[ 0.000000][ T0] Linux version 5.8.0-syzkaller (syzkaller@syzkaller) (clang version 11.0.0 (https://github.com/llvm/llvm-project.git ca2dcbd030eadbf0aa9b660efe864ff08af6e18b), 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,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 [ 0.000002][ T0] kvm-clock: cpu 0, msr 92ba001, primary cpu clock [ 0.000003][ T0] kvm-clock: using sched offset of 3189565673 cycles [ 0.001807][ T0] clocksource: kvm-clock: mask: 0xffffffffffffffff max_cycles: 0x1cd42e4dffb, max_idle_ns: 881590591483 ns [ 0.006110][ T0] tsc: Detected 2300.000 MHz processor [ 0.008837][ T0] last_pfn = 0x220000 max_arch_pfn = 0x400000000 [ 0.010509][ T0] x86/PAT: Configuration [0-7]: WB WC UC- UC WB WP UC- WT [ 0.012101][ T0] last_pfn = 0xbfffd max_arch_pfn = 0x400000000 [ 0.019117][ T0] found SMP MP-table at [mem 0x000f2370-0x000f237f] [ 0.020731][ T0] check: Scanning 1 areas for low memory corruption [ 0.023044][ T0] Using GB pages for direct mapping [ 0.025784][ T0] ACPI: Early table checksum verification disabled [ 0.027599][ T0] ACPI: RSDP 0x00000000000F20F0 000014 (v00 Google) [ 0.029598][ T0] ACPI: RSDT 0x00000000BFFFFFC0 000038 (v01 Google GOOGRSDT 00000001 GOOG 00000001) [ 0.031764][ T0] ACPI: FACP 0x00000000BFFFF380 0000F4 (v02 Google GOOGFACP 00000001 GOOG 00000001) [ 0.034154][ T0] ACPI: DSDT 0x00000000BFFFDAC0 0018BA (v01 Google GOOGDSDT 00000001 GOOG 00000001) [ 0.040436][ T0] ACPI: FACS 0x00000000BFFFDA80 000040 [ 0.042285][ T0] ACPI: FACS 0x00000000BFFFDA80 000040 [ 0.044165][ T0] ACPI: SRAT 0x00000000BFFFFEB0 0000C8 (v03 Google GOOGSRAT 00000001 GOOG 00000001) [ 0.045738][ T0] ACPI: APIC 0x00000000BFFFFE00 000076 (v05 Google GOOGAPIC 00000001 GOOG 00000001) [ 0.047084][ T0] ACPI: SSDT 0x00000000BFFFF480 000980 (v01 Google GOOGSSDT 00000001 GOOG 00000001) [ 0.048568][ T0] ACPI: WAET 0x00000000BFFFFE80 000028 (v01 Google GOOGWAET 00000001 GOOG 00000001) [ 0.050725][ T0] SRAT: PXM 0 -> APIC 0x00 -> Node 0 [ 0.051762][ T0] SRAT: PXM 0 -> APIC 0x01 -> Node 0 [ 0.052809][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x00000000-0x0009ffff] [ 0.054595][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x00100000-0xbfffffff] [ 0.056213][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x100000000-0x21fffffff] [ 0.058393][ T0] NUMA: Node 0 [mem 0x00000000-0x0009ffff] + [mem 0x00100000-0xbfffffff] -> [mem 0x00000000-0xbfffffff] [ 0.059926][ T0] NUMA: Node 0 [mem 0x00000000-0xbfffffff] + [mem 0x100000000-0x21fffffff] -> [mem 0x00000000-0x21fffffff] [ 0.062542][ T0] Faking node 0 at [mem 0x0000000000000000-0x000000012fffffff] (4864MB) [ 0.063901][ T0] Faking node 1 at [mem 0x0000000130000000-0x000000021fffffff] (3840MB) [ 0.066028][ T0] NODE_DATA(0) allocated [mem 0x12fffb000-0x12fffffff] [ 0.068188][ T0] NODE_DATA(1) allocated [mem 0x21fff8000-0x21fffcfff] [ 0.069194][ T0] Zone ranges: [ 0.069669][ T0] DMA [mem 0x0000000000001000-0x0000000000ffffff] [ 0.070858][ T0] DMA32 [mem 0x0000000001000000-0x00000000ffffffff] [ 0.073363][ T0] Normal [mem 0x0000000100000000-0x000000021fffffff] [ 0.075662][ T0] Device empty [ 0.076825][ T0] Movable zone start for each node [ 0.077849][ T0] Early memory node ranges [ 0.079057][ T0] node 0: [mem 0x0000000000001000-0x000000000009efff] [ 0.081012][ T0] node 0: [mem 0x0000000000100000-0x00000000bfffcfff] [ 