failed to run ["ssh" "-p" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "root@10.128.10.31" "pwd"]: exit status 255 ssh: connect to host 10.128.10.31 port 22: Connection timed out Pseudo-terminal will not be allocated because stdin is not a terminal. Warning: Permanently added '[ssh-serialport.googleapis.com]:9600,[216.239.38.127]:9600' (RSA) to the list of known hosts. serialport: Connected to syzkaller.us-central1-c.ci-upstream-kasan-gce-smack-root-test-0 port 1 (session ID: 87590d02c4933dddb663040b0d040edd7f3fde6c19582c4415ae0942b40cf9b8, active connections: 1). SeaBIOS (version 1.8.2-google) Total RAM Size = 0x0000000200000000 = 8192 MiB CPUs found: 2 Max CPUs supported: 2 SeaBIOS (version 1.8.2-google) Machine UUID 87dcd872-7425-ada8-53cd-067520c50826 found virtio-scsi at 0:3 virtio-scsi vendor='Google' product='PersistentDisk' rev='1' type=0 removable=0 virtio-scsi blksize=512 sectors=4194304 = 2048 MiB drive 0x000f2700: PCHS=0/0/0 translation=lba LCHS=520/128/63 s=4194304 Sending Seabios boot VM event. Booting from Hard Disk 0... [ 0.000000][ T0] Linux version 5.19.0-rc1-syzkaller-00011-g9886142c7a22 (syzkaller@syzkaller) (Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2) #0 SMP PREEMPT_DYNAMIC now [ 0.000000][ T0] Command line: BOOT_IMAGE=/boot/bzImage root=/dev/sda1 console=ttyS0 [ 0.000000][ T0] KERNEL supported cpus: [ 0.000000][ T0] Intel GenuineIntel [ 0.000000][ T0] AMD AuthenticAMD [ 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] signal: max sigframe size: 1776 [ 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 0x0000000100000000-0x000000023fffffff] usable [ 0.000000][ T0] printk: bootconsole [earlyser0] enabled [ 0.000000][ T0] ERROR: earlyprintk= earlyser already used [ 0.000000][ T0] ERROR: earlyprintk= earlyser already used [ 0.000000][ T0] ********************************************************** [ 0.000000][ T0] ** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE ** [ 0.000000][ T0] ** ** [ 0.000000][ T0] ** This system shows unhashed kernel memory addresses ** [ 0.000000][ T0] ** via the console, logs, and other interfaces. This ** [ 0.000000][ T0] ** might reduce the security of your system. ** [ 0.000000][ T0] ** ** [ 0.000000][ T0] ** If you see this message and you are not debugging ** [ 0.000000][ T0] ** the kernel, report this immediately to your system ** [ 0.000000][ T0] ** administrator! ** [ 0.000000][ T0] ** ** [ 0.000000][ T0] ** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE ** [ 0.000000][ T0] ********************************************************** [ 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 [ 0.000007][ T0] kvm-clock: using sched offset of 4745804900 cycles [ 0.000789][ T0] clocksource: kvm-clock: mask: 0xffffffffffffffff max_cycles: 0x1cd42e4dffb, max_idle_ns: 881590591483 ns [ 0.003330][ T0] tsc: Detected 2200.218 MHz processor [ 0.006919][ T0] last_pfn = 0x240000 max_arch_pfn = 0x400000000 [ 0.008007][ T0] x86/PAT: Configuration [0-7]: WB WC UC- UC WB WP UC- WT [ 0.009085][ T0] last_pfn = 0xbfffd max_arch_pfn = 0x400000000 [ 0.015738][ T0] found SMP MP-table at [mem 0x000f29c0-0x000f29cf] [ 0.017032][ T0] Using GB pages for direct mapping [ 0.019122][ T0] ACPI: Early table checksum verification disabled [ 0.020036][ T0] ACPI: RSDP 0x00000000000F2740 000014 (v00 Google) [ 0.020906][ T0] ACPI: RSDT 0x00000000BFFFFF90 000038 (v01 Google GOOGRSDT 00000001 GOOG 00000001) [ 0.022171][ T0] ACPI: FACP 0x00000000BFFFF330 0000F4 (v02 Google GOOGFACP 00000001 GOOG 00000001) [ 0.023668][ T0] ACPI: DSDT 0x00000000BFFFD8C0 001A64 (v01 Google GOOGDSDT 00000001 GOOG 00000001) [ 0.025205][ T0] ACPI: FACS 0x00000000BFFFD880 000040 [ 0.026244][ T0] ACPI: FACS 0x00000000BFFFD880 000040 [ 0.027351][ T0] ACPI: SRAT 0x00000000BFFFFE60 0000C8 (v03 Google GOOGSRAT 00000001 GOOG 00000001) [ 0.028669][ T0] ACPI: APIC 0x00000000BFFFFDB0 000076 (v05 Google GOOGAPIC 00000001 GOOG 00000001) [ 0.030008][ T0] ACPI: SSDT 0x00000000BFFFF430 000980 (v01 Google GOOGSSDT 00000001 GOOG 00000001) [ 0.031333][ T0] ACPI: WAET 0x00000000BFFFFE30 000028 (v01 Google GOOGWAET 00000001 GOOG 00000001) [ 0.032765][ T0] ACPI: Reserving FACP table memory at [mem 0xbffff330-0xbffff423] [ 0.034077][ T0] ACPI: Reserving DSDT table memory at [mem 