WARNING in __alloc_workqueue input: Power Button as /devices/platform/LNXPWRBN:00/input/input0 ACPI: button: Power Button [PWRF] input: Sleep Button as /devices/platform/LNXSLPBN:00/input/input1 ACPI: button: Sleep Button [SLPF] ioatdma: Intel(R) QuickData Technology Driver 5.00 ACPI: \_SB_.LNKC: Enabled at IRQ 11 virtio-pci 0000:00:03.0: virtio_pci: leaving for legacy driver ACPI: \_SB_.LNKD: Enabled at IRQ 10 virtio-pci 0000:00:04.0: virtio_pci: leaving for legacy driver ACPI: \_SB_.LNKB: Enabled at IRQ 10 virtio-pci 0000:00:06.0: virtio_pci: leaving for legacy driver virtio-pci 0000:00:07.0: virtio_pci: leaving for legacy driver N_HDLC line discipline registered with maxframe=4096 Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled 00:02: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A 00:03: ttyS1 at I/O 0x2f8 (irq = 3, base_baud = 115200) is a 16550A 00:04: ttyS2 at I/O 0x3e8 (irq = 6, base_baud = 115200) is a 16550A 00:05: ttyS3 at I/O 0x2e8 (irq = 7, base_baud = 115200) is a 16550A Non-volatile memory driver v1.3 usbcore: registered new interface driver xillyusb ACPI: bus type drm_connector registered [drm] Initialized vgem 1.0.0 for vgem on minor 0 [drm] Initialized vkms 1.0.0 for vkms on minor 1 Console: switching to colour frame buffer device 128x48 faux_driver vkms: [drm] fb0: vkmsdrmfb frame buffer device usbcore: registered new interface driver udl usbcore: registered new interface driver gm12u320 usbcore: registered new interface driver gud brd: module loaded loop: module loaded zram: Added device: zram0 null_blk: disk nullb0 created null_blk: module loaded Guest personality initialized and is inactive VMCI host device registered (name=vmci, major=10, minor=267) Initialized host personality usbcore: registered new interface driver rtsx_usb usbcore: registered new interface driver viperboard usbcore: registered new interface driver dln2 usbcore: registered new interface driver pn533_usb nfcsim 0.2 initialized usbcore: registered new interface driver port100 usbcore: registered new interface driver nfcmrvl Loading iSCSI transport class v2.0-870. virtio_scsi virtio0: 1/0/0 default/read/poll queues scsi host0: Virtio SCSI HBA blk-mq: reduced tag depth to 10240 st: Version 20160209, fixed bufsize 32768, s/g segs 256 ------------[ cut here ]------------ workqueue: nvme_tcp_wq is using neither WQ_PERCPU or WQ_UNBOUND. Setting WQ_PERCPU. WARNING: kernel/workqueue.c:5856 at __alloc_workqueue+0x1d02/0x2070 kernel/workqueue.c:5855, CPU#1: swapper/0/1 Modules linked in: CPU: 1 UID: 0 PID: 1 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT_{RT,(full)} Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 RIP: 0010:__alloc_workqueue+0x1d07/0x2070 kernel/workqueue.c:5855 Code: e9 36 f9 ff ff e8 29 8a 37 00 e9 05 fb ff ff e8 1f 8a 37 00 e9 92 fb ff ff e8 15 8a 37 00 48 8d 3d ce 2f 02 0e 48 8b 74 24 20 <67> 48 0f b9 3a 81 cd 00 01 00 00 e9 88 e5 ff ff e8 f4 89 37 00 48 RSP: 0000:ffffc900000677a8 EFLAGS: 00010293 RAX: ffffffff818dbc1b RBX: 0000000000000000 RCX: ffff88801cec5d00 RDX: 0000000000000000 RSI: ffff888026200168 RDI: ffffffff8f8febf0 RBP: 0000000000000058 R08: ffff88801cec5d00 R09: 0000000000000002 R10: 0000000000000100 R11: 0000000000000102 R12: dffffc0000000000 R13: ffff888026200000 R14: ffffc900000678c0 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff888125fcb000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000000ddb8000 CR4: 00000000003526f0 Call Trace: alloc_workqueue_va kernel/workqueue.c:5950 [inline] alloc_workqueue_noprof+0xe3/0x210 kernel/workqueue.c:5966 nvme_tcp_init_module+0x27/0x100 drivers/nvme/host/tcp.c:3050 do_one_initcall+0x250/0x870 init/main.c:1347 do_initcall_level+0x104/0x190 init/main.c:1409 do_initcalls+0x59/0xa0 init/main.c:1425 kernel_init_freeable+0x2a6/0x3e0 init/main.c:1658 kernel_init+0x1d/0x1d0 init/main.c:1548 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 ---------------- Code disassembly (best guess): 0: e9 36 f9 ff ff jmp 0xfffff93b 5: e8 29 8a 37 00 call 0x378a33 a: e9 05 fb ff ff jmp 0xfffffb14 f: e8 1f 8a 37 00 call 0x378a33 14: e9 92 fb ff ff jmp 0xfffffbab 19: e8 15 8a 37 00 call 0x378a33 1e: 48 8d 3d ce 2f 02 0e lea 0xe022fce(%rip),%rdi # 0xe022ff3 25: 48 8b 74 24 20 mov 0x20(%rsp),%rsi * 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction 2f: 81 cd 00 01 00 00 or $0x100,%ebp 35: e9 88 e5 ff ff jmp 0xffffe5c2 3a: e8 f4 89 37 00 call 0x378a33 3f: 48 rex.W failed to run ["ssh" "-p" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "IdentitiesOnly=yes" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "root@10.128.1.149" "pwd"]: exit status 255 ssh: connect to host 10.128.1.149 port 22: Connection timed out Pseudo-terminal will not be allocated because stdin is not a terminal. Warning: Permanently added '[us-central1-ssh-serialport.googleapis.com]:9600' (ECDSA) to the list of known hosts. 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 e758ef56-42d4-f37a-8983-cd929e7d1704 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 0x000f25d0: 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 syzkaller (syzkaller@syzkaller) (Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8) #0 SMP PREEMPT_RT 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/CPU: Model not found in latest microcode list [ 0.000000][ T0] BIOS-provided physical RAM map: [ 0.000000][ T0] BIOS-e820: [mem 0x0000000000000000-0x000000000009fbff] System RAM [ 0.000000][ T0] BIOS-e820: [mem 0x000000000009fc00-0x000000000009ffff] device reserved [ 0.000000][ T0] BIOS-e820: [gap 0x00000000000a0000-0x00000000000effff] [ 0.000000][ T0] BIOS-e820: [mem 0x00000000000f0000-0x00000000000fffff] device reserved [ 0.000000][ T0] BIOS-e820: [mem 0x0000000000100000-0x00000000bfffcfff] System RAM [ 0.000000][ T0] BIOS-e820: [mem 0x00000000bfffd000-0x00000000bfffffff] device reserved [ 0.000000][ T0] BIOS-e820: [gap 0x00000000c0000000-0x00000000fffbbfff] [ 0.000000][ T0] BIOS-e820: [mem 0x00000000fffbc000-0x00000000ffffffff] device reserved [ 0.000000][ T0] BIOS-e820: [mem 