[ 0.000000][ T0] Linux version 5.8.0-rc7-syzkaller (syzkaller@syzkaller) (gcc (GCC) 10.1.0-syz 20200507, GNU ld (GNU Binutils for Debian) 2.28) #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: Supporting XSAVE feature 0x020: 'AVX-512 opmask' [ 0.000000][ T0] x86/fpu: Supporting XSAVE feature 0x040: 'AVX-512 Hi256' [ 0.000000][ T0] x86/fpu: Supporting XSAVE feature 0x080: 'AVX-512 ZMM_Hi256' [ 0.000000][ T0] x86/fpu: xstate_offset[2]: 576, xstate_sizes[2]: 256 [ 0.000000][ T0] x86/fpu: xstate_offset[5]: 1088, xstate_sizes[5]: 64 [ 0.000000][ T0] x86/fpu: xstate_offset[6]: 1152, xstate_sizes[6]: 512 [ 0.000000][ T0] x86/fpu: xstate_offset[7]: 1664, xstate_sizes[7]: 1024 [ 0.000000][ T0] x86/fpu: Enabled xstate features 0xe7, context size is 2688 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 0x0000000000100000-0x000000007ffdcfff] usable [ 0.000000][ T0] BIOS-e820: [mem 0x000000007ffdd000-0x000000007fffffff] reserved [ 0.000000][ T0] BIOS-e820: [mem 0x00000000b0000000-0x00000000bfffffff] reserved [ 0.000000][ T0] BIOS-e820: [mem 0x00000000fed1c000-0x00000000fed1ffff] reserved [ 0.000000][ T0] BIOS-e820: [mem 0x00000000feffc000-0x00000000feffffff] reserved [ 0.000000][ T0] BIOS-e820: [mem 0x00000000fffc0000-0x00000000ffffffff] reserved [ 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 2.8 present. [ 0.000000][ T0] DMI: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 [ 0.000000][ T0] Hypervisor detected: KVM [ 0.000000][ T0] kvm-clock: Using msrs 4b564d01 and 4b564d00 [ 0.000135][ T0] kvm-clock: cpu 0, msr be84001, primary cpu clock [ 0.000136][ T0] kvm-clock: using sched offset of 21146338155 cycles [ 0.040743][ T0] clocksource: kvm-clock: mask: 0xffffffffffffffff max_cycles: 0x1cd42e4dffb, max_idle_ns: 881590591483 ns [ 0.105266][ T0] tsc: Detected 2000.164 MHz processor [ 0.138504][ T0] last_pfn = 0x7ffdd max_arch_pfn = 0x400000000 [ 0.157442][ T0] x86/PAT: Configuration [0-7]: WB WC UC- UC WB WP UC- WT [ 0.187212][ T0] found SMP MP-table at [mem 0x000f5a50-0x000f5a5f] [ 0.206787][ T0] check: Scanning 1 areas for low memory corruption [ 0.245122][ T0] ACPI: Early table checksum verification disabled [ 0.275505][ T0] ACPI: RSDP 0x00000000000F5880 000014 (v00 BOCHS ) [ 0.301963][ T0] ACPI: RSDT 0x000000007FFE1F9D 000040 (v01 BOCHS BXPCRSDT 00000001 BXPC 00000001) [ 0.346726][ T0] ACPI: FACP 0x000000007FFE1860 0000F4 (v03 BOCHS BXPCFACP 00000001 BXPC 00000001) [ 0.374258][ T0] ACPI: DSDT 0x000000007FFDF040 002820 (v01 BOCHS BXPCDSDT 00000001 BXPC 00000001) [ 0.397861][ T0] ACPI: FACS 0x000000007FFDF000 000040 [ 0.416455][ T0] ACPI: APIC 0x000000007FFE1954 0000B0 (v01 BOCHS BXPCAPIC 00000001 BXPC 00000001) [ 0.461672][ T0] ACPI: HPET 0x000000007FFE1A04 000038 (v01 BOCHS BXPCHPET 00000001 BXPC 00000001) [ 0.497240][ T0] ACPI: SRAT 0x000000007FFE1A3C 000178 (v01 BOCHS BXPCSRAT 00000001 BXPC 00000001) [ 0.537539][ T0] ACPI: MCFG 0x000000007FFE1BB4 