0xbfffd8c0-0xbffff323] [ 0.035141][ T0] ACPI: Reserving FACS table memory at [mem 0xbfffd880-0xbfffd8bf] [ 0.036422][ T0] ACPI: Reserving FACS table memory at [mem 0xbfffd880-0xbfffd8bf] [ 0.037602][ T0] ACPI: Reserving SRAT table memory at [mem 0xbffffe60-0xbfffff27] [ 0.038763][ T0] ACPI: Reserving APIC table memory at [mem 0xbffffdb0-0xbffffe25] [ 0.040184][ T0] ACPI: Reserving SSDT table memory at [mem 0xbffff430-0xbffffdaf] [ 0.041341][ T0] ACPI: Reserving WAET table memory at [mem 0xbffffe30-0xbffffe57] [ 0.042848][ T0] SRAT: PXM 0 -> APIC 0x00 -> Node 0 [ 0.043586][ T0] SRAT: PXM 0 -> APIC 0x01 -> Node 0 [ 0.044396][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x00000000-0x0009ffff] [ 0.045521][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x00100000-0xbfffffff] [ 0.046544][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x100000000-0x23fffffff] [ 0.047572][ T0] NUMA: Node 0 [mem 0x00000000-0x0009ffff] + [mem 0x00100000-0xbfffffff] -> [mem 0x00000000-0xbfffffff] [ 0.049817][ T0] NUMA: Node 0 [mem 0x00000000-0xbfffffff] + [mem 0x100000000-0x23fffffff] -> [mem 0x00000000-0x23fffffff] [ 0.051549][ T0] Faking node 0 at [mem 0x0000000000000000-0x000000013fffffff] (5120MB) [ 0.052700][ T0] Faking node 1 at [mem 0x0000000140000000-0x000000023fffffff] (4096MB) [ 0.054429][ T0] NODE_DATA(0) allocated [mem 0x13fffa000-0x13fffffff] [ 0.055906][ T0] NODE_DATA(1) allocated [mem 0x23fff7000-0x23fffcfff] [ 0.098220][ T0] Zone ranges: [ 0.098991][ T0] DMA [mem 0x0000000000001000-0x0000000000ffffff] [ 0.100535][ T0] DMA32 [mem 0x0000000001000000-0x00000000ffffffff] [ 0.101907][ T0] Normal [mem 0x0000000100000000-0x000000023fffffff] [ 0.103250][ T0] Device empty [ 0.103841][ T0] Movable zone start for each node [ 0.104562][ T0] Early memory node ranges [ 0.105162][ T0] node 0: [mem 0x0000000000001000-0x000000000009efff] [ 0.106664][ T0] node 0: [mem 0x0000000000100000-0x00000000bfffcfff] [ 0.108067][ T0] node 0: [mem 0x0000000100000000-0x000000013fffffff] [ 0.109183][ T0] node 1: [mem 0x0000000140000000-0x000000023fffffff] [ 0.110672][ T0] Initmem setup node 0 [mem 0x0000000000001000-0x000000013fffffff] [ 0.112084][ T0] Initmem setup node 1 [mem 0x0000000140000000-0x000000023fffffff] [ 0.113383][ T0] On node 0, zone DMA: 1 pages in unavailable ranges [ 0.113608][ T0] On node 0, zone DMA: 97 pages in unavailable ranges [ 0.166267][ T0] On node 0, zone Normal: 3 pages in unavailable ranges [ 0.533609][ T0] kasan: KernelAddressSanitizer initialized [ 0.536080][ T0] ACPI: PM-Timer IO Port: 0xb008 [ 0.536914][ T0] ACPI: LAPIC_NMI (acpi_id[0xff] dfl dfl lint[0x1]) [ 0.538318][ T0] IOAPIC[0]: apic_id 0, version 17, address 0xfec00000, GSI 0-23 [ 0.539493][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 high level) [ 0.540764][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level) [ 0.542236][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 high level) [ 0.543313][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 high level) [ 0.544340][ T0] ACPI: Using ACPI (MADT) for SMP configuration information [ 0.545492][ T0] smpboot: Allowing 2 CPUs, 0 hotplug CPUs [ 0.546390][ T0] PM: hibernation: Registered nosave memory: [mem 0x00000000-0x00000fff] [ 0.548020][ T0] PM: hibernation: Registered nosave memory: [mem 0x0009f000-0x0009ffff] [ 0.549131][ T0] PM: hibernation: Registered nosave memory: [mem 0x000a0000-0x000effff] [ 0.550422][ T0] PM: hibernation: Registered nosave memory: [mem 0x000f0000-0x000fffff] [ 0.551675][ T0] PM: hibernation: Registered nosave memory: [mem 0xbfffd000-0xbfffffff] [ 0.553142][ T0] PM: hibernation: Registered nosave memory: [mem 0xc0000000-0xfffbbfff] [ 0.554297][ T0] PM: hibernation: Registered nosave memory: [mem 0xfffbc000-0xffffffff] [ 0.555496][ T0] [mem 0xc0000000-0xfffbbfff] available for PCI devices [ 0.556436][ T0] Booting paravirtualized kernel on KVM [ 0.557224][ T0] clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns [ 0.641674][ T0] setup_percpu: NR_CPUS:8 nr_cpumask_bits:8 nr_cpu_ids:2 nr_node_ids:2 [ 0.643969][ T0] percpu: Embedded 69 pages/cpu s242888 r8192 d31544 u1048576 [ 0.645287][ T0] kvm-guest: PV spinlocks enabled [ 0.646130][ T0] PV qspinlock hash table entries: 256 (order: 0, 4096 bytes, linear) [ 0.647770][ T0] Fallback