Warning: Permanently added '10.128.0.23' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 70.315975][ T8469] sysfs: cannot create duplicate filename '/devices/virtual/bdi/7:0' [ 70.324299][ T8469] CPU: 1 PID: 8469 Comm: syz-executor181 Not tainted 5.11.0-rc4-syzkaller #0 [ 70.333098][ T8469] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 70.343168][ T8469] Call Trace: [ 70.346447][ T8469] dump_stack+0x107/0x163 [ 70.350788][ T8469] sysfs_warn_dup.cold+0x1c/0x29 [ 70.355739][ T8469] sysfs_create_dir_ns+0x233/0x290 [ 70.360843][ T8469] ? sysfs_create_mount_point+0xb0/0xb0 [ 70.366401][ T8469] ? rwlock_bug.part.0+0x90/0x90 [ 70.371366][ T8469] ? class_dir_child_ns_type+0x9/0x60 [ 70.376746][ T8469] kobject_add_internal+0x2d2/0xa60 [ 70.381957][ T8469] kobject_add+0x150/0x1c0 [ 70.386366][ T8469] ? kset_create_and_add+0x190/0x190 [ 70.391653][ T8469] device_add+0x36a/0x1d90 [ 70.396089][ T8469] ? __fw_devlink_link_to_suppliers+0x5e0/0x5e0 [ 70.402343][ T8469] device_create_groups_vargs+0x203/0x280 [ 70.408075][ T8469] device_create+0xdf/0x120 [ 70.412600][ T8469] ? device_create_groups_vargs+0x280/0x280 [ 70.418506][ T8469] ? pointer+0x930/0x930 [ 70.422764][ T8469] ? vsnprintf+0x281/0x14f0 [ 70.427259][ T8469] bdi_register_va.part.0+0x9c/0x800 [ 70.432534][ T8469] ? cgwb_kill+0x450/0x450 [ 70.436959][ T8469] ? _raw_spin_unlock_irqrestore+0x2f/0x50 [ 70.442782][ T8469] ? __wake_up_common_lock+0xde/0x130 [ 70.448164][ T8469] bdi_register+0x12a/0x140 [ 70.452660][ T8469] ? bdi_register_va.part.0+0x800/0x800 [ 70.458297][ T8469] __device_add_disk+0xbc5/0x12b0 [ 70.463330][ T8469] ? sprintf+0xc0/0x100 [ 70.467476][ T8469] ? blk_alloc_devt+0x240/0x240 [ 70.472317][ T8469] ? __init_waitqueue_head+0x97/0x110 [ 70.477707][ T8469] ? pm_runtime_init+0x2cf/0x3b0 [ 70.482642][ T8469] ? lockdep_init_map_waits+0x26a/0x720 [ 70.488222][ T8469] loop_add+0x639/0x8c0 [ 70.492375][ T8469] loop_control_ioctl+0x16c/0x470 [ 70.497391][ T8469] ? loop_lookup+0x1d0/0x1d0 [ 70.501982][ T8469] ? __ia32_compat_sys_openat+0x13f/0x1f0 [ 70.507717][ T8469] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 70.513966][ T8469] ? loop_lookup+0x1d0/0x1d0 [ 70.518552][ T8469] __do_compat_sys_ioctl+0x1d3/0x230 [ 70.523848][ T8469] __do_fast_syscall_32+0x56/0x80 [ 70.528872][ T8469] do_fast_syscall_32+0x2f/0x70 [ 70.533718][ T8469] entry_SYSENTER_compat_after_hwframe+0x4d/0x5c [ 70.540133][ T8469] RIP: 0023:0xf7fdc549 [ 70.544204][ T8469] Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 [ 70.563817][ T8469] RSP: 002b:00000000ff8295ac EFLAGS: 00000213 ORIG_RAX: 0000000000000036 [ 70.572230][ T8469] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000004c80 [ 70.580214][ T8469] RDX: 0000000000200000 RSI: 00000000080ea078 RDI: 00000000ff829600 [ 70.588196][ T8469] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 70.596155][ T8469] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 70.604125][ T8469] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 70.615130][ T8469] kobject_add_internal failed for 7:0 with -EEXIST, don't try to register things