__dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x194/0x24d lib/dump_stack.c:53 kobject_add_internal failed for ! with -EEXIST, don't try to register things with the same name in the same directory. sysfs_warn_dup+0x83/0xa0 fs/sysfs/dir.c:30 sysfs_create_dir_ns+0x178/0x1d0 fs/sysfs/dir.c:58 create_dir lib/kobject.c:69 [inline] kobject_add_internal+0x335/0xbc0 lib/kobject.c:227 WARNING: CPU: 1 PID: 4432 at lib/kobject.c:238 kobject_add_internal+0x8d4/0xbc0 lib/kobject.c:235 Kernel panic - not syncing: panic_on_warn set ... kobject_add_varg lib/kobject.c:364 [inline] kobject_init_and_add+0xf9/0x150 lib/kobject.c:436 gfs2_sys_fs_add+0x1ff/0x580 fs/gfs2/sys.c:652 fill_super+0x86f/0x1d70 fs/gfs2/ops_fstype.c:1118 gfs2_mount+0x587/0x6e0 fs/gfs2/ops_fstype.c:1321 mount_fs+0x66/0x2d0 fs/super.c:1222 vfs_kern_mount.part.26+0xc6/0x4a0 fs/namespace.c:1037 vfs_kern_mount fs/namespace.c:2509 [inline] do_new_mount fs/namespace.c:2512 [inline] do_mount+0xea4/0x2bb0 fs/namespace.c:2842 SYSC_mount fs/namespace.c:3058 [inline] SyS_mount+0xab/0x120 fs/namespace.c:3035 do_syscall_64+0x281/0x940 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x4430ba RSP: 002b:00007ffccbb80ca8 EFLAGS: 00000297 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004430ba RDX: 00000000200001c0 RSI: 0000000020000200 RDI: 00007ffccbb80cc0 RBP: 00000000006cb018 R08: 0000000020000500 R09: 000000000000000a R10: 0000000000000000 R11: 0000000000000297 R12: 6e5f6b636f6c3d6f R13: 746f72706b636f6c R14: 0031656c69662f2e R15: 0000000000000004 CPU: 1 PID: 4432 Comm: syzkaller661252 Not tainted 4.16.0+ #10 ------------[ cut here ]------------ 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+0x194/0x24d lib/dump_stack.c:53 kobject_add_internal failed for ! with -EEXIST, don't try to register things with the same name in the same directory. panic+0x1e4/0x41c kernel/panic.c:183 WARNING: CPU: 0 PID: 4433 at lib/kobject.c:238 kobject_add_internal+0x8d4/0xbc0 lib/kobject.c:235 Modules linked in: CPU: 0 PID: 4433 Comm: syzkaller661252 Not tainted 4.16.0+ #10 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:kobject_add_internal+0x8d4/0xbc0 lib/kobject.c:235 __warn+0x1dc/0x200 kernel/panic.c:547 RSP: 0018:ffff8801ad6574a0 EFLAGS: 00010282 RAX: dffffc0000000008 RBX: ffff8801d9ba5190 RCX: ffffffff815b193e report_bug+0x1f4/0x2b0 lib/bug.c:186 RDX: 0000000000000000 RSI: 1ffff10035acae44 RDI: 1ffff10035acae19 RBP: ffff8801ad657598 R08: 1ffff10035acaddb R09: 0000000000000001 fixup_bug.part.10+0x37/0x80 arch/x86/kernel/traps.c:178 R10: ffff8801ad657260 R11: 0000000000000000 R12: 1ffff10035acae9a R13: 00000000ffffffef R14: ffff8801d39b9848 R15: 1ffff10035acae9e fixup_bug arch/x86/kernel/traps.c:247 [inline] do_error_trap+0x2d7/0x3e0 arch/x86/kernel/traps.c:296 FS: 00000000025b9880(0000) GS:ffff8801db000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe1884cdaf0 CR3: 00000001ad5c2004 CR4: 