gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
gfs2: fsid=syz:syz: Now mounting FS...
sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
------------[ cut here ]------------
sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
WARNING: CPU: 0 PID: 8010 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30
Kernel panic - not syncing: kernel: panic_on_warn set ...

CPU: 0 PID: 8010 Comm: syz-executor734 Not tainted 4.14.305-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
Call Trace:
sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x281 lib/dump_stack.c:58
 panic+0x21d/0x451 kernel/panic.c:247
sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
 check_panic_on_warn.cold+0x19/0x35 kernel/panic.c:171
 __warn+0xdf/0x1e0 kernel/panic.c:603
 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
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:967
------------[ cut here ]------------
RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30
WARNING: CPU: 1 PID: 8013 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30
RSP: 0018:ffff88809ab4f728 EFLAGS: 00010282
Modules linked in:
RAX: 000000000000003a RBX: ffff8880aaded650 RCX: 0000000000000000
CPU: 1 PID: 8013 Comm: syz-executor734 Not tainted 4.14.305-syzkaller #0
RDX: 0000000000000000 RSI: ffffffff878bd360 RDI: ffffed1013569edb
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
RBP: ffff8880b1aaa1c0 R08: 000000000000003a R09: 0000000000000000
task: ffff8880b35ac100 task.stack: ffff888095868000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880b080ad20
RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30
R13: ffff8880a1929140 R14: ffff8880aaded658 R15: ffff8880aade5618
RSP: 0018:ffff88809586f728 EFLAGS: 00010282
 sysfs_create_dir_ns+0x16f/0x1d0 fs/sysfs/dir.c:59
RAX: 000000000000003a RBX: ffff88809466da50 RCX: 0000000000000000
 create_dir lib/kobject.c:71 [inline]
 kobject_add_internal+0x28b/0x930 lib/kobject.c:229
RDX: 0000000000000000 RSI: ffffffff878bd360 RDI: ffffed1012b0dedb
 kobject_add_varg lib/kobject.c:364 [inline]
 kobject_init_and_add+0xde/0x120 lib/kobject.c:436
RBP: ffff8880b2f38380 R08: 000000000000003a R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880b080ad20
R13: ffff8880b0647640 R14: ffff88809466da58 R15: ffff8880aaded658
 gfs2_sys_fs_add+0x184/0x3f0 fs/gfs2/sys.c:652
FS:  0000555555ab8300(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4236b58000 CR3: 00000000a029d000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
 fill_super+0x118b/0x2310 fs/gfs2/ops_fstype.c:1127
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
 fill_super+0x118b/0x2310 fs/gfs2/ops_fstype.c:1127
 vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046
 vfs_kern_mount fs/namespace.c:1036 [inline]
 do_new_mount fs/namespace.c:2572 [inline]
 do_mount+0xe65/0x2a30 fs/namespace.c:2905
 gfs2_mount+0x439/0x510 fs/gfs2/ops_fstype.c:1340
 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
 mount_fs+0x92/0x2a0 fs/super.c:1237
RIP: 0033:0x7fc2ac3ec9da
 vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046
RSP: 002b:00007ffe020787f8 EFLAGS: 00000282
 vfs_kern_mount fs/namespace.c:1036 [inline]
 do_new_mount fs/namespace.c:2572 [inline]
 do_mount+0xe65/0x2a30 fs/namespace.c:2905
 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fc2ac3ec9da
RDX: 0000000020000100 RSI: 0000000020012500 RDI: 00007ffe02078800
RBP: 00007ffe02078800 R08: 00007ffe02078840 R09: 0000000000000002
R10: 0000000000000819 R11: 0000000000000282 R12: 0000000000000004
R13: 0000555555ab82c0 R14: 00007ffe02078840 R15: 0000000000000000
 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: 0033:0x7fc2ac3ec9da
RSP: 002b:00007ffe020787f8 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fc2ac3ec9da
RDX: 0000000020000100 RSI: 0000000020012500 RDI: 00007ffe02078800
RBP: 00007ffe02078800 R08: 00007ffe02078840 R09: 0000000000000002
R10: 0000000000000819 R11: 0000000000000282 R12: 0000000000000004
R13: 0000555555ab82c0 R14: 00007ffe02078840 R15: 0000000000000000
Code: bd ea ff ff ff e9 4f 9c 9f fa 4c 89 ff e8 b4 b6 7a fa eb da e8 fd f3 50 fa 4c 89 ea 48 89 ee 48 c7 c7 80 c8 95 87 e8 fd fb fe ff <0f> 0b 48 89 ef 5d 41 5c 41 5d e9 8c 8c 7a fa e8 d7 f3 50 fa 4d 
---[ end trace 454171f5cef1c432 ]---
Kernel Offset: disabled
Rebooting in 86400 seconds..