[[0;32m OK [0m] Reached target Graphical Interface.
Starting Update UTMP about System Runlevel Changes...
Starting Load/Save RF Kill Switch Status...
[[0;32m OK [0m] Started Update UTMP about System Runlevel Changes.
[[0;32m OK [0m] Started Load/Save RF Kill Switch Status.
Debian GNU/Linux 9 syzkaller ttyS0
Warning: Permanently added '10.128.0.90' (ECDSA) to the list of known hosts.
syzkaller login: [ 30.630107] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[ 30.638076] gfs2: fsid=syz:syz: Now mounting FS...
[ 30.651311] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[ 30.657877] gfs2: fsid=syz:syz.0: journal 0 mapped with 1 extents
[ 30.660410] ------------[ cut here ]------------
[ 30.668941] WARNING: CPU: 1 PID: 8008 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26
[ 30.670487] gfs2: fsid=syz:syz.0: jid=0, already locked for use
[ 30.677153] Kernel panic - not syncing: panic_on_warn set ...
[ 30.677153]
[ 30.677162] CPU: 1 PID: 8008 Comm: syz-executor251 Not tainted 4.14.302-syzkaller #0
[ 30.677166] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
[ 30.677169] Call Trace:
[ 30.677183] dump_stack+0x1b2/0x281
[ 30.677193] panic+0x1f9/0x42d
[ 30.677200] ? add_taint.cold+0x16/0x16
[ 30.677212] ? sysfs_warn_dup.cold+0x17/0x26
[ 30.683331] gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
[ 30.690618] ? sysfs_warn_dup.cold+0x17/0x26
[ 30.690626] __warn.cold+0x20/0x44
[ 30.690635] ? ist_end_non_atomic+0x10/0x10
[ 30.690641] ? sysfs_warn_dup.cold+0x17/0x26
[ 30.690649] report_bug+0x208/0x250
[ 30.690662] do_error_trap+0x195/0x2d0
[ 30.705237] gfs2: fsid=syz:syz.0: jid=0: Done
[ 30.707862] ? math_error+0x2d0/0x2d0
[ 30.707871] ? ___preempt_schedule+0x16/0x18
[ 30.707882] ? trace_hardirqs_off_thunk+0x1a/0x1c
[ 30.707896] invalid_op+0x1b/0x40
[ 30.710805] gfs2: fsid=syz:syz.0: first mount done, others may mount
[ 30.714057] RIP: 0010:sysfs_warn_dup.cold+0x17/0x26
[ 30.714062] RSP: 0018:ffff888091147728 EFLAGS: 00010282
[ 30.714069] RAX: 000000000000003a RBX: ffff8880b17a5b50 RCX: 0000000000000000
[ 30.714074] RDX: 0000000000000000 RSI: ffffffff878bd020 RDI: ffffed1012228edb
[ 30.714080] RBP: ffff8880b3a06e80 R08: 000000000000003a R09: 0000000000000000
[ 30.815187] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880b10a10e0
[ 30.822446] R13: ffff8880a90dd880 R14: ffff8880b17a5b58 R15: ffff888096ab5b18
[ 30.829720] ? sysfs_warn_dup.cold+0x17/0x26
[ 30.834127] sysfs_create_dir_ns+0x16f/0x1d0
[ 30.838529] kobject_add_internal+0x28b/0x930
[ 30.843019] kobject_init_and_add+0xde/0x120
[ 30.847420] ? kobject_create_and_add+0x200/0x200
[ 30.852256] ? vsnprintf+0x260/0x1340
[ 30.856055] gfs2_sys_fs_add+0x184/0x3f0
[ 30.860107] ? recover_store+0x100/0x100
[ 30.864160] ? snprintf+0xa5/0xd0
[ 30.867613] ? strscpy+0x94/0x280
[ 30.871075] fill_super+0x118b/0x2310
[ 30.874874] ? vsnprintf+0x260/0x1340
[ 30.878677] ? gfs2_online_uevent+0x1b0/0x1b0
[ 30.883170] ? pointer+0x9e0/0x9e0
[ 30.886706] ? snprintf+0xa5/0xd0
[ 30.890147] ? vsprintf+0x30/0x30
[ 30.893588] ? gfs2_open+0x160/0x160
[ 30.897300] ? set_blocksize+0x125/0x380
[ 30.901365] gfs2_mount+0x439/0x510
[ 30.904985] ? fill_super+0x2310/0x2310
[ 30.908965] ? alloc_pages_current+0x15d/0x260
[ 30.913536] ? __lockdep_init_map+0x100/0x560
[ 30.918024] mount_fs+0x92/0x2a0
[ 30.921383] vfs_kern_mount.part.0+0x5b/0x470
[ 30.925872] do_mount+0xe65/0x2a30
[ 30.929415] ? retint_kernel+0x2d/0x2d
[ 30.933304] ? copy_mount_string+0x40/0x40
[ 30.937532] ? memset+0x20/0x40
[ 30.940801] ? copy_mount_options+0x1fa/0x2f0
[ 30.945284] ? copy_mnt_ns+0xa30/0xa30
[ 30.949160] SyS_mount+0xa8/0x120
[ 30.952599] ? copy_mnt_ns+0xa30/0xa30
[ 30.956478] do_syscall_64+0x1d5/0x640
[ 30.960357] entry_SYSCALL_64_after_hwframe+0x5e/0xd3
[ 30.965533] RIP: 0033:0x7fb5e263d6ca
[ 30.969227] RSP: 002b:00007fffe90f3718 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5
[ 30.976927] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fb5e263d6ca
[ 30.984186] RDX: 0000000020037f40 RSI: 0000000020037f80 RDI: 00007fffe90f3730
[ 30.991440] RBP: 00007fffe90f3730 R08: 00007fffe90f3770 R09: 0000000000000002
[ 30.998698] R10: 0000000000000000 R11: 0000000000000282 R12: 0000000000000004
[ 31.005956] R13: 00005555556612c0 R14: 0000000000000000 R15: 00007fffe90f3770
[ 31.013548] Kernel Offset: disabled
[ 31.017196] Rebooting in 86400 seconds..