with the same name in the same directory. [ 70.629757][ T8469] ------------[ cut here ]------------ [ 70.635498][ T8469] WARNING: CPU: 1 PID: 8469 at block/genhd.c:748 __device_add_disk+0xfdc/0x12b0 [ 70.645144][ T8469] Modules linked in: [ 70.649082][ T8469] CPU: 0 PID: 8469 Comm: syz-executor181 Not tainted 5.11.0-rc4-syzkaller #0 [ 70.658023][ T8469] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 70.668208][ T8469] RIP: 0010:__device_add_disk+0xfdc/0x12b0 [ 70.674142][ T8469] Code: f1 ff ff e8 d6 4f c4 fd 0f 0b e9 12 f7 ff ff 48 89 7c 24 20 e8 c5 4f c4 fd 0f 0b 48 8b 7c 24 20 e9 d6 f4 ff ff e8 b4 4f c4 fd <0f> 0b e9 f7 fb ff ff 4c 89 ef e8 05 10 07 fe e9 7d f1 ff ff 48 8b [ 70.693992][ T8469] RSP: 0018:ffffc900014bfcd0 EFLAGS: 00010293 [ 70.700097][ T8469] RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000 [ 70.708209][ T8469] RDX: ffff88801ee6d340 RSI: ffffffff83ae7a0c RDI: 0000000000000003 [ 70.716387][ T8469] RBP: ffff888020c86c00 R08: 0000000000000000 R09: ffffffff8ed317f7 [ 70.724490][ T8469] R10: ffffffff83ae7601 R11: 0000000000000000 R12: 00000000ffffffef [ 70.732574][ T8469] R13: ffff888020c86c58 R14: ffff888018668c50 R15: ffff888027de8000 [ 70.740651][ T8469] FS: 0000000000000000(0000) GS:ffff8880b9e00000(0063) knlGS:0000000009587840 [ 70.749716][ T8469] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 70.757199][ T8469] CR2: 00007f736676f6c0 CR3: 00000000230ce000 CR4: 00000000001506f0 [ 70.765369][ T8469] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 70.773509][ T8469] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 70.781535][ T8469] Call Trace: [ 70.784962][ T8469] ? sprintf+0xc0/0x100 [ 70.789168][ T8469] ? blk_alloc_devt+0x240/0x240 [ 70.794188][ T8469] ? __init_waitqueue_head+0x97/0x110 [ 70.799593][ T8469] ? pm_runtime_init+0x2cf/0x3b0 [ 70.804701][ T8469] ? lockdep_init_map_waits+0x26a/0x720 [ 70.810282][ T8469] loop_add+0x639/0x8c0 [ 70.814577][ T8469] loop_control_ioctl+0x16c/0x470 [ 70.819646][ T8469] ? loop_lookup+0x1d0/0x1d0 [ 70.824327][ T8469] ? __ia32_compat_sys_openat+0x13f/0x1f0 [ 70.830088][ T8469] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 70.836495][ T8469] ? loop_lookup+0x1d0/0x1d0 [ 70.841107][ T8469] __do_compat_sys_ioctl+0x1d3/0x230 [ 70.846492][ T8469] __do_fast_syscall_32+0x56/0x80 [ 70.851549][ T8469] do_fast_syscall_32+0x2f/0x70 [ 70.856539][ T8469] entry_SYSENTER_compat_after_hwframe+0x4d/0x5c [ 70.862967][ T8469] RIP: 0023:0xf7fdc549 [ 70.867071][ T8469] Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 [ 70.887910][ T8469] RSP: 002b:00000000ff8295ac EFLAGS: 00000213 ORIG_RAX: 0000000000000036 [ 70.896499][ T8469] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000004c80 [ 70.904612][ T8469] RDX: 0000000000200000 RSI: 00000000080ea078 RDI: 00000000ff829600 [ 70.912665][ T8469] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 70.920677][ T8469] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 70.928793][ T8469] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 70.936890][ T8469] Kernel panic - not syncing: panic_on_warn set ... [ 70.943492][ T8469] CPU: 0 PID: 8469 Comm: syz-executor181 Not tainted 5.11.0-rc4-syzkaller #0 [ 70.952271][ T8469] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 70.962355][ T8469] Call Trace: [ 70.965652][ T8469] dump_stack+0x107/0x163 [ 70.969984][ T8469] panic+0x306/0x73d [ 70.973891][ T8469] ? __warn_printk+0xf3/0xf3 [ 70.978485][ T8469] ? __warn.cold+0x1a/0x44 [ 70.982902][ T8469] ? __device_add_disk+0xfdc/0x12b0 [ 70.988112][ T8469] __warn.cold+0x35/0x44 [ 70.992358][ T8469] ? __device_add_disk+0xfdc/0x12b0 [ 70.997564][ T8469] report_bug+0x1bd/0x210 [ 71.001892][ T8469] handle_bug+0x3c/0x60 [ 71.006043][ T8469] exc_invalid_op+0x14/0x40 [ 71.010537][ T8469] asm_exc_invalid_op+0x12/0x20 [ 71.015406][ T8469] RIP: 0010:__device_add_disk+0xfdc/0x12b0 [ 71.021224][ T8469] Code: f1 ff ff e8 d6 4f c4 fd 0f 0b e9 12 f7 ff ff 48 89 7c 24 20 e8 c5 4f c4 fd 0f 0b 48 8b 7c 24 20 e9 d6 f4 ff ff e8 b4 4f c4 fd <0f> 0b e9 f7 fb ff ff 4c 89 ef e8 05 10 07 fe e9 7d f1 ff ff 48 8b [ 71.040839][ T8469] RSP: 0018:ffffc900014bfcd0 EFLAGS: 00010293 [ 71.046911][ T8469] RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000 [ 71.054892][ T8469] RDX: ffff88801ee6d340 RSI: ffffffff83ae7a0c RDI: 0000000000000003 [ 71.062876][ T8469] RBP: ffff888020c86c00 R08: 0000000000000000 R09: ffffffff8ed317f7 [ 71.070853][ T8469] R10: ffffffff83ae7601 R11: 0000000000000000 R12: 00000000ffffffef [ 71.078828][ T8469] R13: ffff888020c86c58 R14: ffff888018668c50 R15: ffff888027de8000 [ 71.086800][ T8469] ? __device_add_disk+0xbd1/0x12b0 [ 71.092061][ T8469] ? __device_add_disk+0xfdc/0x12b0 [ 71.097288][ T8469] ? sprintf+0xc0/0x100 [ 71.101448][ T8469] ? blk_alloc_devt+0x240/0x240 [ 71.106296][ T8469] ? __init_waitqueue_head+0x97/0x110 [ 71.111666][ T8469] ? pm_runtime_init+0x2cf/0x3b0 [ 71.116618][ T8469] ? lockdep_init_map_waits+0x26a/0x720 [ 71.122167][ T8469] loop_add+0x639/0x8c0 [ 71.126334][ T8469] loop_control_ioctl+0x16c/0x470 [ 71.131356][ T8469] ? loop_lookup+0x1d0/0x1d0 [ 71.135953][ T8469] ? __ia32_compat_sys_openat+0x13f/0x1f0 [ 71.141685][ T8469] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 71.147966][ T8469] ? loop_lookup+0x1d0/0x1d0 [ 71.152555][ T8469] __do_compat_sys_ioctl+0x1d3/0x230 [ 71.157858][ T8469] __do_fast_syscall_32+0x56/0x80 [ 71.162889][ T8469] do_fast_syscall_32+0x2f/0x70 [ 71.167753][ T8469] entry_SYSENTER_compat_after_hwframe+0x4d/0x5c [ 71.174080][ T8469] RIP: 0023:0xf7fdc549 [ 71.178160][ T8469] Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 [ 71.197948][ T8469] RSP: 002b:00000000ff8295ac EFLAGS: 00000213 ORIG_RAX: 0000000000000036 [ 71.206376][ T8469] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000004c80 [ 71.214359][ T8469] RDX: 0000000000200000 RSI: 00000000080ea078 RDI: 00000000ff829600 [ 71.222347][ T8469] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 71.230338][ T8469] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 71.238333][ T8469] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 71.247155][ T8469] Kernel Offset: disabled [ 71.251649][ T8469] Rebooting in 86400 seconds..