[ 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 '10.128.1.3' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 60.514794][ T7018] ------------[ cut here ]------------ [ 60.520862][ T7018] memtype_reserve failed: [mem 0xffffffffff000-0x003fefff], req write-back [ 60.530972][ T7018] WARNING: CPU: 0 PID: 7018 at arch/x86/mm/pat/memtype.c:589 memtype_reserve+0x69f/0x820 [ 60.541039][ T7018] Kernel panic - not syncing: panic_on_warn set ... [ 60.547683][ T7018] CPU: 0 PID: 7018 Comm: syz-executor593 Not tainted 5.7.0-rc4-syzkaller #0 [ 60.556455][ T7018] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.566510][ T7018] Call Trace: [ 60.570003][ T7018] dump_stack+0x188/0x20d [ 60.574332][ T7018] ? memtype_reserve+0x680/0x820 [ 60.579558][ T7018] panic+0x2e3/0x75c [ 60.583521][ T7018] ? add_taint.cold+0x16/0x16 [ 60.588442][ T7018] ? __probe_kernel_read+0x188/0x1d0 [ 60.593714][ T7018] ? __warn.cold+0x14/0x35 [ 60.598116][ T7018] ? __warn+0xd5/0x1c8 [ 60.602297][ T7018] ? memtype_reserve+0x69f/0x820 [ 60.607246][ T7018] __warn.cold+0x2f/0x35 [ 60.611646][ T7018] ? irq_work_queue+0xc3/0x100 [ 60.616525][ T7018] ? memtype_reserve+0x69f/0x820 [ 60.621564][ T7018] report_bug+0x27b/0x2f0 [ 60.626081][ T7018] do_error_trap+0x12b/0x220 [ 60.630690][ T7018] ? memtype_reserve+0x69f/0x820 [ 60.635628][ T7018] do_invalid_op+0x32/0x40 [ 60.640030][ T7018] ? memtype_reserve+0x69f/0x820 [ 60.644966][ T7018] invalid_op+0x23/0x30 [ 60.649122][ T7018] RIP: 0010:memtype_reserve+0x69f/0x820 [ 60.654643][ T7018] 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 [ 60.675373][ T7018] RSP: 0018:ffffc90000ea77a0 EFLAGS: 00010282 [ 60.681515][ T7018] RAX: 0000000000000000 RBX: 00000000003ff000 RCX: 0000000000000000 [ 60.689547][ T7018] RDX: 0000000000000000 RSI: ffffffff815ce181 RDI: fffff520001d4ee6 [ 60.697877][ T7018] RBP: ffffffff8828ff40 R08: ffff888095588500 R09: ffffed1015cc66a9 [ 60.705839][ T7018] R10: ffff8880ae633547 R11: ffffed1015cc66a8 R12: 000ffffffffff000 [ 60.714001][ T7018] R13: 1ffff920001d4efa R14: dffffc0000000000 R15: 0000000000000000 [ 60.721985][ T7018] ? vprintk_func+0x81/0x17e [ 60.726610][ T7018] ? __lock_acquire+0x2184/0x4c50 [ 60.731735][ T7018] ? pat_init+0x440/0x440 [ 60.736210][ T7018] ? __init_cache_modes+0x270/0x270 [ 60.741436][ T7018] reserve_pfn_range+0x173/0x470 [ 60.746394][ T7018] ? arch_io_reserve_memtype_wc+0xa0/0xa0 [ 60.752113][ T7018] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.758097][ T7018] ? ksys_mmap_pgoff+0x457/0x5b0 [ 60.763024][ T7018] track_pfn_remap+0x18b/0x280 [ 60.767807][ T7018] remap_pfn_range+0x202/0xbf0 [ 60.772549][ T7018] ? __kmalloc+0x75f/0x7a0 [ 60.776964][ T7018] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.782504][ T7018] ? __kasan_kmalloc.constprop.0+0x75/0xd0 [ 60.788291][ T7018] ? copy_page_range+0x1f00/0x1f00 [ 60.793377][ T7018] ? __kmalloc+0x62f/0x7a0 [ 60.797802][ T7018] ? hcd_buffer_alloc+0x1ed/0x290 [ 60.802834][ T7018] dma_direct_mmap+0x197/0x260 [ 60.807600][ T7018] dma_mmap_attrs+0xfe/0x150 [ 60.812171][ T7018] usbdev_mmap+0x3ae/0x730 [ 60.816591][ T7018] ? usbdev_vm_close+0x40/0x40 [ 60.821362][ T7018] mmap_region+0xafb/0x1540 [ 60.825953][ T7018] ? __x64_sys_brk+0x6e0/0x6e0 [ 60.830737][ T7018] ? security_mmap_addr+0x81/0xa0 [ 60.835922][ T7018] ? get_unmapped_area+0x2a0/0x3c0 [ 60.841044][ T7018] do_mmap+0x849/0x1160 [ 60.845221][ T7018] vm_mmap_pgoff+0x197/0x200 [ 60.850005][ T7018] ? randomize_stack_top+0x100/0x100 [ 60.855296][ T7018] ? ksys_dup3+0x3c0/0x3c0 [ 60.863555][ T7018] ? up_read+0x1ab/0x750 [ 60.868075][ T7018] ksys_mmap_pgoff+0x457/0x5b0 [ 60.873206][ T7018] ? find_mergeable_anon_vma+0x2c0/0x2c0 [ 60.878974][ T7018] ? trace_hardirqs_off_caller+0x55/0x230 [ 60.884791][ T7018] do_syscall_64+0xf6/0x7d0 [ 60.889422][ T7018] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 60.895312][ T7018] RIP: 0033:0x443e79 [ 60.899193][ T7018] 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 [ 60.919243][ T7018] RSP: 002b:00007ffc75b0e1a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 [ 60.927655][ T7018] RAX: ffffffffffffffda RBX: 00000000004002e0 RCX: 0000000000443e79 [ 60.936064][ T7018] RDX: 0000000000000000 RSI: 0000000000400000 RDI: 0000000020000000 [ 60.944295][ T7018] RBP: 00000000006ce018 R08: 0000000000000003 R09: 0000000000000000 [ 60.952375][ T7018] R10: 0000000000000011 R11: 0000000000000246 R12: 0000000000401b80 [ 60.960348][ T7018] R13: 0000000000401c10 R14: 0000000000000000 R15: 0000000000000000 [ 60.971677][ T7018] Kernel Offset: disabled [ 60.976053][ T7018] Rebooting in 86400 seconds..