[ 0.000000][ T0] Linux version 5.8.0-rc1-next-20200621-syzkaller (syzkaller@syzkaller) (gcc (GCC) 9.0.0 20181231 (experimental), GNU ld (GNU Binutils for Ubuntu) 2.26.1) #0 SMP PREEMPT now [ 0.000000][ T0] Command line: BOOT_IMAGE=/vmlinuz root=/dev/sda1 console=ttyS0 earlyprintk=serial vsyscall=native rodata=n oops=panic panic_on_warn=1 nmi_watchdog=panic panic=86400 net.ifnames=0 sysctl.kernel.hung_task_all_cpu_backtrace=1 security=apparmor lsm=lockdown,yama,safesetid,integrity,tomoyo,apparmor ima_policy=tcb 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 [ 0.000000][ T0] KERNEL supported cpus: [ 0.000000][ T0] Intel GenuineIntel [ 0.000000][ T0] AMD AuthenticAMD [ 0.000000][ T0] Centaur CentaurHauls [ 0.000000][ T0] x86/fpu: Supporting XSAVE feature 0x001: 'x87 floating point registers' [ 0.000000][ T0] x86/fpu: Supporting XSAVE feature 0x002: 'SSE registers' [ 0.000000][ T0] x86/fpu: Supporting XSAVE feature 0x004: 'AVX registers' [ 0.000000][ T0] x86/fpu: xstate_offset[2]: 576, xstate_sizes[2]: 256 [ 0.000000][ T0] x86/fpu: Enabled xstate features 0x7, context size is 832 bytes, using 'standard' format. [ 0.000000][ T0] BIOS-provided physical RAM map: [ 0.000000][ T0] BIOS-e820: [mem 0x0000000000000000-0x000000000009fbff] usable [ 0.000000][ T0] BIOS-e820: [mem 0x000000000009fc00-0x000000000009ffff] reserved [ 0.000000][ T0] BIOS-e820: [mem 0x00000000000f0000-0x00000000000fffff] reserved [ 0.000000][ T0] BIOS-e820: [mem 0x0000000000100000-0x00000000bfffcfff] usable [ 0.000000][ T0] BIOS-e820: [mem 0x00000000bfffd000-0x00000000bfffffff] reserved [ 0.000000][ T0] BIOS-e820: [mem 0x00000000fffbc000-0x00000000ffffffff] reserved [ 0.000000][ T0] BIOS-e820: [mem 0x0000000100000000-0x000000021fffffff] usable [ 0.000000][ T0] printk: bootconsole [earlyser0] enabled [ 0.000000][ T0] Malformed early option 'vsyscall' [ 0.000000][ T0] nopcid: PCID feature disabled [ 0.000000][ T0] NX (Execute Disable) protection: active [ 0.000000][ T0] SMBIOS 2.4 present. [ 0.000000][ T0] DMI: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 0.000000][ T0] Hypervisor detected: KVM [ 0.000000][ T0] kvm-clock: Using msrs 4b564d01 and 4b564d00 [ 0.000006][ T0] kvm-clock: cpu 0, msr be79001, primary cpu clock [ 0.000006][ T0] kvm-clock: using sched offset of 3118695071 cycles [ 0.001947][ T0] clocksource: kvm-clock: mask: 0xffffffffffffffff max_cycles: 0x1cd42e4dffb, max_idle_ns: 881590591483 ns [ 0.011482][ T0] tsc: Detected 2300.000 MHz processor [ 0.014416][ T0] last_pfn = 0x220000 max_arch_pfn = 0x400000000 [ 0.023211][ T0] x86/PAT: Configuration [0-7]: WB WC UC- UC WB WP UC- WT [ 0.024860][ T0] last_pfn = 0xbfffd max_arch_pfn = 0x400000000 [ 0.032006][ T0] found SMP MP-table at [mem 0x000f2390-0x000f239f] [ 0.033472][ T0] check: Scanning 1 areas for low memory corruption [ 0.036800][ T0] Using GB pages for direct mapping [ 0.040232][ T0] ACPI: Early table checksum verification disabled [ 0.042074][ T0] ACPI: RSDP 0x00000000000F2110 000014 (v00 Google) [ 0.043703][ T0] ACPI: RSDT 0x00000000BFFFFFC0 000038 (v01 Google GOOGRSDT 00000001 GOOG 00000001) [ 0.046487][ T0] ACPI: FACP 0x00000000BFFFF380 0000F4 (v02 Google GOOGFACP 00000001 GOOG 00000001) [ 0.049161][ T0] ACPI: DSDT 0x00000000BFFFDAC0 0018BA (v01 Google GOOGDSDT 00000001 GOOG 00000001) [ 0.052111][ T0] ACPI: FACS 0x00000000BFFFDA80 000040 [ 0.053650][ T0] ACPI: FACS 0x00000000BFFFDA80 000040 [ 0.055021][ T0] ACPI: SRAT 0x00000000BFFFFEB0 0000C8 (v03 Google GOOGSRAT 00000001 GOOG 00000001) [ 0.057144][ T0] ACPI: APIC 0x00000000BFFFFE00 000076 (v05 Google GOOGAPIC 00000001 GOOG 00000001) [ 0.060121][ T0] ACPI: SSDT 0x00000000BFFFF480 000980 (v01 Google GOOGSSDT 00000001 GOOG 00000001) [ 0.062975][ T0] ACPI: WAET 0x00000000BFFFFE80 000028 (v01 Google GOOGWAET 00000001 GOOG 00000001) [ 0.065916][ T0] SRAT: PXM 0 -> APIC 0x00 -> Node 0 [ 0.067238][ T0] SRAT: PXM 0 -> APIC 0x01 -> Node 0 [ 0.068197][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x00000000-0x0009ffff] [ 0.069701][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x00100000-0xbfffffff] [ 0.071014][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x100000000-0x21fffffff] [ 0.073076][ T0] NUMA: Node 0 [mem 0x00000000-0x0009ffff] + [mem 0x00100000-0xbfffffff] -> [mem 0x00000000-0xbfffffff] [ 0.075218][ T0] NUMA: Node 0 [mem 0x00000000-0xbfffffff] + [mem 0x100000000-0x21fffffff] -> [mem 0x00000000-0x21fffffff] [ 0.078294][ T0] Faking node 0 at [mem 0x0000000000000000-0x000000012fffffff] (4864MB) [ 0.079992][ T0] Faking node 1 at [mem 0x0000000130000000-0x000000021fffffff] (3840MB) [ 0.082950][ T0] NODE_DATA(0) allocated [mem 0x12fffb000-0x12fffffff] [ 0.085343][ T0] NODE_DATA(1) allocated [mem 0x21fff8000-0x21fffcfff] [ 0.141202][ T0] Zone ranges: [ 0.142090][ T0] DMA [mem 0x0000000000001000-0x0000000000ffffff] [ 0.144233][ T0] DMA32 [mem 0x0000000001000000-0x00000000ffffffff] [ 0.146465][ T0] Normal [mem 0x0000000100000000-0x000000021fffffff] [ 0.147461][ T0] Device empty [ 0.148496][ T0] Movable zone start for each node [ 0.149682][ T0] Early memory node ranges [ 0.150714][ T0] node 0: [mem 0x0000000000001000-0x000000000009efff] [ 0.152646][ T0] node 0: [mem 0x0000000000100000-0x00000000bfffcfff] [ 0.154709][ T0] node 0: [mem 0x0000000100000000-0x000000012fffffff] [ 0.156576][ T0] node 1: [mem 0x0000000130000000-0x000000021fffffff] [ 0.157948][ T0] Zeroed struct page in unavailable ranges: 101 pages [ 0.157954][ T0] Initmem setup node 0 [mem 0x0000000000001000-0x000000012fffffff] [ 0.189900][ T0] Initmem setup node 1 [mem 0x0000000130000000-0x000000021fffffff] [ 0.660910][ T0] kasan: KernelAddressSanitizer