order for Node 0: 0 1 [ 0.648511][ T0] Fallback order for Node 1: 1 0 [ 0.649329][ T0] Built 2 zonelists, mobility grouping on. Total pages: 2064125 [ 0.650555][ T0] Policy zone: Normal [ 0.651099][ T0] Kernel command line: earlyprintk=serial net.ifnames=0 sysctl.kernel.hung_task_all_cpu_backtrace=1 ima_policy=tcb 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 binder.debug_mask=0 rcupdate.rcu_expedited=1 no_hash_pointers page_owner=on sysctl.vm.nr_hugepages=4 sysctl.vm.nr_overcommit_hugepages=4 secretmem.enable=1 sysctl.max_rcu_stall_to_panic=1 msr.allow_writes=off root=/dev/sda console=ttyS0 vsyscall=native numa=fake=2 kvm-intel.nested=1 spec_store_bypass_disable=prctl nopcid 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 dummy_hcd.num=8 smp.csd_lock_timeout=100000 watchdog_thresh=55 workqueue.watchdog_thresh=140 sysctl.net.core.netdev_unregister_timeout_secs=140 panic_on_warn=1 BOOT_IMAGE=/boot/bzImage root=/dev/sda1 console=ttyS0 [ 0.663460][ T0] Unknown kernel command line parameters "spec_store_bypass_disable=prctl BOOT_IMAGE=/boot/bzImage", will be passed to user space. [ 0.666294][ T0] mem auto-init: stack:all(zero), heap alloc:on, heap free:off [ 0.667686][ T0] Stack Depot early init allocating hash table with memblock_alloc, 8388608 bytes [ 1.557676][ T0] Memory: 6823604K/8388204K available (153629K kernel code, 24929K rwdata, 31788K rodata, 2528K init, 35728K bss, 1564344K reserved, 0K cma-reserved) [ 1.561401][ T0] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=2 [ 1.564885][ T0] Dynamic Preempt: full [ 1.566388][ T0] Running RCU self tests [ 1.567112][ T0] rcu: Preemptible hierarchical RCU implementation. [ 1.568016][ T0] rcu: RCU lockdep checking is enabled. [ 1.568738][ T0] rcu: RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=2. [ 1.569876][ T0] rcu: RCU callback double-/use-after-free debug is enabled. [ 1.570967][ T0] rcu: RCU debug extended QS entry/exit. [ 1.571900][ T0] All grace periods are expedited (rcu_expedited). [ 1.572845][ T0] Trampoline variant of Tasks RCU enabled. [ 1.573851][ T0] Tracing variant of Tasks RCU enabled. [ 1.574658][ T0] rcu: RCU calculated value of scheduler-enlistment delay is 10 jiffies. [ 1.575810][ T0] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2 [ 1.609245][ T0] NR_IRQS: 4352, nr_irqs: 440, preallocated irqs: 16 [ 1.610842][ T0] rcu: srcu_init: Setting srcu_struct sizes based on contention. [ 1.612364][ T0] kfence: initialized - using 2097152 bytes for 255 objects at 0xffff88823bc00000-0xffff88823be00000 [ 1.613877][ T0] random: crng init done [ 1.616013][ T0] Console: colour VGA+ 80x25 [ 1.616704][ T0] printk: console [ttyS0] enabled [ 1.616704][ T0] printk: console [ttyS0] enabled [ 1.618300][ T0] printk: bootconsole [earlyser0] disabled [ 1.618300][ T0] printk: bootconsole [earlyser0] disabled [ 1.619945][ T0] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar [ 1.621465][ T0] ... MAX_LOCKDEP_SUBCLASSES: 8 [ 1.622334][ T0] ... MAX_LOCK_DEPTH: 48 [ 1.623139][ T0] ... MAX_LOCKDEP_KEYS: 8192 [ 1.623887][ T0] ... CLASSHASH_SIZE: 4096 [ 1.624659][ T0] ... MAX_LOCKDEP_ENTRIES: 131072 [ 1.625631][ T0] ... MAX_LOCKDEP_CHAINS: 262144 [ 1.626545][ T0] ... CHAINHASH_SIZE: 131072 [ 1.627340][ T0] memory used by lock dependency info: 20657 kB [ 1.628384][ T0] memory used for stack traces: 8320 kB [ 1.629316][ T0] per task-struct memory footprint: 1920 bytes [ 1.630546][ T0] mempolicy: Enabling automatic NUMA balancing. Configure with numa_balancing= or the kernel.numa_balancing sysctl [ 1.632320][ T0] ACPI: Core revision 20220331 [ 1.633887][ T0] APIC: Switch to symmetric I/O mode setup [ 1.640334][ T0] ..TIMER: vector=0x30 apic1=0 pin1=0 apic2=-1 pin2=-1 [ 1.641629][ T0] clocksource: tsc-early: mask: 0xffffffffffffffff max_cycles: 0x1fb700c3c76, max_idle_ns: 440795286388 ns [ 1.643941][ T0] Calibrating delay loop (skipped) preset value.. 