[  OK  ] Reached target Graphical Interface.
         Starting Update UTMP about System Runlevel Changes...
         Starting Load/Save RF Kill Switch Status...
[  OK  ] Started Update UTMP about System Runlevel Changes.
[  OK  ] Started Load/Save RF Kill Switch Status.

Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.0.207' (ECDSA) to the list of known hosts.
syzkaller login: [   31.444095] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[   31.460954] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[   31.484043] ------------[ cut here ]------------
[   31.484844] gfs2: fsid=syz:syz: Now mounting FS...
[   31.488821] WARNING: CPU: 1 PID: 7977 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26
[   31.488826] Kernel panic - not syncing: panic_on_warn set ...
[   31.488826] 
[   31.488834] CPU: 1 PID: 7977 Comm: syz-executor224 Not tainted 4.14.302-syzkaller #0
[   31.488838] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
[   31.488841] Call Trace:
[   31.488851]  dump_stack+0x1b2/0x281
[   31.488860]  panic+0x1f9/0x42d
[   31.488866]  ? add_taint.cold+0x16/0x16
[   31.488877]  ? sysfs_warn_dup.cold+0x17/0x26
[   31.488887]  ? sysfs_warn_dup.cold+0x17/0x26
[   31.488900]  __warn.cold+0x20/0x44
[   31.488909]  ? ist_end_non_atomic+0x10/0x10
[   31.488916]  ? sysfs_warn_dup.cold+0x17/0x26
[   31.488924]  report_bug+0x208/0x250
[   31.488935]  do_error_trap+0x195/0x2d0
[   31.488942]  ? math_error+0x2d0/0x2d0
[   31.488951]  ? ___preempt_schedule+0x16/0x18
[   31.576724]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   31.581562]  invalid_op+0x1b/0x40
[   31.584995] RIP: 0010:sysfs_warn_dup.cold+0x17/0x26
[   31.589991] RSP: 0018:ffff8880b3767728 EFLAGS: 00010282
[   31.595330] RAX: 000000000000003a RBX: ffff888095561990 RCX: 0000000000000000
[   31.602583] RDX: 0000000000000000 RSI: ffffffff878bd020 RDI: ffffed10166ecedb
[   31.609826] RBP: ffff88809561e540 R08: 000000000000003a R09: 0000000000000000
[   31.617068] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8882393191c0
[   31.624333] R13: ffff8880b126c840 R14: ffff888095561998 R15: ffff888095009958
[   31.631592]  ? sysfs_warn_dup.cold+0x17/0x26
[   31.635976]  sysfs_create_dir_ns+0x16f/0x1d0
[   31.640360]  kobject_add_internal+0x28b/0x930
[   31.644835]  kobject_init_and_add+0xde/0x120
[   31.649220]  ? kobject_create_and_add+0x200/0x200
[   31.654044]  ? vsnprintf+0x260/0x1340
[   31.657827]  gfs2_sys_fs_add+0x184/0x3f0
[   31.661864]  ? recover_store+0x100/0x100
[   31.665905]  ? snprintf+0xa5/0xd0
[   31.669340]  ? strscpy+0x94/0x280
[   31.672773]  fill_super+0x118b/0x2310
[   31.676552]  ? vsnprintf+0x260/0x1340
[   31.680339]  ? gfs2_online_uevent+0x1b0/0x1b0
[   31.684807]  ? pointer+0x9e0/0x9e0
[   31.688323]  ? snprintf+0xa5/0xd0
[   31.691749]  ? vsprintf+0x30/0x30
[   31.695178]  ? gfs2_open+0x160/0x160
[   31.698867]  ? set_blocksize+0x125/0x380
[   31.702991]  gfs2_mount+0x439/0x510
[   31.706616]  ? fill_super+0x2310/0x2310
[   31.710575]  ? alloc_pages_current+0x15d/0x260
[   31.715230]  ? __lockdep_init_map+0x100/0x560
[   31.719723]  mount_fs+0x92/0x2a0
[   31.723070]  vfs_kern_mount.part.0+0x5b/0x470
[   31.727551]  do_mount+0xe65/0x2a30
[   31.731255]  ? retint_kernel+0x2d/0x2d
[   31.735121]  ? copy_mount_string+0x40/0x40
[   31.739350]  ? copy_mount_options+0x188/0x2f0
[   31.743820]  ? copy_mount_options+0x1fa/0x2f0
[   31.748291]  ? copy_mnt_ns+0xa30/0xa30
[   31.752157]  SyS_mount+0xa8/0x120
[   31.755588]  ? copy_mnt_ns+0xa30/0xa30
[   31.759457]  do_syscall_64+0x1d5/0x640
[   31.763335]  entry_SYSCALL_64_after_hwframe+0x5e/0xd3
[   31.768504] RIP: 0033:0x7fe7ac6d86ba
[   31.772192] RSP: 002b:00007fffdc9291d8 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5
[   31.779875] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fe7ac6d86ba
[   31.787131] RDX: 0000000020037f40 RSI: 0000000020037f80 RDI: 00007fffdc9291f0
[   31.794376] RBP: 00007fffdc9291f0 R08: 00007fffdc929230 R09: 0000000000000002
[   31.801620] R10: 0000000000000000 R11: 0000000000000282 R12: 0000000000000004
[   31.808866] R13: 0000555556c512c0 R14: 0000000000000000 R15: 00007fffdc929230
[   31.816421] Kernel Offset: disabled
[   31.820072] Rebooting in 86400 seconds..