initialized [ 0.663218][ T0] ACPI: PM-Timer IO Port: 0xb008 [ 0.664135][ T0] ACPI: LAPIC_NMI (acpi_id[0xff] dfl dfl lint[0x1]) [ 0.666271][ T0] IOAPIC[0]: apic_id 0, version 17, address 0xfec00000, GSI 0-23 [ 0.668360][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 high level) [ 0.669973][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level) [ 0.671988][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 high level) [ 0.675892][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 high level) [ 0.678109][ T0] Using ACPI (MADT) for SMP configuration information [ 0.679799][ T0] smpboot: Allowing 2 CPUs, 0 hotplug CPUs [ 0.681633][ T0] PM: hibernation: Registered nosave memory: [mem 0x00000000-0x00000fff] [ 0.683628][ T0] PM: hibernation: Registered nosave memory: [mem 0x0009f000-0x0009ffff] [ 0.685518][ T0] PM: hibernation: Registered nosave memory: [mem 0x000a0000-0x000effff] [ 0.687174][ T0] PM: hibernation: Registered nosave memory: [mem 0x000f0000-0x000fffff] [ 0.688883][ T0] PM: hibernation: Registered nosave memory: [mem 0xbfffd000-0xbfffffff] [ 0.690860][ T0] PM: hibernation: Registered nosave memory: [mem 0xc0000000-0xfffbbfff] [ 0.693371][ T0] PM: hibernation: Registered nosave memory: [mem 0xfffbc000-0xffffffff] [ 0.695421][ T0] [mem 0xc0000000-0xfffbbfff] available for PCI devices [ 0.697167][ T0] Booting paravirtualized kernel on KVM [ 0.698173][ T0] clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns [ 0.752192][ T0] setup_percpu: NR_CPUS:64 nr_cpumask_bits:64 nr_cpu_ids:2 nr_node_ids:2 [ 0.754922][ T0] percpu: Embedded 65 pages/cpu s226760 r8192 d31288 u1048576 [ 0.757355][ T0] PV qspinlock hash table entries: 256 (order: 0, 4096 bytes, linear) [ 0.760452][ T0] Built 2 zonelists, mobility grouping on. Total pages: 1935238 [ 0.762597][ T0] Policy zone: Normal [ 0.763897][ T0] Kernel command line: BOOT_IMAGE=/vmlinuz root=/dev/sda1 console=ttyS0 earlyprintk=serial vsyscall=native rodata=n oops=panic panic_on_warn=1 nmi_watchdog=panic panic=86400 net.ifnames=0 sysctl.kernel.hung_task_all_cpu_backtrace=1 security=apparmor lsm=lockdown,yama,safesetid,integrity,tomoyo,apparmor ima_policy=tcb 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 [ 0.781368][ T0] mem auto-init: stack:off, heap alloc:on, heap free:off [ 1.692756][ T0] Memory: 6461436K/7863916K available (116743K kernel code, 17432K rwdata, 21772K rodata, 2784K init, 24280K bss, 1402480K reserved, 0K cma-reserved) [ 1.702049][ T0] Running RCU self tests [ 1.703689][ T0] rcu: Preemptible hierarchical RCU implementation. [ 1.705575][ T0] rcu: RCU lockdep checking is enabled. [ 1.706398][ T0] rcu: RCU restricting CPUs from NR_CPUS=64 to nr_cpu_ids=2. [ 1.708294][ T0] rcu: RCU callback double-/use-after-free debug enabled. [ 1.709689][ T0] rcu: RCU debug extended QS