[ 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 '10.128.1.95' (ECDSA) to the list of known hosts. 2021/09/28 12:48:23 fuzzer started 2021/09/28 12:48:23 connecting to host at 10.128.0.169:43689 2021/09/28 12:48:23 checking machine... 2021/09/28 12:48:23 checking revisions... 2021/09/28 12:48:24 testing simple program... syzkaller login: [ 70.530196][ T6570] chnl_net:caif_netlink_parms(): no params data found [ 70.605090][ T6570] bridge0: port 1(bridge_slave_0) entered blocking state [ 70.614930][ T6570] bridge0: port 1(bridge_slave_0) entered disabled state [ 70.623979][ T6570] device bridge_slave_0 entered promiscuous mode [ 70.634115][ T6570] bridge0: port 2(bridge_slave_1) entered blocking state [ 70.642718][ T6570] bridge0: port 2(bridge_slave_1) entered disabled state [ 70.651761][ T6570] device bridge_slave_1 entered promiscuous mode [ 70.685445][ T6570] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 70.697650][ T6570] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 70.733843][ T6570] team0: Port device team_slave_0 added [ 70.741762][ T6570] team0: Port device team_slave_1 added [ 70.770069][ T6570] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 70.777099][ T6570] 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. [ 70.804780][ T6570] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 70.818920][ T6570] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 70.826231][ T6570] 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. [ 70.853435][ T6570] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 70.891107][ T6570] device hsr_slave_0 entered promiscuous mode [ 70.898924][ T6570] device hsr_slave_1 entered promiscuous mode [ 70.989977][ T6570] ------------[ cut here ]------------ [ 70.997160][ T6570] WARNING: CPU: 1 PID: 6570 at net/core/devlink.c:5158 devlink_nl_region_notify+0x184/0x1e0 [ 71.008071][ T6570] Modules linked in: [ 71.012476][ T6570] CPU: 1 PID: 6570 Comm: syz-executor.0 Not tainted 5.15.0-rc2-syzkaller #0 [ 71.022460][ T6570] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 71.033214][ T6570] RIP: 0010:devlink_nl_region_notify+0x184/0x1e0 [ 71.040243][ T6570] 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 [ 71.062547][ T6570] RSP: 0018:ffffc90002d9f658 EFLAGS: 00010293 [ 71.069891][ T6570] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 71.078870][ T6570] RDX: ffff888024938000 RSI: ffffffff87344e94 RDI: 0000000000000003 [ 71.087952][ T6570] RBP: ffff888024373000 R08: 0000000000000000 R09: 0000000000000000 [ 71.096789][ T6570] R10: ffffffff87344d8a R11: 0000000000000000 R12: ffff88806dae3000 [ 71.105043][ T6570] R13: 0000000000000000 R14: 000000000000002c R15: ffff88806dae3070 [ 71.113392][ T6570] FS: 0000555556b1f400(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 71.122605][ T6570] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 71.129755][ T6570] CR2: 000055a5e2a91928 CR3: 0000000068400000 CR4: 00000000003506e0 [ 71.140066][ T6570] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 71.148283][ T6570] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 71.157464][ T6570] Call Trace: [ 71.161119][ T6570] devlink_region_create+0x39f/0x4c0 [ 71.167217][ T6570] nsim_dev_probe+0x5f6/0x1150 [ 71.172605][ T6570] ? nsim_esw_legacy_enable+0x1b0/0x1b0 [ 71.178424][ T6570] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 71.184963][ T6570] ? kernfs_create_link+0x1b3/0x230 [ 71.190267][ T6570] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 71.196720][ T6570] ? kernfs_put+0x31/0x50 [ 71.201150][ T6570] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 71.208153][ T6570] ? sysfs_do_create_link_sd+0xbb/0x140 [ 71.213915][ T6570] ? sysfs_create_link+0x67/0xc0 [ 