00003C (v01 BOCHS BXPCMCFG 00000001 BXPC 00000001) [ 0.584876][ T0] ACPI: SSDT 0x000000007FFE1BF0 0002CD (v01 BOCHS NVDIMM 00000001 BXPC 00000001) [ 0.636629][ T0] ACPI: NFIT 0x000000007FFE1EBD 0000E0 (v01 BOCHS BXPCNFIT 00000001 BXPC 00000001) [ 0.689862][ T0] SRAT: PXM 0 -> APIC 0x00 -> Node 0 [ 0.714039][ T0] SRAT: PXM 0 -> APIC 0x01 -> Node 0 [ 0.735943][ T0] SRAT: PXM 0 -> APIC 0x02 -> Node 0 [ 0.756322][ T0] SRAT: PXM 0 -> APIC 0x03 -> Node 0 [ 0.774249][ T0] SRAT: PXM 1 -> APIC 0x04 -> Node 1 [ 0.790965][ T0] SRAT: PXM 1 -> APIC 0x05 -> Node 1 [ 0.809579][ T0] SRAT: PXM 1 -> APIC 0x06 -> Node 1 [ 0.832347][ T0] SRAT: PXM 1 -> APIC 0x07 -> Node 1 [ 0.863081][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x00000000-0x0009ffff] [ 0.894781][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x00100000-0x3fffffff] [ 0.927608][ T0] ACPI: SRAT: Node 1 PXM 1 [mem 0x40000000-0x7fffffff] [ 0.958107][ T0] ACPI: SRAT: Node 1 PXM 1 [mem 0x100000000-0x57fffffff] hotplug [ 0.993185][ T0] NUMA: Node 0 [mem 0x00000000-0x0009ffff] + [mem 0x00100000-0x3fffffff] -> [mem 0x00000000-0x3fffffff] [ 1.033450][ T0] Faking node 0 at [mem 0x0000000000000000-0x000000003fffffff] (1024MB) [ 1.072132][ T0] Faking node 1 at [mem 0x0000000040000000-0x000000007ffdcfff] (1023MB) [ 1.119041][ T0] NODE_DATA(0) allocated [mem 0x3fffb000-0x3fffffff] [ 1.158365][ T0] NODE_DATA(1) allocated [mem 0x7ffd7000-0x7ffdbfff] [ 1.486559][ T0] Zone ranges: [ 1.505058][ T0] DMA [mem 0x0000000000001000-0x0000000000ffffff] [ 1.548423][ T0] DMA32 [mem 0x0000000001000000-0x000000007ffdcfff] [ 1.579370][ T0] Normal empty [ 1.595169][ T0] Device empty [ 1.614158][ T0] Movable zone start for each node [ 1.637700][ T0] Early memory node ranges [ 1.655422][ T0] node 0: [mem 0x0000000000001000-0x000000000009efff] [ 1.691013][ T0] node 0: [mem 0x0000000000100000-0x000000003fffffff] [ 1.729268][ T0] node 1: [mem 0x0000000040000000-0x000000007ffdcfff] [ 1.766196][ T0] Zeroed struct page in unavailable ranges: 133 pages [ 1.766245][ T0] Initmem setup node 0 [mem 0x0000000000001000-0x000000003fffffff] [ 1.857026][ T0] Initmem setup node 1 [mem 0x0000000040000000-0x000000007ffdcfff] [ 5.008795][ T0] kasan: KernelAddressSanitizer initialized [ 5.076958][ T0] ACPI: PM-Timer IO Port: 0x608 [ 5.094181][ T0] ACPI: LAPIC_NMI (acpi_id[0xff] dfl dfl lint[0x1]) [ 5.142108][ T0] IOAPIC[0]: apic_id 0, version 17, address 0xfec00000, GSI 0-23 [ 5.172593][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl) [ 5.204248][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 high level) [ 5.233018][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level) [ 5.258725][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 high level) [ 5.284474][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 high level) [ 5.308545][ T0] Using ACPI (MADT) for SMP configuration information [ 5.329684][ T0] ACPI: HPET id: 