Warning: Permanently added '10.128.1.126' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 566.336464][ T25] audit: type=1400 audit(1634435947.677:8): avc: denied { execmem } for pid=6547 comm="syz-executor000" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 566.375799][ C0] hrtimer: interrupt took 40402 ns executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 671.574860][ C0] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 671.581845][ C0] (detected by 0, t=10502 jiffies, g=11469, q=53) [ 671.588352][ C0] rcu: All QSes seen, last rcu_preempt kthread activity 10503 (4295004315-4294993812), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 671.601718][ C0] rcu: rcu_preempt kthread starved for 10504 jiffies! g11469 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 671.612919][ C0] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. [ 671.622892][ C0] rcu: RCU grace-period kthread stack dump: [ 671.628786][ C0] task:rcu_preempt state:R running task stack:28568 pid: 14 ppid: 2 flags:0x00004000 [ 671.639660][ C0] Call Trace: [ 671.642946][ C0] __schedule+0xb44/0x5960 [ 671.647720][ C0] ? _raw_spin_unlock_irqrestore+0x50/0x70 [ 671.653581][ C0] ? __mod_timer+0x83c/0xe30 [ 671.658241][ C0] ? run_timer_softirq+0x160/0x1d0 [ 671.663381][ C0] ? io_schedule_timeout+0x140/0x140 [ 671.668687][ C0] ? debug_object_destroy+0x210/0x210 [ 671.674140][ C0] schedule+0xd3/0x270 [ 671.678229][ C0] schedule_timeout+0x14a/0x2a0 [ 671.683113][ C0] ? usleep_range+0x170/0x170 [ 671.687819][ C0] ? destroy_timer_on_stack+0x20/0x20 [ 671.693220][ C0] ? btrfs_read_block_groups.cold+0x163/0x238 [ 671.699410][ C0] ? _raw_spin_unlock_irqrestore+0x3d/0x70 [ 671.705237][ C0] ? prepare_to_swait_event+0xee/0x470 [ 671.710765][ C0] rcu_gp_fqs_loop+0x186/0x800 [ 671.715578][ C0] ? force_qs_rnp+0x760/0x760 [ 671.720279][ C0] ? rcu_gp_init+0x906/0x12a0 [ 671.724977][ C0] rcu_gp_kthread+0x1de/0x320 [ 671.729671][ C0] ? rcu_gp_init+0x12a0/0x12a0 [ 671.734453][ C0] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 671.740802][ C0] ? __kthread_parkme+0x15f/0x220 [ 671.745868][ C0] ? rcu_gp_init+0x12a0/0x12a0 [ 671.750645][ C0] kthread+0x3e5/0x4d0 [ 671.754725][ C0] ? set_kthread_struct+0x130/0x130 [ 671.759935][ C0] ret_from_fork+0x1f/0x30 [ 671.764385][ C0] rcu: Stack dump where RCU GP kthread last ran: [ 671.771013][ C0] Sending NMI from CPU 0 to CPUs 1: [ 671.776222][ C1] NMI backtrace for cpu 1 [ 671.776232][ C1] CPU: 1 PID: 6614 Comm: syz-executor000 Not tainted 5.15.0-rc5-syzkaller #0 [ 671.776254][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 671.776265][ C1] RIP: 0010:debug_object_deactivate+0x2/0x300 [ 671.776295][ C1] Code: ff ff 48 89 cf 48 89 54 24 18 48 89 4c 24 10 e8 b4 75 de fd 48 8b 54 24 18 48 8b 4c 24 10 e9 e2 f4 ff ff 0f 1f 44 00 00 41 57 <41> 56 41 55 41 54 49 bc 00 00 00 00 00 fc ff df 55 53 48 81 ec b0 [ 671.776315][ C1] RSP: 0018:ffffc90000fd8e30 EFLAGS: 00000046 [ 671.776331][ C1] RAX: 0000000080010001 RBX: ffff888073ea6ed8 RCX: 0000000000000000 [ 671.776345][ C1] RDX: ffff88802772a200 RSI: ffffffff898ddd80 RDI: ffff888073ea6ed8 [ 671.776359][ C1] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 [ 671.776371][ C1] R10: ffffffff8165bd95 R11: 0000000000000000 R12: 0000009c6c0edc8a [ 671.776385][ C1] R13: ffff8880b9d22440 R14: ffff8880b9d223c0 R15: ffff8880b9d223c0 [ 671.776399][ C1] FS: 00007f81244a0700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 671.776417][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 671.776432][ C1] CR2: 0000000020000280 CR3: 0000000077e35000 CR4: 00000000003506e0 [ 671.776445][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 671.776457][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 671.776470][ C1] Call Trace: [ 671.776475][ C1] [ 671.776481][ C1] __hrtimer_run_queues+0x3f8/0xe50 [ 671.776503][ C1] ? lock_release+0x720/0x720 [ 671.776575][ C1] ? hrtimer_sleeper_start_expires+0x80/0x80 [ 671.776601][ C1] ? ktime_get_update_offsets_now+0x3eb/0x5c0 [ 671.776625][ C1] hrtimer_interrupt+0x31c/0x790 [ 671.776646][ C1] __sysvec_apic_timer_interrupt+0x146/0x530 [ 671.776681][ C1] sysvec_apic_timer_interrupt+0x8e/0xc0 [ 671.776731][ C1] [ 671.776736][ C1] asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 671.776765][ C1] RIP: 0010:lock_is_held_type+0x51/0x140 [ 671.776789][ C1] Code: cb 76 85 c0 0f 85 c8 00 00 00 65 4c 8b 24 25 40 f0 01 00 41 8b 94 24 1c 0a 00 00 85 d2 0f 85 af 00 00 00 48 89 fd 41 89 f6 9c <8f> 04 24 fa 48 c7 c7 60 e9 8b 89 31 db e8 2d 0e 00 00 41 8b 84 24 [ 671.776808][ C1] RSP: 0018:ffffc90002ee76f0 EFLAGS: 00000246 [ 671.776823][ C1] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 [ 671.776835][ C1] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: ffffffff8b97efe0 [ 671.776849][ C1] RBP: ffffffff8b97efe0 R08: ffffffff842f564e R09: ffff8880b9d32a8b [ 671.776863][ C1] R10: ffffffff842f5271 R11: 0000000000086089 R12: ffff88802772a200 [ 671.776877][ C1] R13: 00000000ffffffff R14: 00000000ffffffff R15: ffff88801f08c7c0 [ 671.776891][ C1] ? tty_open+0x181/0x1000 [ 671.776937][ C1] ? tty_open+0x55e/0x1000 [ 671.776958][ C1] ___might_sleep+0x3a/0x2c0 [ 671.776994][ C1] __mutex_lock+0xa1/0x12f0 [ 671.777016][ C1] ? tty_open+0x55e/0x1000 [ 671.777035][ C1] ? kmem_cache_alloc_trace+0x40/0x480 [ 671.777078][ C1] ? mutex_lock_io_nested+0x1150/0x1150 [ 671.777101][ C1] ? rcu_read_lock_sched_held+0x3a/0x70 [ 671.777122][ C1] ? trace_kmalloc+0x32/0xf0 [ 671.777142][ C1] ? kmem_cache_alloc_trace+0x1fd/0x480 [ 671.777166][ C1] tty_open+0x55e/0x1000 [ 671.777187][ C1] ? tty_init_dev+0x80/0x80 [ 671.777206][ C1] ? rwlock_bug.part.0+0x90/0x90 [ 671.777229][ C1] ? tty_init_dev+0x80/0x80 [ 671.777249][ C1] chrdev_open+0x266/0x770 [ 671.777307][ C1] ? cdev_device_add+0x210/0x210 [ 671.777329][ C1] ? fsnotify_perm.part.0+0x22d/0x620 [ 671.777402][ C1] do_dentry_open+0x4c8/0x11d0 [ 671.777442][ C1] ? cdev_device_add+0x210/0x210 [ 671.777464][ C1] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 671.777490][ C1] ? may_open+0x1f6/0x420 [ 671.777509][ C1] path_openat+0x1c9a/0x2740 [ 671.777531][ C1] ? path_lookupat+0x860/0x860 [ 671.777553][ C1] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 671.777576][ C1] do_filp_open+0x1aa/0x400 [ 671.777603][ C1] ? may_open_dev+0xf0/0xf0 [ 671.777625][ C1] ? rwlock_bug.part.0+0x90/0x90 [ 671.777648][ C1] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 671.777672][ C1] ? _find_next_bit+0x1e3/0x260 [ 671.777713][ C1] ? _raw_spin_unlock+0x24/0x40 [ 671.777736][ C1] ? alloc_fd+0x2f0/0x670 [ 671.777765][ C1] do_sys_openat2+0x16d/0x4d0 [ 671.777790][ C1] ? build_open_flags+0x6f0/0x6f0 [ 671.777814][ C1] ? asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 671.777843][ C1] __x64_sys_openat+0x13f/0x1f0 [ 671.777867][ C1] ? __ia32_sys_open+0x1c0/0x1c0 [ 671.777892][ C1] ? syscall_enter_from_user_mode+0x2b/0x70 [ 671.777917][ C1] do_syscall_64+0x35/0xb0 [ 671.777936][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 671.777963][ C1] RIP: 0033:0x7f81244eeaf9 [ 671.777984][ C1] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 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 b8 ff ff ff f7 d8 64 89 01 48 [ 671.778004][ C1] RSP: 002b:00007f81244a0318 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 671.778023][ C1] RAX: ffffffffffffffda RBX: 00007f81245763e8 RCX: 00007f81244eeaf9 [ 671.778037][ C1] RDX: 0000000000000802 RSI: 0000000020000840 RDI: ffffffffffffff9c [ 671.778050][ C1] RBP: 00007f81245763e0 R08: 0000000000000000 R09: 0000000000000000 [ 671.778063][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 7974742f7665642f [ 671.778076][ C1] R13: 00007ffcdc3371ff R14: 00007f81244a0400 R15: 0000000000022000 [ 671.778093][ C1] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.871 msecs