Warning: Permanently added '10.128.0.223' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 895.498877][ T23] audit: type=1400 audit(1678049398.549:73): avc: denied { execmem } for pid=365 comm="syz-executor147" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 895.503906][ T23] audit: type=1400 audit(1678049398.549:74): avc: denied { write } for pid=366 comm="syz-executor147" name="vga_arbiter" dev="devtmpfs" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:xserver_misc_device_t tclass=chr_file permissive=1 [ 895.513120][ T23] audit: type=1400 audit(1678049398.549:75): avc: denied { open } for pid=366 comm="syz-executor147" path="/dev/vga_arbiter" dev="devtmpfs" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:xserver_misc_device_t tclass=chr_file permissive=1 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 998.022755][ C0] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 998.029776][ C0] rcu: 1-...!: (1 GPs behind) idle=aaa/1/0x4000000000000000 softirq=2304/2310 fqs=1 last_accelerate: e946/1059 dyntick_enabled: 1 [ 998.043237][ C0] (detected by 0, t=10002 jiffies, g=849, q=119) [ 998.049717][ C0] Sending NMI from CPU 0 to CPUs 1: [ 998.055900][ C0] NMI backtrace for cpu 1 [ 998.055906][ C0] CPU: 1 PID: 3615 Comm: syz-executor147 Not tainted 5.10.161-syzkaller-00019-g416c4356f372 #0 [ 998.055911][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 [ 998.055915][ C0] RIP: 0010:preempt_count_add+0xdc/0x1a0 [ 998.055924][ C0] Code: 08 65 48 8b 1c 25 80 6d 02 00 48 81 c3 00 0a 00 00 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 77 e0 5c 00 4c 89 33 <5b> 41 5e 41 5f 5d c3 e8 e8 2b 00 01 85 c0 74 88 48 c7 c0 38 2b 9f [ 998.055927][ C0] RSP: 0018:ffffc90000dc78b8 EFLAGS: 00000002 [ 998.055936][ C0] RAX: 0000000000000002 RBX: 0000000000000001 RCX: ffffffff86c37803 [ 998.055940][ C0] RDX: 0000000000000000 RSI: 0000000000000046 RDI: 0000000000000001 [ 998.055944][ C0] RBP: ffffc90000dc78d0 R08: ffffffff82c68f0f R09: 0000000000000003 [ 998.055949][ C0] R10: fffff520001b8f25 R11: 1ffff920001b8f24 R12: ffffc90000dc7930 [ 998.055953][ C0] R13: ffffffff86d37d40 R14: 1ffff920001b8f20 R15: dffffc0000000000 [ 998.055957][ C0] FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 998.055961][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 998.055965][ C0] CR2: 00007f03fe1d6b08 CR3: 000000000620f000 CR4: 00000000003506a0 [ 998.055970][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 998.055974][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 998.055976][ C0] Call Trace: [ 998.055980][ C0] _raw_spin_lock_irqsave+0xbe/0x210 [ 998.055983][ C0] ? _raw_spin_lock+0x1b0/0x1b0 [ 998.055986][ C0] ? __fsnotify_parent+0x4b4/0x6c0 [ 998.055989][ C0] vga_arb_release+0x231/0xa00 [ 998.055992][ C0] ? vga_arb_open+0x220/0x220 [ 998.055994][ C0] __fput+0x348/0x7c0 [ 998.055997][ C0] ____fput+0x15/0x20 [ 998.056000][ C0] task_work_run+0x147/0x1b0 [ 998.056003][ C0] do_exit+0x63c/0x2340 [ 998.056006][ C0] ? get_task_struct+0x80/0x80 [ 998.056009][ C0] ? security_file_permission+0xa8/0xc0 [ 998.056012][ C0] ? rw_verify_area+0x1c2/0x360 [ 998.056014][ C0] ? __kasan_check_write+0x14/0x20 [ 998.056017][ C0] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 998.056020][ C0] do_group_exit+0x13a/0x300 [ 998.056023][ C0] ? __kasan_check_write+0x14/0x20 [ 998.056026][ C0] get_signal+0xe17/0x1440 [ 998.056029][ C0] arch_do_signal+0x8e/0x650 [ 998.056033][ C0] ? __do_sys_rt_sigreturn+0x1e0/0x1e0 [ 998.056036][ C0] exit_to_user_mode_loop+0xa3/0xe0 [ 998.056039][ C0] syscall_exit_to_user_mode+0x77/0xa0 [ 998.056042][ C0] do_syscall_64+0x40/0x70 [ 998.056045][ C0] entry_SYSCALL_64_after_hwframe+0x61/0xc6 [ 998.056048][ C0] RIP: 0033:0x7f03fe1818e9 [ 998.056052][ C0] Code: Unable to access opcode bytes at RIP 0x7f03fe1818bf. [ 998.056055][ C0] RSP: 002b:00007f03fe112318 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 998.056063][ C0] RAX: 0000000000000001 RBX: 00007f03fe2093f8 RCX: 00007f03fe1818e9 [ 998.056067][ C0] RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f03fe2093fc [ 998.056072][ C0] RBP: 00007f03fe2093f0 R08: 0000000000000000 R09: 0000000000000000 [ 998.056076][ C0] R10: 00007f03fe112700 R11: 0000000000000246 R12: 61206b636f6c6e75 [ 998.056080][ C0] R13: 00007ffcb6f864ff R14: 00007f03fe112400 R15: 0000000000022000 [ 998.056093][ C0] rcu: rcu_preempt kthread starved for 10000 jiffies! g849 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 998.383011][ C0] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. [ 998.392959][ C0] rcu: RCU grace-period kthread stack dump: [ 998.398830][ C0] task:rcu_preempt state:R running task stack: 0 pid: 13 ppid: 2 flags:0x00004000 [ 998.409672][ C0] Call Trace: [ 998.412959][ C0] __schedule+0x866/0xc00 [ 998.417301][ C0] ? release_firmware_map_entry+0x194/0x194 [ 998.423563][ C0] ? _raw_spin_lock+0x1b0/0x1b0 [ 998.428491][ C0] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 998.433676][ C0] schedule+0x14b/0x1e0 [ 998.437817][ C0] schedule_timeout+0x19b/0x430 [ 998.442827][ C0] ? __kasan_check_write+0x14/0x20 [ 998.447919][ C0] ? console_conditional_schedule+0x10/0x10 [ 998.454055][ C0] ? run_local_timers+0x160/0x160 [ 998.459083][ C0] rcu_gp_kthread+0xf59/0x2440 [ 998.463851][ C0] ? _raw_spin_unlock_irq+0x4e/0x70 [ 998.469033][ C0] ? dump_blkd_tasks+0x7f0/0x7f0 [ 998.473952][ C0] ? rcu_barrier_callback+0x50/0x50 [ 998.479337][ C0] ? _raw_spin_lock+0x1b0/0x1b0 [ 998.484273][ C0] ? __kasan_check_read+0x11/0x20 [ 998.489281][ C0] ? __kthread_parkme+0xba/0x1d0 [ 998.495072][ C0] kthread+0x349/0x3d0 [ 998.499407][ C0] ? rcu_barrier_callback+0x50/0x50 [ 998.504947][ C0] ? kthread_blkcg+0xd0/0xd0 [ 998.509526][ C0] ret_from_fork+0x1f/0x30 [ 1145.612770][ C0] BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=0 stuck for 246s! [ 1145.621743][ C0] BUG: workqueue lockup - pool cpus=0-1 flags=0x4 nice=0 stuck for 245s! [ 1145.630169][ C0] Showing busy workqueues and worker pools: [ 1145.636055][ C0] workqueue events: flags=0x0 [ 1145.640708][ C0] pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=2/256 refcnt=3 [ 1145.648452][ C0] pending: vmstat_shepherd, psi_avgs_work [ 1145.654809][ C0] workqueue events_unbound: flags=0x2 [ 1145.660157][ C0] pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/512 refcnt=3 [ 1145.667345][ C0] in-flight: 7:toggle_allocation_gate [ 1145.673072][ C0] workqueue events_power_efficient: flags=0x80 [ 1145.679203][ C0] pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=3/256 refcnt=4 [ 1145.686827][ C0] pending: neigh_periodic_work, gc_worker, check_lifetime [ 1145.694308][ C0] workqueue mm_percpu_wq: flags=0x8 [ 1145.699485][ C0] pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 [ 1145.707131][ C0] pending: vmstat_update [ 1145.711731][ C0] workqueue writeback: flags=0x4a [ 1145.716869][ C0] pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/256 refcnt=3 [ 1145.724062][ C0] pending: wb_workfn [ 1145.728326][ C0] pool 4: cpus=0-1 flags=0x4 nice=0 hung=245s workers=3 idle: 9 177