[ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.164' (ECDSA) to the list of known hosts. 2021/09/28 13:14:46 fuzzer started 2021/09/28 13:14:46 connecting to host at 10.128.0.169:44221 2021/09/28 13:14:46 checking machine... 2021/09/28 13:14:46 checking revisions... 2021/09/28 13:14:46 testing simple program... syzkaller login: [ 69.393209][ T6569] chnl_net:caif_netlink_parms(): no params data found [ 69.464103][ T6569] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.472447][ T6569] bridge0: port 1(bridge_slave_0) entered disabled state [ 69.480410][ T6569] device bridge_slave_0 entered promiscuous mode [ 69.491020][ T6569] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.498145][ T6569] bridge0: port 2(bridge_slave_1) entered disabled state [ 69.506634][ T6569] device bridge_slave_1 entered promiscuous mode [ 69.538416][ T6569] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 69.549575][ T6569] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 69.585198][ T6569] team0: Port device team_slave_0 added [ 69.594265][ T6569] team0: Port device team_slave_1 added [ 69.624993][ T6569] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 69.633696][ T6569] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 69.661465][ T6569] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 69.675456][ T6569] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 69.682888][ T6569] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 69.710527][ T6569] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 69.748664][ T6569] device hsr_slave_0 entered promiscuous mode [ 69.755573][ T6569] device hsr_slave_1 entered promiscuous mode [ 69.843630][ T6569] ------------[ cut here ]------------ [ 69.849307][ T6569] WARNING: CPU: 0 PID: 6569 at net/core/devlink.c:5158 devlink_nl_region_notify+0x184/0x1e0 [ 69.862024][ T6569] Modules linked in: [ 69.865956][ T6569] CPU: 0 PID: 6569 Comm: syz-executor.0 Not tainted 5.15.0-rc2-syzkaller #0 [ 69.875104][ T6569] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 69.886241][ T6569] RIP: 0010:devlink_nl_region_notify+0x184/0x1e0 [ 69.893429][ T6569] Code: 38 41 b8 c0 0c 00 00 31 d2 48 89 ee 4c 89 e7 e8 72 1a 26 00 48 83 c4 08 5b 5d 41 5c 41 5d 41 5e e9 01 bd 41 fa e8 fc bc 41 fa <0f> 0b e9 f7 fe ff ff e8 f0 bc 41 fa 0f 0b eb da 4c 89 e7 e8 c4 18 [ 69.913730][ T6569] RSP: 0018:ffffc90002c4f658 EFLAGS: 00010293 [ 69.920177][ T6569] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 69.929327][ T6569] RDX: ffff88802178b900 RSI: ffffffff87344e94 RDI: 0000000000000003 [ 69.938022][ T6569] RBP: ffff888072d8d980 R08: 0000000000000000 R09: 0000000000000000 [ 69.946520][ T6569] R10: ffffffff87344d8a R11: 0000000000000000 R12: ffff88807199c000 [ 69.954766][ T6569] R13: 0000000000000000 R14: 000000000000002c R15: ffff88807199c070 [ 69.962857][ T6569] FS: 000055555659f400(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 69.972092][ T6569] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 69.978787][ T6569] CR2: 00007f1bdcb2b000 CR3: 000000006872d000 CR4: 00000000003506f0 [ 69.986890][ T6569] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 69.995278][ T6569] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 70.003335][ T6569] Call Trace: [ 70.006619][ T6569] devlink_region_create+0x39f/0x4c0 [ 70.011981][ T6569] nsim_dev_probe+0x5f6/0x1150 [ 70.016760][ T6569] ? nsim_esw_legacy_enable+0x1b0/0x1b0 [ 70.022456][ T6569] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 70.028729][ T6569] ? kernfs_create_link+0x1b3/0x230 [ 70.034668][ T6569] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 70.041141][ T6569] ? kernfs_put+0x31/0x50 [ 70.045903][ T6569] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 70.053257][ T6569] ? sysfs_do_create_link_sd+0xbb/0x140 [ 70.058831][ T6569] ? sysfs_create_link+0x67/0xc0 [ 70.064847][ T6569] ? nsim_bus_remove+0x20/0x20 [ 70.069627][ T6569] really_probe+0x245/0xcc0 [ 70.074358][ T6569] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 70.080665][ T6569] __driver_probe_device+0x338/0x4d0 [ 70.087050][ T6569] driver_probe_device+0x4c/0x1a0 [ 70.093021][ T6569] __device_attach_driver+0x20b/0x2f0 [ 70.098712][ T6569] ? driver_allows_async_probing+0x150/0x150 [ 70.106059][ T6569] bus_for_each_drv+0x15f/0x1e0 [ 70.111228][ T6569] ? bus_for_each_dev+0x1d0/0x1d0 [ 70.116305][ T6569] ? rcu_read_lock_sched_held+0x3a/0x70 [ 70.123021][ T6569] __device_attach+0x228/0x4a0 [ 70.127817][ T6569] ? device_driver_attach+0x210/0x210 [ 70.133478][ T6569] ? kobject_uevent_env+0x2bb/0x1650 [ 70.138928][ T6569] bus_probe_device+0x1e4/0x290 [ 70.144764][ T6569] device_add+0xc35/0x21b0 [ 70.149226][ T6569] ? lockdep_init_map_type+0x2c3/0x7b0 [ 70.155314][ T6569] ? lockdep_init_map_type+0x2c3/0x7b0 [ 70.161486][ T6569] ? __fw_devlink_link_to_suppliers+0x5e0/0x5e0 [ 70.167958][ T6569] ? __raw_spin_lock_init+0x36/0x110 [ 70.173414][ T6569] new_device_store+0x48b/0x770 [ 70.178559][ T6569] ? nsim_bus_dev_numvfs_store+0x3e0/0x3e0 [ 70.185494][ T6569] ? nsim_bus_dev_numvfs_store+0x3e0/0x3e0 [ 70.191574][ T6569] ? sysfs_file_ops+0x1c0/0x1c0 [ 70.196447][ T6569] bus_attr_store+0x72/0xa0 [ 70.201839][ T6569] ? bus_attr_show+0x90/0x90 [ 70.206541][ T6569] sysfs_kf_write+0x110/0x160 [ 70.211439][ T6569] kernfs_fop_write_iter+0x342/0x500 [ 70.216766][ T6569] new_sync_write+0x429/0x660 [ 70.222418][ T6569] ? new_sync_read+0x6e0/0x6e0 [ 70.227224][ T6569] ? lock_release+0x720/0x720 [ 70.232526][ T6569] vfs_write+0x7cf/0xae0 [ 70.236798][ T6569] ksys_write+0x12d/0x250 [ 70.241974][ T6569] ? __ia32_sys_read+0xb0/0xb0 [ 70.246802][ T6569] ? syscall_enter_from_user_mode+0x21/0x70 [ 70.252971][ T6569] do_syscall_64+0x35/0xb0 [ 70.257420][ T6569] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 70.264803][ T6569] RIP: 0033:0x7f5522ee33ef [ 70.269349][ T6569] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 99 fd ff ff 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 cc fd ff ff 48 [ 70.289230][ T6569] RSP: 002b:00007fffb712ab70 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 [ 70.297885][ T6569] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f5522ee33ef [ 70.306056][ T6569] RDX: 0000000000000003 RSI: 00007fffb712abc0 RDI: 0000000000000004 [ 70.314373][ T6569] RBP: 0000000000000004 R08: 0000000000000000 R09: 00007fffb712ab10 [ 70.322431][ T6569] R10: 0000000000000000 R11: 0000000000000293 R12: 00007f5522f8a971 [ 70.330410][ T6569] R13: 00007fffb712abc0 R14: 0000000000000000 R15: 00007fffb712b290 [ 70.338780][ T6569] Kernel panic - not syncing: panic_on_warn set ... [ 70.345625][ T6569] CPU: 0 PID: 6569 Comm: syz-executor.0 Not tainted 5.15.0-rc2-syzkaller #0 [ 70.354308][ T6569] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 70.364384][ T6569] Call Trace: [ 70.367918][ T6569] dump_stack_lvl+0xcd/0x134 [ 70.372509][ T6569] panic+0x2b0/0x6dd [ 70.376424][ T6569] ? __warn_printk+0xf3/0xf3 [ 70.381025][ T6569] ? __warn.cold+0x1a/0x44 [ 70.385628][ T6569] ? devlink_nl_region_notify+0x184/0x1e0 [ 70.391349][ T6569] __warn.cold+0x35/0x44 [ 70.395590][ T6569] ? devlink_nl_region_notify+0x184/0x1e0 [ 70.401483][ T6569] report_bug+0x1bd/0x210 [ 70.405910][ T6569] handle_bug+0x3c/0x60 [ 70.410151][ T6569] exc_invalid_op+0x14/0x40 [ 70.414656][ T6569] asm_exc_invalid_op+0x12/0x20 [ 70.419858][ T6569] RIP: 0010:devlink_nl_region_notify+0x184/0x1e0 [ 70.426190][ T6569] Code: 38 41 b8 c0 0c 00 00 31 d2 48 89 ee 4c 89 e7 e8 72 1a 26 00 48 83 c4 08 5b 5d 41 5c 41 5d 41 5e e9 01 bd 41 fa e8 fc bc 41 fa <0f> 0b e9 f7 fe ff ff e8 f0 bc 41 fa 0f 0b eb da 4c 89 e7 e8 c4 18 [ 70.447229][ T6569] RSP: 0018:ffffc90002c4f658 EFLAGS: 00010293 [ 70.453382][ T6569] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 