Hello, syzbot found the following issue on: HEAD commit: bfd521e1 Add linux-next specific files for 20201203 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=14d5d403500000 kernel config: https://syzkaller.appspot.com/x/.config?x=76090eb4ba939f87 dashboard link: https://syzkaller.appspot.com/bug?extid=86800a8349c0f3f9466e compiler: gcc (GCC) 10.1.0-syz 20200507 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+86800a8349c0f3f9466e@xxxxxxxxxxxxxxxxxxxxxxxxx NODE_DATA(1) allocated [mem 0x23fff8000-0x23fffcfff] Zone ranges: DMA [mem 0x0000000000001000-0x0000000000ffffff] DMA32 [mem 0x0000000001000000-0x00000000ffffffff] Normal [mem 0x0000000100000000-0x000000023fffffff] Device empty Movable zone start for each node Early memory node ranges node 0: [mem 0x0000000000001000-0x000000000009efff] node 0: [mem 0x0000000000100000-0x00000000bfffcfff] node 0: [mem 0x0000000100000000-0x000000013fffffff] node 1: [mem 0x0000000140000000-0x000000023fffffff] Initmem setup node 0 [mem 0x0000000000001000-0x000000013fffffff] DMA: Zeroed struct page in unavailable ranges: 97 DMA32: Zeroed struct page in unavailable ranges: 3 Initmem setup node 1 [mem 0x0000000140000000-0x000000023fffffff] kasan: KernelAddressSanitizer initialized ACPI: PM-Timer IO Port: 0xb008 ACPI: LAPIC_NMI (acpi_id[0xff] dfl dfl lint[0x1]) IOAPIC[0]: apic_id 0, version 17, address 0xfec00000, GSI 0-23 ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 high level) ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level) ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 high level) ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 high level) Using ACPI (MADT) for SMP configuration information smpboot: Allowing 2 CPUs, 0 hotplug CPUs PM: hibernation: Registered nosave memory: [mem 0x00000000-0x00000fff] PM: hibernation: Registered nosave memory: [mem 0x0009f000-0x0009ffff] PM: hibernation: Registered nosave memory: [mem 0x000a0000-0x000effff] PM: hibernation: Registered nosave memory: [mem 0x000f0000-0x000fffff] PM: hibernation: Registered nosave memory: [mem 0xbfffd000-0xbfffffff] PM: hibernation: Registered nosave memory: [mem 0xc0000000-0xfffbbfff] PM: hibernation: Registered nosave memory: [mem 0xfffbc000-0xffffffff] [mem 0xc0000000-0xfffbbfff] available for PCI devices Booting paravirtualized kernel on KVM clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns setup_percpu: NR_CPUS:8 nr_cpumask_bits:8 nr_cpu_ids:2 nr_node_ids:2 percpu: Embedded 64 pages/cpu s223304 r8192 d30648 u1048576 kvm-guest: stealtime: cpu 0, msr b9e1fb80 kvm-guest: PV spinlocks enabled PV qspinlock hash table entries: 256 (order: 0, 4096 bytes, linear) Built 2 zonelists, mobility grouping on. Total pages: 2064262 Policy zone: Normal Kernel command line: earlyprintk=serial oops=panic panic_on_warn=1 nmi_watchdog=panic panic=86400 net.ifnames=0 sysctl.kernel.hung_task_all_cpu_backtrace=1 ima_policy=tcb watchdog_thresh=55 workqueue.watchdog_thresh=140 kvm-intel.nested=1 nf-conntrack-ftp.ports=20000 nf-conntrack-tftp.ports=20000 nf-conntrack-sip.ports=20000 nf-conntrack-irc.ports=20000 nf-conntrack-sane.ports=20000 vivid.n_devs=16 vivid.multiplanar=1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2 netrom.nr_ndevs=16 rose.rose_ndevs=16 spec_store_bypass_disable=prctl numa=fake=2 nopcid dummy_hcd.num=8 binder.debug_mask=0 rcupdate.rcu_expedited=1 