Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1b9/0x294 lib/dump_stack.c:113 kobject_add_internal failed for _dev_cuse with -EEXIST, don't try to register things with the same name in the same directory. sysfs_warn_dup.cold.3+0x1c/0x2b fs/sysfs/dir.c:30 sysfs_create_dir_ns+0x184/0x1d0 fs/sysfs/dir.c:58 WARNING: CPU: 0 PID: 4473 at lib/kobject.c:238 kobject_add_internal+0x8e0/0xba0 lib/kobject.c:236 create_dir lib/kobject.c:69 [inline] kobject_add_internal+0x353/0xba0 lib/kobject.c:228 Kernel panic - not syncing: panic_on_warn set ... kobject_add_varg lib/kobject.c:364 [inline] kobject_init_and_add+0xed/0x130 lib/kobject.c:435 gfs2_sys_fs_add+0x1ff/0x500 fs/gfs2/sys.c:652 fill_super+0x8c9/0x1a40 fs/gfs2/ops_fstype.c:1118 gfs2_mount+0x5e6/0x712 fs/gfs2/ops_fstype.c:1321 mount_fs+0xae/0x328 fs/super.c:1222 vfs_kern_mount.part.34+0xd4/0x4d0 fs/namespace.c:1037 vfs_kern_mount fs/namespace.c:1027 [inline] do_new_mount fs/namespace.c:2517 [inline] do_mount+0x564/0x3070 fs/namespace.c:2847 ksys_mount+0x12d/0x140 fs/namespace.c:3063 SYSC_mount fs/namespace.c:3077 [inline] SyS_mount+0x35/0x50 fs/namespace.c:3074 do_syscall_64+0x29e/0x9d0 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x44327a RSP: 002b:00007ffea60f1e28 EFLAGS: 00000217 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000044327a RDX: 0000000020000040 RSI: 0000000020000080 RDI: 00007ffea60f1e40 RBP: 0000000000000004 R08: 0000000020001580 R09: 000000000000000a R10: 0000000000200000 R11: 0000000000000217 R12: 0000000000401ce0 R13: 63613d61746f7571 R14: 0030656c69662f2e R15: 6972773d61746164 CPU: 0 PID: 4473 Comm: syzkaller436803 Not tainted 4.16.0+ #4 ------------[ cut here ]------------ Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1b9/0x294 lib/dump_stack.c:113 kobject_add_internal failed for _dev_cuse with -EEXIST, don't try to register things with the same name in the same directory. panic+0x22f/0x4de kernel/panic.c:183 WARNING: CPU: 1 PID: 4475 at lib/kobject.c:238 kobject_add_internal+0x8e0/0xba0 lib/kobject.c:236 Modules linked in: CPU: 1 PID: 4475 Comm: syzkaller436803 Not tainted 4.16.0+ #4 __warn.cold.8+0x163/0x1a3 kernel/panic.c:547 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:kobject_add_internal+0x8e0/0xba0 lib/kobject.c:236 report_bug+0x252/0x2d0 lib/bug.c:186 RSP: 0018:ffff8801ac097480 EFLAGS: 00010286 RAX: 000000000000007e RBX: ffff8801b0565210 RCX: ffffffff815edf6d fixup_bug arch/x86/kernel/traps.c:178 [inline] do_error_trap+0x1de/0x490 arch/x86/kernel/traps.c:296 RDX: 0000000000000000 RSI: ffffffff815f2c21 RDI: ffff8801ac096fe0 RBP: ffff8801ac097578 R08: ffff8801b048e100 R09: 0000000000000006 R10: ffff8801b048e100 R11: 0000000000000000 R12: 00000000ffffffef R13: ffff8801d3a42f48 R14: 1ffff10035812e9a R15: ffff8801d3a42f00 FS: 0000000001754880(0000) GS:ffff8801db100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fee628c0518 CR3: 00000001b0bb2000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:315 