[ 0.000000][ T0] Linux version 5.8.0-next-20200813-syzkaller (syzkaller@syzkaller) (gcc (GCC) 10.1.0-syz 20200507, 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=serialport: Connected to syzkaller.us-central1-c.ci-upstream-linux-next-kasan-gce-root-test-1 port 1 (session ID: 5438fd35f595d7c3bfb0cf402db741a430dab25fb62b13fd5a29bb94935fe872, active connections: 1). 86400 net.ifnames=0 sysctl.kernel.hung_task_all_cpu_backtrace=1 security=apparmor lsm=lockdown,yama,safesetid,integrity,tomoyo,apparmor,bpf 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 rcupdate.rcu_expedited=1 [ 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 [ 0.000004][ T0] kvm-clock: cpu 0, msr bf6a001, primary cpu clock [ 0.000004][ T0] kvm-clock: using sched offset of 4490696142 cycles [ 0.001111][ T0] clocksource: kvm-clock: mask: 0xffffffffffffffff max_cycles: 0x1cd42e4dffb, max_idle_ns: 881590591483 ns [ 0.004298][ T0] tsc: Detected 2300.000 MHz processor [ 0.006562][ T0] last_pfn = 0x220000 max_arch_pfn = 0x400000000 [ 0.008023][ T0] x86/PAT: Configuration [0-7]: WB WC UC- UC WB WP UC- WT [ 0.009727][ T0] last_pfn = 0xbfffd max_arch_pfn = 0x400000000 [ 0.016543][ T0] found SMP MP-table at [mem 0x000f2370-0x000f237f] [ 0.017947][ T0] check: Scanning 1 areas for low memory corruption [ 0.019142][ T0] Using GB pages for direct mapping [ 0.022249][ T0] ACPI: Early table checksum verification disabled [ 0.023704][ T0] ACPI: RSDP 0x00000000000F20F0 000014 (v00 Google) [ 0.024837][ T0] ACPI: RSDT 0x00000000BFFFFFC0 000038 (v01 Google GOOGRSDT 00000001 GOOG 00000001) [ 0.026299][ T0] ACPI: FACP 0x00000000BFFFF380 0000F4 (v02 Google GOOGFACP 00000001 GOOG 00000001) [ 0.027744][ T0] ACPI: DSDT 0x00000000BFFFDAC0 0018BA (v01 Google GOOGDSDT 00000001 GOOG 00000001) [ 0.029607][ T0] ACPI: FACS 0x00000000BFFFDA80 000040 [ 0.030623][ T0] ACPI: FACS 0x00000000BFFFDA80 000040 [ 0.031462][ T0] ACPI: SRAT 0x00000000BFFFFEB0 0000C8 (v03 Google GOOGSRAT 00000001 GOOG 00000001) [ 0.033544][ T0] ACPI: APIC 0x00000000BFFFFE00 000076 (v05 Google GOOGAPIC 00000001 GOOG 00000001) [ 0.035531][ T0] ACPI: SSDT 0x00000000BFFFF480 000980 (v01 Google GOOGSSDT 00000001 GOOG 00000001) [ 0.037273][ T0] ACPI: WAET 0x00000000BFFFFE80 000028 (v01 Google GOOGWAET 00000001 GOOG 00000001) [ 0.039420][ T0] SRAT: PXM 0 -> APIC 0x00 -> Node 0 [ 0.040261][ T0] SRAT: PXM 0 -> APIC 0x01 -> Node 0 [ 0.041506][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x00000000-0x0009ffff] [ 0.043125][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x00100000-0xbfffffff] [ 0.045008][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x100000000-0x21fffffff] [ 0.046483][ T0] NUMA: Node 0 [mem 0x00000000-0x0009ffff] + [mem 0x00100000-0xbfffffff] -> [mem 0x00000000-0xbfffffff] [ 0.048368][ T0] NUMA: Node 0 [mem 0x00000000-0xbfffffff] + [mem 0x100000000-0x21fffffff] -> [mem 0x00000000-0x21fffffff] [ 