0x8086a201 base: 0xfed00000 [ 5.352791][ T0] TSC deadline timer available [ 5.371619][ T0] smpboot: Allowing 8 CPUs, 4 hotplug CPUs [ 5.391029][ T0] KVM setup pv remote TLB flush [ 5.416846][ T0] PM: hibernation: Registered nosave memory: [mem 0x00000000-0x00000fff] [ 5.436419][ T0] PM: hibernation: Registered nosave memory: [mem 0x0009f000-0x0009ffff] [ 5.455212][ T0] PM: hibernation: Registered nosave memory: [mem 0x000a0000-0x000effff] [ 5.481854][ T0] PM: hibernation: Registered nosave memory: [mem 0x000f0000-0x000fffff] [ 5.513176][ T0] [mem 0xc0000000-0xfed1bfff] available for PCI devices [ 5.537387][ T0] Booting paravirtualized kernel on KVM [ 5.554914][ T0] clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns [ 5.753662][ T0] setup_percpu: NR_CPUS:64 nr_cpumask_bits:64 nr_cpu_ids:8 nr_node_ids:2 [ 5.847991][ T0] percpu: Embedded 65 pages/cpu s226696 r8192 d31352 u1048576 [ 5.888681][ T0] KVM setup async PF for cpu 0 [ 5.906677][ T0] kvm-stealtime: cpu 0, msr 2ce20a80 [ 5.934724][ T0] PV qspinlock hash table entries: 256 (order: 0, 4096 bytes, linear) [ 5.974840][ T0] Built 2 zonelists, mobility grouping on. Total pages: 515942 [ 6.009870][ T0] Policy zone: DMA32 [ 6.028915][ 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 [ 6.308115][ T0] mem auto-init: stack:off, heap alloc:on, heap free:off [ 6.991331][ T0] Memory: 1503612K/2096620K available (116743K kernel code, 17484K rwdata, 21508K rodata, 2768K init, 24236K bss, 593008K reserved, 0K cma-reserved) [ 7.112578][ T0] Running RCU self tests [ 7.124759][ T0] rcu: Preemptible hierarchical RCU implementation. [ 7.138121][ T0] rcu: RCU lockdep checking is enabled. [ 7.151755][ T0] rcu: RCU restricting CPUs from NR_CPUS=64 to nr_cpu_ids=8. [ 7.166136][ T0] rcu: RCU callback double-/use-after-free debug enabled. [ 7.175703][ T0] rcu: RCU debug extended QS entry/exit. [ 7.183064][ T0] Trampoline variant of Tasks RCU enabled. [ 7.191543][ T0] rcu: RCU calculated value of scheduler-enlistment delay is 10 jiffies. [ 7.214000][ T0] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=8 [ 7.263008][ T0] NR_IRQS: 4352, nr_irqs: 488, preallocated irqs: 16 [ 7.311378][ T0] random: get_random_bytes called from start_kernel+0x67f/0xa06 with crng_init=0 [ 7.525908][ T0] Console: colour VGA+ 80x25 [ 7.580745][ T0] printk: console [ttyS0] enabled [ 7.580745][ T0] printk: console [ttyS0] enabled [ 7.609980][ T0] printk: bootconsole [earlyser0] disabled [ 7.609980][ T0] printk: bootconsole [earlyser0] disabled [ 7.653352][ T0] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar [ 7.679937][ T0] ... MAX_LOCKDEP_SUBCLASSES: 8 [ 7.702374][ T0] ... MAX_LOCK_DEPTH: 48 [ 7.720965][ T0] ... MAX_LOCKDEP_KEYS: 8192 [ 7.737010][ T0] ... CLASSHASH_SIZE: 4096 [ 7.758716][ T0] ... MAX_LOCKDEP_ENTRIES: 32768 [ 7.770743][ T0] ... MAX_LOCKDEP_CHAINS: 65536 [ 7.784658][ T0] ... CHAINHASH_SIZE: 32768 [ 7.799265][ T0] memory