70.461698][ T6569] RDX: ffff88802178b900 RSI: ffffffff87344e94 RDI: 0000000000000003 [ 70.469663][ T6569] RBP: ffff888072d8d980 R08: 0000000000000000 R09: 0000000000000000 [ 70.477719][ T6569] R10: ffffffff87344d8a R11: 0000000000000000 R12: ffff88807199c000 [ 70.485963][ T6569] R13: 0000000000000000 R14: 000000000000002c R15: ffff88807199c070 [ 70.494044][ T6569] ? devlink_nl_region_notify+0x7a/0x1e0 [ 70.499815][ T6569] ? devlink_nl_region_notify+0x184/0x1e0 [ 70.505757][ T6569] ? devlink_nl_region_notify+0x184/0x1e0 [ 70.511576][ T6569] devlink_region_create+0x39f/0x4c0 [ 70.517131][ T6569] nsim_dev_probe+0x5f6/0x1150 [ 70.521990][ T6569] ? nsim_esw_legacy_enable+0x1b0/0x1b0 [ 70.527642][ T6569] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 70.533971][ T6569] ? kernfs_create_link+0x1b3/0x230 [ 70.539271][ T6569] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 70.545618][ T6569] ? kernfs_put+0x31/0x50 [ 70.550042][ T6569] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 70.556298][ T6569] ? sysfs_do_create_link_sd+0xbb/0x140 [ 70.561957][ T6569] ? sysfs_create_link+0x67/0xc0 [ 70.567073][ T6569] ? nsim_bus_remove+0x20/0x20 [ 70.571837][ T6569] really_probe+0x245/0xcc0 [ 70.576339][ T6569] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 70.582590][ T6569] __driver_probe_device+0x338/0x4d0 [ 70.587900][ T6569] driver_probe_device+0x4c/0x1a0 [ 70.592949][ T6569] __device_attach_driver+0x20b/0x2f0 [ 70.598508][ T6569] ? driver_allows_async_probing+0x150/0x150 [ 70.604494][ T6569] bus_for_each_drv+0x15f/0x1e0 [ 70.609365][ T6569] ? bus_for_each_dev+0x1d0/0x1d0 [ 70.614404][ T6569] ? rcu_read_lock_sched_held+0x3a/0x70 [ 70.619977][ T6569] __device_attach+0x228/0x4a0 [ 70.624746][ T6569] ? device_driver_attach+0x210/0x210 [ 70.630549][ T6569] ? kobject_uevent_env+0x2bb/0x1650 [ 70.635838][ T6569] bus_probe_device+0x1e4/0x290 [ 70.640712][ T6569] device_add+0xc35/0x21b0 [ 70.645279][ T6569] ? lockdep_init_map_type+0x2c3/0x7b0 [ 70.650786][ T6569] ? lockdep_init_map_type+0x2c3/0x7b0 [ 70.656445][ T6569] ? __fw_devlink_link_to_suppliers+0x5e0/0x5e0 [ 70.662700][ T6569] ? __raw_spin_lock_init+0x36/0x110 [ 70.668020][ T6569] new_device_store+0x48b/0x770 [ 70.672883][ T6569] ? nsim_bus_dev_numvfs_store+0x3e0/0x3e0 [ 70.678713][ T6569] ? nsim_bus_dev_numvfs_store+0x3e0/0x3e0 [ 70.684538][ T6569] ? sysfs_file_ops+0x1c0/0x1c0 [ 70.689404][ T6569] bus_attr_store+0x72/0xa0 [ 70.693913][ T6569] ? bus_attr_show+0x90/0x90 [ 70.698589][ T6569] sysfs_kf_write+0x110/0x160 [ 70.703285][ T6569] kernfs_fop_write_iter+0x342/0x500 [ 70.708586][ T6569] new_sync_write+0x429/0x660 [ 70.713524][ T6569] ? new_sync_read+0x6e0/0x6e0 [ 70.718297][ T6569] ? lock_release+0x720/0x720 [ 70.723080][ T6569] vfs_write+0x7cf/0xae0 [ 70.727447][ T6569] ksys_write+0x12d/0x250 [ 70.731809][ T6569] ? __ia32_sys_read+0xb0/0xb0 [ 70.736573][ T6569] ? syscall_enter_from_user_mode+0x21/0x70 [ 70.742763][ T6569] do_syscall_64+0x35/0xb0 [ 70.747188][ T6569] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 70.753361][ T6569] RIP: 0033:0x7f5522ee33ef [ 70.757949][ T6569] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 99 fd ff ff 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 cc fd ff ff 48 [ 70.777904][ T6569] RSP: 002b:00007fffb712ab70 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 [ 70.786314][ T6569] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f5522ee33ef [ 70.794368][ T6569] RDX: 0000000000000003 RSI: 00007fffb712abc0 RDI: 0000000000000004 [ 70.802424][ T6569] RBP: 0000000000000004 R08: 0000000000000000 R09: 00007fffb712ab10 [ 70.810573][ T6569] R10: 0000000000000000 R11: 0000000000000293 R12: 00007f5522f8a971 [ 70.819000][ T6569] R13: 00007fffb712abc0 R14: 0000000000000000 R15: 00007fffb712b290 [ 70.827467][ T6569] Kernel Offset: disabled [ 70.831997][ T6569] Rebooting in 86400 seconds..