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' ------------[ cut here ]------------ ------------[ cut here ]------------ WARNING: CPU: 1 PID: 7987 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30 WARNING: CPU: 0 PID: 7991 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 ... Modules linked in: CPU: 1 PID: 7987 Comm: syz-executor286 Not tainted 4.14.282-syzkaller #0 CPU: 0 PID: 7991 Comm: syz-executor286 Not tainted 4.14.282-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: task: ffff888095b3c540 task.stack: ffff8880b3d88000 __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30 panic+0x1f9/0x42d kernel/panic.c:183 RSP: 0018:ffff8880b3d8f728 EFLAGS: 00010282 RAX: 000000000000003a RBX: ffff888096ca9c90 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff878bc600 RDI: ffffed10167b1edb __warn.cold+0x20/0x44 kernel/panic.c:547 RBP: ffff8880b316adc0 R08: 000000000000003a R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff888238c29e00 R13: ffff8880af99a500 R14: ffff888096ca9c98 R15: ffff88809e121c58 report_bug+0x208/0x250 lib/bug.c:183 FS: 0000555556e8d300(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: 00007febc7fb2d60 CR3: 00000000a577b000 CR4: 00000000003406f0 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+0x17/0x26 fs/sysfs/dir.c:30 sysfs_create_dir_ns+0x16f/0x1d0 fs/sysfs/dir.c:59 RSP: 0018:ffff88809591f728 EFLAGS: 00010282 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 RAX: 000000000000003a RBX: ffff8880b4afdc10 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff878bc600 RDI: ffffed1012b23edb RBP: ffff8880b37761c0 R08: 000000000000003a R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff888238c29e00 gfs2_sys_fs_add+0x184/0x3f0 fs/gfs2/sys.c:652 R13: ffff8880afdb7f40 R14: ffff8880b4afdc18 R15: ffff8880b4659bd8 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 fill_super+0x118b/0x2310 fs/gfs2/ops_fstype.c:1122 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 gfs2_mount+0x439/0x510 fs/gfs2/ops_fstype.c:1335 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:1335 mount_fs+0x92/0x2a0 fs/super.c:1237 vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046 SYSC_mount fs/namespace.c:3121 [inline] SyS_mount+0xa8/0x120 fs/namespace.c:3098 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2572 [inline] do_mount+0xe65/0x2a30 fs/namespace.c:2905 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7febc7fdf4aa RSP: 002b:00007ffe28353208 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007ffe28353260 RCX: 00007febc7fdf4aa SYSC_mount fs/namespace.c:3121 [inline] SyS_mount+0xa8/0x120 fs/namespace.c:3098 RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffe28353220 RBP: 00007ffe28353220 R08: 00007ffe28353260 R09: 0000000000000002 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 R10: 0000000000000000 R11: 0000000000000282 R12: 000000002000dca0 entry_SYSCALL_64_after_hwframe+0x46/0xbb R13: 0000000000000003 R14: 0000000000000004 R15: 000000000000091c RIP: 0033:0x7febc7fdf4aa Code: RSP: 002b:00007ffe28353208 EFLAGS: 00000282 bd ORIG_RAX: 00000000000000a5 ea RAX: ffffffffffffffda RBX: 00007ffe28353260 RCX: 00007febc7fdf4aa ff RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffe28353220 ff RBP: 00007ffe28353220 R08: 00007ffe28353260 R09: 0000000000000002 R10: 0000000000000000 R11: 0000000000000282 R12: 000000002000dca0 ff R13: 0000000000000003 R14: 0000000000000004 R15: 000000000000091c e9 db e6 9f fa 4c 89 ff e8 10 09 7b fa eb da e8 69 50 51 fa 4c 89 ea 48 89 ee 48 c7 c7 c0 b8 95 87 e8 ff fb fe ff <0f> 0b 48 89 ef 5d 41 5c 41 5d e9 b8 de 7a fa e8 43 50 51 fa 4d ---[ end trace c0c299556481cd2c ]--- Kernel Offset: disabled Rebooting in 86400 seconds..