Warning: Permanently added '10.128.0.148' (ECDSA) to the list of known hosts.
2019/10/23 03:39:39 fuzzer started
syzkaller login: [   73.652078][ T1080] ------------[ cut here ]------------
[   73.657600][ T1080] WARNING: CPU: 0 PID: 1080 at mm/khugepaged.c:1643 collapse_file+0x1f9d/0x4170
[   73.666645][ T1080] Kernel panic - not syncing: panic_on_warn set ...
[   73.673238][ T1080] CPU: 0 PID: 1080 Comm: khugepaged Not tainted 5.4.0-rc4-next-20191022 #0
[   73.681827][ T1080] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   73.691882][ T1080] Call Trace:
[   73.695183][ T1080]  dump_stack+0x172/0x1f0
[   73.699508][ T1080]  ? collapse_file+0x1ef0/0x4170
[   73.704442][ T1080]  panic+0x2e3/0x75c
[   73.708321][ T1080]  ? add_taint.cold+0x16/0x16
[   73.712989][ T1080]  ? printk+0xba/0xed
[   73.716961][ T1080]  ? kmsg_dump_rewind_nolock+0xe4/0xe4
[   73.722413][ T1080]  ? __warn.cold+0x14/0x35
[   73.726822][ T1080]  ? __warn+0xd9/0x1d0
[   73.730884][ T1080]  ? collapse_file+0x1f9d/0x4170
[   73.735797][ T1080]  __warn.cold+0x2f/0x35
[   73.740030][ T1080]  ? report_bug.cold+0x63/0xb2
[   73.744965][ T1080]  ? collapse_file+0x1f9d/0x4170
[   73.749898][ T1080]  report_bug+0x289/0x300
[   73.754236][ T1080]  do_error_trap+0x11b/0x200
[   73.758820][ T1080]  do_invalid_op+0x37/0x50
[   73.763229][ T1080]  ? collapse_file+0x1f9d/0x4170
[   73.768174][ T1080]  invalid_op+0x23/0x30
[   73.772371][ T1080] RIP: 0010:collapse_file+0x1f9d/0x4170
[   73.777922][ T1080] Code: a1 c0 ff 31 c9 ba 01 00 00 00 4c 89 fe 48 8b bd c0 fe ff ff e8 e4 e9 ec ff e9 b4 fd ff ff 4c 8b bd 88 fe ff ff e8 93 a1 c0 ff <0f> 0b 4c 8b a3 50 ff ff ff c7 85 80 fe ff ff 00 00 00 00 e9 05 f6
[   73.797527][ T1080] RSP: 0018:ffff8880a7ed7ad0 EFLAGS: 00010293
[   73.803595][ T1080] RAX: ffff8880a7e8e440 RBX: ffff8880a7ed7c88 RCX: ffffffff81b2b688
[   73.811553][ T1080] RDX: 0000000000000000 RSI: ffffffff81b2b9ad RDI: 0000000000000001
[   73.819513][ T1080] RBP: ffff8880a7ed7cb0 R08: ffff8880a7e8e440 R09: fffff94000492951
[   73.827472][ T1080] R10: fffff94000492950 R11: ffffea0002494a87 R12: 0000000000000001
[   73.835557][ T1080] R13: ffffea00002ed108 R14: 0000000000000000 R15: ffffea00023f8000
[   73.843542][ T1080]  ? collapse_file+0x1c78/0x4170
[   73.848466][ T1080]  ? collapse_file+0x1f9d/0x4170
[   73.853409][ T1080]  ? rcu_lockdep_current_cpu_online+0xe3/0x130
[   73.859567][ T1080]  ? khugepaged+0x21d0/0x4360
[   73.864233][ T1080]  ? trace_event_raw_event_mm_collapse_huge_page_isolate+0x370/0x370
[   73.872292][ T1080]  ? __sanitizer_cov_trace_cmp4+0x16/0x20
[   73.878001][ T1080]  ? khugepaged_find_target_node+0x142/0x180
[   73.884059][ T1080]  khugepaged+0x2da9/0x4360
[   73.888555][ T1080]  ? __kasan_check_read+0x11/0x20
[   73.893579][ T1080]  ? __lock_acquire+0x16f2/0x4a00
[   73.898628][ T1080]  ? _raw_spin_unlock_irq+0x23/0x80
[   73.903819][ T1080]  ? finish_task_switch+0x147/0x750
[   73.909009][ T1080]  ? _raw_spin_unlock_irq+0x23/0x80
[   73.914216][ T1080]  ? lockdep_hardirqs_on+0x421/0x5e0
[   73.919498][ T1080]  ? collapse_pte_mapped_thp+0xbe0/0xbe0
[   73.925115][ T1080]  ? lock_downgrade+0x920/0x920
[   73.929958][ T1080]  ? finish_wait+0x260/0x260
[   73.934655][ T1080]  ? lockdep_hardirqs_on+0x421/0x5e0
[   73.939941][ T1080]  ? trace_hardirqs_on+0x67/0x240
[   73.945042][ T1080]  ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20
[   73.951276][ T1080]  ? __kthread_parkme+0x108/0x1c0
[   73.956287][ T1080]  ? __kasan_check_read+0x11/0x20
[   73.961323][ T1080]  kthread+0x361/0x430
[   73.965405][ T1080]  ? collapse_pte_mapped_thp+0xbe0/0xbe0
[   73.971033][ T1080]  ? kthread_mod_delayed_work+0x1f0/0x1f0
[   73.976752][ T1080]  ret_from_fork+0x24/0x30
[   73.982770][ T1080] Kernel Offset: disabled
[   73.987154][ T1080] Rebooting in 86400 seconds..