0x0000000100000000-0x000000023fffffff] System RAM [ 0.000000][ T0] printk: legacy bootconsole [earlyser0] enabled [ 0.000000][ T0] ERROR: earlyprintk= earlyser already used [ 0.000000][ T0] ERROR: earlyprintk= earlyser already used [ 0.000000][ T0] Hash pointers mode set to never. [ 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] APIC: Static calls initialized [ 0.000000][ T0] DMI: SMBIOS 2.4 present. [ 0.000000][ T0] DMI: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 0.000000][ T0] DMI: Memory slots populated: 1/1 [ 0.000000][ T0] Hypervisor detected: KVM [ 0.000000][ T0] last_pfn = 0xbfffd max_arch_pfn = 0x400000000 [ 0.000000][ T0] kvm-clock: Using msrs 4b564d01 and 4b564d00 [ 0.000006][ T0] kvm-clock: using sched offset of 8400317888 cycles [ 0.000015][ T0] clocksource: kvm-clock: mask: 0xffffffffffffffff max_cycles: 0x1cd42e4dffb, max_idle_ns: 881590591483 ns [ 0.000036][ T0] tsc: Detected 2200.206 MHz processor [ 0.004053][ T0] last_pfn = 0x240000 max_arch_pfn = 0x400000000 [ 0.004109][ T0] MTRR map: 4 entries (3 fixed + 1 variable; max 19), built from 8 variable MTRRs [ 0.004121][ T0] x86/PAT: Configuration [0-7]: WB WC UC- UC WB WP UC- WT [ 0.004188][ T0] last_pfn = 0xbfffd max_arch_pfn = 0x400000000 [ 0.008973][ T0] found SMP MP-table at [mem 0x000f2890-0x000f289f] [ 0.009001][ T0] Using GB pages for direct mapping [ 0.012758][ T0] ACPI: Early table checksum verification disabled [ 0.012782][ T0] ACPI: RSDP 0x00000000000F2610 000014 (v00 Google) [ 0.012799][ T0] ACPI: RSDT 0x00000000BFFFFFB0 000038 (v01 Google GOOGRSDT 00000001 GOOG 00000001) [ 0.012821][ T0] ACPI: FACP 0x00000000BFFFF370 0000F4 (v02 Google GOOGFACP 00000001 GOOG 00000001) [ 0.012846][ T0] ACPI: DSDT 0x00000000BFFFD900 001A64 (v01 Google GOOGDSDT 00000001 GOOG 00000001) [ 0.012864][ T0] ACPI: FACS 0x00000000BFFFD8C0 000040 [ 0.012878][ T0] ACPI: FACS 0x00000000BFFFD8C0 000040 [ 0.012892][ T0] ACPI: SRAT 0x00000000BFFFFEA0 0000C8 (v03 Google GOOGSRAT 00000001 GOOG 00000001) [ 0.012910][ T0] ACPI: APIC 0x00000000BFFFFDF0 000076 (v05 Google GOOGAPIC 00000001 GOOG 00000001) [ 0.012928][ T0] ACPI: SSDT 0x00000000BFFFF470 000980 (v01 Google GOOGSSDT 00000001 GOOG 00000001) [ 0.012947][ T0] ACPI: WAET 0x00000000BFFFFE70 000028 (v01 Google GOOGWAET 00000001 GOOG 00000001) [ 0.012962][ T0] ACPI: Reserving FACP table memory at [mem 0xbffff370-0xbffff463] [ 0.012970][ T0] ACPI: Reserving DSDT table memory at [mem 0xbfffd900-0xbffff363] [ 0.012977][ T0] ACPI: Reserving FACS table memory at [mem 0xbfffd8c0-0xbfffd8ff] [ 0.012985][ T0] ACPI: Reserving FACS table memory at [mem 0xbfffd8c0-0xbfffd8ff] [ 0.012991][ T0] ACPI: Reserving SRAT table memory at [mem 0xbffffea0-0xbfffff67] [ 0.012998][ T0] ACPI: Reserving APIC table memory at [mem 0xbffffdf0-0xbffffe65] [ 0.013005][ T0] ACPI: Reserving SSDT table memory at [mem 0xbffff470-0xbffffdef] [ 0.013012][ T0] ACPI: Reserving WAET table memory at [mem 0xbffffe70-0xbffffe97] [ 0.013149][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x00000000-0x0009ffff] [ 0.013159][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x00100000-0xbfffffff] [ 0.013168][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x100000000-0x23fffffff] [ 0.013179][ T0] NUMA: Node 0 [mem 0x00001000-0x0009ffff] + [mem 0x00100000-0xbfffffff] -> [mem 0x00001000-0xbfffffff] [ 0.013192][ T0] NUMA: Node 0 [mem 0x00001000-0xbfffffff] + [mem 0x100000000-0x23fffffff] -> [mem 0x00001000-0x23fffffff] [ 0.013215][ T0] Faking node 0 at [mem 0x0000000000001000-0x0000000140000fff] (5120MB) [ 0.013224][ T0] Faking node 1 at [mem 0x0000000140001000-0x000000023fffffff] (4095MB) [ 0.013307][ T0] NODE_DATA(0) allocated [mem 0x13fffac80-0x140000fff] [ 0.014068][ T0] NODE_DATA(1) allocated [mem 0x23fff6c80-0x23fffcfff] [ 0.301989][ T0] KernelAddressSanitizer initialized (generic) [ 0.302482][ T0] ACPI: PM-Timer IO Port: 0xb008 [ 0.302516][ T0] ACPI: LAPIC_NMI (acpi_id[0xff] dfl dfl lint[0x1]) [ 0.302621][ T0] IOAPIC[0]: apic_id 0, version 17, address 0xfec00000, GSI 0-23 [ 0.302636][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 high level) [ 0.302646][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level) [ 0.302654][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 high level) [ 0.302662][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 high level) [ 0.302682][ T0] ACPI: Using ACPI (MADT) for SMP configuration information [ 0.302693][ T0] CPU topo: Max. logical packages: 1 [ 0.302698][ T0] CPU topo: Max. logical nodes: 1 [ 0.302702][ T0] CPU topo: Num. nodes per package: 1 [ 0.302711][ T0] CPU topo: Max. logical dies: 1 [ 0.302721][ T0] CPU topo: Max. dies per package: 1 [ 0.302735][ T0] CPU topo: Max. threads per core: 2 [ 0.302740][ T0] CPU topo: Num. cores per package: serialport: Connected to syzkaller.us-central1-c.ci-upstream-linux-next-kasan-gce-root-test-job-parallel-2 port 1 (session ID: aa20e0eff39ba8de93267b9ad9aba83ce5b6645aee6308b5c077e056ad7e5380, active connections: 1). 1 [ 0.302744][ T0] CPU topo: Num. threads per package: 2 [ 0.302748][ T0] CPU topo: Allowing 2 present CPUs plus 0 hotplug CPUs [ 0.302931][ T0] PM: hibernation: Registered nosave memory: [mem 0x00000000-0x00000fff] [ 0.302941][ T0] PM: hibernation: Registered nosave memory: [mem 0x0009f000-0x000fffff] [ 0.302950][ T0] PM: hibernation: Registered nosave memory: [mem 0xbfffd000-0xffffffff] [ 0.302973][ T0] [gap 0xc0000000-0xfffbbfff] available for PCI devices [ 0.302980][ T0] Booting paravirtualized kernel on KVM [ 0.302991][ T0] clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns [ 0.433117][ T0] Zone ranges: [ 0.433127][ T0] DMA [mem 0x0000000000001000-0x0000000000ffffff] [ 0.433140][ T0] DMA32 [mem 0x0000000001000000-0x00000000ffffffff] [ 0.433148][ T0] Normal [mem 0x0000000100000000-0x000000023fffffff] [ 0.433157][ T0] Device empty [ 0.433162][ T0] Movable zone start for each node [ 0.433165][ T0] Early memory node ranges [ 0.433168][ T0] node 0: [mem 0x0000000000001000-0x000000000009efff] [ 0.433176][ T0] node 0: [mem 0x0000000000100000-0x00000000bfffcfff] [ 