Warning: Permanently added '10.128.0.96' (ED25519) to the list of known hosts. executing program executing program executing program [ 621.210269][ T30] audit: type=1400 audit(1716239879.923:68): avc: denied { execmem } for pid=885 comm="syz-executor268" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 721.246292][ C1] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 721.253268][ C1] (detected by 1, t=10002 jiffies, g=5765, q=71) [ 721.259590][ C1] rcu: All QSes seen, last rcu_preempt kthread activity 10003 (4295009341-4294999338), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 721.272961][ C1] rcu: rcu_preempt kthread starved for 10004 jiffies! g5765 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 721.283892][ C1] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. [ 721.294136][ C1] rcu: RCU grace-period kthread stack dump: [ 721.299985][ C1] task:rcu_preempt state:R running task stack:28328 pid: 14 ppid: 2 flags:0x00004000 [ 721.311325][ C1] Call Trace: [ 721.314512][ C1] [ 721.317724][ C1] __schedule+0xccc/0x1590 [ 721.321973][ C1] ? __sched_text_start+0x8/0x8 [ 721.326681][ C1] schedule+0x11f/0x1e0 [ 721.330650][ C1] schedule_timeout+0x18c/0x370 [ 721.336141][ C1] ? _raw_spin_unlock_irq+0x4e/0x70 [ 721.341163][ C1] ? console_conditional_schedule+0x30/0x30 [ 721.346894][ C1] ? update_process_times+0x200/0x200 [ 721.352483][ C1] ? prepare_to_swait_event+0x308/0x320 [ 721.357871][ C1] rcu_gp_fqs_loop+0x2af/0xf80 [ 721.362469][ C1] ? debug_smp_processor_id+0x17/0x20 [ 721.367672][ C1] ? __note_gp_changes+0x4ab/0x920 [ 721.372619][ C1] ? rcu_gp_init+0xc30/0xc30 [ 721.377046][ C1] ? _raw_spin_unlock_irq+0x4e/0x70 [ 721.382083][ C1] ? rcu_gp_init+0x9cf/0xc30 [ 721.386754][ C1] rcu_gp_kthread+0xa4/0x350 [ 721.391149][ C1] ? _raw_spin_lock+0x1b0/0x1b0 [ 721.395921][ C1] ? rcu_barrier_callback+0x50/0x50 [ 721.400956][ C1] ? __kasan_check_read+0x11/0x20 [ 721.405909][ C1] ? __kthread_parkme+0xb2/0x200 [ 721.410678][ C1] kthread+0x421/0x510 [ 721.414585][ C1] ? rcu_barrier_callback+0x50/0x50 [ 721.419618][ C1] ? kthread_blkcg+0xd0/0xd0 [ 721.424041][ C1] ret_from_fork+0x1f/0x30 [ 721.428303][ C1] [ 721.431168][ C1] rcu: Stack dump where RCU GP kthread last ran: [ 721.437593][ C1] NMI backtrace for cpu 1 [ 721.441759][ C1] CPU: 1 PID: 897 Comm: syz-executor268 Not tainted 5.15.149-syzkaller-00490-g5d96939590c0 #0 [ 721.451814][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 721.461754][ C1] Call Trace: [ 721.464837][ C1] [ 721.467698][ C1] dump_stack_lvl+0x151/0x1b7 [ 721.472214][ C1] ? io_uring_drop_tctx_refs+0x190/0x190 [ 721.477681][ C1] dump_stack+0x15/0x17 [ 721.482142][ C1] nmi_cpu_backtrace+0x2f7/0x300 [ 721.486915][ C1] ? nmi_trigger_cpumask_backtrace+0x270/0x270 [ 721.492917][ C1] ? panic+0x751/0x751 [ 721.496900][ C1] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 721.502885][ C1] nmi_trigger_cpumask_backtrace+0x15d/0x270 [ 721.508696][ C1] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 721.514602][ C1] arch_trigger_cpumask_backtrace+0x10/0x20 [ 721.520408][ C1] rcu_check_gp_kthread_starvation+0x1e3/0x250 [ 721.526415][ C1] print_other_cpu_stall+0x112d/0x1340 [ 721.531782][ C1] ? copy_fpstate_to_sigframe+0x853/0x9a0 [ 721.537333][ C1] ? print_cpu_stall+0x5f0/0x5f0 [ 721.542108][ C1] ? __set_current_blocked+0x2a5/0x2f0 [ 721.547403][ C1] ? fpregs_set+0x6f0/0x6f0 [ 721.551754][ C1] ? irqentry_exit+0x30/0x40 [ 721.556171][ C1] rcu_sched_clock_irq+0xaec/0x12f0 [ 721.561298][ C1] ? rcu_boost_kthread_setaffinity+0x340/0x340 [ 721.567805][ C1] ? hrtimer_run_queues+0x15f/0x440 [ 721.572820][ C1] update_process_times+0x198/0x200 [ 721.577852][ C1] tick_sched_timer+0x188/0x240 [ 721.582903][ C1] ? tick_setup_sched_timer+0x480/0x480 [ 721.588356][ C1] __hrtimer_run_queues+0x41a/0xad0 [ 721.593478][ C1] ? hrtimer_interrupt+0xaa0/0xaa0 [ 721.598499][ C1] ? ktime_get_update_offsets_now+0x2ba/0x2d0 [ 721.604585][ C1] hrtimer_interrupt+0x40c/0xaa0 [ 721.609529][ C1] __sysvec_apic_timer_interrupt+0xfd/0x3c0 [ 721.615247][ C1] sysvec_apic_timer_interrupt+0x44/0xc0 [ 721.620936][ C1] asm_sysvec_apic_timer_interrupt+0x1b/0x20 [ 721.626862][ C1] RIP: 0033:0x7f921763a350 [ 721.631198][ C1] Code: 83 c0 16 83 e0 f7 74 12 50 48 8d 3d da 20 03 00 e8 05 11 fb 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 [ 721.651863][ C1] RSP: 002b:00007f92175d4c78 EFLAGS: 00000246 [ 721.658139][ C1] RAX: 0000000000000000 RBX: 00007f921769e308 RCX: 00007f9217614419 [ 721.666182][ C1] RDX: 00007f92175d4c80 RSI: 00007f92175d4db0 RDI: 0000000000000021 [ 721.674433][ C1] RBP: 00007f921769e300 R08: 00007f92175d56c0 R09: 00007f92175d56c0 [ 721.682352][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f921769e30c [ 721.690242][ C1] R13: 0000000000000000 R14: 00007ffc330a4b60 R15: 00007ffc330a4c48 [ 721.699545][ C1] [ 858.886314][ C0] BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=0 stuck for 236s! [ 858.895332][ C0] Showing busy workqueues and worker pools: [ 858.901308][ C0] workqueue events: flags=0x0 [ 858.905857][ C0] pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 [ 858.905904][ C0] pending: psi_avgs_work [ 858.905932][ C0] pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 [ 858.905966][ C0] pending: vmstat_shepherd [ 858.905991][ C0] workqueue events_unbound: flags=0x2 [ 858.935430][ C0] pwq 4: cpus=0-1 flags=0x4 nice=0 active=2/512 refcnt=4 [ 858.935476][ C0] pending: toggle_allocation_gate, flush_memcg_stats_dwork [ 858.935526][ C0] workqueue events_power_efficient: flags=0x80 [ 858.956166][ C0] pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=4/256 refcnt=5 [ 858.956214][ C0] pending: neigh_periodic_work, neigh_periodic_work, check_lifetime, gc_worker [ 858.973052][ C0] workqueue mm_percpu_wq: flags=0x8 [ 858.978052][ C0] pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 [ 858.978100][ C0] pending: vmstat_update [ 858.978131][ C0] workqueue writeback: flags=0x4a [ 858.994789][ C0] pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/256 refcnt=3 [ 858.994829][ C0] pending: wb_workfn [ 858.994856][ C0] workqueue kblockd: flags=0x18 [ 859.010877][ C0] pwq 3: cpus=1 node=0 flags=0x0 nice=-20 active=1/256 refcnt=2 [ 859.010925][ C0] pending: blk_mq_timeout_work [ 859.010964][ C0] workqueue dm_bufio_cache: flags=0x8 [ 859.029033][ C0] pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 [ 859.029088][ C0] pending: work_fn [ 859.029142][ C0] workqueue ipv6_addrconf: flags=0x40008 [ 859.046321][ C0] pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/1 refcnt=2 [ 859.046369][ C0] pending: addrconf_verify_work