4400.43 BogoMIPS (lpj=22002180) [ 1.645605][ T0] pid_max: default: 32768 minimum: 301 [ 1.646796][ T0] LSM: Security Framework initializing [ 1.647722][ T0] landlock: Up and running. [ 1.648347][ T0] Yama: becoming mindful. [ 1.649628][ T0] TOMOYO Linux initialized [ 1.650647][ T0] Smack: Initializing. [ 1.651321][ T0] Smack: Netfilter enabled. [ 1.651967][ T0] Smack: IPv6 Netfilter enabled. [ 1.652920][ T0] LSM support for eBPF active [ 1.657926][ T0] Dentry cache hash table entries: 1048576 (order: 11, 8388608 bytes, vmalloc hugepage) [ 1.661930][ T0] Inode-cache hash table entries: 524288 (order: 10, 4194304 bytes, vmalloc hugepage) [ 1.663573][ T0] Mount-cache hash table entries: 16384 (order: 5, 131072 bytes, vmalloc) [ 1.663986][ T0] Mountpoint-cache hash table entries: 16384 (order: 5, 131072 bytes, vmalloc) [ 1.669355][ T0] Last level iTLB entries: 4KB 64, 2MB 8, 4MB 8 [ 1.670615][ T0] Last level dTLB entries: 4KB 64, 2MB 0, 4MB 0, 1GB 4 [ 1.671635][ T0] Spectre V1 : Mitigation: usercopy/swapgs barriers and __user pointer sanitization [ 1.673980][ T0] Spectre V2 : Kernel not compiled with retpoline; no mitigation available! [ 1.673987][ T0] Spectre V2 : Vulnerable [ 1.676170][ T0] Spectre V2 : Spectre v2 / SpectreRSB mitigation: Filling RSB on context switch [ 1.677767][ T0] Spectre V2 : Enabling Restricted Speculation for firmware calls [ 1.679017][ T0] Spectre V2 : mitigation: Enabling conditional Indirect Branch Prediction Barrier [ 1.680384][ T0] Spectre V2 : User space: Mitigation: STIBP via prctl [ 1.682014][ T0] Speculative Store Bypass: Mitigation: Speculative Store Bypass disabled via prctl [ 1.683941][ T0] TAA: Mitigation: Clear CPU buffers [ 1.684832][ T0] MDS: Mitigation: Clear CPU buffers [ 1.688370][ T0] Freeing SMP alternatives memory: 116K [ 1.810453][ T1] smpboot: CPU0: Intel(R) Xeon(R) CPU @ 2.20GHz (family: 0x6, model: 0x4f, stepping: 0x0) [ 1.813913][ T1] cblist_init_generic: Setting adjustable number of callback queues. [ 1.813913][ T1] cblist_init_generic: Setting shift to 1 and lim to 1. [ 1.813913][ T1] cblist_init_generic: Setting shift to 1 and lim to 1. [ 1.813913][ T1] Running RCU-tasks wait API self tests [ 1.944256][ T1] Performance Events: unsupported p6 CPU model 79 no PMU driver, software events only. [ 1.947227][ T1] rcu: Hierarchical SRCU implementation. [ 1.947417][ T16] printk: console [ttyS0] printing thread started [ 1.954458][ T1] NMI watchdog: Perf NMI watchdog permanently disabled [ 1.955111][ T1] smp: Bringing up secondary CPUs ... [ 1.956522][ T1] x86: Booting SMP configuration: [ 1.956526][ T1] .... node #0, CPUs: #1 [ 1.957684][ 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. [ 1.957684][ 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. [ 1.957684][ T1] smp: Brought up 2 nodes, 2 CPUs [ 1.957684][ T1] smpboot: Max logical packages: 1 [ 1.957684][ T1] smpboot: Total of 2 processors activated (8800.87 BogoMIPS) [ 1.983968][ T13] Callback from call_rcu_tasks_trace() invoked. [ 2.007313][ T1] allocated 134217728 bytes of page_ext [ 2.007559][ T1] Node 0, zone DMA: page owner found early allocated 0 pages [ 2.016772][ T1] Node 0, zone DMA32: page owner found early allocated 19123 pages [ 2.026388][ T1] Node 0, zone Normal: page owner found early allocated 100 pages [ 2.030406][ T1] Node 1, zone Normal: page owner found early allocated 19162 pages [ 2.034517][ T1] devtmpfs: initialized [ 2.035867][ T1] x86/mm: Memory block size: 128MB [ 2.066186][ T1] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns [ 2.066377][ T1] futex hash table entries: 512 (order: 4, 65536 bytes, vmalloc) [ 2.073935][ T1] PM: RTC time: 00:50:02, date: 2022-06-08 [ 2.096539][ T1] NET: Registered PF_NETLINK/PF_ROUTE protocol family [ 2.099055][ T1] audit: initializing netlink subsys (disabled) [ 2.104002][ T28] audit: type=2000 audit(1654649402.162:1): state=initialized audit_enabled=0 res=1 [ 2.103938][ T1] thermal_sys: Registered thermal governor 'step_wise' [ 2.103938][ T1] thermal_sys: Registered thermal governor 'user_space' [ 2.103938][ T1] cpuidle: using governor menu [ 2.103938][ T1] NET: Registered PF_QIPCRTR protocol family [ 2.117524][ T1] HugeTLB: can optimize 4095 vmemmap pages for hugepages-1048576kB [ 2.119175][ T1] PCI: Using configuration type 1 for base access [ 2.164504][ T12] Callback from call_rcu_tasks() invoked. [ 2.334406][ T1] WARNING: workqueue cpumask: online intersect > possible intersect [ 2.336483][ T1] HugeTLB: can optimize 7 vmemmap pages for hugepages-2048kB [ 2.336518][ T1] HugeTLB registered 1.00 GiB page size, pre-allocated 0 pages [ 2.336529][ T1] HugeTLB registered 2.00 MiB page