gfs2: fsid=syz:syz: Trying to join cluster "lock_dlm", "syz:syz" sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' ------------[ cut here ]------------ WARNING: CPU: 0 PID: 7965 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: 7965 Comm: syz-executor166 Not tainted 4.14.305-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 panic+0x21d/0x451 kernel/panic.c:247 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 sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' 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 RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30 sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' RSP: 0018:ffff8880b3777728 EFLAGS: 00010282 RAX: 000000000000003a RBX: ffff8880954a9b50 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff87cd1740 RDI: ffffed10166eeedb RBP: ffff8880b3270a00 R08: 000000000000003a R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880b0ec77e0 R13: ffff8880b2d94c80 R14: ffff8880954a9b58 R15: ffff8880b28b5b98 sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' 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 dlm: no local IP address has been set gfs2_sys_fs_add+0x184/0x3f0 fs/gfs2/sys.c:652 sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' fill_super+0x118b/0x2310 fs/gfs2/ops_fstype.c:1127 dlm: cannot start dlm lowcomms -107 ------------[ cut here ]------------ WARNING: CPU: 1 PID: 7964 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30 Modules linked in: CPU: 1 PID: 7964 Comm: syz-executor166 Not tainted 4.14.305-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 gfs2_mount+0x439/0x510 fs/gfs2/ops_fstype.c:1340 task: ffff888098198400 task.stack: ffff888095d78000 RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30 RSP: 0018:ffff888095d7f728 EFLAGS: 00010282 RAX: 000000000000003a RBX: ffff8880b2c71c10 RCX: 0000000000000000 mount_fs+0x92/0x2a0 fs/super.c:1237 RDX: 0000000000000000 RSI: ffffffff878bd360 RDI: ffffed1012bafedb vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046 RBP: ffff8880b28681c0 R08: 000000000000003a R09: 0000000000000001 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2572 [inline] do_mount+0xe65/0x2a30 fs/namespace.c:2905 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880b0ec77e0 R13: ffff8880b4f6d200 R14: ffff8880b2c71c18 R15: ffff8880b2ecdbd8 FS: 0000555556952300(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000561d6d977000 CR3: 00000000b02f3000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 SYSC_mount fs/namespace.c:3121 [inline] SyS_mount+0xa8/0x120 fs/namespace.c:3098 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 sysfs_create_dir_ns+0x16f/0x1d0 fs/sysfs/dir.c:59 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 create_dir lib/kobject.c:71 [inline] kobject_add_internal+0x28b/0x930 lib/kobject.c:229 RIP: 0033:0x7f4a0e52f6da kobject_add_varg lib/kobject.c:364 [inline] kobject_init_and_add+0xde/0x120 lib/kobject.c:436 RSP: 002b:00007ffcaaa0e468 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f4a0e52f6da gfs2_sys_fs_add+0x184/0x3f0 fs/gfs2/sys.c:652 RDX: 000000002003b280 RSI: 000000002003b2c0 RDI: 00007ffcaaa0e480 RBP: 00007ffcaaa0e480 R08: 00007ffcaaa0e4c0 R09: 0000000000000002 R10: 0000000000000000 R11: 0000000000000282 R12: 0000000000000004 R13: 00005555569522c0 R14: 0000000000000000 R15: 00007ffcaaa0e4c0 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 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: 0033:0x7f4a0e52f6da RSP: 002b:00007ffcaaa0e468 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f4a0e52f6da RDX: 000000002003b280 RSI: 000000002003b2c0 RDI: 00007ffcaaa0e480 RBP: 00007ffcaaa0e480 R08: 00007ffcaaa0e4c0 R09: 0000000000000002 R10: 0000000000000000 R11: 0000000000000282 R12: 0000000000000004 R13: 00005555569522c0 R14: 0000000000000000 R15: 00007ffcaaa0e4c0 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 2c005640373d26d9 ]--- Kernel Offset: disabled Rebooting in 86400 seconds..