[ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty1. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.30' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 54.825627][ T7023] ------------[ cut here ]------------ [ 54.831174][ T7023] memtype_reserve failed: [mem 0xffffffffff000-0x003fefff], req write-back [ 54.841040][ T7023] WARNING: CPU: 0 PID: 7023 at arch/x86/mm/pat/memtype.c:589 memtype_reserve+0x69f/0x820 [ 54.850831][ T7023] Kernel panic - not syncing: panic_on_warn set ... [ 54.857393][ T7023] CPU: 0 PID: 7023 Comm: syz-executor032 Not tainted 5.7.0-rc4-syzkaller #0 [ 54.866122][ T7023] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 54.876160][ T7023] Call Trace: [ 54.879435][ T7023] dump_stack+0x188/0x20d [ 54.883742][ T7023] ? memtype_reserve+0x680/0x820 [ 54.888652][ T7023] panic+0x2e3/0x75c [ 54.892643][ T7023] ? add_taint.cold+0x16/0x16 [ 54.897356][ T7023] ? __probe_kernel_read+0x188/0x1d0 [ 54.902620][ T7023] ? __warn.cold+0x14/0x35 [ 54.907016][ T7023] ? __warn+0xd5/0x1c8 [ 54.911065][ T7023] ? memtype_reserve+0x69f/0x820 [ 54.915978][ T7023] __warn.cold+0x2f/0x35 [ 54.920196][ T7023] ? irq_work_queue+0xc3/0x100 [ 54.924933][ T7023] ? memtype_reserve+0x69f/0x820 [ 54.929847][ T7023] report_bug+0x27b/0x2f0 [ 54.934155][ T7023] do_error_trap+0x12b/0x220 [ 54.938720][ T7023] ? memtype_reserve+0x69f/0x820 [ 54.943633][ T7023] do_invalid_op+0x32/0x40 [ 54.948020][ T7023] ? memtype_reserve+0x69f/0x820 [ 54.952930][ T7023] invalid_op+0x23/0x30 [ 54.957064][ T7023] RIP: 0010:memtype_reserve+0x69f/0x820 [ 54.962581][ T7023] 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 [ 54.982157][ T7023] RSP: 0018:ffffc900014777a0 EFLAGS: 00010282 [ 54.988195][ T7023] RAX: 0000000000000000 RBX: 00000000003ff000 RCX: 0000000000000000 [ 54.996177][ T7023] RDX: 0000000000000000 RSI: ffffffff815ce181 RDI: fffff5200028eee6 [ 55.004131][ T7023] RBP: ffffffff8828ff40 R08: ffff888097816580 R09: ffffed1015cc66a9 [ 55.012079][ T7023] R10: ffff8880ae633547 R11: ffffed1015cc66a8 R12: 000ffffffffff000 [ 55.020040][ T7023] R13: 1ffff9200028eefa R14: dffffc0000000000 R15: 0000000000000000 [ 55.027998][ T7023] ? vprintk_func+0x81/0x17e [ 55.032564][ T7023] ? __lock_acquire+0x2184/0x4c50 [ 55.037564][ T7023] ? pat_init+0x440/0x440 [ 55.041866][ T7023] ? __init_cache_modes+0x270/0x270 [ 55.047044][ T7023] reserve_pfn_range+0x173/0x470 [ 55.051955][ T7023] ? arch_io_reserve_memtype_wc+0xa0/0xa0 [ 55.057650][ T7023] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 55.063601][ T7023] ? ksys_mmap_pgoff+0x457/0x5b0 [ 55.068514][ T7023] track_pfn_remap+0x18b/0x280 [ 55.073268][ T7023] remap_pfn_range+0x202/0xbf0 [ 55.078012][ T7023] ? __kmalloc+0x75f/0x7a0 [ 55.082501][ T7023] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 55.088025][ T7023] ? __kasan_kmalloc.constprop.0+0x75/0xd0 [ 55.093812][ T7023] ? copy_page_range+0x1f00/0x1f00 [ 55.098917][ T7023] ? __kmalloc+0x62f/0x7a0 [ 55.103308][ T7023] ? hcd_buffer_alloc+0x1ed/0x290 [ 55.108309][ T7023] dma_direct_mmap+0x197/0x260 [ 55.113325][ T7023] dma_mmap_attrs+0xfe/0x150 [ 55.117903][ T7023] usbdev_mmap+0x3ae/0x730 [ 55.122296][ T7023] ? usbdev_vm_close+0x40/0x40 [ 55.127041][ T7023] mmap_region+0xafb/0x1540 [ 55.131522][ T7023] ? __x64_sys_brk+0x6e0/0x6e0 [ 55.136258][ T7023] ? security_mmap_addr+0x81/0xa0 [ 55.141273][ T7023] ? get_unmapped_area+0x2a0/0x3c0 [ 55.146370][ T7023] do_mmap+0x849/0x1160 [ 55.150501][ T7023] vm_mmap_pgoff+0x197/0x200 [ 55.155071][ T7023] ? randomize_stack_top+0x100/0x100 [ 55.160329][ T7023] ? ksys_dup3+0x3c0/0x3c0 [ 55.164721][ T7023] ? up_read+0x1ab/0x750 [ 55.168939][ T7023] ksys_mmap_pgoff+0x457/0x5b0 [ 55.173679][ T7023] ? find_mergeable_anon_vma+0x2c0/0x2c0 [ 55.179285][ T7023] ? trace_hardirqs_off_caller+0x55/0x230 [ 55.184981][ T7023] do_syscall_64+0xf6/0x7d0 [ 55.189471][ T7023] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 55.195337][ T7023] RIP: 0033:0x443e79 [ 55.199206][ T7023] 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 [ 55.218782][ T7023] RSP: 002b:00007ffd1c367b88 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 [ 55.227164][ T7023] RAX: ffffffffffffffda RBX: 00000000004002e0 RCX: 0000000000443e79 [ 55.235108][ T7023] RDX: 0000000000000000 RSI: 0000000000400000 RDI: 0000000020000000 [ 55.243076][ T7023] RBP: 00000000006ce018 R08: 0000000000000003 R09: 0000000000000000 [ 55.251056][ T7023] R10: 0000000000000011 R11: 0000000000000246 R12: 0000000000401b80 [ 55.259017][ T7023] R13: 0000000000401c10 R14: 0000000000000000 R15: 0000000000000000 [ 55.268449][ T7023] Kernel Offset: disabled [ 55.272819][ T7023] Rebooting in 86400 seconds..