sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' ------------[ cut here ]------------ gfs2: fsid=syz:syz: Now mounting FS... WARNING: CPU: 1 PID: 6356 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: 6356 Comm: syz-executor027 Not tainted 4.14.198-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x283 lib/dump_stack.c:58 panic+0x1f9/0x42d kernel/panic.c:183 ------------[ cut here ]------------ WARNING: CPU: 0 PID: 6359 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x2d fs/sysfs/dir.c:30 Modules linked in: __warn.cold+0x20/0x4b kernel/panic.c:547 CPU: 0 PID: 6359 Comm: syz-executor027 Not tainted 4.14.198-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff88809d808340 task.stack: ffff888097b80000 report_bug+0x208/0x249 lib/bug.c:186 RIP: 0010:sysfs_warn_dup.cold+0x17/0x2d fs/sysfs/dir.c:30 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 RSP: 0018:ffff888097b87728 EFLAGS: 00010282 RAX: 000000000000003a RBX: ffff888097390790 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff86ac12c0 RDI: ffffed1012f70edb invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:964 RBP: ffff88809727cdc0 R08: 000000000000003a R09: 0000000000000000 RIP: 0010:sysfs_warn_dup.cold+0x17/0x2d fs/sysfs/dir.c:30 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8882190f29a0 RSP: 0018:ffff888089ccf728 EFLAGS: 00010282 R13: ffff8880a7f31b40 R14: ffff8880973907b0 R15: ffff888096ddc758 FS: 00000000017b3880(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000 RAX: 000000000000003a RBX: ffff888096c386d0 RCX: 0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 RDX: 0000000000000000 RSI: ffffffff86ac12c0 RDI: ffffed1011399edb RBP: ffff888097644e80 R08: 000000000000003a R09: 0000000000000000 CR2: 000056319e576000 CR3: 0000000090d56000 CR4: 00000000001406f0 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8882190f29a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 R13: ffff888097d2ed80 R14: ffff888096c386f0 R15: ffff888097204698 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: sysfs_create_dir_ns+0x16f/0x1d0 fs/sysfs/dir.c:59 sysfs_create_dir_ns+0x16f/0x1d0 fs/sysfs/dir.c:59 create_dir lib/kobject.c:71 [inline] kobject_add_internal+0x279/0x810 lib/kobject.c:229 create_dir lib/kobject.c:71 [inline] kobject_add_internal+0x279/0x810 lib/kobject.c:229 kobject_add_varg lib/kobject.c:364 [inline] kobject_init_and_add+0xde/0x120 lib/kobject.c:436 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_sys_fs_add+0x184/0x3f0 fs/gfs2/sys.c:652 fill_super+0x118b/0x2310 fs/gfs2/ops_fstype.c:1118 fill_super+0x118b/0x2310 fs/gfs2/ops_fstype.c:1118 gfs2_mount+0x439/0x502 fs/gfs2/ops_fstype.c:1331 gfs2_mount+0x439/0x502 fs/gfs2/ops_fstype.c:1331 mount_fs+0x92/0x2a0 fs/super.c:1237 mount_fs+0x92/0x2a0 fs/super.c:1237 vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046 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 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2549 [inline] do_mount+0xe53/0x2a00 fs/namespace.c:2879 SYSC_mount fs/namespace.c:3095 [inline] SyS_mount+0xa8/0x120 fs/namespace.c:3072 SYSC_mount fs/namespace.c:3095 [inline] SyS_mount+0xa8/0x120 fs/namespace.c:3072 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 RIP: 0033:0x45c57a entry_SYSCALL_64_after_hwframe+0x46/0xbb RSP: 002b:00007fff1baf8dc8 EFLAGS: 00000293 ORIG_RAX: 00000000000000a5 RIP: 0033:0x45c57a RAX: ffffffffffffffda RBX: 00007fff1baf8e20 RCX: 000000000045c57a RSP: 002b:00007fff1baf8dc8 EFLAGS: 00000293 RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fff1baf8de0 ORIG_RAX: 00000000000000a5 RBP: 00007fff1baf8de0 R08: 00007fff1baf8e20 R09: 0000000000000000 RAX: ffffffffffffffda RBX: 00007fff1baf8e20 RCX: 000000000045c57a R10: 0000000000000000 R11: 0000000000000293 R12: 000000000000091c RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fff1baf8de0 R13: 0000000000000004 R14: 0000000000000003 R15: 0000000000000003 RBP: 00007fff1baf8de0 R08: 00007fff1baf8e20 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 000000000000091c R13: 0000000000000004 R14: 0000000000000003 R15: 0000000000000003 Code: 56 61 8a e8 59 41 db ff eb d8 e8 52 41 db ff e9 6d ff ff ff e8 08 6e b1 ff 4c 89 ea 48 89 ee 48 c7 c7 a0 9d b5 86 e8 57 0d a0 ff <0f> 0b 48 89 ef 5d 41 5c 41 5d e9 67 16 db ff 90 90 90 90 90 90 ---[ end trace d5f00a3c5f291f92 ]--- Kernel Offset: disabled Rebooting in 86400 seconds..