[ 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 [ 0.000005][ T0] kvm-clock: cpu 0, msr be79001, primary cpu clock [ 0.000006][ T0] kvm-clock: using sched offset of 3285156390 cycles [ 0.001224][ T0] clocksource: kvm-clock: mask: 0xffffffffffffffff max_cycles: 0x1cd42e4dffb, max_idle_ns: 881590591483 ns [ 0.004368][ T0] tsc: Detected 2300.000 MHz processor [ 0.007089][ T0] last_pfn = 0x220000 max_arch_pfn = 0x400000000 [ 0.008267][ T0] x86/PAT: Configuration [0-7]: WB WC UC- UC WB WP UC- WT [ 0.010279][ T0] last_pfn = 0xbfffd max_arch_pfn = 0x400000000 [ 0.018003][ T0] found SMP MP-table at [mem 0x000f2390-0x000f239f] [ 0.019189][ T0] check: Scanning 1 areas for low memory corruption [ 0.020174][ T0] Using GB pages for direct mapping [ 0.023593][ T0] ACPI: Early table checksum verification disabled [ 0.024529][ T0] ACPI: RSDP 0x00000000000F2110 000014 (v00 Google) [ 0.025469][ T0] ACPI: RSDT 0x00000000BFFFFFC0 000038 (v01 Google GOOGRSDT 00000001 GOOG 00000001) [ 0.026990][ T0] ACPI: FACP 0x00000000BFFFF380 0000F4 (v02 Google GOOGFACP 00000001 GOOG 00000001) [ 0.028312][ T0] ACPI: DSDT 0x00000000BFFFDAC0 0018BA (v01 Google GOOGDSDT 00000001 GOOG 00000001) [ 0.029766][ T0] ACPI: FACS 0x00000000BFFFDA80 000040 [ 0.030531][ T0] ACPI: FACS 0x00000000BFFFDA80 000040 [ 0.031290][ T0] ACPI: SRAT 0x00000000BFFFFEB0 0000C8 (v03 Google GOOGSRAT 00000001 GOOG 00000001) [ 0.032716][ T0] ACPI: APIC 0x00000000BFFFFE00 000076 (v05 Google GOOGAPIC 00000001 GOOG 00000001) [ 0.034011][ T0] ACPI: SSDT 0x00000000BFFFF480 000980 (v01 Google GOOGSSDT 00000001 GOOG 00000001) [ 0.035437][ T0] ACPI: WAET 0x00000000BFFFFE80 000028 (v01 Google GOOGWAET 00000001 GOOG 00000001) [ 0.037427][ T0] SRAT: PXM 0 -> APIC 0x00 -> Node 0 [ 0.038164][ T0] SRAT: PXM 0 -> APIC 0x01 -> Node 0 [ 0.039220][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x00000000-0x0009ffff] [ 0.040199][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x00100000-0xbfffffff] [ 0.041138][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x100000000-0x21fffffff] [ 0.042163][ T0] NUMA: Node 0 [mem 0x00000000-0x0009ffff] + [mem 0x00100000-0xbfffffff] -> [mem 0x00000000-0xbfffffff] [ 0.044203][ T0] NUMA: Node 0 [mem 0x00000000-0xbfffffff] + [mem 0x100000000-0x21fffffff] -> [mem 0x00000000-0x21fffffff] [ 0.046458][ T0] Faking node 0 at [mem 0x0000000000000000-0x000000012fffffff] (4864MB) [ 0.047676][ T0] Faking node 1 at [mem 0x0000000130000000-0x000000021fffffff] (3840MB) [ 0.049305][ T0] NODE_DATA(0) allocated [mem 0x12fffb000-0x12fffffff] [ 0.052105][ T0] NODE_DATA(1) allocated [mem 0x21fff8000-0x21fffcfff] [ 0.106210][ T0] Zone ranges: [ 0.106879][ T0] DMA [mem 0x0000000000001000-0x0000000000ffffff] [ 0.107919][ T0] DMA32 [mem 0x0000000001000000-0x00000000ffffffff] [ 0.109296][ T0] Normal [mem 0x0000000100000000-0x000000021fffffff] [ 0.110240][ T0] Device empty [ 0.110867][ T0] Movable zone start for each node [ 0.111749][ T0] Early memory node ranges [ 0.112515][ T0] node 0: [mem 0x0000000000001000-0x000000000009efff] [ 0.113564][ T0] node 0: [mem 0x0000000000100000-0x00000000bfffcfff] [ 0.114612][ T0] node 0: [mem 0x0000000100000000-0x000000012fffffff] [ 0.115647][ T0] node 1: [mem 0x0000000130000000-0x000000021fffffff] [ 0.116938][ T0] Zeroed struct page in unavailable ranges: 101 pages [ 0.116945][ T0] Initmem setup node 0 [mem 0x0000000000001000-0x000000012fffffff] [ 0.147987][ T0] Initmem setup node 1 [mem 0x0000000130000000-0x000000021fffffff] [ 0.605265][ T0] kasan: KernelAddressSanitizer initialized [ 0.606773][ T0] ACPI: PM-Timer IO Port: 0xb008 [ 0.607863][ T0] ACPI: LAPIC_NMI (acpi_id[0xff] dfl dfl lint[0x1]) [ 0.609021][ T0] IOAPIC[0]: apic_id 0, version 17, address 0xfec00000, GSI 0-23 [ 0.610078][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 high level) [ 0.611176][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level) [ 0.612677][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 high level) [ 0.614078][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 high level) [ 0.615290][ T0] Using ACPI (MADT) for SMP configuration information [ 0.616248][ T0] smpboot: Allowing 2 CPUs, 0 hotplug CPUs [ 0.617941][ T0] PM: hibernation: Registered nosave memory: [mem 0x00000000-0x00000fff] [ 0.619632][ T0] PM: hibernation: Registered nosave memory: [mem 0x0009f000-0x0009ffff] [ 0.620883][ T0] PM: hibernation: Registered nosave memory: [mem 0x000a0000-0x000effff] [ 0.622187][ T0] PM: hibernation: Registered nosave memory: [mem 0x000f0000-0x000fffff] [ 0.623480][ T0] PM: hibernation: Registered nosave memory: [mem 0xbfffd000-0xbfffffff] [ 0.624800][ T0] PM: hibernation: Registered nosave memory: [mem 0xc0000000-0xfffbbfff] [ 0.626183][ T0] PM: hibernation: Registered nosave memory: [mem 0xfffbc000-0xffffffff] [ 0.628273][ T0] [mem 0xc0000000-0xfffbbfff] available for PCI devices [ 0.629242][ T0] Booting paravirtualized kernel on KVM [ 0.630139][ T0] clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns [ 0.683767][ T0] setup_percpu: NR_CPUS:64 nr_cpumask_bits:64 nr_cpu_ids:2 nr_node_ids:2 [ 0.686458][ T0] percpu: Embedded 65 pages/cpu s226760 r8192 d31288 u1048576 [ 0.687801][ T0] PV qspinlock hash table entries: 256 (order: 0, 4096 bytes, linear) [ 0.688970][ T0] Built 2 zonelists, mobility grouping on. Total pages: 1935238 [ 0.690284][ T0] Policy zone: Normal [ 0.690966][ 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 [ 0.704578][ T0] mem auto-init: stack:off, heap alloc:on, heap free:off [ 1.602019][ T0] Memory: 6461436K/7863916K available (116743K kernel code, 17432K rwdata, 21772K rodata, 2784K init, 24280K bss, 1402480K reserved, 0K cma-reserved) [ 1.610395][ T0] Running RCU self tests [ 1.611156][ T0] rcu: Preemptible hierarchical RCU