gfs2: fsid=syz:syz: Trying to join cluster "lock_dlm", "syz:syz" sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' dlm: no local IP address has been set ------------[ cut here ]------------ WARNING: CPU: 1 PID: 10462 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: 1 PID: 10462 Comm: syz-executor.2 Not tainted 4.14.307-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023 Call Trace: ------------[ cut here ]------------ __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 WARNING: CPU: 0 PID: 10461 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30 panic+0x21d/0x451 kernel/panic.c:247 Modules linked in: CPU: 0 PID: 10461 Comm: syz-executor.4 Not tainted 4.14.307-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023 check_panic_on_warn.cold+0x19/0x35 kernel/panic.c:171 task: ffff888091450080 task.stack: ffff888097598000 __warn+0xdf/0x1e0 kernel/panic.c:603 RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30 RSP: 0018:ffff88809759f728 EFLAGS: 00010282 RAX: 000000000000003a RBX: ffff88808f86d3d0 RCX: 0000000000000000 report_bug+0x208/0x250 lib/bug.c:183 RDX: 000000000000be69 RSI: ffffffff814443b0 RDI: ffffed1012eb3edb 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 RBP: ffff8880b0aa4240 R08: 000000000000003a R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880b0814700 R13: ffff8880a52f6a80 R14: ffff88808f86d3d8 R15: ffff88805ec21618 FS: 00007f1cfd358700(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:967 CR2: 00007f0c90800000 CR3: 00000000b53e6000 CR4: 00000000003406f0 RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 RSP: 0018:ffff888095677728 EFLAGS: 00010282 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: RAX: 000000000000003a RBX: ffff88805ec21610 RCX: 0000000000000000 RDX: 000000000000c671 RSI: ffffffff814443b0 RDI: ffffed1012aceedb sysfs_create_dir_ns+0x16f/0x1d0 fs/sysfs/dir.c:59 RBP: ffff88805c11ce40 R08: 000000000000003a R09: 0000000000000000 create_dir lib/kobject.c:71 [inline] kobject_add_internal+0x28b/0x930 lib/kobject.c:229 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880b0814700 kobject_add_varg lib/kobject.c:364 [inline] kobject_init_and_add+0xde/0x120 lib/kobject.c:436 R13: ffff8880b4683600 R14: ffff88805ec21618 R15: ffff88805f32d658 gfs2_sys_fs_add+0x184/0x3f0 fs/gfs2/sys.c:652 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 fill_super+0x118b/0x2310 fs/gfs2/ops_fstype.c:1127 gfs2_sys_fs_add+0x184/0x3f0 fs/gfs2/sys.c:652 fill_super+0x118b/0x2310 fs/gfs2/ops_fstype.c:1127 gfs2_mount+0x439/0x510 fs/gfs2/ops_fstype.c:1340 mount_fs+0x92/0x2a0 fs/super.c:1237 vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046 gfs2_mount+0x439/0x510 fs/gfs2/ops_fstype.c:1340 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2572 [inline] do_mount+0xe65/0x2a30 fs/namespace.c:2905 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: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 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 RIP: 0033:0x7f1cfede762a RSP: 002b:00007f1cfd357f88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 000000000001f65e RCX: 00007f1cfede762a SYSC_mount fs/namespace.c:3121 [inline] SyS_mount+0xa8/0x120 fs/namespace.c:3098 RDX: 000000002001f680 RSI: 000000002001f6c0 RDI: 00007f1cfd357fe0 RBP: 00007f1cfd358020 R08: 00007f1cfd358020 R09: 0000000000000000 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 R10: 0000000000000000 R11: 0000000000000202 R12: 000000002001f680 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 R13: 000000002001f6c0 R14: 00007f1cfd357fe0 R15: 000000002001f700 RIP: 0033:0x7f1682c2b62a Code: RSP: 002b:00007f168119bf88 EFLAGS: 00000202 bd ORIG_RAX: 00000000000000a5 ea RAX: ffffffffffffffda RBX: 000000000003b285 RCX: 00007f1682c2b62a ff RDX: 000000002003b2c0 RSI: 000000002003b300 RDI: 00007f168119bfe0 RBP: 00007f168119c020 R08: 00007f168119c020 R09: 0000000000000000 ff R10: 0000000000000000 R11: 0000000000000202 R12: 000000002003b2c0 ff R13: 000000002003b300 R14: 00007f168119bfe0 R15: 000000002003b340 e9 ff 95 9f fa 4c 89 ff e8 64 ae 7a fa eb da e8 ed ea 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 3c 84 7a fa e8 c7 ea 50 fa 4d ---[ end trace 8297e5b9b2d613a7 ]--- Kernel Offset: disabled Rebooting in 86400 seconds..