[info] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd[ 14.244305][ C1] random: crng init done [?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.228' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 409.909152][ T94] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 409.999157][ T94] usb 1-1: Using ep0 maxpacket: 32 [ 410.119092][ T94] usb 1-1: config 0 has an invalid interface number: 1 but max is 0 [ 410.127211][ T94] usb 1-1: config 0 has no interface number 0 [ 410.133486][ T94] usb 1-1: New USB device found, idVendor=0e41, idProduct=5051, bcdDevice=d5.e8 [ 410.142528][ T94] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 410.155929][ T94] usb 1-1: config 0 descriptor?? [ 410.205803][ T94] snd_usb_pod 1-1:0.1: Line 6 Pocket POD found [ 410.409194][ T94] snd_usb_pod 1-1:0.1: set_interface failed [ 410.415359][ T94] snd_usb_pod 1-1:0.1: Line 6 Pocket POD now disconnected [ 410.422845][ T94] snd_usb_pod: probe of 1-1:0.1 failed with error -71 [ 410.431258][ T94] usb 1-1: USB disconnect, device number 2 [ 410.999033][ T94] usb 1-1: new high-speed USB device number 3 using dummy_hcd [ 411.089163][ T94] usb 1-1: Using ep0 maxpacket: 32 [ 411.209160][ T94] usb 1-1: config 0 has an invalid interface number: 1 but max is 0 [ 411.217129][ T94] usb 1-1: config 0 has no interface number 0 [ 411.223396][ T94] usb 1-1: New USB device found, idVendor=0e41, idProduct=5051, bcdDevice=d5.e8 [ 411.232463][ T94] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 411.241930][ T94] usb 1-1: config 0 descriptor?? [ 411.281353][ T94] snd_usb_pod 1-1:0.1: Line 6 Pocket POD found [ 411.489851][ T94] snd_usb_pod 1-1:0.1: Line 6 Pocket POD now attached [ 412.146550][ T1800] udc-core: couldn't find an available UDC or it's busy [ 412.153658][ T1800] misc raw-gadget: fail, usb_gadget_probe_driver returned -16 [ 412.163072][ T95] usb 1-1: USB disconnect, device number 3 [ 562.423979][ C1] watchdog: BUG: soft lockup - CPU#1 stuck for 123s! [syz-executor256:1800] [ 562.432827][ C1] Modules linked in: [ 562.436706][ C1] irq event stamp: 150374 [ 562.441102][ C1] hardirqs last enabled at (150373): [] trace_hardirqs_on_thunk+0x1a/0x1c [ 562.451237][ C1] hardirqs last disabled at (150374): [] trace_hardirqs_off_thunk+0x1a/0x1c [ 562.461651][ C1] softirqs last enabled at (150372): [] __do_softirq+0x673/0x950 [ 562.471044][ C1] softirqs last disabled at (150365): [] irq_exit+0x178/0x1a0 [ 562.481077][ C1] CPU: 1 PID: 1800 Comm: syz-executor256 Not tainted 5.6.0-rc3-syzkaller #0 [ 562.489748][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 562.499914][ C1] RIP: 0010:write_comp_data+0x9/0x70 [ 562.505199][ C1] Code: 80 b4 12 00 00 48 8b 11 48 83 c2 01 48 39 d0 76 07 48 89 34 d1 48 89 11 c3 0f 1f 84 00 00 00 00 00 65 4c 8b 04 25 00 0f 02 00 <65> 8b 05 78 b1 c2 7e a9 00 01 1f 00 75 51 41 8b 80 b0 12 00 00 83 [ 562.524799][ C1] RSP: 0018:ffff8881cdbdf7b8 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13 [ 562.533205][ C1] RAX: ffff8881cdbc6200 RBX: 0000000000000001 RCX: ffffffff8134f89f [ 562.541172][ C1] RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000005 [ 562.549148][ C1] RBP: ffff8881cdbdf898 R08: ffff8881cdbc6200 R09: 0000000000000000 [ 562.557119][ C1] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 562.565079][ C1] R13: 0000000000000001 R14: ffff8881ce9f6dc0 R15: ffff8881db333dc0 [ 562.573049][ C1] FS: 0000000000000000(0000) GS:ffff8881db300000(0000) knlGS:0000000000000000 [ 562.581982][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 