[ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.155' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 40.545636][ T7015] ------------[ cut here ]------------ [ 40.551352][ T7015] memtype_reserve failed: [mem 0xffffffffff000-0x003fefff], req write-back [ 40.561096][ T7015] WARNING: CPU: 1 PID: 7015 at arch/x86/mm/pat/memtype.c:590 memtype_reserve+0x171/0xbd0 [ 40.570995][ T7015] Kernel panic - not syncing: panic_on_warn set ... [ 40.577571][ T7015] CPU: 1 PID: 7015 Comm: syz-executor854 Not tainted 5.7.0-rc4-syzkaller #0 [ 40.586210][ T7015] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 40.596411][ T7015] Call Trace: [ 40.599673][ T7015] dump_stack+0x1e9/0x30e [ 40.603972][ T7015] panic+0x264/0x7a0 [ 40.607833][ T7015] ? __warn+0x102/0x210 [ 40.611962][ T7015] ? memtype_reserve+0x171/0xbd0 [ 40.616866][ T7015] __warn+0x209/0x210 [ 40.620832][ T7015] ? memtype_reserve+0x171/0xbd0 [ 40.625737][ T7015] report_bug+0x1ac/0x2d0 [ 40.630049][ T7015] do_error_trap+0xca/0x1c0 [ 40.634519][ T7015] do_invalid_op+0x32/0x40 [ 40.638901][ T7015] ? memtype_reserve+0x171/0xbd0 [ 40.643807][ T7015] invalid_op+0x23/0x30 [ 40.647943][ T7015] RIP: 0010:memtype_reserve+0x171/0xbd0 [ 40.653456][ T7015] Code: ed eb 2e e8 01 f3 3e 00 49 c7 c0 09 78 e6 88 48 c7 c7 6c 75 e6 88 48 c7 c6 96 75 e6 88 48 89 da 4c 89 f1 31 c0 e8 9f 08 11 00 <0f> 0b bd ea ff ff ff 65 48 8b 04 25 28 00 00 00 48 3b 44 24 30 0f [ 40.673028][ T7015] RSP: 0018:ffffc90001577970 EFLAGS: 00010246 [ 40.679779][ T7015] RAX: ec70f15e04a40d00 RBX: 000ffffffffff000 RCX: ffff888095a2e200 [ 40.687816][ T7015] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 [ 40.697233][ T7015] RBP: ffffffff8862b9b8 R08: ffffffff815ccd99 R09: ffffed1015d26660 [ 40.705280][ T7015] R10: ffffed1015d26660 R11: 0000000000000000 R12: 00000000003ff000 [ 40.713253][ T7015] R13: 1ffff920002aef46 R14: 00000000003fefff R15: ffffc90001577a24 [ 40.721213][ T7015] ? vprintk_emit+0x339/0x3c0 [ 40.725872][ T7015] reserve_pfn_range+0x278/0xd30 [ 40.730786][ T7015] track_pfn_remap+0xdb/0x870 [ 40.735452][ T7015] remap_pfn_range+0x1c9/0xcc0 [ 40.740283][ T7015] ? hcd_buffer_alloc+0xfe/0x240 [ 40.745196][ T7015] ? rcu_read_lock_sched_held+0x106/0x170 [ 40.751160][ T7015] ? trace_kmalloc+0xcb/0x120 [ 40.755921][ T7015] ? hcd_buffer_alloc+0xfe/0x240 [ 40.760864][ T7015] ? __kmalloc+0x263/0x330 [ 40.765263][ T7015] ? hcd_buffer_alloc+0xfe/0x240 [ 40.770170][ T7015] ? dma_pgprot+0x9/0x10 [ 40.774397][ T7015] ? dma_direct_mmap+0x164/0x1e0 [ 40.779321][ T7015] usbdev_mmap+0x394/0x5e0 [ 40.783737][ T7015] mmap_region+0x139a/0x1b80 [ 40.788304][ T7015] do_mmap+0xad3/0x1150 [ 40.792447][ T7015] vm_mmap_pgoff+0x147/0x1e0 [ 40.797024][ T7015] ksys_mmap_pgoff+0x484/0x570 [ 40.801772][ T7015] ? do_syscall_64+0x19/0x1b0 [ 40.806852][ T7015] do_syscall_64+0xf3/0x1b0 [ 40.811328][ T7015] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 40.817204][ T7015] RIP: 0033:0x443e79 [ 40.821080][ T7015] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b d8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 40.840677][ T7015] RSP: 002b:00007ffe592ec518 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 [ 40.849071][ T7015] RAX: ffffffffffffffda RBX: 00000000004002e0 RCX: 0000000000443e79 [ 40.857010][ T7015] RDX: 0000000000000000 RSI: 0000000000400000 RDI: 0000000020000000 [ 40.865039][ T7015] RBP: 00000000006ce018 R08: 0000000000000003 R09: 0000000000000000 [ 40.872995][ T7015] R10: 0000000000000011 R11: 0000000000000246 R12: 0000000000401b80 [ 40.881048][ T7015] R13: 0000000000401c10 R14: 0000000000000000 R15: 0000000000000000 [ 40.890548][ T7015] Kernel Offset: disabled [ 40.894908][ T7015] Rebooting in 86400 seconds..