Warning: Permanently added '10.128.0.9' (ECDSA) to the list of known hosts.
executing program
[   29.461476] sysfs: cannot create duplicate filename '/devices/virtual/bdi/7:0'
[   29.469060] ------------[ cut here ]------------
[   29.473840] WARNING: CPU: 0 PID: 8005 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26
[   29.482047] Kernel panic - not syncing: panic_on_warn set ...
[   29.482047] 
[   29.489390] CPU: 0 PID: 8005 Comm: syz-executor247 Not tainted 4.14.302-syzkaller #0
[   29.497539] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
[   29.506873] Call Trace:
[   29.509446]  dump_stack+0x1b2/0x281
[   29.513673]  panic+0x1f9/0x42d
[   29.516858]  ? add_taint.cold+0x16/0x16
[   29.520811]  ? sysfs_warn_dup.cold+0x17/0x26
[   29.525212]  ? sysfs_warn_dup.cold+0x17/0x26
[   29.529597]  __warn.cold+0x20/0x44
[   29.533137]  ? ist_end_non_atomic+0x10/0x10
[   29.537435]  ? sysfs_warn_dup.cold+0x17/0x26
[   29.541816]  report_bug+0x208/0x250
[   29.545422]  do_error_trap+0x195/0x2d0
[   29.549281]  ? math_error+0x2d0/0x2d0
[   29.553060]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   29.557877]  invalid_op+0x1b/0x40
[   29.561315] RIP: 0010:sysfs_warn_dup.cold+0x17/0x26
[   29.566315] RSP: 0018:ffff88809100f7e8 EFLAGS: 00010282
[   29.571656] RAX: 0000000000000042 RBX: ffff888095bf04d0 RCX: 0000000000000000
[   29.578997] RDX: 0000000000000000 RSI: ffffffff878bd020 RDI: ffffed1012201ef3
[   29.586240] RBP: ffff8880b41366c0 R08: 0000000000000042 R09: 0000000000000000
[   29.593485] R10: 0000000000000000 R11: 0000000000000000 R12: ffff88823892c620
[   29.600739] R13: ffff8880afd33740 R14: ffff888095bf04d8 R15: ffff8880953b2a18
[   29.608011]  ? sysfs_warn_dup.cold+0x17/0x26
[   29.612395]  sysfs_create_dir_ns+0x16f/0x1d0
[   29.616785]  kobject_add_internal+0x28b/0x930
[   29.621262]  kobject_add+0x11f/0x180
[   29.624962]  ? kset_create_and_add+0x190/0x190
[   29.629521]  device_add+0x33f/0x15c0
[   29.633209]  ? rcu_lockdep_current_cpu_online+0xed/0x140
[   29.638634]  ? kfree_const+0x33/0x40
[   29.642322]  ? device_is_dependent+0x2a0/0x2a0
[   29.646879]  ? kfree+0x1f0/0x250
[   29.650220]  device_create_groups_vargs+0x1dc/0x250
[   29.655222]  device_create_vargs+0x3a/0x50
[   29.659524]  bdi_register_va.part.0+0x35/0x650
[   29.664099]  bdi_register+0x101/0x110
[   29.667884]  ? bdi_register_va+0x80/0x80
[   29.671924]  ? vsnprintf+0x260/0x1340
[   29.675703]  bdi_register_owner+0x59/0xf0
[   29.679846]  device_add_disk+0x5bb/0xdc0
[   29.683882]  ? sprintf+0xa7/0xd0
[   29.687222]  ? blk_alloc_devt+0x310/0x310
[   29.691516]  ? __lockdep_init_map+0x100/0x560
[   29.695982]  ? __lockdep_init_map+0x100/0x560
[   29.700579]  loop_add+0x615/0x830
[   29.704029]  ? loop_queue_rq+0x280/0x280
[   29.708063]  ? loop_queue_work+0x21e0/0x21e0
[   29.712451]  loop_control_ioctl+0x11a/0x3f0
[   29.716755]  ? loop_lookup+0x190/0x190
[   29.720622]  ? loop_lookup+0x190/0x190
[   29.724495]  do_vfs_ioctl+0x75a/0xff0
[   29.728269]  ? rcu_lockdep_current_cpu_online+0xed/0x140
[   29.733691]  ? ioctl_preallocate+0x1a0/0x1a0
[   29.738072]  ? kmem_cache_free+0x23a/0x2b0
[   29.742278]  ? putname+0xcd/0x110
[   29.745704]  ? do_sys_open+0x208/0x410
[   29.749564]  ? filp_open+0x60/0x60
[   29.753076]  ? security_file_ioctl+0x83/0xb0
[   29.757456]  SyS_ioctl+0x7f/0xb0
[   29.760794]  ? do_vfs_ioctl+0xff0/0xff0
[   29.764742]  do_syscall_64+0x1d5/0x640
[   29.768606]  entry_SYSCALL_64_after_hwframe+0x5e/0xd3
[   29.773780] RIP: 0033:0x7fe5a3debfd9
[   29.777474] RSP: 002b:00007ffc1116e7a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   29.785163] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fe5a3debfd9
[   29.792502] RDX: 8000002000400000 RSI: 0000000000004c80 RDI: 0000000000000003
[   29.799752] RBP: 00007fe5a3daffc0 R08: 0000000000000000 R09: 0000000000000000
[   29.807031] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe5a3db0050
[   29.814272] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[   29.821746] Kernel Offset: disabled
[   29.825486] Rebooting in 86400 seconds..