[ 0.000000][ T0] Linux version 5.9.0-rc1-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=selinux lsm=lockdown,yama,safesetid,integrity,selinux,tomoyo,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: 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 [ 0.000053][ T0] kvm-clock: cpu 0, msr becf001, primary cpu clock [ 0.000053][ T0] kvm-clock: using sched offset of 24788636134 cycles [ 0.025636][ T0] clocksource: kvm-clock: mask: 0xffffffffffffffff max_cycles: 0x1cd42e4dffb, max_idle_ns: 881590591483 ns [ 0.096314][ T0] tsc: Detected 2000.164 MHz processor [ 0.143774][ T0] last_pfn = 0x7ffdd max_arch_pfn = 0x400000000 [ 0.197856][ T0] x86/PAT: Configuration [0-7]: WB WC UC- UC WB WP UC- WT [ 0.255134][ T0] found SMP MP-table at [mem 0x000f5a40-0x000f5a4f] [ 0.300791][ T0] check: Scanning 1 areas for low memory corruption [ 0.354713][ T0] ACPI: Early table checksum verification disabled [ 0.392461][ T0] ACPI: RSDP 0x00000000000F5870 000014 (v00 BOCHS ) [ 0.424984][ T0] ACPI: RSDT 0x000000007FFE1F9D 000040 (v01 BOCHS BXPCRSDT 00000001 BXPC 00000001) [ 0.468218][ T0] ACPI: FACP 0x000000007FFE1860 0000F4 (v03 BOCHS BXPCFACP 00000001 BXPC 00000001) [ 0.510938][ T0] ACPI: DSDT 0x000000007FFDF040 002820 (v01 BOCHS BXPCDSDT 00000001 BXPC 00000001) [ 0.556173][ T0] ACPI: FACS 0x000000007FFDF000 000040 [ 0.584811][ T0] ACPI: APIC 0x000000007FFE1954 0000B0 (v01 BOCHS BXPCAPIC 00000001 BXPC 00000001) [ 0.635877][ T0] ACPI: HPET 0x000000007FFE1A04 000038 (v01 BOCHS BXPCHPET 00000001 BXPC 00000001) [ 0.683137][ T0] ACPI: SRAT 0x000000007FFE1A3C 000178 (v01 BOCHS BXPCSRAT 00000001 BXPC 00000001) [ 0.734774][ T0] ACPI: MCFG 0x000000007FFE1BB4 00003C (v01 BOCHS BXPCMCFG 00000001 BXPC 00000001) [ 0.793143][ T0] ACPI: SSDT 0x000000007FFE1BF0 0002CD (v01 BOCHS NVDIMM 00000001 BXPC 00000001) [ 0.844461][ T0] ACPI: NFIT 0x000000007FFE1EBD 0000E0 (v01 BOCHS BXPCNFIT 00000001 BXPC 00000001) [ 0.907501][ T0] SRAT: PXM 0 -> APIC 0x00 -> Node 0 [ 0.938948][ T0] SRAT: PXM 0 -> APIC 0x01 -> Node 0 [ 0.971466][ T0] SRAT: PXM 0 -> APIC 0x02 -> Node 0 [ 1.006100][ T0] SRAT: PXM 0 -> APIC 0x03 -> Node 0 [ 1.035977][ T0] SRAT: PXM 1 -> APIC 0x04 -> Node 1 [ 1.066461][ T0] SRAT: PXM 1 -> APIC 0x05 -> Node 1 [ 1.099152][ T0] SRAT: PXM 1 -> APIC 0x06 -> Node 1 [ 1.127568][ T0] SRAT: PXM 1 -> APIC 0x07 -> Node 1 [ 1.161586][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x00000000-0x0009ffff] [ 1.210841][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x00100000-0x3fffffff] [ 1.259452][ T0] ACPI: SRAT: Node 1 PXM 1 [mem 0x40000000-0x7fffffff] [ 1.307184][ T0] ACPI: SRAT: Node 1 PXM 1 [mem 0x100000000-0x57fffffff] hotplug [ 1.351207][ T0] NUMA: Node 0 [mem 0x00000000-0x0009ffff] + [mem 0x00100000-0x3fffffff] -> [mem 0x00000000-0x3fffffff] [ 1.413346][ T0] Faking node 0 at [mem 0x0000000000000000-0x000000003fffffff] (1024MB) [ 1.458299][ T0] Faking node 1 at [mem 0x0000000040000000-0x000000007ffdcfff] (1023MB) [ 1.494340][ T0] NODE_DATA(0) allocated [mem 0x3fffb000-0x3fffffff] [ 1.531239][ T0] NODE_DATA(1) allocated [mem 0x7ffd7000-0x7ffdbfff] [ 1.723764][ T0] Zone ranges: [ 1.741240][ T0] DMA [mem 0x0000000000001000-0x0000000000ffffff] [ 1.771711][ T0] DMA32 [mem 0x0000000001000000-0x000000007ffdcfff] [ 1.803132][ T0] Normal empty [ 1.816412][ T0] Device empty [ 1.826275][ T0] Movable zone start for each node [ 1.839566][ T0] Early memory node ranges [ 1.859263][ T0] node 0: [mem 0x0000000000001000-0x000000000009efff] [ 1.888662][ T0] node 0: [mem 0x0000000000100000-0x000000003fffffff] [ 1.933035][ T0] node 1: [mem 0x0000000040000000-0x000000007ffdcfff] [ 1.979297][ T0] Zeroed struct page in unavailable ranges: 133 pages [ 1.979331][ T0] Initmem setup node 0 [mem 0x0000000000001000-0x000000003fffffff] [ 2.093765][ T0] Initmem setup node 1 [mem 0x0000000040000000-0x000000007ffdcfff] [ 5.751165][ T0] kasan: KernelAddressSanitizer initialized [ 5.805625][ T0] ACPI: PM-Timer IO Port: 0x608 [ 5.821519][ T0] ACPI: LAPIC_NMI (acpi_id[0xff] dfl dfl lint[0x1]) [ 5.852767][ T0] IOAPIC[0]: apic_id 0, version 17, address 0xfec00000, GSI 0-23 [ 5.880158][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl) [ 