] R13: 000020000006b000 R14: 0000200000000100 R15: 0000200000000680 [ 186.813275][ C1] [ 186.813282][ C1] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.599 msecs