[ 13.436724][ T28] audit: type=1400 audit(1713804833.612:64): avc: denied { rlimitinh } for pid=226 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 13.439626][ T28] audit: type=1400 audit(1713804833.612:65): avc: denied { siginh } for pid=226 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 563.721242][ T28] audit: type=1400 audit(1713805383.912:66): avc: denied { remove_name } for pid=83 comm="syslogd" name="messages" dev="tmpfs" ino=2 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 563.743366][ T28] audit: type=1400 audit(1713805383.912:67): avc: denied { rename } for pid=83 comm="syslogd" name="messages" dev="tmpfs" ino=2 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=file permissive=1 Warning: Permanently added '10.128.1.165' (ED25519) to the list of known hosts. executing program executing program executing program [ 572.068619][ T28] audit: type=1400 audit(1713805392.252:68): avc: denied { execmem } for pid=839 comm="syz-executor331" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 672.099024][ C1] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 672.105818][ C1] (detected by 1, t=10002 jiffies, g=4753, q=167 ncpus=2) [ 672.112830][ C1] rcu: All QSes seen, last rcu_preempt kthread activity 10002 (4295004428-4294994426), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 672.126549][ C1] rcu: rcu_preempt kthread starved for 10002 jiffies! g4753 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 672.137476][ C1] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. [ 672.147298][ C1] rcu: RCU grace-period kthread stack dump: [ 672.153116][ C1] task:rcu_preempt state:R running task stack:28040 pid:14 ppid:2 flags:0x00004000 [ 672.163699][ C1] Call Trace: [ 672.166816][ C1] [ 672.169682][ C1] __schedule+0xca7/0x1550 [ 672.173935][ C1] ? update_load_avg+0x513/0x1530 [ 672.178793][ C1] ? __sched_text_start+0x8/0x8 [ 672.183478][ C1] ? __kasan_check_write+0x14/0x20 [ 672.188430][ C1] schedule+0xc3/0x180 [ 672.192340][ C1] schedule_timeout+0x18c/0x380 [ 672.197018][ C1] ? _raw_spin_unlock_irq+0x4d/0x70 [ 672.202054][ C1] ? console_conditional_schedule+0x10/0x10 [ 672.207781][ C1] ? update_process_times+0x1b0/0x1b0 [ 672.212990][ C1] ? prepare_to_swait_event+0x308/0x320 [ 672.218377][ C1] rcu_gp_fqs_loop+0x2ed/0x1060 [ 672.223058][ C1] ? _raw_spin_unlock_irq+0x4d/0x70 [ 672.228095][ C1] ? rcu_gp_init+0xc7f/0xf80 [ 672.232616][ C1] ? rcu_gp_init+0xf80/0xf80 [ 672.237034][ C1] ? _raw_spin_unlock_irqrestore+0x5b/0x80 [ 672.242681][ C1] ? finish_swait+0x17d/0x1b0 [ 672.247191][ C1] rcu_gp_kthread+0xa3/0x390 [ 672.251613][ C1] ? queued_spin_lock_slowpath+0x50/0x50 [ 672.257078][ C1] ? set_cpus_allowed_ptr+0xa4/0xe0 [ 672.262127][ C1] ? __kasan_check_read+0x11/0x20 [ 672.266973][ C1] ? __kthread_parkme+0x12d/0x180 [ 672.271838][ C1] kthread+0x26d/0x300 [ 672.275826][ C1] ? queued_spin_lock_slowpath+0x50/0x50 [ 672.281294][ C1] ? kthread_blkcg+0xd0/0xd0 [ 672.285719][ C1] ret_from_fork+0x1f/0x30 [ 672.289981][ C1] [ 672.292838][ C1] rcu: Stack dump where RCU GP kthread last ran: [ 672.299016][ C1] CPU: 1 PID: 851 Comm: syz-executor331 Not tainted 