0.083613][ T0] node 0: [mem 0x0000000100000000-0x000000012fffffff] [ 0.085348][ T0] node 1: [mem 0x0000000130000000-0x000000021fffffff] [ 0.088798][ T0] Zeroed struct page in unavailable ranges: 101 pages [ 0.088805][ T0] Initmem setup node 0 [mem 0x0000000000001000-0x000000012fffffff] [ 0.119697][ T0] Initmem setup node 1 [mem 0x0000000130000000-0x000000021fffffff] [ 0.151351][ T0] ACPI: PM-Timer IO Port: 0xb008 [ 0.152827][ T0] ACPI: LAPIC_NMI (acpi_id[0xff] dfl dfl lint[0x1]) [ 0.154646][ T0] IOAPIC[0]: apic_id 0, version 17, address 0xfec00000, GSI 0-23 [ 0.156337][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 high level) [ 0.158716][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level) [ 0.159781][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 high level) [ 0.161421][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 high level) [ 0.164046][ T0] Using ACPI (MADT) for SMP configuration information [ 0.165788][ T0] smpboot: Allowing 2 CPUs, 0 hotplug CPUs [ 0.168993][ T0] PM: hibernation: Registered nosave memory: [mem 0x00000000-0x00000fff] [ 0.171656][ T0] PM: hibernation: Registered nosave memory: [mem 0x0009f000-0x0009ffff] [ 0.174225][ T0] PM: hibernation: Registered nosave memory: [mem 0x000a0000-0x000effff] [ 0.175991][ T0] PM: hibernation: Registered nosave memory: [mem 0x000f0000-0x000fffff] [ 0.178804][ T0] PM: hibernation: Registered nosave memory: [mem 0xbfffd000-0xbfffffff] [ 0.181133][ T0] PM: hibernation: Registered nosave memory: [mem 0xc0000000-0xfffbbfff] [ 0.183511][ T0] PM: hibernation: Registered nosave memory: [mem 0xfffbc000-0xffffffff] [ 0.186498][ T0] [mem 0xc0000000-0xfffbbfff] available for PCI devices [ 0.188302][ T0] Booting paravirtualized kernel on KVM [ 0.189391][ T0] clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns [ 0.227357][ T0] setup_percpu: NR_CPUS:64 nr_cpumask_bits:64 nr_cpu_ids:2 nr_node_ids:2 [ 0.231192][ T0] percpu: Embedded 54 pages/cpu s184136 r8192 d28856 u1048576 [ 0.233278][ T0] kvm-guest: PV spinlocks enabled [ 0.234421][ T0] PV qspinlock hash table entries: 256 (order: 0, 4096 bytes, linear) [ 0.237009][ T0] Built 2 zonelists, mobility grouping on. Total pages: 1935237 [ 0.238269][ T0] Policy zone: Normal [ 0.239411][ 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 [ 0.259536][ T0] mem auto-init: stack:off, heap alloc:on, heap free:off [ 0.298894][ T0] Memory: 7528780K/7863916K available (83973K kernel code, 5642K rwdata, 22364K rodata, 2136K init, 11672K bss, 334880K reserved, 0K cma-reserved) [ 0.307702][ T0] rcu: Preemptible hierarchical RCU implementation. [ 0.309182][ T0] rcu: RCU restricting CPUs from NR_CPUS=64 to nr_cpu_ids=2. [ 0.312346][ T0] rcu: RCU debug extended QS entry/exit. [ 0.313757][ T0] All grace periods are expedited (rcu_expedited). [ 0.315067][ T0] Trampoline variant of Tasks RCU enabled. [ 0.316931][ T0] rcu: RCU calculated value of scheduler-enlistment delay is 10 jiffies. [ 0.319384][ T0] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2 [ 0.324846][ T0] NR_IRQS: 4352, nr_irqs: 440, preallocated irqs: 16 [ 0.326339][ T0] random: get_random_bytes called from start_kernel+0x2cc/0x6d0 with crng_init=0 [ 0.327567][ T0] Console: colour VGA+ 80x25 [ 0.330238][ T0] printk: console [ttyS0] enabled [ 0.330238][ T0] printk: console [ttyS0] enabled [ 0.332219][ T0] printk: bootconsole [earlyser0] disabled [ 0.332219][ T0] printk: bootconsole [earlyser0] disabled [ 0.334400][ T0] mempolicy: Enabling automatic NUMA balancing. Configure with numa_balancing= or the kernel.numa_balancing sysctl [ 0.336750][ T0] ACPI: Core revision 20200717 [ 0.337979][ T0] APIC: Switch to symmetric I/O mode setup [ 0.340209][ T0] x2apic enabled [ 0.342180][ T0] Switched APIC routing to physical x2apic. [ 0.346542][ T0] ..TIMER: vector=0x30 apic1=0 pin1=0 apic2=-1 pin2=-1 [ 0.347888][ T0] clocksource: tsc-early: mask: 0xffffffffffffffff max_cycles: 0x212735223b2, max_idle_ns: 440795277976 ns [ 0.351734][ T0] Calibrating delay loop (skipped) preset value.. 4600.00 BogoMIPS (lpj=23000000) [ 0.353542][ T0] pid_max: default: 32768 minimum: 301 [ 0.355049][ T0] LSM: Security Framework initializing [ 0.356342][ T0] LSM: security= is ignored because it is superseded by lsm= [ 0.357885][ T0] Yama: becoming mindful. [ 0.361809][ T0] TOMOYO Linux initialized [ 0.363852][ T0] AppArmor: AppArmor initialized [ 0.364717][ T0] LSM support for eBPF active [ 0.370418][ T0] Dentry cache hash table entries: 1048576 (order: 11, 8388608 bytes, vmalloc) [ 0.374000][ T0] Inode-cache hash table entries: 524288 (order: 10, 4194304 bytes, vmalloc) [ 0.376184][ T0] Mount-cache hash table entries: 16384 (order: 5, 131072 bytes, vmalloc) [ 0.378266][ T0] Mountpoint-cache hash table entries: 16384 (order: 5, 131072 bytes, vmalloc) [ 0.382531][ T0] ------------[ cut here ]------------ [ 0.384371][ T0] WARNING: CPU: 0 PID: 0 at mm/memcontrol.c:5226 mem_cgroup_css_alloc+0xc4a/0xc90 [ 0.387335][ T0] Kernel panic - not syncing: panic_on_warn set ... [ 0.389726][ T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.8.0-syzkaller #0 [ 0.391218][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 0.391729][ T0] Call Trace: [ 0.391729][ T0] dump_stack+0x10f/0x19d [ 0.391729][ T0] panic+0x207/0x64a [ 0.391729][ T0] __warn+0x209/0x240 [ 0.391729][ T0] ? mem_cgroup_css_alloc+0xc4a/0xc90 [ 0.391729][ T0] report_bug+0x2b4/0x350 [ 0.391729][ T0] handle_bug+0x4d/0x90 [ 0.391729][ T0] exc_invalid_op+0x18/0xd0 [ 0.391729][ T0] asm_exc_invalid_op+0x12/0x20 [ 0.391729][ T0] RIP: 0010:mem_cgroup_css_alloc+0xc4a/0xc90 [ 0.391729][ T0] Code: e8 9b 81 59 fb 44 89 a3 08 0a 00 00 4c 89 ff e8 8c 81 59 fb c7 83 0c 0a 00 00 02 00 00 00 e9 a5 fd ff ff 0f 0b e9 ed f3 ff ff <0f> 0b e9 72 f4 ff ff 0f 1f 44 00 00 48 c7 c7 60 5c f6 87 e8 ee 82 [ 0.391729][ T0] RSP: 0000:ffffffff87a03e20 EFLAGS: 00010246 [ 0.391729][ T0] RAX: ffffffff87a320d8 RBX: 0000000000000001 RCX: 00000000000009fd [ 0.391729][ T0] RDX: 0000ffff87a32150 RSI: fffffffffffffffd RDI: ffffffff87a32150 [ 0.391729][ T0] RBP: ffff88812b78c0f0 R08: 0000000000000000 R09: 0000ffff87a32157 [ 0.391729][ T0] R10: 0000ffffffffffff R11: ffffffff87a316c0 R12: ffffffff87a32150 [ 0.391729][ T0] R13: 0000000000000000 R14: ffff88812b78c000 R15: 0000000000000020 [ 0.391729][ T0] ? hotadd_new_pgdat+0x260/0x260 [ 0.391729][ T0] cgroup_init_subsys+0xf0/0x3dd [ 0.391729][ T0] ? blkcg_exit+0x50/0x50 [ 0.391729][ T0] cgroup_init+0x57e/0x83c [ 0.391729][ T0] ? time_init+0xc/0xc [ 0.391729][ T0] start_kernel+0x5e0/0x6d0 [ 0.391729][ T0] secondary_startup_64+0xa4/0xb0 [ 0.391729][ T0] Rebooting in 86400 seconds..