DUID 00:04:2f:bc:f2:2f:e4:1d:55:f7:99:3b:0f:15:66:5c:e9:07 forked to background, child pid 3183 [ 28.739142][ T3184] 8021q: adding VLAN 0 to HW filter on device bond0 [ 28.752335][ T3184] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller syzkaller login: [ 76.274555][ T1156] cfg80211: failed to load regulatory.db Warning: Permanently added '10.128.0.147' (ECDSA) to the list of known hosts. executing program executing program executing program [ 541.850147][ C1] hrtimer: interrupt took 33051 ns [ 541.974385][ T26] audit: type=1804 audit(1640319612.123:2): pid=3636 uid=0 auid=4294967295 ses=4294967295 subj=_ op=invalid_pcr cause=open_writers comm="syz-executor587" name="/root/bus" dev="sda1" ino=1137 res=1 errno=0 executing program executing program executing program executing program executing program executing program [ 545.324944][ T26] audit: type=1804 audit(1640319612.133:3): pid=3641 uid=0 auid=4294967295 ses=4294967295 subj=_ op=invalid_pcr cause=open_writers comm="syz-executor587" name="/root/bus" dev="sda1" ino=1137 res=1 errno=0 executing program [ 545.663983][ T26] audit: type=1804 audit(1640319612.623:4): pid=3643 uid=0 auid=4294967295 ses=4294967295 subj=_ op=invalid_pcr cause=ToMToU comm="syz-executor587" name="/root/bus" dev="sda1" ino=1137 res=1 errno=0 [ 545.807584][ T26] audit: type=1804 audit(1640319613.043:5): pid=3643 uid=0 auid=4294967295 ses=4294967295 subj=_ op=invalid_pcr cause=ToMToU comm="syz-executor587" name="/root/bus" dev="sda1" ino=1137 res=1 errno=0 [ 545.827499][ T26] audit: type=1804 audit(1640319613.063:6): pid=3643 uid=0 auid=4294967295 ses=4294967295 subj=_ op=invalid_pcr cause=open_writers comm="syz-executor587" name="/root/bus" dev="sda1" ino=1137 res=1 errno=0 [ 545.847632][ T26] audit: type=1804 audit(1640319614.513:7): pid=3642 uid=0 auid=4294967295 ses=4294967295 subj=_ op=invalid_pcr cause=ToMToU comm="syz-executor587" name="/root/bus" dev="sda1" ino=1137 res=1 errno=0 [ 545.945534][ T26] audit: type=1804 audit(1640319615.363:8): pid=3642 uid=0 auid=4294967295 ses=4294967295 subj=_ op=invalid_pcr cause=ToMToU comm="syz-executor587" name="/root/bus" dev="sda1" ino=1137 res=1 errno=0 [ 545.965246][ T26] audit: type=1804 audit(1640319615.383:9): pid=3642 uid=0 auid=4294967295 ses=4294967295 subj=_ op=invalid_pcr cause=open_writers comm="syz-executor587" name="/root/bus" dev="sda1" ino=1137 res=1 errno=0 [ 546.082273][ T26] audit: type=1804 audit(1640319615.483:10): pid=3644 uid=0 auid=4294967295 ses=4294967295 subj=_ op=invalid_pcr cause=ToMToU comm="syz-executor587" name="/root/bus" dev="sda1" ino=1137 res=1 errno=0 [ 651.092862][ C1] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 651.099897][ C1] (detected by 1, t=10502 jiffies, g=5077, q=32) [ 651.106322][ C1] rcu: All QSes seen, last rcu_preempt kthread activity 3349 (4295002251-4294998902), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 651.119608][ C1] rcu: rcu_preempt kthread starved for 3350 jiffies! g5077 f0x2 RCU_GP_CLEANUP(7) ->state=0x0 ->cpu=1 [ 651.130550][ C1] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. [ 651.141263][ C1] rcu: RCU grace-period kthread stack dump: [ 651.147137][ C1] task:rcu_preempt state:R running task stack:26576 pid: 14 ppid: 2 flags:0x00004000 [ 651.157900][ C1] Call Trace: [ 651.161164][ C1] [ 651.164169][ C1] __schedule+0xb72/0x1460 [ 651.168653][ C1] ? release_firmware_map_entry+0x182/0x182 [ 651.174535][ C1] ? lockdep_hardirqs_on_prepare+0x412/0x780 [ 651.180537][ C1] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 651.187325][ C1] ? print_irqtrace_events+0x220/0x220 [ 651.192786][ C1] ? preempt_schedule_thunk+0x16/0x18 [ 651.198154][ C1] preempt_schedule+0x14d/0x190 [ 651.203009][ C1] ? schedule_preempt_disabled+0x20/0x20 [ 651.208626][ C1] ? lockdep_hardirqs_on+0x95/0x140 [ 651.213830][ C1] preempt_schedule_thunk+0x16/0x18 [ 651.219016][ C1] ? trace_hardirqs_on+0x30/0x80 [ 651.224013][ C1] _raw_spin_unlock_irq+0x3c/0x40 [ 651.229025][ C1] rcu_gp_cleanup+0x4f4/0xbc0 [ 651.233686][ C1] ? finish_swait+0xc2/0x1d0 [ 651.238305][ C1] ? rcu_gp_init+0x1160/0x1160 [ 651.243053][ C1] ? rcu_gp_fqs_loop+0x770/0x770 [ 651.247974][ C1] ? finish_swait+0xc2/0x1d0 [ 651.252553][ C1] rcu_gp_kthread+0xb3/0x350 [ 651.257132][ C1] ? rcu_report_qs_rsp+0x1a0/0x1a0 [ 651.262225][ C1] ? _raw_spin_unlock_irqrestore+0xd9/0x130 [ 651.268106][ C1] ? __kthread_parkme+0x166/0x1c0 [ 651.273247][ C1] kthread+0x468/0x490 [ 651.277299][ C1] ? rcu_report_qs_rsp+0x1a0/0x1a0 [ 651.282392][ C1] ? kthread_blkcg+0xd0/0xd0 [ 651.286966][ C1] ret_from_fork+0x1f/0x30 [ 651.291385][ C1] [ 651.294389][ C1] rcu: Stack dump where RCU GP kthread last ran: [ 651.300705][ C1] NMI backtrace for cpu 1 [ 651.305012][ C1] CPU: 1 PID: 3645 Comm: syz-executor587 Not tainted 5.16.0-rc6-syzkaller #0 [ 651.313766][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 651.323801][ C1] Call Trace: [ 651.327064][ C1] [ 651.329895][ C1] dump_stack_lvl+0x1dc/0x2d8 [ 651.334610][ C1] ? show_regs_print_info+0x12/0x12 [ 651.339794][ C1] ? log_buf_vmcoreinfo_setup+0x498/0x498 [ 651.345542][ C1] nmi_cpu_backtrace+0x45f/0x490 [ 651.350486][ C1] ? wake_up_klogd+0xbb/0xf0 [ 651.355063][ C1] ? nmi_trigger_cpumask_backtrace+0x280/0x280 [ 651.361202][ C1] ? _printk+0xcf/0x118 [ 651.365343][ C1] ? rcu_check_gp_kthread_starvation+0x1c9/0x270 [ 651.371655][ C1] ? log_buf_vmcoreinfo_setup+0x498/0x498 [ 651.377365][ C1] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 651.383473][ C1] nmi_trigger_cpumask_backtrace+0x16a/0x280 [ 651.389440][ C1] rcu_check_gp_kthread_starvation+0x1ff/0x270 [ 651.395580][ C1] rcu_sched_clock_irq+0x23d5/0x2bc0 [ 651.400867][ C1] ? rcutree_dead_cpu+0x20/0x20 [ 651.405713][ C1] ? hrtimer_run_queues+0x162/0x450 [ 651.410955][ C1] update_process_times+0x197/0x200 [ 651.416139][ C1] tick_sched_timer+0x27d/0x420 [ 651.421001][ C1] __hrtimer_run_queues+0x4cb/0xa60 [ 651.426189][ C1] ? tick_setup_sched_timer+0x2c0/0x2c0 [ 651.431722][ C1] ? hrtimer_interrupt+0x1040/0x1040 [ 651.436994][ C1] ? ktime_get_update_offsets_now+0x449/0x460 [ 651.443049][ C1] hrtimer_interrupt+0x3b3/0x1040 [ 651.448077][ C1] ? irq_exit_rcu+0x20/0x20 [ 651.452604][ C1] __sysvec_apic_timer_interrupt+0xf9/0x270 [ 651.458484][ C1] sysvec_apic_timer_interrupt+0x8c/0xb0 [ 651.464851][ C1] [ 651.467768][ C1] [ 651.470689][ C1] asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 651.476717][ C1] RIP: 0010:unwind_next_frame+0xaa1/0x1fc0 [ 651.482536][ C1] Code: 42 8a 04 30 84 c0 48 8b 5c 24 78 48 8b 6c 24 20 0f 85 e1 11 00 00 c6 03 00 ba 10 00 00 00 48 8b 7c 24 28 31 f6 e8 af b0 95 00 66 04 00 00 48 89 5c 24 60 49 8d 7d 08 48 89 f8 48 c1 e8 03 42 [ 651.502123][ C1] RSP: 0018:ffffc900027de900 EFLAGS: 00000202 [ 651.508183][ C1] RAX: ffffc900027dea10 RBX: ffffc900027de9f5 RCX: 0000000000000000 [ 651.516418][ C1] RDX: 0000000000000010 RSI: 0000000000000000 RDI: ffffc900027dea20 [ 651.524374][ C1] RBP: ffffffff8e814392 R08: dffffc0000000000 R09: ffffc900027dea10 [ 651.532636][ C1] R10: fffff520004fbd44 R11: 0000000000000000 R12: 1ffffffff1d02872 [ 651.540721][ C1] R13: ffffc900027de9c0 R14: dffffc0000000000 R15: ffffffff8e814396 [ 651.548717][ C1] ? save_stack+0xff/0x200 [ 651.553302][ C1] ? stack_trace_save+0x1e0/0x1e0 [ 651.558325][ C1] arch_stack_walk+0x112/0x140 [ 651.563149][ C1] ? __set_page_owner+0x42/0x2f0 [ 651.568091][ C1] stack_trace_save+0x11b/0x1e0 [ 651.572934][ C1] ? stack_trace_snprint+0xe0/0xe0 [ 651.578044][ C1] save_stack+0xff/0x200 [ 651.582280][ C1] ? __reset_page_owner+0x1a0/0x1a0 [ 651.587490][ C1] __set_page_owner+0x42/0x2f0 [ 651.592252][ C1] ? post_alloc_hook+0x13d/0x260 [ 651.597578][ C1] get_page_from_freelist+0x729/0x9e0 [ 651.602962][ C1] __alloc_pages+0x255/0x580 [ 651.607548][ C1] ? __rmqueue_pcplist+0x2090/0x2090 [ 651.612827][ C1] ? lockdep_hardirqs_on+0x95/0x140 [ 651.618128][ C1] ? alloc_pages+0x44a/0x560 [ 651.622880][ C1] allocate_slab+0xcc/0x4d0 [ 651.627382][ C1] ___slab_alloc+0x41e/0xc40 [ 651.631970][ C1] ? alloc_buffer_head+0x20/0xf0 [ 651.636936][ C1] ? alloc_buffer_head+0x20/0xf0 [ 651.641866][ C1] kmem_cache_alloc+0x276/0x310 [ 651.646700][ C1] ? alloc_buffer_head+0x20/0xf0 [ 651.651641][ C1] alloc_buffer_head+0x20/0xf0 [ 651.656403][ C1] alloc_page_buffers+0x309/0x5a0 [ 651.661467][ C1] create_empty_buffers+0x36/0x640 [ 651.666577][ C1] ext4_block_write_begin+0x300/0x1840 [ 651.672221][ C1] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 651.678193][ C1] ? asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 651.684350][ C1] ? trace_ext4_da_release_space+0x270/0x270 [ 651.690322][ C1] ? trace_ext4_write_begin+0x290/0x290 [ 651.695885][ C1] ? PageHeadHuge+0x8d/0x100 [ 651.700471][ C1] ext4_da_write_begin+0x58c/0x9b0 [ 651.705705][ C1] ? ext4_set_page_dirty+0x310/0x310 [ 651.710982][ C1] ? balance_dirty_pages_ratelimited+0x824/0xec0 [ 651.717359][ C1] ? fault_in_iov_iter_readable+0x49/0x1d0 [ 651.723212][ C1] generic_perform_write+0x2dd/0x600 [ 651.728523][ C1] ? generic_file_direct_write+0x460/0x460 [ 651.734316][ C1] ? file_remove_privs+0x670/0x670 [ 651.739435][ C1] ext4_buffered_write_iter+0x391/0x520 [ 651.745095][ C1] ext4_file_write_iter+0x8f7/0x1bd0 [ 651.750547][ C1] ? stack_trace_snprint+0xe0/0xe0 [ 651.755741][ C1] ? ____kasan_kmalloc+0xf8/0x110 [ 651.760790][ C1] ? ____kasan_kmalloc+0xdc/0x110 [ 651.765800][ C1] ? __kmalloc+0x253/0x380 [ 651.770205][ C1] ? kmalloc_array+0x2d/0x40 [ 651.774815][ C1] ? ext4_file_read_iter+0x6c0/0x6c0 [ 651.780095][ C1] ? do_sendfile+0x6fe/0x1040 [ 651.784819][ C1] ? __se_sys_sendfile64+0x171/0x1d0 [ 651.790133][ C1] ? do_syscall_64+0x44/0xd0 [ 651.794776][ C1] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 651.800879][ C1] do_iter_readv_writev+0x54f/0x740 [ 651.806088][ C1] ? generic_file_rw_checks+0x260/0x260 [ 651.811644][ C1] ? iov_iter_bvec+0x10b/0x220 [ 651.816412][ C1] ? bpf_lsm_file_permission+0x5/0x10 [ 651.821948][ C1] ? security_file_permission+0xe0/0x5d0 [ 651.827646][ C1] ? do_iter_write+0x174/0x7b0 [ 651.832423][ C1] do_iter_write+0x21e/0x7b0 [ 651.837017][ C1] ? page_cache_pipe_buf_confirm+0x1a3/0x320 [ 651.843079][ C1] ? vfs_iter_write+0x69/0xa0 [ 651.847757][ C1] iter_file_splice_write+0x7eb/0xfa0 [ 651.853146][ C1] ? splice_from_pipe+0x210/0x210 [ 651.858166][ C1] ? generic_file_splice_read+0x529/0x760 [ 651.863883][ C1] ? splice_shrink_spd+0xb0/0xb0 [ 651.868851][ C1] ? lockdep_hardirqs_on+0x95/0x140 [ 651.874051][ C1] ? splice_from_pipe+0x210/0x210 [ 651.879071][ C1] direct_splice_actor+0xe6/0x1c0 [ 651.884092][ C1] splice_direct_to_actor+0x529/0xd00 [ 651.889459][ C1] ? do_splice_direct+0x3e0/0x3e0 [ 651.894478][ C1] ? pipe_to_sendpage+0x340/0x340 [ 651.899510][ C1] ? __sanitizer_cov_trace_pc+0xd/0x60 [ 651.905013][ C1] ? bpf_lsm_file_permission+0x5/0x10 [ 651.910374][ C1] ? security_file_permission+0xe0/0x5d0 [ 651.916004][ C1] do_splice_direct+0x291/0x3e0 [ 651.920847][ C1] ? splice_direct_to_actor+0xd00/0xd00 [ 651.926391][ C1] ? file_start_write+0x166/0x230 [ 651.931409][ C1] do_sendfile+0x6fe/0x1040 [ 651.935911][ C1] ? do_pwritev+0x370/0x370 [ 651.940413][ C1] ? asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 651.946642][ C1] ? lockdep_hardirqs_on+0x95/0x140 [ 651.951839][ C1] __se_sys_sendfile64+0x171/0x1d0 [ 651.957044][ C1] ? __x64_sys_sendfile64+0xa0/0xa0 [ 651.962231][ C1] ? syscall_enter_from_user_mode+0x38/0x1b0 [ 651.968219][ C1] ? syscall_enter_from_user_mode+0x2e/0x1b0 [ 651.974190][ C1] do_syscall_64+0x44/0xd0 [ 651.978595][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 651.984473][ C1] RIP: 0033:0x7f364932b0a9 [ 651.988875][ C1] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 14 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 