__dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x194/0x24d lib/dump_stack.c:53 kobject_add_internal failed for _dev_net_tun 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: 4475 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: 0033:0x44313a RSP: 002b:00007fff66c99ba8 EFLAGS: 00000217 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000044313a RDX: 0000000020001880 RSI: 00000000200018c0 RDI: 00007fff66c99bc0 RBP: 00000000006cb018 R08: 0000000020001ec0 R09: 000000000000000a R10: 0000000000000006 R11: 0000000000000217 R12: 6c6261746b636f6c R13: 746f72706b636f6c R14: 0030656c69662f2e R15: 0000000000000004 CPU: 1 PID: 4475 Comm: syzkaller762031 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 _dev_net_tun 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: 4476 at lib/kobject.c:238 kobject_add_internal+0x8d4/0xbc0 lib/kobject.c:235 Modules linked in: CPU: 0 PID: 4476 Comm: syzkaller762031 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:ffff8801da4474a0 EFLAGS: 00010282 RAX: dffffc0000000008 RBX: ffff8801aca89110 RCX: ffffffff815b193e report_bug+0x1f4/0x2b0 lib/bug.c:186 RDX: 0000000000000000 RSI: 1ffff1003b488e44 RDI: 1ffff1003b488e19 fixup_bug.part.10+0x37/0x80 arch/x86/kernel/traps.c:178 RBP: ffff8801da447598 R08: 1ffff1003b488ddb R09: 0000000000000001 fixup_bug arch/x86/kernel/traps.c:247 [inline] do_error_trap+0x2d7/0x3e0 arch/x86/kernel/traps.c:296 R10: ffff8801da447260 R11: 0000000000000000 R12: 1ffff1003b488e9a R13: 00000000ffffffef R14: ffff8801d417a448 R15: 1ffff1003b488e9e FS: 0000000001305880(0000) GS:ffff8801db000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000001915c60 CR3: 00000001acf8c001 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:ffff8801da4874a0 EFLAGS: 00010282 RAX: dffffc0000000008 RBX: ffff8801d97650d0 RCX: ffffffff815b193e kobject_add_varg lib/kobject.c:364 [inline] kobject_init_and_add+0xf9/0x150 lib/kobject.c:436 RDX: 0000000000000000 RSI: 1ffff1003b490e44 RDI: 1ffff1003b490e19 RBP: ffff8801da487598 R08: 1ffff1003b490ddb R09: 0000000000000000 R10: ffff8801da487260 R11: 0000000000000000 R12: 1ffff1003b490e9a R13: 00000000ffffffef R14: ffff8801d417a448 R15: 1ffff1003b490e9e 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 vfs_kern_mount fs/namespace.c:2509 [inline] do_new_mount fs/namespace.c:2512 [inline] do_mount+0xea4/0x2bb0 fs/namespace.c:2842 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 SYSC_mount fs/namespace.c:3058 [inline] SyS_mount+0xab/0x120 fs/namespace.c:3035 vfs_kern_mount fs/namespace.c:2509 [inline] do_new_mount fs/namespace.c:2512 [inline] do_mount+0xea4/0x2bb0 fs/namespace.c:2842 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 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x44313a do_syscall_64+0x281/0x940 arch/x86/entry/common.c:287 RSP: 002b:00007fff66c99ba8 EFLAGS: 00000217 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000044313a RDX: 0000000020001880 RSI: 00000000200018c0 RDI: 00007fff66c99bc0 RBP: 00000000006cb018 R08: 0000000020001ec0 R09: 000000000000000a R10: 0000000000000006 R11: 0000000000000217 R12: 6c6261746b636f6c R13: 746f72706b636f6c R14: 0030656c69662f2e R15: 0000000000000004 Code: 00 00 00 entry_SYSCALL_64_after_hwframe+0x42/0xb7 00 RIP: 0033:0x44313a fc RSP: 002b:00007fff66c99ba8 EFLAGS: 00000217 ORIG_RAX: 00000000000000a5 ff RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000044313a RDX: 0000000020001880 RSI: 00000000200018c0 RDI: 00007fff66c99bc0 df RBP: 00000000006cb018 R08: 0000000020001ec0 R09: 000000000000000a R10: 0000000000000006 R11: 0000000000000217 R12: 6c6261746b636f6c 48 R13: 746f72706b636f6c R14: 0030656c69662f2e R15: 0000000000000004 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 14a172560d261382 ]--- Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..