[ 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 '10.128.10.46' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 56.965134][ T6506] sysfs: cannot create duplicate filename '/dev/block/43:0' [ 56.972795][ T6506] CPU: 0 PID: 6506 Comm: syz-executor526 Not tainted 5.15.0-rc2-syzkaller #0 [ 56.981533][ T6506] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 56.991622][ T6506] Call Trace: [ 56.994882][ T6506] dump_stack_lvl+0xcd/0x134 [ 56.999473][ T6506] sysfs_warn_dup.cold+0x1c/0x29 [ 57.004392][ T6506] sysfs_do_create_link_sd+0x11e/0x140 [ 57.010111][ T6506] sysfs_create_link+0x5f/0xc0 [ 57.015116][ T6506] device_add+0x1041/0x21b0 [ 57.019602][ T6506] ? __fw_devlink_link_to_suppliers+0x5e0/0x5e0 [ 57.025918][ T6506] device_add_disk+0x2ca/0xfc0 [ 57.030840][ T6506] nbd_dev_add+0x83e/0xb90 [ 57.035242][ T6506] nbd_genl_connect+0x11f3/0x1930 [ 57.040292][ T6506] ? nbd_start_device+0xd50/0xd50 [ 57.045304][ T6506] ? __nla_parse+0x3d/0x50 [ 57.049892][ T6506] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 57.056123][ T6506] ? genl_family_rcv_msg_attrs_parse.constprop.0+0x1b7/0x290 [ 57.063586][ T6506] ? genl_family_rcv_msg_attrs_parse.constprop.0+0xaf/0x290 [ 57.070859][ T6506] genl_family_rcv_msg_doit+0x228/0x320 [ 57.076482][ T6506] ? genl_family_rcv_msg_attrs_parse.constprop.0+0x290/0x290 [ 57.083838][ T6506] ? mutex_lock_io_nested+0x1150/0x1150 [ 57.089375][ T6506] ? genl_op_from_small+0x23/0x3c0 [ 57.094490][ T6506] ? genl_get_cmd+0x3cf/0x480 [ 57.099156][ T6506] genl_rcv_msg+0x328/0x580 [ 57.103737][ T6506] ? genl_get_cmd+0x480/0x480 [ 57.108493][ T6506] ? nbd_start_device+0xd50/0xd50 [ 57.113544][ T6506] ? lock_release+0x720/0x720 [ 57.118378][ T6506] netlink_rcv_skb+0x153/0x420 [ 57.124098][ T6506] ? genl_get_cmd+0x480/0x480 [ 57.129850][ T6506] ? netlink_ack+0xa60/0xa60 [ 57.134825][ T6506] ? netlink_deliver_tap+0x1b1/0xc30 [ 57.140152][ T6506] ? _copy_from_iter+0x12b/0x1320 [ 57.145911][ T6506] genl_rcv+0x24/0x40 [ 57.149994][ T6506] netlink_unicast+0x533/0x7d0 [ 57.156246][ T6506] ? netlink_attachskb+0x890/0x890 [ 57.161432][ T6506] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 57.167756][ T6506] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 57.174075][ T6506] ? __phys_addr_symbol+0x2c/0x70 [ 57.179098][ T6506] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 57.185100][ T6506] ? __check_object_size+0x16e/0x3f0 [ 57.190380][ T6506] netlink_sendmsg+0x86d/0xdb0 [ 57.195136][ T6506] ? netlink_unicast+0x7d0/0x7d0 [ 57.200151][ T6506] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 57.207254][ T6506] ? netlink_unicast+0x7d0/0x7d0 [ 57.212439][ T6506] sock_sendmsg+0xcf/0x120 [ 57.216846][ T6506] ____sys_sendmsg+0x6e8/0x810 [ 57.221776][ T6506] ? kernel_sendmsg+0x50/0x50 [ 57.226524][ T6506] ? do_recvmmsg+0x6d0/0x6d0 [ 57.231126][ T6506] ? lock_chain_count+0x20/0x20 [ 57.236137][ T6506] ? netlink_recvmsg+0x826/0xea0 [ 57.241483][ T6506] ___sys_sendmsg+0xf3/0x170 [ 57.246277][ T6506] ? sendmsg_copy_msghdr+0x160/0x160 [ 57.251557][ T6506] ? __lock_acquire+0x162f/0x54a0 [ 57.256595][ T6506] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 57.262561][ T6506] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 57.268536][ T6506] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 57.274767][ T6506] ? __fget_light+0x215/0x280 [ 57.279429][ T6506] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 57.285657][ T6506] __sys_sendmsg+0xe5/0x1b0 [ 57.290148][ T6506] ? __sys_sendmsg_sock+0x30/0x30 [ 57.295170][ T6506] ? syscall_enter_from_user_mode+0x21/0x70 [ 57.301055][ T6506] do_syscall_64+0x35/0xb0 [ 57.305459][ T6506] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 