Warning: Permanently added '10.128.1.99' (ED25519) to the list of known hosts. executing program executing program executing program executing program [ 163.475946][ T30] audit: type=1400 audit(1713626497.580:66): avc: denied { execmem } for pid=428 comm="syz-executor206" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 263.492308][ C0] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 263.499238][ C0] (detected by 0, t=10002 jiffies, g=1757, q=193) [ 263.505559][ C0] rcu: All QSes seen, last rcu_preempt kthread activity 10003 (4294963565-4294953562), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 263.518740][ C0] rcu: rcu_preempt kthread starved for 10004 jiffies! g1757 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 263.530003][ C0] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. [ 263.539806][ C0] rcu: RCU grace-period kthread stack dump: [ 263.545546][ C0] task:rcu_preempt state:R running task stack:28328 pid: 14 ppid: 2 flags:0x00004000 [ 263.556222][ C0] Call Trace: [ 263.559378][ C0] [ 263.562121][ C0] __schedule+0xccc/0x1590 [ 263.566370][ C0] ? __sched_text_start+0x8/0x8 [ 263.571230][ C0] ? __kasan_check_write+0x14/0x20 [ 263.576257][ C0] schedule+0x11f/0x1e0 [ 263.580259][ C0] schedule_timeout+0x18c/0x370 [ 263.584941][ C0] ? __update_idle_core+0x2a0/0x2a0 [ 263.589987][ C0] ? console_conditional_schedule+0x30/0x30 [ 263.595698][ C0] ? update_process_times+0x200/0x200 [ 263.600917][ C0] ? prepare_to_swait_event+0x308/0x320 [ 263.606294][ C0] rcu_gp_fqs_loop+0x2af/0xf80 [ 263.610909][ C0] ? debug_smp_processor_id+0x17/0x20 [ 263.616443][ C0] ? __note_gp_changes+0x4ab/0x920 [ 263.621395][ C0] ? rcu_gp_init+0xc30/0xc30 [ 263.625817][ C0] ? _raw_spin_unlock_irq+0x4e/0x70 [ 263.630855][ C0] ? rcu_gp_init+0x9cf/0xc30 [ 263.635280][ C0] rcu_gp_kthread+0xa4/0x350 [ 263.639711][ C0] ? _raw_spin_lock+0x1b0/0x1b0 [ 263.644402][ C0] ? rcu_barrier_callback+0x50/0x50 [ 263.649428][ C0] ? __kasan_check_read+0x11/0x20 [ 263.654287][ C0] ? __kthread_parkme+0xb2/0x200 [ 263.659062][ C0] kthread+0x421/0x510 [ 263.662978][ C0] ? rcu_barrier_callback+0x50/0x50 [ 263.668013][ C0] ? kthread_blkcg+0xd0/0xd0 [ 263.672426][ C0] ret_from_fork+0x1f/0x30 [ 263.676688][ C0] [ 263.679553][ C0] rcu: Stack dump where RCU GP kthread last ran: [ 263.685820][ C0] NMI backtrace for cpu 0 [ 263.689969][ C0] CPU: 0 PID: 441 Comm: syz-executor206 Not tainted 5.15.148-syzkaller-00013-gad06eaf051cd #0 [ 263.700039][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 263.709924][ C0] Call Trace: [ 263.713052][ C0] [ 263.715741][ C0] dump_stack_lvl+0x151/0x1b7 [ 263.720253][ C0] ? io_uring_drop_tctx_refs+0x190/0x190 [ 263.725986][ C0] dump_stack+0x15/0x17 [ 263.730444][ C0] nmi_cpu_backtrace+0x2f7/0x300 [ 263.736034][ C0] ? nmi_trigger_cpumask_backtrace+0x270/0x270 [ 263.743086][ C0] ? panic+0x751/0x751 [ 263.747072][ C0] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 263.753087][ C0] nmi_trigger_cpumask_backtrace+0x15d/0x270 [ 263.758896][ C0] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 263.764799][ C0] arch_trigger_cpumask_backtrace+0x10/0x20 [ 263.770521][ C0] rcu_check_gp_kthread_starvation+0x1e3/0x250 [ 263.776517][ C0] print_other_cpu_stall+0x112d/0x1340 [ 263.781812][ C0] ? try_invoke_on_locked_down_task+0x2a0/0x2a0 [ 263.788014][ C0] ? print_cpu_stall+0x5f0/0x5f0 [ 263.792790][ C0] ? __kasan_check_write+0x14/0x20 [ 263.797770][ C0] rcu_sched_clock_irq+0xaec/0x12f0 [ 263.802777][ C0] ? rcu_boost_kthread_setaffinity+0x340/0x340 [ 263.808761][ C0] ? hrtimer_run_queues+0x15f/0x440 [ 263.814009][ C0] update_process_times+0x198/0x200 [ 263.819038][ C0] tick_sched_timer+0x188/0x240 [ 263.823720][ C0] ? tick_setup_sched_timer+0x480/0x480 [ 263.829336][ C0] __hrtimer_run_queues+0x41a/0xad0 [ 263.835359][ C0] ? hrtimer_interrupt+0xaa0/0xaa0 [ 263.840982][ C0] ? clockevents_program_event+0x22f/0x300 [ 263.847519][ C0] ? ktime_get_update_offsets_now+0x2ba/0x2d0 [ 263.853856][ C0] hrtimer_interrupt+0x40c/0xaa0 [ 263.858632][ C0] __sysvec_apic_timer_interrupt+0xfd/0x3c0 [ 263.864352][ C0] sysvec_apic_timer_interrupt+0x95/0xc0 [ 263.870352][ C0] [ 263.873121][ C0] [ 263.875899][ C0] asm_sysvec_apic_timer_interrupt+0x1b/0x20 [ 263.881811][ C0] RIP: 0010:_raw_spin_unlock_irq+0x49/0x70 [ 263.887447][ C0] Code: 08 00 74 0c 48 c7 c7 d8 54 8d 86 e8 01 87 e9 fc 48 