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

Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.0.131' (ECDSA) to the list of known hosts.
syzkaller login: [   36.240828] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[   36.242821] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[   36.253671] ------------[ cut here ]------------
[   36.260046] WARNING: CPU: 0 PID: 8013 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26
[   36.268367] Kernel panic - not syncing: kernel: panic_on_warn set ...
[   36.268367] 
[   36.276632] CPU: 0 PID: 8013 Comm: syz-executor322 Not tainted 4.14.307-syzkaller #0
[   36.284537] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023
[   36.293897] Call Trace:
[   36.296499]  dump_stack+0x1b2/0x281
[   36.300142]  panic+0x21d/0x451
[   36.303353]  ? add_taint.cold+0x16/0x16
[   36.307368]  ? log_store.cold+0x16/0x16
[   36.311366]  ? sysfs_warn_dup.cold+0x17/0x26
[   36.312495] gfs2: fsid=syz:syz: Now mounting FS...
[   36.315780]  check_panic_on_warn.cold+0x19/0x35
[   36.315794]  __warn+0xdf/0x1e0
[   36.315806]  ? ist_end_non_atomic+0x10/0x10
[   36.315819]  ? sysfs_warn_dup.cold+0x17/0x26
[   36.337518]  report_bug+0x208/0x250
[   36.341252]  do_error_trap+0x195/0x2d0
[   36.345141]  ? math_error+0x2d0/0x2d0
[   36.349018]  ? ___preempt_schedule+0x16/0x18
[   36.353423]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   36.358266]  invalid_op+0x1b/0x40
[   36.361714] RIP: 0010:sysfs_warn_dup.cold+0x17/0x26
[   36.366726] RSP: 0018:ffff8880b3af7728 EFLAGS: 00010282
[   36.372080] RAX: 000000000000003a RBX: ffff8880954e1b90 RCX: 0000000000000000
[   36.379425] RDX: 0000000000000000 RSI: ffffffff878bd360 RDI: ffffed101675eedb
[   36.386686] RBP: ffff8880b289c1c0 R08: 000000000000003a R09: 0000000000000000
[   36.393944] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8882388a09a0
[   36.401218] R13: ffff8880b4676800 R14: ffff8880954e1b98 R15: ffff888095555b58
[   36.408506]  ? sysfs_warn_dup.cold+0x17/0x26
[   36.412908]  sysfs_create_dir_ns+0x16f/0x1d0
[   36.417422]  kobject_add_internal+0x28b/0x930
[   36.421925]  kobject_init_and_add+0xde/0x120
[   36.426415]  ? kobject_create_and_add+0x200/0x200
[   36.431256]  ? vsnprintf+0x260/0x1340
[   36.435061]  gfs2_sys_fs_add+0x184/0x3f0
[   36.439118]  ? recover_store+0x100/0x100
[   36.443349]  ? snprintf+0xa5/0xd0
[   36.446823]  ? strscpy+0x94/0x280
[   36.450277]  fill_super+0x118b/0x2310
[   36.454100]  ? vsnprintf+0x260/0x1340
[   36.457911]  ? gfs2_online_uevent+0x1b0/0x1b0
[   36.462404]  ? pointer+0x9e0/0x9e0
[   36.465940]  ? snprintf+0xa5/0xd0
[   36.469413]  ? vsprintf+0x30/0x30
[   36.472947]  ? gfs2_open+0x160/0x160
[   36.476741]  ? set_blocksize+0x125/0x380
[   36.480797]  gfs2_mount+0x439/0x510
[   36.484419]  ? fill_super+0x2310/0x2310
[   36.488587]  ? alloc_pages_current+0x15d/0x260
[   36.493164]  ? __lockdep_init_map+0x100/0x560
[   36.497658]  mount_fs+0x92/0x2a0
[   36.501195]  vfs_kern_mount.part.0+0x5b/0x470
[   36.505695]  do_mount+0xe65/0x2a30
[   36.509233]  ? retint_kernel+0x2d/0x2d
[   36.513223]  ? copy_mount_string+0x40/0x40
[   36.517477]  ? memset+0x20/0x40
[   36.520773]  ? copy_mount_options+0x1fa/0x2f0
[   36.525260]  ? copy_mnt_ns+0xa30/0xa30
[   36.529141]  SyS_mount+0xa8/0x120
[   36.532589]  ? copy_mnt_ns+0xa30/0xa30
[   36.536471]  do_syscall_64+0x1d5/0x640
[   36.540356]  entry_SYSCALL_64_after_hwframe+0x5e/0xd3
[   36.546027] RIP: 0033:0x7f484323971a
[   36.549817] RSP: 002b:00007ffc4b4f6108 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5
[   36.557638] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f484323971a
[   36.565075] RDX: 0000000020000100 RSI: 0000000020000000 RDI: 00007ffc4b4f6120
[   36.572462] RBP: 00007ffc4b4f6120 R08: 00007ffc4b4f6160 R09: 0000000000000002
[   36.579898] R10: 0000000000000000 R11: 0000000000000282 R12: 0000000000000004
[   36.587265] R13: 00005555572142c0 R14: 0000000000000000 R15: 00007ffc4b4f6160
[   36.594957] Kernel Offset: disabled
[   36.598642] Rebooting in 86400 seconds..