57.311340][ T6506] RIP: 0033:0x7f950cf95b49 [ 57.315740][ T6506] 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 [ 57.335703][ T6506] RSP: 002b:00007ffc857fc258 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 57.344205][ T6506] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f950cf95b49 [ 57.352187][ T6506] RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000000000003 [ 57.360152][ T6506] RBP: 00007f950cf595b0 R08: 0000000000000000 R09: 0000000000000000 [ 57.368111][ T6506] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f950cf59640 [ 57.376067][ T6506] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 57.388543][ T6506] ------------[ cut here ]------------ [ 57.394121][ T6506] WARNING: CPU: 1 PID: 6506 at block/genhd.c:537 device_add_disk+0x60b/0xfc0 [ 57.403280][ T6506] Modules linked in: [ 57.407347][ T6506] CPU: 1 PID: 6506 Comm: syz-executor526 Not tainted 5.15.0-rc2-syzkaller #0 [ 57.416489][ T6506] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 57.426830][ T6506] RIP: 0010:device_add_disk+0x60b/0xfc0 [ 57.432586][ T6506] Code: 8e ec 07 00 00 8b 5d 00 bf 03 01 00 00 89 de e8 8b 40 ad fd 81 fb 03 01 00 00 0f 85 69 fd ff ff e9 22 fd ff ff e8 35 39 ad fd <0f> 0b 41 bc 01 00 00 00 e9 6a fd ff ff e8 23 39 ad fd 0f 0b 41 bc [ 57.453319][ T6506] RSP: 0018:ffffc9000116f458 EFLAGS: 00010293 [ 57.459446][ T6506] RAX: 0000000000000000 RBX: 000000000000002b RCX: 0000000000000000 [ 57.467555][ T6506] RDX: ffff888073f01c80 RSI: ffffffff83c8d28b RDI: 0000000000000003 [ 57.475569][ T6506] RBP: ffff8880257a9800 R08: 0000000000000103 R09: ffff8880b9d32a0b [ 57.483533][ T6506] R10: ffffffff83c8cf9c R11: 0000000000000000 R12: 00000000ffffffef [ 57.491545][ T6506] R13: ffff8880257a9880 R14: ffff8880257a9808 R15: ffff8881457dc6c0 [ 57.499564][ T6506] FS: 0000555557031300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 57.508555][ T6506] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 57.515209][ T6506] CR2: 0000000020000040 CR3: 000000007127c000 CR4: 0000000000350ee0 [ 57.523196][ T6506] Call Trace: [ 57.526539][ T6506] nbd_dev_add+0x83e/0xb90 [ 57.530970][ T6506] nbd_genl_connect+0x11f3/0x1930 [ 57.536067][ T6506] ? nbd_start_device+0xd50/0xd50 [ 57.541102][ T6506] ? __nla_parse+0x3d/0x50 [ 57.545852][ T6506] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 57.552200][ T6506] ? genl_family_rcv_msg_attrs_parse.constprop.0+0x1b7/0x290 [ 57.559658][ T6506] ? genl_family_rcv_msg_attrs_parse.constprop.0+0xaf/0x290 [ 57.567010][ T6506] genl_family_rcv_msg_doit+0x228/0x320 [ 57.572557][ T6506] ? genl_family_rcv_msg_attrs_parse.constprop.0+0x290/0x290 [ 57.579965][ T6506] ? mutex_lock_io_nested+0x1150/0x1150 [ 57.585578][ T6506] ? genl_op_from_small+0x23/0x3c0 [ 57.590682][ T6506] ? genl_get_cmd+0x3cf/0x480 [ 57.595390][ T6506] genl_rcv_msg+0x328/0x580 [ 57.599890][ T6506] ? genl_get_cmd+0x480/0x480 [ 57.604701][ T6506] ? nbd_start_device+0xd50/0xd50 [ 57.609826][ T6506] ? lock_release+0x720/0x720 [ 57.614542][ T6506] netlink_rcv_skb+0x153/0x420 [ 57.619302][ T6506] ? genl_get_cmd+0x480/0x480 [ 57.623964][ T6506] ? netlink_ack+0xa60/0xa60 [ 57.628604][ T6506] ? netlink_deliver_tap+0x1b1/0xc30 [ 57.633889][ T6506] ? _copy_from_iter+0x12b/0x1320 [ 57.638959][ T6506] genl_rcv+0x24/0x40 [ 57.642938][ T6506] netlink_unicast+0x533/0x7d0 [ 57.647781][ T6506] ? netlink_attachskb+0x890/0x890 [ 57.652894][ T6506] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 57.659302][ T6506] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 57.665783][ T6506] ? __phys_addr_symbol+0x2c/0x70 [ 57.670827][ T6506] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 