Warning: Permanently added '10.128.1.70' (ED25519) to the list of known hosts. executing program executing program executing program [ 138.785442][ T30] audit: type=1400 audit(1748940818.544:64): avc: denied { execmem } for pid=282 comm="syz-executor124" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 238.822366][ C0] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 238.829510][ C0] (detected by 0, t=10002 jiffies, g=753, q=274) [ 238.835939][ C0] rcu: All QSes seen, last rcu_preempt kthread activity 10002 (4294961071-4294951069), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 238.849318][ C0] rcu: rcu_preempt kthread starved for 10002 jiffies! g753 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 238.860355][ C0] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. [ 238.870338][ C0] rcu: RCU grace-period kthread stack dump: [ 238.876243][ C0] task:rcu_preempt state:R running task stack:28752 pid: 14 ppid: 2 flags:0x00004000 [ 238.887059][ C0] Call Trace: [ 238.890355][ C0] [ 238.893297][ C0] __schedule+0xb6e/0x14c0 [ 238.897750][ C0] ? release_firmware_map_entry+0x190/0x190 [ 238.903658][ C0] ? _raw_spin_unlock_irqrestore+0x5b/0x80 [ 238.909480][ C0] ? __mod_timer+0x7ae/0xb30 [ 238.914090][ C0] schedule+0x11e/0x1e0 [ 238.918260][ C0] schedule_timeout+0x12c/0x2e0 [ 238.923136][ C0] ? console_conditional_schedule+0x30/0x30 [ 238.929040][ C0] ? update_process_times+0x200/0x200 [ 238.934428][ C0] ? prepare_to_swait_event+0x308/0x320 [ 238.939983][ C0] rcu_gp_fqs_loop+0x293/0xf60 [ 238.944783][ C0] ? debug_smp_processor_id+0x17/0x20 [ 238.950168][ C0] ? __note_gp_changes+0x4e2/0x9e0 [ 238.955295][ C0] ? rcu_gp_init+0xc00/0xc00 [ 238.959897][ C0] ? _raw_spin_unlock_irq+0x4e/0x70 [ 238.965110][ C0] ? rcu_gp_init+0x9a7/0xc00 [ 238.969719][ C0] rcu_gp_kthread+0x98/0x330 [ 238.974319][ C0] ? wake_nocb_gp+0x1d0/0x1d0 [ 238.979022][ C0] ? __kasan_check_read+0x11/0x20 [ 238.984065][ C0] ? __kthread_parkme+0xac/0x200 [ 238.989037][ C0] ? preempt_count_add+0x90/0x1b0 [ 238.994089][ C0] kthread+0x411/0x500 [ 238.998186][ C0] ? wake_nocb_gp+0x1d0/0x1d0 [ 239.002885][ C0] ? kthread_blkcg+0xd0/0xd0 [ 239.007495][ C0] ret_from_fork+0x1f/0x30 [ 239.011927][ C0] [ 239.014964][ C0] rcu: Stack dump where RCU GP kthread last ran: [ 239.021305][ C0] NMI backtrace for cpu 0 [ 239.025649][ C0] CPU: 0 PID: 291 Comm: syz-executor124 Not tainted 5.15.184-syzkaller-00129-g4032a894ccb2 #0 [ 239.035979][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 239.046047][ C0] Call Trace: [ 239.049346][ C0] [ 239.052211][ C0] __dump_stack+0x21/0x30 [ 239.056560][ C0] dump_stack_lvl+0xee/0x150 [ 239.061171][ C0] ? show_regs_print_info+0x20/0x20 [ 239.066392][ C0] dump_stack+0x15/0x20 [ 239.070713][ C0] nmi_cpu_backtrace+0x2b4/0x2c0 [ 239.075669][ C0] ? nmi_trigger_cpumask_backtrace+0x240/0x240 [ 239.081839][ C0] ? load_image+0x3a0/0x3a0 [ 239.086524][ C0] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 239.092620][ C0] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 239.098704][ C0] nmi_trigger_cpumask_backtrace+0x138/0x240 [ 239.104711][ C0] arch_trigger_cpumask_backtrace+0x10/0x20 [ 239.110629][ C0] rcu_check_gp_kthread_starvation+0x1e0/0x260 [ 239.117001][ C0] print_other_cpu_stall+0xded/0xfd0 [ 239.122318][ C0] ? print_cpu_stall+0x600/0x600 [ 239.127263][ C0] ? tick_nohz_handler+0x300/0x300 [ 239.132470][ C0] ? accumulate_nsecs_to_secs+0xb1/0x230 [ 239.138196][ C0] ? pvclock_gtod_notify+0x29b/0x390 [ 239.143491][ C0] ? memcpy+0x56/0x70 [ 239.147497][ C0] rcu_sched_clock_irq+0x8a3/0x12b0 [ 239.152712][ C0] ? rcu_boost_kthread_setaffinity+0x310/0x310 [ 239.158877][ C0] ? hrtimer_run_queues+0x166/0x430 [ 239.164094][ C0] update_process_times+0x198/0x200 [ 239.169304][ C0] tick_sched_timer+0x17c/0x240 [ 239.174170][ C0] ? tick_setup_sched_timer+0x450/0x450 [ 239.179727][ C0] __hrtimer_run_queues+0x3b5/0x9e0 [ 239.184940][ C0] ? hrtimer_interrupt+0x8c0/0x8c0 [ 239.190075][ C0] ? ktime_get_update_offsets_now+0x2fa/0x310 [ 239.196156][ C0] hrtimer_interrupt+0x3c7/0x8c0 [ 239.201116][ C0] __sysvec_apic_timer_interrupt+0xfa/0x3e0 [ 239.207026][ C0] sysvec_apic_timer_interrupt+0xa4/0xc0 [ 239.212676][ C0] [ 239.215609][ C0] [ 239.218543][ C0] asm_sysvec_apic_timer_interrupt+0x1b/0x20 [ 239.224557][ C0] RIP: 0010:__sanitizer_cov_trace_const_cmp8+0x36/0x80 [ 239.231423][ C0] Code: 50 c4 99 7e 65 8b 15 51 c4 99 7e 81 e2 00 01 ff 00 74 11 81 fa 00 01 00 00 75 57 83 b9 5c 0b 00 00 00 74 4e 8b 91 38 0b 00 00 <83> fa 03 75 43 48 8b 91 40 0b 00 00 44 8b 89 3c 0b 00 00 49 c1 e1 [ 239.251061][ C0] RSP: 0018:ffffc90000a77c78 EFLAGS: 00000246 [ 239.257248][ C0] RAX: ffffffff824bd4bb RBX: 00000000000000c0 RCX: ffff88812393e2c0 [ 239.265226][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 239.273206][ C0] RBP: ffffc90000a77c78 R08: dffffc0000000000 R09: fffff5200014efc0 [ 239.281188][ C0] R10: 0000000000000000 R11: 0000000000000018 R12: 00007ffffffff000 [ 239.289344][ C0] R13: 00007f9dc34dbca8 R14: ffffc90000a77d40 R15: 0000000000000000 [ 239.297419][ C0] ? _copy_from_user+0x8b/0xd0 [ 239.302206][ C0] ? __kasan_check_write+0x14/0x20 [ 239.307331][ C0] _copy_from_user+0x8b/0xd0 [ 239.311953][ C0] __ia32_sys_rt_sigreturn+0x1b0/0x6c0 [ 239.317428][ C0] ? load_gs_index+0xb0/0xb0 [ 239.322040][ C0] ? sysvec_apic_timer_interrupt+0x64/0xc0 [ 239.327864][ C0] ? fpregs_assert_state_consistent+0xb1/0xe0 [ 239.333952][ C0] x64_sys_call+0x4ab/0x9a0 [ 239.338467][ C0] do_syscall_64+0x4c/0xa0 [ 239.342910][ C0] ? clear_bhb_loop+0x50/0xa0 [ 239.347601][ C0] ? clear_bhb_loop+0x50/0xa0 [ 239.352288][ C0] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 239.358219][ C0] RIP: 0033:0x7f9dc34ee6c9 [ 239.362661][ C0] Code: 64 c7 00 16 00 00 00 b8 ff ff ff ff c3 0f 1f 40 00 90 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 c7 c0 0f 00 00 00 0f 05 <0f> 1f 80 00 00 00 00 48 81 ec 48 01 00 00 49 89 d0 64 48 8b 04 25 [ 239.382280][ C0] RSP: 002b:00007f9dc34dbbc0 EFLAGS: 00000202 ORIG_RAX: 000000000000000f [ 239.390707][ C0] RAX: ffffffffffffffda RBX: 00007f9dc35a6308 RCX: 00007f9dc34ee6c9 [ 239.398773][ C0] RDX: 00007f9dc34dbbc0 RSI: 00007f9dc34dbcf0 RDI: 0000000000000021 [ 239.406761][ C0] RBP: 00007f9dc35a6300 R08: 00007f9dc34dc6c0 R09: 00007f9dc34dc6c0 [ 239.414737][ C0] R10: 0000000000000000 R11: 0000000000000202 R12: 00007f9dc35a630c [ 239.422712][ C0] R13: 0000000000000000 R14: 00007ffe57219100 R15: 00007ffe572191e8 [ 239.430696][ C0] [ 285.712381][ C0] BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 145s! [ 285.721357][ C0] Showing busy workqueues and worker pools: [ 285.727277][ C0] workqueue events: flags=0x0 [ 285.731972][ C0] pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=2/256 refcnt=3 [ 285.732022][ C0] pending: psi_avgs_work, vmstat_shepherd [ 285.732077][ C0] workqueue events_unbound: flags=0x2 [ 285.751149][ C0] pwq 4: cpus=0-1 flags=0x4 nice=0 active=2/512 refcnt=4 [ 285.751192][ C0] pending: toggle_allocation_gate, flush_memcg_stats_dwork [ 285.751241][ C0] workqueue events_power_efficient: flags=0x80 [ 285.772186][ C0] pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=2/256 refcnt=3 [ 285.772242][ C0] pending: neigh_periodic_work, check_lifetime [ 285.772292][ C0] pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=2/256 refcnt=3 [ 285.772333][ C0] pending: neigh_periodic_work, gc_worker [ 285.800229][ C0] workqueue mm_percpu_wq: flags=0x8 [ 285.805449][ C0] pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 [ 285.805503][ C0] pending: vmstat_update [ 285.805536][ C0] pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 [ 285.805578][ C0] pending: vmstat_update [ 285.805603][ C0] workqueue writeback: flags=0x4a [ 285.835075][ C0] pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/256 refcnt=3 [ 285.835121][ C0] pending: wb_workfn [ 285.835288][ C0] workqueue dm_bufio_cache: flags=0x8 [ 285.852096][ C0] pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 [ 285.852146][ C0] pending: work_fn [ 285.852253][ C0] workqueue ipv6_addrconf: flags=0x40008 [ 285.869596][ C0] pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/1 refcnt=2 [ 285.869644][ C0] pending: addrconf_verify_work