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@10.128.0.52" "pwd"]: exit status 255 ssh: connect to host 10.128.0.52 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. serialport: Connected to syzkaller.us-central1-c.ci-upstream-linux-next-kasan-gce-root-test-1 port 1 (session ID: 0b818d59973c289ba4a63c79e7a828620c0531ea371542f8e18ab24fb9c61a10, 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 086f95b8-7ada-47d5-ae28-d84de4582e6d 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 [ 0.000005][ T0] kvm-clock: using sched offset of 5406552811 cycles [ 0.000011][ T0] clocksource: kvm-clock: mask: 0xffffffffffffffff max_cycles: 0x1cd42e4dffb, max_idle_ns: 881590591483 ns [ 0.000031][ T0] tsc: Detected 2199.998 MHz processor [ 0.003881][ T0] last_pfn = 0x240000 max_arch_pfn = 0x400000000 [ 0.003930][ T0] MTRR map: 4 entries (3 fixed + 1 variable; max 19), built from 8 variable MTRRs [ 0.003941][ T0] x86/PAT: Configuration [0-7]: WB WC UC- UC WB WP UC- WT [ 0.004000][ T0] last_pfn = 0xbfffd max_arch_pfn = 0x400000000 [ 0.008716][ T0] found SMP MP-table at [mem 0x000f2890-0x000f289f] [ 0.008741][ T0] Using GB pages for direct mapping [ 0.012387][ T0] ACPI: Early table checksum verification disabled [ 0.012411][ T0] ACPI: RSDP 0x00000000000F2610 000014 (v00 Google) [ 0.012427][ T0] ACPI: RSDT 0x00000000BFFFFFB0 000038 (v01 Google GOOGRSDT 00000001 GOOG 00000001) [ 0.012449][ T0] ACPI: FACP 0x00000000BFFFF370 0000F4 (v02 Google GOOGFACP 00000001 GOOG 00000001) [ 0.012472][ T0] ACPI: DSDT 0x00000000BFFFD900 001A64 (v01 Google GOOGDSDT 00000001 GOOG 00000001) [ 0.012490][ T0] ACPI: FACS 0x00000000BFFFD8C0 000040 [ 0.012503][ T0] ACPI: FACS 0x00000000BFFFD8C0 000040 [ 0.012517][ T0] ACPI: SRAT 0x00000000BFFFFEA0 0000C8 (v03 Google GOOGSRAT 00000001 GOOG 00000001) [ 0.012535][ T0] ACPI: APIC 0x00000000BFFFFDF0 000076 (v05 Google GOOGAPIC 00000001 GOOG 00000001) [ 0.012552][ T0] ACPI: SSDT 0x00000000BFFFF470 000980 (v01 Google GOOGSSDT 00000001 GOOG 00000001) [ 0.012570][ T0] ACPI: WAET 0x00000000BFFFFE70 000028 (v01 Google GOOGWAET 00000001 GOOG 00000001) [ 0.012584][ T0] ACPI: Reserving FACP table memory at [mem 0xbffff370-0xbffff463] [ 0.012592][ T0] ACPI: Reserving DSDT table memory at [mem 0xbfffd900-0xbffff363] [ 0.012598][ T0] ACPI: Reserving FACS table memory at [mem 0xbfffd8c0-0xbfffd8ff] [ 0.012605][ T0] ACPI: Reserving FACS table memory at [mem 0xbfffd8c0-0xbfffd8ff] [ 0.012611][ T0] ACPI: Reserving SRAT table memory at [mem 0xbffffea0-0xbfffff67] [ 0.012617][ T0] ACPI: Reserving APIC table memory at [mem 0xbffffdf0-0xbffffe65] [ 0.012623][ T0] ACPI: Reserving SSDT table memory at [mem 0xbffff470-0xbffffdef] [ 0.012630][ T0] ACPI: Reserving WAET table memory at [mem 0xbffffe70-0xbffffe97] [ 0.012756][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x00000000-0x0009ffff] [ 0.012766][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x00100000-0xbfffffff] [ 0.012774][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x100000000-0x23fffffff] [ 0.012784][ T0] NUMA: Node 0 [mem 0x00001000-0x0009ffff] + [mem 0x00100000-0xbfffffff] -> [mem 0x00001000-0xbfffffff] [ 0.012796][ T0] NUMA: Node 0 [mem 0x00001000-0xbfffffff] + [mem 0x100000000-0x23fffffff] -> [mem 0x00001000-0x23fffffff] [ 0.012817][ T0] Faking node 0 at [mem 0x0000000000001000-0x0000000140000fff] (5120MB) [ 0.012825][ T0] Faking node 1 at [mem 0x0000000140001000-0x000000023fffffff] (4095MB) [ 0.012901][ T0] NODE_DATA(0) allocated [mem 0x13fffac80-0x140000fff] [ 0.013643][ T0] NODE_DATA(1) allocated [mem 0x23fff6c80-0x23fffcfff] [ 0.294818][ T0] KernelAddressSanitizer initialized (generic) [ 0.295623][ T0] ACPI: PM-Timer IO Port: 0xb008 [ 0.295657][ T0] ACPI: LAPIC_NMI (acpi_id[0xff] dfl dfl lint[0x1]) [ 0.295785][ T0] IOAPIC[0]: apic_id 0, version 17, address 0xfec00000, GSI 0-23 [ 0.295799][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 high level) [ 0.295807][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level) [ 0.295815][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 high level) [ 0.295829][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 high level) [ 0.295848][ T0] ACPI: Using ACPI (MADT) for SMP configuration information [ 0.295858][ T0] CPU topo: Max. logical packages: 1 [ 0.295862][ T0] CPU topo: Max. logical nodes: 1 [ 0.295866][ T0] CPU topo: Num. nodes per package: 1 [ 0.295874][ T0] CPU topo: Max. logical dies: 1 [ 0.295878][ T0] CPU topo: Max. dies per package: 1 [ 0.295890][ T0] CPU topo: Max. threads per core: 2 [ 0.295895][ T0] CPU topo: Num. cores per package: 1 [ 0.295899][ T0] CPU topo: Num. threads per package: 2 [ 0.295903][ T0] CPU topo: Allowing 2 present CPUs plus 0 hotplug CPUs [ 0.296085][ T0] PM: hibernation: Registered nosave memory: [mem 0x00000000-0x00000fff] [ 0.296095][ T0] PM: hibernation: Registered nosave memory: [mem 0x0009f000-0x000fffff] [ 0.296104][ T0] PM: hibernation: Registered nosave memory: [mem 0xbfffd000-0xffffffff] [ 0.296126][ T0] [gap 0xc0000000-0xfffbbfff] available for PCI devices [ 0.296132][ T0] Booting paravirtualized kernel on KVM [ 0.296143][ T0] clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns [ 0.425927][ T0] Zone ranges: [ 0.425939][ T0] DMA [mem 0x0000000000001000-0x0000000000ffffff] [ 0.425951][ T0] DMA32 [mem 0x0000000001000000-0x00000000ffffffff] [ 0.425959][ T0] Normal [mem 0x0000000100000000-0x000000023fffffff] [ 0.425967][ T0] Device empty [ 0.425972][ T0] Movable zone start for each node [ 0.425975][ T0] Early memory node ranges [ 0.425978][ T0] node 0: [mem 0x0000000000001000-0x000000000009efff] [ 0.425986][ T0] node 0: [mem 0x0000000000100000-0x00000000bfffcfff] [ 0.425993][ T0] node 0: [mem 0x0000000100000000-0x0000000140000fff] [ 0.426000][ T0] node 1: [mem 0x0000000140001000-0x000000023fffffff] [ 0.426010][ T0] Initmem setup node 0 [mem 0x0000000000001000-0x0000000140000fff] [ 0.426029][ T0] Initmem setup node 1 [mem 0x0000000140001000-0x000000023fffffff] [ 0.426074][ T0] On node 0, zone DMA: 1 pages in unavailable ranges [ 0.426321][ T0] On node 0, zone DMA: 97 pages in unavailable ranges [ 0.486306][ T0] On node 0, zone Normal: 3 pages in unavailable ranges [ 0.546437][ T0] setup_percpu: NR_CPUS:8 nr_cpumask_bits:2 nr_cpu_ids:2 nr_node_ids:2 [ 0.547132][ T0] percpu: Embedded 71 pages/cpu s253896 r8192 d28728 u1048576 [ 0.547299][ T0] kvm-guest: PV spinlocks enabled [ 0.547309][ T0] PV qspinlock hash table entries: 256 (order: 0, 4096 bytes, linear) [ 0.547328][ 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 \ [ 0.547357][ T0] Kernel command line: comedi.comedi_num_legacy_minors=4 panic_on_warn=1 BOOT_IMAGE=/boot/bzImage root=/dev/sda1 console=ttyS0 [ 0.551763][ T0] Unknown kernel command line parameters "nbds_max=32", will be passed to user space. [ 0.551836][ T0] random: crng init done [ 0.551840][ T0] printk: log buffer data + meta data: 262144 + 917504 = 1179648 bytes [ 0.552036][ T0] software IO TLB: area num 2. [ 0.578607][ T0] Fallback order for Node 0: 0 1 [ 0.578628][ T0] Fallback order for Node 1: 1 0 [ 0.578642][ T0] Built 2 zonelists, mobility grouping on. Total pages: 2097051 [ 0.578649][ T0] Policy zone: Normal [ 0.579308][ T0] mem auto-init: stack:all(zero), heap alloc:on, heap free:off [ 0.579318][ T0] stackdepot: allocating hash table via alloc_large_system_hash [ 0.579328][ T0] stackdepot hash table entries: 1048576 (order: 12, 16777216 bytes, linear) [ 0.583516][ T0] stackdepot: allocating space for 8192 stack pools via memblock [ 1.235826][ T0] ********************************************************** [ 1.235838][ T0] ** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE ** [ 1.235842][ T0] ** ** [ 1.235845][ T0] ** This system shows unhashed kernel memory addresses ** [ 1.235849][ T0] ** via the console, logs, and other interfaces. This ** [ 1.235852][ T0] ** might reduce the security of your system. ** [ 1.235856][ T0] ** ** [ 1.235859][ T0] ** If you see this message and you are not debugging ** [ 1.235863][ T0] ** the kernel, report this immediately to your system ** [ 1.235866][ T0] ** administrator! ** [ 1.235870][ T0] ** ** [ 1.235873][ T0] ** Use hash_pointers=always to force this mode off ** [ 1.235877][ T0] ** ** [ 1.235880][ T0] ** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE ** [ 1.235884][ T0] ********************************************************** [ 1.239500][ T0] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=2 [ 1.363151][ T0] allocated 167772160 bytes of page_ext [ 1.363190][ T0] Node 0, zone DMA: page owner found early allocated 0 pages [ 1.377380][ T0] Node 0, zone DMA32: page owner found early allocated 21120 pages [ 1.381474][ T0] Node 0, zone Normal: page owner found early allocated 131 pages [ 1.392971][ T0] Node 1, zone Normal: page owner found early allocated 19848 pages [ 1.393451][ T0] Kernel/User page tables isolation: enabled [ 1.395673][ T0] Dynamic Preempt: full [ 1.396860][ T0] Running RCU self tests [ 1.396865][ T0] Running RCU synchronous self tests [ 1.396869][ T0] rcu: Preemptible hierarchical RCU implementation. [ 1.396873][ T0] rcu: RCU lockdep checking is enabled. [ 1.396876][ T0] rcu: RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=2. [ 1.396882][ T0] rcu: RCU priority boosting: priority 1 delay 500 ms. [ 1.396888][ T0] rcu: RCU callback double-/use-after-free debug is enabled. [ 1.396892][ T0] rcu: RCU_SOFTIRQ processing moved to rcuc kthreads. [ 1.396896][ T0] rcu: RCU debug extended QS entry/exit. [ 1.396899][ T0] No expedited grace period (rcu_normal_after_boot). [ 1.396903][ T0] Trampoline variant of Tasks RCU enabled. [ 1.396906][ T0] Tracing variant of Tasks RCU enabled. [ 1.396909][ T0] rcu: RCU calculated value of scheduler-enlistment delay is 10 jiffies. [ 1.396914][ T0] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2 [ 1.397085][ T0] Running RCU synchronous self tests [ 1.397119][ T0] RCU Tasks: Setting shift to 1 and lim to 1 rcu_task_cb_adjust=1 rcu_task_cpu_ids=2. [ 1.559058][ T0] NR_IRQS: 4352, nr_irqs: 440, preallocated irqs: 16 [ 1.560229][ T0] rcu: srcu_init: Setting srcu_struct sizes based on contention. [ 1.561002][ T0] kfence: initialized - using 2097152 bytes for 255 objects at 0xffff88823be00000-0xffff88823c000000 [ 1.563115][ T0] Console: colour VGA+ 80x25 [ 2.019896][ T0] printk: legacy console [ttyS0] enabled [ 2.019908][ T0] printk: legacy