57.676598][ T6506] ? __check_object_size+0x16e/0x3f0 [ 57.681882][ T6506] netlink_sendmsg+0x86d/0xdb0 [ 57.686730][ T6506] ? netlink_unicast+0x7d0/0x7d0 [ 57.691693][ T6506] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 57.698331][ T6506] ? netlink_unicast+0x7d0/0x7d0 [ 57.703568][ T6506] sock_sendmsg+0xcf/0x120 [ 57.708042][ T6506] ____sys_sendmsg+0x6e8/0x810 [ 57.712879][ T6506] ? kernel_sendmsg+0x50/0x50 [ 57.717652][ T6506] ? do_recvmmsg+0x6d0/0x6d0 [ 57.722246][ T6506] ? lock_chain_count+0x20/0x20 [ 57.727162][ T6506] ? netlink_recvmsg+0x826/0xea0 [ 57.732187][ T6506] ___sys_sendmsg+0xf3/0x170 [ 57.736899][ T6506] ? sendmsg_copy_msghdr+0x160/0x160 [ 57.742195][ T6506] ? __lock_acquire+0x162f/0x54a0 [ 57.747359][ T6506] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 57.753437][ T6506] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 57.759460][ T6506] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 57.765758][ T6506] ? __fget_light+0x215/0x280 [ 57.770427][ T6506] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 57.776694][ T6506] __sys_sendmsg+0xe5/0x1b0 [ 57.781543][ T6506] ? __sys_sendmsg_sock+0x30/0x30 [ 57.786657][ T6506] ? syscall_enter_from_user_mode+0x21/0x70 [ 57.792561][ T6506] do_syscall_64+0x35/0xb0 [ 57.797129][ T6506] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 57.803026][ T6506] RIP: 0033:0x7f950cf95b49 [ 57.807499][ T6506] 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 [ 57.827420][ T6506] RSP: 002b:00007ffc857fc258 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 57.835882][ T6506] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f950cf95b49 [ 57.843849][ T6506] RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000000000003 [ 57.851889][ T6506] RBP: 00007f950cf595b0 R08: 0000000000000000 R09: 0000000000000000 [ 57.859893][ T6506] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f950cf59640 [ 57.868213][ T6506] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 57.876339][ T6506] Kernel panic - not syncing: panic_on_warn set ... [ 57.882915][ T6506] CPU: 1 PID: 6506 Comm: syz-executor526 Not tainted 5.15.0-rc2-syzkaller #0 [ 57.891753][ T6506] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 57.901872][ T6506] Call Trace: [ 57.905216][ T6506] dump_stack_lvl+0xcd/0x134 [ 57.909791][ T6506] panic+0x2b0/0x6dd [ 57.913659][ T6506] ? __warn_printk+0xf3/0xf3 [ 57.918235][ T6506] ? __warn.cold+0x1a/0x44 [ 57.922633][ T6506] ? device_add_disk+0x60b/0xfc0 [ 57.927547][ T6506] __warn.cold+0x35/0x44 [ 57.931766][ T6506] ? device_add_disk+0x60b/0xfc0 [ 57.936766][ T6506] report_bug+0x1bd/0x210 [ 57.941075][ T6506] handle_bug+0x3c/0x60 [ 57.945217][ T6506] exc_invalid_op+0x14/0x40 [ 57.949718][ T6506] asm_exc_invalid_op+0x12/0x20 [ 57.954548][ T6506] RIP: 0010:device_add_disk+0x60b/0xfc0 [ 57.960176][ T6506] Code: 8e ec 07 00 00 8b 5d 00 bf 03 01 00 00 89 de e8 8b 40 ad fd 81 fb 03 01 00 00 0f 85 69 fd ff ff e9 22 fd ff ff e8 35 39 ad fd <0f> 0b 41 bc 01 00 00 00 e9 6a fd ff ff e8 23 39 ad fd 0f 0b 41 bc [ 57.979846][ T6506] RSP: 0018:ffffc9000116f458 EFLAGS: 00010293 [ 57.985890][ T6506] RAX: 0000000000000000 RBX: 000000000000002b RCX: 0000000000000000 [ 57.993838][ T6506] RDX: ffff888073f01c80 RSI: ffffffff83c8d28b RDI: 0000000000000003 [ 58.001786][ T6506] RBP: ffff8880257a9800 R08: 0000000000000103 R09: ffff8880b9d32a0b [ 58.009734][ T6506] R10: ffffffff83c8cf9c R11: 0000000000000000 R12: 00000000ffffffef [ 58.017855][ T6506] R13: ffff8880257a9880 R14: ffff8880257a9808 R15: ffff8881457dc6c0 [ 58.025896][ T6506] ? device_add_disk+0x31c/0xfc0 [ 58.030822][ T6506] ? device_add_disk+0x60b/0xfc0 [ 58.035741][ T6506] ? device_add_disk+0x60b/0xfc0 [ 58.040661][ T6506] nbd_dev_add+0x83e/0xb90 [ 58.045063][ T6506] nbd_genl_connect+0x11f3/0x1930 [ 58.050081][ T6506] ? nbd_start_device+0xd50/0xd50 [ 58.055084][ T6506] ? __nla_parse+0x3d/0x50 [ 58.059482][ T6506] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 58.065874][ T6506] ? genl_family_rcv_msg_attrs_parse.constprop.0+0x1b7/0x290 [ 58.073239][ T6506] ? genl_family_rcv_msg_attrs_parse.constprop.0+0xaf/0x290 [ 58.080598][ T6506] genl_family_rcv_msg_doit+0x228/0x320 [ 58.086138][ T6506] ? genl_family_rcv_msg_attrs_parse.constprop.0+0x290/0x290 [ 58.093574][ T6506] ? mutex_lock_io_nested+0x1150/0x1150 [ 58.099098][ T6506] ? genl_op_from_small+0x23/0x3c0 [ 58.104189][ T6506] ? genl_get_cmd+0x3cf/0x480 [ 58.108846][ T6506] genl_rcv_msg+0x328/0x580 [ 58.113325][ T6506] ? genl_get_cmd+0x480/0x480 [ 58.117979][ T6506] ? nbd_start_device+0xd50/0xd50 [ 58.123250][ T6506] ? lock_release+0x720/0x720 [ 58.127922][ T6506] netlink_rcv_skb+0x153/0x420 [ 58.132667][ T6506] ? genl_get_cmd+0x480/0x480 [ 58.137320][ T6506] ? netlink_ack+0xa60/0xa60 [ 58.142063][ T6506] ? netlink_deliver_tap+0x1b1/0xc30 [ 58.147322][ T6506] ? _copy_from_iter+0x12b/0x1320 [ 58.152515][ T6506] genl_rcv+0x24/0x40 [ 58.156475][ T6506] netlink_unicast+0x533/0x7d0 [ 58.161232][ T6506] ? netlink_attachskb+0x890/0x890 [ 58.166325][ T6506] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 58.172631][ T6506] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 58.178939][ T6506] ? __phys_addr_symbol+0x2c/0x70 [ 58.184043][ T6506] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 58.189740][ T6506] ? __check_object_size+0x16e/0x3f0 [ 58.195008][ T6506] netlink_sendmsg+0x86d/0xdb0 [ 58.200228][ T6506] ? netlink_unicast+0x7d0/0x7d0 [ 58.205166][ T6506] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 58.211854][ T6506] ? netlink_unicast+0x7d0/0x7d0 [ 58.217093][ T6506] sock_sendmsg+0xcf/0x120 [ 58.221494][ T6506] ____sys_sendmsg+0x6e8/0x810 [ 58.226457][ T6506] ? kernel_sendmsg+0x50/0x50 [ 58.231110][ T6506] ? do_recvmmsg+0x6d0/0x6d0 [ 58.236274][ T6506] ? lock_chain_count+0x20/0x20 [ 58.241103][ T6506] ? netlink_recvmsg+0x826/0xea0 [ 58.246023][ T6506] ___sys_sendmsg+0xf3/0x170 [ 58.250766][ T6506] ? sendmsg_copy_msghdr+0x160/0x160 [ 58.256033][ T6506] ? __lock_acquire+0x162f/0x54a0 [ 58.261043][ T6506] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 58.267308][ T6506] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 58.273275][ T6506] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 58.279602][ T6506] ? __fget_light+0x215/0x280 [ 58.284263][ T6506] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 58.290591][ T6506] __sys_sendmsg+0xe5/0x1b0 [ 58.295075][ T6506] ? __sys_sendmsg_sock+0x30/0x30 [ 58.300092][ T6506] ? syscall_enter_from_user_mode+0x21/0x70 [ 58.305969][ T6506] do_syscall_64+0x35/0xb0 [ 58.310366][ T6506] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 58.316236][ T6506] RIP: 0033:0x7f950cf95b49 [ 58.320634][ T6506] 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 [ 58.340305][ T6506] RSP: 002b:00007ffc857fc258 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 58.348699][ T6506] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f950cf95b49 [ 58.357080][ T6506] RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000000000003 [ 58.365032][ T6506] RBP: 00007f950cf595b0 R08: 0000000000000000 R09: 0000000000000000 [ 58.372982][ T6506] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f950cf59640 [ 58.381147][ T6506] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 58.390170][ T6506] Kernel Offset: disabled [ 58.394540][ T6506] Rebooting in 86400 seconds..