71.219169][ T6570] ? nsim_bus_remove+0x20/0x20 [ 71.223979][ T6570] really_probe+0x245/0xcc0 [ 71.229205][ T6570] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 71.235593][ T6570] __driver_probe_device+0x338/0x4d0 [ 71.240915][ T6570] driver_probe_device+0x4c/0x1a0 [ 71.246007][ T6570] __device_attach_driver+0x20b/0x2f0 [ 71.251587][ T6570] ? driver_allows_async_probing+0x150/0x150 [ 71.257763][ T6570] bus_for_each_drv+0x15f/0x1e0 [ 71.262729][ T6570] ? bus_for_each_dev+0x1d0/0x1d0 [ 71.268081][ T6570] ? rcu_read_lock_sched_held+0x3a/0x70 [ 71.274268][ T6570] __device_attach+0x228/0x4a0 [ 71.279234][ T6570] ? device_driver_attach+0x210/0x210 [ 71.284816][ T6570] ? kobject_uevent_env+0x2bb/0x1650 [ 71.290507][ T6570] bus_probe_device+0x1e4/0x290 [ 71.295615][ T6570] device_add+0xc35/0x21b0 [ 71.300088][ T6570] ? lockdep_init_map_type+0x2c3/0x7b0 [ 71.305880][ T6570] ? lockdep_init_map_type+0x2c3/0x7b0 [ 71.311452][ T6570] ? __fw_devlink_link_to_suppliers+0x5e0/0x5e0 [ 71.317897][ T6570] ? __raw_spin_lock_init+0x36/0x110 [ 71.323377][ T6570] new_device_store+0x48b/0x770 [ 71.328565][ T6570] ? nsim_bus_dev_numvfs_store+0x3e0/0x3e0 [ 71.334400][ T6570] ? nsim_bus_dev_numvfs_store+0x3e0/0x3e0 [ 71.340346][ T6570] ? sysfs_file_ops+0x1c0/0x1c0 [ 71.345414][ T6570] bus_attr_store+0x72/0xa0 [ 71.349971][ T6570] ? bus_attr_show+0x90/0x90 [ 71.354580][ T6570] sysfs_kf_write+0x110/0x160 [ 71.359505][ T6570] kernfs_fop_write_iter+0x342/0x500 [ 71.365514][ T6570] new_sync_write+0x429/0x660 [ 71.370558][ T6570] ? new_sync_read+0x6e0/0x6e0 [ 71.375568][ T6570] ? lock_release+0x720/0x720 [ 71.380545][ T6570] vfs_write+0x7cf/0xae0 [ 71.384894][ T6570] ksys_write+0x12d/0x250 [ 71.389480][ T6570] ? __ia32_sys_read+0xb0/0xb0 [ 71.394525][ T6570] ? syscall_enter_from_user_mode+0x21/0x70 [ 71.400571][ T6570] do_syscall_64+0x35/0xb0 [ 71.405194][ T6570] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 71.411344][ T6570] RIP: 0033:0x7f7a19eb03ef [ 71.415887][ T6570] 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 [ 71.436162][ T6570] RSP: 002b:00007ffd286c7120 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 [ 71.444619][ T6570] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f7a19eb03ef [ 71.453221][ T6570] RDX: 0000000000000003 RSI: 00007ffd286c7170 RDI: 0000000000000004 [ 71.461677][ T6570] RBP: 0000000000000004 R08: 0000000000000000 R09: 00007ffd286c70c0 [ 71.469893][ T6570] R10: 0000000000000000 R11: 0000000000000293 R12: 00007f7a19f57971 [ 71.478056][ T6570] R13: 00007ffd286c7170 R14: 0000000000000000 R15: 00007ffd286c7840 [ 71.486210][ T6570] Kernel panic - not syncing: panic_on_warn set ... [ 71.493082][ T6570] CPU: 1 PID: 6570 Comm: syz-executor.0 Not tainted 5.15.0-rc2-syzkaller #0 [ 71.502038][ T6570] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 71.512347][ T6570] Call Trace: [ 71.515636][ T6570] dump_stack_lvl+0xcd/0x134 [ 71.520772][ T6570] panic+0x2b0/0x6dd [ 71.524760][ T6570] ? __warn_printk+0xf3/0xf3 [ 71.529512][ T6570] ? __warn.cold+0x1a/0x44 [ 71.534192][ T6570] ? devlink_nl_region_notify+0x184/0x1e0 [ 71.539920][ T6570] __warn.cold+0x35/0x44 [ 71.544175][ T6570] ? devlink_nl_region_notify+0x184/0x1e0 [ 71.550053][ T6570] report_bug+0x1bd/0x210 [ 71.554806][ T6570] handle_bug+0x3c/0x60 [ 71.559092][ T6570] exc_invalid_op+0x14/0x40 [ 71.563705][ T6570] asm_exc_invalid_op+0x12/0x20 [ 71.568783][ T6570] RIP: 0010:devlink_nl_region_notify+0x184/0x1e0 [ 71.575246][ T6570] 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 [ 71.595583][ T6570] RSP: 0018:ffffc90002d9f658 EFLAGS: 00010293 [ 71.601850][ T6570] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 71.610010][ T6570] RDX: ffff888024938000 RSI: ffffffff87344e94 RDI: 