[ 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 '10.128.0.207' (ECDSA) to the list of known hosts. 2021/09/29 01:07:31 fuzzer started 2021/09/29 01:07:32 connecting to host at 10.128.0.169:43489 2021/09/29 01:07:32 checking machine... 2021/09/29 01:07:32 checking revisions... 2021/09/29 01:07:32 testing simple program... syzkaller login: [ 71.274576][ T6549] chnl_net:caif_netlink_parms(): no params data found [ 71.350617][ T6549] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.363595][ T6549] bridge0: port 1(bridge_slave_0) entered disabled state [ 71.371688][ T6549] device bridge_slave_0 entered promiscuous mode [ 71.381639][ T6549] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.389046][ T6549] bridge0: port 2(bridge_slave_1) entered disabled state [ 71.397800][ T6549] device bridge_slave_1 entered promiscuous mode [ 71.431548][ T6549] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 71.443231][ T6549] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 71.478325][ T6549] team0: Port device team_slave_0 added [ 71.487227][ T6549] team0: Port device team_slave_1 added [ 71.515416][ T6549] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 71.522384][ T6549] 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. [ 71.549785][ T6549] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 71.562776][ T6549] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 71.572891][ T6549] 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. [ 71.601189][ T6549] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 71.638773][ T6549] device hsr_slave_0 entered promiscuous mode [ 71.646709][ T6549] device hsr_slave_1 entered promiscuous mode [ 71.732615][ T6549] ------------[ cut here ]------------ [ 71.741082][ T6549] WARNING: CPU: 1 PID: 6549 at net/core/devlink.c:5158 devlink_nl_region_notify+0x184/0x1e0 [ 71.752103][ T6549] Modules linked in: [ 71.757480][ T6549] CPU: 1 PID: 6549 Comm: syz-executor.0 Not tainted 5.15.0-rc2-syzkaller #0 [ 71.767222][ T6549] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 71.778490][ T6549] RIP: 0010:devlink_nl_region_notify+0x184/0x1e0 [ 71.785720][ T6549] 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 f1 bb 41 fa e8 ec bb 41 fa <0f> 0b e9 f7 fe ff ff e8 e0 bb 41 fa 0f 0b eb da 4c 89 e7 e8 b4 17 [ 71.807505][ T6549] RSP: 0018:ffffc90002c1f658 EFLAGS: 00010293 [ 71.814501][ T6549] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 71.822741][ T6549] RDX: ffff888017fbb900 RSI: ffffffff87344fa4 RDI: 0000000000000003 [ 71.831484][ T6549] RBP: ffff88801b7cce00 R08: 0000000000000000 R09: 0000000000000000 [ 71.841872][ T6549] R10: ffffffff87344e9a R11: 0000000000000000 R12: ffff888024d92000 [ 71.850560][ T6549] R13: 0000000000000000 R14: 000000000000002c R15: ffff888024d92070 [ 71.858897][ T6549] FS: 00005555555a9400(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 71.868536][ T6549] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 71.875393][ T6549] CR2: 00007f5745d45740 CR3: 00000000694a9000 CR4: 00000000003506f0 [ 71.883676][ T6549] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 71.892108][ T6549] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 71.900570][ T6549] Call Trace: [ 71.904058][ T6549] devlink_region_create+0x39f/0x4c0 [ 71.909557][ T6549] nsim_dev_probe+0x5f6/0x1150 [ 71.914448][ T6549] ? nsim_esw_legacy_enable+0x1b0/0x1b0 [ 71.920198][ T6549] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 71.926740][ T6549] ? kernfs_create_link+0x1b3/0x230 [ 71.932056][ T6549] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 71.938702][ T6549] ? kernfs_put+0x31/0x50 [ 71.943060][ T6549] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 71.950430][ T6549] ? sysfs_do_create_link_sd+0xbb/0x140 [ 71.957062][ T6549] ? sysfs_create_link+0x67/0xc0 [ 71.962288][ T6549] ? nsim_bus_remove+0x20/0x20 [ 71.967505][ T6549] really_probe+0x245/0xcc0 [ 71.972130][ T6549] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 71.978494][ T6549] __driver_probe_device+0x338/0x4d0 [ 71.984633][ T6549] driver_probe_device+0x4c/0x1a0 [ 71.989687][ T6549] __device_attach_driver+0x20b/0x2f0 [ 71.995163][ T6549] ? driver_allows_async_probing+0x150/0x150 [ 72.001165][ T6549] bus_for_each_drv+0x15f/0x1e0 [ 72.007149][ T6549] ? bus_for_each_dev+0x1d0/0x1d0 [ 72.012207][ T6549] ? rcu_read_lock_sched_held+0x3a/0x70 [ 72.018770][ T6549] __device_attach+0x228/0x4a0 [ 72.024573][ T6549] ? device_driver_attach+0x210/0x210 [ 72.029976][ T6549] ? kobject_uevent_env+0x2bb/0x1650 [ 72.036168][ T6549] bus_probe_device+0x1e4/0x290 [ 72.041303][ T6549] device_add+0xc35/0x21b0 [ 72.047015][ T6549] ? lockdep_init_map_type+0x2c3/0x7b0 [ 72.052520][ T6549] ? lockdep_init_map_type+0x2c3/0x7b0 [ 72.058416][ T6549] ? __fw_devlink_link_to_suppliers+0x5e0/0x5e0 [ 72.064966][ T6549] ? __raw_spin_lock_init+0x36/0x110 [ 72.070419][ T6549] new_device_store+0x48b/0x770 [ 72.075500][ T6549] ? nsim_bus_dev_numvfs_store+0x3e0/0x3e0 [ 72.081571][ T6549] ? nsim_bus_dev_numvfs_store+0x3e0/0x3e0 [ 72.087462][ T6549] ? sysfs_file_ops+0x1c0/0x1c0 [ 72.092437][ T6549] bus_attr_store+0x72/0xa0 [ 72.097073][ T6549] ? bus_attr_show+0x90/0x90 [ 72.101795][ T6549] sysfs_kf_write+0x110/0x160 [ 72.107021][ T6549] kernfs_fop_write_iter+0x342/0x500 [ 72.112519][ T6549] new_sync_write+0x429/0x660 [ 72.117586][ T6549] ? new_sync_read+0x6e0/0x6e0 [ 72.122369][ T6549] ? lock_release+0x720/0x720 [ 72.127336][ T6549] vfs_write+0x7cf/0xae0 [ 72.131604][ T6549] ksys_write+0x12d/0x250 [ 72.136137][ T6549] ? __ia32_sys_read+0xb0/0xb0 [ 72.141079][ T6549] ? syscall_enter_from_user_mode+0x21/0x70 [ 72.147058][ T6549] do_syscall_64+0x35/0xb0 [ 72.151601][ T6549] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 72.157592][ T6549] RIP: 0033:0x7fee302283ef [ 72.162425][ T6549] 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 [ 72.182229][ T6549] RSP: 002b:00007ffd3044f590 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 [ 72.190775][ T6549] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fee302283ef [ 72.198848][ T6549] RDX: 0000000000000003 RSI: 00007ffd3044f5e0 RDI: 0000000000000004 [ 72.206912][ T6549] RBP: 0000000000000004 R08: 0000000000000000 R09: 00007ffd3044f530 [ 72.215244][ T6549] R10: 0000000000000000 R11: 0000000000000293 R12: 00007fee302cf971 [ 72.223604][ T6549] R13: 00007ffd3044f5e0 R14: 0000000000000000 R15: 00007ffd3044fcb0 [ 72.231870][ T6549] Kernel panic - not syncing: panic_on_warn set ... [ 72.238446][ T6549] CPU: 0 PID: 6549 Comm: syz-executor.0 Not tainted 5.15.0-rc2-syzkaller #0 [ 72.247827][ T6549] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 72.259088][ T6549] Call Trace: [ 72.262367][ T6549] dump_stack_lvl+0xcd/0x134 [ 72.267041][ T6549] panic+0x2b0/0x6dd [ 72.271428][ T6549] ? __warn_printk+0xf3/0xf3 [ 72.276104][ T6549] ? __warn.cold+0x1a/0x44 [ 72.280642][ T6549] ? devlink_nl_region_notify+0x184/0x1e0 [ 72.286537][ T6549] __warn.cold+0x35/0x44 [ 72.290895][ T6549] ? devlink_nl_region_notify+0x184/0x1e0 [ 72.296733][ T6549] report_bug+0x1bd/0x210 [ 72.301224][ T6549] handle_bug+0x3c/0x60 [ 72.305557][ T6549] exc_invalid_op+0x14/0x40 [ 72.310055][ T6549] asm_exc_invalid_op+0x12/0x20 [ 72.314939][ T6549] RIP: 0010:devlink_nl_region_notify+0x184/0x1e0 [ 72.321529][ T6549] 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 f1 bb 41 fa e8 ec bb 41 fa <0f> 0b e9 f7 fe ff ff e8 e0 bb 41 fa 0f 0b eb da 4c 89 e7 e8 b4 17 [ 72.341745][ T6549] RSP: 0018:ffffc90002c1f658 EFLAGS: 00010293 [ 72.347845][ T6549] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 72.355811][ T6549] RDX: ffff888017fbb900 RSI: ffffffff87344fa4 RDI: 0000000000000003 [ 72.363785][ T6549] RBP: ffff88801b7cce00 R08: 0000000000000000 R09: 0000000000000000 [ 72.371765][ T6549] R10: ffffffff87344e9a R11: 0000000000000000 R12: ffff888024d92000 [ 72.379922][ T6549] R13: 0000000000000000 R14: 000000000000002c R15: ffff888024d92070 [ 72.388001][ T6549] ? devlink_nl_region_notify+0x7a/0x1e0 [ 72.393654][ T6549] ? devlink_nl_region_notify+0x184/0x1e0 [ 72.399383][ T6549] ? devlink_nl_region_notify+0x184/0x1e0 [ 72.405110][ T6549] devlink_region_create+0x39f/0x4c0 [ 72.410429][ T6549] nsim_dev_probe+0x5f6/0x1150 [ 72.415286][ T6549] ? nsim_esw_legacy_enable+0x1b0/0x1b0 [ 72.420857][ T6549] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 72.427405][ T6549] ? kernfs_create_link+0x1b3/0x230 [ 72.432633][ T6549] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 72.438965][ T6549] ? kernfs_put+0x31/0x50 [ 72.443292][ T6549] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 72.449836][ T6549] ? sysfs_do_create_link_sd+0xbb/0x140 [ 72.455495][ T6549] ? sysfs_create_link+0x67/0xc0 [ 72.460463][ T6549] ? nsim_bus_remove+0x20/0x20 [ 72.465255][ T6549] really_probe+0x245/0xcc0 [ 72.469783][ T6549] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 72.476032][ T6549] __driver_probe_device+0x338/0x4d0 [ 72.481335][ T6549] driver_probe_device+0x4c/0x1a0 [ 72.486364][ T6549] __device_attach_driver+0x20b/0x2f0 [ 72.491739][ T6549] ? driver_allows_async_probing+0x150/0x150 [ 72.497982][ T6549] bus_for_each_drv+0x15f/0x1e0 [ 72.502847][ T6549] ? bus_for_each_dev+0x1d0/0x1d0 [ 72.507959][ T6549] ? rcu_read_lock_sched_held+0x3a/0x70 [ 72.513785][ T6549] __device_attach+0x228/0x4a0 [ 72.518552][ T6549] ? device_driver_attach+0x210/0x210 [ 72.524016][ T6549] ? kobject_uevent_env+0x2bb/0x1650 [ 72.529401][ T6549] bus_probe_device+0x1e4/0x290 [ 72.534381][ T6549] device_add+0xc35/0x21b0 [ 72.538974][ T6549] ? lockdep_init_map_type+0x2c3/0x7b0 [ 72.544705][ T6549] ? lockdep_init_map_type+0x2c3/0x7b0 [ 72.550284][ T6549] ? __fw_devlink_link_to_suppliers+0x5e0/0x5e0 [ 72.556874][ T6549] ? __raw_spin_lock_init+0x36/0x110 [ 72.562183][ T6549] new_device_store+0x48b/0x770 [ 72.567044][ T6549] ? nsim_bus_dev_numvfs_store+0x3e0/0x3e0 [ 72.572863][ T6549] ? nsim_bus_dev_numvfs_store+0x3e0/0x3e0 [ 72.578951][ T6549] ? sysfs_file_ops+0x1c0/0x1c0 [ 72.583818][ T6549] bus_attr_store+0x72/0xa0 [ 72.588409][ T6549] ? bus_attr_show+0x90/0x90 [ 72.593100][ T6549] sysfs_kf_write+0x110/0x160 [ 72.597786][ T6549] kernfs_fop_write_iter+0x342/0x500 [ 72.603085][ T6549] new_sync_write+0x429/0x660 [ 72.607939][ T6549] ? new_sync_read+0x6e0/0x6e0 [ 72.612720][ T6549] ? lock_release+0x720/0x720 [ 72.617421][ T6549] vfs_write+0x7cf/0xae0 [ 72.621675][ T6549] ksys_write+0x12d/0x250 [ 72.626177][ T6549] ? __ia32_sys_read+0xb0/0xb0 [ 72.631065][ T6549] ? syscall_enter_from_user_mode+0x21/0x70 [ 72.637189][ T6549] do_syscall_64+0x35/0xb0 [ 72.641697][ T6549] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 72.647601][ T6549] RIP: 0033:0x7fee302283ef [ 72.652014][ T6549] 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 [ 72.672443][ T6549] RSP: 002b:00007ffd3044f590 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 [ 72.681086][ T6549] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fee302283ef [ 72.689155][ T6549] RDX: 0000000000000003 RSI: 00007ffd3044f5e0 RDI: 0000000000000004 [ 72.697250][ T6549] RBP: 0000000000000004 R08: 0000000000000000 R09: 00007ffd3044f530 [ 72.705244][ T6549] R10: 0000000000000000 R11: 0000000000000293 R12: 00007fee302cf971 [ 72.713314][ T6549] R13: 00007ffd3044f5e0 R14: 0000000000000000 R15: 00007ffd3044fcb0 [ 72.721839][ T6549] Kernel Offset: disabled [ 72.726356][ T6549] Rebooting in 86400 seconds..