used by lock dependency info: 6301 kB [ 7.821683][ T0] memory used for stack traces: 4224 kB [ 7.841118][ T0] per task-struct memory footprint: 1920 bytes [ 7.864169][ T0] mempolicy: Enabling automatic NUMA balancing. Configure with numa_balancing= or the kernel.numa_balancing sysctl [ 7.903775][ T0] ACPI: Core revision 20200528 [ 7.936133][ T0] clocksource: hpet: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604467 ns [ 7.993956][ T0] APIC: Switch to symmetric I/O mode setup [ 8.023666][ T0] x2apic enabled [ 8.045269][ T0] Switched APIC routing to physical x2apic. [ 8.064678][ T0] KVM setup pv IPIs [ 8.126273][ T0] ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1 [ 8.154780][ T0] clocksource: tsc-early: mask: 0xffffffffffffffff max_cycles: 0x1cd4c92266a, max_idle_ns: 440795223404 ns [ 8.222324][ T0] Calibrating delay loop (skipped) preset value.. 4000.32 BogoMIPS (lpj=20001640) [ 8.230253][ T0] pid_max: default: 32768 minimum: 301 [ 8.260933][ T0] LSM: Security Framework initializing [ 8.270654][ T0] LSM: security= is ignored because it is superseded by lsm= [ 8.281272][ T0] Yama: becoming mindful. [ 8.306640][ T0] TOMOYO Linux initialized [ 8.326362][ T0] AppArmor: AppArmor initialized [ 8.361827][ T0] Dentry cache hash table entries: 262144 (order: 9, 2097152 bytes, vmalloc) [ 8.384622][ T0] Inode-cache hash table entries: 131072 (order: 8, 1048576 bytes, vmalloc) [ 8.391943][ T0] Mount-cache hash table entries: 4096 (order: 3, 32768 bytes, vmalloc) [ 8.400563][ T0] Mountpoint-cache hash table entries: 4096 (order: 3, 32768 bytes, vmalloc) [ 8.583147][ T0] x86/cpu: User Mode Instruction Prevention (UMIP) activated [ 8.618798][ T0] Last level iTLB entries: 4KB 0, 2MB 0, 4MB 0 [ 8.620177][ T0] Last level dTLB entries: 4KB 0, 2MB 0, 4MB 0, 1GB 0 [ 8.632221][ T0] Spectre V1 : Mitigation: usercopy/swapgs barriers and __user pointer sanitization [ 8.640629][ T0] Spectre V2 : Spectre mitigation: kernel not compiled with retpoline; no mitigation available! [ 8.641129][ T0] Speculative Store Bypass: Mitigation: Speculative Store Bypass disabled via prctl [ 8.661161][ T0] TAA: Mitigation: Clear CPU buffers [ 8.670122][ T0] MDS: Mitigation: Clear CPU buffers [ 8.758732][ T0] Freeing SMP alternatives memory: 104K [ 8.965877][ T1] smpboot: CPU0: Intel(R) Xeon(R) CPU @ 2.00GHz (family: 0x6, model: 0x55, stepping: 0x3) [ 8.997358][ T1] Performance Events: unsupported p6 CPU model 85 no PMU driver, software events only. [ 9.009904][ T1] rcu: Hierarchical SRCU implementation. [ 9.020105][ T1] dynamic_debug:dynamic_debug_init: Ignore empty _ddebug table in a CONFIG_DYNAMIC_DEBUG_CORE build [ 9.044452][ T1] NMI watchdog: Perf NMI watchdog permanently disabled [ 9.074759][ T1] smp: Bringing up secondary CPUs ... [ 9.100105][ T1] x86: Booting SMP configuration: [ 9.101455][ T1] .... node #0, CPUs: #1 [ 0.826040][ T0] kvm-clock: cpu 1, msr be84041, secondary