0.051085][ T0] Faking node 0 at [mem 0x0000000000000000-0x000000012fffffff] (4864MB) [ 0.052331][ T0] Faking node 1 at [mem 0x0000000130000000-0x000000021fffffff] (3840MB) [ 0.054275][ T0] NODE_DATA(0) allocated [mem 0x12fffb000-0x12fffffff] [ 0.056165][ T0] NODE_DATA(1) allocated [mem 0x21fff8000-0x21fffcfff] [ 0.106318][ T0] Zone ranges: [ 0.107082][ T0] DMA [mem 0x0000000000001000-0x0000000000ffffff] [ 0.108173][ T0] DMA32 [mem 0x0000000001000000-0x00000000ffffffff] [ 0.109196][ T0] Normal [mem 0x0000000100000000-0x000000021fffffff] [ 0.110286][ T0] Device empty [ 0.110857][ T0] Movable zone start for each node [ 0.111624][ T0] Early memory node ranges [ 0.112280][ T0] node 0: [mem 0x0000000000001000-0x000000000009efff] [ 0.113546][ T0] node 0: [mem 0x0000000000100000-0x00000000bfffcfff] [ 0.114573][ T0] node 0: [mem 0x0000000100000000-0x000000012fffffff] [ 0.115736][ T0] node 1: [mem 0x0000000130000000-0x000000021fffffff] [ 0.116765][ T0] Zeroed struct page in unavailable ranges: 101 pages [ 0.116774][ T0] Initmem setup node 0 [mem 0x0000000000001000-0x000000012fffffff] [ 0.147169][ T0] Initmem setup node 1 [mem 0x0000000130000000-0x000000021fffffff] [ 0.575119][ T0] kasan: KernelAddressSanitizer initialized [ 0.576850][ T0] ACPI: PM-Timer IO Port: 0xb008 [ 0.578074][ T0] ACPI: LAPIC_NMI (acpi_id[0xff] dfl dfl lint[0x1]) [ 0.579518][ T0] IOAPIC[0]: apic_id 0, version 17, address 0xfec00000, GSI 0-23 [ 0.580919][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 high level) [ 0.582051][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level) [ 0.583240][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 high level) [ 0.584630][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 high level) [ 0.586054][ T0] Using ACPI (MADT) for SMP configuration information [ 0.587117][ T0] smpboot: Allowing 2 CPUs, 0 hotplug CPUs [ 0.588180][ T0] PM: hibernation: Registered nosave memory: [mem 0x00000000-0x00000fff] [ 0.589644][ T0] PM: hibernation: Registered nosave memory: [mem 0x0009f000-0x0009ffff] [ 0.591189][ T0] PM: hibernation: Registered nosave memory: [mem 0x000a0000-0x000effff] [ 0.592693][ T0] PM: hibernation: Registered nosave memory: [mem 0x000f0000-0x000fffff] [ 0.594403][ T0] PM: hibernation: Registered nosave memory: [mem 0xbfffd000-0xbfffffff] [ 0.595659][ T0] PM: hibernation: Registered nosave memory: [mem 0xc0000000-0xfffbbfff] [ 0.597094][ T0] PM: hibernation: Registered nosave memory: [mem 0xfffbc000-0xffffffff] [ 0.598790][ T0] [mem 0xc0000000-0xfffbbfff] available for PCI devices [ 0.599869][ T0] Booting paravirtualized kernel on KVM [ 0.600829][ T0] clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns [ 0.651223][ T0] setup_percpu: NR_CPUS:64 nr_cpumask_bits:64 nr_cpu_ids:2 nr_node_ids:2 [ 0.653742][ T0] percpu: Embedded 65 pages/cpu s226696 r8192 d31352 u1048576 [ 0.655074][ T0] kvm-guest: PV spinlocks enabled [ 0.656042][ T0] PV qspinlock hash table entries: 256 (order: 0, 4096 bytes, linear) [ 0.657459][ T0] Built 2 zonelists, mobility grouping on. Total pages: 1935238 [ 0.658831][ T0] Policy zone: Normal [ 0.659869][ 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,bpf 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 rcupdate.rcu_expedited=1 [ 0.674792][ T0] mem auto-init: stack:off, heap alloc:on, heap free:off [ 1.408043][ T0] Memory: 6458876K/7863916K available (116743K kernel code, 18258K rwdata, 21644K rodata, 2812K init, 25364K bss, 1404784K reserved, 0K cma-reserved) [ 1.416021][ T0] Running RCU self tests [ 1.416924][ T0] rcu: Preemptible hierarchical RCU implementation. [ 1.418154][ T0] rcu: RCU lockdep checking is enabled. [ 1.419313][ T0] rcu: RCU restricting CPUs from NR_CPUS=64 to nr_cpu_ids=2. [ 1.421059][ T0] rcu: RCU callback double-/use-after-free debug enabled. [ 1.422887][ T0] rcu: RCU debug extended QS entry/exit. [ 1.424402][ T0] All grace periods are expedited (rcu_expedited). [ 1.426148][ T0] Trampoline variant of Tasks RCU enabled. [ 1.427855][ T0] rcu: RCU calculated value of scheduler-enlistment delay is 10 jiffies. [ 1.429575][ T0] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2 [ 1.439925][ T0] NR_IRQS: 4352, nr_irqs: 440, preallocated irqs: 16 [ 1.442132][ T0] random: get_random_bytes called from start_kernel+0x23b/0x46a with crng_init=0 [ 1.446673][ T0] Console: colour VGA+ 80x25 [ 1.449577][ T0] printk: console [ttyS0] enabled [ 1.449577][ T0] printk: console [ttyS0] enabled [ 1.451316][ T0] printk: bootconsole [earlyser0] disabled [ 1.451316][ T0] printk: bootconsole [earlyser0] disabled [ 1.453286][ T0] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar [ 1.454939][ T0] ... MAX_LOCKDEP_SUBCLASSES: 8 [ 1.458222][ T0] ... MAX_LOCK_DEPTH: 48 [ 1.458944][ T0] ... MAX_LOCKDEP_KEYS: 8192 [ 1.459671][ T0] ... CLASSHASH_SIZE: 4096 [ 1.460507][ T0] ... MAX_LOCKDEP_ENTRIES: 32768 [ 1.461353][ T0] ... MAX_LOCKDEP_CHAINS: 65536 [ 1.462269][ T0] ... CHAINHASH_SIZE: 32768 [ 1.463254][ T0] memory used by lock dependency info: 6301 kB [ 1.464266][ T0] memory used for stack traces: 4224 kB [ 1.465305][ T0] per task-struct memory footprint: 1920 bytes [ 1.466638][ T0] mempolicy: Enabling automatic NUMA balancing. Configure with numa_balancing= or the kernel.numa_balancing sysctl [ 1.468573][ T0] ACPI: Core revision 20200717 [ 1.470323][ T0] APIC: Switch to symmetric I/O mode setup [ 1.471972][ T0] x2apic enabled [ 1.473746][ T0] Switched APIC routing to physical x2apic. [ 1.477955][ T0] ..TIMER: vector=0x30 apic1=0 pin1=0 apic2=-1 pin2=-1 [ 1.479171][ T0] clocksource: tsc-early: mask: 0xffffffffffffffff max_cycles: 0x212735223b2, max_idle_ns: 440795277976 ns [ 1.481887][ T0] Calibrating delay loop (skipped) preset value.. 