562.588560][ C1] CR2: 00007f9000514000 CR3: 0000000007021000 CR4: 00000000001406e0 [ 562.596533][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 562.604502][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 562.612478][ C1] Call Trace: [ 562.615839][ C1] smp_call_function_single+0x2df/0x3a0 [ 562.621441][ C1] ? flush_tlb_func_common.constprop.0+0x8a0/0x8a0 [ 562.627936][ C1] ? generic_exec_single+0x370/0x370 [ 562.633229][ C1] ? flush_tlb_func_common.constprop.0+0x8a0/0x8a0 [ 562.639793][ C1] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 562.645681][ C1] smp_call_function_many_cond+0x25e/0x900 [ 562.651499][ C1] ? flush_tlb_func_common.constprop.0+0x8a0/0x8a0 [ 562.657992][ C1] ? native_flush_tlb_others+0x3c9/0x4b0 [ 562.663630][ C1] flush_tlb_mm_range+0x1e8/0x3e0 [ 562.668692][ C1] tlb_flush_mmu+0x274/0x630 [ 562.673325][ C1] tlb_finish_mmu+0x93/0x420 [ 562.677924][ C1] exit_mmap+0x298/0x4d0 [ 562.682165][ C1] ? __ia32_sys_munmap+0x80/0x80 [ 562.687091][ C1] mmput+0xce/0x3d0 [ 562.690888][ C1] do_exit+0xaa0/0x2c50 [ 562.695070][ C1] ? find_held_lock+0x2d/0x110 [ 562.699836][ C1] ? mm_update_next_owner+0x7a0/0x7a0 [ 562.705211][ C1] ? lock_downgrade+0x6e0/0x6e0 [ 562.710058][ C1] do_group_exit+0x125/0x340 [ 562.714660][ C1] get_signal+0x480/0x2470 [ 562.719122][ C1] do_signal+0x88/0x1490 [ 562.723358][ C1] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 562.729155][ C1] ? lockdep_hardirqs_on+0x382/0x580 [ 562.734450][ C1] ? setup_sigcontext+0x820/0x820 [ 562.739537][ C1] ? raw_ioctl+0x193/0x1a70 [ 562.744088][ C1] ? ksys_dup3+0x3c0/0x3c0 [ 562.748496][ C1] ? raw_open+0x470/0x470 [ 562.752838][ C1] exit_to_usermode_loop+0x1a2/0x200 [ 562.758122][ C1] do_syscall_64+0x4e0/0x5a0 [ 562.762767][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 562.768647][ C1] RIP: 0033:0x44a017 [ 562.772569][ C1] Code: Bad RIP value. [ 562.776623][ C1] RSP: 002b:00007f06d7bb1cf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 562.785022][ C1] RAX: fffffffffffffffc RBX: 0000000000000004 RCX: 000000000044a017 [ 562.793002][ C1] RDX: 00007f06d7bb2d20 RSI: 0000000080085502 RDI: 0000000000000004 [ 562.800966][ C1] RBP: 0000000000000000 R08: 0000000000000000 R09: 000000000000000b [ 562.808981][ C1] R10: 0000000000000011 R11: 0000000000000246 R12: 00007f06d7bb1d18 [ 562.816969][ C1] R13: 00007f06d7bb2d28 R14: 0000000000000036 R15: 00000000000000e7 [ 562.824943][ C1] Sending NMI from CPU 1 to CPUs 0: [ 562.831165][ C1] NMI backtrace for cpu 0 [ 562.831171][ C1] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.6.0-rc3-syzkaller #0 [ 562.831177][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 562.831180][ C1] RIP: 0010:memcmp+0x49/0xb0 [ 562.831191][ C1] Code: 0d 48 83 c3 01 48 83 c6 01 49 39 dc 74 45 48 89 d8 48 89 da 48 c1 e8 03 83 e2 07 0f b6 04 28 38 d0 7f 04 84 c0 75 54 48 89 f2 <48> 89 f1 0f b6 03 48 c1 ea 03 83 e1 07 0f b6 14 2a 38 ca 7f 04 84 [ 562.831194][ C1] RSP: 0018:ffff8881db2099f0 EFLAGS: 00000046 [ 562.831202][ C1] RAX: 0000000000000000 RBX: ffff8881d6386200 RCX: ffffffff84b9cb64 [ 562.831207][ C1] RDX: ffffffff868f1e60 RSI: ffffffff868f1e60 RDI: ffff8881d6386200 [ 562.831212][ C1] RBP: dffffc0000000000 R08: ffffffff8702cc40 R09: ffffed103ac70c41 [ 562.831217][ C1] R10: ffffed103ac70c40 R11: ffff8881d6386200 R12: ffff8881d6386205 [ 562.831222][ C1] R13: dffffc0000000000 R14: ffffed1039e3e9c5 R15: 0000000000000001 [ 562.831227][ C1] FS: 0000000000000000(0000) GS:ffff8881db200000(0000) knlGS:0000000000000000 [ 562.831231][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 562.831236][ C1] CR2: 00007f9000514000 CR3: 00000001c7266000 CR4: 00000000001406f0 [ 562.831239][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 562.831246][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 562.831248][ C1] Call Trace: [ 562.831250][ C1] [ 562.831254][ C1] line6_pod_process_message+0x49/0x5b0 [ 562.831258][ C1] ? line6_midi_receive+0x14/0x83 [ 562.831261][ C1] line6_data_received+0x39b/0x520 [ 562.831265][ C1] ? device_id_show+0x80/0x80 [ 562.831268][ C1] __usb_hcd_giveback_urb+0x1f2/0x470 [ 562.831272][ C1] usb_hcd_giveback_urb+0x368/0x420 [ 562.831275][ C1] dummy_timer+0x1258/0x32ae [ 562.831279][ C1] ? dummy_udc_probe+0x930/0x930 [ 562.831283][ C1] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 562.831286][ C1] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 562.831290][ C1] call_timer_fn+0x195/0x6f0 [ 562.831293][ C1] ? dummy_udc_probe+0x930/0x930 [ 562.831297][ C1] ? msleep_interruptible+0x130/0x130 [ 562.831301][ C1] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 562.831304][ C1] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 562.831308][ C1] ? _raw_spin_unlock_irq+0x1f/0x30 [ 562.831312][ C1] ? dummy_udc_probe+0x930/0x930 [ 562.831315][ C1] run_timer_softirq+0x5f9/0x1500 [ 562.831318][ C1] ? add_timer+0x7a0/0x7a0 [ 562.831322][ C1] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 562.831326][ C1] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 562.831329][ C1] __do_softirq+0x21e/0x950 [ 562.831332][ C1] irq_exit+0x178/0x1a0 [ 562.831336][ C1] smp_apic_timer_interrupt+0x141/0x540 [ 562.831340][ C1] apic_timer_interrupt+0xf/0x20 [ 562.831342][ C1] [ 562.831346][ C1] RIP: 0010:default_idle+0x28/0x300 [ 562.831356][ C1] Code: cc cc 41 56 41 55 65 44 8b 2d 94 c9 72 7a 41 54 55 53 0f 1f 44 00 00 e8 16 bb b5 fb e9 07 00 00 00 0f 00 2d 3a 5f 53 00 fb f4 <65> 44 8b 2d 70 c9 72 7a 0f 1f 44 00 00 5b 5d 41 5c 41 5d 41 5e c3 [ 562.831360][ C1] RSP: 0018:ffffffff87007d80 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 562.831368][ C1] RAX: 0000000000000007 RBX: ffffffff8702cc40 RCX: 0000000000000000 [ 562.831373][ C1] RDX: 0000000000000000 RSI: 0000000000000006 RDI: ffffffff8702d48c [ 562.831378][ C1] RBP: fffffbfff0e05988 R08: ffffffff8702cc40 R09: 0000000000000000 [ 562.831383][ C1] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 562.831388][ C1] R13: 0000000000000000 R14: ffffffff87e60000 R15: 0000000000000000 [ 562.831391][ C1] do_idle+0x3e0/0x500 [ 562.831394][ C1] ? arch_cpu_idle_exit+0x40/0x40 [ 562.831398][ C1] ? schedule+0xe1/0x2b0 [ 562.831401][ C1] cpu_startup_entry+0x14/0x20 [ 562.831404][ C1] start_kernel+0xde3/0xe27 [ 562.831408][ C1] ? mem_encrypt_init+0x5/0x5 [ 562.831411][ C1] ? x86_family+0x3d/0x50 [ 562.831414][ C1] ? load_ucode_bsp+0x23d/0x27d [ 562.831418][ C1] secondary_startup_64+0xb6/0xc0 [ 562.831427][ C1] Kernel panic - not syncing: softlockup: hung tasks [ 563.219716][ C1] CPU: 1 PID: 1800 Comm: syz-executor256 Tainted: G L 5.6.0-rc3-syzkaller #0 [ 563.229780][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 563.239834][ C1] Call Trace: [ 563.243107][ C1] [ 563.245971][ C1] dump_stack+0xef/0x16e [ 563.250222][ C1] panic+0x2aa/0x6e1 [ 563.254103][ C1] ? add_taint.cold+0x16/0x16 [ 563.258808][ C1] ? cpumask_next+0x3c/0x40 [ 563.263354][ C1] ? printk_safe_flush+0xd9/0x120 [ 563.268401][ C1] ? watchdog_timer_fn.cold+0xee/0x134 [ 563.273849][ C1] ? watchdog_timer_fn.cold+0xe5/0x134 [ 563.279297][ C1] watchdog_timer_fn.cold+0xff/0x134 [ 563.284587][ C1] __hrtimer_run_queues+0x32c/0xd20 [ 563.289808][ C1] ? lockup_detector_update_enable+0x90/0x90 [ 563.295792][ C1] ? hrtimer_init+0x2e0/0x2e0 [ 563.300505][ C1] ? ktime_get_update_offsets_now+0x24c/0x320 [ 563.306572][ C1] hrtimer_interrupt+0x2e8/0x730 [ 563.311503][ C1] smp_apic_timer_interrupt+0xfe/0x540 [ 563.316952][ C1] apic_timer_interrupt+0xf/0x20 [ 563.321872][ C1] [ 563.324798][ C1] RIP: 0010:write_comp_data+0x9/0x70 [ 563.330081][ C1] Code: 80 b4 12 00 00 48 8b 11 48 83 c2 01 48 39 d0 76 07 48 89 34 d1 48 89 11 c3 0f 1f 84 00 00 00 00 00 65 4c 8b 04 25 00 0f 02 00 <65> 8b 05 78 b1 c2 7e a9 00 01 1f 00 75 51 41 8b 80 b0 12 00 00 83 [ 563.349694][ C1] RSP: 0018:ffff8881cdbdf7b8 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13 [ 563.358089][ C1] RAX: ffff8881cdbc6200 RBX: 0000000000000001 RCX: ffffffff8134f89f [ 563.366066][ C1] RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000005 [ 563.374026][ C1] RBP: ffff8881cdbdf898 R08: ffff8881cdbc6200 R09: 0000000000000000 [ 563.381989][ C1] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 563.389944][ C1] R13: 0000000000000001 R14: ffff8881ce9f6dc0 R15: ffff8881db333dc0 [ 563.397915][ C1] ? smp_call_function_single+0x2df/0x3a0 [ 563.403636][ C1] smp_call_function_single+0x2df/0x3a0 [ 563.409186][ C1] ? flush_tlb_func_common.constprop.0+0x8a0/0x8a0 [ 563.415672][ C1] ? generic_exec_single+0x370/0x370 [ 563.420968][ C1] ? flush_tlb_func_common.constprop.0+0x8a0/0x8a0 [ 563.427458][ C1] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 563.433371][ C1] smp_call_function_many_cond+0x25e/0x900 [ 563.439167][ C1] ? flush_tlb_func_common.constprop.0+0x8a0/0x8a0 [ 563.445652][ C1] ? native_flush_tlb_others+0x3c9/0x4b0 [ 563.451323][ C1] flush_tlb_mm_range+0x1e8/0x3e0 [ 563.456363][ C1] tlb_flush_mmu+0x274/0x630 [ 563.461081][ C1] tlb_finish_mmu+0x93/0x420 [ 563.465688][ C1] exit_mmap+0x298/0x4d0 [ 563.469933][ C1] ? __ia32_sys_munmap+0x80/0x80 [ 563.474866][ C1] mmput+0xce/0x3d0 [ 563.478664][ C1] do_exit+0xaa0/0x2c50 [ 563.482809][ C1] ? find_held_lock+0x2d/0x110 [ 563.487563][ C1] ? mm_update_next_owner+0x7a0/0x7a0 [ 563.492927][ C1] ? lock_downgrade+0x6e0/0x6e0 [ 563.497781][ C1] do_group_exit+0x125/0x340 [ 563.502371][ C1] get_signal+0x480/0x2470 [ 563.506789][ C1] do_signal+0x88/0x1490 [ 563.511023][ C1] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 563.516820][ C1] ? lockdep_hardirqs_on+0x382/0x580 [ 563.522101][ C1] ? setup_sigcontext+0x820/0x820 [ 563.527134][ C1] ? raw_ioctl+0x193/0x1a70 [ 563.531632][ C1] ? ksys_dup3+0x3c0/0x3c0 [ 563.536063][ C1] ? raw_open+0x470/0x470 [ 563.540397][ C1] exit_to_usermode_loop+0x1a2/0x200 [ 563.545668][ C1] do_syscall_64+0x4e0/0x5a0 [ 563.550259][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 563.556143][ C1] RIP: 0033:0x44a017 [ 563.560112][ C1] Code: Bad RIP value. [ 563.564166][ C1] RSP: 002b:00007f06d7bb1cf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 563.572563][ C1] RAX: fffffffffffffffc RBX: 0000000000000004 RCX: 000000000044a017 [ 563.580527][ C1] RDX: 00007f06d7bb2d20 RSI: 0000000080085502 RDI: 0000000000000004 [ 563.588485][ C1] RBP: 0000000000000000 R08: 0000000000000000 R09: 000000000000000b [ 563.596453][ C1] R10: 0000000000000011 R11: 0000000000000246 R12: 00007f06d7bb1d18 [ 563.604417][ C1] R13: 00007f06d7bb2d28 R14: 0000000000000036 R15: 00000000000000e7 [ 564.739232][ C1] Shutting down cpus with NMI [ 564.744387][ C1] Kernel Offset: disabled [ 564.748835][ C1] Rebooting in 86400 seconds..