0.433184][ T0] node 0: [mem 0x0000000100000000-0x0000000140000fff] [ 0.433191][ T0] node 1: [mem 0x0000000140001000-0x000000023fffffff] [ 0.433201][ T0] Initmem setup node 0 [mem 0x0000000000001000-0x0000000140000fff] [ 0.433220][ T0] Initmem setup node 1 [mem 0x0000000140001000-0x000000023fffffff] [ 0.433271][ T0] On node 0, zone DMA: 1 pages in unavailable ranges [ 0.433553][ T0] On node 0, zone DMA: 97 pages in unavailable ranges [ 0.506053][ T0] On node 0, zone Normal: 3 pages in unavailable ranges [ 0.578229][ T0] setup_percpu: NR_CPUS:8 nr_cpumask_bits:2 nr_cpu_ids:2 nr_node_ids:2 [ 0.578971][ T0] percpu: Embedded 71 pages/cpu s253896 r8192 d28728 u1048576 [ 0.579154][ T0] kvm-guest: PV spinlocks enabled [ 0.579166][ T0] PV qspinlock hash table entries: 256 (order: 0, 4096 bytes, linear) [ 0.579187][ 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 rcupdate.rcu_cpu_stall_cputime=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 coredump_filter=0xffff root=/dev/sda console=ttyS0 vsyscall=native numa=fake=2 kvm-intel.nested=1 spec_store_bypass_disable=prctl nopcid vivid.n_devs=64 vivid.multiplanar=1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2 netrom.nr_ndevs=32 rose.rose_ndevs=32 smp.csd_lock_timeout=100000 watchdog_thresh=55 workqueue.watchdog_thresh=140 sysctl.net.core.netdev_unregister_timeout_secs=140 dummy_hcd.num=32 max_loop=32 nbds_max=32 \ [ 0.579223][ T0] Kernel command line: comedi.comedi_num_legacy_minors=4 panic_on_warn=1 BOOT_IMAGE=/boot/bzImage root=/dev/sda1 console=ttyS0 [ 0.583841][ T0] Unknown kernel command line parameters "nbds_max=32", will be passed to user space. [ 0.583925][ T0] random: crng init done [ 0.583930][ T0] printk: log buffer data + meta data: 262144 + 917504 = 1179648 bytes [ 0.584135][ T0] software IO TLB: area num 2. [ 0.611390][ T0] Fallback order for Node 0: 0 1 [ 0.611412][ T0] Fallback order for Node 1: 1 0 [ 0.611426][ T0] Built 2 zonelists, mobility grouping on. Total pages: 2097051 [ 0.611435][ T0] Policy zone: Normal [ 0.612101][ T0] mem auto-init: stack:all(zero), heap alloc:on, heap free:off [ 0.612111][ T0] stackdepot: allocating hash table via alloc_large_system_hash [ 0.612123][ T0] stackdepot hash table entries: 1048576 (order: 12, 16777216 bytes, linear) [ 0.616552][ T0] stackdepot: allocating space for 8192 stack pools via memblock [ 1.332994][ T0] ********************************************************** [ 1.333006][ T0] ** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE ** [ 1.333010][ T0] ** ** [ 1.333014][ T0] ** This system shows unhashed kernel memory addresses ** [ 1.333018][ T0] ** via the console, logs, and other interfaces. This ** [ 1.333022][ T0] ** might reduce the security of your system. ** [ 1.333026][ T0] ** ** [ 1.333030][ T0] ** If you see this message and you are not debugging ** [ 1.333034][ T0] ** the kernel, report this immediately to your system ** [ 1.333038][ T0] ** administrator! ** [ 1.333042][ T0] ** ** [ 1.333046][ T0] ** Use hash_pointers=always to force this mode off ** [ 1.333050][ T0] ** ** [ 1.333054][ T0] ** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE ** [ 1.333058][ T0] ********************************************************** [ 1.336476][ T0] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=2 [ 1.465383][ T0] allocated 167772160 bytes of page_ext [ 1.465424][ T0] Node 0, zone DMA: page owner found early allocated 0 pages [ 1.479797][ T0] Node 0, zone DMA32: page owner found early allocated 21120 pages [ 1.484658][ T0] Node 0, zone Normal: page owner found early allocated 131 pages [ 1.496054][ T0] Node 1, zone Normal: page owner found early allocated 19848 pages [ 1.496540][ T0] Kernel/User page tables isolation: enabled [ 1.498783][ T0] Dynamic Preempt: full [ 1.499959][ T0] Running RCU self tests [ 1.499965][ T0] Running RCU synchronous self tests [ 1.499969][ T0] rcu: Preemptible hierarchical RCU implementation. [ 1.499974][ T0] rcu: RCU lockdep checking is enabled. [ 1.499977][ T0] rcu: RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=2. [ 1.499984][ T0] rcu: RCU priority boosting: priority 1 delay 500 ms. [ 1.499990][ T0] rcu: RCU callback double-/use-after-free debug is enabled. [ 1.499994][ T0] rcu: RCU_SOFTIRQ processing moved to rcuc kthreads. [ 1.499998][ T0] rcu: RCU debug extended QS entry/exit. [ 1.500002][ T0] No expedited grace period (rcu_normal_after_boot). [ 1.500006][ T0] Trampoline variant of Tasks RCU enabled. [ 1.500010][ T0] Tracing variant of Tasks RCU enabled. [ 1.500013][ T0] rcu: RCU calculated value of scheduler-enlistment delay is 10 jiffies. [ 1.500019][ T0] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2 [ 1.500199][ T0] Running RCU synchronous self tests [ 1.500235][ T0] RCU Tasks: Setting shift to 1 and lim to 1 rcu_task_cb_adjust=1 rcu_task_cpu_ids=2. [ 1.677779][ T0] NR_IRQS: 4352, nr_irqs: 440, preallocated irqs: 16 [ 1.678930][ T0] rcu: srcu_init: Setting srcu_struct sizes based on contention. [ 1.679729][ T0] kfence: initialized - using 2097152 bytes for 255 objects at 0xffff88823be00000-0xffff88823c000000 [ 1.681243][ T0] Console: colour VGA+ 80x25 [ 1.906256][ T0] printk: legacy console [ttyS0] enabled [ 1.906267][ T0] printk: legacy bootconsole [earlyser0] disabled [ 1.906345][ T0] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar [ 1.906350][ T0] ... MAX_LOCKDEP_SUBCLASSES: 8 [ 1.906355][ T0] ... MAX_LOCK_DEPTH: 48 [ 1.906359][ T0] ... MAX_LOCKDEP_KEYS: 8192 [ 1.906363][ T0] ... CLASSHASH_SIZE: 4096 [ 1.906368][ T0] ... MAX_LOCKDEP_ENTRIES: 1048576 [ 1.906372][ T0] ... MAX_LOCKDEP_CHAINS: 1048576 [ 1.906377][ T0] ... CHAINHASH_SIZE: 524288 [ 1.906381][ T0] memory used by lock dependency info: 106625 kB [ 1.906386][ T0] memory used for stack traces: 8320 kB [ 1.906390][ T0] per task-struct memory footprint: 1920 bytes [ 1.906723][ T0] ACPI: Core revision 20260408 [ 1.908134][ T0] APIC: Switch to symmetric I/O mode setup [ 1.908695][ T0] x2apic enabled [ 1.913567][ T0] APIC: Switched APIC routing to: physical x2apic [ 1.921552][ T0] ..TIMER: vector=0x30 apic1=0 pin1=0 apic2=-1 pin2=-1 [ 1.921865][ T0] clocksource: tsc-early: mask: 0xffffffffffffffff max_cycles: 0x1fb6f578070, max_idle_ns: 440795229043 ns [ 1.921913][ T0] Calibrating delay loop (skipped) preset value.. 