Warning: Permanently added '10.128.1.34' (ECDSA) to the list of known hosts.
executing program
[   43.077332] VFS: Found a V7 FS (block size = 512) on device loop0
[   43.089038] ------------[ cut here ]------------
[   43.093902] WARNING: CPU: 1 PID: 7977 at fs/inode.c:342 inc_nlink+0x113/0x130
[   43.101171] Kernel panic - not syncing: panic_on_warn set ...
[   43.101171] 
[   43.108528] CPU: 1 PID: 7977 Comm: syz-executor877 Not tainted 4.14.204-syzkaller #0
[   43.116540] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   43.125888] Call Trace:
[   43.128456]  dump_stack+0x1b2/0x283
[   43.132063]  panic+0x1f9/0x42d
[   43.135235]  ? add_taint.cold+0x16/0x16
[   43.139204]  ? inc_nlink+0x113/0x130
[   43.142901]  ? inc_nlink+0x113/0x130
[   43.146769]  __warn.cold+0x20/0x4b
[   43.150303]  ? ist_end_non_atomic+0x10/0x10
[   43.154599]  ? inc_nlink+0x113/0x130
[   43.158289]  report_bug+0x208/0x249
[   43.161892]  do_error_trap+0x195/0x2d0
[   43.165788]  ? math_error+0x2d0/0x2d0
[   43.169586]  ? _raw_spin_unlock_irqrestore+0x66/0xe0
[   43.174666]  ? debug_check_no_obj_freed+0x2c0/0x674
[   43.179660]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   43.184495]  invalid_op+0x1b/0x40
[   43.187940] RIP: 0010:inc_nlink+0x113/0x130
[   43.192236] RSP: 0018:ffff8880b3737df0 EFLAGS: 00010297
[   43.197576] RAX: ffff8880b482c640 RBX: ffff88808e308958 RCX: 1ffffffff0f545c1
[   43.204840] RDX: 0000000000000000 RSI: ffff8880b1d97840 RDI: ffff88808e308a30
[   43.212102] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[   43.219358] R10: 0000000000000000 R11: 0000000000000000 R12: ffff88808e3089a0
[   43.226700] R13: ffff8880b1d97840 R14: ffffffff87aa2dc0 R15: 0000000000000000
[   43.233977]  sysv_mkdir+0x21/0x120
[   43.237495]  vfs_mkdir+0x463/0x6e0
[   43.241012]  SyS_mkdirat+0x1fd/0x270
[   43.244702]  ? SyS_mknod+0x30/0x30
[   43.248218]  ? __close_fd+0x159/0x230
[   43.251997]  ? do_syscall_64+0x4c/0x640
[   43.255945]  ? SyS_mknod+0x30/0x30
[   43.259532]  do_syscall_64+0x1d5/0x640
[   43.263456]  entry_SYSCALL_64_after_hwframe+0x46/0xbb
[   43.268629] RIP: 0033:0x444439
[   43.271820] RSP: 002b:00007ffe7a4fbc58 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
[   43.279511] RAX: ffffffffffffffda RBX: 00000000004002e0 RCX: 0000000000444439
[   43.286770] RDX: 00000000000000b8 RSI: 0000000020000040 RDI: 0000000000000005
[   43.294033] RBP: 00000000006cf018 R08: 00007ffe00000015 R09: 00000000004002e0
[   43.301281] R10: 00007ffe7a4fbb00 R11: 0000000000000246 R12: 0000000000402020
[   43.309177] R13: 00000000004020b0 R14: 0000000000000000 R15: 0000000000000000
[   43.316629] Kernel Offset: disabled
[   43.320284] Rebooting in 86400 seconds..