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:991 RIP: 0010:kobject_add_internal+0x8e0/0xba0 lib/kobject.c:236 RSP: 0018:ffff8801b147f480 EFLAGS: 00010286 RAX: 000000000000007e RBX: ffff8801b04dd1d0 RCX: ffffffff815edf6d RDX: 0000000000000000 RSI: ffffffff815f2c21 RDI: ffff8801b147efe0 RBP: ffff8801b147f578 R08: ffff8801b0b80080 R09: 0000000000000006 kobject_add_varg lib/kobject.c:364 [inline] kobject_init_and_add+0xed/0x130 lib/kobject.c:435 R10: ffff8801b0b80080 R11: 0000000000000000 R12: 00000000ffffffef R13: ffff8801d3a42f48 R14: 1ffff1003628fe9a R15: ffff8801d3a42f00 gfs2_sys_fs_add+0x1ff/0x500 fs/gfs2/sys.c:652 kobject_add_varg lib/kobject.c:364 [inline] kobject_init_and_add+0xed/0x130 lib/kobject.c:435 fill_super+0x8c9/0x1a40 fs/gfs2/ops_fstype.c:1118 gfs2_sys_fs_add+0x1ff/0x500 fs/gfs2/sys.c:652 fill_super+0x8c9/0x1a40 fs/gfs2/ops_fstype.c:1118 gfs2_mount+0x5e6/0x712 fs/gfs2/ops_fstype.c:1321 mount_fs+0xae/0x328 fs/super.c:1222 vfs_kern_mount.part.34+0xd4/0x4d0 fs/namespace.c:1037 vfs_kern_mount fs/namespace.c:1027 [inline] do_new_mount fs/namespace.c:2517 [inline] do_mount+0x564/0x3070 fs/namespace.c:2847 gfs2_mount+0x5e6/0x712 fs/gfs2/ops_fstype.c:1321 mount_fs+0xae/0x328 fs/super.c:1222 vfs_kern_mount.part.34+0xd4/0x4d0 fs/namespace.c:1037 vfs_kern_mount fs/namespace.c:1027 [inline] do_new_mount fs/namespace.c:2517 [inline] do_mount+0x564/0x3070 fs/namespace.c:2847 ksys_mount+0x12d/0x140 fs/namespace.c:3063 SYSC_mount fs/namespace.c:3077 [inline] SyS_mount+0x35/0x50 fs/namespace.c:3074 do_syscall_64+0x29e/0x9d0 arch/x86/entry/common.c:287 ksys_mount+0x12d/0x140 fs/namespace.c:3063 SYSC_mount fs/namespace.c:3077 [inline] SyS_mount+0x35/0x50 fs/namespace.c:3074 do_syscall_64+0x29e/0x9d0 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x44327a RSP: 002b:00007ffea60f1e28 EFLAGS: 00000217 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000044327a RDX: 0000000020000040 RSI: 0000000020000080 RDI: 00007ffea60f1e40 RBP: 0000000000000004 R08: 0000000020001580 R09: 000000000000000a R10: 0000000000200000 R11: 0000000000000217 R12: 0000000000401ce0 R13: 63613d61746f7571 R14: 0030656c69662f2e R15: 6972773d61746164 Code: entry_SYSCALL_64_after_hwframe+0x42/0xb7 00 RIP: 0033:0x44327a 00 RSP: 002b:00007ffea60f1e28 EFLAGS: 00000217 ORIG_RAX: 00000000000000a5 00 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000044327a RDX: 0000000020000040 RSI: 0000000020000080 RDI: 00007ffea60f1e40 00 RBP: 0000000000000004 R08: 0000000020001580 R09: 000000000000000a R10: 0000000000200000 R11: 0000000000000217 R12: 0000000000401ce0 fc R13: 63613d61746f7571 R14: 0030656c69662f2e R15: 6972773d61746164 ff df 48 c1 ea 03 80 3c 02 00 0f 85 88 02 00 00 48 8b 13 48 c7 c6 60 b8 41 88 48 c7 c7 c0 b5 41 88 e8 b0 1e 01 fa <0f> 0b e9 47 fb ff ff 4c 89 e7 e8 f1 c4 6e fa e9 e2 f7 ff ff 4c ---[ end trace 67f5f92c0ce80044 ]--- Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..