syzkaller login: [ 36.680171][ T4390] cgroup: Unknown subsys name 'perf_event' [ 36.687917][ T4390] cgroup: Unknown subsys name 'net_cls' [ 41.055118][ T4379] can: request_module (can-proto-0) failed. [ 41.070427][ T4379] can: request_module (can-proto-2) failed. [ 41.084058][ T4379] can: request_module (can-proto-0) failed. [ 41.098190][ T4379] can: request_module (can-proto-7) failed. [ 41.111449][ T4379] can: request_module (can-proto-0) failed. [ 41.123671][ T4379] can: request_module (can-proto-1) failed. [ 41.748516][ T4379] syz-fuzzer (4379) used greatest stack depth: 22408 bytes left Warning: Permanently added '10.128.10.37' (ECDSA) to the list of known hosts. 2021/05/13 06:00:21 parsed 1 programs 2021/05/13 06:00:23 executed programs: 0 [ 51.322911][ T4973] cgroup: Unknown subsys name 'perf_event' [ 51.330151][ T4973] cgroup: Unknown subsys name 'net_cls' [ 51.341214][ T4975] cgroup: Unknown subsys name 'perf_event' [ 51.351995][ T4975] cgroup: Unknown subsys name 'net_cls' [ 51.420908][ T4984] cgroup: Unknown subsys name 'perf_event' [ 51.430874][ T4984] cgroup: Unknown subsys name 'net_cls' [ 51.444081][ T4986] cgroup: Unknown subsys name 'perf_event' [ 51.444305][ T4985] cgroup: Unknown subsys name 'perf_event' [ 51.451121][ T4986] cgroup: Unknown subsys name 'net_cls' [ 51.486293][ T4985] cgroup: Unknown subsys name 'net_cls' [ 51.515461][ T4995] cgroup: Unknown subsys name 'perf_event' [ 51.551522][ T4995] cgroup: Unknown subsys name 'net_cls' [ 64.389094][ T17] usb 3-1: new high-speed USB device number 2 using dummy_hcd [ 64.649292][ T7] usb 2-1: new high-speed USB device number 2 using dummy_hcd [ 64.699093][ T2625] usb 4-1: new high-speed USB device number 2 using dummy_hcd [ 64.749172][ T2211] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 64.758718][ T2645] usb 5-1: new high-speed USB device number 2 using dummy_hcd [ 64.869386][ T7707] usb 6-1: new high-speed USB device number 2 using dummy_hcd [ 64.949103][ T17] usb 3-1: New USB device found, idVendor=045e, idProduct=0927, bcdDevice=89.4f [ 64.960691][ T17] usb 3-1: New USB device strings: Mfr=0, Product=4, SerialNumber=0 [ 64.970863][ T17] usb 3-1: Product: syz [ 64.978608][ T17] usb 3-1: config 0 descriptor?? [ 65.089291][ T7] usb 2-1: New USB device found, idVendor=045e, idProduct=0927, bcdDevice=89.4f [ 65.100624][ T7] usb 2-1: New USB device strings: Mfr=0, Product=4, SerialNumber=0 [ 65.110437][ T7] usb 2-1: Product: syz [ 65.120501][ T7] usb 2-1: config 0 descriptor?? [ 65.149781][ T2625] usb 4-1: New USB device found, idVendor=045e, idProduct=0927, bcdDevice=89.4f [ 65.160716][ T2625] usb 4-1: New USB device strings: Mfr=0, Product=4, SerialNumber=0 [ 65.171159][ T2625] usb 4-1: Product: syz [ 65.187508][ T2625] usb 4-1: config 0 descriptor?? [ 65.259650][ T17] ------------[ cut here ]------------ [ 65.266215][ T17] WARNING: CPU: 1 PID: 17 at drivers/net/usb/r8152.c:8138 rtl8152_probe+0x248/0x3050 [ 65.278039][ T17] Modules linked in: [ 65.282990][ T17] CPU: 1 PID: 17 Comm: kworker/1:0 Not tainted 5.13.0-rc1-syzkaller #0 [ 65.292666][ T17] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 65.305280][ T17] Workqueue: usb_hub_wq hub_event [ 65.311218][ T17] RIP: 0010:rtl8152_probe+0x248/0x3050 [ 