4400.41 BogoMIPS (lpj=22002060) [ 1.922620][ T0] Last level iTLB entries: 4KB 64, 2MB 8, 4MB 8 [ 1.922626][ T0] Last level dTLB entries: 4KB 64, 2MB 32, 4MB 32, 1GB 4 [ 1.922684][ T0] mitigations: Enabled attack vectors: user_kernel, user_user, guest_host, guest_guest, SMT mitigations: auto [ 1.922702][ T0] Speculative Store Bypass: Mitigation: Speculative Store Bypass disabled via prctl [ 1.922711][ T0] Spectre V2 : Mitigation: IBRS [ 1.922717][ T0] RETBleed: Mitigation: IBRS [ 1.922723][ T0] ITS: Mitigation: Aligned branch/return thunks [ 1.922729][ T0] Spectre V2 : User space: Mitigation: STIBP via prctl [ 1.922735][ T0] MDS: Mitigation: Clear CPU buffers [ 1.922741][ T0] TAA: Mitigation: Clear CPU buffers [ 1.922747][ T0] MMIO Stale Data: Vulnerable: Clear CPU buffers attempted, no microcode [ 1.922752][ T0] Spectre V1 : Mitigation: usercopy/swapgs barriers and __user pointer sanitization [ 1.922760][ T0] Spectre V2 : Spectre v2 / SpectreRSB: Filling RSB on context switch and VMEXIT [ 1.922776][ T0] Spectre V2 : mitigation: Enabling conditional Indirect Branch Prediction Barrier [ 1.922815][ T0] active return thunk: its_return_thunk [ 1.922829][ T0] Spectre V2 : Spectre BHI mitigation: SW BHB clearing on syscall and VM exit [ 1.922880][ T0] x86/fpu: Supporting XSAVE feature 0x001: 'x87 floating point registers' [ 1.922887][ T0] x86/fpu: Supporting XSAVE feature 0x002: 'SSE registers' [ 1.922892][ T0] x86/fpu: Supporting XSAVE feature 0x004: 'AVX registers' [ 1.922898][ T0] x86/fpu: xstate_offset[2]: 576, xstate_sizes[2]: 256 [ 1.922906][ T0] x86/fpu: Enabled xstate features 0x7, context size is 832 bytes, using 'standard' format. [ 2.199405][ T0] pid_max: default: 32768 minimum: 301 [ 2.201188][ T0] landlock: Up and running. [ 2.201199][ T0] Yama: becoming mindful. [ 2.201646][ T0] TOMOYO Linux initialized [ 2.202954][ T0] AppArmor: AppArmor initialized [ 2.205370][ T0] LSM support for eBPF active [ 2.211769][ T0] Dentry cache hash table entries: 1048576 (order: 11, 8388608 bytes, vmalloc hugepage) [ 2.214679][ T0] Inode-cache hash table entries: 524288 (order: 10, 4194304 bytes, vmalloc hugepage) [ 2.215077][ T0] Mount-cache hash table entries: 16384 (order: 5, 131072 bytes, vmalloc) [ 2.215248][ T0] Mountpoint-cache hash table entries: 16384 (order: 5, 131072 bytes, vmalloc) [ 2.217999][ T0] VFS: Finished mounting rootfs on nullfs [ 2.223096][ T0] Running RCU synchronous self tests [ 2.223107][ T0] Running RCU synchronous self tests [ 2.344392][ T1] smpboot: CPU0: Intel(R) Xeon(R) CPU @ 2.20GHz (family: 0x6, model: 0x4f, stepping: 0x0) [ 2.348994][ T1] Performance Events: unsupported CPU family 6 model 79 no PMU driver, software events only. [ 2.349132][ T1] signal: max sigframe size: 1776 [ 2.352559][ T1] rcu: Hierarchical SRCU implementation. [ 2.352568][ T1] rcu: Max phase no-delay instances is 1000. [ 2.412002][ T1] Timer migration: 1 hierarchy levels; 8 children per group; 0 crossnode level [ 2.499384][ T1] NMI watchdog: Perf NMI watchdog permanently disabled [ 2.500485][ T1] smp: Bringing up secondary CPUs ... [ 2.514347][ T1] smpboot: x86: Booting SMP configuration: [ 2.514357][ T1] .... node #0, CPUs: #1 [ 2.514755][ 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. [ 2.514755][ 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. [ 2.514755][ T1] MMIO Stale Data CPU bug present and SMT on, data leak possible. See https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/processor_mmio_stale_data.html for more details. [ 2.514755][ T1] smp: Brought up 2 nodes, 2 CPUs [ 2.514755][ T1] smpboot: Total of 2 processors activated (8800.82 BogoMIPS) [ 2.514831][ T1] Memory: 6466276K/8388204K available (167204K kernel code, 29636K rwdata, 39784K rodata, 25488K init, 129268K bss, 1733796K reserved, 0K cma-reserved) [ 2.534726][ T1] devtmpfs: initialized [ 2.534726][ T1] x86/mm: Memory block size: 128MB [ 2.606985][ T1] Running RCU synchronous self tests [ 2.607043][ T1] Running RCU synchronous self tests [ 2.607165][ T1] Running RCU Tasks wait API self tests [ 2.614623][ T1] Running RCU Tasks Trace wait API self tests [ 2.614740][ T1] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns [ 2.614740][ T1] posixtimers hash table entries: 1024 (order: 6, 139264 bytes, vmalloc) [ 2.614740][ T1] futex hash table entries: 256 (49152 bytes on 2 NUMA nodes, total 96 KiB, linear). [ 2.614995][ T1] xor: automatically using best checksumming function avx [ 2.620153][ T1] PM: RTC time: 17:12:55, date: 2026-05-30 [ 2.636210][ T1] NET: Registered PF_NETLINK/PF_ROUTE protocol family [ 2.643883][ T1] audit: initializing netlink subsys (disabled) [ 2.644004][ T38] audit: type=2000 audit(1780161175.729:1): state=initialized audit_enabled=0 res=1 [ 2.655878][ T1] thermal_sys: Registered thermal governor 'step_wise' [ 2.656611][ T1] cpuidle: using governor menu [ 2.657419][ T1] NET: Registered PF_QIPCRTR protocol family [ 2.661938][ T1] Freeing SMP alternatives memory: 128K [ 2.662074][ T10] Callback from call_rcu_tasks_trace() invoked. [ 2.666126][ T1] dca service started, version 1.12.1 [ 2.666404][ T1] PCI: Using configuration type 1 for base access [ 2.692155][ T1] HugeTLB: registered 1.00 GiB page size, pre-allocated 0 pages [ 2.692172][ T1] HugeTLB: 16380 KiB vmemmap can be freed for a 1.00 GiB page [ 2.692187][ T1] HugeTLB: registered 2.00 MiB page size, pre-allocated 0 pages [ 2.692197][ T1] HugeTLB: 28 KiB vmemmap can be freed for a 2.00 MiB page [ 2.737411][ T1] raid6: using avx2x2 recovery algorithm [ 2.737427][ T1] raid6: skipped pq benchmark and selected avx2x4 [ 2.742609][ T1] ACPI: Added _OSI(Module Device) [ 2.742624][ T1] ACPI: Added _OSI(Processor Device) [ 2.742634][ T1] ACPI: Added _OSI(Processor Aggregator Device) [ 2.989526][ T1] ACPI: 2 ACPI AML tables successfully