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' gfs2: fsid=syz:syz: Now mounting FS... ------------[ cut here ]------------ WARNING: CPU: 1 PID: 7975 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30 ------------[ cut here ]------------ Kernel panic - not syncing: panic_on_warn set ... WARNING: CPU: 0 PID: 7983 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30 CPU: 1 PID: 7975 Comm: syz-executor716 Not tainted 4.14.232-syzkaller #0 Modules linked in: 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+0x1b2/0x281 lib/dump_stack.c:58 CPU: 0 PID: 7983 Comm: syz-executor716 Not tainted 4.14.232-syzkaller #0 panic+0x1f9/0x42d kernel/panic.c:183 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8880b3ac2180 task.stack: ffff8880b34d0000 RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30 RSP: 0018:ffff8880b34d7728 EFLAGS: 00010282 __warn.cold+0x20/0x44 kernel/panic.c:547 RAX: 000000000000003a RBX: ffff88809c7fdd90 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff878bbbc0 RDI: ffffed101669aedb RBP: ffff8880b3c220c0 R08: 000000000000003a R09: 0000000000000000 report_bug+0x208/0x250 lib/bug.c:186 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880b127d8c0 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 R13: ffff88809b7cd000 R14: ffff88809c7fdd98 R15: ffff88809c675d58 FS: 0000000000d21300(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc98217d000 CR3: 00000000ac3b3000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:964 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30 Call Trace: RSP: 0018:ffff8880b344f728 EFLAGS: 00010282 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 RAX: 000000000000003a RBX: ffff88809c675d50 RCX: 0000000000000000 kobject_add_varg lib/kobject.c:364 [inline] kobject_init_and_add+0xde/0x120 lib/kobject.c:436 RDX: 0000000000000000 RSI: ffffffff878bbbc0 RDI: ffffed1016689edb RBP: ffff88809a106ec0 R08: 000000000000003a R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880b127d8c0 gfs2_sys_fs_add+0x184/0x3f0 fs/gfs2/sys.c:652 R13: ffff8880a8ce1840 R14: ffff88809c675d58 R15: ffff88809c539d18 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:2549 [inline] do_mount+0xe53/0x2a00 fs/namespace.c:2879 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: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: 0033:0x45a2fa RSP: 002b:00007ffc905eb098 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007ffc905eb0f0 RCX: 000000000045a2fa SYSC_mount fs/namespace.c:3095 [inline] SyS_mount+0xa8/0x120 fs/namespace.c:3072 RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffc905eb0b0 RBP: 00007ffc905eb0b0 R08: 00007ffc905eb0f0 R09: 0000000000000000 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: 0033:0x45a2fa Code: RSP: 002b:00007ffc905eb098 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 bd RAX: ffffffffffffffda RBX: 00007ffc905eb0f0 RCX: 000000000045a2fa ea RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffc905eb0b0 ff RBP: 00007ffc905eb0b0 R08: 00007ffc905eb0f0 R09: 0000000000000000 ff R10: 0000000000000000 R11: 0000000000000282 R12: 000000002000dca0 ff R13: 0000000000000003 R14: 0000000000000004 R15: 000000000000091c e9 c6 57 a1 fa 4c 89 ff e8 2b 8a 7c fa eb da e8 f4 e4 52 fa 4c 89 ea 48 89 ee 48 c7 c7 40 a9 95 87 e8 16 fc fe ff <0f> 0b 48 89 ef 5d 41 5c 41 5d e9 d3 5f 7c fa e8 ce e4 52 fa 4d ---[ end trace 1cf8d2630ea0534e ]--- Kernel Offset: disabled Rebooting in 86400 seconds..