cure } for pid=274 comm="sshd" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 25.933894][ T28] audit: type=1400 audit(1709185771.460:63): avc: denied { write } for pid=274 comm="sh" path="pipe:[12728]" dev="pipefs" ino=12728 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:sshd_t tclass=fifo_file permissive=1 [ 25.957091][ T28] audit: type=1400 audit(1709185771.470:64): avc: denied { rlimitinh } for pid=274 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 25.976916][ T28] audit: type=1400 audit(1709185771.470:65): avc: denied { siginh } for pid=274 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 Warning: Permanently added '10.128.0.240' (ED25519) to the list of known hosts. executing program executing program executing program executing program executing program [ 440.294064][ T28] audit: type=1400 audit(1709186185.830:66): avc: denied { execmem } for pid=700 comm="syz-executor179" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 540.332788][ C0] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 540.339693][ C0] (detected by 0, t=10002 jiffies, g=4697, q=23 ncpus=2) [ 540.346635][ C0] rcu: All QSes seen, last rcu_preempt kthread activity 10003 (4294991232-4294981229), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 540.359924][ C0] rcu: rcu_preempt kthread starved for 10004 jiffies! g4697 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 540.370942][ C0] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. [ 540.380919][ C0] rcu: RCU grace-period kthread stack dump: [ 540.386654][ C0] task:rcu_preempt state:R running task stack:27720 pid:14 ppid:2 flags:0x00004000 [ 540.397241][ C0] Call Trace: [ 540.400362][ C0] [ 540.403139][ C0] __schedule+0xc99/0x1540 [ 540.407847][ C0] ? __sched_text_start+0x8/0x8 [ 540.412602][ C0] ? __kasan_check_write+0x14/0x20 [ 540.417633][ C0] schedule+0xc3/0x180 [ 540.421546][ C0] schedule_timeout+0x18c/0x380 [ 540.426221][ C0] ? _raw_spin_unlock_irq+0x4d/0x70 [ 540.431260][ C0] ? console_conditional_schedule+0x10/0x10 [ 540.436985][ C0] ? update_process_times+0x1b0/0x1b0 [ 540.442290][ C0] ? prepare_to_swait_event+0x308/0x320 [ 540.447850][ C0] rcu_gp_fqs_loop+0x2ed/0x1060 [ 540.452528][ C0] ? _raw_spin_unlock_irq+0x4d/0x70 [ 540.457586][ C0] ? rcu_gp_init+0xc7f/0xf80 [ 540.462881][ C0] ? rcu_gp_init+0xf80/0xf80 [ 540.467396][ C0] ? _raw_spin_unlock_irqrestore+0x5b/0x80 [ 540.473033][ C0] ? finish_swait+0x17d/0x1b0 [ 540.477550][ C0] rcu_gp_kthread+0xa3/0x390 [ 540.481971][ C0] ? queued_spin_lock_slowpath+0x50/0x50 [ 540.487436][ C0] ? set_cpus_allowed_ptr+0xa4/0xe0 [ 540.492475][ C0] ? __kasan_check_read+0x11/0x20 [ 540.497334][ C0] ? __kthread_parkme+0x12d/0x180 [ 540.502374][ C0] kthread+0x26d/0x300 [ 540.506273][ C0] ? queued_spin_lock_slowpath+0x50/0x50 [ 540.511742][ C0] ? kthread_blkcg+0xd0/0xd0 [ 540.516172][ C0] ret_from_fork+0x1f/0x30 [ 540.520430][ C0] [ 540.523300][ C0] rcu: Stack dump where RCU GP kthread last ran: [ 540.529457][ C0] CPU: 0 PID: 710 Comm: syz-executor179 Not tainted 6.1.68-syzkaller-00045-g4289e1348ea3 #0 [ 540.539345][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 [ 540.549328][ C0] RIP: 