Warning: Permanently added '10.128.0.172' (ED25519) to the list of known hosts. executing program [ 486.504341][ T30] audit: type=1400 audit(1716258569.169:66): avc: denied { execmem } for pid=751 comm="syz-executor135" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 586.516843][ C1] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 586.523636][ C1] (detected by 1, t=10002 jiffies, g=4517, q=191) [ 586.529946][ C1] rcu: All QSes seen, last rcu_preempt kthread activity 10002 (4294995872-4294985870), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 586.543147][ C1] rcu: rcu_preempt kthread starved for 10002 jiffies! g4517 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 586.554074][ C1] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. [ 586.563883][ C1] rcu: RCU grace-period kthread stack dump: [ 586.569622][ C1] task:rcu_preempt state:R running task stack:28328 pid: 14 ppid: 2 flags:0x00004000 [ 586.580209][ C1] Call Trace: [ 586.583328][ C1] [ 586.586105][ C1] __schedule+0xccc/0x1590 [ 586.590362][ C1] ? __sched_text_start+0x8/0x8 [ 586.595047][ C1] preempt_schedule_irq+0xc7/0x140 [ 586.599992][ C1] ? __cond_resched+0x20/0x20 [ 586.604502][ C1] ? __schedule+0xcd4/0x1590 [ 586.608932][ C1] irqentry_exit_cond_resched+0x2a/0x30 [ 586.614314][ C1] irqentry_exit+0x30/0x40 [ 586.618566][ C1] sysvec_apic_timer_interrupt+0x55/0xc0 [ 586.624040][ C1] asm_sysvec_apic_timer_interrupt+0x1b/0x20 [ 586.629856][ C1] RIP: 0010:schedule_timeout+0x18f/0x370 [ 586.635314][ C1] Code: 03 42 0f b6 04 20 84 c0 0f 85 e2 00 00 00 89 5c 24 60 4c 89 f7 4c 89 fe ba 04 00 00 00 e8 19 a4 97 fc e8 54 c7 fe ff 4c 89 f7 cc bf 97 fc 48 c7 c0 80 b9 80 86 48 c1 e8 03 42 80 3c 20 00 74 [ 586.654754][ C1] RSP: 0018:ffffc900000e7bc0 EFLAGS: 00000246 [ 586.660652][ C1] RAX: 0000000000208040 RBX: 0000000000000001 RCX: ffffffff84c73476 [ 586.668468][ C1] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffc900000e7c00 [ 586.676276][ C1] RBP: ffffc900000e7cb0 R08: dffffc0000000000 R09: ffffed102004d279 [ 586.684092][ C1] R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 [ 586.691903][ C1] R13: 1ffff9200001cf7c R14: ffffc900000e7c00 R15: 000000010000488f [ 586.699718][ C1] ? schedule+0x136/0x1e0 [ 586.703882][ C1] ? _raw_spin_unlock_irq+0x4e/0x70 [ 586.708916][ C1] ? console_conditional_schedule+0x30/0x30 [ 586.714652][ C1] ? update_process_times+0x200/0x200 [ 586.719853][ C1] ? prepare_to_swait_event+0x308/0x320 [ 586.725232][ C1] rcu_gp_fqs_loop+0x2af/0xf80 [ 586.729835][ C1] ? debug_smp_processor_id+0x17/0x20 [ 586.735036][ C1] ? __note_gp_changes+0x4ab/0x920 [ 586.739983][ C1] ? rcu_gp_init+0xc30/0xc30 [ 586.744409][ C1] ? _raw_spin_unlock_irq+0x4e/0x70 [ 586.749443][ C1] ? rcu_gp_init+0x9cf/0xc30 [ 586.753874][ C1] rcu_gp_kthread+0xa4/0x350 [ 586.758297][ C1] ? _raw_spin_lock+0x1b0/0x1b0 [ 586.762987][ C1] ? rcu_barrier_callback+0x50/0x50 [ 586.768022][ C1] ? __kasan_check_read+0x11/0x20 [ 586.772877][ C1] ? __kthread_parkme+0xb2/0x200 [ 586.777649][ C1] kthread+0x421/0x510 [ 586.781559][ C1] ? rcu_barrier_callback+0x50/0x50 [ 586.786589][ C1] ? kthread_blkcg+0xd0/0xd0 [ 586.791016][ C1] ret_from_fork+0x1f/0x30 [ 586.795275][ C1] [ 586.798145][ C1] rcu: Stack dump where RCU GP kthread last ran: [ 586.804303][ C1] NMI backtrace for cpu 1 [ 586.808471][ C1] CPU: 1 PID: 759 Comm: syz-executor135 Not tainted 5.15.149-syzkaller-00490-g5d96939590c0 #0 [ 586.818530][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 586.828548][ C1] Call Trace: [ 586.831672][ C1] [ 586.834367][ C1] dump_stack_lvl+0x151/0x1b7 [ 586.838876][ C1] ? io_uring_drop_tctx_refs+0x190/0x190 [ 586.844343][ C1] dump_stack+0x15/0x17 [ 586.848335][ C1] nmi_cpu_backtrace+0x2f7/0x300 [ 586.853113][ C1] ? nmi_trigger_cpumask_backtrace+0x270/0x270 [ 586.859098][ C1] ? panic+0x751/0x751 [ 586.863003][ C1] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 586.868902][ C1] nmi_trigger_cpumask_backtrace+0x15d/0x270 [ 586.874722][ C1] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 586.880626][ C1] arch_trigger_cpumask_backtrace+0x10/0x20 [ 586.886354][ C1] rcu_check_gp_kthread_starvation+0x1e3/0x250 [ 586.892340][ C1] print_other_cpu_stall+0x112d/0x1340 [ 586.897632][ C1] ? print_cpu_stall+0x5f0/0x5f0 [ 586.902428][ C1] rcu_sched_clock_irq+0xaec/0x12f0 [ 586.907440][ C1] ? rcu_boost_kthread_setaffinity+0x340/0x340 [ 586.913429][ C1] ? hrtimer_run_queues+0x15f/0x440 [ 586.918463][ C1] update_process_times+0x198/0x200 [ 586.923507][ C1] tick_sched_timer+0x188/0x240 [ 586.928184][ C1] ? tick_setup_sched_timer+0x480/0x480 [ 586.933565][ C1] __hrtimer_run_queues+0x41a/0xad0 [ 586.938603][ C1] ? hrtimer_interrupt+0xaa0/0xaa0 [ 586.943550][ C1] ? clockevents_program_event+0x22f/0x300 [ 586.949191][ C1] ? ktime_get_update_offsets_now+0x2ba/0x2d0 [ 586.955089][ C1] hrtimer_interrupt+0x40c/0xaa0 [ 586.959872][ C1] __sysvec_apic_timer_interrupt+0xfd/0x3c0 [ 586.965710][ C1] sysvec_apic_timer_interrupt+0x95/0xc0 [ 586.971208][ C1] [ 586.973951][ C1] [ 586.976730][ C1] asm_sysvec_apic_timer_interrupt+0x1b/0x20 [ 586.982545][ C1] RIP: 0010:_raw_spin_unlock_irq+0x49/0x70 [ 586.988186][ C1] Code: 08 00 74 0c 48 c7 c7 d8 54 8d 86 e8 41 6c e9 fc 48 83 3d 21 78 c4 01 00 74 2a 48 89 df e8 93 09 8c fc 66 90 fb bf 01 00 00 00 12 4d 83 fc 65 8b 05 b3 90 39 7b 85 c0 74 03 5b 5d c3 e8 b3 a4 [ 587.007626][ C1] RSP: 0018:ffffc90000997bb8 EFLAGS: 00000246 [ 587.013527][ C1] RAX: 0000000000000001 RBX: ffff8881158f0000 RCX: dffffc0000000000 [ 587.021338][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 [ 587.029147][ C1] RBP: ffffc90000997bc0 R08: ffffffff81456dfa R09: fffff52000132fc0 [ 587.036961][ C1] R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881158f0000 [ 587.044858][ C1] R13: ffff8881158f0420 R14: 0000000000000021 R15: dffffc0000000000 [ 587.052674][ C1] ? get_signal+0x151a/0x1630 [ 587.057185][ C1] ? _raw_spin_unlock_irq+0x41/0x70 [ 587.062218][ C1] get_signal+0x1562/0x1630 [ 587.066558][ C1] arch_do_signal_or_restart+0xbd/0x1680 [ 587.072029][ C1] ? __do_compat_sys_x32_rt_sigreturn+0x1e0/0x1e0 [ 587.078273][ C1] ? _raw_spin_lock_irq+0xa5/0x1b0 [ 587.083222][ C1] ? __kasan_check_write+0x14/0x20 [ 587.088166][ C1] ? _copy_from_user+0x96/0xd0 [ 587.092768][ C1] ? restore_altstack+0x274/0x400 [ 587.097627][ C1] ? get_sigframe_size+0x10/0x10 [ 587.102415][ C1] ? __ia32_sys_sigaltstack+0x70/0x70 [ 587.107620][ C1] ? __do_sys_rt_sigreturn+0x160/0x1e0 [ 587.112909][ C1] exit_to_user_mode_loop+0xa0/0xe0 [ 587.117939][ C1] exit_to_user_mode_prepare+0x5a/0xa0 [ 587.123235][ C1] syscall_exit_to_user_mode+0x26/0x160 [ 587.128614][ C1] do_syscall_64+0x49/0xb0 [ 587.132866][ C1] ? sysvec_apic_timer_interrupt+0x55/0xc0 [ 587.138511][ C1] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 587.144235][ C1] RIP: 0033:0x7f48d394e417 [ 587.148492][ 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 [ 587.167929][ C1] RSP: 002b:00007f48d390f238 EFLAGS: 00000246 [ 587.173832][ C1] RAX: 00000000000000ca RBX: 00007f48d39d8308 RCX: 00007f48d394e419 [ 587.181642][ C1] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f48d39d8308 [ 587.189457][ C1] RBP: 00007f48d39d8300 R08: 00007f48d390f6c0 R09: 00007f48d390f6c0 [ 587.197265][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f48d39d830c [ 587.205076][ C1] R13: 0000000000000000 R14: 00007ffd1715cc80 R15: 00007ffd1715cd68 [ 587.212892][ C1] [ 587.215768][ C1] sched: RT throttling activated [ 715.476800][ C0] BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=0 stuck for 228s! [ 715.485524][ C0] BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=-20 stuck for 222s! [ 715.494390][ C0] Showing busy workqueues and worker pools: [ 715.500126][ C0] workqueue events: flags=0x0 [ 715.504618][ C0] pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=2/256 refcnt=3 [ 715.504660][ C0] pending: vmstat_shepherd, psi_avgs_work [ 715.504761][ C0] workqueue events_unbound: flags=0x2 [ 715.523296][ C0] pwq 4: cpus=0-1 flags=0x4 nice=0 active=2/512 refcnt=4 [ 715.523332][ C0] pending: flush_memcg_stats_dwork, toggle_allocation_gate [ 715.523402][ C0] workqueue events_power_efficient: flags=0x80 [ 715.543780][ C0] pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=2/256 refcnt=3 [ 715.543826][ C0] pending: neigh_periodic_work, check_lifetime [ 715.543959][ C0] pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=2/256 refcnt=3 [ 715.543994][ C0] pending: gc_worker, neigh_periodic_work [ 715.544051][ C0] workqueue mm_percpu_wq: flags=0x8 [ 715.576300][ C0] pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 [ 715.576346][ C0] pending: vmstat_update [ 715.576373][ C0] workqueue writeback: flags=0x4a [ 715.593226][ C0] pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/256 refcnt=3 [ 715.593272][ C0] pending: wb_workfn [ 715.593371][ C0] workqueue kblockd: flags=0x18 [ 715.609146][ C0] pwq 1: cpus=0 node=0 flags=0x0 nice=-20 active=1/256 refcnt=2 [ 715.609192][ C0] pending: blk_mq_timeout_work [ 715.609340][ C0] workqueue dm_bufio_cache: flags=0x8 [ 715.627109][ C0] pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 [ 715.627151][ C0] pending: work_fn [ 715.627222][ C0] workqueue ipv6_addrconf: flags=0x40008 [ 715.643937][ C0] pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/1 refcnt=2 [ 715.643978][ C0] pending: addrconf_verify_work