Warning: Permanently added '10.128.1.45' (ECDSA) to the list of known hosts.
2019/10/23 02:52:28 fuzzer started
syzkaller login: [   65.671248][ T1079] ------------[ cut here ]------------
[   65.676772][ T1079] WARNING: CPU: 1 PID: 1079 at mm/khugepaged.c:1643 collapse_file+0x1f9d/0x4170
[   65.685793][ T1079] Kernel panic - not syncing: panic_on_warn set ...
[   65.692401][ T1079] CPU: 1 PID: 1079 Comm: khugepaged Not tainted 5.4.0-rc4-next-20191022 #0
[   65.700986][ T1079] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   65.711045][ T1079] Call Trace:
[   65.714349][ T1079]  dump_stack+0x172/0x1f0
[   65.718681][ T1079]  ? collapse_file+0x1ef0/0x4170
[   65.723607][ T1079]  panic+0x2e3/0x75c
[   65.727510][ T1079]  ? add_taint.cold+0x16/0x16
[   65.732243][ T1079]  ? printk+0xba/0xed
[   65.736278][ T1079]  ? kmsg_dump_rewind_nolock+0xe4/0xe4
[   65.741756][ T1079]  ? __warn.cold+0x14/0x35
[   65.746164][ T1079]  ? __warn+0xd9/0x1d0
[   65.750230][ T1079]  ? collapse_file+0x1f9d/0x4170
[   65.755155][ T1079]  __warn.cold+0x2f/0x35
[   65.759382][ T1079]  ? report_bug.cold+0x63/0xb2
[   65.764123][ T1079]  ? collapse_file+0x1f9d/0x4170
[   65.769046][ T1079]  report_bug+0x289/0x300
[   65.773489][ T1079]  do_error_trap+0x11b/0x200
[   65.778072][ T1079]  do_invalid_op+0x37/0x50
[   65.782471][ T1079]  ? collapse_file+0x1f9d/0x4170
[   65.787396][ T1079]  invalid_op+0x23/0x30
[   65.791543][ T1079] RIP: 0010:collapse_file+0x1f9d/0x4170
[   65.797082][ T1079] 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
[   65.816677][ T1079] RSP: 0018:ffff8880a7e2fad0 EFLAGS: 00010293
[   65.822727][ T1079] RAX: ffff8880a7c4e400 RBX: ffff8880a7e2fc88 RCX: ffffffff81b2b688
[   65.830689][ T1079] RDX: 0000000000000000 RSI: ffffffff81b2b9ad RDI: 0000000000000001
[   65.838653][ T1079] RBP: ffff8880a7e2fcb0 R08: ffff8880a7c4e400 R09: fffff940004928b9
[   65.846618][ T1079] R10: fffff940004928b8 R11: ffffea00024945c7 R12: 0000000000000001
[   65.854586][ T1079] R13: ffffea0002382808 R14: 0000000000000000 R15: ffffea0002338000
[   65.862562][ T1079]  ? collapse_file+0x1c78/0x4170
[   65.867527][ T1079]  ? collapse_file+0x1f9d/0x4170
[   65.872468][ T1079]  ? rcu_lockdep_current_cpu_online+0xe3/0x130
[   65.878612][ T1079]  ? khugepaged+0x21d0/0x4360
[   65.883279][ T1079]  ? trace_event_raw_event_mm_collapse_huge_page_isolate+0x370/0x370
[   65.891359][ T1079]  ? __sanitizer_cov_trace_cmp4+0x16/0x20
[   65.897071][ T1079]  ? khugepaged_find_target_node+0x142/0x180
[   65.903177][ T1079]  khugepaged+0x2da9/0x4360
[   65.907689][ T1079]  ? __kasan_check_read+0x11/0x20
[   65.912703][ T1079]  ? __lock_acquire+0x16f2/0x4a00
[   65.917719][ T1079]  ? _raw_spin_unlock_irq+0x23/0x80
[   65.922907][ T1079]  ? finish_task_switch+0x147/0x750
[   65.928086][ T1079]  ? _raw_spin_unlock_irq+0x23/0x80
[   65.933273][ T1079]  ? lockdep_hardirqs_on+0x421/0x5e0
[   65.938552][ T1079]  ? collapse_pte_mapped_thp+0xbe0/0xbe0
[   65.944171][ T1079]  ? lock_downgrade+0x920/0x920
[   65.949006][ T1079]  ? finish_wait+0x260/0x260
[   65.953591][ T1079]  ? lockdep_hardirqs_on+0x421/0x5e0
[   65.958891][ T1079]  ? trace_hardirqs_on+0x67/0x240
[   65.963909][ T1079]  ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20
[   65.970130][ T1079]  ? __kthread_parkme+0x108/0x1c0
[   65.975130][ T1079]  ? __kasan_check_read+0x11/0x20
[   65.980146][ T1079]  kthread+0x361/0x430
[   65.984213][ T1079]  ? collapse_pte_mapped_thp+0xbe0/0xbe0
[   65.989833][ T1079]  ? kthread_mod_delayed_work+0x1f0/0x1f0
[   65.995543][ T1079]  ret_from_fork+0x24/0x30
[   66.001479][ T1079] Kernel Offset: disabled
[   66.005881][ T1079] Rebooting in 86400 seconds..