4600.00 BogoMIPS (lpj=23000000) [ 1.483987][ T0] pid_max: default: 32768 minimum: 301 [ 1.486075][ T0] LSM: Security Framework initializing [ 1.487704][ T0] LSM: security= is ignored because it is superseded by lsm= [ 1.489153][ T0] Yama: becoming mindful. [ 1.490162][ T0] TOMOYO Linux initialized [ 1.493031][ T0] AppArmor: AppArmor initialized [ 1.494045][ T0] LSM support for eBPF active [ 1.502772][ T0] Dentry cache hash table entries: 1048576 (order: 11, 8388608 bytes, vmalloc) [ 1.508820][ T0] Inode-cache hash table entries: 524288 (order: 10, 4194304 bytes, vmalloc) [ 1.511151][ T0] Mount-cache hash table entries: 16384 (order: 5, 131072 bytes, vmalloc) [ 1.511967][ T0] Mountpoint-cache hash table entries: 16384 (order: 5, 131072 bytes, vmalloc) [ 1.516481][ T0] ------------[ cut here ]------------ [ 1.517663][ T0] WARNING: CPU: 0 PID: 0 at mm/memcontrol.c:5226 mem_cgroup_css_alloc+0x535/0x1c30 [ 1.519489][ T0] Kernel panic - not syncing: panic_on_warn set ... [ 1.520543][ T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.8.0-next-20200813-syzkaller #0 [ 1.521879][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1.521879][ T0] Call Trace: [ 1.521879][ T0] dump_stack+0x18f/0x20d [ 1.521879][ T0] panic+0x2e3/0x75c [ 1.521879][ T0] ? __warn_printk+0xf3/0xf3 [ 1.521879][ T0] ? printk+0xba/0xed [ 1.521879][ T0] ? log_store.cold+0x16/0x16 [ 1.521879][ T0] ? __warn.cold+0x5/0x4a [ 1.521879][ T0] ? __warn+0xd6/0x1f2 [ 1.521879][ T0] ? mem_cgroup_css_alloc+0x535/0x1c30 [ 1.521879][ T0] __warn.cold+0x20/0x4a [ 1.521879][ T0] ? mem_cgroup_css_alloc+0x535/0x1c30 [ 1.521879][ T0] report_bug+0x1bd/0x210 [ 1.521879][ T0] handle_bug+0x38/0x90 [ 1.521879][ T0] exc_invalid_op+0x14/0x40 [ 1.521879][ T0] asm_exc_invalid_op+0x12/0x20 [ 1.521879][ T0] RIP: 0010:mem_cgroup_css_alloc+0x535/0x1c30 [ 1.521879][ T0] Code: 01 00 48 8d bb 48 14 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 74 81 e8 a0 79 c0 f9 e9 77 ff ff ff <0f> 0b e9 21 fc ff ff 48 89 ef e8 3c af c5 f9 48 b8 00 00 00 00 00 [ 1.521879][ T0] RSP: 0000:ffffffff89a07e20 EFLAGS: 00010246 [ 1.521879][ T0] RAX: dffffc0000000000 RBX: ffffffff89a99dc0 RCX: 1ffff110436f4c28 [ 1.521879][ T0] RDX: 1ffffffff1353641 RSI: ffffffff83b2f532 RDI: ffffffff89a9b208 [ 1.521879][ T0] RBP: ffff88821b7a6000 R08: 0000000000000001 R09: ffff8880a9c06b6f [ 1.521879][ T0] R10: 0000000000000000 R11: ffffffff810000d4 R12: ffffffff8abb6bb4 [ 1.521879][ T0] R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff8abb6bd0 [ 1.521879][ T0] ? secondary_startup_64+0xa4/0xb0 [ 1.521879][ T0] ? idr_alloc+0xe2/0x130 [ 1.521879][ T0] ? lockdep_init_map_waits+0x26a/0x8a0 [ 1.521879][ T0] ? __offline_pages+0xfb0/0xfb0 [ 1.521879][ T0] cgroup_init_subsys+0x215/0x4d7 [ 1.521879][ T0] cgroup_init+0x359/0xa63 [ 1.521879][ T0] ? trace_init_perf_perm_irq_work_exit+0xe/0xe [ 1.521879][ T0] start_kernel+0x426/0x46a [ 1.521879][ T0] secondary_startup_64+0xa4/0xb0 [ 1.521879][ T0] Rebooting in 86400 seconds..