Warning: Permanently added '10.128.1.164' (ED25519) to the list of known hosts. executing program executing program executing program [ 144.459156][ T28] audit: type=1400 audit(1746669017.367:64): avc: denied { execmem } for pid=283 comm="syz-executor142" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 249.798316][ C0] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 249.805405][ C0] (detected by 0, t=10002 jiffies, g=465, q=8 ncpus=2) [ 249.812357][ C0] rcu: All QSes seen, last rcu_preempt kthread activity 10002 (4294962199-4294952197), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 249.825730][ C0] rcu: rcu_preempt kthread starved for 10002 jiffies! g465 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 249.836762][ C0] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. [ 249.846734][ C0] rcu: RCU grace-period kthread stack dump: [ 249.852643][ C0] task:rcu_preempt state:R running task stack:28352 pid:14 ppid:2 flags:0x00004000 [ 249.863451][ C0] Call Trace: [ 249.866737][ C0] [ 249.869692][ C0] __schedule+0xb87/0x14e0 [ 249.874150][ C0] ? release_firmware_map_entry+0x194/0x194 [ 249.880068][ C0] ? __mod_timer+0x7ae/0xb30 [ 249.884674][ C0] schedule+0xbd/0x170 [ 249.888757][ C0] schedule_timeout+0x12c/0x2e0 [ 249.893619][ C0] ? __cfi_schedule_timeout+0x10/0x10 [ 249.899003][ C0] ? _raw_spin_lock_irqsave+0xb0/0x110 [ 249.904481][ C0] ? __cfi_process_timeout+0x10/0x10 [ 249.909781][ C0] ? prepare_to_swait_event+0x308/0x320 [ 249.915347][ C0] rcu_gp_fqs_loop+0x2d8/0x10a0 [ 249.920227][ C0] ? rcu_gp_init+0xf10/0xf10 [ 249.925162][ C0] rcu_gp_kthread+0x95/0x370 [ 249.929778][ C0] ? __cfi_rcu_gp_kthread+0x10/0x10 [ 249.935000][ C0] ? __kasan_check_read+0x11/0x20 [ 249.940050][ C0] ? __kthread_parkme+0x142/0x180 [ 249.945097][ C0] kthread+0x281/0x320 [ 249.949177][ C0] ? __cfi_rcu_gp_kthread+0x10/0x10 [ 249.954402][ C0] ? __cfi_kthread+0x10/0x10 [ 249.959005][ C0] ret_from_fork+0x1f/0x30 [ 249.963445][ C0] [ 249.966471][ C0] rcu: Stack dump where RCU GP kthread last ran: [ 249.972816][ C0] CPU: 0 PID: 295 Comm: syz-executor142 Not tainted 6.1.134-syzkaller-00012-g646380b087a5 #0 [ 249.983064][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 [ 249.993134][ C0] RIP: 0010:_raw_spin_unlock_irq+0x48/0x70 [ 249.998979][ C0] Code: 74 12 48 89 fb 48 c7 c7 40 e4 ed 86 e8 21 a2 c4 fc 48 89 df 48 83 3d 46 4d fe 01 00 74 26 e8 93 0c 00 00 90 fb bf 01 00 00 00 73 f3 5b fc 65 8b 05 b4 d6 12 7b 85 c0 74 03 5b 5d c3 e8 64 e3 [ 250.018610][ C0] RSP: 0018:ffffc90000ef7b90 EFLAGS: 00000246 [ 250.024772][ C0] RAX: 0000000000000001 RBX: 0000000000000021 RCX: dffffc0000000000 [ 250.032759][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 [ 250.040755][ C0] RBP: ffffc90000ef7b98 R08: dffffc0000000000 R09: fffff520001defc0 [ 250.048875][ C0] R10: fffff520001defc0 R11: 1ffff920001defbc R12: dffffc0000000000 [ 250.056875][ C0] R13: 1ffff11023e5c944 R14: 000000001c000004 R15: ffff88811f2e4a20 [ 250.064876][ C0] FS: 00007f6135abd6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 250.073828][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 250.080425][ C0] CR2: 00007f6135abce40 CR3: 0000000125951000 CR4: 00000000003506b0 [ 250.088412][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 250.096393][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 250.104375][ C0] Call Trace: [ 250.107665][ C0] [ 250.110622][ C0] get_signal+0x12a4/0x1520 [ 250.115156][ C0] arch_do_signal_or_restart+0xb0/0x1030 [ 250.120819][ C0] ? __ia32_sys_rt_sigreturn+0x5e7/0x6c0 [ 250.126471][ C0] ? __cfi___x64_sys_rt_sigreturn+0x10/0x10 [ 250.132375][ C0] ? __cfi_arch_do_signal_or_restart+0x10/0x10 [ 250.138578][ C0] exit_to_user_mode_loop+0x7a/0xb0 [ 250.143790][ C0] exit_to_user_mode_prepare+0x5a/0xa0 [ 250.149259][ C0] syscall_exit_to_user_mode+0x1a/0x30 [ 250.154732][ C0] do_syscall_64+0x58/0xa0 [ 250.159167][ C0] ? clear_bhb_loop+0x15/0x70 [ 250.163853][ C0] ? clear_bhb_loop+0x15/0x70 [ 250.168541][ C0] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 250.174453][ C0] RIP: 0033:0x7f6135afc457 [ 250.178893][ 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 [ 250.198507][ C0] RSP: 002b:00007f6135abd218 EFLAGS: 00000246 [ 250.204592][ C0] RAX: 00000000000000ca RBX: 00007f6135b86308 RCX: 00007f6135afc459 [ 250.212573][ C0] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f6135b86308 [ 250.220554][ C0] RBP: 00007f6135b86300 R08: 0000000000000000 R09: 0000000000000000 [ 250.228708][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000000140 [ 250.236687][ C0] R13: 000020000006b000 R14: 0000200000000100 R15: 0000200000000680 [ 250.244681][ C0] [ 285.408315][ C0] BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 140s! [ 285.417333][ C0] Showing busy workqueues and worker pools: [ 285.423260][ C0] workqueue events: flags=0x0 [ 285.427947][ C0] pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=2/256 refcnt=3 [ 285.427995][ C0] pending: psi_avgs_work, vmstat_shepherd [ 285.428044][ C0] workqueue events_unbound: flags=0x2 [ 285.447129][ C0] pwq 4: cpus=0-1 flags=0x4 nice=0 active=2/512 refcnt=4 [ 285.447172][ C0] pending: toggle_allocation_gate, flush_memcg_stats_dwork [ 285.447217][ C0] workqueue events_power_efficient: flags=0x80 [ 285.468160][ C0] pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=6/256 refcnt=7 [ 285.468208][ C0] pending: neigh_managed_work, neigh_managed_work, neigh_periodic_work, neigh_periodic_work, gc_worker, check_lifetime [ 285.488729][ C0] workqueue mm_percpu_wq: flags=0x8 [ 285.493945][ C0] pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 [ 285.493992][ C0] pending: vmstat_update [ 285.494023][ C0] pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 [ 285.494062][ C0] pending: vmstat_update [ 285.494097][ C0] workqueue writeback: flags=0x4a [ 285.523576][ C0] pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/256 refcnt=3 [ 285.523620][ C0] pending: wb_workfn [ 285.523817][ C0] workqueue dm_bufio_cache: flags=0x8 [ 285.540658][ C0] pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 [ 285.540706][ C0] pending: work_fn [ 285.540813][ C0] workqueue ipv6_addrconf: flags=0x40008 [ 285.558149][ C0] pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/1 refcnt=2 [ 285.558198][ C0] pending: addrconf_verify_work