5.922168][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 high level) [ 5.960172][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level) [ 6.002228][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 high level) [ 6.041152][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 high level) [ 6.079136][ T0] Using ACPI (MADT) for SMP configuration information [ 6.110690][ T0] ACPI: HPET id: 0x8086a201 base: 0xfed00000 [ 6.143155][ T0] TSC deadline timer available [ 6.166306][ T0] smpboot: Allowing 8 CPUs, 4 hotplug CPUs [ 6.236374][ T0] kvm-guest: KVM setup pv remote TLB flush [ 6.306876][ T0] PM: hibernation: Registered nosave memory: [mem 0x00000000-0x00000fff] [ 6.352329][ T0] PM: hibernation: Registered nosave memory: [mem 0x0009f000-0x0009ffff] [ 6.383968][ T0] PM: hibernation: Registered nosave memory: [mem 0x000a0000-0x000effff] [ 6.422274][ T0] PM: hibernation: Registered nosave memory: [mem 0x000f0000-0x000fffff] [ 6.457488][ T0] [mem 0xc0000000-0xfed1bfff] available for PCI devices [ 6.491034][ T0] Booting paravirtualized kernel on KVM [ 6.531421][ T0] clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns [ 6.637365][ T0] setup_percpu: NR_CPUS:64 nr_cpumask_bits:64 nr_cpu_ids:8 nr_node_ids:2 [ 6.734435][ T0] percpu: Embedded 65 pages/cpu s226696 r8192 d31352 u1048576 [ 6.772320][ T0] kvm-guest: stealtime: cpu 0, msr 2ce20a40 [ 6.796961][ T0] kvm-guest: PV spinlocks enabled [ 6.817563][ T0] PV qspinlock hash table entries: 256 (order: 0, 4096 bytes, linear) [ 6.876390][ T0] Built 2 zonelists, mobility grouping on. Total pages: 515942 [ 6.935548][ T0] Policy zone: DMA32 [ 6.960835][ 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=selinux lsm=lockdown,yama,safesetid,integrity,selinux,tomoyo,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 [ 7.589975][ T0] mem auto-init: stack:off, heap alloc:on, heap free:off [ 8.871506][ T0] Memory: 1503356K/2096620K available (116743K kernel code, 17674K rwdata, 21636K rodata, 2792K init, 23936K bss, 593008K reserved, 0K cma-reserved) [ 9.065906][ T0] Running RCU self tests [ 9.085294][ T0] rcu: Preemptible hierarchical RCU implementation. [ 9.109901][ T0] rcu: RCU lockdep checking is enabled. [ 9.133729][ T0] rcu: RCU restricting CPUs from NR_CPUS=64 to nr_cpu_ids=8. [ 9.171405][ T0] rcu: RCU callback double-/use-after-free debug enabled. [ 9.199108][ T0] rcu: RCU debug extended QS entry/exit. [ 9.227929][ T0] All grace periods are expedited (rcu_expedited). [ 9.266187][ T0] Trampoline variant of Tasks RCU enabled. [ 9.297732][ T0] rcu: RCU calculated value of scheduler-enlistment delay is 10 jiffies. [ 9.343545][ T0] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=8 [ 9.405636][ T0] NR_IRQS: 4352, nr_irqs: 488, preallocated irqs: 16 [ 9.488727][ T0] random: get_random_bytes called from start_kernel+0x23b/0x46a with crng_init=0 [ 9.910577][ T0] Console: colour VGA+ 80x25 [ 9.973244][ T0] printk: console [ttyS0] enabled [ 9.973244][ T0] printk: console [ttyS0] enabled [ 10.012135][ T0] printk: bootconsole [earlyser0] disabled [ 10.012135][ T0] printk: bootconsole [earlyser0] disabled [ 10.059206][ T0] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar [ 10.099167][ T0] ... MAX_LOCKDEP_SUBCLASSES: 8 [ 10.123297][ T0] ... MAX_LOCK_DEPTH: 48 [ 10.149704][ T0] ... MAX_LOCKDEP_KEYS: 8192 [ 10.177726][ T0] ... CLASSHASH_SIZE: 4096 [ 10.207217][ T0] ... MAX_LOCKDEP_ENTRIES: 32768 [ 10.235110][ T0] ... MAX_LOCKDEP_CHAINS: 65536 [ 10.260093][ T0] ... CHAINHASH_SIZE: 32768 [ 10.287662][ T0] memory used by lock dependency info: 6301 kB [ 10.317695][ T0] memory used for stack traces: 4224 kB [ 10.347373][ T0] per task-struct memory footprint: 1920 bytes [ 10.390607][ T0] mempolicy: Enabling automatic NUMA balancing. Configure with numa_balancing= or the kernel.numa_balancing sysctl [ 10.448376][ T0] ACPI: Core revision 20200717 [ 10.533802][ T0] clocksource: hpet: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604467 ns [ 10.638261][ T0] APIC: Switch to symmetric I/O mode setup [ 10.694337][ T0] x2apic enabled [ 10.728522][ T0] Switched APIC routing to physical x2apic. [ 10.759073][ T0] kvm-guest: setup PV IPIs [ 10.905989][ T0] ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1 [ 10.940537][ T0] clocksource: tsc-early: mask: 0xffffffffffffffff max_cycles: 0x1cd4c92266a, max_idle_ns: 440795223404 ns [ 11.023041][ T0] Calibrating delay loop (skipped) preset value.. 4000.32 BogoMIPS (lpj=20001640) [ 11.031846][ T0] pid_max: default: 32768 minimum: 301 [ 11.056695][ T0] LSM: Security Framework initializing [ 11.060484][ T0] LSM: security= is ignored because it is superseded by lsm= [ 11.071957][ T0] Yama: becoming mindful. [ 11.085692][ T0] SELinux: Initializing. [ 11.097161][ T0] TOMOYO Linux initialized [ 11.110219][ T0] LSM support for eBPF active [ 11.162037][ T0] Dentry cache hash table entries: 262144 (order: 9, 2097152 bytes, vmalloc) [ 11.190623][ T0] Inode-cache hash table entries: 131072 (order: 8, 1048576 bytes, vmalloc) [ 11.210998][ T0] Mount-cache hash table entries: 4096 (order: 3, 32768 bytes, vmalloc) [ 11.220882][ T0] Mountpoint-cache hash table entries: 4096 (order: 3, 32768 bytes, vmalloc) [ 11.399155][ T0] x86/cpu: User Mode Instruction Prevention (UMIP) activated [ 11.450291][ T0] Last level iTLB entries: 4KB 0, 2MB 0, 4MB 0 [ 11.460109][ T0] Last level dTLB entries: 4KB 0, 2MB 0, 4MB 0, 1GB 0 [ 11.472362][ T0] Spectre V1 : Mitigation: usercopy/swapgs barriers and __user pointer sanitization [ 11.481134][ T0] Spectre V2 : Spectre mitigation: kernel not compiled with retpoline; no mitigation available! [ 11.481886][ T0] Speculative Store Bypass: Mitigation: Speculative Store Bypass disabled via prctl [ 11.510578][ T0] TAA: Mitigation: Clear CPU buffers [ 11.534896][ T0] MDS: Mitigation: Clear CPU buffers [ 11.682332][ T0] Freeing SMP alternatives memory: 104K [ 12.200094][ T1] smpboot: CPU0: Intel(R) Xeon(R) CPU @ 2.00GHz (family: 0x6, model: 0x55, stepping: 0x3) [ 12.262841][ T1] Performance Events: unsupported p6 CPU model 85 no PMU driver, software events only. [ 12.283641][ T1] rcu: Hierarchical SRCU implementation. [ 12.315268][ T1] dyndbg: Ignore empty _ddebug table in a CONFIG_DYNAMIC_DEBUG_CORE build [ 12.330964][ T1] NMI watchdog: Perf NMI watchdog permanently disabled [ 12.371007][ T1] smp: Bringing up secondary CPUs ... [ 12.430094][ T1] x86: Booting SMP configuration: [ 12.441006][ T1] .... node #0, CPUs: #1 [ 1.430596][ T0] kvm-clock: cpu 1, msr becf041, secondary cpu clock [ 12.628868][ T15] kvm-guest: stealtime: cpu 1, msr 2cf20a40 [ 12.703158][ 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. [ 12.711346][ 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. [ 12.756577][ T1] #2 [ 1.430596][ T0] kvm-clock: cpu 2, msr becf081, secondary cpu clock [ 12.876382][ T20] kvm-guest: stealtime: cpu 2, msr 2d020a40 [ 12.950472][ T1] #3 [ 1.430596][ T0] kvm-clock: cpu 3, msr becf0c1, secondary cpu clock [ 13.082002][ T25] kvm-guest: stealtime: cpu 3, msr 2d120a40 [ 13.131943][ T1] smp: Brought up 2 nodes, 4 CPUs [ 13.140574][ T1] smpboot: Max logical packages: 2 [ 13.150457][ T1] smpboot: Total of 4 processors activated (16001.31 BogoMIPS) [ 13.283872][ T1] devtmpfs: initialized [ 13.346402][ T1] x86/mm: Memory block size: 128MB [ 13.592775][ T1] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns [ 13.656164][ T33] kworker/u17:0 (33) used greatest stack depth: 27544 bytes left [ 13.669180][ T1] futex hash table entries: 2048 (order: 6, 262144 bytes, vmalloc) [ 13.730091][ T1] xor: automatically using best checksumming function avx [ 13.792456][ T1] PM: RTC time: 02:09:50, date: 2020-08-18 [ 13.885393][ T1] NET: Registered protocol family 16 [ 13.950094][ T1] audit: initializing netlink subsys (disabled) [ 13.992049][ T40] audit: type=2000 audit(1597716588.205:1): state=initialized audit_enabled=0 res=1 [ 14.000094][ T1] thermal_sys: Registered thermal governor 'step_wise' [ 14.000094][ T1] thermal_sys: Registered thermal governor 'user_space' [ 14.024113][ T1] cpuidle: using governor menu [ 14.043118][ T1] NET: Registered protocol family 42 [ 14.077606][ T1] ACPI: bus type PCI registered [ 14.090892][ T1] dca service started, version 1.12.1 [ 14.107296][ T1] PCI: MMCONFIG for domain 0000 [bus 00-ff] at [mem 0xb0000000-0xbfffffff] (base 0xb0000000) [ 14.110912][ T1] PCI: MMCONFIG at [mem 0xb0000000-0xbfffffff] reserved