Warning: Permanently added '10.128.1.34' (ECDSA) to the list of known hosts. executing program [ 55.889223][ T8435] netlink: 8 bytes leftover after parsing attributes in process `syz-executor570'. [ 55.907148][ T8435] sysfs: cannot create duplicate filename '/dev/block/43:0' [ 55.914668][ T8435] CPU: 1 PID: 8435 Comm: syz-executor570 Not tainted 5.14.0-rc2-syzkaller #0 [ 55.923420][ T8435] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 55.933452][ T8435] Call Trace: [ 55.936711][ T8435] dump_stack_lvl+0xcd/0x134 [ 55.941299][ T8435] sysfs_warn_dup.cold+0x1c/0x29 [ 55.946219][ T8435] sysfs_do_create_link_sd+0x11e/0x140 [ 55.951659][ T8435] sysfs_create_link+0x5f/0xc0 [ 55.956402][ T8435] device_add+0x103c/0x2180 [ 55.960888][ T8435] ? __fw_devlink_link_to_suppliers+0x5e0/0x5e0 [ 55.967106][ T8435] ? do_raw_spin_unlock+0x171/0x230 [ 55.972288][ T8435] __device_add_disk+0x2bd/0xd10 [ 55.977213][ T8435] nbd_dev_add+0x73f/0x940 [ 55.981619][ T8435] nbd_genl_connect+0x551/0x1820 [ 55.986546][ T8435] ? nbd_start_device+0xd50/0xd50 [ 55.991559][ T8435] ? nla_get_range_signed+0x520/0x520 [ 55.996927][ T8435] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 56.003154][ T8435] ? genl_family_rcv_msg_attrs_parse.constprop.0+0x1b7/0x290 [ 56.010614][ T8435] ? genl_family_rcv_msg_attrs_parse.constprop.0+0xaf/0x290 [ 56.017894][ T8435] genl_family_rcv_msg_doit+0x228/0x320 [ 56.023429][ T8435] ? genl_family_rcv_msg_attrs_parse.constprop.0+0x290/0x290 [ 56.030794][ T8435] ? genl_op_from_small+0x23/0x3c0 [ 56.035894][ T8435] ? genl_get_cmd+0x3cf/0x480 [ 56.040563][ T8435] genl_rcv_msg+0x328/0x580 [ 56.045055][ T8435] ? genl_get_cmd+0x480/0x480 [ 56.049723][ T8435] ? nbd_start_device+0xd50/0xd50 [ 56.054734][ T8435] ? lock_release+0x720/0x720 [ 56.059401][ T8435] netlink_rcv_skb+0x153/0x420 [ 56.064150][ T8435] ? genl_get_cmd+0x480/0x480 [ 56.068816][ T8435] ? netlink_ack+0xa60/0xa60 [ 56.073403][ T8435] ? _copy_from_iter+0x12b/0x1320 [ 56.078418][ T8435] genl_rcv+0x24/0x40 [ 56.082388][ T8435] netlink_unicast+0x533/0x7d0 [ 56.087143][ T8435] ? netlink_attachskb+0x890/0x890 [ 56.092241][ T8435] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 56.098470][ T8435] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 56.104698][ T8435] ? __phys_addr_symbol+0x2c/0x70 [ 56.109707][ T8435] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 56.115411][ T8435] ? __check_object_size+0x16e/0x3f0 [ 56.120684][ T8435] netlink_sendmsg+0x86d/0xdb0 [ 56.125440][ T8435] ? netlink_unicast+0x7d0/0x7d0 [ 56.130369][ T8435] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 56.136596][ T8435] ? netlink_unicast+0x7d0/0x7d0 [ 56.141522][ T8435] sock_sendmsg+0xcf/0x120 [ 56.145921][ T8435] ____sys_sendmsg+0x6e8/0x810 [ 56.150674][ T8435] ? kernel_sendmsg+0x50/0x50 [ 56.155333][ T8435] ? do_recvmmsg+0x6d0/0x6d0 [ 56.159908][ T8435] ? lock_chain_count+0x20/0x20 [ 56.164740][ T8435] ? netlink_recvmsg+0x826/0xea0 [ 56.169670][ T8435] ___sys_sendmsg+0xf3/0x170 [ 56.174247][ T8435] ? sendmsg_copy_msghdr+0x160/0x160 [ 56.179519][ T8435] ? __lock_acquire+0x162f/0x54a0 [ 56.184538][ T8435] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 56.190504][ T8435] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 56.196476][ T8435] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 56.202702][ T8435] ? __fget_light+0x215/0x280 [ 56.207368][ T8435] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 56.213597][ T8435] __sys_sendmsg+0xe5/0x1b0 [ 56.218084][ T8435] ? __sys_sendmsg_sock+0x30/0x30 [ 56.223105][ T8435] ? syscall_enter_from_user_mode+0x21/0x70 [ 56.228992][ T8435] do_syscall_64+0x35/0xb0 [ 56.233394][ T8435] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 56.239277][ T8435] RIP: 0033:0x43fa49 [ 56.243156][ T8435] Code: 28 c3 e8 5a 14 00 00 66 2e 0f 1f 84 00 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 56.262749][ T8435] RSP: 002b:00007ffd8de69d18 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 56.271323][ T8435] RAX: ffffffffffffffda RBX: 00000000004004a0 RCX: 000000000043fa49 [ 56.279451][ T8435] RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000000000004 [ 56.287407][ T8435] RBP: 00000000004034b0 R08: 0000000000000000 R09: 00000000004004a0 [ 56.295361][ T8435] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000403540 [ 56.303315][ T8435] R13: 0000000000000000 R14: 00000000004ad018 R15: 00000000004004a0 [ 56.314808][ T8435] ------------[ cut here ]------------ [ 56.320520][ T8435] WARNING: CPU: 0 PID: 8435 at fs/sysfs/group.c:116 internal_create_group+0x911/0xb20 [ 56.330207][ T8435] Modules linked in: [ 56.334104][ T8435] CPU: 0 PID: 8435 Comm: syz-executor570 Not tainted 5.14.0-rc2-syzkaller #0 [ 56.343005][ T8435] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 56.353978][ T8435] RIP: 0010:internal_create_group+0x911/0xb20 [ 56.360143][ T8435] Code: 0f 85 e8 f7 ff ff 41 bd ea ff ff ff e9 34 fd ff ff e8 53 3b 82 ff 48 8b 7c 24 08 e8 89 11 ff ff e9 20 fd ff ff e8 3f 3b 82 ff <0f> 0b 41 bd ea ff ff ff e9 0e fd ff ff e8 2d 3b 82 ff 48 8b 14 24 [ 56.379829][ T8435] RSP: 0018:ffffc900010ff2a8 EFLAGS: 00010293 [ 56.385932][ T8435] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 56.393894][ T8435] RDX: ffff8880284f0000 RSI: ffffffff81f34d91 RDI: 0000000000000003 [ 56.401907][ T8435] RBP: ffff88801fd7b9a8 R08: 0000000000000000 R09: ffff88801fd7b9af [ 56.409993][ T8435] R10: ffffffff81f3453e R11: 0000000000000000 R12: 0000000000000000 [ 56.418030][ T8435] R13: ffff8881455db770 R14: 0000000000000000 R15: ffff8881455db77c [ 56.426188][ T8435] FS: 0000000000990300(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 56.435998][ T8435] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 56.442992][ T8435] CR2: 00007f56bbe93740 CR3: 000000001dd48000 CR4: 0000000000350ef0 [ 56.452327][ T8435] Call Trace: [ 56.455725][ T8435] ? kobject_put+0xb9/0x540 [ 56.460275][ T8435] ? sysfs_remove_group+0x170/0x170 [ 56.465559][ T8435] ? device_add+0x46d/0x2180 [ 56.470160][ T8435] blk_register_queue+0xda/0x570 [ 56.475253][ T8435] __device_add_disk+0x7b5/0xd10 [ 56.480292][ T8435] nbd_dev_add+0x73f/0x940 [ 56.484842][ T8435] nbd_genl_connect+0x551/0x1820 [ 56.489786][ T8435] ? nbd_start_device+0xd50/0xd50 [ 56.494895][ T8435] ? nla_get_range_signed+0x520/0x520 [ 56.500274][ T8435] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 56.506575][ T8435] ? genl_family_rcv_msg_attrs_parse.constprop.0+0x1b7/0x290 [ 56.513946][ T8435] ? genl_family_rcv_msg_attrs_parse.constprop.0+0xaf/0x290 [ 56.521286][ T8435] genl_family_rcv_msg_doit+0x228/0x320 [ 56.526897][ T8435] ? genl_family_rcv_msg_attrs_parse.constprop.0+0x290/0x290 [ 56.534270][ T8435] ? genl_op_from_small+0x23/0x3c0 [ 56.539521][ T8435] ? genl_get_cmd+0x3cf/0x480 [ 56.544441][ T8435] genl_rcv_msg+0x328/0x580 [ 56.549038][ T8435] ? genl_get_cmd+0x480/0x480 [ 56.553694][ T8435] ? nbd_start_device+0xd50/0xd50 [ 56.558761][ T8435] ? lock_release+0x720/0x720 [ 56.563437][ T8435] netlink_rcv_skb+0x153/0x420 [ 56.569096][ T8435] ? genl_get_cmd+0x480/0x480 [ 56.573776][ T8435] ? netlink_ack+0xa60/0xa60 [ 56.578448][ T8435] ? _copy_from_iter+0x12b/0x1320 [ 56.583475][ T8435] genl_rcv+0x24/0x40 [ 56.587495][ T8435] netlink_unicast+0x533/0x7d0 [ 56.592260][ T8435] ? netlink_attachskb+0x890/0x890 [ 56.597435][ T8435] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 56.603675][ T8435] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 56.609979][ T8435] ? __phys_addr_symbol+0x2c/0x70 [ 56.615243][ T8435] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 56.620952][ T8435] ? __check_object_size+0x16e/0x3f0 [ 56.626268][ T8435] netlink_sendmsg+0x86d/0xdb0 [ 56.631034][ T8435] ? netlink_unicast+0x7d0/0x7d0 [ 56.636186][ T8435] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 56.642426][ T8435] ? netlink_unicast+0x7d0/0x7d0 [ 56.647428][ T8435] sock_sendmsg+0xcf/0x120 [ 56.651838][ T8435] ____sys_sendmsg+0x6e8/0x810 [ 56.656855][ T8435] ? kernel_sendmsg+0x50/0x50 [ 56.661524][ T8435] ? do_recvmmsg+0x6d0/0x6d0 [ 56.666163][ T8435] ? lock_chain_count+0x20/0x20 [ 56.671007][ T8435] ? netlink_recvmsg+0x826/0xea0 [ 56.676015][ T8435] ___sys_sendmsg+0xf3/0x170 [ 56.680597][ T8435] ? sendmsg_copy_msghdr+0x160/0x160 [ 56.685953][ T8435] ? __lock_acquire+0x162f/0x54a0 [ 56.691033][ T8435] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 56.697824][ T8435] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 56.703807][ T8435] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 56.710100][ T8435] ? __fget_light+0x215/0x280 [ 56.714841][ T8435] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 56.721071][ T8435] __sys_sendmsg+0xe5/0x1b0 [ 56.725609][ T8435] ? __sys_sendmsg_sock+0x30/0x30 [ 56.730635][ T8435] ? syscall_enter_from_user_mode+0x21/0x70 [ 56.736820][ T8435] do_syscall_64+0x35/0xb0 [ 56.741249][ T8435] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 56.747221][ T8435] RIP: 0033:0x43fa49 [ 56.751119][ T8435] Code: 28 c3 e8 5a 14 00 00 66 2e 0f 1f 84 00 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 56.771024][ T8435] RSP: 002b:00007ffd8de69d18 