6.1.75-syzkaller-00037-gdcb09569bbff #0 [ 672.308895][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 672.318790][ C1] RIP: 0010:_raw_spin_unlock_irq+0x48/0x70 [ 672.324432][ C1] Code: 3c 08 00 74 0c 48 c7 c7 e0 ef cd 86 e8 f1 e5 bc fc 48 83 3d d9 96 ce 01 00 74 29 48 89 df e8 f3 0e 00 00 90 fb bf 01 00 00 00 c3 fe 4f fc 65 8b 05 a4 14 03 7b 85 c0 74 03 5b 5d c3 e8 c4 26 [ 672.343875][ C1] RSP: 0018:ffffc90002457b48 EFLAGS: 00000246 [ 672.349774][ C1] RAX: 0000000000000001 RBX: ffff88811369abc0 RCX: dffffc0000000000 [ 672.357594][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 [ 672.365486][ C1] RBP: ffffc90002457b50 R08: ffffffff81486a6f R09: fffff5200048afc0 [ 672.373295][ C1] R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88811369afe0 [ 672.381110][ C1] R13: 1ffff110226d35fc R14: 0000000000000021 R15: dffffc0000000000 [ 672.389528][ C1] FS: 00007f5abfaf36c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 672.398291][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 672.404715][ C1] CR2: 00007f5abfaf2e40 CR3: 000000010fea0000 CR4: 00000000003506a0 [ 672.412705][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 672.420942][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 672.428755][ C1] Call Trace: [ 672.431888][ C1] [ 672.434597][ C1] ? show_regs+0x58/0x60 [ 672.438650][ C1] ? dump_cpu_task+0x3c/0x70 [ 672.443079][ C1] ? rcu_check_gp_kthread_starvation+0x1d1/0x240 [ 672.449240][ C1] ? _find_next_bit+0x126/0x130 [ 672.453928][ C1] ? print_other_cpu_stall+0x1140/0x1300 [ 672.459440][ C1] ? print_cpu_stall+0x590/0x590 [ 672.464171][ C1] ? acct_account_cputime+0xf7/0x2c0 [ 672.469291][ C1] ? rcu_sched_clock_irq+0xaeb/0x1330 [ 672.474497][ C1] ? rcu_boost_kthread_setaffinity+0x5a0/0x5a0 [ 672.480487][ C1] ? hrtimer_run_queues+0x15f/0x440 [ 672.485519][ C1] ? update_wall_time+0x25/0x30 [ 672.490205][ C1] ? update_process_times+0x149/0x1b0 [ 672.495500][ C1] ? tick_sched_timer+0x188/0x240 [ 672.500359][ C1] ? tick_setup_sched_timer+0x490/0x490 [ 672.505740][ C1] ? __hrtimer_run_queues+0x41a/0xad0 [ 672.510952][ C1] ? hrtimer_interrupt+0xaa0/0xaa0 [ 672.515899][ C1] ? clockevents_program_event+0x236/0x300 [ 672.521625][ C1] ? ktime_get_update_offsets_now+0x2ba/0x2d0 [ 672.527532][ C1] ? hrtimer_interrupt+0x40c/0xaa0 [ 672.532483][ C1] ? __sysvec_apic_timer_interrupt+0xfd/0x3c0 [ 672.538375][ C1] ? sysvec_apic_timer_interrupt+0x95/0xc0 [ 672.544016][ C1] [ 672.546797][ C1] [ 672.549581][ C1] ? asm_sysvec_apic_timer_interrupt+0x1b/0x20 [ 672.556091][ C1] ? get_signal+0x12af/0x1820 [ 672.560615][ C1] ? _raw_spin_unlock_irq+0x48/0x70 [ 672.565725][ C1] ? _raw_spin_unlock_irq+0x41/0x70 [ 672.570753][ C1] get_signal+0x14e6/0x1820 [ 672.575096][ C1] ? ptrace_notify+0x350/0x350 [ 672.579691][ C1] ? __kasan_check_write+0x14/0x20 [ 672.584639][ C1] arch_do_signal_or_restart+0xb0/0x16f0 [ 672.590105][ C1] ? __do_compat_sys_x32_rt_sigreturn+0x1e0/0x1e0 [ 672.596354][ C1] ? _raw_spin_lock_irq+0xa5/0x1b0 [ 672.601303][ C1] ? do_sigaltstack+0x3f9/0x630 [ 672.605999][ C1] ? get_sigframe_size+0x10/0x10 [ 672.610763][ C1] ? restore_altstack+0x107/0x150 [ 