[ 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. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.100' (ECDSA) to the list of known hosts. 2021/09/29 13:36:54 fuzzer started 2021/09/29 13:36:54 connecting to host at 10.128.0.169:46025 2021/09/29 13:36:54 checking machine... 2021/09/29 13:36:54 checking revisions... 2021/09/29 13:36:54 testing simple program... syzkaller login: [ 71.115210][ T6546] chnl_net:caif_netlink_parms(): no params data found [ 71.193724][ T6546] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.201928][ T6546] bridge0: port 1(bridge_slave_0) entered disabled state [ 71.210264][ T6546] device bridge_slave_0 entered promiscuous mode [ 71.220751][ T6546] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.228744][ T6546] bridge0: port 2(bridge_slave_1) entered disabled state [ 71.237322][ T6546] device bridge_slave_1 entered promiscuous mode [ 71.271097][ T6546] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 71.283769][ T6546] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 71.318192][ T6546] team0: Port device team_slave_0 added [ 71.326349][ T6546] team0: Port device team_slave_1 added [ 71.357024][ T6546] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 71.364626][ T6546] 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. [ 71.392805][ T6546] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 71.406159][ T6546] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 71.414085][ T6546] 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. [ 71.441123][ T6546] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 71.478385][ T6546] device hsr_slave_0 entered promiscuous mode [ 71.486812][ T6546] device hsr_slave_1 entered promiscuous mode [ 71.573697][ T6546] ------------[ cut here ]------------ [ 71.579452][ T6546] WARNING: CPU: 0 PID: 6546 at net/core/devlink.c:5158 devlink_nl_region_notify+0x184/0x1e0 [ 71.590785][ T6546] Modules linked in: [ 71.595028][ T6546] CPU: 0 PID: 6546 Comm: syz-executor.0 Not tainted 5.15.0-rc2-syzkaller #0 [ 71.604251][ T6546] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 71.619772][ T6546] RIP: 0010:devlink_nl_region_notify+0x184/0x1e0 [ 71.626574][ T6546] 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 [ 71.648159][ T6546] RSP: 0018:ffffc90002cef658 EFLAGS: 00010293 [ 71.655404][ T6546] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 71.663693][ T6546] RDX: ffff888017fdd580 RSI: ffffffff87344fa4 RDI: 0000000000000003 [ 71.672133][ T6546] RBP: ffff8880131a4e80 R08: 0000000000000000 R09: 0000000000000000 [ 71.680326][ T6546] R10: ffffffff87344e9a R11: 0000000000000000 R12: ffff88801a27e000 [ 71.688783][ T6546] R13: 0000000000000000 R14: 000000000000002c R15: ffff88801a27e070 [ 71.697536][ T6546] FS: 0000555556d8e400(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 71.706866][ T6546] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 71.713640][ T6546] CR2: 00007fd3dc2b7010 CR3: 00000000686f2000 CR4: 00000000003506f0 [ 71.721801][ T6546] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 71.730152][ T6546] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 71.738457][ T6546] Call Trace: [ 71.742012][ T6546] devlink_region_create+0x39f/0x4c0 [ 71.747722][ T6546] nsim_dev_probe+0x5f6/0x1150 [ 71.752813][ T6546] ? nsim_esw_legacy_enable+0x1b0/0x1b0 [ 71.758995][ T6546] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 71.765329][ T6546] ? kernfs_create_link+0x1b3/0x230 [ 71.770551][ T6546] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 71.777154][ T6546] ? kernfs_put+0x31/0x50 [ 71.781613][ T6546] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 71.788062][ T6546] ? sysfs_do_create_link_sd+0xbb/0x140 [ 71.793939][ T6546] ? sysfs_create_link+0x67/0xc0 [ 71.799352][ T6546] ? nsim_bus_remove+0x20/0x20 [ 71.804278][ T6546] really_probe+0x245/0xcc0 [ 71.808813][ T6546] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 71.815364][ T6546] __driver_probe_device+0x338/0x4d0 [ 71.820780][ T6546] driver_probe_device+0x4c/0x1a0 [ 71.826163][ T6546] __device_attach_driver+0x20b/0x2f0 [ 71.831695][ T6546] ? driver_allows_async_probing+0x150/0x150 [ 71.837717][ T6546] bus_for_each_drv+0x15f/0x1e0 [ 71.843082][ T6546] ? bus_for_each_dev+0x1d0/0x1d0 [ 71.848309][ T6546] ? rcu_read_lock_sched_held+0x3a/0x70 [ 71.854091][ T6546] __device_attach+0x228/0x4a0 [ 71.858987][ T6546] ? device_driver_attach+0x210/0x210 [ 71.864793][ T6546] ? kobject_uevent_env+0x2bb/0x1650 [ 71.870550][ T6546] bus_probe_device+0x1e4/0x290 [ 71.876841][ T6546] device_add+0xc35/0x21b0 [ 71.882305][ T6546] ? lockdep_init_map_type+0x2c3/0x7b0 [ 71.888047][ T6546] ? lockdep_init_map_type+0x2c3/0x7b0 [ 71.893885][ T6546] ? __fw_devlink_link_to_suppliers+0x5e0/0x5e0 [ 71.900635][ T6546] ? __raw_spin_lock_init+0x36/0x110 [ 71.906263][ T6546] new_device_store+0x48b/0x770 [ 71.911243][ T6546] ? nsim_bus_dev_numvfs_store+0x3e0/0x3e0 [ 71.917397][ T6546] ? nsim_bus_dev_numvfs_store+0x3e0/0x3e0 [ 71.923688][ T6546] ? sysfs_file_ops+0x1c0/0x1c0 [ 71.928714][ T6546] bus_attr_store+0x72/0xa0 [ 71.933503][ T6546] ? bus_attr_show+0x90/0x90 [ 71.938134][ T6546] sysfs_kf_write+0x110/0x160 [ 71.943898][ T6546] kernfs_fop_write_iter+0x342/0x500 [ 71.949409][ T6546] new_sync_write+0x429/0x660 [ 71.954794][ T6546] ? new_sync_read+0x6e0/0x6e0 [ 71.959616][ T6546] ? lock_release+0x720/0x720 [ 71.966774][ T6546] vfs_write+0x7cf/0xae0 [ 71.971317][ T6546] ksys_write+0x12d/0x250 [ 71.976312][ T6546] ? __ia32_sys_read+0xb0/0xb0 [ 71.982597][ T6546] ? syscall_enter_from_user_mode+0x21/0x70 [ 71.989486][ T6546] do_syscall_64+0x35/0xb0 [ 71.995711][ T6546] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 72.002878][ T6546] RIP: 0033:0x7f4c4136f3ef [ 72.007893][ T6546] 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 [ 72.031576][ T6546] RSP: 002b:00007ffdd831b260 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 [ 72.040297][ T6546] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f4c4136f3ef [ 72.050128][ T6546] RDX: 0000000000000003 RSI: 00007ffdd831b2b0 RDI: 0000000000000004 [ 72.059507][ T6546] RBP: 0000000000000004 R08: 0000000000000000 R09: 00007ffdd831b200 [ 72.068770][ T6546] R10: 0000000000000000 R11: 0000000000000293 R12: 00007f4c41416971 [ 72.076982][ T6546] R13: 00007ffdd831b2b0 R14: 0000000000000000 R15: 00007ffdd831b980 [ 72.085859][ T6546] Kernel panic - not syncing: panic_on_warn set ... [ 72.092716][ T6546] CPU: 1 PID: 6546 Comm: syz-executor.0 Not tainted 5.15.0-rc2-syzkaller #0 [ 72.101690][ T6546] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 72.112201][ T6546] Call Trace: [ 72.115493][ T6546] dump_stack_lvl+0xcd/0x134 [ 72.120109][ T6546] panic+0x2b0/0x6dd [ 72.124261][ T6546] ? __warn_printk+0xf3/0xf3 [ 72.128901][ T6546] ? __warn.cold+0x1a/0x44 [ 72.133583][ T6546] ? devlink_nl_region_notify+0x184/0x1e0 [ 72.139890][ T6546] __warn.cold+0x35/0x44 [ 72.144302][ T6546] ? devlink_nl_region_notify+0x184/0x1e0 [ 72.150906][ T6546] report_bug+0x1bd/0x210 [ 72.155410][ T6546] handle_bug+0x3c/0x60 [ 72.159761][ T6546] exc_invalid_op+0x14/0x40 [ 72.164795][ T6546] asm_exc_invalid_op+0x12/0x20 [ 72.170722][ T6546] RIP: 0010:devlink_nl_region_notify+0x184/0x1e0 [ 72.178254][ T6546] 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 [ 72.198678][ T6546] RSP: 0018:ffffc90002cef658 EFLAGS: 00010293 [ 72.204764][ T6546] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 72.212970][ T6546] RDX: ffff888017fdd580 RSI: ffffffff87344fa4 