sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' ------------[ cut here ]------------ sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' WARNING: CPU: 1 PID: 8000 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x2d fs/sysfs/dir.c:30 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 8000 Comm: syz-executor107 Not tainted 4.14.203-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ------------[ cut here ]------------ Call Trace: WARNING: CPU: 0 PID: 7998 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x2d fs/sysfs/dir.c:30 __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x283 lib/dump_stack.c:58 Modules linked in: panic+0x1f9/0x42d kernel/panic.c:183 CPU: 0 PID: 7998 Comm: syz-executor107 Not tainted 4.14.203-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8880b2a58040 task.stack: ffff8880b3008000 RIP: 0010:sysfs_warn_dup.cold+0x17/0x2d fs/sysfs/dir.c:30 __warn.cold+0x20/0x4b kernel/panic.c:547 RSP: 0018:ffff8880b300f728 EFLAGS: 00010282 RAX: 000000000000003a RBX: ffff888095b50a10 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff878bb940 RDI: ffffed1016601edb RBP: ffff8880b2a7e000 R08: 000000000000003a R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880b11c3b60 report_bug+0x208/0x249 lib/bug.c:186 R13: ffff8880af5cf0c0 R14: ffff888095b50a18 R15: ffff888095490998 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 FS: 0000000001b7c880(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffc4de6dbe8 CR3: 000000009b1a0000 CR4: 00000000001406f0 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+0x17/0x2d fs/sysfs/dir.c:30 sysfs_create_dir_ns+0x16f/0x1d0 fs/sysfs/dir.c:59 RSP: 0018:ffff888095417728 EFLAGS: 00010282 create_dir lib/kobject.c:71 [inline] kobject_add_internal+0x28b/0x930 lib/kobject.c:229 RAX: 000000000000003a RBX: ffff888095490990 RCX: 0000000000000000 kobject_add_varg lib/kobject.c:364 [inline] kobject_init_and_add+0xde/0x120 lib/kobject.c:436 RDX: 0000000000000000 RSI: ffffffff87cccc60 RDI: ffffed1012a82edb RBP: ffff8880b301e0c0 R08: 000000000000003a R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880b11c3b60 gfs2_sys_fs_add+0x184/0x3f0 fs/gfs2/sys.c:652 R13: ffff8880afb26780 R14: ffff888095490998 R15: ffff8880955189d8 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:1118 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:1118 gfs2_mount+0x439/0x502 fs/gfs2/ops_fstype.c:1331 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 gfs2_mount+0x439/0x502 fs/gfs2/ops_fstype.c:1331 mount_fs+0x92/0x2a0 fs/super.c:1237 vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046 SYSC_mount fs/namespace.c:3095 [inline] SyS_mount+0xa8/0x120 fs/namespace.c:3072 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2549 [inline] do_mount+0xe53/0x2a00 fs/namespace.c:2879 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x45c57a RSP: 002b:00007ffef6d2e0c8 EFLAGS: 00000293 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007ffef6d2e120 RCX: 000000000045c57a SYSC_mount fs/namespace.c:3095 [inline] SyS_mount+0xa8/0x120 fs/namespace.c:3072 RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffef6d2e0e0 RBP: 00007ffef6d2e0e0 R08: 00007ffef6d2e120 R09: 0000000000000000 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 R10: 0000000000000000 R11: 0000000000000293 R12: 000000000000091c entry_SYSCALL_64_after_hwframe+0x46/0xbb R13: 0000000000000004 R14: 0000000000000003 R15: 0000000000000003 RIP: 0033:0x45c57a Code: RSP: 002b:00007ffef6d2e0c8 EFLAGS: 00000293 ORIG_RAX: 00000000000000a5 19 RAX: ffffffffffffffda RBX: 00007ffef6d2e120 RCX: 000000000045c57a f2 RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffef6d2e0e0 RBP: 00007ffef6d2e0e0 R08: 00007ffef6d2e120 R09: 0000000000000000 8b R10: 0000000000000000 R11: 0000000000000293 R12: 000000000000091c e8 R13: 0000000000000004 R14: 0000000000000003 R15: 0000000000000003 99 06 db ff eb d8 e8 92 06 db ff e9 6d ff ff ff e8 c8 34 b1 ff 4c 89 ea 48 89 ee 48 c7 c7 20 a0 95 87 e8 57 c1 9f ff <0f> 0b 48 89 ef 5d 41 5c 41 5d e9 a7 db da ff 90 90 90 90 90 90 ---[ end trace 26cb5ae9515b6bb3 ]--- Kernel Offset: disabled Rebooting in 86400 seconds..