in E820 [ 14.538520][ T1] PCI: Using configuration type 1 for base access [ 14.982236][ T1] HugeTLB registered 2.00 MiB page size, pre-allocated 0 pages [ 15.041436][ T1] cryptd: max_cpu_qlen set to 1000 [ 15.280716][ T1] raid6: avx512x4 gen() 13714 MB/s [ 15.478391][ T1] raid6: avx512x4 xor() 6098 MB/s [ 15.654755][ T1] raid6: avx512x2 gen() 12365 MB/s [ 15.838774][ T1] raid6: avx512x2 xor() 5428 MB/s [ 16.020111][ T1] raid6: avx512x1 gen() 7342 MB/s [ 16.200922][ T1] raid6: avx512x1 xor() 2921 MB/s [ 16.384512][ T1] raid6: avx2x4 gen() 9795 MB/s [ 16.585427][ T1] raid6: avx2x4 xor() 4543 MB/s [ 16.762733][ T1] raid6: avx2x2 gen() 6019 MB/s [ 16.960120][ T1] raid6: avx2x2 xor() 2771 MB/s [ 17.153996][ T1] raid6: avx2x1 gen() 3769 MB/s [ 17.354976][ T1] raid6: avx2x1 xor() 1487 MB/s [ 17.551066][ T1] raid6: sse2x4 gen() 4530 MB/s [ 17.747347][ T1] raid6: sse2x4 xor() 1985 MB/s [ 17.945750][ T1] raid6: sse2x2 gen() 3005 MB/s [ 18.133626][ T1] raid6: sse2x2 xor() 1324 MB/s [ 18.329156][ T1] raid6: sse2x1 gen() 1963 MB/s [ 18.501696][ T1] raid6: sse2x1 xor() 746 MB/s [ 18.530305][ T1] raid6: using algorithm avx512x4 gen() 13714 MB/s [ 18.570296][ T1] raid6: .... xor() 6098 MB/s, rmw enabled [ 18.612759][ T1] raid6: using avx512x2 recovery algorithm [ 18.720680][ T1] ACPI: Added _OSI(Module Device) [ 18.760883][ T1] ACPI: Added _OSI(Processor Device) [ 18.800542][ T1] ACPI: Added _OSI(3.0 _SCP Extensions) [ 18.840268][ T1] ACPI: Added _OSI(Processor Aggregator Device) [ 18.870726][ T1] ACPI: Added _OSI(Linux-Dell-Video) [ 18.900997][ T1] ACPI: Added _OSI(Linux-Lenovo-NV-HDMI-Audio) [ 18.950464][ T1] ACPI: Added _OSI(Linux-HPI-Hybrid-Graphics) [ 19.106821][ T1] ACPI: 2 ACPI AML tables successfully acquired and loaded [ 19.404616][ T1] ACPI: Interpreter enabled [ 19.425183][ T1] ACPI: (supports S0 S3 S4 S5) [ 19.431570][ T1] ACPI: Using IOAPIC for interrupt routing [ 19.447799][ T1] PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug [ 19.457669][ T1] ACPI: Enabled 3 GPEs in block 00 to 3F [ 19.776558][ T1] ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-ff]) [ 19.857972][ T1] acpi PNP0A08:00: _OSC: OS supports [ExtendedConfig ASPM ClockPM Segments MSI HPX-Type3] [ 19.955203][ T1] acpi PNP0A08:00: _OSC: platform does not support [LTR] [ 20.024818][ T1] acpi PNP0A08:00: _OSC: OS now controls [PCIeHotplug PME AER PCIeCapability] [ 20.145159][ T1] PCI host bridge to bus 0000:00 [ 20.191194][ T1] pci_bus 0000:00: Unknown NUMA node; performance will be reduced [ 20.271266][ T1] pci_bus 0000:00: root bus resource [io 0x0000-0x0cf7 window] [ 20.361477][ T1] pci_bus 0000:00: root bus resource [io 0x0d00-0xffff window] [ 20.440853][ T1] pci_bus 0000:00: root bus resource [mem 0x000a0000-0x000bffff window] [ 20.520694][ T1] pci_bus 0000:00: root bus resource [mem 0x80000000-0xafffffff window] [ 20.600856][ T1] pci_bus 0000:00: root bus resource [mem 0xc0000000-0xfebfffff window] [ 20.660536][ T1] pci_bus 0000:00: root bus resource [mem 0x580000000-0xd7fffffff window] [ 20.732950][ T1] pci_bus 0000:00: root bus resource [bus 00-ff] [ 20.791939][ T1] pci 0000:00:00.0: [8086:29c0] type 00 class 0x060000 [ 20.979758][ T1] pci 0000:00:01.0: [1af4:1050] type 00 class 0x030000 [ 21.100094][ T1] pci 0000:00:01.0: reg 0x10: [mem 0xfe000000-0xfe7fffff pref] [ 21.270094][ T1] pci 0000:00:01.0: reg 0x18: [mem 0xfe800000-0xfe803fff 64bit pref] [ 21.420094][ T1] pci 0000:00:01.0: reg 0x20: [mem 0xfebf4000-0xfebf4fff] [ 21.590094][ T1] pci 0000:00:01.0: reg 0x30: [mem 0xfebe0000-0xfebeffff pref] [ 22.049009][ T1] pci 0000:00:02.0: [1af4:1000] type 00 class 0x020000 [ 22.105574][ T1] pci 0000:00:02.0: reg 0x10: [io 0xc680-0xc69f] [ 22.170094][ T1] pci 0000:00:02.0: reg 0x14: [mem 0xfebf5000-0xfebf5fff] [ 22.228769][ T1] pci 0000:00:02.0: reg 0x20: [mem 0xfe804000-0xfe807fff 64bit pref] [ 22.264041][ T1] pci 0000:00:02.0: reg 0x30: [mem 0xfeb40000-0xfeb7ffff pref] [ 22.384882][ T1] pci 0000:00:03.0: [8086:100e] type 00 class 0x020000 [ 22.451214][ T1] pci 0000:00:03.0: reg 0x10: [mem 0xfebc0000-0xfebdffff] [ 22.506041][ T1] pci 0000:00:03.0: reg 0x14: [io 0xc600-0xc63f] [ 22.578622][ T1] pci 0000:00:03.0: reg 0x30: [mem 0xfeb80000-0xfebbffff pref] [ 22.648047][ T1] pci 0000:00:04.0: [1274:5000] type 00 class 0x040100 [ 22.699740][ T1] pci 0000:00:04.0: reg 0x10: [io 0xc400-0xc4ff] [ 22.774827][ T1] pci 0000:00:05.0: [8086:2415] type 00 class 0x040100 [ 22.840740][ T1] pci 0000:00:05.0: reg 0x10: [io 0xc000-0xc3ff] [ 22.906342][ T1] pci 0000:00:05.0: reg 0x14: [io 0xc500-0xc5ff] [ 22.987947][ T1] pci 0000:00:06.0: [8086:2668] type 00 class 0x040300 [ 23.027391][ T1] pci 0000:00:06.0: reg 0x10: [mem 0xfebf0000-0xfebf3fff] [ 23.126077][ T1] pci 0000:00:07.0: [1af4:1009] type 00 class 0x000200 [ 23.177786][ T1] pci 0000:00:07.0: reg 0x10: [io 0xc6a0-0xc6bf] [ 23.210095][ T1] pci 0000:00:07.0: reg 0x14: [mem 0xfebf6000-0xfebf6fff] [ 23.264850][ T1] pci 0000:00:07.0: reg 0x20: [mem 0xfe808000-0xfe80bfff 64bit pref] [ 23.364880][ T1] pci 0000:00:1d.0: [8086:2934] type 00 class 0x0c0300 [ 23.418192][ T1] pci 0000:00:1d.0: reg 0x20: [io 0xc6c0-0xc6df] [ 23.463406][ T1] pci 0000:00:1d.1: [8086:2935] type 00 class 0x0c0300 [ 23.517650][ T1] pci 0000:00:1d.1: reg 0x20: [io 0xc6e0-0xc6ff] [ 23.571442][ T1] pci 0000:00:1d.2: [8086:2936] type 00 class 0x0c0300 [ 23.647422][ T1] pci 0000:00:1d.2: reg 0x20: [io 0xc700-0xc71f] [ 23.751487][ T1] pci 0000:00:1d.7: [8086:293a] type 00 class 0x0c0320 [ 23.833777][ T1] pci 0000:00:1d.7: reg 0x10: [mem 0xfebf7000-0xfebf7fff] [ 23.977026][ T1] pci 0000:00:1f.0: [8086:2918] type 00 class 0x060100 [ 24.105956][ T1] pci 0000:00:1f.0: quirk: [io 0x0600-0x067f] claimed by ICH6 ACPI/GPIO/TCO [ 24.200094][ T1] pci 0000:00:1f.0: quirk_ich7_lpc+0x0/0x190 took 107421 usecs [ 24.320555][ T1] pci 0000:00:1f.2: [8086:2922] type 00 class 0x010601 [ 24.431935][ T1] pci 0000:00:1f.2: reg 0x20: [io 0xc720-0xc73f] [ 24.505142][ T1] pci 0000:00:1f.2: reg 0x24: [mem 0xfebf8000-0xfebf8fff] [ 24.600622][ T1] pci 0000:00:1f.3: [8086:2930] type 00 class 0x0c0500 [ 24.694088][ T1] pci 0000:00:1f.3: reg 0x20: [io 0x0700-0x073f] [ 24.896135][ T1] ACPI: PCI Interrupt Link [LNKA] (IRQs 5 *10 11) [ 24.964841][ T1] ACPI: PCI Interrupt Link [LNKB] (IRQs 5 *10 11) [ 25.025794][ T1] ACPI: PCI Interrupt Link [LNKC] (IRQs 5 10 *11) [ 25.055733][ T1] ACPI: PCI Interrupt Link [LNKD] (IRQs 5 10 *11) [ 25.104201][ T1] ACPI: PCI Interrupt Link [LNKE] (IRQs 5 *10 11) [ 25.144682][ T1] ACPI: PCI Interrupt Link [LNKF] (IRQs 5 *10 11) [ 25.183574][ T1] ACPI: PCI Interrupt Link [LNKG] (IRQs 5 10 *11) [ 25.212745][ T1] ACPI: PCI Interrupt Link [LNKH] (IRQs 5 10 *11) [ 25.231645][ T1] ACPI: PCI Interrupt Link [GSIA] (IRQs *16) [ 25.250662][ T1] ACPI: PCI Interrupt Link [GSIB] (IRQs *17) [ 25.270547][ T1] ACPI: PCI Interrupt Link [GSIC] (IRQs *18) [ 25.290959][ T1] ACPI: PCI Interrupt Link [GSID] (IRQs *19) [ 25.310663][ T1] ACPI: PCI Interrupt Link [GSIE] (IRQs *20) [ 25.340567][ T1] ACPI: PCI Interrupt Link [GSIF] (IRQs *21) [ 25.360499][ T1] ACPI: PCI Interrupt Link [GSIG] (IRQs *22) [ 25.391040][ T1] ACPI: PCI Interrupt Link [GSIH] (IRQs *23) [ 25.533111][ T1] iommu: Default domain type: Translated [ 25.570249][ T1] pci 0000:00:01.0: vgaarb: setting as boot VGA device [ 25.570249][ T1] pci 0000:00:01.0: vgaarb: VGA device added: decodes=io+mem,owns=io+mem,locks=none [ 25.630392][ T1] pci 0000:00:01.0: vgaarb: bridge control possible [ 25.670377][ T1] vgaarb: loaded [ 25.740876][ T1] SCSI subsystem initialized [ 25.788345][ T1] ACPI: bus type USB registered [ 25.804846][ T1] usbcore: registered new interface driver usbfs [ 25.841937][ T1] usbcore: registered new interface driver hub [ 25.861501][ T1] usbcore: registered new device driver usb [ 25.900649][ T1] mc: Linux media interface: v0.10 [ 25.920913][ T1] videodev: Linux video capture interface: v2.00 [ 25.950806][ T1] pps_core: LinuxPPS API ver. 1 registered [ 25.980300][ T1] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti [ 26.010955][ T1] PTP clock support registered [ 26.043342][ T1] EDAC MC: Ver: 3.0.0 [ 26.103469][ T1] Advanced Linux Sound Architecture Driver Initialized. [ 26.171430][ T1] Bluetooth: Core ver 2.22 [ 26.192743][ T1] NET: Registered protocol family 31 [ 26.210227][ T1] Bluetooth: HCI device and connection manager initialized [ 26.231050][ T1] Bluetooth: HCI socket layer initialized [ 26.240214][ T1] Bluetooth: L2CAP socket layer initialized [ 26.260496][ T1] Bluetooth: SCO socket layer initialized [ 26.270954][ T1] NET: Registered protocol family 8 [ 26.280190][ T1] NET: Registered protocol family 20 [ 26.300096][ T1] NetLabel: Initializing [ 26.310276][ T1] NetLabel: domain hash size = 128 [ 26.320274][ T1] NetLabel: protocols = UNLABELED CIPSOv4 CALIPSO [ 26.345515][ T1] NetLabel: unlabeled traffic allowed by default [ 26.377149][ T1] nfc: nfc_init: NFC Core ver 0.1 [ 26.392060][ T1] NET: Registered protocol family 39 [ 26.411811][ T1] PCI: Using ACPI for IRQ routing [ 29.254702][ T1] hpet0: at MMIO 0xfed00000, IRQs 2, 8, 0 [ 29.290306][ T1] hpet0: 3 comparators, 64-bit 100.000000 MHz counter [ 29.354699][ T1] clocksource: Switched to clocksource kvm-clock [ 33.380470][ T1] VFS: Disk quotas dquot_6.6.0 [ 33.598412][ C3] hrtimer: interrupt took 96806782 ns [ 33.831259][ T1] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes) [ 34.351004][ T1] FS-Cache: Loaded [ 34.624477][ T1] CacheFiles: Loaded [ 34.786163][ T1] TOMOYO: 2.6.0 [ 34.826443][ T1] Mandatory Access Control activated. [ 34.947947][ T1] pnp: PnP ACPI init [ 35.226580][ T1] pnp: PnP ACPI: found 6 devices [ 35.657529][ T1] clocksource: acpi_pm: mask: 0xffffff max_cycles: 0xffffff, max_idle_ns: 2085701024 ns [ 35.766762][ T1] NET: Registered protocol family 2 [ 35.906996][ T1] tcp_listen_portaddr_hash hash table entries: 1024 (order: 4, 81920 bytes, vmalloc) [ 36.015833][ T1] TCP established hash table entries: 16384 (order: 5, 131072 bytes, vmalloc) [ 36.142043][ T1] TCP bind hash table entries: 16384 (order: 8, 1179648 bytes, vmalloc) [ 36.224719][ T1] TCP: Hash tables configured (established 16384 bind 16384) [ 36.346321][ T1] MPTCP token hash table entries: 2048 (order: 5, 180224 bytes, vmalloc) [ 36.413819][ T1] UDP hash table entries: 1024 (order: 5, 163840 bytes, vmalloc) [ 36.482463][ T1] UDP-Lite hash table entries: 1024 (order: 5, 163840 bytes, vmalloc) [ 36.545706][ T1] NET: Registered protocol family 1 [ 36.618595][ T1] RPC: Registered named UNIX socket transport module. [ 36.647979][ T1] RPC: Registered udp transport module. [ 36.673108][ T1] RPC: Registered tcp transport module. [ 36.703641][ T1] RPC: Registered tcp NFSv4.1 backchannel transport module. [ 36.778493][ T1] NET: Registered protocol family 44 [ 36.802228][ T1] pci_bus 0000:00: resource 4 [io 0x0000-0x0cf7 window] [ 36.843952][ T1] pci_bus 0000:00: resource 5 [io 0x0d00-0xffff window] [ 36.892937][ T1] pci_bus 0000:00: resource 6 [mem 0x000a0000-0x000bffff window] [ 36.936739][ T1] pci_bus 0000:00: resource 7 [mem 0x80000000-0xafffffff window] [ 36.985214][ T1] pci_bus 0000:00: resource 8 [mem 0xc0000000-0xfebfffff window] [ 37.035456][ T1] pci_bus 0000:00: resource 9 [mem 0x580000000-0xd7fffffff window] [ 37.103771][ T1] pci 0000:00:01.0: Video device with shadowed ROM at [mem 0x000c0000-0x000dffff] [ 37.169939][ T1] pci 0000:00:01.0: pci_fixup_video+0x0/0x270 took 66106 usecs [ 37.275800][ T1] PCI Interrupt Link [GSIA] enabled at IRQ 16 [ 37.399907][ T1] pci 0000:00:1d.0: quirk_usb_early_handoff+0x0/0x105b took 159647 usecs [ 37.465158][ T1] PCI Interrupt Link [GSIB] enabled at IRQ 17 [ 37.531903][ T1] pci 0000:00:1d.1: quirk_usb_early_handoff+0x0/0x105b took 83159 usecs [ 37.603038][ T1] PCI Interrupt Link [GSIC] enabled at IRQ 18 [ 37.647654][ T1] pci 0000:00:1d.2: quirk_usb_early_handoff+0x0/0x105b took 71059 usecs [ 37.709387][ T1] PCI Interrupt Link [GSID] enabled at IRQ 19 [ 37.769227][ T1] pci 0000:00:1d.7: quirk_usb_early_handoff+0x0/0x105b took 72483 usecs [ 37.808365][ T1] PCI: CLS 0 bytes, default 64 [ 37.892770][ T1] PCI-DMA: Using software bounce buffering for IO (SWIOTLB) [ 37.932636][ T1] software IO TLB: mapped [mem 0x7ac00000-0x7ec00000] (64MB) [ 38.008310][ T1] kvm: no hardware support [ 38.033506][ T1] has_svm: not amd or hygon [ 38.059546][ T1] kvm: no hardware support [ 38.086372][ T1] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x1cd4c92266a, max_idle_ns: 440795223404 ns [ 38.148335][ T1] clocksource: Switched to clocksource tsc [ 38.194363][ T1] mce: Machine check injector initialized [ 38.263330][ T1] check: Scanning for low memory corruption every 60 seconds [ 38.879112][ T1] Initialise system trusted keyrings [ 38.909869][ T1] workingset: timestamp_bits=40 max_order=19 bucket_order=0 [ 38.949677][ T1] zbud: loaded [ 39.007975][ T1] DLM installed [ 39.045761][ T1] squashfs: version 4.0 (2009/01/31) Phillip Lougher [ 39.096679][ T1] FS-Cache: Netfs 'nfs' registered for caching [ 39.133877][ T1] NFS: Registering the id_resolver key type [ 39.159845][ T1] Key type id_resolver registered [ 39.185942][ T1] Key type id_legacy registered [ 39.219080][ T1] nfs4filelayout_init: NFSv4 File Layout Driver Registering... [ 39.275168][ T1] Installing knfsd (copyright (C) 1996 okir@monad.swb.de). [ 39.364715][ T1] FS-Cache: Netfs 'cifs' registered for caching [ 39.431932][ T1] Key type cifs.spnego registered [ 39.468270][ T1] Key type cifs.idmap registered [ 39.508045][ T1] ntfs: driver 2.1.32 [Flags: R/W]. [ 39.564809][ T1] fuse: init (API version 7.31) [ 39.645793][ T1] JFS: nTxBlock = 8192, nTxLock = 65536 [ 39.923913][ T1] SGI XFS with ACLs, security attributes, realtime, quota, no debug enabled [ 40.028571][ T1] 9p: Installing v9fs 9p2000 file system support [ 40.067311][ T1] FS-Cache: Netfs '9p' registered for caching [ 40.115760][ T1] ocfs2: Registered cluster interface o2cb [ 40.161600][ T1] ocfs2: Registered cluster interface user [ 40.215425][ T1] OCFS2 User DLM kernel interface loaded [ 40.404448][ T1] gfs2: GFS2 installed [ 40.539803][ T1] FS-Cache: Netfs 'ceph' registered for caching [ 40.601922][ T1] ceph: loaded (mds proto 32) [ 40.783072][ T1] NET: Registered protocol family 38 [ 40.821430][ T1] async_tx: api initialized (async) [ 40.856931][ T1] Key type asymmetric registered [ 40.899793][ T1] Asymmetric key parser 'x509' registered [ 40.944274][ T1] Asymmetric key parser 'pkcs8' registered [ 40.984877][ T1] Key type pkcs7_test registered [ 41.017380][ T1] Asymmetric key parser 'tpm_parser' registered [ 41.068629][ T1] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 243) [ 41.200081][ T1] io scheduler mq-deadline registered [ 41.245971][ T1] io scheduler kyber registered [ 41.287111][ T1] io scheduler bfq registered [ 41.410676][ T1] hgafb: HGA card not detected. [ 41.444863][ T1] hgafb: probe of hgafb.0 failed with error -22 [ 41.485633][ T1] usbcore: registered new interface driver udlfb [ 41.583773][ T1] uvesafb: failed to execute /sbin/v86d [ 41.631452][ T1] uvesafb: make sure that the v86d helper is installed and executable [ 41.702528][ T1] uvesafb: Getting VBE info block failed (eax=0x4f00, err=-2) [ 41.772119][ T1] uvesafb: vbe_init() failed with -22 [ 41.821931][ T1] uvesafb: probe of uvesafb.0 failed with error -22 [ 41.895315][ T1] vga16fb: mapped to 0x00000000b9cc9755 [ 71.376406][ T1] Console: switching to colour frame buffer device 80x30 [ 109.725558][ T1] fb0: VGA16 VGA frame buffer device [ 110.026329][ T1] input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN:00/input/input0 [ 110.185306][ T1] ACPI: Power Button [PWRF] [ 110.613653][ T254] ================================================================== [ 110.620504][ T254] BUG: KASAN: global-out-of-bounds in internal_create_group+0x9d8/0xb20 [ 110.620504][ T254] Read of size 8 at addr ffffffff8a2e73d0 by task kworker/u17:5/254 [ 110.620504][ T254] [ 110.620504][ T254] CPU: 2 PID: 254 Comm: kworker/u17:5 Not tainted 5.9.0-rc1-syzkaller #0 [ 110.620504][ T254] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 [ 110.620504][ T254] Workqueue: events_unbound async_run_entry_fn [ 110.620504][ T254] Call Trace: [ 110.620504][ T254] dump_stack+0x18f/0x20d [ 110.620504][ T254] ? internal_create_group+0x9d8/0xb20 [ 110.620504][ T254] ? internal_create_group+0x9d8/0xb20 [ 110.620504][ T254] print_address_description.constprop.0.cold+0x5/0x497 [ 110.620504][ T254] ? vprintk_func+0x97/0x1a6 [ 110.620504][ T254] ? internal_create_group+0x9d8/0xb20 [ 110.620504][ T254] ? internal_create_group+0x9d8/0xb20 [ 110.620504][ T254] kasan_report.cold+0x1f/0x37 [ 110.620504][ T254] ? internal_create_group+0x9d8/0xb20 [ 110.620504][ T254] ? state_show+0xf0/0xf0 [ 110.620504][ T254] internal_create_group+0x9d8/0xb20 [ 