RDI: 0000000000000003 [ 72.221198][ T6546] RBP: ffff8880131a4e80 R08: 0000000000000000 R09: 0000000000000000 [ 72.229970][ T6546] R10: ffffffff87344e9a R11: 0000000000000000 R12: ffff88801a27e000 [ 72.238114][ T6546] R13: 0000000000000000 R14: 000000000000002c R15: ffff88801a27e070 [ 72.246735][ T6546] ? devlink_nl_region_notify+0x7a/0x1e0 [ 72.252783][ T6546] ? devlink_nl_region_notify+0x184/0x1e0 [ 72.258661][ T6546] ? devlink_nl_region_notify+0x184/0x1e0 [ 72.265782][ T6546] devlink_region_create+0x39f/0x4c0 [ 72.271502][ T6546] nsim_dev_probe+0x5f6/0x1150 [ 72.277025][ T6546] ? nsim_esw_legacy_enable+0x1b0/0x1b0 [ 72.282836][ T6546] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 72.289217][ T6546] ? kernfs_create_link+0x1b3/0x230 [ 72.294428][ T6546] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 72.300970][ T6546] ? kernfs_put+0x31/0x50 [ 72.305450][ T6546] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 72.311697][ T6546] ? sysfs_do_create_link_sd+0xbb/0x140 [ 72.317333][ T6546] ? sysfs_create_link+0x67/0xc0 [ 72.322368][ T6546] ? nsim_bus_remove+0x20/0x20 [ 72.327154][ T6546] really_probe+0x245/0xcc0 [ 72.332257][ T6546] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 72.338765][ T6546] __driver_probe_device+0x338/0x4d0 [ 72.344422][ T6546] driver_probe_device+0x4c/0x1a0 [ 72.349700][ T6546] __device_attach_driver+0x20b/0x2f0 [ 72.355195][ T6546] ? driver_allows_async_probing+0x150/0x150 [ 72.361179][ T6546] bus_for_each_drv+0x15f/0x1e0 [ 72.366131][ T6546] ? bus_for_each_dev+0x1d0/0x1d0 [ 72.372664][ T6546] ? rcu_read_lock_sched_held+0x3a/0x70 [ 72.378770][ T6546] __device_attach+0x228/0x4a0 [ 72.383791][ T6546] ? device_driver_attach+0x210/0x210 [ 72.389730][ T6546] ? kobject_uevent_env+0x2bb/0x1650 [ 72.395423][ T6546] bus_probe_device+0x1e4/0x290 [ 72.400307][ T6546] device_add+0xc35/0x21b0 [ 72.405020][ T6546] ? lockdep_init_map_type+0x2c3/0x7b0 [ 72.410783][ T6546] ? lockdep_init_map_type+0x2c3/0x7b0 [ 72.416465][ T6546] ? __fw_devlink_link_to_suppliers+0x5e0/0x5e0 [ 72.422901][ T6546] ? __raw_spin_lock_init+0x36/0x110 [ 72.428400][ T6546] new_device_store+0x48b/0x770 [ 72.433266][ T6546] ? nsim_bus_dev_numvfs_store+0x3e0/0x3e0 [ 72.439226][ T6546] ? nsim_bus_dev_numvfs_store+0x3e0/0x3e0 [ 72.445309][ T6546] ? sysfs_file_ops+0x1c0/0x1c0 [ 72.450257][ T6546] bus_attr_store+0x72/0xa0 [ 72.454784][ T6546] ? bus_attr_show+0x90/0x90 [ 72.459658][ T6546] sysfs_kf_write+0x110/0x160 [ 72.464347][ T6546] kernfs_fop_write_iter+0x342/0x500 [ 72.469737][ T6546] new_sync_write+0x429/0x660 [ 72.474438][ T6546] ? new_sync_read+0x6e0/0x6e0 [ 72.479339][ T6546] ? lock_release+0x720/0x720 [ 72.484127][ T6546] vfs_write+0x7cf/0xae0 [ 72.488472][ T6546] ksys_write+0x12d/0x250 [ 72.493116][ T6546] ? __ia32_sys_read+0xb0/0xb0 [ 72.498014][ T6546] ? syscall_enter_from_user_mode+0x21/0x70 [ 72.503919][ T6546] do_syscall_64+0x35/0xb0 [ 72.508595][ T6546] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 72.515493][ T6546] RIP: 0033:0x7f4c4136f3ef [ 72.520182][ T6546] 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 [ 72.541141][ T6546] RSP: 002b:00007ffdd831b260 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 [ 72.549989][ T6546] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f4c4136f3ef [ 72.558000][ T6546] RDX: 0000000000000003 RSI: 00007ffdd831b2b0 RDI: 0000000000000004 [ 72.566334][ T6546] RBP: 0000000000000004 R08: 0000000000000000 R09: 00007ffdd831b200 [ 72.574508][ T6546] R10: 0000000000000000 R11: 0000000000000293 R12: 00007f4c41416971 [ 72.582735][ T6546] R13: 00007ffdd831b2b0 R14: 0000000000000000 R15: 00007ffdd831b980 [ 72.591188][ T6546] Kernel Offset: disabled [ 72.595913][ T6546] Rebooting in 86400 seconds..