acquired and loaded [ 3.046818][ T1] ACPI: \_SB_: platform _OSC: OS support mask [000e7eee] [ 3.078660][ T1] ACPI: Interpreter enabled [ 3.079569][ T1] ACPI: PM: (supports S0 S3 S4 S5) [ 3.079641][ T1] ACPI: Using IOAPIC for interrupt routing [ 3.080361][ T1] PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug [ 3.080374][ T1] PCI: Ignoring E820 reservations for host bridge windows [ 3.087994][ T1] ACPI: Enabled 16 GPEs in block 00 to 0F [ 3.440828][ T1] ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-ff]) [ 3.440959][ T1] acpi PNP0A03:00: _OSC: OS supports [ASPM ClockPM Segments MSI HPX-Type3] [ 3.440980][ T1] acpi PNP0A03:00: _OSC: not requesting OS control; OS requires [ExtendedConfig ASPM ClockPM MSI] [ 3.441534][ T1] acpi PNP0A03:00: _OSC: platform retains control of PCIe features (AE_ERROR) [ 3.442461][ T1] acpi PNP0A03:00: fail to add MMCONFIG information, can't access extended configuration space under this bridge [ 3.472987][ T1] PCI host bridge to bus 0000:00 [ 3.473005][ T1] pci_bus 0000:00: Unknown NUMA node; performance will be reduced [ 3.473588][ T1] pci_bus 0000:00: root bus resource [io 0x0000-0x0cf7 window] [ 3.473629][ T1] pci_bus 0000:00: root bus resource [io 0x0d00-0xffff window] [ 3.473666][ T1] pci_bus 0000:00: root bus resource [mem 0x000a0000-0x000bffff window] [ 3.473703][ T1] pci_bus 0000:00: root bus resource [mem 0xc0000000-0xfebfefff window] [ 3.473749][ T1] pci_bus 0000:00: root bus resource [bus 00-ff] [ 3.474433][ T1] pci 0000:00:00.0: [8086:1237] type 00 class 0x060000 conventional PCI endpoint [ 3.479505][ T1] pci 0000:00:01.0: [8086:7110] type 00 class 0x060100 conventional PCI endpoint [ 3.489836][ T1] pci 0000:00:01.3: [8086:7113] type 00 class 0x068000 conventional PCI endpoint [ 3.494636][ T1] pci 0000:00:01.3: quirk: [io 0xb000-0xb03f] claimed by PIIX4 ACPI [ 3.504121][ T1] pci 0000:00:03.0: [1af4:1004] type 00 class 0x000000 conventional PCI endpoint [ 3.508257][ T1] pci 0000:00:03.0: BAR 0 [io 0xc000-0xc03f] [ 3.508296][ T1] pci 0000:00:03.0: BAR 1 [mem 0xfe800000-0xfe80007f] [ 3.517076][ T1] pci 0000:00:04.0: [1af4:1000] type 00 class 0x020000 conventional PCI endpoint [ 3.522045][ T1] pci 0000:00:04.0: BAR 0 [io 0xc040-0xc07f] [ 3.522089][ T1] pci 0000:00:04.0: BAR 1 [mem 0xfe801000-0xfe80107f] [ 3.530160][ T1] pci 0000:00:05.0: [1ae0:a002] type 00 class 0x030000 conventional PCI endpoint [ 3.535462][ T1] pci 0000:00:05.0: BAR 0 [mem 0xfe000000-0xfe7fffff] [ 3.536354][ T1] pci 0000:00:05.0: Video device with shadowed ROM at [mem 0x000c0000-0x000dffff] [ 3.549957][ T1] pci 0000:00:06.0: [1af4:1002] type 00 class 0x00ff00 conventional PCI endpoint [ 3.554350][ T1] pci 0000:00:06.0: BAR 0 [io 0xc080-0xc09f] [ 3.563574][ T1] pci 0000:00:07.0: [1af4:1005] type 00 class 0x00ff00 conventional PCI endpoint [ 3.569253][ T1] pci 0000:00:07.0: BAR 0 [io 0xc0a0-0xc0bf] [ 3.569294][ T1] pci 0000:00:07.0: BAR 1 [mem 0xfe802000-0xfe80203f] [ 3.632338][ T1] ACPI: PCI: Interrupt link LNKA configured for IRQ 10 [ 3.643091][ T1] ACPI: PCI: Interrupt link LNKB configured for IRQ 10 [ 3.653510][ T1] ACPI: PCI: Interrupt link LNKC configured for IRQ 11 [ 3.664252][ T1] ACPI: PCI: Interrupt link LNKD configured for IRQ 11 [ 3.669856][ T1] ACPI: PCI: Interrupt link LNKS configured for IRQ 9 [ 3.712046][ T1] iommu: Default domain type: Translated [ 3.712046][ T1] iommu: DMA domain TLB invalidation policy: lazy mode [ 3.725336][ T1] SCSI subsystem initialized [ 3.735234][ T1] ACPI: bus type USB registered [ 3.735234][ T1] usbcore: registered new interface driver usbfs [ 3.735897][ T1] usbcore: registered new interface driver hub [ 3.736398][ T1] usbcore: registered new device driver usb [ 3.740535][ T1] mc: Linux media interface: v0.10 [ 3.740981][ T1] videodev: Linux video capture interface: v2.00 [ 3.749225][ T1] pps_core: LinuxPPS API ver. 1 registered [ 3.749238][ T1] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti [ 3.749512][ T1] PTP clock support registered [ 3.762593][ T1] EDAC MC: Ver: 3.0.0 [ 3.774868][ T1] Advanced Linux Sound Architecture Driver Initialized. [ 3.801090][ T1] Bluetooth: Core ver 2.22 [ 3.801376][ T1] NET: Registered PF_BLUETOOTH protocol family [ 3.801383][ T1] Bluetooth: HCI device and connection manager initialized [ 3.801505][ T1] Bluetooth: HCI socket layer initialized [ 3.801527][ T1] Bluetooth: L2CAP socket layer initialized [ 3.801639][ T1] Bluetooth: SCO socket layer initialized [ 3.801735][ T1] NET: Registered PF_ATMPVC protocol family [ 3.801741][ T1] NET: Registered PF_ATMSVC protocol family [ 3.812768][ T1] NetLabel: Initializing [ 3.812782][ T1] NetLabel: domain hash size = 128 [ 3.812791][ T1] NetLabel: protocols = UNLABELED CIPSOv4 CALIPSO [ 3.813876][ T1] NetLabel: unlabeled traffic allowed by default [ 3.818567][ T1] nfc: nfc_init: NFC Core ver 0.1 [ 3.819457][ T1] NET: Registered PF_NFC protocol family [ 3.819628][ T1] mctp: management component transport protocol core [ 3.819638][ T1] NET: Registered PF_MCTP protocol family [ 3.820287][ T1] PCI: Using ACPI for IRQ routing [ 3.820616][ T1] e820: register RAM buffer resource [mem 0x0009fc00-0x0009ffff] [ 3.820710][ T1] e820: register RAM buffer resource [mem 0xbfffd000-0xbfffffff] [ 3.832964][ T1] pci 0000:00:05.0: vgaarb: setting as boot VGA device [ 3.832988][ T1] pci 0000:00:05.0: vgaarb: bridge control possible [ 3.833000][ T1] pci 0000:00:05.0: vgaarb: VGA device added: decodes=io+mem,owns=io+mem,locks=none [ 3.833036][ T1] vgaarb: loaded [ 3.852701][ T1] clocksource: Switched to clocksource kvm-clock [ 3.860003][ T1] VFS: Disk quotas dquot_6.6.0 [ 3.860136][ T1] VFS: Dquot-cache hash table entries: 512 (4096 bytes) [ 3.874925][ T1] netfs: FS-Cache loaded [ 3.878150][ T1] CacheFiles: Loaded [ 3.879086][ T1] TOMOYO: 2.6.0 [ 3.879092][ T1] Mandatory Access Control activated. [ 3.894885][ T1] AppArmor: AppArmor Filesystem Enabled [ 3.897086][ T1] pnp: PnP ACPI init [ 3.945280][ T1] pnp: PnP ACPI: found 6 devices [ 4.079905][ T1] clocksource: acpi_pm: mask: 0xffffff max_cycles: 0xffffff, max_idle_ns: 