gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' ------------[ cut here ]------------ WARNING: CPU: 0 PID: 6360 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x2d fs/sysfs/dir.c:30 ------------[ cut here ]------------ Kernel panic - not syncing: panic_on_warn set ... WARNING: CPU: 1 PID: 6356 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x2d fs/sysfs/dir.c:30 CPU: 0 PID: 6360 Comm: syz-executor662 Not tainted 4.14.198-syzkaller #0 Modules linked in: Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: CPU: 1 PID: 6356 Comm: syz-executor662 Not tainted 4.14.198-syzkaller #0 __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x283 lib/dump_stack.c:58 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 panic+0x1f9/0x42d kernel/panic.c:183 task: ffff8880875d6280 task.stack: ffff888097aa0000 RIP: 0010:sysfs_warn_dup.cold+0x17/0x2d fs/sysfs/dir.c:30 RSP: 0018:ffff888097aa7728 EFLAGS: 00010282 RAX: 000000000000003a RBX: ffff8880979186d0 RCX: 0000000000000000 __warn.cold+0x20/0x4b kernel/panic.c:547 RDX: 0000000000000000 RSI: ffffffff86ac12c0 RDI: ffffed1012f54edb RBP: ffff888099f4e740 R08: 000000000000003a R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff888219193c40 report_bug+0x208/0x249 lib/bug.c:186 R13: ffff8880a10f7400 R14: ffff8880979186f0 R15: ffff88809c034698 FS: 0000000001d78880(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000 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 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fffc2345ff8 CR3: 000000009e7f4000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:964 Call Trace: RIP: 0010:sysfs_warn_dup.cold+0x17/0x2d fs/sysfs/dir.c:30 sysfs_create_dir_ns+0x16f/0x1d0 fs/sysfs/dir.c:59 RSP: 0018:ffff8880978ef728 EFLAGS: 00010282 create_dir lib/kobject.c:71 [inline] kobject_add_internal+0x279/0x810 lib/kobject.c:229 RAX: 000000000000003a RBX: ffff888090664750 RCX: 0000000000000000 kobject_add_varg lib/kobject.c:364 [inline] kobject_init_and_add+0xde/0x120 lib/kobject.c:436 RDX: 0000000000000000 RSI: ffffffff86ac12c0 RDI: ffffed1012f1dedb RBP: ffff88809e248840 R08: 000000000000003a R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff888219193c40 gfs2_sys_fs_add+0x184/0x3f0 fs/gfs2/sys.c:652 R13: ffff88809b3b6b00 R14: ffff888090664770 R15: ffff8880979186d8 sysfs_create_dir_ns+0x16f/0x1d0 fs/sysfs/dir.c:59 create_dir lib/kobject.c:71 [inline] kobject_add_internal+0x279/0x810 lib/kobject.c:229 fill_super+0x118b/0x2310 fs/gfs2/ops_fstype.c:1118 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:1118 gfs2_mount+0x439/0x502 fs/gfs2/ops_fstype.c:1331 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 gfs2_mount+0x439/0x502 fs/gfs2/ops_fstype.c:1331 mount_fs+0x92/0x2a0 fs/super.c:1237 SYSC_mount fs/namespace.c:3095 [inline] SyS_mount+0xa8/0x120 fs/namespace.c:3072 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 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x45c57a RSP: 002b:00007ffca3ac11a8 EFLAGS: 00000293 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007ffca3ac1200 RCX: 000000000045c57a SYSC_mount fs/namespace.c:3095 [inline] SyS_mount+0xa8/0x120 fs/namespace.c:3072 RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffca3ac11c0 RBP: 00007ffca3ac11c0 R08: 00007ffca3ac1200 R09: 0000000000000000 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 R10: 0000000000000000 R11: 0000000000000293 R12: 000000000000091c entry_SYSCALL_64_after_hwframe+0x46/0xbb R13: 0000000000000004 R14: 0000000000000003 R15: 0000000000000003 RIP: 0033:0x45c57a Code: RSP: 002b:00007ffca3ac11a8 EFLAGS: 00000293 56 ORIG_RAX: 00000000000000a5 61 RAX: ffffffffffffffda RBX: 00007ffca3ac1200 RCX: 000000000045c57a 8a RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffca3ac11c0 e8 RBP: 00007ffca3ac11c0 R08: 00007ffca3ac1200 R09: 0000000000000000 59 R10: 0000000000000000 R11: 0000000000000293 R12: 000000000000091c 41 R13: 0000000000000004 R14: 0000000000000003 R15: 0000000000000003 db ff eb d8 e8 52 41 db ff e9 6d ff ff ff e8 08 6e b1 ff 4c 89 ea 48 89 ee 48 c7 c7 a0 9d b5 86 e8 57 0d a0 ff <0f> 0b 48 89 ef 5d 41 5c 41 5d e9 67 16 db ff 90 90 90 90 90 90 ---[ end trace 2b84ddc123b9dfd0 ]--- Kernel Offset: disabled Rebooting in 86400 seconds..