syzbot

 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x142/0x197 lib/dump_stack.c:58
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10f/0x159 lib/fault-inject.c:149
 should_failslab+0xdb/0x130 mm/failslab.c:32
 slab_pre_alloc_hook mm/slab.h:421 [inline]
 slab_alloc mm/slab.c:3376 [inline]
 kmem_cache_alloc+0x2d7/0x780 mm/slab.c:3550
------------[ cut here ]------------
WARNING: CPU: 0 PID: 26071 at fs/super.c:1163 kill_block_super+0xc9/0xf0 fs/super.c:1163
 kmem_cache_zalloc include/linux/slab.h:651 [inline]
 __kernfs_new_node+0x70/0x420 fs/kernfs/dir.c:633
Kernel panic - not syncing: panic_on_warn set ...

 kernfs_new_node+0x80/0xf0 fs/kernfs/dir.c:678
 kernfs_create_dir_ns+0x41/0x140 fs/kernfs/dir.c:999
 sysfs_create_dir_ns+0xbe/0x1d0 fs/sysfs/dir.c:55
 create_dir lib/kobject.c:71 [inline]
 kobject_add_internal.part.0.cold+0x114/0x5ae lib/kobject.c:229
 kobject_add_internal lib/kobject.c:205 [inline]
 kobject_add_varg lib/kobject.c:364 [inline]
 kobject_add+0x11f/0x180 lib/kobject.c:409
 device_add+0x383/0x1490 drivers/base/core.c:1861
 netdev_register_kobject+0x183/0x3a0 net/core/net-sysfs.c:1599
 register_netdevice+0x814/0xca0 net/core/dev.c:7668
 register_vlan_dev+0x292/0x6a0 net/8021q/vlan.c:168
 register_vlan_device net/8021q/vlan.c:268 [inline]
 vlan_ioctl_handler+0x98d/0xcdf net/8021q/vlan.c:585
 sock_ioctl+0x2f4/0x470 net/socket.c:1049
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:500 [inline]
 do_vfs_ioctl+0x7ae/0x1060 fs/ioctl.c:684
 SYSC_ioctl fs/ioctl.c:701 [inline]
 SyS_ioctl+0x8f/0xc0 fs/ioctl.c:692
 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45a679
RSP: 002b:00007f2054356c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f2054356c90 RCX: 000000000045a679
RDX: 0000000020000080 RSI: 0000000000008983 RDI: 0000000000000003
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f20543576d4
R13: 00000000004d0d88 R14: 00000000004dd5f8 R15: 0000000000000004
CPU: 0 PID: 26071 Comm: syz-executor.1 Not tainted 4.14.157-syzkaller #0
kobject: 'loop3' (ffff8880a414cc20): kobject_uevent_env
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+0x142/0x197 lib/dump_stack.c:58
 panic+0x1f9/0x42d kernel/panic.c:183
kobject: 'loop3' (ffff8880a414cc20): fill_kobj_path: path = '/devices/virtual/block/loop3'
 __warn.cold+0x2f/0x2f kernel/panic.c:547
kobject_add_internal failed for team_slave_1.0 (error: -12 parent: net)
 report_bug+0x216/0x254 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:177 [inline]
 fixup_bug arch/x86/kernel/traps.c:172 [inline]
 do_error_trap+0x1bb/0x310 arch/x86/kernel/traps.c:295
kobject: 'loop5' (ffff8880a42375a0): kobject_uevent_env
kobject: 'loop0' (ffff888083e55760): kobject_uevent_env
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:314
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:963
RIP: 0010:kill_block_super+0xc9/0xf0 fs/super.c:1163
kobject: 'loop0' (ffff888083e55760): fill_kobj_path: path = '/devices/virtual/block/loop0'
RSP: 0018:ffff88805358fb70 EFLAGS: 00010246
RAX: 0000000000040000 RBX: 0000000000000000 RCX: ffffc90013182000
RDX: 0000000000040000 RSI: ffffffff818fec49 RDI: ffff8880a6d77a60
RBP: ffff88805358fb88 R08: ffff88809ba244c0 R09: 0000000000000001
R10: 0000000000000000 R11: ffff88809ba244c0 R12: ffff888054aa8c40
R13: ffff8880a6d776c0 R14: ffff888054aa8c40 R15: dffffc0000000000
kobject: 'loop5' (ffff8880a42375a0): fill_kobj_path: path = '/devices/virtual/block/loop5'
 reiserfs_kill_sb+0x17c/0x1e0 fs/reiserfs/super.c:570
 deactivate_locked_super+0x74/0xe0 fs/super.c:319
REISERFS warning (device loop5): super-6502 reiserfs_getopt: unknown mount option "usæZquota="
 sget_userns+0x9d9/0xc30 fs/super.c:537
kobject: 'loop2' (ffff8880a4104320): kobject_uevent_env
 sget+0xd6/0x120 fs/super.c:572
kobject: 'loop2' (ffff8880a4104320): fill_kobj_path: path = '/devices/virtual/block/loop2'
 mount_bdev+0xd5/0x370 fs/super.c:1107
 get_super_block+0x35/0x40 fs/reiserfs/super.c:2605
kobject: 'team_slave_1.0' (ffff888045a472b0): kobject_add_internal: parent: 'net', set: 'devices'
 mount_fs+0x97/0x2a1 fs/super.c:1237
 vfs_kern_mount.part.0+0x5e/0x3d0 fs/namespace.c:1046
 vfs_kern_mount fs/namespace.c:1036 [inline]
 do_new_mount fs/namespace.c:2549 [inline]
 do_mount+0x417/0x27d0 fs/namespace.c:2879
kobject: 'loop2' (ffff8880a4104320): kobject_uevent_env
 SYSC_mount fs/namespace.c:3095 [inline]
 SyS_mount+0xab/0x120 fs/namespace.c:3072
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45d0ca
RSP: 002b:00007f41b87f3a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f41b87f3b40 RCX: 000000000045d0ca
RDX: 00007f41b87f3ae0 RSI: 0000000020000180 RDI: 00007f41b87f3b00
kobject: 'loop2' (ffff8880a4104320): fill_kobj_path: path = '/devices/virtual/block/loop2'
RBP: 0000000000000000 R08: 00007f41b87f3b40 R09: 00007f41b87f3ae0
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000004
R13: 00000000004cab02 R14: 00000000004e3f40 R15: 0000000000000003
Kernel Offset: disabled
Rebooting in 86400 seconds..