sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
------------[ cut here ]------------
WARNING: CPU: 1 PID: 7994 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 7994 Comm: syz-executor421 Not tainted 4.14.302-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x281 lib/dump_stack.c:58
 panic+0x1f9/0x42d kernel/panic.c:183
 __warn.cold+0x20/0x44 kernel/panic.c:547
 report_bug+0x208/0x250 lib/bug.c:183
 fixup_bug arch/x86/kernel/traps.c:177 [inline]
 fixup_bug arch/x86/kernel/traps.c:172 [inline]
 do_error_trap+0x195/0x2d0 arch/x86/kernel/traps.c:295
sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:967
RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30
RSP: 0018:ffff8880b321f728 EFLAGS: 00010282
------------[ cut here ]------------
RAX: 000000000000003a RBX: ffff8880b335db90 RCX: 0000000000000000
WARNING: CPU: 0 PID: 7996 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30
RDX: 0000000000000000 RSI: ffffffff878bd020 RDI: ffffed1016643edb
Modules linked in:
RBP: ffff888095b50e80 R08: 000000000000003a R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff888238f93b60
CPU: 0 PID: 7996 Comm: syz-executor421 Not tainted 4.14.302-syzkaller #0
R13: ffff88809f7366c0 R14: ffff8880b335db98 R15: ffff8880959e9b58
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
task: ffff8880b2f32440 task.stack: ffff8880b4f88000
 sysfs_create_dir_ns+0x16f/0x1d0 fs/sysfs/dir.c:59
RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30
 create_dir lib/kobject.c:71 [inline]
 kobject_add_internal+0x28b/0x930 lib/kobject.c:229
RSP: 0018:ffff8880b4f8f728 EFLAGS: 00010282
 kobject_add_varg lib/kobject.c:364 [inline]
 kobject_init_and_add+0xde/0x120 lib/kobject.c:436
RAX: 000000000000003a RBX: ffff888095b5dbd0 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff878bd020 RDI: ffffed10169f1edb
RBP: ffff8880956e60c0 R08: 000000000000003a R09: 0000000000000001
 gfs2_sys_fs_add+0x184/0x3f0 fs/gfs2/sys.c:652
R10: 0000000000000000 R11: 0000000000000000 R12: ffff888238f93b60
R13: ffff8880a22eaa00 R14: ffff888095b5dbd8 R15: ffff8880b10f5c18
FS:  0000555556d0f300(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
 fill_super+0x118b/0x2310 fs/gfs2/ops_fstype.c:1127
CR2: 00007f15ab9ad000 CR3: 000000009be95000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 sysfs_create_dir_ns+0x16f/0x1d0 fs/sysfs/dir.c:59
 create_dir lib/kobject.c:71 [inline]
 kobject_add_internal+0x28b/0x930 lib/kobject.c:229
 kobject_add_varg lib/kobject.c:364 [inline]
 kobject_init_and_add+0xde/0x120 lib/kobject.c:436
 gfs2_mount+0x439/0x510 fs/gfs2/ops_fstype.c:1340
 gfs2_sys_fs_add+0x184/0x3f0 fs/gfs2/sys.c:652
 mount_fs+0x92/0x2a0 fs/super.c:1237
 vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046
 fill_super+0x118b/0x2310 fs/gfs2/ops_fstype.c:1127
 vfs_kern_mount fs/namespace.c:1036 [inline]
 do_new_mount fs/namespace.c:2572 [inline]
 do_mount+0xe65/0x2a30 fs/namespace.c:2905
 SYSC_mount fs/namespace.c:3121 [inline]
 SyS_mount+0xa8/0x120 fs/namespace.c:3098
 gfs2_mount+0x439/0x510 fs/gfs2/ops_fstype.c:1340
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x5e/0xd3
RIP: 0033:0x7f9b47c066ea
 mount_fs+0x92/0x2a0 fs/super.c:1237
RSP: 002b:00007ffc1ee7cf28 EFLAGS: 00000282
 vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046
 ORIG_RAX: 00000000000000a5
 vfs_kern_mount fs/namespace.c:1036 [inline]
 do_new_mount fs/namespace.c:2572 [inline]
 do_mount+0xe65/0x2a30 fs/namespace.c:2905
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f9b47c066ea
RDX: 00000000200124c0 RSI: 0000000020000040 RDI: 00007ffc1ee7cf40
RBP: 00007ffc1ee7cf40 R08: 00007ffc1ee7cf80 R09: 0000000000000002
R10: 0000000000000000 R11: 0000000000000282 R12: 0000000000000004
R13: 0000555556d0f2c0 R14: 0000000000000000 R15: 00007ffc1ee7cf80
 SYSC_mount fs/namespace.c:3121 [inline]
 SyS_mount+0xa8/0x120 fs/namespace.c:3098
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x5e/0xd3
RIP: 0033:0x7f9b47c066ea
RSP: 002b:00007ffc1ee7cf28 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f9b47c066ea
RDX: 00000000200124c0 RSI: 0000000020000040 RDI: 00007ffc1ee7cf40
RBP: 00007ffc1ee7cf40 R08: 00007ffc1ee7cf80 R09: 0000000000000002
R10: 0000000000000000 R11: 0000000000000282 R12: 0000000000000004
R13: 0000555556d0f2c0 R14: 0000000000000000 R15: 00007ffc1ee7cf80
Code: bd ea ff ff ff e9 8f c2 9f fa 4c 89 ff e8 74 de 7a fa eb da e8 6d 1d 51 fa 4c 89 ea 48 89 ee 48 c7 c7 80 c4 95 87 e8 e5 fb fe ff <0f> 0b 48 89 ef 5d 41 5c 41 5d e9 4c b4 7a fa e8 47 1d 51 fa 4d 
---[ end trace 0730c0f51cd490be ]---
Kernel Offset: disabled
Rebooting in 86400 seconds..