2085701024 ns [ 4.082523][ T1] NET: Registered PF_INET protocol family [ 4.091128][ T1] IP idents hash table entries: 131072 (order: 8, 1048576 bytes, vmalloc) [ 4.109809][ T1] tcp_listen_portaddr_hash hash table entries: 4096 (order: 8, 557056 bytes, vmalloc) [ 4.110809][ T1] Table-perturb hash table entries: 65536 (order: 6, 262144 bytes, vmalloc) [ 4.112032][ T1] TCP established hash table entries: 65536 (order: 7, 524288 bytes, vmalloc) [ 4.142413][ T1] TCP bind hash table entries: 65536 (order: 13, 17825792 bytes, vmalloc hugepage) [ 4.159660][ T1] TCP: Hash tables configured (established 65536 bind 65536) [ 4.166139][ T1] MPTCP token hash table entries: 8192 (order: 9, 1245184 bytes, vmalloc) [ 4.170098][ T1] UDP hash table entries: 4096 (order: 9, 1835008 bytes, vmalloc) [ 4.178329][ T1] NET: Registered PF_UNIX/PF_LOCAL protocol family [ 4.188797][ T1] RPC: Registered named UNIX socket transport module. [ 4.188814][ T1] RPC: Registered udp transport module. [ 4.188824][ T1] RPC: Registered tcp transport module. [ 4.188834][ T1] RPC: Registered tcp-with-tls transport module. [ 4.188845][ T1] RPC: Registered tcp NFSv4.1 backchannel transport module. [ 4.204541][ T1] NET: Registered PF_XDP protocol family [ 4.204799][ T1] pci_bus 0000:00: resource 4 [io 0x0000-0x0cf7 window] [ 4.204821][ T1] pci_bus 0000:00: resource 5 [io 0x0d00-0xffff window] [ 4.204839][ T1] pci_bus 0000:00: resource 6 [mem 0x000a0000-0x000bffff window] [ 4.204857][ T1] pci_bus 0000:00: resource 7 [mem 0xc0000000-0xfebfefff window] [ 4.206907][ T1] pci 0000:00:00.0: Limiting direct PCI/PCI transfers [ 4.207302][ T1] PCI: CLS 0 bytes, default 64 [ 4.228896][ T1] PCI-DMA: Using software bounce buffering for IO (SWIOTLB) [ 4.228921][ T1] software IO TLB: mapped [mem 0x00000000b4600000-0x00000000b8600000] (64MB) [ 4.231511][ T1] ACPI: bus type thunderbolt registered [ 4.251463][ T1] RAPL PMU: API unit is 2^-32 Joules, 0 fixed counters, 10737418240 ms ovfl timer [ 4.260248][ T69] kworker/u8:3 (69) used greatest stack depth: 27336 bytes left [ 4.260505][ T70] kworker/u8:3 (70) used greatest stack depth: 26376 bytes left [ 4.301037][ T1] kvm_amd: CPU 1 isn't AMD or Hygon [ 4.301071][ T1] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x1fb6f578070, max_idle_ns: 440795229043 ns [ 4.302779][ T1] clocksource: Switched to clocksource tsc [ 4.371702][ T1] Initialise system trusted keyrings [ 4.384089][ T1] workingset: timestamp_bits=40 (anon: 35) max_order=21 bucket_order=0 (anon: 0) [ 4.394776][ T1] DLM installed [ 4.407083][ T1] squashfs: version 4.0 (2009/01/31) Phillip Lougher [ 4.426496][ T1] NFS: Registering the id_resolver key type [ 4.426601][ T1] Key type id_resolver registered [ 4.426609][ T1] Key type id_legacy registered [ 4.426848][ T1] nfs4filelayout_init: NFSv4 File Layout Driver Registering... [ 4.426969][ T1] nfs4flexfilelayout_init: NFSv4 Flexfile Layout Driver Registering... [ 4.430250][ T1] smbdirect: subsystem loading... [ 4.445877][ T1] smbdirect: subsystem loaded [ 4.478893][ T1] Key type cifs.spnego registered [ 4.479238][ T1] Key type cifs.idmap registered [ 4.488286][ T1] ntfs3: Enabled Linux POSIX ACLs support [ 4.488299][ T1] ntfs3: Read-only LZX/Xpress compression included [ 4.488788][ T1] efs: 1.0a - http://aeschi.ch.eu.org/efs/ [ 4.488972][ T1] jffs2: version 2.2. (NAND) (SUMMARY) © 2001-2006 Red Hat, Inc. [ 4.492303][ T1] romfs: ROMFS MTD (C) 2007 Red Hat, Inc. [ 4.492659][ T1] QNX4 filesystem 0.2.3 registered. [ 4.492862][ T1] qnx6: QNX6 filesystem 1.0.0 registered. [ 4.505343][ T1] fuse: init (API version 7.45) [ 4.512053][ T1] orangefs_debugfs_init: called with debug mask: :none: :0: [ 4.517831][ T1] orangefs_init: module version upstream loaded [ 4.519499][ T1] JFS: nTxBlock = 8192, nTxLock = 65536 [ 4.543608][ T1] SGI XFS with ACLs, security attributes, realtime, quota, no debug enabled [ 4.552702][ T1] 9p: Installing v9fs 9p2000 file system support [ 4.557240][ T1] NILFS version 2 loaded [ 4.557252][ T1] befs: version: 0.9.3 [ 4.558074][ T1] ocfs2: Registered cluster interface o2cb [ 4.560098][ T1] ocfs2: Registered cluster interface user [ 4.561169][ T1] OCFS2 User DLM kernel interface loaded [ 4.613804][ T1] gfs2: GFS2 installed [ 4.635420][ T1] ceph: loaded (mds proto 32) [ 4.658219][ T1] NET: Registered PF_ALG protocol family [ 4.659308][ T1] async_tx: api initialized (async) [ 4.659371][ T1] Key type asymmetric registered [ 4.659448][ T1] Asymmetric key parser 'x509' registered [ 4.659463][ T1] Asymmetric key parser 'pkcs8' registered [ 4.659477][ T1] Key type pkcs7_test registered [ 4.661060][ T1] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 239) [ 4.663369][ T1] io scheduler mq-deadline registered [ 4.663387][ T1] io scheduler kyber registered [ 4.663938][ T1] io scheduler bfq registered [ 4.714544][ T1] input: Power Button as /devices/platform/LNXPWRBN:00/input/input0 [ 4.718194][ T1] ACPI: button: Power Button [PWRF] [ 4.729384][ T1] input: Sleep Button as /devices/platform/LNXSLPBN:00/input/input1 [ 4.732090][ T1] ACPI: button: Sleep Button [SLPF] [ 4.773769][ T1] ioatdma: Intel(R) QuickData Technology Driver 5.00 [ 4.821733][ T1] ACPI: \_SB_.LNKC: Enabled at IRQ 11 [ 4.821929][ T1] virtio-pci 0000:00:03.0: virtio_pci: leaving for legacy driver [ 4.875947][ T1] ACPI: \_SB_.LNKD: Enabled at IRQ 10 [ 4.876122][ T1] virtio-pci 0000:00:04.0: virtio_pci: leaving for legacy driver [ 4.926901][ T1] ACPI: \_SB_.LNKB: Enabled at IRQ 10 [ 4.927035][ T1] virtio-pci 0000:00:06.0: virtio_pci: leaving for legacy driver [ 4.964595][ T1] virtio-pci 0000:00:07.0: virtio_pci: leaving for legacy driver [ 5.294561][ T355] kworker/u8:4 (355) used greatest stack depth: 25768 bytes left [ 6.023407][ T1] N_HDLC line discipline registered with maxframe=4096 [ 6.024915][ T1] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled [ 6.045030][ T1] 00:02: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A [ 6.074003][ T1] 00:03: ttyS1 at I/O 0x2f8 (irq = 3, base_baud = 115200) is a 16550A [ 6.099752][ T1] 00:04: ttyS2 at