[ OK ] Started Getty on tty2. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.213' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 50.853586][ T6528] sysfs: cannot create duplicate filename '/dev/block/43:0' [ 50.860952][ T6528] CPU: 1 PID: 6528 Comm: syz-executor605 Not tainted 5.15.0-rc5-syzkaller #0 [ 50.869969][ T6528] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 50.880037][ T6528] Call Trace: [ 50.883331][ T6528] dump_stack_lvl+0x201/0x2d8 [ 50.888130][ T6528] ? show_regs_print_info+0x12/0x12 [ 50.893326][ T6528] ? log_buf_vmcoreinfo_setup+0x498/0x498 [ 50.899049][ T6528] sysfs_warn_dup+0x8c/0xa0 [ 50.903548][ T6528] sysfs_do_create_link_sd+0xbe/0x100 [ 50.908908][ T6528] device_add+0x10ce/0x16d0 [ 50.913401][ T6528] ? virtual_device_parent+0x50/0x50 [ 50.918735][ T6528] ? blk_mq_unfreeze_queue+0xa0/0x100 [ 50.924095][ T6528] ? elevator_init_mq+0x3c1/0x530 [ 50.929107][ T6528] device_add_disk+0x316/0xe70 [ 50.933855][ T6528] ? __raw_spin_lock_init+0x44/0x100 [ 50.939126][ T6528] nbd_dev_add+0x730/0x940 [ 50.943532][ T6528] nbd_genl_connect+0xa66/0x1f50 [ 50.948461][ T6528] ? trace_raw_output_nbd_send_request+0xe0/0xe0 [ 50.954779][ T6528] ? __nla_parse+0x3c/0x50 [ 50.959177][ T6528] ? genl_family_rcv_msg_attrs_parse+0x1cd/0x290 [ 50.965491][ T6528] genl_rcv_msg+0x1032/0x1480 [ 50.970159][ T6528] ? genl_bind+0x360/0x360 [ 50.974561][ T6528] ? __lock_acquire+0x1382/0x2b00 [ 50.979581][ T6528] ? rcu_read_lock_sched_held+0x89/0x130 [ 50.985241][ T6528] ? trace_raw_output_nbd_send_request+0xe0/0xe0 [ 50.991563][ T6528] netlink_rcv_skb+0x200/0x470 [ 50.996312][ T6528] ? genl_bind+0x360/0x360 [ 51.000710][ T6528] ? netlink_ack+0xb70/0xb70 [ 51.005276][ T6528] ? __down_read_common+0x1b0/0x450 [ 51.010457][ T6528] ? up_read_non_owner+0x1c0/0x1c0 [ 51.015551][ T6528] ? netlink_deliver_tap+0x130/0x880 [ 51.020826][ T6528] genl_rcv+0x24/0x40 [ 51.024792][ T6528] netlink_unicast+0x814/0x9f0 [ 51.029568][ T6528] ? netlink_detachskb+0xa0/0xa0 [ 51.034490][ T6528] ? __virt_addr_valid+0x21b/0x2d0 [ 51.039587][ T6528] ? __phys_addr_symbol+0x2b/0x70 [ 51.044595][ T6528] ? __check_object_size+0x2f3/0x3f0 [ 51.049870][ T6528] ? bpf_lsm_netlink_send+0x5/0x10 [ 51.054967][ T6528] netlink_sendmsg+0xa29/0xe50 [ 51.059730][ T6528] ? netlink_getsockopt+0xa60/0xa60 [ 51.064915][ T6528] ? iovec_from_user+0x359/0x390 [ 51.070356][ T6528] ? __import_iovec+0x35f/0x500 [ 51.075190][ T6528] ? bpf_lsm_socket_sendmsg+0x5/0x10 [ 51.080456][ T6528] ? security_socket_sendmsg+0x9d/0xb0 [ 51.085895][ T6528] ? netlink_getsockopt+0xa60/0xa60 [ 51.091073][ T6528] ____sys_sendmsg+0x5b9/0x910 [ 51.095826][ T6528] ? __sys_sendmsg_sock+0x30/0x30 [ 51.100830][ T6528] ? __lock_acquire+0x1382/0x2b00 [ 51.105848][ T6528] __sys_sendmsg+0x36f/0x450 [ 51.110424][ T6528] ? ____sys_sendmsg+0x910/0x910 [ 51.115341][ T6528] ? rcu_read_lock_sched_held+0x89/0x130 [ 51.120970][ T6528] ? __context_tracking_exit+0x7a/0xd0 [ 51.126435][ T6528] ? lockdep_hardirqs_on_prepare+0x412/0x780 [ 51.132402][ T6528] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 51.138368][ T6528] ? syscall_enter_from_user_mode+0x2e/0x1b0 [ 51.144337][ T6528] ? lockdep_hardirqs_on+0x95/0x140 [ 51.149524][ T6528] ? syscall_enter_from_user_mode+0x2e/0x1b0 [ 51.155494][ T6528] do_syscall_64+0x44/0xd0 [ 51.159897][ T6528] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 51.165775][ T6528] RIP: 0033:0x7f78d54b7b49 [ 51.170176][ T6528] 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 [ 51.189763][ T6528] RSP: 002b:00007ffc82274848 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 51.198161][ T6528] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f78d54b7b49 [ 51.206117][ T6528] RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000000000003 [ 51.214078][ T6528] RBP: 00007f78d547b5b0 R08: 0000000000000000 R09: 0000000000000000 [ 51.222030][ T6528] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f78d547b640 [ 51.229985][ T6528] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 51.248221][ T6528] ------------[ cut here ]------------ [ 51.272016][ T6528] WARNING: CPU: 1 PID: 6528 at block/genhd.c:537 device_add_disk+0x825/0xe70 [ 51.280827][ T6528] Modules linked in: [ 51.290575][ T6528] CPU: 1 PID: 6528 Comm: syz-executor605 Not tainted 5.15.0-rc5-syzkaller #0 [ 51.300541][ T6528] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 51.315723][ T6528] RIP: 0010:device_add_disk+0x825/0xe70 [ 51.321315][ T6528] Code: c0 0f 85 66 05 00 00 48 8b 04 24 89 18 4c 89 e7 e8 00 96 fb ff 4c 89 e7 e8 c8 92 03 00 45 31 f6 e9 c9 fe ff ff e8 8b 48 83 fd <0f> 0b e9 b3 fe ff ff e8 7f 48 83 fd 0f 0b 41 be ea ff ff ff e9 ab [ 51.343124][ T6528] RSP: 0018:ffffc90002c0f190 EFLAGS: 00010293 [ 51.349222][ T6528] RAX: ffffffff84004115 RBX: 000000000000002b RCX: ffff888018e7b900 [ 51.359063][ T6528] RDX: 0000000000000000 RSI: 00000000ffffffef RDI: 0000000000000000 [ 51.368100][ T6528] RBP: ffff8880114a5280 R08: ffffffff84003fc1 R09: ffffed10173a64a2 [ 51.377138][ T6528] R10: ffffed10173a64a2 R11: 0000000000000000 R12: ffff8880159f9000 [ 51.385850][ T6528] R13: 00000000ffffffef R14: 1ffff11002b3f200 R15: 1ffff11002b3f201 [ 51.394534][ T6528] FS: 0000555557319300(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 51.404545][ T6528] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 51.411121][ T6528] CR2: 00007ff25ab3b000 CR3: 000000006f96f000 CR4: 00000000003506f0 [ 51.419259][ T6528] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 51.427528][ T6528] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 51.435569][ T6528] Call Trace: [ 51.438850][ T6528] ? __raw_spin_lock_init+0x44/0x100 [ 51.444203][ T6528] nbd_dev_add+0x730/0x940 [ 51.448628][ T6528] nbd_genl_connect+0xa66/0x1f50 [ 51.453632][ T6528] ? trace_raw_output_nbd_send_request+0xe0/0xe0 [ 51.459969][ T6528] ? __nla_parse+0x3c/0x50 [ 51.464452][ T6528] ? genl_family_rcv_msg_attrs_parse+0x1cd/0x290 [ 51.470786][ T6528] genl_rcv_msg+0x1032/0x1480 [ 51.475543][ T6528] ? genl_bind+0x360/0x360 [ 51.479975][ T6528] ? __lock_acquire+0x1382/0x2b00 [ 51.485081][ T6528] ? rcu_read_lock_sched_held+0x89/0x130 [ 51.490719][ T6528] ? trace_raw_output_nbd_send_request+0xe0/0xe0 [ 51.497144][ T6528] netlink_rcv_skb+0x200/0x470 [ 51.501982][ T6528] ? genl_bind+0x360/0x360 [ 51.506410][ T6528] ? netlink_ack+0xb70/0xb70 [ 51.510986][ T6528] ? __down_read_common+0x1b0/0x450 [ 51.516237][ T6528] ? up_read_non_owner+0x1c0/0x1c0 [ 51.521351][ T6528] ? netlink_deliver_tap+0x130/0x880 [ 51.526729][ T6528] genl_rcv+0x24/0x40 [ 51.530730][ T6528] netlink_unicast+0x814/0x9f0 [ 51.535562][ T6528] ? netlink_detachskb+0xa0/0xa0 [ 51.540497][ T6528] ? __virt_addr_valid+0x21b/0x2d0 [ 51.545661][ T6528] ? __phys_addr_symbol+0x2b/0x70 [ 51.550685][ T6528] ? __check_object_size+0x2f3/0x3f0 [ 51.556037][ T6528] ? bpf_lsm_netlink_send+0x5/0x10 [ 51.561157][ T6528] netlink_sendmsg+0xa29/0xe50 [ 51.566041][ T6528] ? netlink_getsockopt+0xa60/0xa60 [ 51.571247][ T6528] ? iovec_from_user+0x359/0x390 [ 51.576243][ T6528] ? __import_iovec+0x35f/0x500 [ 51.581095][ T6528] ? bpf_lsm_socket_sendmsg+0x5/0x10 [ 51.586520][ T6528] ? security_socket_sendmsg+0x9d/0xb0 [ 51.592100][ T6528] ? netlink_getsockopt+0xa60/0xa60 [ 51.597315][ T6528] ____sys_sendmsg+0x5b9/0x910 [ 51.602157][ T6528] ? __sys_sendmsg_sock+0x30/0x30 [ 51.607185][ T6528] ? __lock_acquire+0x1382/0x2b00 [ 51.612297][ T6528] __sys_sendmsg+0x36f/0x450 [ 51.616956][ T6528] ? ____sys_sendmsg+0x910/0x910 [ 51.621983][ T6528] ? rcu_read_lock_sched_held+0x89/0x130 [ 51.627635][ T6528] ? __context_tracking_exit+0x7a/0xd0 [ 51.633173][ T6528] ? lockdep_hardirqs_on_prepare+0x412/0x780 [ 51.639158][ T6528] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 51.645260][ T6528] ? syscall_enter_from_user_mode+0x2e/0x1b0 [ 51.651247][ T6528] ? lockdep_hardirqs_on+0x95/0x140 [ 51.656509][ T6528] ? syscall_enter_from_user_mode+0x2e/0x1b0 [ 51.662578][ T6528] do_syscall_64+0x44/0xd0 [ 51.667018][ T6528] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 51.672987][ T6528] RIP: 0033:0x7f78d54b7b49 [ 51.677416][ T6528] 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 [ 51.697096][ T6528] RSP: 002b:00007ffc82274848 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 51.705586][ T6528] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f78d54b7b49 [ 51.713710][ T6528] RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000000000003 [ 51.721707][ T6528] RBP: 00007f78d547b5b0 R08: 0000000000000000 R09: 0000000000000000 [ 51.729803][ T6528] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f78d547b640 [ 51.738011][ T6528] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 51.746160][ T6528] Kernel panic - not syncing: panic_on_warn set ... [ 51.752749][ T6528] CPU: 1 PID: 6528 Comm: syz-executor605 Not tainted 5.15.0-rc5-syzkaller #0 [ 51.761490][ T6528] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 51.771524][ T6528] Call Trace: [ 51.774788][ T6528] dump_stack_lvl+0x1dc/0x2d8 [ 51.779452][ T6528] ? show_regs_print_info+0x12/0x12 [ 51.784631][ T6528] ? log_buf_vmcoreinfo_setup+0x498/0x498 [ 51.790341][ T6528] panic+0x2d6/0x810 [ 51.794242][ T6528] ? __warn+0x13e/0x270 [ 51.798380][ T6528] ? nmi_panic+0x90/0x90 [ 51.802669][ T6528] __warn+0x26a/0x270 [ 51.806650][ T6528] ? device_add_disk+0x825/0xe70 [ 51.811637][ T6528] ? device_add_disk+0x825/0xe70 [ 51.816569][ T6528] report_bug+0x1b1/0x2e0 [ 51.820932][ T6528] handle_bug+0x3d/0x70 [ 51.825070][ T6528] exc_invalid_op+0x16/0x40 [ 51.829555][ T6528] asm_exc_invalid_op+0x12/0x20 [ 51.834389][ T6528] RIP: 0010:device_add_disk+0x825/0xe70 [ 51.839919][ T6528] Code: c0 0f 85 66 05 00 00 48 8b 04 24 89 18 4c 89 e7 e8 00 96 fb ff 4c 89 e7 e8 c8 92 03 00 45 31 f6 e9 c9 fe ff ff e8 8b 48 83 fd <0f> 0b e9 b3 fe ff ff e8 7f 48 83 fd 0f 0b 41 be ea ff ff ff e9 ab [ 51.859511][ T6528] RSP: 0018:ffffc90002c0f190 EFLAGS: 00010293 [ 51.865571][ T6528] RAX: ffffffff84004115 RBX: 000000000000002b RCX: ffff888018e7b900 [ 51.873527][ T6528] RDX: 0000000000000000 RSI: 00000000ffffffef RDI: 0000000000000000 [ 51.881485][ T6528] RBP: ffff8880114a5280 R08: ffffffff84003fc1 R09: ffffed10173a64a2 [ 51.889450][ T6528] R10: ffffed10173a64a2 