size, pre-allocated 0 pages [ 2.358576][ T1] cryptd: max_cpu_qlen set to 1000 [ 2.365186][ T1] raid6: skipped pq benchmark and selected avx2x4 [ 2.365198][ T1] raid6: using avx2x2 recovery algorithm [ 2.366610][ T1] ACPI: Added _OSI(Module Device) [ 2.366620][ T1] ACPI: Added _OSI(Processor Device) [ 2.366628][ T1] ACPI: Added _OSI(3.0 _SCP Extensions) [ 2.366636][ T1] ACPI: Added _OSI(Processor Aggregator Device) [ 2.366661][ T1] ACPI: Added _OSI(Linux-Dell-Video) [ 2.366684][ T1] ACPI: Added _OSI(Linux-Lenovo-NV-HDMI-Audio) [ 2.366707][ T1] ACPI: Added _OSI(Linux-HPI-Hybrid-Graphics) [ 2.484434][ T1] ACPI: 2 ACPI AML tables successfully acquired and loaded [ 2.640213][ T1] ACPI: Interpreter enabled [ 2.640645][ T1] ACPI: PM: (supports S0 S3 S4 S5) [ 2.640678][ T1] ACPI: Using IOAPIC for interrupt routing [ 2.641634][ T1] PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug [ 2.641660][ T1] PCI: Using E820 reservations for host bridge windows [ 2.654218][ T1] ACPI: Enabled 16 GPEs in block 00 to 0F [ 2.795335][ T1] ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-ff]) [ 2.795430][ T1] acpi PNP0A03:00: _OSC: OS supports [ASPM ClockPM Segments MSI HPX-Type3] [ 2.795448][ T1] acpi PNP0A03:00: _OSC: not requesting OS control; OS requires [ExtendedConfig ASPM ClockPM MSI] [ 2.796050][ T1] acpi PNP0A03:00: fail to add MMCONFIG information, can't access extended PCI configuration space under this bridge. [ 2.816667][ T1] PCI host bridge to bus 0000:00 [ 2.816681][ T1] pci_bus 0000:00: Unknown NUMA node; performance will be reduced [ 2.816704][ T1] pci_bus 0000:00: root bus resource [io 0x0000-0x0cf7 window] [ 2.816729][ T1] pci_bus 0000:00: root bus resource [io 0x0d00-0xffff window] [ 2.816751][ T1] pci_bus 0000:00: root bus resource [mem 0x000a0000-0x000bffff window] [ 2.816773][ T1] pci_bus 0000:00: root bus resource [mem 0xc0000000-0xfebfefff window] [ 2.816799][ T1] pci_bus 0000:00: root bus resource [bus 00-ff] [ 2.817289][ T1] pci 0000:00:00.0: [8086:1237] type 00 class 0x060000 [ 2.823445][ T1] pci 0000:00:01.0: [8086:7110] type 00 class 0x060100 [ 2.869335][ T1] pci 0000:00:01.3: [8086:7113] type 00 class 0x068000 [ 2.894188][ T1] pci 0000:00:01.3: quirk: [io 0xb000-0xb03f] claimed by PIIX4 ACPI [ 2.897459][ T1] pci 0000:00:03.0: [1af4:1004] type 00 class 0x000000 [ 2.912101][ T1] pci 0000:00:03.0: reg 0x10: [io 0xc000-0xc03f] [ 2.919977][ T1] pci 0000:00:03.0: reg 0x14: [mem 0xfe800000-0xfe80007f] [ 2.944348][ T1] pci 0000:00:04.0: [1af4:1000] type 00 class 0x020000 [ 2.953114][ T1] pci 0000:00:04.0: reg 0x10: [io 0xc040-0xc07f] [ 2.963942][ T1] pci 0000:00:04.0: reg 0x14: [mem 0xfe801000-0xfe80107f] [ 2.987721][ T1] pci 0000:00:05.0: [1ae0:a002] type 00 class 0x030000 [ 3.004042][ T1] pci 0000:00:05.0: reg 0x10: [mem 0xfe000000-0xfe7fffff] [ 3.038992][ T1] pci 0000:00:05.0: Video device with shadowed ROM at [mem 0x000c0000-0x000dffff] [ 3.047061][ T1] pci 0000:00:06.0: [1af4:1002] type 00 class 0x00ff00 [ 3.057865][ T1] pci 0000:00:06.0: reg 0x10: [io 0xc080-0xc09f] [ 3.068677][ T1] pci 0000:00:06.0: reg 0x14: [mem 0xfe802000-0xfe80207f] [ 3.093006][ T1] pci 0000:00:07.0: [1af4:1005] type 00 class 0x00ff00 [ 3.103942][ T1] pci 0000:00:07.0: reg 0x10: [io 0xc0a0-0xc0bf] [ 3.110444][ T1] pci 0000:00:07.0: reg 0x14: [mem 0xfe803000-0xfe80303f] [ 3.155357][ T1] ACPI: PCI: Interrupt link LNKA configured for IRQ 10 [ 3.161253][ T1] ACPI: PCI: Interrupt link LNKB configured for IRQ 10 [ 3.170763][ T1] ACPI: PCI: Interrupt link LNKC configured for IRQ 11 [ 3.178228][ T1] ACPI: PCI: Interrupt link LNKD configured for IRQ 11 [ 3.181552][ T1] ACPI: PCI: Interrupt link LNKS configured for IRQ 9 [ 3.198984][ T1] iommu: Default domain type: Translated [ 3.198984][ T1] iommu: DMA domain TLB invalidation policy: lazy mode [ 3.200812][ T1] SCSI subsystem initialized [ 3.203936][ T1] ACPI: bus type USB registered [ 3.203936][ T1] usbcore: registered new interface driver usbfs [ 3.203936][ T1] usbcore: registered new interface driver hub [ 3.203959][ T1] usbcore: registered new device driver usb [ 3.205435][ T1] mc: Linux media interface: v0.10 [ 3.205611][ T1] videodev: Linux video capture interface: v2.00 [ 3.206338][ T1] pps_core: LinuxPPS API ver. 1 registered [ 3.206345][ T1] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti [ 3.206461][ T1] PTP clock support registered [ 3.214351][ T1] EDAC MC: Ver: 3.0.0 [ 3.228743][ T1] Advanced Linux Sound Architecture Driver Initialized. [ 3.231505][ T1] Bluetooth: Core ver 2.22 [ 3.231701][ T1] NET: Registered PF_BLUETOOTH protocol family [ 3.231708][ T1] Bluetooth: HCI device and connection manager initialized [ 3.231795][ T1] Bluetooth: HCI socket layer initialized [ 3.231816][ T1] Bluetooth: L2CAP socket layer initialized [ 3.231924][ T1] Bluetooth: SCO socket layer initialized [ 3.232004][ T1] NET: Registered PF_ATMPVC protocol family [ 3.232011][ T1] NET: Registered PF_ATMSVC protocol family [ 3.232385][ T1] NetLabel: Initializing [ 3.232390][ T1] NetLabel: domain hash size = 128 [ 3.232396][ T1] NetLabel: protocols = UNLABELED CIPSOv4 CALIPSO [ 3.232802][ T1] NetLabel: unlabeled traffic allowed by default [ 3.244905][ T1] nfc: nfc_init: NFC Core ver 0.1 [ 3.245200][ T1] NET: Registered PF_NFC protocol family [ 3.245324][ T1] PCI: Using ACPI for IRQ routing [ 3.254145][ T1] pci 0000:00:05.0: vgaarb: setting as boot VGA device [ 3.254160][ T1] pci 0000:00:05.0: vgaarb: bridge control possible [ 3.254169][ T1] pci 0000:00:05.0: vgaarb: VGA device added: decodes=io+mem,owns=io+mem,locks=none [ 3.254189][ T1] vgaarb: loaded [ 3.256922][ T1] clocksource: Switched to clocksource kvm-clock [ 3.261369][ T1] VFS: Disk quotas dquot_6.6.0 [ 3.261369][ T1] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes) [ 3.262022][ T1] FS-Cache: Loaded [ 3.276350][ T1] CacheFiles: Loaded [ 3.277163][ T1] TOMOYO: 2.6.0 [ 3.277171][ T1] Mandatory Access Control activated. [ 3.277740][ T1] pnp: PnP ACPI init [ 3.302941][ T1] pnp: PnP ACPI: found 7 devices [ 3.355055][ T1] clocksource: acpi_pm: mask: 0xffffff max_cycles: 0xffffff, max_idle_ns: 2085701024 ns [ 3.356104][ T1] NET: Registered PF_INET protocol family [ 3.359608][ T1] IP idents hash table entries: 131072 (order: 8, 1048576 bytes, vmalloc) [ 3.368529][ T1] tcp_listen_portaddr_hash hash table entries: 4096 (order: 6, 294912 bytes, vmalloc) [ 3.370554][ T1] TCP established hash table entries: 65536 (order: 7, 524288 bytes, vmalloc) [ 3.376659][ T1] TCP bind bhash tables hash table entries: 65536 (order: 10, 5242880 bytes, vmalloc hugepage) [ 3.384705][ T1] TCP: Hash tables configured (established 65536 bind 65536) [ 3.387576][ T1] MPTCP token hash table entries: 8192 (order: 7, 720896 bytes, vmalloc) [ 3.390450][ T1] UDP hash table entries: 4096 (order: 7, 655360 bytes, vmalloc) [ 3.393821][ T1] UDP-Lite hash table entries: 4096 (order: 7, 655360 bytes, vmalloc) [ 3.395778][ T1] NET: Registered PF_UNIX/PF_LOCAL protocol family [ 3.402191][ T1] RPC: Registered named UNIX socket transport module. [ 3.402203][ T1] RPC: Registered udp transport module. [ 3.402209][ T1] RPC: Registered tcp transport module. [ 3.402215][ T1] RPC: Registered tcp NFSv4.1 backchannel transport module. [ 3.412169][ T1] NET: Registered PF_XDP protocol family [ 3.412215][ T1] pci_bus 0000:00: resource 4 [io 0x0000-0x0cf7 window] [ 3.412233][ T1] pci_bus 0000:00: resource 5 [io 0x0d00-0xffff window] [ 3.412247][ T1] pci_bus 0000:00: resource 6 [mem 0x000a0000-0x000bffff window] [ 3.412262][ T1] pci_bus 0000:00: resource 7 [mem 0xc0000000-0xfebfefff window] [ 3.413404][ T1] pci 0000:00:00.0: Limiting direct PCI/PCI transfers [ 3.413684][ T1] PCI: CLS 0 bytes, default 64 [ 3.419914][ T1] PCI-DMA: Using software bounce buffering for IO (SWIOTLB) [ 3.419923][ T1] software IO TLB: mapped [mem 0x00000000b5a00000-0x00000000b9a00000] (64MB) [ 3.419995][ T1] ACPI: bus type thunderbolt registered [ 3.435906][ T1] RAPL PMU: API unit is 2^-32 Joules, 0 fixed counters, 10737418240 ms ovfl timer [ 3.437011][ T59] kworker/u4:1 (59) used greatest stack depth: 24992 bytes left [ 3.473914][ T1] kvm: already loaded vendor module 'kvm_intel' [ 3.474037][ T1] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x1fb700c3c76, max_idle_ns: 440795286388 ns [ 3.474126][ T1] clocksource: Switched to clocksource tsc [ 3.482036][ T60] kworker/u4:4 (60) used greatest stack depth: 24856 bytes left [ 5.343482][ T1] Initialise system trusted keyrings [ 5.348187][ T1] workingset: timestamp_bits=40 max_order=21 bucket_order=0 [ 5.390285][ T1] zbud: loaded [ 