Warning: Permanently added '10.128.0.206' (ECDSA) to the list of known hosts. executing program [ 57.372490][ T8412] sysfs: cannot create duplicate filename '/devices/virtual/bdi/7:0' [ 57.381394][ T8412] CPU: 0 PID: 8412 Comm: syz-executor653 Not tainted 5.13.0-rc2-syzkaller #0 [ 57.390573][ T8412] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 57.401009][ T8412] Call Trace: [ 57.404653][ T8412] dump_stack+0x202/0x31e [ 57.409003][ T8412] ? show_regs_print_info+0x12/0x12 [ 57.414414][ T8412] ? log_buf_vmcoreinfo_setup+0x498/0x498 [ 57.420159][ T8412] ? kmem_cache_alloc_trace+0x96/0x340 [ 57.426093][ T8412] sysfs_create_dir_ns+0x27c/0x2f0 [ 57.431670][ T8412] ? sysfs_warn_dup+0xa0/0xa0 [ 57.436898][ T8412] ? do_raw_spin_unlock+0x134/0x8a0 [ 57.443330][ T8412] kobject_add_internal+0x418/0xb50 [ 57.448665][ T8412] kobject_add+0x138/0x200 [ 57.453583][ T8412] ? kobject_init+0x1d0/0x1d0 [ 57.458731][ T8412] ? get_device_parent+0x2cd/0x430 [ 57.464150][ T8412] device_add+0x504/0x1670 [ 57.468807][ T8412] ? virtual_device_parent+0x50/0x50 [ 57.474222][ T8412] ? kfree+0x2d/0x2d0 [ 57.478598][ T8412] ? memcpy+0x3c/0x60 [ 57.483412][ T8412] device_create+0x241/0x2d0 [ 57.488863][ T8412] ? vsnprintf+0x19e/0x1d60 [ 57.493812][ T8412] ? root_device_unregister+0x100/0x100 [ 57.499612][ T8412] ? elevator_init_mq+0x344/0x480 [ 57.504663][ T8412] ? __lock_acquire+0x6040/0x6040 [ 57.509981][ T8412] bdi_register_va+0x86/0x530 [ 57.515080][ T8412] ? remove_wait_queue+0x130/0x130 [ 57.520443][ T8412] bdi_register+0xc2/0x110 [ 57.525050][ T8412] ? __device_add_disk+0x5c9/0x10d0 [ 57.530837][ T8412] ? trace_writeback_bdi_register+0x260/0x260 [ 57.537227][ T8412] ? blk_mq_unfreeze_queue+0xa0/0x100 [ 57.543248][ T8412] ? elevator_init_mq+0x356/0x480 [ 57.548807][ T8412] __device_add_disk+0x679/0x10d0 [ 57.554195][ T8412] loop_add+0x604/0x7e0 [ 57.558875][ T8412] loop_control_ioctl+0x4ca/0x770 [ 57.564369][ T8412] ? xor_init+0x60/0x60 [ 57.568638][ T8412] ? print_irqtrace_events+0x220/0x220 [ 57.575055][ T8412] ? vtime_user_exit+0x2b2/0x3e0 [ 57.580365][ T8412] ? bpf_lsm_file_ioctl+0x5/0x10 [ 57.586071][ T8412] ? security_file_ioctl+0x9d/0xb0 [ 57.591586][ T8412] ? xor_init+0x60/0x60 [ 57.595964][ T8412] __se_sys_ioctl+0xfb/0x170 [ 57.600992][ T8412] do_syscall_64+0x3f/0xb0 [ 57.605554][ T8412] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 57.611662][ T8412] RIP: 0033:0x43ee49 [ 57.615752][ T8412] Code: 28 c3 e8 2a 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 [ 57.637027][ T8412] RSP: 002b:00007ffdd70debb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 57.646653][ T8412] RAX: ffffffffffffffda RBX: 0000000000400488 RCX: 000000000043ee49 [ 57.655367][ T8412] RDX: 0000000000200000 RSI: 0000000000004c80 RDI: 0000000000000003 [ 57.663469][ T8412] RBP: 0000000000402e30 R08: 0000000000000000 R09: 0000000000400488 [ 57.671792][ T8412] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402ec0 [ 57.681400][ T8412] R13: 0000000000000000 R14: 00000000004ac018 R15: 0000000000400488 [ 57.692245][ T8412] kobject_add_internal failed for 7:0 with -EEXIST, don't try to register things with the same name in the same directory. [ 57.707237][ T8412] ------------[ cut here ]------------ [ 57.713393][ T8412] WARNING: CPU: 1 PID: 8412 at block/genhd.c:551 __device_add_disk+0xe00/0x10d0 [ 57.723175][ T8412] Modules linked in: [ 57.728010][ T8412] CPU: 1 PID: 8412 Comm: syz-executor653 Not tainted 5.13.0-rc2-syzkaller #0 [ 57.737299][ T8412] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 57.749070][ T8412] RIP: 0010:__device_add_disk+0xe00/0x10d0 [ 57.755793][ T8412] Code: ff e8 e4 9a 94 fd 0f 0b e9 6f fe ff ff e8 d8 9a 94 fd 0f 0b e9 71 f3 ff ff e8 cc 9a 94 fd 0f 0b e9 c7 f9 ff ff e8 c0 9a 94 fd <0f> 0b e9 8a f8 ff ff e8 b4 9a 94 fd 0f 0b e9 e3 f2 ff ff e8 a8 9a [ 57.776065][ T8412] RSP: 0018:ffffc90000fdfce8 EFLAGS: 00010293 [ 57.782218][ T8412] RAX: ffffffff83ea6830 RBX: ffff8880395200d0 RCX: ffff8880235f1c40 [ 57.790525][ T8412] RDX: 0000000000000000 RSI: 00000000ffffffef RDI: 0000000000000000 [ 57.799001][ T8412] RBP: 00000000ffffffef R08: ffffffff83ea60b4 R09: fffffbfff204d9bb [ 57.807290][ T8412] R10: fffffbfff204d9bb R11: 0000000000000000 R12: ffff88801bd95800 [ 57.816422][ T8412] R13: ffff888022860000 R14: ffff88803952052c R15: 0000000000700000 [ 57.825338][ T8412] FS: 0000000001e72300(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 [ 57.835775][ T8412] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 57.842655][ T8412] CR2: 00007f35ad4e4020 CR3: 0000000017bfc000 CR4: 00000000001506f0 [ 57.850993][ T8412] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 57.863150][ T8412] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 57.871583][ T8412] Call Trace: [ 57.875023][ T8412] loop_add+0x604/0x7e0 [ 57.879612][ T8412] loop_control_ioctl+0x4ca/0x770 [ 57.885131][ T8412] ? xor_init+0x60/0x60 [ 57.889326][ T8412] ? print_irqtrace_events+0x220/0x220 [ 57.896355][ T8412] ? vtime_user_exit+0x2b2/0x3e0 [ 57.901360][ T8412] ? bpf_lsm_file_ioctl+0x5/0x10 [ 57.907245][ T8412] ? security_file_ioctl+0x9d/0xb0 [ 57.912444][ T8412] ? xor_init+0x60/0x60 [ 57.917786][ T8412] __se_sys_ioctl+0xfb/0x170 [ 57.922740][ T8412] do_syscall_64+0x3f/0xb0 [ 57.929097][ T8412] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 57.936605][ T8412] RIP: 0033:0x43ee49 [ 57.940690][ T8412] Code: 28 c3 e8 2a 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 [ 57.963875][ T8412] RSP: 002b:00007ffdd70debb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 57.972371][ T8412] RAX: ffffffffffffffda RBX: 0000000000400488 RCX: 000000000043ee49 [ 57.982803][ T8412] RDX: 0000000000200000 RSI: 0000000000004c80 RDI: 0000000000000003 [ 57.992092][ T8412] RBP: 0000000000402e30 R08: 0000000000000000 R09: 0000000000400488 [ 58.001583][ T8412] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402ec0 [ 58.010671][ T8412] R13: 0000000000000000 R14: 00000000004ac018 R15: 0000000000400488 [ 58.020117][ T8412] Kernel panic - not syncing: panic_on_warn set ... [ 58.027328][ T8412] CPU: 1 PID: 8412 Comm: syz-executor653 Not