65.316891][ T17] Code: c3 a8 02 00 00 89 ee e8 86 5f c5 fd 41 39 ed 0f 85 40 ff ff ff e8 b8 59 c5 fd 44 89 ee 44 89 ef e8 6d 5f c5 fd e8 a8 59 c5 fd <0f> 0b 41 bc ed ff ff ff e8 9b 59 c5 fd 44 89 e0 48 83 c4 40 5b 5d [ 65.342310][ T17] RSP: 0018:ffffc9000012f178 EFLAGS: 00010293 [ 65.349869][ T17] RAX: 0000000000000000 RBX: ffff888119aaf2a8 RCX: 0000000000000000 [ 65.360301][ T17] RDX: ffff888100329b40 RSI: ffffffff837bb678 RDI: 0000000000000003 [ 65.369586][ T17] RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000002 [ 65.378547][ T17] R10: ffffffff837bb673 R11: 00000000ffffffff R12: dffffc0000000000 [ 65.388034][ T17] R13: 0000000000000001 R14: ffff8881102260a8 R15: 0000000000000002 [ 65.397544][ T17] FS: 0000000000000000(0000) GS:ffff8881f6b00000(0000) knlGS:0000000000000000 [ 65.407417][ T17] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 65.415516][ T17] CR2: 00000000005680c0 CR3: 00000001081ba000 CR4: 00000000001506e0 [ 65.425205][ T17] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 65.434403][ T17] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 65.443254][ T17] Call Trace: [ 65.448042][ T17] usb_probe_interface+0x315/0x7f0 [ 65.454740][ T17] ? usb_match_dynamic_id+0x1a0/0x1a0 [ 65.461183][ T17] really_probe+0x291/0xf60 [ 65.466145][ T17] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 65.474103][ T17] driver_probe_device+0x298/0x410 [ 65.480103][ T17] __device_attach_driver+0x203/0x2c0 [ 65.486417][ T17] ? driver_allows_async_probing+0x150/0x150 [ 65.493174][ T17] bus_for_each_drv+0x15f/0x1e0 [ 65.499145][ T17] ? bus_for_each_dev+0x1d0/0x1d0 [ 65.504962][ T17] ? lockdep_hardirqs_on_prepare+0x273/0x3e0 [ 65.513664][ T17] ? trace_hardirqs_on+0x5b/0x1a0 [ 65.524891][ T17] __device_attach+0x228/0x4b0 [ 65.530893][ T17] ? __driver_attach_async_helper+0x330/0x330 [ 65.538460][ T17] ? kobject_uevent_env+0x2bb/0x1650 [ 65.544860][ T17] bus_probe_device+0x1e4/0x290 [ 65.551006][ T17] device_add+0xbe0/0x2100 [ 65.556107][ T17] ? wait_for_completion_io+0x270/0x270 [ 65.563495][ T17] ? __fw_devlink_link_to_suppliers+0x5e0/0x5e0 [ 65.570982][ T17] ? lockdep_hardirqs_on_prepare+0x273/0x3e0 [ 65.579461][ T17] ? _raw_spin_unlock_irqrestore+0x42/0x50 [ 65.586944][ T2625] usb 2-1: USB disconnect, device number 2 [ 65.587315][ T17] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 65.603485][ T17] usb_set_configuration+0x113f/0x1910 [ 65.610253][ T17] usb_generic_driver_probe+0xba/0x100 [ 65.616111][ T17] usb_probe_device+0xd9/0x2c0 [ 65.622271][ T17] ? usb_driver_release_interface+0x180/0x180 [ 65.628648][ T17] really_probe+0x291/0xf60 [ 65.634146][ T17] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 65.642210][ T17] driver_probe_device+0x298/0x410 [ 65.648151][ T17] __device_attach_driver+0x203/0x2c0 [ 65.653516][ T7] usb 4-1: USB disconnect, device number 2 [ 65.653983][ T17] ? driver_allows_async_probing+0x150/0x150 [ 65.667236][ T17] bus_for_each_drv+0x15f/0x1e0 [ 65.672866][ T17] ? bus_for_each_dev+0x1d0/0x1d0 [ 65.678379][ T17] ? lockdep_hardirqs_on_prepare+0x273/0x3e0 [ 65.685014][ T17] ? trace_hardirqs_on+0x5b/0x1a0 [ 65.690629][ T17] __device_attach+0x228/0x4b0 [ 65.696525][ T17] ? __driver_attach_async_helper+0x330/0x330 [ 65.703489][ T17] ? kobject_uevent_env+0x2bb/0x1650 [ 65.709678][ T17] bus_probe_device+0x1e4/0x290 [ 65.715644][ T17] device_add+0xbe0/0x2100 [ 65.720871][ T17] ? __fw_devlink_link_to_suppliers+0x5e0/0x5e0 [ 65.728093][ T17] ? kfree+0xdb/0x3b0 [ 65.732827][ T17] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 65.739686][ T17] usb_new_device.cold+0x721/0x1058 [ 65.745383][ T17] ? hub_disconnect+0x510/0x510 [ 65.752990][ T17] ? rwlock_bug.part.0+0x90/0x90 [ 65.759109][ T17] ? lockdep_hardirqs_on_prepare+0x273/0x3e0 [ 65.765721][ T17] hub_event+0x2357/0x4330 [ 65.771132][ T17] ? hub_port_debounce+0x3c0/0x3c0 [ 65.777237][ T17] ? lock_downgrade+0x431/0x6e0 [ 65.784860][ T17] ? __do_sys_prctl+0xbb0/0xfd0 [ 65.791427][ T17] ? lock_release+0x6f0/0x6f0 [ 65.797089][ T17] ? lock_downgrade+0x6e0/0x6e0 [ 65.803079][ T17] ? do_raw_spin_lock+0x120/0x2b0 [ 65.809542][ T17] process_one_work+0x98d/0x1580 [ 65.816014][ T17] ? pwq_dec_nr_in_flight+0x320/0x320 [ 65.823784][ T17] ? rwlock_bug.part.0+0x90/0x90 [ 65.831674][ T17] worker_thread+0x64c/0x1120 [ 65.837709][ T17] ? process_one_work+0x1580/0x1580 [ 65.843764][ T17] kthread+0x38c/0x460 [ 65.849920][ T17] ? _raw_spin_unlock_irq+0x1f/0x30 [ 65.856572][ T17] ? __kthread_bind_mask+0xc0/0xc0 [ 65.862961][ T17] ret_from_fork+0x1f/0x30 [ 65.869077][ T17] Kernel panic - not syncing: panic_on_warn set ... [ 65.877112][ T17] CPU: 1 PID: 17 Comm: kworker/1:0 Not tainted 5.13.0-rc1-syzkaller #0 [ 65.887971][ T17] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 65.902362][ T17] Workqueue: usb_hub_wq hub_event [ 65.908799][ T17] Call Trace: [ 65.913342][ T17] dump_stack+0x143/0x1db [ 65.919574][ T17] panic+0x306/0x73d [ 65.926697][ T17] ? __warn_printk+0xf3/0xf3 [ 65.933382][ T17] ? __warn.cold+0x1a/0x44 [ 65.940786][ T17] ? rtl8152_probe+0x248/0x3050 [ 65.947154][ T17] __warn.cold+0x35/0x44 [ 65.951593][ T17] ? rtl8152_probe+0x248/0x3050 [ 65.958147][ T17] report_bug+0x1bd/0x210 [ 65.963615][ T17] handle_bug+0x3c/0x60 [ 65.968475][ T17] exc_invalid_op+0x14/0x40 [ 65.973566][ T17] asm_exc_invalid_op+0x12/0x20 [ 65.980366][ T17] RIP: 0010:rtl8152_probe+0x248/0x3050 [ 65.986771][ T17] Code: c3 a8 02 00 00 89 ee e8 86 5f c5 fd 41 39 ed 0f 85 40 ff ff ff e8 b8 59 c5 fd 44 89 ee 44 89 ef e8 6d 5f c5 fd e8 a8 59 c5 fd <0f> 0b 41 bc ed ff ff ff e8 9b 59 c5 fd 44 89 e0 48 83 c4 40 5b 5d [ 66.009122][ T17] RSP: 0018:ffffc9000012f178 EFLAGS: 00010293 [ 66.016481][ T17] RAX: 0000000000000000 RBX: ffff888119aaf2a8 RCX: 0000000000000000 [ 66.027034][ T17] RDX: ffff888100329b40 RSI: ffffffff837bb678 RDI: 0000000000000003 [ 66.037854][ T17] RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000002 [ 66.050568][ T17] R10: ffffffff837bb673 R11: 00000000ffffffff R12: dffffc0000000000 [ 66.060772][ T17] R13: 0000000000000001 R14: ffff8881102260a8 R15: 0000000000000002 [ 66.069771][ T17] ? rtl8152_probe+0x243/0x3050 [ 66.076700][ T17] ? rtl8152_probe+0x248/0x3050 [ 66.083461][ T17] ? rtl8152_probe+0x248/0x3050 [ 66.088436][ T17] usb_probe_interface+0x315/0x7f0 [ 66.093588][ T17] ? usb_match_dynamic_id+0x1a0/0x1a0 [ 66.099345][ T17] really_probe+0x291/0xf60 [ 66.104163][ T17] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 66.111362][ T17] driver_probe_device+0x298/0x410 [ 66.116795][ T17] __device_attach_driver+0x203/0x2c0 [ 66.122987][ T17] ? driver_allows_async_probing+0x150/0x150 [ 66.129253][ T17] bus_for_each_drv+0x15f/0x1e0 [ 66.135559][ T17] ? bus_for_each_dev+0x1d0/0x1d0 [ 66.141738][ T17] ? lockdep_hardirqs_on_prepare+0x273/0x3e0 [ 66.148882][ T17] ? trace_hardirqs_on+0x5b/0x1a0 [ 66.154437][ T17] __device_attach+0x228/0x4b0 [ 66.159881][ T17] ? __driver_attach_async_helper+0x330/0x330 [ 66.166432][ T17] ? kobject_uevent_env+0x2bb/0x1650 [ 66.172115][ T17] bus_probe_device+0x1e4/0x290 [ 66.177443][ T17] device_add+0xbe0/0x2100 [ 66.182234][ T17] ? wait_for_completion_io+0x270/0x270 [ 66.188866][ T17] ? __fw_devlink_link_to_suppliers+0x5e0/0x5e0 [ 66.195716][ T17] ? lockdep_hardirqs_on_prepare+0x273/0x3e0 [ 66.202543][ T17] ? _raw_spin_unlock_irqrestore+0x42/0x50 [ 66.209638][ T17] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 66.216423][ T17] usb_set_configuration+0x113f/0x1910 [ 66.222991][ T17] usb_generic_driver_probe+0xba/0x100 [ 66.229476][ T17] usb_probe_device+0xd9/0x2c0 [ 66.235999][ T17] ? usb_driver_release_interface+0x180/0x180 [ 66.243411][ T17] really_probe+0x291/0xf60 [ 66.248962][ T17] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 66.256421][ T17] driver_probe_device+0x298/0x410 [ 66.262094][ T17] __device_attach_driver+0x203/0x2c0 [ 66.268132][ T17] ? driver_allows_async_probing+0x150/0x150 [ 66.274613][ T17] bus_for_each_drv+0x15f/0x1e0 [ 66.280250][ T17] ? bus_for_each_dev+0x1d0/0x1d0 [ 66.285511][ T17] ? lockdep_hardirqs_on_prepare+0x273/0x3e0 [ 66.294853][ T17] ? trace_hardirqs_on+0x5b/0x1a0 [ 66.301039][ T17] __device_attach+0x228/0x4b0 [ 66.306895][ T17] ? __driver_attach_async_helper+0x330/0x330 [ 66.315310][ T17] ? kobject_uevent_env+0x2bb/0x1650 [ 66.321858][ T17] bus_probe_device+0x1e4/0x290 [ 66.327231][ T17] device_add+0xbe0/0x2100 [ 66.332528][ T17] ? __fw_devlink_link_to_suppliers+0x5e0/0x5e0 [ 66.339340][ T17] ? kfree+0xdb/0x3b0 [ 66.343431][ T17] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 66.349463][ T7] usb 2-1: new high-speed USB device number 3 using dummy_hcd [ 66.352724][ T17] usb_new_device.cold+0x721/0x1058 [ 66.368980][ T17] ? hub_disconnect+0x510/0x510 [ 66.374815][ T17] ? rwlock_bug.part.0+0x90/0x90 [ 66.380158][ T17] ? lockdep_hardirqs_on_prepare+0x273/0x3e0 [ 66.387848][ T17] hub_event+0x2357/0x4330 [ 66.392395][ T17] ? hub_port_debounce+0x3c0/0x3c0 [ 66.398863][ T17] ? lock_downgrade+0x431/0x6e0 [ 66.405720][ T17] ? __do_sys_prctl+0xbb0/0xfd0 [ 66.412155][ T17] ? lock_release+0x6f0/0x6f0 [ 66.418128][ T17] ? lock_downgrade+0x6e0/0x6e0 [ 66.418995][ T2625] usb 4-1: new high-speed USB device number 3 using dummy_hcd [ 66.424820][ T17] ? do_raw_spin_lock+0x120/0x2b0 [ 66.439523][ T17] process_one_work+0x98d/0x1580 [ 66.445354][ T17] ? pwq_dec_nr_in_flight+0x320/0x320 [ 66.452289][ T17] ? rwlock_bug.part.0+0x90/0x90 [ 66.458185][ T17] worker_thread+0x64c/0x1120 [ 66.463821][ T17] ? process_one_work+0x1580/0x1580 [ 66.470684][ T17] kthread+0x38c/0x460 [ 66.476033][ T17] ? _raw_spin_unlock_irq+0x1f/0x30 [ 66.482102][ T17] ? __kthread_bind_mask+0xc0/0xc0 [ 66.488144][ T17] ret_from_fork+0x1f/0x30 [ 66.495525][ T17] Kernel Offset: disabled [ 66.501353][ T17] Rebooting in 86400 seconds..