cpu clock [ 9.153414][ T15] KVM setup async PF for cpu 1 [ 9.160105][ T15] kvm-stealtime: cpu 1, msr 2cf20a80 [ 9.173547][ T1] MDS CPU bug present and SMT on, data leak possible. See https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/mds.html for more details. [ 9.182590][ T1] TAA CPU bug present and SMT on, data leak possible. See https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/tsx_async_abort.html for more details. [ 9.200486][ T1] #2 [ 0.826040][ T0] kvm-clock: cpu 2, msr be84081, secondary cpu clock [ 9.243440][ T20] KVM setup async PF for cpu 2 [ 9.250105][ T20] kvm-stealtime: cpu 2, msr 2d020a80 [ 9.310433][ T1] #3 [ 0.826040][ T0] kvm-clock: cpu 3, msr be840c1, secondary cpu clock [ 9.351148][ T25] KVM setup async PF for cpu 3 [ 9.360105][ T25] kvm-stealtime: cpu 3, msr 2d120a80 [ 9.370880][ T1] smp: Brought up 2 nodes, 4 CPUs [ 9.380289][ T1] smpboot: Max logical packages: 2 [ 9.390374][ T1] smpboot: Total of 4 processors activated (16001.31 BogoMIPS) [ 9.545061][ T1] devtmpfs: initialized [ 9.590105][ T1] x86/mm: Memory block size: 128MB [ 9.890105][ T33] kworker/u17:0 (33) used greatest stack depth: 27448 bytes left [ 118.704531][ T1] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 2-... } 10886 jiffies s: 25 root: 0x4/. [ 118.770640][ T1] rcu: blocking rcu_node structures: [ 118.810521][ T1] Task dump for CPU 2: [ 118.831578][ T1] swapper/0 R running task 28272 1 0 0x00004000 [ 118.872247][ T1] Call Trace: [ 118.906021][ T1] sched_show_task.cold+0x2da/0x33e [ 118.931273][ T1] ? cpu_cgroup_can_attach+0x110/0x110 [ 118.962164][ T1] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 118.990882][ T1] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 119.030866][ T1] rcu_exp_wait_wake.cold+0x4a0/0x7ef [ 119.070461][ T1] ? rcu_core_si+0x10/0x10 [ 119.090202][ T1] ? sync_rcu_exp_select_cpus+0x33a/0x720 [ 119.120302][ T1] synchronize_rcu_expedited+0x502/0x5f0 [ 119.150343][ T1] ? rcu_exp_wait_wake+0x520/0x520 [ 119.190732][ T1] ? lock_acquire+0x1f1/0xad0 [ 119.230883][ T1] ? __alloc_pages_nodemask+0x3b1/0x930 [ 119.280500][ T1] ? find_held_lock+0x2d/0x110 [ 119.310220][ T1] ? lock_downgrade+0x820/0x820 [ 119.340426][ T1] ? __zone_watermark_ok+0x370/0x370 [ 119.380387][ T1] ? lock_is_held_type+0xb0/0xe0 [ 119.420553][ T1] ? lock_is_held_type+0xb0/0xe0 [ 119.460683][ T1] ? initcall_blacklisted+0x124/0x190 [ 119.510604][ T1] ? __bpf_trace_initcall_finish+0x100/0x100 [ 119.560511][ T1] ? rcu_read_lock_sched_held+0x3a/0xb0 [ 119.610452][ T1] ? __alloc_pages_nodemask+0x6b1/0x930 [ 119.650436][ T1] ? lock_is_held_type+0xb0/0xe0 [ 119.692005][ T1] ? irq_alloc_matrix+0x191/0x191 [ 119.730575][ T1] synchronize_rcu+0xdf/0x180 [ 119.760255][ T1] ? synchronize_rcu_expedited+0x5f0/0x5f0 [ 119.800673][ T1] ? __inc_numa_state+0x44/0xe0 [ 119.830460][ T1] ? alloc_page_interleave+0x88/0x1b0 [ 119.860320][ T1] ? lock_is_held_type+0xb0/0xe0 [ 