bootconsole [earlyser0] disabled [ 2.020004][ T0] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar [ 2.020009][ T0] ... MAX_LOCKDEP_SUBCLASSES: 8 [ 2.020013][ T0] ... MAX_LOCK_DEPTH: 48 [ 2.020017][ T0] ... MAX_LOCKDEP_KEYS: 8192 [ 2.020022][ T0] ... CLASSHASH_SIZE: 4096 [ 2.020026][ T0] ... MAX_LOCKDEP_ENTRIES: 1048576 [ 2.020031][ T0] ... MAX_LOCKDEP_CHAINS: 1048576 [ 2.020037][ T0] ... CHAINHASH_SIZE: 524288 [ 2.020043][ T0] memory used by lock dependency info: 106625 kB [ 2.020050][ T0] memory used for stack traces: 8320 kB [ 2.020057][ T0] per task-struct memory footprint: 1920 bytes [ 2.020373][ T0] ACPI: Core revision 20260408 [ 2.021922][ T0] APIC: Switch to symmetric I/O mode setup [ 2.022743][ T0] x2apic enabled [ 2.029048][ T0] APIC: Switched APIC routing to: physical x2apic [ 2.036906][ T0] ..TIMER: vector=0x30 apic1=0 pin1=0 apic2=-1 pin2=-1 [ 2.037333][ T0] clocksource: tsc-early: mask: 0xffffffffffffffff max_cycles: 0x1fb63109b96, max_idle_ns: 440795265316 ns [ 2.037384][ T0] Calibrating delay loop (skipped) preset value.. 4399.99 BogoMIPS (lpj=21999980) [ 2.038072][ T0] Last level iTLB entries: 4KB 64, 2MB 8, 4MB 8 [ 2.038079][ T0] Last level dTLB entries: 4KB 64, 2MB 32, 4MB 32, 1GB 4 [ 2.038138][ T0] mitigations: Enabled attack vectors: user_kernel, user_user, guest_host, guest_guest, SMT mitigations: auto [ 2.038157][ T0] Speculative Store Bypass: Mitigation: Speculative Store Bypass disabled via prctl [ 2.038164][ T0] Spectre V2 : Mitigation: IBRS [ 2.038168][ T0] RETBleed: Mitigation: IBRS [ 2.038172][ T0] ITS: Mitigation: Aligned branch/return thunks [ 2.038176][ T0] Spectre V2 : User space: Mitigation: STIBP via prctl [ 2.038181][ T0] MDS: Mitigation: Clear CPU buffers [ 2.038185][ T0] TAA: Mitigation: Clear CPU buffers [ 2.038188][ T0] MMIO Stale Data: Vulnerable: Clear CPU buffers attempted, no microcode [ 2.038193][ T0] Spectre V1 : Mitigation: usercopy/swapgs barriers and __user pointer sanitization [ 2.038201][ T0] Spectre V2 : Spectre v2 / SpectreRSB: Filling RSB on context switch and VMEXIT [ 2.038223][ T0] Spectre V2 : mitigation: Enabling conditional Indirect Branch Prediction Barrier [ 2.038280][ T0] active return thunk: its_return_thunk [ 2.038300][ T0] Spectre V2 : Spectre BHI mitigation: SW BHB clearing on syscall and VM exit [ 2.038365][ T0] x86/fpu: Supporting XSAVE feature 0x001: 'x87 floating point registers' [ 2.038376][ T0] x86/fpu: Supporting XSAVE feature 0x002: 'SSE registers' [ 2.038384][ T0] x86/fpu: Supporting XSAVE feature 0x004: 'AVX registers' [ 2.038393][ T0] x86/fpu: xstate_offset[2]: 576, xstate_sizes[2]: 256 [ 2.038404][ T0] x86/fpu: Enabled xstate features 0x7, context size is 832 bytes, using 'standard' format. [ 2.437722][ T0] pid_max: default: 32768 minimum: 301 [ 2.439910][ T0] landlock: Up and running. [ 2.439918][ T0] Yama: becoming mindful. [ 2.440487][ T0] TOMOYO Linux initialized [ 2.442123][ T0] AppArmor: AppArmor initialized [ 2.445436][ T0] LSM support for eBPF active [ 2.453341][ T0] Dentry cache hash table entries: 1048576 (order: 11, 8388608 bytes, vmalloc hugepage) [ 2.456830][ T0] Inode-cache hash table entries: 524288 (order: 10, 4194304 bytes, vmalloc hugepage) [ 2.457321][ T0] Mount-cache hash table entries: 16384 (order: 5, 131072 bytes, vmalloc) [ 2.457592][ T0] Mountpoint-cache hash table entries: 16384 (order: 5, 131072 bytes, vmalloc) [ 2.461025][ T0] VFS: Finished mounting rootfs on nullfs [ 2.467059][ T0] Running RCU synchronous self tests [ 2.467071][ T0] Running RCU synchronous self tests [ 2.588737][ T1] smpboot: CPU0: Intel(R) Xeon(R) CPU @ 2.20GHz (family: 0x6, model: 0x4f, stepping: 0x0) [ 2.594440][ T1] Performance Events: unsupported CPU family 6 model 79 no PMU driver, software events only. [ 2.594603][ T1] signal: max sigframe size: 1776 [ 2.599069][ T1] rcu: Hierarchical SRCU implementation. [ 2.599078][ T1] rcu: Max phase no-delay instances is 1000. [ 2.637490][ T1] Timer migration: 1 hierarchy levels; 8 children per group; 0 crossnode level [ 2.851554][ T1] NMI watchdog: Perf NMI watchdog permanently disabled [ 2.852839][ T1] smp: Bringing up secondary CPUs ... [ 2.869866][ T1] smpboot: x86: Booting SMP configuration: [ 2.869877][ T1] .... node #0, CPUs: #1 [ 2.872076][ 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. [ 2.872076][ 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. [ 2.872076][ 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. [ 2.872076][ T1] smp: Brought up 2 nodes, 2 CPUs [ 2.872076][ T1] smpboot: Total of 2 processors activated (8799.99 BogoMIPS) [ 2.903115][ T1] Memory: 6466032K/8388204K available (167208K kernel code, 29637K rwdata, 39784K rodata, 25492K init, 129268K bss, 1733800K reserved, 0K cma-reserved) [ 2.913498][ T1] devtmpfs: initialized [ 2.913498][ T1] x86/mm: Memory block size: 128MB [ 3.011526][ T1] Running RCU synchronous self tests [ 3.011599][ T1] Running RCU synchronous self tests [ 3.011827][ T1] Running RCU Tasks wait API self tests [ 3.017924][ T1] Running RCU Tasks Trace wait API self tests [ 3.028028][ T1] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns [ 3.028028][ T1] posixtimers hash table entries: 1024 (order: 6, 139264 bytes, vmalloc) [ 3.028247][ T1] futex hash table entries: 256 (49152 bytes on 2 NUMA nodes, total 96 KiB, linear). [ 3.038734][ T1] xor: automatically using best checksumming function avx [ 3.045624][ T1] PM: RTC time: 21:02:41, date: 2026-06-01 [ 3.064716][ T1] NET: Registered PF_NETLINK/PF_ROUTE protocol family [ 3.077554][ T10] Callback from call_rcu_tasks_trace() invoked. [ 3.081775][ T1] audit: initializing netlink subsys (disabled) [ 3.082052][ T38] audit: type=2000 audit(1780347761.406:1): state=initialized audit_enabled=0 res=1 [ 3.096373][ T1] thermal_sys: Registered thermal governor 'step_wise' [ 3.097425][ T1] cpuidle: using governor menu [ 3.098576][ T1] NET: Registered PF_QIPCRTR protocol family [ 3.111134][ T1] Freeing SMP alternatives memory: 128K [ 3.117491][ T36] Callback from call_rcu_tasks() invoked. [ 3.117491][ T1] dca service started, version 1.12.1 [ 3.117491][ T1] PCI: Using configuration type 1 for base access [ 3.147611][ T1] HugeTLB: registered 1.00 GiB page size, pre-allocated 0 pages [ 3.147647][ T1] HugeTLB: 16380 KiB vmemmap can be freed for a 1.00 GiB page [ 3.147665][ T1] HugeTLB: registered 2.00 MiB page size, pre-allocated 0 pages [ 3.147676][ T1] HugeTLB: 28 KiB vmemmap can be freed for a 2.00 MiB page [ 3.183183][ T1] raid6: using avx2x2 recovery algorithm [ 3.183200][ T1] raid6: skipped pq benchmark and selected avx2x4 [ 3.197669][ T1] ACPI: Added _OSI(Module Device) [ 3.197686][ T1] ACPI: Added _OSI(Processor Device) [ 3.197698][ T1] ACPI: Added _OSI(Processor Aggregator Device) [ 3.462350][ T1] ACPI: 2 ACPI AML tables successfully acquired and loaded [ 3.507828][ T1] ACPI: \_SB_: platform _OSC: OS support mask [000e7eee] [ 3.547036][ T1] ACPI: Interpreter enabled [ 3.549989][ T1] ACPI: PM: (supports S0 S3 S4 S5) [ 3.550073][ T1] ACPI: Using IOAPIC for interrupt routing [ 3.550970][ T1] PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug [ 3.550984][ T1] PCI: Ignoring E820 reservations for host bridge windows [ 3.571575][ T1] ACPI: Enabled 16 GPEs in block 00 to 0F [ 3.954281][ T1] ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-ff]) [ 3.954430][ T1] acpi PNP0A03:00: _OSC: OS supports [ASPM ClockPM Segments MSI HPX-Type3] [ 3.954460][ T1] acpi PNP0A03:00: _OSC: not requesting OS control; OS requires [ExtendedConfig ASPM ClockPM MSI] [ 3.954915][ T1] acpi PNP0A03:00: _OSC: platform retains control of PCIe features (AE_ERROR) [ 3.955884][ T1] acpi PNP0A03:00: fail to add MMCONFIG information, can't access extended configuration space under this bridge [ 4.006447][ T1] PCI host bridge to bus 0000:00 [ 4.006467][ T1] pci_bus 0000:00: Unknown NUMA node; performance will be reduced [ 4.007086][ T1] pci_bus 0000:00: root bus resource [io 0x0000-0x0cf7 window] [ 4.007132][ T1] pci_bus 0000:00: root bus resource [io 0x0d00-0xffff window] [ 4.007175][ T1] pci_bus 0000:00: root bus resource [mem 0x000a0000-0x000bffff window] [ 4.007218][ T1] pci_bus 0000:00: root bus resource [mem 0xc0000000-0xfebfefff window] [ 4.007269][ T1] pci_bus 0000:00: root bus resource [bus 00-ff] [ 4.029214][ T1] pci 0000:00:00.0: [8086:1237] type 00 class 0x060000 conventional PCI endpoint [ 4.034856][ T1] pci 0000:00:01.0: [8086:7110] type 00 class 0x060100 conventional PCI endpoint [ 4.056024][ T1] pci 0000:00:01.3: [8086:7113] type 00 class 0x068000 conventional PCI endpoint [ 4.067953][ T1] pci 0000:00:01.3: quirk: [io 0xb000-0xb03f] claimed by PIIX4 ACPI [ 4.080967][ T1] pci 0000:00:03.0: [1af4:1004] type 00 class 0x000000 conventional PCI endpoint [ 4.086305][ T1] pci 0000:00:03.0: BAR 0 [io 0xc000-0xc03f] [ 4.086359][ T1] pci 0000:00:03.0: BAR 1 [mem 0xfe800000-0xfe80007f] [ 4.106082][ T1] pci 0000:00:04.0: [1af4:1000] type 00 class 0x020000 conventional PCI endpoint [ 4.114231][ T1] pci 0000:00:04.0: BAR 0 [io 0xc040-0xc07f] [ 4.114285][ T1] pci 0000:00:04.0: BAR 1 [mem 0xfe801000-0xfe80107f] [ 4.123535][ T1] pci 0000:00:05.0: [1ae0:a002] type 00 class 0x030000 conventional PCI endpoint [ 4.170234][ T1] pci 0000:00:05.0: BAR 0 [mem 0xfe000000-0xfe7fffff] [ 4.171348][ T1] pci 0000:00:05.0: Video device with shadowed ROM at [mem 0x000c0000-0x000dffff] [ 4.189259][ T1] pci 0000:00:06.0: [1af4:1002] type 00 class 0x00ff00 conventional PCI endpoint [ 4.194016][ T1] pci 0000:00:06.0: BAR 0 [io 0xc080-0xc09f] [ 4.209894][ T1] pci 0000:00:07.0: [1af4:1005] type 00 class 0x00ff00 conventional PCI endpoint [ 4.214103][ T1] pci 0000:00:07.0: BAR 0 [io 0xc0a0-0xc0bf] [ 4.214155][ T1] pci 0000:00:07.0: BAR 1 [mem 0xfe802000-0xfe80203f] [ 4.292170][ T1] ACPI: PCI: Interrupt link LNKA configured for IRQ 10 [ 4.305538][ T1] ACPI: PCI: Interrupt link LNKB configured for IRQ 10 [ 4.318927][ T1] ACPI: PCI: Interrupt link LNKC configured for IRQ 11 [ 4.332319][ T1] ACPI: PCI: Interrupt link LNKD configured for IRQ 11 [ 4.341243][ T1] ACPI: PCI: Interrupt link LNKS configured for IRQ 9 [ 4.387492][ T1] iommu: Default domain type: Translated [ 4.387509][ T1] iommu: DMA domain TLB invalidation policy: lazy mode [ 4.401104][ T1] SCSI subsystem initialized [ 4.413303][ T1] ACPI: bus type USB registered [ 4.414919][ T1] usbcore: registered new interface driver usbfs [ 4.415742][ T1] usbcore: registered new interface driver hub [ 4.416206][ T1] usbcore: registered new device driver usb [ 4.430540][ T1] mc: Linux media interface: v0.10 [ 4.431210][ T1] videodev: Linux video capture interface: v2.00 [ 4.432890][ T1] pps_core: LinuxPPS API ver. 1 registered [ 4.432902][ T1] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti [ 4.433106][ T1] PTP clock support registered [ 4.448112][ T1] EDAC MC: Ver: 3.0.0 [ 4.483492][ T1] Advanced Linux Sound Architecture Driver Initialized. [ 4.504406][ T1] Bluetooth: Core ver 2.22 [ 4.504759][ T1] NET: Registered PF_BLUETOOTH protocol family [ 4.504770][ T1] Bluetooth: HCI device and connection manager initialized [ 4.504919][ T1] Bluetooth: HCI socket layer initialized [ 4.504962][ T1] Bluetooth: L2CAP socket layer initialized [ 4.505162][ T1] Bluetooth: SCO socket layer initialized [ 4.505345][ T1] NET: Registered PF_ATMPVC protocol family [ 4.505357][ T1] NET: Registered PF_ATMSVC protocol family [ 4.506154][ T1] NetLabel: Initializing [ 4.506162][ T1] NetLabel: domain hash size = 128 [ 4.506173][ T1] NetLabel: protocols = UNLABELED CIPSOv4 CALIPSO [ 4.507048][ T1] NetLabel: unlabeled traffic allowed by default [ 4.540632][ T1] nfc: nfc_init: NFC Core ver 0.1 [ 4.541373][ T1] NET: Registered PF_NFC protocol family [ 4.541555][ T1] mctp: management component transport protocol core [ 4.541568][ T1] NET: Registered PF_MCTP protocol family [ 4.542577][ T1] PCI: Using ACPI for IRQ routing [ 4.543062][ T1] e820: register RAM buffer resource [mem 0x0009fc00-0x0009ffff] [ 4.543169][ T1] e820: register RAM buffer resource [mem 0xbfffd000-0xbfffffff] [ 4.544352][ T1] pci 0000:00:05.0: vgaarb: setting as boot VGA device [ 4.544352][ T1] pci 0000:00:05.0: vgaarb: bridge control possible [ 4.544352][ T1] pci 0000:00:05.0: vgaarb: VGA device added: decodes=io+mem,owns=io+mem,locks=none [ 4.544352][ T1] vgaarb: loaded [ 4.569495][ T1] clocksource: Switched to clocksource kvm-clock [ 4.584345][ T1] VFS: Disk quotas dquot_6.6.0 [ 4.585070][ T1] VFS: Dquot-cache hash table entries: 512 (4096 bytes) [ 4.599265][ T1] netfs: FS-Cache loaded [ 4.602450][ T1] CacheFiles: Loaded [ 4.604221][ T1] TOMOYO: 2.6.0 [ 4.604232][ T1] Mandatory Access Control activated. [ 4.619003][ T1] AppArmor: AppArmor Filesystem Enabled [ 4.620234][ T1] pnp: PnP ACPI init [ 4.676903][ T1] pnp: PnP ACPI: found 6 devices [ 4.808977][ T1] clocksource: acpi_pm: mask: 0xffffff max_cycles: 0xffffff, max_idle_ns: 2085701024 ns [ 4.811661][ T1] NET: Registered PF_INET protocol family [ 4.814315][ T1] IP idents hash table entries: 131072 (order: 8, 1048576 bytes, vmalloc) [ 4.840234][ T1] tcp_listen_portaddr_hash hash table entries: 4096 (order: 8, 557056 bytes, vmalloc) [ 4.841305][ T1] Table-perturb hash table entries: 65536 (order: 6, 262144 bytes, vmalloc) [ 4.842442][ T1] TCP established hash table entries: 65536 (order: 7, 524288 bytes, vmalloc) [ 4.876568][ T1] TCP bind hash table entries: 65536 (order: 13, 17825792 bytes, vmalloc hugepage) [ 4.897609][ T1] TCP: Hash tables configured (established 65536 bind 65536) [ 4.901898][ T1] MPTCP token hash table entries: 8192 (order: 9, 1245184 bytes, vmalloc) [ 4.905708][ T1] UDP hash table entries: 4096 (order: 9, 1835008 bytes, vmalloc) [ 4.920288][ T1] NET: Registered PF_UNIX/PF_LOCAL protocol family [ 4.938745][ T1] RPC: Registered named UNIX socket transport module. [ 4.938765][ T1] RPC: Registered udp transport module. [ 