gfs2: fsid=_d: Trying to join cluster "lock_nolock", "_d" sysfs: cannot create duplicate filename '/fs/gfs2/_d' sysfs: cannot create duplicate filename '/fs/gfs2/_d' ------------[ cut here ]------------ WARNING: CPU: 1 PID: 7950 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 ... ------------[ cut here ]------------ CPU: 1 PID: 7950 Comm: syz-executor862 Not tainted 4.14.230-syzkaller #0 WARNING: CPU: 0 PID: 7949 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Modules linked in: Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 CPU: 0 PID: 7949 Comm: syz-executor862 Not tainted 4.14.230-syzkaller #0 panic+0x1f9/0x42d kernel/panic.c:183 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8880b50343c0 task.stack: ffff8880975d8000 RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30 RSP: 0018:ffff8880975df728 EFLAGS: 00010282 __warn.cold+0x20/0x44 kernel/panic.c:547 RAX: 0000000000000035 RBX: ffff8880a4af4dd0 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff878bbbc0 RDI: ffffed1012ebbedb RBP: ffff8880963f2ec0 R08: 0000000000000035 R09: 0000000000000000 report_bug+0x208/0x250 lib/bug.c:186 R10: 0000000000000000 R11: 0000000000000000 R12: ffff888238f882a0 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 R13: ffff8880b4693300 R14: ffff8880a4af4dd8 R15: ffff88809d5556d8 FS: 000000000072d300(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1811fb2130 CR3: 00000000a6e36000 CR4: 00000000001406f0 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:964 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 RSP: 0018:ffff888096797728 EFLAGS: 00010282 Call Trace: RAX: 0000000000000035 RBX: ffff88809d5556d0 RCX: 0000000000000000 sysfs_create_dir_ns+0x16f/0x1d0 fs/sysfs/dir.c:59 RDX: 0000000000000000 RSI: ffffffff878bbbc0 RDI: ffffed1012cf2edb create_dir lib/kobject.c:71 [inline] kobject_add_internal+0x28b/0x930 lib/kobject.c:229 RBP: ffff8880961806c0 R08: 0000000000000035 R09: 0000000000000000 kobject_add_varg lib/kobject.c:364 [inline] kobject_init_and_add+0xde/0x120 lib/kobject.c:436 R10: 0000000000000000 R11: 0000000000000000 R12: ffff888238f882a0 R13: ffff8880aff4eec0 R14: ffff88809d5556d8 R15: ffff88809daf17d8 sysfs_create_dir_ns+0x16f/0x1d0 fs/sysfs/dir.c:59 gfs2_sys_fs_add+0x184/0x3f0 fs/gfs2/sys.c:652 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 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 gfs2_mount+0x439/0x510 fs/gfs2/ops_fstype.c:1335 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 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: 0033:0x4459aa SYSC_mount fs/namespace.c:3095 [inline] SyS_mount+0xa8/0x120 fs/namespace.c:3072 RSP: 002b:00007ffd8ae14a68 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004459aa entry_SYSCALL_64_after_hwframe+0x46/0xbb RDX: 0000000020000200 RSI: 0000000020000240 RDI: 00007ffd8ae14a70 RIP: 0033:0x4459aa RBP: 00007ffd8ae14a70 R08: 00007ffd8ae14ab0 R09: 6f6f6c2f7665642f RSP: 002b:00007ffd8ae14a68 EFLAGS: 00000282 R10: 0000000000000000 R11: 0000000000000282 R12: 0000000000000004 ORIG_RAX: 00000000000000a5 R13: 0000000000000000 R14: 00007ffd8ae14ab0 R15: 00007ffd8ae14c00 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004459aa Code: RDX: 0000000020000200 RSI: 0000000020000240 RDI: 00007ffd8ae14a70 bd RBP: 00007ffd8ae14a70 R08: 00007ffd8ae14ab0 R09: 6f6f6c2f7665642f ea R10: 0000000000000000 R11: 0000000000000282 R12: 0000000000000004 ff R13: 0000000000000000 R14: 00007ffd8ae14ab0 R15: 00007ffd8ae14c00 ff ff e9 e6 9c a1 fa 4c 89 ff e8 ab d0 7c fa eb da e8 14 2c 53 fa 4c 89 ea 48 89 ee 48 c7 c7 40 a9 95 87 e8 16 fc fe ff <0f> 0b 48 89 ef 5d 41 5c 41 5d e9 53 a6 7c fa e8 ee 2b 53 fa 4d ---[ end trace 9c8c685236c162ba ]--- Kernel Offset: disabled Rebooting in 86400 seconds..