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 56.779524][ T8435] RAX: ffffffffffffffda RBX: 00000000004004a0 RCX: 000000000043fa49 [ 56.787599][ T8435] RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000000000004 [ 56.795825][ T8435] RBP: 00000000004034b0 R08: 0000000000000000 R09: 00000000004004a0 [ 56.803807][ T8435] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000403540 [ 56.811872][ T8435] R13: 0000000000000000 R14: 00000000004ad018 R15: 00000000004004a0 [ 56.819974][ T8435] Kernel panic - not syncing: panic_on_warn set ... [ 56.826556][ T8435] CPU: 0 PID: 8435 Comm: syz-executor570 Not tainted 5.14.0-rc2-syzkaller #0 [ 56.835307][ T8435] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 56.845354][ T8435] Call Trace: [ 56.848620][ T8435] dump_stack_lvl+0xcd/0x134 [ 56.853206][ T8435] panic+0x306/0x73d [ 56.857091][ T8435] ? __warn_printk+0xf3/0xf3 [ 56.861678][ T8435] ? __warn.cold+0x1a/0x44 [ 56.866503][ T8435] ? internal_create_group+0x911/0xb20 [ 56.871958][ T8435] __warn.cold+0x35/0x44 [ 56.876192][ T8435] ? internal_create_group+0x911/0xb20 [ 56.881640][ T8435] report_bug+0x1bd/0x210 [ 56.885956][ T8435] handle_bug+0x3c/0x60 [ 56.890097][ T8435] exc_invalid_op+0x14/0x40 [ 56.894582][ T8435] asm_exc_invalid_op+0x12/0x20 [ 56.899416][ T8435] RIP: 0010:internal_create_group+0x911/0xb20 [ 56.905471][ T8435] Code: 0f 85 e8 f7 ff ff 41 bd ea ff ff ff e9 34 fd ff ff e8 53 3b 82 ff 48 8b 7c 24 08 e8 89 11 ff ff e9 20 fd ff ff e8 3f 3b 82 ff <0f> 0b 41 bd ea ff ff ff e9 0e fd ff ff e8 2d 3b 82 ff 48 8b 14 24 [ 56.925061][ T8435] RSP: 0018:ffffc900010ff2a8 EFLAGS: 00010293 [ 56.931111][ T8435] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 56.939062][ T8435] RDX: ffff8880284f0000 RSI: ffffffff81f34d91 RDI: 0000000000000003 [ 56.947015][ T8435] RBP: ffff88801fd7b9a8 R08: 0000000000000000 R09: ffff88801fd7b9af [ 56.954969][ T8435] R10: ffffffff81f3453e R11: 0000000000000000 R12: 0000000000000000 [ 56.962924][ T8435] R13: ffff8881455db770 R14: 0000000000000000 R15: ffff8881455db77c [ 56.970883][ T8435] ? internal_create_group+0xbe/0xb20 [ 56.976247][ T8435] ? internal_create_group+0x911/0xb20 [ 56.981697][ T8435] ? internal_create_group+0x911/0xb20 [ 56.987142][ T8435] ? kobject_put+0xb9/0x540 [ 56.991630][ T8435] ? sysfs_remove_group+0x170/0x170 [ 56.996899][ T8435] ? device_add+0x46d/0x2180 [ 57.001484][ T8435] blk_register_queue+0xda/0x570 [ 57.006409][ T8435] __device_add_disk+0x7b5/0xd10 [ 57.011338][ T8435] nbd_dev_add+0x73f/0x940 [ 57.015741][ T8435] nbd_genl_connect+0x551/0x1820 [ 57.020666][ T8435] ? nbd_start_device+0xd50/0xd50 [ 57.025677][ T8435] ? nla_get_range_signed+0x520/0x520 [ 57.031048][ T8435] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 57.037271][ T8435] ? genl_family_rcv_msg_attrs_parse.constprop.0+0x1b7/0x290 [ 57.044628][ T8435] ? genl_family_rcv_msg_attrs_parse.constprop.0+0xaf/0x290 [ 57.051905][ T8435] genl_family_rcv_msg_doit+0x228/0x320 [ 57.057524][ T8435] ? genl_family_rcv_msg_attrs_parse.constprop.0+0x290/0x290 [ 57.064888][ T8435] ? genl_op_from_small+0x23/0x3c0 [ 57.069986][ T8435] ? genl_get_cmd+0x3cf/0x480 [ 57.074652][ T8435] genl_rcv_msg+0x328/0x580 [ 57.079144][ T8435] ? genl_get_cmd+0x480/0x480 [ 57.083896][ T8435] ? nbd_start_device+0xd50/0xd50 [ 57.088994][ T8435] ? lock_release+0x720/0x720 [ 57.093658][ T8435] netlink_rcv_skb+0x153/0x420 [ 57.098407][ T8435] ? genl_get_cmd+0x480/0x480 [ 57.103071][ T8435] ? netlink_ack+0xa60/0xa60 [ 57.107652][ T8435] ? _copy_from_iter+0x12b/0x1320 [ 57.112670][ T8435] genl_rcv+0x24/0x40 [ 57.116636][ T8435] netlink_unicast+0x533/0x7d0 [ 57.121391][ T8435] ? netlink_attachskb+0x890/0x890 [ 57.126488][ T8435] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 57.132712][ T8435] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 57.138935][ T8435] ? __phys_addr_symbol+0x2c/0x70 [ 57.143946][ T8435] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 57.149648][ T8435] ? __check_object_size+0x16e/0x3f0 [ 57.154923][ T8435] netlink_sendmsg+0x86d/0xdb0 [ 57.159678][ T8435] ? netlink_unicast+0x7d0/0x7d0 [ 57.164602][ T8435] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 57.170827][ T8435] ? netlink_unicast+0x7d0/0x7d0 [ 57.175754][ T8435] sock_sendmsg+0xcf/0x120 [ 57.180155][ T8435] ____sys_sendmsg+0x6e8/0x810 [ 57.184904][ T8435] ? kernel_sendmsg+0x50/0x50 [ 57.189564][ T8435] ? do_recvmmsg+0x6d0/0x6d0 [ 57.194142][ T8435] ? lock_chain_count+0x20/0x20 [ 57.198974][ T8435] ? netlink_recvmsg+0x826/0xea0 [ 57.203903][ T8435] ___sys_sendmsg+0xf3/0x170 [ 57.208477][ T8435] ? sendmsg_copy_msghdr+0x160/0x160 [ 57.213751][ T8435] ? __lock_acquire+0x162f/0x54a0 [ 57.218766][ T8435] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 57.224730][ T8435] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 57.230698][ T8435] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 57.236921][ T8435] ? __fget_light+0x215/0x280 [ 57.241584][ T8435] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 57.247810][ T8435] __sys_sendmsg+0xe5/0x1b0 [ 57.252311][ T8435] ? __sys_sendmsg_sock+0x30/0x30 [ 57.257332][ T8435] ? syscall_enter_from_user_mode+0x21/0x70 [ 57.263221][ T8435] do_syscall_64+0x35/0xb0 [ 57.267623][ T8435] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 57.273506][ T8435] RIP: 0033:0x43fa49 [ 57.277382][ T8435] Code: 28 c3 e8 5a 14 00 00 66 2e 0f 1f 84 00 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 57.296972][ T8435] RSP: 002b:00007ffd8de69d18 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 57.305370][ T8435] RAX: ffffffffffffffda RBX: 00000000004004a0 RCX: 000000000043fa49 [ 57.313326][ T8435] RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000000000004 [ 57.321278][ T8435] RBP: 00000000004034b0 R08: 0000000000000000 R09: 00000000004004a0 [ 57.329231][ T8435] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000403540 [ 57.337183][ T8435] R13: 0000000000000000 R14: 00000000004ad018 R15: 00000000004004a0 [ 57.351493][ T8435] Kernel Offset: disabled [ 57.355870][ T8435] Rebooting in 86400 seconds..