sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
do_sys_open+0x296/0x410 fs/open.c:1081
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
------------[ cut here ]------------
entry_SYSCALL_64_after_hwframe+0x46/0xbb
WARNING: CPU: 0 PID: 15956 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30
RIP: 0033:0x4196c4
Kernel panic - not syncing: panic_on_warn set ...
RSP: 002b:00007f3b906e4f30 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00000000004196c4
RDX: 0000000000010000 RSI: 0000000020000100 RDI: 00000000ffffff9c
RBP: 0000000020000100 R08: 0000000000000000 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000010000
R13: 0000000020000100 R14: 00007f3b906e5000 R15: 0000000020047a20
CPU: 0 PID: 15956 Comm: syz-executor.1 Not tainted 4.14.232-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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:186
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:964
RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30
RSP: 0018:ffff8880440ef728 EFLAGS: 00010282
RAX: 000000000000003a RBX: ffff8880425f5b10 RCX: 0000000000000000
RDX: 0000000000039e4c RSI: ffffffff81441a30 RDI: ffffed100881dedb
RBP: ffff888044294280 R08: 000000000000003a R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8882392088c0
R13: ffff8880a9c9eec0 R14: ffff8880425f5b18 R15: ffff88803bef9bd8
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_sys_fs_add+0x184/0x3f0 fs/gfs2/sys.c:652
fill_super+0x118b/0x2310 fs/gfs2/ops_fstype.c:1122
gfs2_mount+0x439/0x510 fs/gfs2/ops_fstype.c:1335
mount_fs+0x92/0x2a0 fs/super.c:1237
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:2549 [inline]
do_mount+0xe53/0x2a00 fs/namespace.c:2879
SYSC_mount fs/namespace.c:3095 [inline]
SyS_mount+0xa8/0x120 fs/namespace.c:3072
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x467afa
RSP: 002b:00007f9484e6ffa8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 0000000000467afa
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f9484e70000
RBP: 00007f9484e70040 R08: 00007f9484e70040 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020000000
R13: 0000000020000100 R14: 00007f9484e70000 R15: 0000000020047a20
Kernel Offset: disabled
Rebooting in 86400 seconds..