entry/exit. [ 1.710613][ T0] Trampoline variant of Tasks RCU enabled. [ 1.711759][ T0] rcu: RCU calculated value of scheduler-enlistment delay is 10 jiffies. [ 1.714351][ T0] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2 [ 1.723981][ T0] NR_IRQS: 4352, nr_irqs: 440, preallocated irqs: 16 [ 1.726327][ T0] random: get_random_bytes called from start_kernel+0x672/0x9fb with crng_init=0 [ 1.730391][ T0] Console: colour VGA+ 80x25 [ 1.733751][ T0] printk: console [ttyS0] enabled [ 1.733751][ T0] printk: console [ttyS0] enabled [ 1.736901][ T0] printk: bootconsole [earlyser0] disabled [ 1.736901][ T0] printk: bootconsole [earlyser0] disabled [ 1.739668][ T0] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar [ 1.741662][ T0] ... MAX_LOCKDEP_SUBCLASSES: 8 [ 1.743492][ T0] ... MAX_LOCK_DEPTH: 48 [ 1.744706][ T0] ... MAX_LOCKDEP_KEYS: 8192 [ 1.745716][ T0] ... CLASSHASH_SIZE: 4096 [ 1.747494][ T0] ... MAX_LOCKDEP_ENTRIES: 32768 [ 1.749345][ T0] ... MAX_LOCKDEP_CHAINS: 65536 [ 1.750367][ T0] ... CHAINHASH_SIZE: 32768 [ 1.751598][ T0] memory used by lock dependency info: 6301 kB [ 1.754035][ T0] memory used for stack traces: 4224 kB [ 1.756029][ T0] per task-struct memory footprint: 1920 bytes [ 1.758386][ T0] mempolicy: Enabling automatic NUMA balancing. Configure with numa_balancing= or the kernel.numa_balancing sysctl [ 1.761232][ T0] ACPI: Core revision 20200528 [ 1.763801][ T0] APIC: Switch to symmetric I/O mode setup [ 1.765636][ T0] x2apic enabled [ 1.767433][ T0] Switched APIC routing to physical x2apic. [ 1.771918][ T0] ..TIMER: vector=0x30 apic1=0 pin1=0 apic2=-1 pin2=-1 [ 1.774566][ T0] clocksource: tsc-early: mask: 0xffffffffffffffff max_cycles: 0x212735223b2, max_idle_ns: 440795277976 ns [ 1.776978][ T0] Calibrating delay loop (skipped) preset value.. 4600.00 BogoMIPS (lpj=23000000) [ 1.778894][ T0] pid_max: default: 32768 minimum: 301 [ 1.781363][ T0] LSM: Security Framework initializing [ 1.782940][ T0] LSM: security= is ignored because it is superseded by lsm= [ 1.787179][ T0] Yama: becoming mindful. [ 1.788150][ T0] TOMOYO Linux initialized [ 1.790754][ T0] AppArmor: AppArmor initialized [ 1.800118][ T0] Dentry cache hash table entries: 1048576 (order: 11, 8388608 bytes, vmalloc) [ 1.803337][ C0] ------------[ cut here ]------------ [ 1.803342][ C0] WARNING: CPU: 0 PID: 0 at mm/slab.h:232 kmem_cache_free+0x0/0x200 [ 1.803345][ C0] Kernel panic - not syncing: panic_on_warn set ... [ 1.803348][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.8.0-rc1-next-20200621-syzkaller #0 [ 1.803352][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1.803353][ C0] Call Trace: [ 1.803355][ C0] dump_stack+0x18f/0x20d [ 1.803357][ C0] ? free_alien_cache.part.0+0x60/0x70 [ 1.803359][ C0] panic+0x2e3/0x75c [ 1.803361][ C0] ? __warn_printk+0xf3/0xf3 [ 1.803362][ C0] ? printk+0xba/0xed [ 1.803364][ C0] ? log_store.cold+0x16/0x16 [ 1.803366][ C0] ? __kmem_cache_release+0x80/0x80 [ 1.803368][ C0] ? __warn.cold+0x14/0x3a [ 1.803369][ C0] ? __warn+0xd6/0x1b2 [ 1.803371][ C0] ? __kmem_cache_release+0x80/0x80 [ 1.803373][ C0] __warn.cold+0x2f/0x3a [ 1.803375][ C0] ? __kmem_cache_release+0x80/0x80 [ 1.803377][ C0] report_bug+0x271/0x2f0 [ 1.803379][ C0] exc_invalid_op+0x1b9/0x370 [ 1.803380][ C0] asm_exc_invalid_op+0x12/0x20 [ 1.803383][ C0] RIP: 0010:kmem_cache_free+0x0/0x200 [ 1.803390][ C0] Code: ff 49 c7 84 24 90 00 00 00 00 00 00 00 83 c3 01 39 1d 2c ec fb 08 77 af 5b 5d 41 5c 41 5d c3 90 66 2e 0f 1f 84 00 00 00 00 00 <0f> 0b 48 85 ff 0f 84 a9 01 00 00 48 83 3d 15 6b 02 08 00 0f 84 9c [ 1.803392][ C0] RSP: 0000:ffffffff89a07a58 EFLAGS: 00010293 [ 1.803396][ C0] RAX: ffffffff89a86580 RBX: ffff8880aa01f0e8 RCX: ffffffff81a84573 [ 1.803399][ C0] RDX: 0000000000000000 RSI: ffff8880aa01f480 RDI: ffff8880aa00fe00 [ 1.803402][ C0] RBP: ffff8880aa01f4a8 R08: ffffffff89a86580 R09: fffffbfff1340f3f [ 1.803405][ C0] R10: 0000000000000003 R11: fffffbfff1340f3e R12: ffff8880aa01f4b0 [ 1.803408][ C0] R13: ffff8880aa01f688 R14: ffff8880aa01f480 R15: ffffc90000000000 [ 1.803410][ C0] ? alloc_vmap_area+0x1373/0x1df0 [ 1.803412][ C0] alloc_vmap_area+0x1494/0x1df0 [ 1.803414][ C0] ? kmem_cache_alloc_node_trace+0x445/0x930 [ 1.803416][ C0] ? free_vmap_area+0x1b00/0x1b00 [ 1.803418][ C0] __get_vm_area_node+0x178/0x3b0 [ 1.803421][ C0] ? alloc_large_system_hash+0x1c9/0x2e2 [ 1.803423][ C0] __vmalloc_node_range+0x12c/0x910 [ 1.803425][ C0] ? alloc_large_system_hash+0x1c9/0x2e2 [ 1.803427][ C0] ? rwlock_bug.part.0+0x90/0x90 [ 1.803429][ C0] ? lock_release+0x464/0x800 [ 1.803430][ C0] ? vfree_atomic+0xe0/0xe0 [ 1.803432][ C0] ? do_raw_spin_unlock+0x173/0x260 [ 1.803434][ C0] ? _raw_spin_unlock+0x24/0x40 [ 1.803436][ C0] ? __get_vm_area_node+0x2e2/0x3b0 [ 1.803438][ C0] __vmalloc_node_range+0x76c/0x910 [ 1.803440][ C0] ? alloc_large_system_hash+0x1c9/0x2e2 [ 1.803443][ C0] ? kmem_cache_create_usercopy+0x257/0x300 [ 1.803444][ C0] ? lock_release+0x464/0x800 [ 1.803446][ C0] ? vfree_atomic+0xe0/0xe0 [ 1.803448][ C0] ? lock_downgrade+0x840/0x840 [ 1.803450][ C0] ? do_tune_cpucache+0x140/0x210 [ 1.803459][ C0] ? alloc_large_system_hash+0x1c9/0x2e2 [ 1.803461][ C0] __vmalloc+0x69/0x80 [ 1.803463][ C0] ? alloc_large_system_hash+0x1c9/0x2e2 [ 1.803465][ C0] alloc_large_system_hash+0x1c9/0x2e2 [ 1.803467][ C0] inode_init+0xab/0xbc [ 1.803469][ C0] vfs_caches_init+0x104/0x11e [ 1.803471][ C0] ? trace_init_perf_perm_irq_work_exit+0xe/0xe [ 1.803473][ C0] start_kernel+0x978/0x9fb [ 1.803475][ C0] ? mem_encrypt_init+0x5/0x5 [ 1.803476][ C0] ? x86_family+0x3d/0x50 [ 1.803478][ C0] ? load_ucode_bsp+0x23d/0x27d [ 1.803480][ C0] secondary_startup_64+0xa4/0xb0