tainted 5.13.0-rc2-syzkaller #0 [ 58.037290][ T8412] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.048099][ T8412] Call Trace: [ 58.051867][ T8412] dump_stack+0x202/0x31e [ 58.058006][ T8412] ? show_regs_print_info+0x12/0x12 [ 58.063640][ T8412] ? log_buf_vmcoreinfo_setup+0x498/0x498 [ 58.069886][ T8412] panic+0x2e1/0x850 [ 58.074168][ T8412] ? __kernel_text_address+0x93/0x100 [ 58.079912][ T8412] ? __warn+0x13e/0x270 [ 58.084543][ T8412] ? nmi_panic+0x90/0x90 [ 58.089111][ T8412] __warn+0x26a/0x270 [ 58.093218][ T8412] ? __device_add_disk+0xe00/0x10d0 [ 58.098648][ T8412] ? __device_add_disk+0xe00/0x10d0 [ 58.103875][ T8412] report_bug+0x1b1/0x2e0 [ 58.108270][ T8412] handle_bug+0x3d/0x70 [ 58.112544][ T8412] exc_invalid_op+0x16/0x40 [ 58.117160][ T8412] asm_exc_invalid_op+0x12/0x20 [ 58.122033][ T8412] RIP: 0010:__device_add_disk+0xe00/0x10d0 [ 58.127981][ T8412] Code: ff e8 e4 9a 94 fd 0f 0b e9 6f fe ff ff e8 d8 9a 94 fd 0f 0b e9 71 f3 ff ff e8 cc 9a 94 fd 0f 0b e9 c7 f9 ff ff e8 c0 9a 94 fd <0f> 0b e9 8a f8 ff ff e8 b4 9a 94 fd 0f 0b e9 e3 f2 ff ff e8 a8 9a [ 58.147827][ T8412] RSP: 0018:ffffc90000fdfce8 EFLAGS: 00010293 [ 58.153926][ T8412] RAX: ffffffff83ea6830 RBX: ffff8880395200d0 RCX: ffff8880235f1c40 [ 58.161967][ T8412] RDX: 0000000000000000 RSI: 00000000ffffffef RDI: 0000000000000000 [ 58.169989][ T8412] RBP: 00000000ffffffef R08: ffffffff83ea60b4 R09: fffffbfff204d9bb [ 58.178311][ T8412] R10: fffffbfff204d9bb R11: 0000000000000000 R12: ffff88801bd95800 [ 58.186628][ T8412] R13: ffff888022860000 R14: ffff88803952052c R15: 0000000000700000 [ 58.194821][ T8412] ? __device_add_disk+0x684/0x10d0 [ 58.200063][ T8412] ? __device_add_disk+0xe00/0x10d0 [ 58.205546][ T8412] ? __device_add_disk+0xe00/0x10d0 [ 58.210835][ T8412] loop_add+0x604/0x7e0 [ 58.215219][ T8412] loop_control_ioctl+0x4ca/0x770 [ 58.220397][ T8412] ? xor_init+0x60/0x60 [ 58.225069][ T8412] ? print_irqtrace_events+0x220/0x220 [ 58.230660][ T8412] ? vtime_user_exit+0x2b2/0x3e0 [ 58.235816][ T8412] ? bpf_lsm_file_ioctl+0x5/0x10 [ 58.240914][ T8412] ? security_file_ioctl+0x9d/0xb0 [ 58.246163][ T8412] ? xor_init+0x60/0x60 [ 58.250381][ T8412] __se_sys_ioctl+0xfb/0x170 [ 58.255146][ T8412] do_syscall_64+0x3f/0xb0 [ 58.259614][ T8412] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 58.265651][ T8412] RIP: 0033:0x43ee49 [ 58.269754][ T8412] Code: 28 c3 e8 2a 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 [ 58.289888][ T8412] RSP: 002b:00007ffdd70debb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 58.298564][ T8412] RAX: ffffffffffffffda RBX: 0000000000400488 RCX: 000000000043ee49 [ 58.306584][ T8412] RDX: 0000000000200000 RSI: 0000000000004c80 RDI: 0000000000000003 [ 58.314593][ T8412] RBP: 0000000000402e30 R08: 0000000000000000 R09: 0000000000400488 [ 58.322603][ T8412] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402ec0 [ 58.330765][ T8412] R13: 0000000000000000 R14: 00000000004ac018 R15: 0000000000400488 [ 58.340068][ T8412] Kernel Offset: disabled [ 58.345391][ T8412] Rebooting in 86400 seconds..