Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.1.43' (ECDSA) to the list of known hosts.
syzkaller login: [   27.666111] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[   27.667760] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[   27.689268] ------------[ cut here ]------------
[   27.694055] WARNING: CPU: 1 PID: 7966 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26
[   27.702390] Kernel panic - not syncing: panic_on_warn set ...
[   27.702390] 
[   27.709772] CPU: 1 PID: 7966 Comm: syz-executor265 Not tainted 4.14.302-syzkaller #0
[   27.713973] gfs2: fsid=syz:syz: Now mounting FS...
[   27.717850] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
[   27.717854] Call Trace:
[   27.717870]  dump_stack+0x1b2/0x281
[   27.717883]  panic+0x1f9/0x42d
[   27.741573]  ? add_taint.cold+0x16/0x16
[   27.745529]  ? sysfs_warn_dup.cold+0x17/0x26
[   27.749927]  ? sysfs_warn_dup.cold+0x17/0x26
[   27.754312]  __warn.cold+0x20/0x44
[   27.757831]  ? ist_end_non_atomic+0x10/0x10
[   27.762128]  ? sysfs_warn_dup.cold+0x17/0x26
[   27.766599]  report_bug+0x208/0x250
[   27.770205]  do_error_trap+0x195/0x2d0
[   27.774071]  ? math_error+0x2d0/0x2d0
[   27.778287]  ? ___preempt_schedule+0x16/0x18
[   27.782688]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   27.787514]  invalid_op+0x1b/0x40
[   27.790945] RIP: 0010:sysfs_warn_dup.cold+0x17/0x26
[   27.795936] RSP: 0018:ffff888095a37728 EFLAGS: 00010282
[   27.801284] RAX: 000000000000003a RBX: ffff8880a88958d0 RCX: 0000000000000000
[   27.808533] RDX: 0000000000000000 RSI: ffffffff878bd020 RDI: ffffed1012b46edb
[   27.815789] RBP: ffff8880956dc7c0 R08: 000000000000003a R09: 0000000000000000
[   27.823471] R10: 0000000000000000 R11: 0000000000000000 R12: ffff888238860e00
[   27.830729] R13: ffff8880a2d747c0 R14: ffff8880a88958d8 R15: ffff888091625958
[   27.837991]  ? sysfs_warn_dup.cold+0x17/0x26
[   27.842378]  sysfs_create_dir_ns+0x16f/0x1d0
[   27.846764]  kobject_add_internal+0x28b/0x930
[   27.851238]  kobject_init_and_add+0xde/0x120
[   27.855625]  ? kobject_create_and_add+0x200/0x200
[   27.860449]  ? vsnprintf+0x260/0x1340
[   27.864354]  gfs2_sys_fs_add+0x184/0x3f0
[   27.868393]  ? recover_store+0x100/0x100
[   27.872529]  ? snprintf+0xa5/0xd0
[   27.875986]  ? strscpy+0x94/0x280
[   27.879436]  fill_super+0x118b/0x2310
[   27.883227]  ? vsnprintf+0x260/0x1340
[   27.887010]  ? gfs2_online_uevent+0x1b0/0x1b0
[   27.891492]  ? pointer+0x9e0/0x9e0
[   27.895012]  ? snprintf+0xa5/0xd0
[   27.898442]  ? vsprintf+0x30/0x30
[   27.901890]  ? gfs2_open+0x160/0x160
[   27.905583]  ? set_blocksize+0x125/0x380
[   27.909622]  gfs2_mount+0x439/0x510
[   27.913236]  ? fill_super+0x2310/0x2310
[   27.917202]  ? alloc_pages_current+0x15d/0x260
[   27.921761]  ? __lockdep_init_map+0x100/0x560
[   27.926321]  mount_fs+0x92/0x2a0
[   27.929670]  vfs_kern_mount.part.0+0x5b/0x470
[   27.934143]  do_mount+0xe65/0x2a30
[   27.937667]  ? copy_mount_string+0x40/0x40
[   27.941885]  ? rcu_read_lock_sched_held+0x16c/0x1d0
[   27.946879]  ? copy_mnt_ns+0xa30/0xa30
[   27.950743]  ? copy_mount_options+0x1fa/0x2f0
[   27.955216]  ? copy_mnt_ns+0xa30/0xa30
[   27.959081]  SyS_mount+0xa8/0x120
[   27.962512]  ? copy_mnt_ns+0xa30/0xa30
[   27.966378]  do_syscall_64+0x1d5/0x640
[   27.970250]  entry_SYSCALL_64_after_hwframe+0x5e/0xd3
[   27.975419] RIP: 0033:0x7f5604a426ba
[   27.979105] RSP: 002b:00007ffe9a75c9b8 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5
[   27.986966] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f5604a426ba
[   27.994303] RDX: 0000000020037f40 RSI: 0000000020037f80 RDI: 00007ffe9a75c9d0
[   28.001637] RBP: 00007ffe9a75c9d0 R08: 00007ffe9a75ca10 R09: 0000000000000002
[   28.008884] R10: 0000000000000000 R11: 0000000000000282 R12: 0000000000000004
[   28.016419] R13: 00005555570a42c0 R14: 0000000000000000 R15: 00007ffe9a75ca10
[   28.023905] Kernel Offset: disabled
[   28.027561] Rebooting in 86400 seconds..