root=/dev/sda console=ttyS0 vsyscall=native BOOT_IMAGE=/vmlinuz root=/dev/sda1 console=ttyS0 earlyprintk=serial vsyscall=native oops=panic panic_on_warn=1 nmi_watchdog=panic panic=86400 net.ifnames=0 sysctl.kernel.hung_task_all_cpu_backtrace=1 mem auto-init: stack:off, heap alloc:on, heap free:off page:ffffea0000000000 is uninitialized and poisoned raw: ffffffffffffffff ffffea0000000008 ffffea0000000008 ffffffffffffffff raw: ffffffffffffffff ffffffffffffffff ffffffffffffffff ffffffffffffffff page dumped because: VM_BUG_ON_PAGE(1 && PageCompound(page)) ------------[ cut here ]------------ kernel BUG at include/linux/page-flags.h:356! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 0 Comm: swapper Not tainted 5.10.0-rc6-next-20201203-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__SetPageReserved include/linux/page-flags.h:356 [inline] RIP: 0010:reserve_bootmem_region+0xc8/0x128 mm/page_alloc.c:1522 Code: e8 03 42 80 3c 30 00 74 08 48 89 ef e8 a1 54 c3 f8 48 8b 45 00 0f ba e0 10 73 11 48 c7 c6 00 e9 55 89 48 89 ef e8 08 53 b1 f8 <0f> 0b 4c 89 e8 48 c1 e8 03 42 80 3c 30 00 74 08 4c 89 ef e8 70 54 RSP: 0000:ffffffff8b007d98 EFLAGS: 00010096 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffffffff8b09b000 RSI: ffffffff88b71174 RDI: 0000000000000003 RBP: ffffea0000000000 R08: ffffffffffffffff R09: 0000000000000001 R10: ffffffff88b7111b R11: 0000000000000000 R12: 0000000000000010 R13: ffffea0000000008 R14: dffffc0000000000 R15: ffffffff8b007e20 FS: 0000000000000000(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff88823ffff000 CR3: 000000000b08e000 CR4: 00000000000406b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: free_low_memory_core_early mm/memblock.c:2051 [inline] memblock_free_all+0xf0/0x2c7 mm/memblock.c:2100 mem_init+0x1d/0x2b5 arch/x86/mm/init_64.c:1292 mm_init+0xa4/0xcc init/main.c:831 start_kernel+0x184/0x491 init/main.c:907 secondary_startup_64_no_verify+0xb0/0xbb Modules linked in: random: get_random_bytes called from init_oops_id kernel/panic.c:546 [inline] with crng_init=0 random: get_random_bytes called from init_oops_id kernel/panic.c:543 [inline] with crng_init=0 random: get_random_bytes called from print_oops_end_marker kernel/panic.c:556 [inline] with crng_init=0 random: get_random_bytes called from oops_exit+0x58/0x80 kernel/panic.c:567 with crng_init=0 ---[ end trace 9fcd7b4745fb867f ]--- RIP: 0010:__SetPageReserved include/linux/page-flags.h:356 [inline] RIP: 0010:reserve_bootmem_region+0xc8/0x128 mm/page_alloc.c:1522 Code: e8 03 42 80 3c 30 00 74 08 48 89 ef e8 a1 54 c3 f8 48 8b 45 00 0f ba e0 10 73 11 48 c7 c6 00 e9 55 89 48 89 ef e8 08 53 b1 f8 <0f> 0b 4c 89 e8 48 c1 e8 03 42 80 3c 30 00 74 08 4c 89 ef e8 70 54 RSP: 0000:ffffffff8b007d98 EFLAGS: 00010096 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffffffff8b09b000 RSI: ffffffff88b71174 RDI: 0000000000000003 RBP: ffffea0000000000 R08: ffffffffffffffff R09: 0000000000000001 R10: ffffffff88b7111b R11: 0000000000000000 R12: 0000000000000010 R13: ffffea0000000008 R14: dffffc0000000000 R15: ffffffff8b007e20 FS: 0000000000000000(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff88823ffff000 CR3: 000000000b08e000 CR4: 00000000000406b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 --- This report is generated by a bot. 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