c0 ff ff ff f7 d8 64 89 01 48 [ 652.008551][ C1] RSP: 002b:00007ffd55ee2f98 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 [ 652.016951][ C1] RAX: ffffffffffffffda RBX: 00000000000f4240 RCX: 00007f364932b0a9 [ 652.024907][ C1] RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000004 [ 652.032873][ C1] RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001 [ 652.040935][ C1] R10: 00008400fffffffa R11: 0000000000000246 R12: 00007f36492ee880 [ 652.048891][ C1] R13: 0000000000000000 R14: 00007ffd55ee2fc0 R15: 00007ffd55ee2fb0 [ 652.056863][ C1] [ 652.059910][ C1] sched: RT throttling activated [ 652.068303][ T26] audit: type=1804 audit(1640319615.723:11): pid=3644 uid=0 auid=4294967295 ses=4294967295 subj=_ op=invalid_pcr cause=ToMToU comm="syz-executor587" name="/root/bus" dev="sda1" ino=1137 res=1 errno=0 [ 652.087823][ T26] audit: type=1804 audit(1640319615.733:12): pid=3644 uid=0 auid=4294967295 ses=4294967295 subj=_ op=invalid_pcr cause=open_writers comm="syz-executor587" name="/root/bus" dev="sda1" ino=1137 res=1 errno=0 [ 652.107819][ T26] audit: type=1804 audit(1640319615.763:13): pid=3648 uid=0 auid=4294967295 ses=4294967295 subj=_ op=invalid_pcr cause=ToMToU comm="syz-executor587" name="/root/bus" dev="sda1" ino=1137 res=1 errno=0 [ 652.127291][ T26] audit: type=1804 audit(1640319615.823:14): pid=3645 uid=0 auid=4294967295 ses=4294967295 subj=_ op=invalid_pcr cause=ToMToU comm="syz-executor587" name="/root/bus" dev="sda1" ino=1137 res=1 errno=0 executing program [ 652.146756][ T26] audit: type=1804 audit(1640319615.873:15): pid=3647 uid=0 auid=4294967295 ses=4294967295 subj=_ op=invalid_pcr cause=ToMToU comm="syz-executor587" name="/root/bus" dev="sda1" ino=1137 res=1 errno=0 [ 652.166271][ T26] audit: type=1804 audit(1640319615.893:16): pid=3645 uid=0 auid=4294967295 ses=4294967295 subj=_ op=invalid_pcr cause=ToMToU comm="syz-executor587" name="/root/bus" dev="sda1" ino=1137 res=1 errno=0 executing program [ 652.185762][ T26] audit: type=1804 audit(1640319615.913:17): pid=3647 uid=0 auid=4294967295 ses=4294967295 subj=_ op=invalid_pcr cause=ToMToU comm="syz-executor587" name="/root/bus" dev="sda1" ino=1137 res=1 errno=0 [ 652.217862][ T26] audit: type=1804 audit(1640319615.923:18): pid=3645 uid=0 auid=4294967295 ses=4294967295 subj=_ op=invalid_pcr cause=open_writers comm="syz-executor587" name="/root/bus" dev="sda1" ino=1137 res=1 errno=0 [ 652.270119][ T26] audit: type=1804 audit(1640319615.943:19): pid=3647 uid=0 auid=4294967295 ses=4294967295 subj=_ op=invalid_pcr cause=open_writers comm="syz-executor587" name="/root/bus" dev="sda1" ino=1137 res=1 errno=0 [ 652.290714][ T26] audit: type=1804 audit(1640319615.963:20): pid=3646 uid=0 auid=4294967295 ses=4294967295 subj=_ op=invalid_pcr cause=ToMToU comm="syz-executor587" name="/root/bus" dev="sda1" ino=1137 res=1 errno=0 executing program executing program executing program executing program