R11: 0000000000000000 R12: ffff8880159f9000 [ 51.897422][ T6528] R13: 00000000ffffffef R14: 1ffff11002b3f200 R15: 1ffff11002b3f201 [ 51.905386][ T6528] ? device_add_disk+0x6d1/0xe70 [ 51.910319][ T6528] ? device_add_disk+0x825/0xe70 [ 51.915266][ T6528] ? __raw_spin_lock_init+0x44/0x100 [ 51.920558][ T6528] nbd_dev_add+0x730/0x940 [ 51.924971][ T6528] nbd_genl_connect+0xa66/0x1f50 [ 51.929908][ T6528] ? trace_raw_output_nbd_send_request+0xe0/0xe0 [ 51.936257][ T6528] ? __nla_parse+0x3c/0x50 [ 51.940672][ T6528] ? genl_family_rcv_msg_attrs_parse+0x1cd/0x290 [ 51.947013][ T6528] genl_rcv_msg+0x1032/0x1480 [ 51.951690][ T6528] ? genl_bind+0x360/0x360 [ 51.956193][ T6528] ? __lock_acquire+0x1382/0x2b00 [ 51.961219][ T6528] ? rcu_read_lock_sched_held+0x89/0x130 [ 51.966839][ T6528] ? trace_raw_output_nbd_send_request+0xe0/0xe0 [ 51.973167][ T6528] netlink_rcv_skb+0x200/0x470 [ 51.977920][ T6528] ? genl_bind+0x360/0x360 [ 51.982331][ T6528] ? netlink_ack+0xb70/0xb70 [ 51.986911][ T6528] ? __down_read_common+0x1b0/0x450 [ 51.992097][ T6528] ? up_read_non_owner+0x1c0/0x1c0 [ 51.997191][ T6528] ? netlink_deliver_tap+0x130/0x880 [ 52.002472][ T6528] genl_rcv+0x24/0x40 [ 52.006441][ T6528] netlink_unicast+0x814/0x9f0 [ 52.011202][ T6528] ? netlink_detachskb+0xa0/0xa0 [ 52.016122][ T6528] ? __virt_addr_valid+0x21b/0x2d0 [ 52.021221][ T6528] ? __phys_addr_symbol+0x2b/0x70 [ 52.026230][ T6528] ? __check_object_size+0x2f3/0x3f0 [ 52.031498][ T6528] ? bpf_lsm_netlink_send+0x5/0x10 [ 52.036618][ T6528] netlink_sendmsg+0xa29/0xe50 [ 52.041381][ T6528] ? netlink_getsockopt+0xa60/0xa60 [ 52.046571][ T6528] ? iovec_from_user+0x359/0x390 [ 52.051493][ T6528] ? __import_iovec+0x35f/0x500 [ 52.056331][ T6528] ? bpf_lsm_socket_sendmsg+0x5/0x10 [ 52.061607][ T6528] ? security_socket_sendmsg+0x9d/0xb0 [ 52.067050][ T6528] ? netlink_getsockopt+0xa60/0xa60 [ 52.072234][ T6528] ____sys_sendmsg+0x5b9/0x910 [ 52.076997][ T6528] ? __sys_sendmsg_sock+0x30/0x30 [ 52.082010][ T6528] ? __lock_acquire+0x1382/0x2b00 [ 52.087032][ T6528] __sys_sendmsg+0x36f/0x450 [ 52.091617][ T6528] ? ____sys_sendmsg+0x910/0x910 [ 52.096542][ T6528] ? rcu_read_lock_sched_held+0x89/0x130 [ 52.102180][ T6528] ? __context_tracking_exit+0x7a/0xd0 [ 52.107654][ T6528] ? lockdep_hardirqs_on_prepare+0x412/0x780 [ 52.113621][ T6528] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 52.119595][ T6528] ? syscall_enter_from_user_mode+0x2e/0x1b0 [ 52.125563][ T6528] ? lockdep_hardirqs_on+0x95/0x140 [ 52.130749][ T6528] ? syscall_enter_from_user_mode+0x2e/0x1b0 [ 52.136720][ T6528] do_syscall_64+0x44/0xd0 [ 52.141124][ T6528] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 52.147004][ T6528] RIP: 0033:0x7f78d54b7b49 [ 52.151409][ T6528] 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 [ 52.171000][ T6528] RSP: 002b:00007ffc82274848 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 52.179400][ T6528] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f78d54b7b49 [ 52.187361][ T6528] RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000000000003 [ 52.195320][ T6528] RBP: 00007f78d547b5b0 R08: 0000000000000000 R09: 0000000000000000 [ 52.203302][ T6528] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f78d547b640 [ 52.211269][ T6528] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 52.219607][ T6528] Kernel Offset: disabled [ 52.223999][ T6528] Rebooting in 86400 seconds..