672.615630][ C1] ? __ia32_sys_sigaltstack+0x260/0x260 [ 672.621003][ C1] ? sched_clock_cpu+0x71/0x2b0 [ 672.625700][ C1] ? __do_sys_rt_sigreturn+0x160/0x1e0 [ 672.630987][ C1] exit_to_user_mode_loop+0x74/0xa0 [ 672.636022][ C1] exit_to_user_mode_prepare+0x5a/0xa0 [ 672.641314][ C1] syscall_exit_to_user_mode+0x26/0x140 [ 672.646705][ C1] do_syscall_64+0x49/0xb0 [ 672.650950][ C1] ? sysvec_apic_timer_interrupt+0x55/0xc0 [ 672.656588][ C1] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 672.662404][ C1] RIP: 0033:0x7f5abfb32417 [ 672.666655][ 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 [ 672.686185][ C1] RSP: 002b:00007f5abfaf3238 EFLAGS: 00000246 [ 672.692089][ C1] RAX: 00000000000000ca RBX: 00007f5abfbbc308 RCX: 00007f5abfb32419 [ 672.699984][ C1] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f5abfbbc308 [ 672.707794][ C1] RBP: 00007f5abfbbc300 R08: 00007f5abfaf36c0 R09: 00007f5abfaf36c0 [ 672.715605][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5abfbbc30c [ 672.723417][ C1] R13: 0000000000000000 R14: 00007ffd60cfede0 R15: 00007ffd60cfeec8 [ 672.731234][ C1] [ 715.499044][ C0] BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=0 stuck for 142s! [ 715.507870][ C0] Showing busy workqueues and worker pools: [ 715.513605][ C0] workqueue events: flags=0x0 [ 715.518112][ C0] pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 [ 715.518153][ C0] pending: psi_avgs_work [ 715.518186][ C0] pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 [ 715.518220][ C0] pending: vmstat_shepherd [ 715.518250][ C0] workqueue events_unbound: flags=0x2 [ 715.548081][ C0] pwq 4: cpus=0-1 flags=0x4 nice=0 active=2/512 refcnt=4 [ 715.548120][ C0] pending: toggle_allocation_gate, flush_memcg_stats_dwork [ 715.548161][ C0] workqueue events_power_efficient: flags=0x80 [ 715.568727][ C0] pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=5/256 refcnt=6 [ 715.568768][ C0] pending: neigh_managed_work, neigh_managed_work, neigh_periodic_work, neigh_periodic_work, check_lifetime [ 715.568862][ C0] pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 [ 715.568895][ C0] pending: gc_worker [ 715.568922][ C0] workqueue mm_percpu_wq: flags=0x8 [ 715.605162][ C0] pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 [ 715.605210][ C0] pending: vmstat_update [ 715.605245][ C0] pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 [ 715.605278][ C0] pending: vmstat_update [ 715.605307][ C0] workqueue writeback: flags=0x4a [ 715.634016][ C0] pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/256 refcnt=3 [ 715.634059][ C0] pending: wb_workfn [ 715.634088][ C0] workqueue kblockd: flags=0x18 [ 715.649807][ C0] pwq 3: cpus=1 node=0 flags=0x0 nice=-20 active=1/256 refcnt=2 [ 715.649847][ C0] pending: blk_mq_timeout_work [ 715.649885][ C0] workqueue dm_bufio_cache: flags=0x8 [ 715.667587][ C0] pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 [ 715.667632][ C0] pending: work_fn [ 715.667737][ C0] workqueue ipv6_addrconf: flags=0x40008 [ 715.684541][ C0] pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/1 refcnt=2 [ 715.684587][ C0] pending: addrconf_verify_work