Warning: Permanently added '10.128.1.84' (ED25519) to the list of known hosts. executing program [ 427.325983][ T30] audit: type=1400 audit(1716761110.862:66): avc: denied { execmem } for pid=693 comm="syz-executor283" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 527.350070][ C0] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 527.356870][ C0] (detected by 0, t=10002 jiffies, g=3949, q=104) [ 527.363196][ C0] rcu: All QSes seen, last rcu_preempt kthread activity 10003 (4294989951-4294979948), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 527.376389][ C0] rcu: rcu_preempt kthread starved for 10004 jiffies! g3949 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 527.387408][ C0] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. [ 527.397222][ C0] rcu: RCU grace-period kthread stack dump: [ 527.402954][ C0] task:rcu_preempt state:R running task stack:28328 pid: 14 ppid: 2 flags:0x00004000 [ 527.413546][ C0] Call Trace: [ 527.416660][ C0] [ 527.419445][ C0] __schedule+0xccc/0x1590 [ 527.423778][ C0] ? __sched_text_start+0x8/0x8 [ 527.428553][ C0] ? __kasan_check_write+0x14/0x20 [ 527.433873][ C0] schedule+0x11f/0x1e0 [ 527.437884][ C0] schedule_timeout+0x18c/0x370 [ 527.442584][ C0] ? _raw_spin_unlock_irq+0x4e/0x70 [ 527.447693][ C0] ? console_conditional_schedule+0x30/0x30 [ 527.453686][ C0] ? update_process_times+0x200/0x200 [ 527.458896][ C0] ? prepare_to_swait_event+0x308/0x320 [ 527.464278][ C0] rcu_gp_fqs_loop+0x2af/0xf80 [ 527.469203][ C0] ? debug_smp_processor_id+0x17/0x20 [ 527.474708][ C0] ? __note_gp_changes+0x4ab/0x920 [ 527.480051][ C0] ? rcu_gp_init+0xc30/0xc30 [ 527.484698][ C0] ? _raw_spin_unlock_irq+0x4e/0x70 [ 527.489812][ C0] ? rcu_gp_init+0x9cf/0xc30 [ 527.494419][ C0] rcu_gp_kthread+0xa4/0x350 [ 527.498932][ C0] ? _raw_spin_lock+0x1b0/0x1b0 [ 527.503875][ C0] ? wake_nocb_gp+0x1e0/0x1e0 [ 527.508382][ C0] ? __kasan_check_read+0x11/0x20 [ 527.513370][ C0] ? __kthread_parkme+0xb2/0x200 [ 527.518140][ C0] kthread+0x421/0x510 [ 527.522050][ C0] ? wake_nocb_gp+0x1e0/0x1e0 [ 527.526657][ C0] ? kthread_blkcg+0xd0/0xd0 [ 527.531234][ C0] ret_from_fork+0x1f/0x30 [ 527.535552][ C0] [ 527.538413][ C0] rcu: Stack dump where RCU GP kthread last ran: [ 527.544767][ C0] NMI backtrace for cpu 0 [ 527.549013][ C0] CPU: 0 PID: 706 Comm: syz-executor283 Not tainted 5.15.149-syzkaller-00055-g424f92bcbe8f #0 [ 527.559211][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 [ 527.569187][ C0] Call Trace: [ 527.572659][ C0] [ 527.575349][ C0] dump_stack_lvl+0x151/0x1b7 [ 527.579883][ C0] ? io_uring_drop_tctx_refs+0x190/0x190 [ 527.585326][ C0] dump_stack+0x15/0x17 [ 527.589580][ C0] nmi_cpu_backtrace+0x2f7/0x300 [ 527.594459][ C0] ? nmi_trigger_cpumask_backtrace+0x270/0x270 [ 527.600719][ C0] ? panic+0x751/0x751 [ 527.604714][ C0] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 527.610790][ C0] nmi_trigger_cpumask_backtrace+0x15d/0x270 [ 527.616690][ C0] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 527.622853][ C0] arch_trigger_cpumask_backtrace+0x10/0x20 [ 527.628582][ C0] rcu_check_gp_kthread_starvation+0x1e3/0x250 [ 527.634571][ C0] print_other_cpu_stall+0x112d/0x1340 [ 527.639866][ C0] ? try_invoke_on_locked_down_task+0x2a0/0x2a0 [ 527.645951][ C0] ? print_cpu_stall+0x5f0/0x5f0 [ 527.650838][ C0] ? __kasan_check_write+0x14/0x20 [ 527.656312][ C0] rcu_sched_clock_irq+0xaec/0x12f0 [ 527.661339][ C0] ? rcu_boost_kthread_setaffinity+0x340/0x340 [ 527.667329][ C0] ? hrtimer_run_queues+0x15f/0x440 [ 527.672718][ C0] update_process_times+0x198/0x200 [ 527.677748][ C0] tick_sched_timer+0x188/0x240 [ 527.682434][ C0] ? tick_setup_sched_timer+0x480/0x480 [ 527.687817][ C0] __hrtimer_run_queues+0x41a/0xad0 [ 527.692965][ C0] ? hrtimer_interrupt+0xaa0/0xaa0 [ 527.698336][ C0] ? clockevents_program_event+0x22f/0x300 [ 527.704047][ C0] ? ktime_get_update_offsets_now+0x2ba/0x2d0 [ 527.709967][ C0] hrtimer_interrupt+0x40c/0xaa0 [ 527.714815][ C0] __sysvec_apic_timer_interrupt+0xfd/0x3c0 [ 527.720628][ C0] sysvec_apic_timer_interrupt+0x95/0xc0 [ 527.726097][ C0] [ 527.729082][ C0] [ 527.731821][ C0] asm_sysvec_apic_timer_interrupt+0x1b/0x20 [ 527.737650][ C0] RIP: 0010:_raw_spin_unlock_irq+0x49/0x70 [ 527.743467][ C0] Code: 08 00 74 0c 48 c7 c7 d8 54 8d 86 e8 c1 53 e9 fc 48 83 3d b1 3a c4 01 00 74 2a 48 89 df e8 23 cc 8b fc 66 90 fb bf 01 00 00 00 a2 0f 83 fc 65 8b 05 43 53 39 7b 85 c0 74 03 5b 5d c3 e8 43 67 [ 527.762892][ C0] RSP: 0018:ffffc90000a77bb8 EFLAGS: 00000246 [ 527.768880][ C0] RAX: 0000000000000001 RBX: ffff8881202c5780 RCX: dffffc0000000000 [ 527.776698][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 [ 527.784750][ C0] RBP: ffffc90000a77bc0 R08: ffffffff81456dfa R09: fffff5200014efc0 [ 527.792561][ C0] R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881202c5780 [ 527.800546][ C0] R13: ffff8881202c5ba0 R14: 0000000000000021 R15: dffffc0000000000 [ 527.808453][ C0] ? get_signal+0x151a/0x1630 [ 527.812958][ C0] ? _raw_spin_unlock_irq+0x41/0x70 [ 527.817994][ C0] get_signal+0x1562/0x1630 [ 527.822419][ C0] arch_do_signal_or_restart+0xbd/0x1680 [ 527.827885][ C0] ? __do_compat_sys_x32_rt_sigreturn+0x1e0/0x1e0 [ 527.834223][ C0] ? _raw_spin_lock_irq+0xa5/0x1b0 [ 527.839256][ C0] ? __kasan_check_write+0x14/0x20 [ 527.844202][ C0] ? _copy_from_user+0x96/0xd0 [ 527.848888][ C0] ? restore_altstack+0x274/0x400 [ 527.853752][ C0] ? get_sigframe_size+0x10/0x10 [ 527.858614][ C0] ? __ia32_sys_sigaltstack+0x70/0x70 [ 527.864338][ C0] ? __do_sys_rt_sigreturn+0x160/0x1e0 [ 527.869625][ C0] exit_to_user_mode_loop+0xa0/0xe0 [ 527.874745][ C0] exit_to_user_mode_prepare+0x5a/0xa0 [ 527.880115][ C0] syscall_exit_to_user_mode+0x26/0x160 [ 527.885497][ C0] do_syscall_64+0x49/0xb0 [ 527.889999][ C0] ? sysvec_apic_timer_interrupt+0x55/0xc0 [ 527.896404][ C0] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 527.902145][ C0] RIP: 0033:0x7fe6e07e4417 [ 527.906383][ C0] 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 [ 527.925921][ C0] RSP: 002b:00007fe6e07a5238 EFLAGS: 00000246 [ 527.931814][ C0] RAX: 00000000000000ca RBX: 00007fe6e086e308 RCX: 00007fe6e07e4419 [ 527.939624][ C0] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fe6e086e308 [ 527.947561][ C0] RBP: 00007fe6e086e300 R08: 00007fe6e07a56c0 R09: 00007fe6e07a56c0 [ 527.955706][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe6e086e30c [ 527.963512][ C0] R13: 0000000000000000 R14: 00007fffe9093d30 R15: 00007fffe9093e18 [ 527.971343][ C0] [ 572.170061][ C0] BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 144s! [ 572.178830][ C0] Showing busy workqueues and worker pools: [ 572.184664][ C0] workqueue events: flags=0x0 [ 572.189135][ C0] pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=2/256 refcnt=3 [ 572.189184][ C0] pending: vmstat_shepherd, psi_avgs_work [ 572.189231][ C0] workqueue events_unbound: flags=0x2 [ 572.207797][ C0] pwq 4: cpus=0-1 flags=0x4 nice=0 active=2/512 refcnt=4 [ 572.207839][ C0] pending: toggle_allocation_gate, flush_memcg_stats_dwork [ 572.207887][ C0] workqueue events_power_efficient: flags=0x80 [ 572.228203][ C0] pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 [ 572.228248][ C0] pending: neigh_periodic_work [ 572.228277][ C0] pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=3/256 refcnt=4 [ 572.228316][ C0] pending: gc_worker, neigh_periodic_work, check_lifetime [ 572.228375][ C0] workqueue mm_percpu_wq: flags=0x8 [ 572.261531][ C0] pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 [ 572.261581][ C0] pending: vmstat_update [ 572.261617][ C0] workqueue writeback: flags=0x4a [ 572.278773][ C0] pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/256 refcnt=3 [ 572.278816][ C0] pending: wb_workfn [ 572.278845][ C0] workqueue kblockd: flags=0x18 [ 572.294584][ C0] pwq 1: cpus=0 node=0 flags=0x0 nice=-20 active=1/256 refcnt=2 [ 572.294630][ C0] pending: blk_mq_timeout_work [ 572.294663][ C0] workqueue dm_bufio_cache: flags=0x8 [ 572.312891][ C0] pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 [ 572.312936][ C0] pending: work_fn [ 572.312964][ C0] workqueue ipv6_addrconf: flags=0x40008 [ 572.330836][ C0] pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/1 refcnt=2 [ 572.330892][ C0] pending: addrconf_verify_work