[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.51' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 65.756057][ T7045] ------------[ cut here ]------------ [ 65.762075][ T7045] memtype_reserve failed: [mem 0xffffffffff000-0x00008fff], req write-back [ 65.772017][ T7045] WARNING: CPU: 1 PID: 7045 at arch/x86/mm/pat/memtype.c:589 memtype_reserve+0x69f/0x820 [ 65.782038][ T7045] Kernel panic - not syncing: panic_on_warn set ... [ 65.788602][ T7045] CPU: 1 PID: 7045 Comm: syz-executor576 Not tainted 5.7.0-rc4-syzkaller #0 [ 65.797250][ T7045] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 65.807297][ T7045] Call Trace: [ 65.810591][ T7045] dump_stack+0x188/0x20d [ 65.814919][ T7045] ? memtype_reserve+0x680/0x820 [ 65.819847][ T7045] panic+0x2e3/0x75c [ 65.823726][ T7045] ? add_taint.cold+0x16/0x16 [ 65.828382][ T7045] ? __probe_kernel_read+0x188/0x1d0 [ 65.833663][ T7045] ? __warn.cold+0x14/0x35 [ 65.838053][ T7045] ? __warn+0xd5/0x1c8 [ 65.842098][ T7045] ? memtype_reserve+0x69f/0x820 [ 65.847008][ T7045] __warn.cold+0x2f/0x35 [ 65.851222][ T7045] ? irq_work_queue+0xc3/0x100 [ 65.855959][ T7045] ? memtype_reserve+0x69f/0x820 [ 65.860872][ T7045] report_bug+0x27b/0x2f0 [ 65.865184][ T7045] do_error_trap+0x12b/0x220 [ 65.869750][ T7045] ? memtype_reserve+0x69f/0x820 [ 65.874684][ T7045] do_invalid_op+0x32/0x40 [ 65.879097][ T7045] ? memtype_reserve+0x69f/0x820 [ 65.884155][ T7045] invalid_op+0x23/0x30 [ 65.888291][ T7045] RIP: 0010:memtype_reserve+0x69f/0x820 [ 65.893827][ T7045] Code: 48 8b 2c ed c0 00 29 88 e8 ae ad 3e 00 48 8d 4b ff 49 89 e8 4c 89 e2 48 c7 c6 20 01 29 88 48 c7 c7 80 f9 28 88 e8 79 e8 0f 00 <0f> 0b 41 bf ea ff ff ff e9 03 fc ff ff 41 bf ea ff ff ff e9 f8 fb [ 65.913412][ T7045] RSP: 0018:ffffc900016077a0 EFLAGS: 00010282 [ 65.919469][ T7045] RAX: 0000000000000000 RBX: 0000000000009000 RCX: 0000000000000000 [ 65.927416][ T7045] RDX: 0000000000000000 RSI: ffffffff815ce181 RDI: fffff520002c0ee6 [ 65.935362][ T7045] RBP: ffffffff8828ff40 R08: ffff8880a92aa0c0 R09: ffffed1015ce66a9 [ 65.943325][ T7045] R10: ffff8880ae733547 R11: ffffed1015ce66a8 R12: 000ffffffffff000 [ 65.951274][ T7045] R13: 1ffff920002c0efa R14: dffffc0000000000 R15: 0000000000000000 [ 65.959346][ T7045] ? vprintk_func+0x81/0x17e [ 65.963916][ T7045] ? _raw_spin_unlock_irqrestore+0x9b/0xe0 [ 65.969707][ T7045] ? stack_depot_save+0x252/0x440 [ 65.975055][ T7045] ? pat_init+0x440/0x440 [ 65.979383][ T7045] ? __init_cache_modes+0x270/0x270 [ 65.984555][ T7045] ? save_stack+0x32/0x40 [ 65.988870][ T7045] ? save_stack+0x1b/0x40 [ 65.993187][ T7045] reserve_pfn_range+0x173/0x470 [ 65.998119][ T7045] ? entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 66.004169][ T7045] ? arch_io_reserve_memtype_wc+0xa0/0xa0 [ 66.009870][ T7045] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 66.015827][ T7045] ? ksys_mmap_pgoff+0x457/0x5b0 [ 66.020763][ T7045] track_pfn_remap+0x18b/0x280 [ 66.025520][ T7045] remap_pfn_range+0x202/0xbf0 [ 66.030261][ T7045] ? __kmalloc+0x75f/0x7a0 [ 66.034659][ T7045] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 66.040180][ T7045] ? __kasan_kmalloc.constprop.0+0xbf/0xd0 [ 66.045960][ T7045] ? copy_page_range+0x1f00/0x1f00 [ 66.051079][ T7045] ? __kmalloc+0x62f/0x7a0 [ 66.055470][ T7045] ? hcd_buffer_alloc+0x1ed/0x290 [ 66.060475][ T7045] dma_direct_mmap+0x197/0x260 [ 66.065216][ T7045] dma_mmap_attrs+0xfe/0x150 [ 66.069783][ T7045] usbdev_mmap+0x3ae/0x730 [ 66.074177][ T7045] ? usbdev_vm_close+0x40/0x40 [ 66.078925][ T7045] mmap_region+0xafb/0x1540 [ 66.083408][ T7045] ? __x64_sys_brk+0x6e0/0x6e0 [ 66.088147][ T7045] ? security_mmap_addr+0x81/0xa0 [ 66.093147][ T7045] ? get_unmapped_area+0x2a0/0x3c0 [ 66.098260][ T7045] do_mmap+0x849/0x1160 [ 66.102399][ T7045] vm_mmap_pgoff+0x197/0x200 [ 66.106987][ T7045] ? randomize_stack_top+0x100/0x100 [ 66.112248][ T7045] ? ksys_dup3+0x3c0/0x3c0 [ 66.116641][ T7045] ? up_read+0x1ab/0x750 [ 66.120865][ T7045] ksys_mmap_pgoff+0x457/0x5b0 [ 66.125605][ T7045] ? find_mergeable_anon_vma+0x2c0/0x2c0 [ 66.131214][ T7045] ? trace_hardirqs_off_caller+0x55/0x230 [ 66.136913][ T7045] do_syscall_64+0xf6/0x7d0 [ 66.141394][ T7045] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 66.147270][ T7045] RIP: 0033:0x443e79 [ 66.151156][ T7045] 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 [ 66.170733][ T7045] RSP: 002b:00007fff9ce1ca08 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 [ 66.179125][ T7045] RAX: ffffffffffffffda RBX: 00000000004002e0 RCX: 0000000000443e79 [ 66.187071][ T7045] RDX: 0000000000000000 RSI: 000000000000a000 RDI: 0000000020001000 [ 66.195032][ T7045] RBP: 00000000006ce018 R08: 0000000000000003 R09: 0000000000000000 [ 66.202991][ T7045] R10: 0000000000000012 R11: 0000000000000246 R12: 0000000000401b80 [ 66.210936][ T7045] R13: 0000000000401c10 R14: 0000000000000000 R15: 0000000000000000 [ 66.220309][ T7045] Kernel Offset: disabled [ 66.224682][ T7045] Rebooting in 86400 seconds..