83 3d 91 98 c4 01 00 74 2a 48 89 df e8 13 28 8c fc 66 90 fb bf 01 00 00 00 d2 6b 83 fc 65 8b 05 23 b1 39 7b 85 c0 74 03 5b 5d c3 e8 23 c5 [ 263.906966][ C0] RSP: 0018:ffffc90000a77bb8 EFLAGS: 00000246 [ 263.912872][ C0] RAX: 0000000000000001 RBX: ffff888116523d40 RCX: dffffc0000000000 [ 263.920679][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 [ 263.928618][ C0] RBP: ffffc90000a77bc0 R08: ffffffff81456d3a R09: fffff5200014efc0 [ 263.936515][ C0] R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888116523d40 [ 263.944321][ C0] R13: ffff888116524160 R14: 0000000000000021 R15: dffffc0000000000 [ 263.952149][ C0] ? get_signal+0x151a/0x1630 [ 263.956655][ C0] ? _raw_spin_unlock_irq+0x41/0x70 [ 263.961682][ C0] get_signal+0x1562/0x1630 [ 263.966026][ C0] arch_do_signal_or_restart+0xbd/0x1680 [ 263.971490][ C0] ? __do_compat_sys_x32_rt_sigreturn+0x1e0/0x1e0 [ 263.977741][ C0] ? _raw_spin_lock_irq+0xa5/0x1b0 [ 263.982689][ C0] ? __kasan_check_write+0x14/0x20 [ 263.987632][ C0] ? _copy_from_user+0x96/0xd0 [ 263.992233][ C0] ? restore_altstack+0x274/0x400 [ 263.997281][ C0] ? get_sigframe_size+0x10/0x10 [ 264.002053][ C0] ? __ia32_sys_sigaltstack+0x70/0x70 [ 264.007265][ C0] ? __do_sys_rt_sigreturn+0x160/0x1e0 [ 264.012642][ C0] exit_to_user_mode_loop+0xa0/0xe0 [ 264.017675][ C0] exit_to_user_mode_prepare+0x5a/0xa0 [ 264.022973][ C0] syscall_exit_to_user_mode+0x26/0x160 [ 264.028352][ C0] do_syscall_64+0x49/0xb0 [ 264.032601][ C0] ? sysvec_apic_timer_interrupt+0x55/0xc0 [ 264.038243][ C0] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 264.043974][ C0] RIP: 0033:0x7f08b8e2c417 [ 264.048240][ 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 [ 264.067668][ C0] RSP: 002b:00007f08b8ded238 EFLAGS: 00000246 [ 264.073567][ C0] RAX: 00000000000000ca RBX: 00007f08b8eb6308 RCX: 00007f08b8e2c419 [ 264.081380][ C0] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f08b8eb6308 [ 264.089191][ C0] RBP: 00007f08b8eb6300 R08: 00007f08b8ded6c0 R09: 00007f08b8ded6c0 [ 264.097015][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f08b8eb630c [ 264.104822][ C0] R13: 0000000000000000 R14: 00007ffdab05c170 R15: 00007ffdab05c258 [ 264.112630][ C0] [ 428.812232][ C0] BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=0 stuck for 265s! [ 428.821064][ C0] BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=-20 stuck for 258s! [ 428.829947][ C0] BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 264s! [ 428.838731][ C0] BUG: workqueue lockup - pool cpus=0-1 flags=0x4 nice=0 stuck for 265s! [ 428.847074][ C0] Showing busy workqueues and worker pools: [ 428.852796][ C0] workqueue events: flags=0x0 [ 428.857292][ C0] pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=2/256 refcnt=3 [ 428.857342][ C0] pending: psi_avgs_work, vmstat_shepherd [ 428.857399][ C0] workqueue events_unbound: flags=0x2 [ 428.875872][ C0] pwq 4: cpus=0-1 flags=0x4 nice=0 active=2/512 refcnt=4 [ 428.875922][ C0] pending: toggle_allocation_gate, flush_memcg_stats_dwork [ 428.876050][ C0] workqueue events_power_efficient: flags=0x80 [ 428.897242][ C0] pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 [ 428.897293][ C0] pending: check_lifetime [ 428.897319][ C0] pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=3/256 refcnt=4 [ 428.897360][ C0] pending: neigh_periodic_work, neigh_periodic_work, gc_worker [ 428.897418][ C0] workqueue mm_percpu_wq: flags=0x8 [ 428.929868][ C0] pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 [ 428.929922][ C0] pending: vmstat_update [ 428.929953][ C0] pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 [ 428.929993][ C0] pending: vmstat_update [ 428.930020][ C0] workqueue writeback: flags=0x4a [ 428.958721][ C0] pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/256 refcnt=3 [ 428.958770][ C0] pending: wb_workfn [ 428.958802][ C0] workqueue kblockd: flags=0x18 [ 428.974786][ C0] pwq 1: cpus=0 node=0 flags=0x0 nice=-20 active=1/256 refcnt=2 [ 428.974834][ C0] pending: blk_mq_timeout_work [ 428.974976][ C0] workqueue dm_bufio_cache: flags=0x8 [ 428.992752][ C0] pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 [ 428.992798][ C0] pending: work_fn [ 428.992877][ C0] workqueue ipv6_addrconf: flags=0x40008 [ 429.009687][ C0] pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/1 refcnt=2 [ 429.009738][ C0] pending: addrconf_verify_work