119.890331][ T1] ? irq_alloc_matrix+0x191/0x191 [ 119.930377][ T1] rcu_set_runtime_mode+0x5/0x5a [ 119.960465][ T1] do_one_initcall+0x10a/0x7b0 [ 120.000355][ T1] ? perf_trace_initcall_level+0x3d0/0x3d0 [ 120.051028][ T1] ? parameq+0x150/0x170 [ 120.090467][ T1] ? kernel_init_freeable+0x398/0x5a3 [ 120.130791][ T1] ? rcu_read_lock_sched_held+0x3a/0xb0 [ 120.180348][ T1] ? lock_is_held_type+0xb0/0xe0 [ 120.210341][ T1] kernel_init_freeable+0x4f4/0x5a3 [ 120.250390][ T1] ? rest_init+0x360/0x360 [ 120.270367][ T1] kernel_init+0xd/0x1c0 [ 120.300423][ T1] ret_from_fork+0x1f/0x30 [ 436.140105][ T1] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 2-... } 42631 jiffies s: 25 root: 0x4/. [ 436.242676][ T1] rcu: blocking rcu_node structures: [ 436.281285][ T1] Task dump for CPU 2: [ 436.313477][ T1] swapper/0 R running task 28272 1 0 0x00004000 [ 436.374828][ T1] Call Trace: [ 436.410105][ T1] sched_show_task.cold+0x2da/0x33e [ 436.441149][ T1] ? cpu_cgroup_can_attach+0x110/0x110 [ 436.473688][ T1] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 436.500873][ T1] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 436.520238][ T1] rcu_exp_wait_wake.cold+0x4a0/0x7ef [ 436.540390][ T1] ? rcu_core_si+0x10/0x10 [ 436.560375][ T1] ? sync_rcu_exp_select_cpus+0x33a/0x720 [ 436.590332][ T1] synchronize_rcu_expedited+0x502/0x5f0 [ 436.610247][ T1] ? rcu_exp_wait_wake+0x520/0x520 [ 436.640459][ T1] ? lock_acquire+0x1f1/0xad0 [ 436.660573][ T1] ? __alloc_pages_nodemask+0x3b1/0x930 [ 436.690232][ T1] ? find_held_lock+0x2d/0x110 [ 436.720391][ T1] ? lock_downgrade+0x820/0x820 [ 436.750371][ T1] ? __zone_watermark_ok+0x370/0x370 [ 436.770298][ T1] ? lock_is_held_type+0xb0/0xe0 [ 436.800187][ T1] ? lock_is_held_type+0xb0/0xe0 [ 436.820503][ T1] ? initcall_blacklisted+0x124/0x190 [ 436.850394][ T1] ? __bpf_trace_initcall_finish+0x100/0x100 [ 436.890362][ T1] ? rcu_read_lock_sched_held+0x3a/0xb0 [ 436.920374][ T1] ? __alloc_pages_nodemask+0x6b1/0x930 [ 436.950606][ T1] ? lock_is_held_type+0xb0/0xe0 [ 436.991643][ T1] ? irq_alloc_matrix+0x191/0x191 [ 437.020628][ T1] synchronize_rcu+0xdf/0x180 [ 437.060521][ T1] ? synchronize_rcu_expedited+0x5f0/0x5f0 [ 437.090374][ T1] ? __inc_numa_state+0x44/0xe0 [ 437.110489][ T1] ? alloc_page_interleave+0x88/0x1b0 [ 437.140456][ T1] ? lock_is_held_type+0xb0/0xe0 [ 437.160383][ T1] ? irq_alloc_matrix+0x191/0x191 [ 437.200532][ T1] rcu_set_runtime_mode+0x5/0x5a [ 437.222500][ T1] do_one_initcall+0x10a/0x7b0 [ 437.250678][ T1] ? perf_trace_initcall_level+0x3d0/0x3d0 [ 437.290474][ T1] ? parameq+0x150/0x170 [ 437.310367][ T1] ? kernel_init_freeable+0x398/0x5a3 [ 437.340275][ T1] ? rcu_read_lock_sched_held+0x3a/0xb0 [ 437.370509][ T1] ? lock_is_held_type+0xb0/0xe0 [ 437.410724][ T1] kernel_init_freeable+0x4f4/0x5a3 [ 437.450379][ T1] ? rest_init+0x360/0x360 [ 437.480371][ T1] kernel_init+0xd/0x1c0 [ 437.510442][ T1] ret_from_fork+0x1f/0x30