0010:fpu__alloc_mathframe+0xa3/0x150 [ 540.555053][ C0] Code: 44 00 00 e8 9f 04 44 00 83 c3 04 4c 89 75 c8 41 89 df 4d 29 fd 49 83 e5 c0 4c 89 e0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 4c 89 e7 e8 df cc 8a 00 4d 89 2c 24 31 ff 44 8b [ 540.574588][ C0] RSP: 0018:ffffc90001db7b38 EFLAGS: 00000a06 [ 540.580505][ C0] RAX: 1ffff920003b6f84 RBX: 0000000000000344 RCX: dffffc0000000000 [ 540.588400][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007f48929081b8 [ 540.596200][ C0] RBP: ffffc90001db7b70 R08: dffffc0000000000 R09: ffffed1021c95799 [ 540.604102][ C0] R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc90001db7c20 [ 540.611999][ C0] R13: 00007f4892907e40 R14: ffffc90001db7c00 R15: 0000000000000344 [ 540.619981][ C0] FS: 00007f48929086c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 540.628920][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 540.635341][ C0] CR2: 00007f4892907e40 CR3: 000000011f13c000 CR4: 00000000003506b0 [ 540.643160][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 540.650974][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 540.659187][ C0] Call Trace: [ 540.662305][ C0] [ 540.665121][ C0] ? show_regs+0x58/0x60 [ 540.669253][ C0] ? dump_cpu_task+0x3c/0x70 [ 540.673686][ C0] ? rcu_check_gp_kthread_starvation+0x1d1/0x240 [ 540.679924][ C0] ? _find_next_bit+0x126/0x130 [ 540.684617][ C0] ? print_other_cpu_stall+0x1140/0x1300 [ 540.690199][ C0] ? print_cpu_stall+0x590/0x590 [ 540.694961][ C0] ? acct_account_cputime+0xf7/0x2c0 [ 540.700100][ C0] ? rcu_sched_clock_irq+0xaeb/0x1330 [ 540.706078][ C0] ? rcu_boost_kthread_setaffinity+0x5a0/0x5a0 [ 540.712072][ C0] ? hrtimer_run_queues+0x15f/0x440 [ 540.717106][ C0] ? tick_setup_sched_timer+0x490/0x490 [ 540.722588][ C0] ? update_process_times+0x149/0x1b0 [ 540.727843][ C0] ? tick_sched_timer+0x188/0x240 [ 540.732849][ C0] ? tick_setup_sched_timer+0x490/0x490 [ 540.738417][ C0] ? __hrtimer_run_queues+0x41a/0xad0 [ 540.742800][ C1] sched: RT throttling activated [ 540.748579][ C0] ? hrtimer_interrupt+0xaa0/0xaa0 [ 540.753600][ C0] ? clockevents_program_event+0x22f/0x300 [ 540.759239][ C0] ? ktime_get_update_offsets_now+0x2ba/0x2d0 [ 540.765130][ C0] ? hrtimer_interrupt+0x40c/0xaa0 [ 540.770104][ C0] ? __sysvec_apic_timer_interrupt+0xfd/0x3c0 [ 540.776065][ C0] ? sysvec_apic_timer_interrupt+0x95/0xc0 [ 540.781872][ C0] [ 540.784662][ C0] [ 540.787425][ C0] ? asm_sysvec_apic_timer_interrupt+0x1b/0x20 [ 540.793933][ C0] ? fpu__alloc_mathframe+0xa3/0x150 [ 540.799047][ C0] ? fpu__alloc_mathframe+0x81/0x150 [ 540.804175][ C0] get_sigframe+0x29b/0x4b0 [ 540.808655][ C0] ? restore_sigcontext+0x700/0x700 [ 540.813828][ C0] ? ptrace_notify+0x350/0x350 [ 540.818413][ C0] ? __kasan_check_write+0x14/0x20 [ 540.823375][ C0] arch_do_signal_or_restart+0x2ac/0x16f0 [ 540.828924][ C0] ? _raw_spin_lock_irq+0xa5/0x1b0 [ 540.833872][ C0] ? do_sigaltstack+0x3f9/0x630 [ 540.838557][ C0] ? get_sigframe_size+0x10/0x10 [ 540.843430][ C0] ? restore_altstack+0x107/0x150 [ 540.848324][ C0] ? __ia32_sys_sigaltstack+0x260/0x260 [ 540.854122][ C0] ? sched_clock_cpu+0x71/0x2b0 [ 540.858805][ C0] ? __do_sys_rt_sigreturn+0x160/0x1e0 [ 540.864194][ C0] exit_to_user_mode_loop+0x74/0xa0 [ 540.869306][ C0] exit_to_user_mode_prepare+0x5a/0xa0 [ 540.874691][ C0] syscall_exit_to_user_mode+0x26/0x140 [ 540.880419][ C0] do_syscall_64+0x49/0xb0 [ 540.884665][ C0] ? sysvec_apic_timer_interrupt+0x55/0xc0 [ 540.890332][ C0] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 540.896039][ C0] RIP: 0033:0x7f4892947417 [ 540.900394][ 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 [ 540.920038][ C0] RSP: 002b:00007f4892908238 EFLAGS: 00000246 [ 540.925917][ C0] RAX: 00000000000000ca RBX: 00007f48929d1308 RCX: 00007f4892947419 [ 540.933846][ C0] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f48929d1308 [ 540.941646][ C0] RBP: 00007f48929d1300 R08: 00007f48929086c0 R09: 00007f48929086c0 [ 540.949541][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f48929d130c [ 540.957443][ C0] R13: 0000000000000000 R14: 00007ffe4f8dd510 R15: 00007ffe4f8dd5f8 [ 540.965638][ C0] [ 715.712731][ C0] BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=0 stuck for 274s! [ 715.721531][ C0] BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 173s! [ 715.730240][ C0] BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=-20 stuck for 174s! [ 715.739210][ C0] BUG: workqueue lockup - pool cpus=0-1 flags=0x4 nice=0 stuck for 174s! [ 715.748700][ C0] Showing busy workqueues and worker pools: [ 715.754516][ C0] workqueue events: flags=0x0 [ 715.759007][ C0] pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=2/256 refcnt=3 [ 715.759102][ C0] pending: vmstat_shepherd, psi_avgs_work [ 715.759232][ C0] workqueue events_unbound: flags=0x2 [ 715.778009][ C0] pwq 4: cpus=0-1 flags=0x4 nice=0 active=2/512 refcnt=4 [ 715.778094][ C0] in-flight: 37:toggle_allocation_gate [ 715.778157][ C0] pending: flush_memcg_stats_dwork [ 715.778222][ C0] workqueue events_power_efficient: flags=0x80 [ 715.802277][ C0] pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=6/256 refcnt=7 [ 715.802375][ C0] pending: neigh_managed_work, neigh_periodic_work, neigh_managed_work, neigh_periodic_work, gc_worker, check_lifetime [ 715.823217][ C0] workqueue mm_percpu_wq: flags=0x8 [ 715.828202][ C0] pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 [ 715.828297][ C0] pending: vmstat_update [ 715.828369][ C0] pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 [ 715.828458][ C0] pending: vmstat_update [ 715.828544][ C0] workqueue writeback: flags=0x4a [ 715.859018][ C0] pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/256 refcnt=3 [ 715.859105][ C0] pending: wb_workfn [ 715.859159][ C0] workqueue kblockd: flags=0x18 [ 715.875099][ C0] pwq 3: cpus=1 node=0 flags=0x0 nice=-20 active=2/256 refcnt=3 [ 715.875204][ C0] pending: blk_mq_requeue_work, blk_mq_timeout_work [ 715.875298][ C0] workqueue dm_bufio_cache: flags=0x8 [ 715.894948][ C0] pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 [ 715.895042][ C0] pending: work_fn [ 715.895118][ C0] workqueue ipv6_addrconf: flags=0x40008 [ 715.911965][ C0] pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/1 refcnt=2 [ 715.912057][ C0] pending: addrconf_verify_work [ 715.912208][ C0] pool 4: cpus=0-1 flags=0x4 nice=0 hung=175s workers=3 idle: 10 8