5.399842][ T1] DLM installed [ 5.407496][ T1] squashfs: version 4.0 (2009/01/31) Phillip Lougher [ 5.419296][ T1] NFS: Registering the id_resolver key type [ 5.419355][ T1] Key type id_resolver registered [ 5.419360][ T1] Key type id_legacy registered [ 5.419740][ T1] nfs4filelayout_init: NFSv4 File Layout Driver Registering... [ 5.419813][ T1] nfs4flexfilelayout_init: NFSv4 Flexfile Layout Driver Registering... [ 5.419818][ T1] Installing knfsd (copyright (C) 1996 okir@monad.swb.de). [ 5.439718][ T1] Key type cifs.spnego registered [ 5.439855][ T1] Key type cifs.idmap registered [ 5.440401][ T1] ntfs: driver 2.1.32 [Flags: R/W]. [ 5.441754][ T1] ntfs3: Max link count 4000 [ 5.441760][ T1] ntfs3: Enabled Linux POSIX ACLs support [ 5.441763][ T1] ntfs3: Read-only LZX/Xpress compression included [ 5.443478][ T1] efs: 1.0a - http://aeschi.ch.eu.org/efs/ [ 5.443757][ T1] jffs2: version 2.2. (NAND) (SUMMARY) © 2001-2006 Red Hat, Inc. [ 5.450689][ T1] romfs: ROMFS MTD (C) 2007 Red Hat, Inc. [ 5.451584][ T1] QNX4 filesystem 0.2.3 registered. [ 5.452064][ T1] qnx6: QNX6 filesystem 1.0.0 registered. [ 5.455675][ T1] fuse: init (API version 7.36) [ 5.461408][ T1] orangefs_debugfs_init: called with debug mask: :none: :0: [ 5.462184][ T1] orangefs_init: module version upstream loaded [ 5.463865][ T1] JFS: nTxBlock = 8192, nTxLock = 65536 [ 5.485999][ T1] SGI XFS with ACLs, security attributes, realtime, quota, fatal assert, debug enabled [ 5.499518][ T1] 9p: Installing v9fs 9p2000 file system support [ 5.501381][ T1] NILFS version 2 loaded [ 5.501388][ T1] befs: version: 0.9.3 [ 5.502960][ T1] ocfs2: Registered cluster interface o2cb [ 5.503494][ T1] ocfs2: Registered cluster interface user [ 5.504881][ T1] OCFS2 User DLM kernel interface loaded [ 5.520811][ T1] gfs2: GFS2 installed [ 5.534477][ T1] ceph: loaded (mds proto 32) [ 5.548799][ T1] NET: Registered PF_ALG protocol family [ 5.548926][ T1] xor: automatically using best checksumming function avx [ 5.548955][ T1] async_tx: api initialized (async) [ 5.548973][ T1] Key type asymmetric registered [ 5.548993][ T1] Asymmetric key parser 'x509' registered [ 5.548998][ T1] Asymmetric key parser 'pkcs8' registered [ 5.549003][ T1] Key type pkcs7_test registered [ 5.552233][ T1] alg: self-tests for CTR-KDF (hmac(sha256)) passed [ 5.552532][ T1] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 240) [ 5.553276][ T1] io scheduler mq-deadline registered [ 5.553285][ T1] io scheduler kyber registered [ 5.554043][ T1] io scheduler bfq registered [ 5.579777][ T1] input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN:00/input/input0 [ 5.625342][ T1] ACPI: button: Power Button [PWRF] [ 5.626784][ T1] input: Sleep Button as /devices/LNXSYSTM:00/LNXSLPBN:00/input/input1 [ 5.628246][ T1] ACPI: button: Sleep Button [SLPF] [ 5.654360][ T1] ACPI: \_SB_.LNKC: Enabled at IRQ 11 [ 5.654474][ T1] virtio-pci 0000:00:03.0: virtio_pci: leaving for legacy driver [ 5.673409][ T1] ACPI: \_SB_.LNKD: Enabled at IRQ 10 [ 5.673505][ T1] virtio-pci 0000:00:04.0: virtio_pci: leaving for legacy driver [ 5.693873][ T1] ACPI: \_SB_.LNKB: Enabled at IRQ 10 [ 5.694253][ T1] virtio-pci 0000:00:06.0: virtio_pci: leaving for legacy driver [ 5.709359][ T1] virtio-pci 0000:00:07.0: virtio_pci: leaving for legacy driver [ 5.730860][ T1] virtio_balloon virtio2: init_vqs: add stat_vq failed [ 5.732479][ T1] virtio_balloon: probe of virtio2 failed with error -5 [ 6.071694][ T647] kworker/u4:3 (647) used greatest stack depth: 24736 bytes left [ 6.124247][ T1] N_HDLC line discipline registered with maxframe=4096 [ 6.124334][ T1] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled [ 6.125213][ T1] 00:03: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A [ 6.136740][ T1] 00:04: ttyS1 at I/O 0x2f8 (irq = 3, base_baud = 115200) is a 16550A [ 6.147329][ T1] 00:05: ttyS2 at I/O 0x3e8 (irq = 6, base_baud = 115200) is a 16550A [ 6.153471][ T1] 00:06: ttyS3 at I/O 0x2e8 (irq = 7, base_baud = 115200) is a 16550A [ 6.167280][ T1] Non-volatile memory driver v1.3 [ 286.264114][ T29] INFO: task swapper/0:1 blocked for more than 143 seconds. [ 286.265393][ T29] Not tainted 5.19.0-rc1-syzkaller-00011-g9886142c7a22 #0 [ 286.266797][ T29] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 286.268243][ T29] task:swapper/0 state:D stack:20376 pid: 1 ppid: 0 flags:0x00004000 [ 286.269893][ T29] Call Trace: [ 286.270498][ T29] [ 286.270980][ T29] __schedule+0x957/0xec0 [ 286.272171][ T29] ? __sched_text_start+0x8/0x8 [ 286.273226][ T29] ? __mutex_trylock_common+0x8e/0x2f0 [ 286.274409][ T29] ? do_raw_spin_unlock+0x134/0x8a0 [ 286.275427][ T29] schedule+0xeb/0x1b0 [ 286.276311][ T29] schedule_preempt_disabled+0xf/0x20 [ 286.278577][ T29] __mutex_lock_common+0xecf/0x26c0 [ 286.279594][ T29] ? hwrng_register+0x3bf/0x680 [ 286.280799][ T29] ? mutex_lock_io_nested+0x60/0x60 [ 286.281806][ T29] ? set_current_rng+0x3aa/0x5d0 [ 286.282748][ T29] ? hwrng_register+0x680/0x680 [ 286.284847][ T29] mutex_lock_nested+0x17/0x20 [ 286.290329][ T29] hwrng_register+0x3bf/0x680 [ 286.295184][ T29] virtrng_scan+0x3e/0x90 [ 286.299883][ T29] ? virtrng_probe+0x20/0x20 [ 286.304813][ T29] virtio_dev_probe+0xa03/0xba0 [ 286.309747][ T29] ? virtio_uevent+0xa0/0xa0 [ 286.314611][ T29] call_driver_probe+0x96/0x250 [ 286.319609][ T29] really_probe+0x220/0x940 [ 286.324377][ T29] __driver_probe_device+0x1f4/0x3f0 [ 286.329805][ T29] driver_probe_device+0x50/0x240 [ 286.334975][ T29] __driver_attach+0x35f/0x5a0 [ 286.339751][ T29] ? driver_attach+0x40/0x40 [ 286.344474][ T29] bus_for_each_dev+0x188/0x1f0 [ 286.349449][ T29] ? bus_remove_file+0xd0/0xd0 [ 286.354287][ T29] ? do_raw_spin_unlock+0x134/0x8a0 [ 286.359511][ T29] bus_add_driver+0x32f/0x600 [ 286.364289][ T29] driver_register+0x2e9/0x3e0 [ 286.369060][ T29] ? hwrng_modinit+0xef/0xef [ 286.373680][ T29] do_one_initcall+0xbd/0x2b0 [ 286.378452][ T29] ? IS_ERR_OR_NULL+0x20/0x20 [ 286.383140][ T29] do_initcall_level+0x168/0x218 [ 286.388165][ T29] do_initcalls+0x4b/0x8c [ 286.392517][ T29] kernel_init_freeable+0x43a/0x5c3 [ 286.397791][ T29] ? report_meminit+0x64/0x64 [ 286.402471][ T29] ? do_raw_spin_unlock+0x134/0x8a0 [ 286.407715][ T29] ? _raw_spin_unlock_irq+0x1f/0x40 [ 286.412977][ T29] ? lockdep_hardirqs_on+0x95/0x140 [ 286.418378][ T29] ? rest_init+0x270/0x270 [ 286.422829][ T29] kernel_init+0x19/0x2b0 [ 286.427358][ T29] ? rest_init+0x270/0x270 [ 286.432095][ T29] ret_from_fork+0x1f/0x30 [ 286.436801][ T29] [ 286.439860][ T29] [ 286.439860][ T29] Showing all locks held in the system: [ 286.447638][ T29] 2 locks held by swapper/0/1: [ 286.452396][ T29] #0: ffff88801bf51170 (&dev->mutex){....}-{3:3}, at: __driver_attach+0x353/0x5a0 [ 286.461820][ T29] #1: ffffffff8d24c948 (reading_mutex){+.+.}-{3:3}, at: hwrng_register+0x3bf/0x680 [ 286.471316][ T29] 2 locks held by kworker/u4:0/8: [ 286.476385][ T29] #0: ffff888011c69138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x796/0xd10 [ 286.487552][ T29] #1: ffffc900000d7d00 ((work_completion)(&(&kfence_timer)->work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0xd10 [ 286.499647][ T29] 1 lock held by khungtaskd/29: [ 286.504526][ T29] #0: ffffffff8cb1eb60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30 [ 286.514159][ T29] 1 lock held by hwrng/756: [ 286.518843][ T29] #0: ffffffff8d24c948 (reading_mutex){+.+.}-{3:3}, at: hwrng_fillfn+0xec/0x470 [ 286.528518][ T29] [ 286.530876][ T29] ============================================= [ 286.530876][ T29] [ 286.539506][ T29] Kernel panic - not syncing: hung_task: blocked tasks [ 286.547107][ T29] CPU: 1 PID: 29 Comm: khungtaskd Not tainted 5.19.0-rc1-syzkaller-00011-g9886142c7a22 #0 [ 286.549468][ T29] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 286.549468][ T29] Call Trace: [ 286.549468][ T29] [ 286.549468][ T29] dump_stack_lvl+0x1e3/0x2cb [ 286.549468][ T29] ? bfq_pos_tree_add_move+0x436/0x436 [ 286.549468][ T29] ? panic+0x76e/0x76e [ 286.549468][ T29] ? vscnprintf+0x59/0x80 [ 286.549468][ T29] panic+0x312/0x76e [ 286.549468][ T29] ? printk_prefer_direct_exit+0x4b/0x80 [ 286.549468][ T29] ? fb_is_primary_device+0xcc/0xcc [ 286.549468][ T29] ? panic+0x76e/0x76e [ 286.549468][ T29] ? debug_show_all_locks+0x24b/0x2a0 [ 286.549468][ T29] watchdog+0xd5d/0xd60 [ 286.549468][ T29] kthread+0x266/0x300 [ 286.549468][ T29] ? hungtask_pm_notify+0x50/0x50 [ 286.549468][ T29] ? kthread_blkcg+0xd0/0xd0 [ 286.549468][ T29] ret_from_fork+0x1f/0x30 [ 286.549468][ T29] [ 286.549468][ T29] Kernel Offset: disabled [ 286.549468][ T29] Rebooting in 86400 seconds..