R13: 00007f11f7aa9fdc R14: 00007f11f7aa9fe0 R15: 0000000020000302 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' ------------[ cut here ]------------ WARNING: CPU: 1 PID: 11119 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30 ------------[ cut here ]------------ Kernel panic - not syncing: kernel: panic_on_warn set ... WARNING: CPU: 0 PID: 11121 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30 CPU: 1 PID: 11119 Comm: syz-executor.2 Not tainted 4.14.307-syzkaller #0 Modules linked in: Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023 Call Trace: CPU: 0 PID: 11121 Comm: syz-executor.1 Not tainted 4.14.307-syzkaller #0 __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023 panic+0x21d/0x451 kernel/panic.c:247 task: ffff888056860440 task.stack: ffff888090498000 RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30 RSP: 0018:ffff88809049f728 EFLAGS: 00010282 RAX: 000000000000003a RBX: ffff888094104210 RCX: 0000000000000000 check_panic_on_warn.cold+0x19/0x35 kernel/panic.c:171 RDX: 00000000000246dd RSI: ffffffff814443b0 RDI: ffffed1012093edb __warn+0xdf/0x1e0 kernel/panic.c:603 RBP: ffff8880af7d41c0 R08: 000000000000003a R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880b139fb60 R13: ffff8880b36a5040 R14: ffff888094104218 R15: ffff88805588c558 report_bug+0x208/0x250 lib/bug.c:183 FS: 00007fd049cce700(0000) GS:ffff8880ba400000(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: 000000c010a06c00 CR3: 000000009540b000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:967 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 RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30 kobject_add_varg lib/kobject.c:364 [inline] kobject_init_and_add+0xde/0x120 lib/kobject.c:436 RSP: 0018:ffff888095387728 EFLAGS: 00010282 RAX: 000000000000003a RBX: ffff88805588c550 RCX: 0000000000000000 gfs2_sys_fs_add+0x184/0x3f0 fs/gfs2/sys.c:652 RDX: 0000000000014ae1 RSI: ffffffff814443b0 RDI: ffffed1012a70edb RBP: ffff888095d8cb80 R08: 000000000000003a R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880b139fb60 R13: ffff8880a88a2d80 R14: ffff88805588c558 R15: ffff888057b38398 fill_super+0x118b/0x2310 fs/gfs2/ops_fstype.c:1127 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 gfs2_mount+0x439/0x510 fs/gfs2/ops_fstype.c:1340 fill_super+0x118b/0x2310 fs/gfs2/ops_fstype.c:1127 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 gfs2_mount+0x439/0x510 fs/gfs2/ops_fstype.c:1340 SYSC_mount fs/namespace.c:3121 [inline] SyS_mount+0xa8/0x120 fs/namespace.c:3098 mount_fs+0x92/0x2a0 fs/super.c:1237 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2572 [inline] do_mount+0xe65/0x2a30 fs/namespace.c:2905 RIP: 0033:0x7fd04b75d62a RSP: 002b:00007fd049ccdf88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00000000000474f7 RCX: 00007fd04b75d62a RDX: 0000000020047500 RSI: 0000000020047540 RDI: 00007fd049ccdfe0 RBP: 00007fd049cce020 R08: 00007fd049cce020 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020047500 R13: 0000000020047540 R14: 00007fd049ccdfe0 R15: 0000000020047580 Code: SYSC_mount fs/namespace.c:3121 [inline] SyS_mount+0xa8/0x120 fs/namespace.c:3098 bd ea do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 ff entry_SYSCALL_64_after_hwframe+0x5e/0xd3 ff RIP: 0033:0x7f1f9ceec62a ff RSP: 002b:00007f1f9b45cf88 EFLAGS: 00000202 e9 ORIG_RAX: 00000000000000a5 ff RAX: ffffffffffffffda RBX: 00000000000133f0 RCX: 00007f1f9ceec62a 95 RDX: 0000000020013400 RSI: 0000000020013440 RDI: 00007f1f9b45cfe0 9f RBP: 00007f1f9b45d020 R08: 00007f1f9b45d020 R09: 0000000000000000 fa R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020013400 4c R13: 0000000020013440 R14: 00007f1f9b45cfe0 R15: 0000000020013480 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 30b7f6d15e8c98ac ]--- Kernel Offset: disabled Rebooting in 86400 seconds..