I/O 0x3e8 (irq = 6, base_baud = 115200) is a 16550A [ 6.129016][ T1] 00:05: ttyS3 at I/O 0x2e8 (irq = 7, base_baud = 115200) is a 16550A [ 6.183255][ T1] Non-volatile memory driver v1.3 [ 6.228479][ T1] usbcore: registered new interface driver xillyusb [ 6.243258][ T1] ACPI: bus type drm_connector registered [ 6.255308][ T1] [drm] Initialized vgem 1.0.0 for vgem on minor 0 [ 6.284351][ T1] [drm] Initialized vkms 1.0.0 for vkms on minor 1 [ 6.443345][ T1] Console: switching to colour frame buffer device 128x48 [ 6.507238][ T1] faux_driver vkms: [drm] fb0: vkmsdrmfb frame buffer device [ 6.508285][ T1] usbcore: registered new interface driver udl [ 6.521477][ T1] usbcore: registered new interface driver gm12u320 [ 6.522722][ T1] usbcore: registered new interface driver gud [ 6.728911][ T1] brd: module loaded [ 7.257904][ T1] loop: module loaded [ 7.702648][ T1] zram: Added device: zram0 [ 7.733182][ T1] null_blk: disk nullb0 created [ 7.733198][ T1] null_blk: module loaded [ 7.740849][ T1] Guest personality initialized and is inactive [ 7.742577][ T1] VMCI host device registered (name=vmci, major=10, minor=267) [ 7.742599][ T1] Initialized host personality [ 7.777406][ T1] usbcore: registered new interface driver rtsx_usb [ 7.790411][ T1] usbcore: registered new interface driver viperboard [ 7.791872][ T1] usbcore: registered new interface driver dln2 [ 7.801048][ T1] usbcore: registered new interface driver pn533_usb [ 7.830566][ T1] nfcsim 0.2 initialized [ 7.831403][ T1] usbcore: registered new interface driver port100 [ 7.832257][ T1] usbcore: registered new interface driver nfcmrvl [ 7.861107][ T1] Loading iSCSI transport class v2.0-870. [ 7.911188][ T1] virtio_scsi virtio0: 1/0/0 default/read/poll queues [ 7.967297][ T1] scsi host0: Virtio SCSI HBA [ 7.968139][ T1] blk-mq: reduced tag depth to 10240 [ 8.203893][ T1] st: Version 20160209, fixed bufsize 32768, s/g segs 256 [ 8.231674][ T109] scsi 0:0:1:0: Direct-Access Google PersistentDisk 1 PQ: 0 ANSI: 6 [ 8.266312][ T1] ------------[ cut here ]------------ [ 8.266326][ T1] workqueue: nvme_tcp_wq is using neither WQ_PERCPU or WQ_UNBOUND. Setting WQ_PERCPU. [ 8.266344][ T1] WARNING: kernel/workqueue.c:5856 at __alloc_workqueue+0x1d02/0x2070, CPU#1: swapper/0/1 [ 8.266383][ T1] Modules linked in: [ 8.266417][ T1] CPU: 1 UID: 0 PID: 1 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT_{RT,(full)} [ 8.266436][ T1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 8.266454][ T1] RIP: 0010:__alloc_workqueue+0x1d07/0x2070 [ 8.266478][ T1] Code: e9 36 f9 ff ff e8 29 8a 37 00 e9 05 fb ff ff e8 1f 8a 37 00 e9 92 fb ff ff e8 15 8a 37 00 48 8d 3d ce 2f 02 0e 48 8b 74 24 20 <67> 48 0f b9 3a 81 cd 00 01 00 00 e9 88 e5 ff ff e8 f4 89 37 00 48 [ 8.266493][ T1] RSP: 0000:ffffc900000677a8 EFLAGS: 00010293 [ 8.266508][ T1] RAX: ffffffff818dbc1b RBX: 0000000000000000 RCX: ffff88801cec5d00 [ 8.266522][ T1] RDX: 0000000000000000 RSI: ffff888026200168 RDI: ffffffff8f8febf0 [ 8.266535][ T1] RBP: 0000000000000058 R08: ffff88801cec5d00 R09: 0000000000000002 [ 8.266547][ T1] R10: 0000000000000100 R11: 0000000000000102 R12: dffffc0000000000 [ 8.266558][ T1] R13: ffff888026200000 R14: ffffc900000678c0 R15: 0000000000000000 [ 8.266571][ T1] FS: 0000000000000000(0000) GS:ffff888125fcb000(0000) knlGS:0000000000000000 [ 8.266585][ T1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 8.266597][ T1] CR2: 0000000000000000 CR3: 000000000ddb8000 CR4: 00000000003526f0 [ 8.266612][ T1] Call Trace: [ 8.266623][ T1] [ 8.266636][ T1] ? _raw_spin_unlock_irqrestore+0x4c/0x80 [ 8.266668][ T1] ? rt_mutex_slowunlock+0x4a7/0x8b0 [ 8.266691][ T1] ? reacquire_held_locks+0x104/0x190 [ 8.266718][ T1] ? rt_spin_lock+0x1e0/0x400 [ 8.266746][ T1] alloc_workqueue_noprof+0xe3/0x210 [ 8.266793][ T1] ? __pfx_alloc_workqueue_noprof+0x10/0x10 [ 8.266819][ T1] ? add_device_randomness+0xc1/0x100 [ 8.266848][ T1] ? __pfx_add_device_randomness+0x10/0x10 [ 8.266872][ T1] ? __pfx_nvme_fc_init_module+0x10/0x10 [ 8.266891][ T1] ? __pfx_nvme_tcp_init_module+0x10/0x10 [ 8.266911][ T1] nvme_tcp_init_module+0x27/0x100 [ 8.266932][ T1] do_one_initcall+0x250/0x870 [ 8.266957][ T1] ? __pfx_nvme_tcp_init_module+0x10/0x10 [ 8.266978][ T1] ? __pfx_do_one_initcall+0x10/0x10 [ 8.267008][ T1] ? __pfx___schedule+0x10/0x10 [ 8.267033][ T1] ? __pfx___schedule+0x10/0x10 [ 8.267069][ T1] ? irqentry_exit+0x218/0x8b0 [ 8.267087][ T1] ? lockdep_hardirqs_on+0x7a/0x110 [ 8.267115][ T1] ? irqentry_exit+0x218/0x8b0 [ 8.267131][ T1] ? trace_irq_disable+0x3b/0x140 [ 8.267173][ T1] ? next_arg+0x498/0x5e0 [ 8.267194][ T1] ? parameq+0x14d/0x170 [ 8.267223][ T1] ? parse_args+0x9fc/0xb00 [ 8.267269][ T1] ? rcu_is_watching+0x15/0xb0 [ 8.267301][ T1] do_initcall_level+0x104/0x190 [ 8.267325][ T1] ? kernel_init+0x1d/0x1d0 [ 8.267348][ T1] do_initcalls+0x59/0xa0 [ 8.267371][ T1] kernel_init_freeable+0x2a6/0x3e0 [ 8.267395][ T1] ? __pfx_kernel_init+0x10/0x10 [ 8.267419][ T1] kernel_init+0x1d/0x1d0 [ 8.267439][ T1] ? __pfx_kernel_init+0x10/0x10 [ 8.267460][ T1] ret_from_fork+0x514/0xb70 [ 8.267488][ T1] ? __pfx_ret_from_fork+0x10/0x10 [ 8.267513][ T1] ? __switch_to+0xc79/0x1410 [ 8.267538][ T1] ? __pfx_kernel_init+0x10/0x10 [ 8.267562][ T1] ret_from_fork_asm+0x1a/0x30 [ 8.267604][ T1] [ 8.267619][ T1] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 8.267633][ T1] CPU: 1 UID: 0 PID: 1 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT_{RT,(full)} [ 8.267654][ T1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 8.267664][ T1] Call Trace: [ 8.267671][ T1] [ 8.267679][ T1] vpanic+0x56c/0xa60 [ 8.267705][ T1] ? __pfx__printk+0x10/0x10 [ 8.267728][ T1] ? __pfx_vpanic+0x10/0x10 [ 8.267751][ T1] ? is_bpf_text_address+0x292/0x2b0 [ 8.267778][ T1] ? is_bpf_text_address+0x26/0x2b0 [ 8.267819][ T1] panic+0xc5/0xd0 [ 8.267844][ T1] ? __pfx_panic+0x10/0x10 [ 8.267879][ T1] ? ret_from_fork_asm+0x1a/0x30 [ 8.267910][ T1] __warn+0x315/0x4c0 [ 8.267935][ T1] ? __alloc_workqueue+0x1d02/0x2070 [ 8.267960][ T1] ? __alloc_workqueue+0x1d02/0x2070 [ 8.267985][ T1] __report_bug+0x339/0x540 [ 8.268002][ T1] ? do_initcalls+0x59/0xa0 [ 8.268022][ T1] ? kernel_init_freeable+0x2a6/0x3e0 [ 8.268043][ T1] ? kernel_init+0x1d/0x1d0 [ 8.268068][ T1] ? __alloc_workqueue+0x1d02/0x2070 [ 8.268092][ T1] ? __pfx___report_bug+0x10/0x10 [ 8.268129][ T1] report_bug_entry+0x19a/0x290 [ 8.268149][ T1] ? __alloc_workqueue+0x1d07/0x2070 [ 8.268170][ T1] ? __alloc_workqueue+0x1d0c/0x2070 [ 8.268190][ T1] handle_bug+0xce/0x200 [ 8.268210][ T1] exc_invalid_op+0x1a/0x50 [ 8.268229][ T1] asm_exc_invalid_op+0x1a/0x20 [ 8.268247][ T1] RIP: 0010:__alloc_workqueue+0x1d07/0x2070 [ 8.268271][ T1] Code: e9 36 f9 ff ff e8 29 8a 37 00 e9 05 fb ff ff e8 1f 8a 37 00 e9 92 fb ff ff e8 15 8a 37 00 48 8d 3d ce 2f 02 0e 48 8b 74 24 20 <67> 48 0f b9 3a 81 cd 00 01 00 00 e9 88 e5 ff ff e8 f4 89 37 00 48 [ 8.268287][ T1] RSP: 0000:ffffc900000677a8 EFLAGS: 00010293 [ 8.268301][ T1] RAX: ffffffff818dbc1b RBX: 0000000000000000 RCX: ffff88801cec5d00 [ 8.268311][ T1] RDX: 0000000000000000 RSI: ffff888026200168 RDI: ffffffff8f8febf0 [ 8.268321][ T1] RBP: 0000000000000058 R08: ffff88801cec5d00 R09: 0000000000000002 [ 8.268330][ T1] R10: 0000000000000100 R11: 0000000000000102 R12: dffffc0000000000 [ 8.268340][ T1] R13: ffff888026200000 R14: ffffc900000678c0 R15: 0000000000000000 [ 8.268358][ T1] ? __alloc_workqueue+0x1cfb/0x2070 [ 8.268388][ T1] ? __alloc_workqueue+0x1cfb/0x2070 [ 8.268412][ T1] ? _raw_spin_unlock_irqrestore+0x4c/0x80 [ 8.268441][ T1] ? rt_mutex_slowunlock+0x4a7/0x8b0 [ 8.268464][ T1] ? reacquire_held_locks+0x104/0x190 [ 8.268491][ T1] ? rt_spin_lock+0x1e0/0x400 [ 8.268521][ T1] alloc_workqueue_noprof+0xe3/0x210 [ 8.268551][ T1] ? __pfx_alloc_workqueue_noprof+0x10/0x10 [ 8.268576][ T1] ? add_device_randomness+0xc1/0x100 [ 8.268599][ T1] ? __pfx_add_device_randomness+0x10/0x10 [ 8.268623][ T1] ? __pfx_nvme_fc_init_module+0x10/0x10 [ 8.268643][ T1] ? __pfx_nvme_tcp_init_module+0x10/0x10 [ 8.268662][ T1] nvme_tcp_init_module+0x27/0x100 [ 8.268684][ T1] do_one_initcall+0x250/0x870 [ 8.268709][ T1] ? __pfx_nvme_tcp_init_module+0x10/0x10 [ 8.268730][ T1] ? __pfx_do_one_initcall+0x10/0x10 [ 8.268762][ T1] ? __pfx___schedule+0x10/0x10 [ 8.268815][ T1] ? __pfx___schedule+0x10/0x10 [ 8.268854][ T1] ? irqentry_exit+0x218/0x8b0 [ 8.268871][ T1] ? lockdep_hardirqs_on+0x7a/0x110 [ 8.268899][ T1] ? irqentry_exit+0x218/0x8b0 [ 8.268915][ T1] ? trace_irq_disable+0x3b/0x140 [ 8.268956][ T1] ? next_arg+0x498/0x5e0 [ 8.268976][ T1] ? parameq+0x14d/0x170 [ 8.269005][ T1] ? parse_args+0x9fc/0xb00 [ 8.269050][ T1] ? rcu_is_watching+0x15/0xb0 [ 8.269082][ T1] do_initcall_level+0x104/0x190 [ 8.269105][ T1] ? kernel_init+0x1d/0x1d0 [ 8.269127][ T1] do_initcalls+0x59/0xa0 [ 8.269151][ T1] kernel_init_freeable+0x2a6/0x3e0 [ 8.269175][ T1] ? __pfx_kernel_init+0x10/0x10 [ 8.269199][ T1] kernel_init+0x1d/0x1d0 [ 8.269220][ T1] ? __pfx_kernel_init+0x10/0x10 [ 8.269240][ T1] ret_from_fork+0x514/0xb70 [ 8.269268][ T1] ? __pfx_ret_from_fork+0x10/0x10 [ 8.269292][ T1] ? __switch_to+0xc79/0x1410 [ 8.269316][ T1] ? __pfx_kernel_init+0x10/0x10 [ 8.269340][ T1] ret_from_fork_asm+0x1a/0x30 [ 8.269382][ T1] [ 8.269744][ T1] Kernel Offset: disabled syzkaller build log: go env (err=) AR='ar' CC='gcc' CGO_CFLAGS='-O2 -g' CGO_CPPFLAGS='' CGO_CXXFLAGS='-O2 -g' CGO_ENABLED='1' CGO_FFLAGS='-O2 -g' CGO_LDFLAGS='-O2 -g' CXX='g++' GCCGO='gccgo' GO111MODULE='auto' GOAMD64='v1' GOARCH='amd64' GOAUTH='netrc' GOBIN='' GOCACHE='/syzkaller/.cache/go-build' GOCACHEPROG='' GODEBUG='' GOENV='/syzkaller/.config/go/env' GOEXE='' GOEXPERIMENT='' GOFIPS140='off' GOFLAGS='' GOGCCFLAGS='-fPIC -m64 -pthread -Wl,--no-gc-sections -fmessage-length=0 -ffile-prefix-map=/tmp/go-build252558540=/tmp/go-build -gno-record-gcc-switches' GOHOSTARCH='amd64' GOHOSTOS='linux' GOINSECURE='' GOMOD='/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/go.mod' GOMODCACHE='/syzkaller/jobs-2/linux/gopath/pkg/mod' GONOPROXY='' GONOSUMDB='' GOOS='linux' GOPATH='/syzkaller/jobs-2/linux/gopath' GOPRIVATE='' GOPROXY='https://proxy.golang.org,direct' GOROOT='/usr/local/go' GOSUMDB='sum.golang.org' GOTELEMETRY='local' GOTELEMETRYDIR='/syzkaller/.config/go/telemetry' GOTMPDIR='' GOTOOLCHAIN='auto' GOTOOLDIR='/usr/local/go/pkg/tool/linux_amd64' GOVCS='' GOVERSION='go1.26.0' GOWORK='' PKG_CONFIG='pkg-config' git status (err=) HEAD detached at 4826c28ef2a nothing to commit, working tree clean tput: No value for $TERM and no -T specified tput: No value for $TERM and no -T specified Makefile:31: run command via tools/syz-env for best compatibility, see: Makefile:32: https://github.com/google/syzkaller/blob/master/docs/contributing.md#using-syz-env go list -f '{{.Stale}}' ./sys/syz-sysgen | grep -q false || go install ./sys/syz-sysgen make .descriptions tput: No value for $TERM and no -T specified tput: No value for $TERM and no -T specified Makefile:31: run command via tools/syz-env for best compatibility, see: Makefile:32: https://github.com/google/syzkaller/blob/master/docs/contributing.md#using-syz-env bin/syz-sysgen touch .descriptions GOOS=linux GOARCH=amd64 go build -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=4826c28ef2aca1ee7dba7111e48d3b6a9c83d9a8 -X github.com/google/syzkaller/prog.gitRevisionDate=20250606-171009" -o ./bin/linux_amd64/syz-execprog github.com/google/syzkaller/tools/syz-execprog mkdir -p ./bin/linux_amd64 g++ -o ./bin/linux_amd64/syz-executor executor/executor.cc \ -m64 -O2 -pthread -Wall -Werror -Wparentheses -Wunused-const-variable -Wframe-larger-than=16384 -Wno-stringop-overflow -Wno-array-bounds -Wno-format-overflow -Wno-unused-but-set-variable -Wno-unused-command-line-argument -static-pie -std=c++17 -I. -Iexecutor/_include -DGOOS_linux=1 -DGOARCH_amd64=1 \ -DHOSTGOOS_linux=1 -DGIT_REVISION=\"4826c28ef2aca1ee7dba7111e48d3b6a9c83d9a8\" /usr/bin/ld: /tmp/ccdO7ibg.o: in function `Connection::Connect(char const*, char const*)': executor.cc:(.text._ZN10Connection7ConnectEPKcS1_[_ZN10Connection7ConnectEPKcS1_]+0x386): warning: Using 'gethostbyname' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking