Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.108' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 57.553231][ T7048] ------------[ cut here ]------------ [ 57.558976][ T7048] memtype_reserve failed: [mem 0xffffffffff000-0x003fefff], req write-back [ 57.569226][ T7048] WARNING: CPU: 0 PID: 7048 at arch/x86/mm/pat/memtype.c:589 memtype_reserve+0x69f/0x820 [ 57.579221][ T7048] Kernel panic - not syncing: panic_on_warn set ... [ 57.586330][ T7048] CPU: 0 PID: 7048 Comm: syz-executor902 Not tainted 5.7.0-rc4-syzkaller #0 [ 57.594977][ T7048] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 57.605631][ T7048] Call Trace: [ 57.608919][ T7048] dump_stack+0x188/0x20d [ 57.613258][ T7048] ? memtype_reserve+0x680/0x820 [ 57.618176][ T7048] panic+0x2e3/0x75c [ 57.622048][ T7048] ? add_taint.cold+0x16/0x16 [ 57.626718][ T7048] ? __probe_kernel_read+0x188/0x1d0 [ 57.631978][ T7048] ? __warn.cold+0x14/0x35 [ 57.636382][ T7048] ? __warn+0xd5/0x1c8 [ 57.640428][ T7048] ? memtype_reserve+0x69f/0x820 [ 57.645365][ T7048] __warn.cold+0x2f/0x35 [ 57.649594][ T7048] ? irq_work_queue+0xc3/0x100 [ 57.654333][ T7048] ? memtype_reserve+0x69f/0x820 [ 57.659251][ T7048] report_bug+0x27b/0x2f0 [ 57.663683][ T7048] do_error_trap+0x12b/0x220 [ 57.668271][ T7048] ? memtype_reserve+0x69f/0x820 [ 57.673189][ T7048] do_invalid_op+0x32/0x40 [ 57.677602][ T7048] ? memtype_reserve+0x69f/0x820 [ 57.682539][ T7048] invalid_op+0x23/0x30 [ 57.687138][ T7048] RIP: 0010:memtype_reserve+0x69f/0x820 [ 57.692810][ T7048] 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 [ 57.712547][ T7048] RSP: 0018:ffffc900015677a0 EFLAGS: 00010282 [ 57.718598][ T7048] RAX: 0000000000000000 RBX: 00000000003ff000 RCX: 0000000000000000 [ 57.726557][ T7048] RDX: 0000000000000000 RSI: ffffffff815ce181 RDI: fffff520002acee6 [ 57.734504][ T7048] RBP: ffffffff8828ff40 R08: ffff8880967f4580 R09: ffffed1015cc66a9 [ 57.742472][ T7048] R10: ffff8880ae633547 R11: ffffed1015cc66a8 R12: 000ffffffffff000 [ 57.750489][ T7048] R13: 1ffff920002acefa R14: dffffc0000000000 R15: 0000000000000000 [ 57.758496][ T7048] ? vprintk_func+0x81/0x17e [ 57.763102][ T7048] ? __lock_acquire+0x2184/0x4c50 [ 57.768138][ T7048] ? pat_init+0x440/0x440 [ 57.772449][ T7048] ? __init_cache_modes+0x270/0x270 [ 57.777650][ T7048] reserve_pfn_range+0x173/0x470 [ 57.782570][ T7048] ? arch_io_reserve_memtype_wc+0xa0/0xa0 [ 57.788279][ T7048] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 57.794255][ T7048] ? ksys_mmap_pgoff+0x457/0x5b0 [ 57.799231][ T7048] track_pfn_remap+0x18b/0x280 [ 57.803990][ T7048] remap_pfn_range+0x202/0xbf0 [ 57.808957][ T7048] ? __kmalloc+0x75f/0x7a0 [ 57.813372][ T7048] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 57.819082][ T7048] ? __kasan_kmalloc.constprop.0+0x75/0xd0 [ 57.824872][ T7048] ? copy_page_range+0x1f00/0x1f00 [ 57.829962][ T7048] ? __kmalloc+0x62f/0x7a0 [ 57.834354][ T7048] ? hcd_buffer_alloc+0x1ed/0x290 [ 57.839364][ T7048] dma_direct_mmap+0x197/0x260 [ 57.844128][ T7048] dma_mmap_attrs+0xfe/0x150 [ 57.848699][ T7048] usbdev_mmap+0x3ae/0x730 [ 57.853093][ T7048] ? usbdev_vm_close+0x40/0x40 [ 57.857841][ T7048] mmap_region+0xafb/0x1540 [ 57.863208][ T7048] ? __x64_sys_brk+0x6e0/0x6e0 [ 57.868093][ T7048] ? security_mmap_addr+0x81/0xa0 [ 57.873108][ T7048] ? get_unmapped_area+0x2a0/0x3c0 [ 57.878302][ T7048] do_mmap+0x849/0x1160 [ 57.882450][ T7048] vm_mmap_pgoff+0x197/0x200 [ 57.887026][ T7048] ? randomize_stack_top+0x100/0x100 [ 57.892326][ T7048] ? ksys_dup3+0x3c0/0x3c0 [ 57.896857][ T7048] ? up_read+0x1ab/0x750 [ 57.901101][ T7048] ksys_mmap_pgoff+0x457/0x5b0 [ 57.905934][ T7048] ? find_mergeable_anon_vma+0x2c0/0x2c0 [ 57.911553][ T7048] ? trace_hardirqs_off_caller+0x55/0x230 [ 57.917259][ T7048] do_syscall_64+0xf6/0x7d0 [ 57.921743][ T7048] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 57.927642][ T7048] RIP: 0033:0x443e79 [ 57.931648][ T7048] 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 [ 57.951338][ T7048] RSP: 002b:00007fff7fdf4028 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 [ 57.960168][ T7048] RAX: ffffffffffffffda RBX: 00000000004002e0 RCX: 0000000000443e79 [ 57.968205][ T7048] RDX: 0000000003000009 RSI: 0000000000400000 RDI: 0000000020000000 [ 57.976156][ T7048] RBP: 00000000006ce018 R08: 0000000000000003 R09: 0000000000000000 [ 57.984104][ T7048] R10: 0000000000000011 R11: 0000000000000246 R12: 0000000000401b80 [ 57.992067][ T7048] R13: 0000000000401c10 R14: 0000000000000000 R15: 0000000000000000 [ 58.001776][ T7048] Kernel Offset: disabled [ 58.006178][ T7048] Rebooting in 86400 seconds..