110.620504][ T254] ? sysfs_remove_group+0x170/0x170 [ 110.620504][ T254] internal_create_groups.part.0+0x90/0x140 [ 110.620504][ T254] sysfs_create_groups+0x25/0x50 [ 110.620504][ T254] device_add+0x7fd/0x1c40 [ 110.620504][ T254] ? devlink_add_symlinks+0x450/0x450 [ 110.620504][ T254] ? lock_release+0x8e0/0x8e0 [ 110.620504][ T254] ? lock_downgrade+0x830/0x830 [ 110.620504][ T254] ? __schedule+0x88e/0x21e0 [ 110.620504][ T254] ? nd_synchronize+0x20/0x20 [ 110.620504][ T254] nd_async_device_register+0x12/0x80 [ 110.620504][ T254] async_run_entry_fn+0x121/0x530 [ 110.620504][ T254] process_one_work+0x94c/0x1670 [ 110.620504][ T254] ? lock_release+0x8e0/0x8e0 [ 110.620504][ T254] ? pwq_dec_nr_in_flight+0x2d0/0x2d0 [ 110.620504][ T254] ? rwlock_bug.part.0+0x90/0x90 [ 110.620504][ T254] worker_thread+0x64c/0x1120 [ 110.620504][ T254] ? process_one_work+0x1670/0x1670 [ 110.620504][ T254] kthread+0x3b5/0x4a0 [ 110.620504][ T254] ? __kthread_bind_mask+0xc0/0xc0 [ 110.620504][ T254] ? __kthread_bind_mask+0xc0/0xc0 [ 110.620504][ T254] ret_from_fork+0x1f/0x30 [ 110.620504][ T254] [ 110.620504][ T254] The buggy address belongs to the variable: [ 110.620504][ T254] nvdimm_firmware_attributes+0x10/0x40 [ 110.620504][ T254] [ 110.620504][ T254] Memory state around the buggy address: [ 110.620504][ T254] ffffffff8a2e7280: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 110.620504][ T254] ffffffff8a2e7300: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 110.620504][ T254] >ffffffff8a2e7380: 00 00 00 00 f9 f9 f9 f9 00 00 f9 f9 f9 f9 f9 f9 [ 110.620504][ T254] ^ [ 110.620504][ T254] ffffffff8a2e7400: 00 00 00 00 00 00 00 f9 f9 f9 f9 f9 00 00 00 00 [ 110.620504][ T254] ffffffff8a2e7480: 00 00 00 f9 f9 f9 f9 f9 00 00 00 00 00 00 00 f9 [ 110.620504][ T254] ================================================================== [ 110.620504][ T254] Disabling lock debugging due to kernel taint [ 111.418639][ T254] Kernel panic - not syncing: panic_on_warn set ... [ 111.421234][ T254] CPU: 2 PID: 254 Comm: kworker/u17:5 Tainted: G B 5.9.0-rc1-syzkaller #0 [ 111.421234][ T254] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 [ 111.421234][ T254] Workqueue: events_unbound async_run_entry_fn [ 111.421234][ T254] Call Trace: [ 111.421234][ T254] dump_stack+0x18f/0x20d [ 111.421234][ T254] ? internal_create_group+0x960/0xb20 [ 111.421234][ T254] panic+0x2e3/0x75c [ 111.421234][ T254] ? __warn_printk+0xf3/0xf3 [ 111.421234][ T254] ? preempt_schedule_common+0x59/0xc0 [ 111.421234][ T254] ? internal_create_group+0x9d8/0xb20 [ 111.421234][ T254] ? preempt_schedule_thunk+0x16/0x18 [ 111.421234][ T254] ? trace_hardirqs_on+0x55/0x220 [ 111.421234][ T254] ? internal_create_group+0x9d8/0xb20 [ 111.421234][ T254] ? internal_create_group+0x9d8/0xb20 [ 111.421234][ T254] end_report+0x4d/0x53 [ 111.421234][ T254] kasan_report.cold+0xd/0x37 [ 111.421234][ T254] ? internal_create_group+0x9d8/0xb20 [ 111.421234][ T254] ? state_show+0xf0/0xf0 [ 111.421234][ T254] internal_create_group+0x9d8/0xb20 [ 111.421234][ T254] ? sysfs_remove_group+0x170/0x170 [ 111.421234][ T254] internal_create_groups.part.0+0x90/0x140 [ 111.421234][ T254] sysfs_create_groups+0x25/0x50 [ 111.421234][ T254] device_add+0x7fd/0x1c40 [ 111.421234][ T254] ? devlink_add_symlinks+0x450/0x450 [ 111.421234][ T254] ? lock_release+0x8e0/0x8e0 [ 111.421234][ T254] ? lock_downgrade+0x830/0x830 [ 111.421234][ T254] ? __schedule+0x88e/0x21e0 [ 111.421234][ T254] ? nd_synchronize+0x20/0x20 [ 111.421234][ T254] nd_async_device_register+0x12/0x80 [ 111.421234][ T254] async_run_entry_fn+0x121/0x530 [ 111.421234][ T254] process_one_work+0x94c/0x1670 [ 111.421234][ T254] ? lock_release+0x8e0/0x8e0 [ 111.421234][ T254] ? pwq_dec_nr_in_flight+0x2d0/0x2d0 [ 111.421234][ T254] ? rwlock_bug.part.0+0x90/0x90 [ 111.421234][ T254] worker_thread+0x64c/0x1120 [ 111.421234][ T254] ? process_one_work+0x1670/0x1670 [ 111.421234][ T254] kthread+0x3b5/0x4a0 [ 111.421234][ T254] ? __kthread_bind_mask+0xc0/0xc0 [ 111.421234][ T254] ? __kthread_bind_mask+0xc0/0xc0 [ 111.421234][ T254] ret_from_fork+0x1f/0x30 [ 111.421234][ T254] Kernel Offset: disabled [ 111.421234][ T254] Rebooting in 86400 seconds..