implementation. [ 1.612134][ T0] rcu: RCU lockdep checking is enabled. [ 1.613100][ T0] rcu: RCU restricting CPUs from NR_CPUS=64 to nr_cpu_ids=2. [ 1.614512][ T0] rcu: RCU callback double-/use-after-free debug enabled. [ 1.615565][ T0] rcu: RCU debug extended QS entry/exit. [ 1.616610][ T0] Trampoline variant of Tasks RCU enabled. [ 1.617707][ T0] rcu: RCU calculated value of scheduler-enlistment delay is 10 jiffies. [ 1.619546][ T0] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2 [ 1.629795][ T0] NR_IRQS: 4352, nr_irqs: 440, preallocated irqs: 16 [ 1.632192][ T0] random: get_random_bytes called from start_kernel+0x672/0x9fb with crng_init=0 [ 1.636892][ T0] Console: colour VGA+ 80x25 [ 1.639178][ T0] printk: console [ttyS0] enabled [ 1.639178][ T0] printk: console [ttyS0] enabled [ 1.640932][ T0] printk: bootconsole [earlyser0] disabled [ 1.640932][ T0] printk: bootconsole [earlyser0] disabled [ 1.642962][ T0] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar [ 1.644635][ T0] ... MAX_LOCKDEP_SUBCLASSES: 8 [ 1.645347][ T0] ... MAX_LOCK_DEPTH: 48 [ 1.646041][ T0] ... MAX_LOCKDEP_KEYS: 8192 [ 1.646859][ T0] ... CLASSHASH_SIZE: 4096 [ 1.647737][ T0] ... MAX_LOCKDEP_ENTRIES: 32768 [ 1.648779][ T0] ... MAX_LOCKDEP_CHAINS: 65536 [ 1.649613][ T0] ... CHAINHASH_SIZE: 32768 [ 1.650458][ T0] memory used by lock dependency info: 6301 kB [ 1.651395][ T0] memory used for stack traces: 4224 kB [ 1.652267][ T0] per task-struct memory footprint: 1920 bytes [ 1.654326][ T0] mempolicy: Enabling automatic NUMA balancing. Configure with numa_balancing= or the kernel.numa_balancing sysctl [ 1.656109][ T0] ACPI: Core revision 20200528 [ 1.658040][ T0] APIC: Switch to symmetric I/O mode setup [ 1.659447][ T0] x2apic enabled [ 1.661449][ T0] Switched APIC routing to physical x2apic. [ 1.665675][ T0] ..TIMER: vector=0x30 apic1=0 pin1=0 apic2=-1 pin2=-1 [ 1.666755][ T0] clocksource: tsc-early: mask: 0xffffffffffffffff max_cycles: 0x212735223b2, max_idle_ns: 440795277976 ns [ 1.669085][ T0] Calibrating delay loop (skipped) preset value.. 4600.00 BogoMIPS (lpj=23000000) [ 1.670659][ T0] pid_max: default: 32768 minimum: 301 [ 1.672715][ T0] LSM: Security Framework initializing [ 1.673690][ T0] LSM: security= is ignored because it is superseded by lsm= [ 1.675026][ T0] Yama: becoming mindful. [ 1.675994][ T0] TOMOYO Linux initialized [ 1.679240][ T0] AppArmor: AppArmor initialized [ 1.687637][ T0] Dentry cache hash table entries: 1048576 (order: 11, 8388608 bytes, vmalloc) [ 1.690019][ C0] ------------[ cut here ]------------ [ 1.690024][ C0] WARNING: CPU: 0 PID: 0 at mm/slab.h:232 kmem_cache_free+0x0/0x200 [ 1.690027][ C0] Kernel panic - not syncing: panic_on_warn set ... [ 1.690030][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.8.0-rc1-next-20200621-syzkaller #0 [ 1.690034][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1.690035][ C0] Call Trace: [ 1.690037][ C0] dump_stack+0x18f/0x20d [ 1.690039][ C0] ? free_alien_cache.part.0+0x60/0x70 [ 1.690041][ C0] panic+0x2e3/0x75c [ 1.690043][ C0] ? __warn_printk+0xf3/0xf3 [ 1.690044][ C0] ? printk+0xba/0xed [ 1.690046][ C0] ? log_store.cold+0x16/0x16 [ 1.690048][ C0] ? __kmem_cache_release+0x80/0x80 [ 1.690050][ C0] ? __warn.cold+0x14/0x3a [ 1.690052][ C0] ? __warn+0xd6/0x1b2 [ 1.690054][ C0] ? __kmem_cache_release+0x80/0x80 [ 1.690055][ C0] __warn.cold+0x2f/0x3a [ 1.690057][ C0] ? __kmem_cache_release+0x80/0x80 [ 1.690059][ C0] report_bug+0x271/0x2f0 [ 1.690061][ C0] exc_invalid_op+0x1b9/0x370 [ 1.690063][ C0] asm_exc_invalid_op+0x12/0x20 [ 1.690065][ C0] RIP: 0010:kmem_cache_free+0x0/0x200 [ 1.690072][ 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 [ 1.690074][ C0] RSP: 0000:ffffffff89a07a58 EFLAGS: 00010293 [ 1.690079][ C0] RAX: ffffffff89a86580 RBX: ffff8880aa01f0e8 RCX: ffffffff81a84573 [ 1.690082][ C0] RDX: 0000000000000000 RSI: ffff8880aa01f480 RDI: ffff8880aa00fe00 [ 1.690085][ C0] RBP: ffff8880aa01f4a8 R08: ffffffff89a86580 R09: fffffbfff1340f3f [ 1.690087][ C0] R10: 0000000000000003 R11: fffffbfff1340f3e R12: ffff8880aa01f4b0 [ 1.690090][ C0] R13: ffff8880aa01f688 R14: ffff8880aa01f480 R15: ffffc90000000000 [ 1.690092][ C0] ? alloc_vmap_area+0x1373/0x1df0 [ 1.690094][ C0] alloc_vmap_area+0x1494/0x1df0 [ 1.690097][ C0] ? kmem_cache_alloc_node_trace+0x445/0x930 [ 1.690099][ C0] ? free_vmap_area+0x1b00/0x1b00 [ 1.690101][ C0] __get_vm_area_node+0x178/0x3b0 [ 1.690103][ C0] ? alloc_large_system_hash+0x1c9/0x2e2 [ 1.690105][ C0] __vmalloc_node_range+0x12c/0x910 [ 1.690107][ C0] ? alloc_large_system_hash+0x1c9/0x2e2 [ 1.690109][ C0] ? rwlock_bug.part.0+0x90/0x90 [ 1.690111][ C0] ? lock_release+0x464/0x800 [ 1.690112][ C0] ? vfree_atomic+0xe0/0xe0 [ 1.690114][ C0] ? do_raw_spin_unlock+0x173/0x260 [ 1.690116][ C0] ? _raw_spin_unlock+0x24/0x40 [ 1.690118][ C0] ? __get_vm_area_node+0x2e2/0x3b0 [ 1.690120][ C0] __vmalloc_node_range+0x76c/0x910 [ 1.690123][ C0] ? alloc_large_system_hash+0x1c9/0x2e2 [ 1.690125][ C0] ? kmem_cache_create_usercopy+0x257/0x300 [ 1.690127][ C0] ? lock_release+0x464/0x800 [ 1.690128][ C0] ? vfree_atomic+0xe0/0xe0 [ 1.690130][ C0] ? lock_downgrade+0x840/0x840 [ 1.690132][ C0] ? do_tune_cpucache+0x140/0x210 [ 1.690134][ C0] ? alloc_large_system_hash+0x1c9/0x2e2 [ 1.690136][ C0] __vmalloc+0x69/0x80 [ 1.690138][ C0] ? alloc_large_system_hash+0x1c9/0x2e2 [ 1.690140][ C0] alloc_large_system_hash+0x1c9/0x2e2 [ 1.690142][ C0] inode_init+0xab/0xbc [ 1.690144][ C0] vfs_caches_init+0x104/0x11e [ 1.690146][ C0] ? trace_init_perf_perm_irq_work_exit+0xe/0xe [ 1.690148][ C0] start_kernel+0x978/0x9fb [ 1.690150][ C0] ? mem_encrypt_init+0x5/0x5 [ 1.690151][ C0] ? x86_family+0x3d/0x50 [ 1.690153][ C0] ? load_ucode_bsp+0x23d/0x27d [ 1.690155][ C0] secondary_startup_64+0xa4/0xb0