00000000001606f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:315 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:986 RIP: 0010:kobject_add_internal+0x8d4/0xbc0 lib/kobject.c:235 RSP: 0018:ffff8801ad5174a0 EFLAGS: 00010282 RAX: dffffc0000000008 RBX: ffff8801ad9d1150 RCX: ffffffff815b193e kobject_add_varg lib/kobject.c:364 [inline] kobject_init_and_add+0xf9/0x150 lib/kobject.c:436 RDX: 0000000000000000 RSI: 1ffff10035aa2e44 RDI: 1ffff10035aa2e19 RBP: ffff8801ad517598 R08: 1ffff10035aa2ddb R09: 0000000000000000 R10: ffff8801ad517260 R11: 0000000000000000 R12: 1ffff10035aa2e9a R13: 00000000ffffffef R14: ffff8801d39b9848 R15: 1ffff10035aa2e9e gfs2_sys_fs_add+0x1ff/0x580 fs/gfs2/sys.c:652 kobject_add_varg lib/kobject.c:364 [inline] kobject_init_and_add+0xf9/0x150 lib/kobject.c:436 fill_super+0x86f/0x1d70 fs/gfs2/ops_fstype.c:1118 gfs2_sys_fs_add+0x1ff/0x580 fs/gfs2/sys.c:652 fill_super+0x86f/0x1d70 fs/gfs2/ops_fstype.c:1118 gfs2_mount+0x587/0x6e0 fs/gfs2/ops_fstype.c:1321 mount_fs+0x66/0x2d0 fs/super.c:1222 vfs_kern_mount.part.26+0xc6/0x4a0 fs/namespace.c:1037 gfs2_mount+0x587/0x6e0 fs/gfs2/ops_fstype.c:1321 vfs_kern_mount fs/namespace.c:2509 [inline] do_new_mount fs/namespace.c:2512 [inline] do_mount+0xea4/0x2bb0 fs/namespace.c:2842 mount_fs+0x66/0x2d0 fs/super.c:1222 vfs_kern_mount.part.26+0xc6/0x4a0 fs/namespace.c:1037 vfs_kern_mount fs/namespace.c:2509 [inline] do_new_mount fs/namespace.c:2512 [inline] do_mount+0xea4/0x2bb0 fs/namespace.c:2842 SYSC_mount fs/namespace.c:3058 [inline] SyS_mount+0xab/0x120 fs/namespace.c:3035 do_syscall_64+0x281/0x940 arch/x86/entry/common.c:287 SYSC_mount fs/namespace.c:3058 [inline] SyS_mount+0xab/0x120 fs/namespace.c:3035 do_syscall_64+0x281/0x940 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x4430ba RSP: 002b:00007ffccbb80ca8 EFLAGS: 00000297 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004430ba RDX: 00000000200001c0 RSI: 0000000020000200 RDI: 00007ffccbb80cc0 RBP: 00000000006cb018 R08: 0000000020000500 R09: 000000000000000a R10: 0000000000000000 R11: 0000000000000297 R12: 6e5f6b636f6c3d6f R13: 746f72706b636f6c R14: 0031656c69662f2e R15: 0000000000000004 Code: 00 00 entry_SYSCALL_64_after_hwframe+0x42/0xb7 00 RIP: 0033:0x4430ba 00 RSP: 002b:00007ffccbb80ca8 EFLAGS: 00000297 ORIG_RAX: 00000000000000a5 fc RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004430ba RDX: 00000000200001c0 RSI: 0000000020000200 RDI: 00007ffccbb80cc0 ff RBP: 00000000006cb018 R08: 0000000020000500 R09: 000000000000000a R10: 0000000000000000 R11: 0000000000000297 R12: 6e5f6b636f6c3d6f df R13: 746f72706b636f6c R14: 0031656c69662f2e R15: 0000000000000004 48 c1 ea 03 80 3c 02 00 0f 85 aa 00 00 00 48 8b 13 48 c7 c6 00 24 d6 87 48 c7 c7 60 21 d6 87 e8 4c b3 62 fa <0f> 0b e9 1d fb ff ff e8 30 9e 92 fa 0f 0b e9 29 fe ff ff e8 24 ---[ end trace f7cbae6a36c3e74e ]--- Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..