0000000000000003 [ 71.618260][ T6570] RBP: ffff888024373000 R08: 0000000000000000 R09: 0000000000000000 [ 71.626286][ T6570] R10: ffffffff87344d8a R11: 0000000000000000 R12: ffff88806dae3000 [ 71.634278][ T6570] R13: 0000000000000000 R14: 000000000000002c R15: ffff88806dae3070 [ 71.643115][ T6570] ? devlink_nl_region_notify+0x7a/0x1e0 [ 71.648871][ T6570] ? devlink_nl_region_notify+0x184/0x1e0 [ 71.655086][ T6570] ? devlink_nl_region_notify+0x184/0x1e0 [ 71.660821][ T6570] devlink_region_create+0x39f/0x4c0 [ 71.666301][ T6570] nsim_dev_probe+0x5f6/0x1150 [ 71.671075][ T6570] ? nsim_esw_legacy_enable+0x1b0/0x1b0 [ 71.676803][ T6570] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 71.683047][ T6570] ? kernfs_create_link+0x1b3/0x230 [ 71.688268][ T6570] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 71.694688][ T6570] ? kernfs_put+0x31/0x50 [ 71.699022][ T6570] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 71.705762][ T6570] ? sysfs_do_create_link_sd+0xbb/0x140 [ 71.711688][ T6570] ? sysfs_create_link+0x67/0xc0 [ 71.717009][ T6570] ? nsim_bus_remove+0x20/0x20 [ 71.721805][ T6570] really_probe+0x245/0xcc0 [ 71.726338][ T6570] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 71.732868][ T6570] __driver_probe_device+0x338/0x4d0 [ 71.738251][ T6570] driver_probe_device+0x4c/0x1a0 [ 71.743546][ T6570] __device_attach_driver+0x20b/0x2f0 [ 71.749039][ T6570] ? driver_allows_async_probing+0x150/0x150 [ 71.755045][ T6570] bus_for_each_drv+0x15f/0x1e0 [ 71.759904][ T6570] ? bus_for_each_dev+0x1d0/0x1d0 [ 71.764946][ T6570] ? rcu_read_lock_sched_held+0x3a/0x70 [ 71.770584][ T6570] __device_attach+0x228/0x4a0 [ 71.775437][ T6570] ? device_driver_attach+0x210/0x210 [ 71.781015][ T6570] ? kobject_uevent_env+0x2bb/0x1650 [ 71.786397][ T6570] bus_probe_device+0x1e4/0x290 [ 71.791441][ T6570] device_add+0xc35/0x21b0 [ 71.795863][ T6570] ? lockdep_init_map_type+0x2c3/0x7b0 [ 71.801319][ T6570] ? lockdep_init_map_type+0x2c3/0x7b0 [ 71.806776][ T6570] ? __fw_devlink_link_to_suppliers+0x5e0/0x5e0 [ 71.813348][ T6570] ? __raw_spin_lock_init+0x36/0x110 [ 71.818760][ T6570] new_device_store+0x48b/0x770 [ 71.823629][ T6570] ? nsim_bus_dev_numvfs_store+0x3e0/0x3e0 [ 71.829457][ T6570] ? nsim_bus_dev_numvfs_store+0x3e0/0x3e0 [ 71.835454][ T6570] ? sysfs_file_ops+0x1c0/0x1c0 [ 71.840622][ T6570] bus_attr_store+0x72/0xa0 [ 71.845135][ T6570] ? bus_attr_show+0x90/0x90 [ 71.849734][ T6570] sysfs_kf_write+0x110/0x160 [ 71.854416][ T6570] kernfs_fop_write_iter+0x342/0x500 [ 71.859713][ T6570] new_sync_write+0x429/0x660 [ 71.864393][ T6570] ? new_sync_read+0x6e0/0x6e0 [ 71.869170][ T6570] ? lock_release+0x720/0x720 [ 71.873884][ T6570] vfs_write+0x7cf/0xae0 [ 71.878165][ T6570] ksys_write+0x12d/0x250 [ 71.882513][ T6570] ? __ia32_sys_read+0xb0/0xb0 [ 71.887284][ T6570] ? syscall_enter_from_user_mode+0x21/0x70 [ 71.893359][ T6570] do_syscall_64+0x35/0xb0 [ 71.897780][ T6570] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 71.903765][ T6570] RIP: 0033:0x7f7a19eb03ef [ 71.908177][ T6570] 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 [ 71.927979][ T6570] RSP: 002b:00007ffd286c7120 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 [ 71.936581][ T6570] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f7a19eb03ef [ 71.944643][ T6570] RDX: 0000000000000003 RSI: 00007ffd286c7170 RDI: 0000000000000004 [ 71.952787][ T6570] RBP: 0000000000000004 R08: 0000000000000000 R09: 00007ffd286c70c0 [ 71.960928][ T6570] R10: 0000000000000000 R11: 0000000000000293 R12: 00007f7a19f57971 [ 71.968988][ T6570] R13: 00007ffd286c7170 R14: 0000000000000000 R15: 00007ffd286c7840 [ 71.977577][ T6570] Kernel Offset: disabled [ 71.982246][ T6570] Rebooting in 86400 seconds..