4.938778][ T1] RPC: Registered tcp transport module. [ 4.938789][ T1] RPC: Registered tcp-with-tls transport module. [ 4.938801][ T1] RPC: Registered tcp NFSv4.1 backchannel transport module. [ 4.954721][ T1] NET: Registered PF_XDP protocol family [ 4.955013][ T1] pci_bus 0000:00: resource 4 [io 0x0000-0x0cf7 window] [ 4.955039][ T1] pci_bus 0000:00: resource 5 [io 0x0d00-0xffff window] [ 4.955060][ T1] pci_bus 0000:00: resource 6 [mem 0x000a0000-0x000bffff window] [ 4.955081][ T1] pci_bus 0000:00: resource 7 [mem 0xc0000000-0xfebfefff window] [ 4.976747][ T1] pci 0000:00:00.0: Limiting direct PCI/PCI transfers [ 4.979978][ T1] PCI: CLS 0 bytes, default 64 [ 4.982243][ T1] PCI-DMA: Using software bounce buffering for IO (SWIOTLB) [ 4.982261][ T1] software IO TLB: mapped [mem 0x00000000b4600000-0x00000000b8600000] (64MB) [ 4.984120][ T1] ACPI: bus type thunderbolt registered [ 5.011478][ T68] kworker/u8:4 (68) used greatest stack depth: 27256 bytes left [ 5.016710][ T1] RAPL PMU: API unit is 2^-32 Joules, 0 fixed counters, 10737418240 ms ovfl timer [ 5.073275][ T1] kvm_amd: CPU 0 isn't AMD or Hygon [ 5.073313][ T1] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x1fb63109b96, max_idle_ns: 440795265316 ns [ 5.074326][ T1] clocksource: Switched to clocksource tsc [ 5.116595][ T85] kworker/u8:1 (85) used greatest stack depth: 25960 bytes left [ 5.149655][ T1] Initialise system trusted keyrings [ 5.152756][ T1] workingset: timestamp_bits=40 (anon: 35) max_order=21 bucket_order=0 (anon: 0) [ 5.173454][ T1] DLM installed [ 5.184319][ T1] squashfs: version 4.0 (2009/01/31) Phillip Lougher [ 5.202158][ T1] NFS: Registering the id_resolver key type [ 5.202338][ T1] Key type id_resolver registered [ 5.202353][ T1] Key type id_legacy registered [ 5.202721][ T1] nfs4filelayout_init: NFSv4 File Layout Driver Registering... [ 5.202949][ T1] nfs4flexfilelayout_init: NFSv4 Flexfile Layout Driver Registering... [ 5.223850][ T1] smbdirect: subsystem loading... [ 5.241899][ T1] smbdirect: subsystem loaded [ 5.273378][ T1] Key type cifs.spnego registered [ 5.273882][ T1] Key type cifs.idmap registered [ 5.285159][ T1] ntfs3: Enabled Linux POSIX ACLs support [ 5.285173][ T1] ntfs3: Read-only LZX/Xpress compression included [ 5.285709][ T1] efs: 1.0a - http://aeschi.ch.eu.org/efs/ [ 5.285911][ T1] jffs2: version 2.2. (NAND) (SUMMARY) © 2001-2006 Red Hat, Inc. [ 5.301661][ T1] romfs: ROMFS MTD (C) 2007 Red Hat, Inc. [ 5.302131][ T1] QNX4 filesystem 0.2.3 registered. [ 5.302284][ T1] qnx6: QNX6 filesystem 1.0.0 registered. [ 5.303735][ T1] fuse: init (API version 7.45) [ 5.322171][ T1] orangefs_debugfs_init: called with debug mask: :none: :0: [ 5.325116][ T1] orangefs_init: module version upstream loaded [ 5.326919][ T1] JFS: nTxBlock = 8192, nTxLock = 65536 [ 5.353439][ T1] SGI XFS with ACLs, security attributes, realtime, quota, no debug enabled [ 5.368846][ T1] 9p: Installing v9fs 9p2000 file system support [ 5.369958][ T1] NILFS version 2 loaded [ 5.369971][ T1] befs: version: 0.9.3 [ 5.371556][ T1] ocfs2: Registered cluster interface o2cb [ 5.372876][ T1] ocfs2: Registered cluster interface user [ 5.374614][ T1] OCFS2 User DLM kernel interface loaded [ 5.428078][ T1] gfs2: GFS2 installed [ 5.453114][ T1] ceph: loaded (mds proto 32) [ 5.480715][ T1] NET: Registered PF_ALG protocol family [ 5.481276][ T1] async_tx: api initialized (async) [ 5.481379][ T1] Key type asymmetric registered [ 5.481473][ T1] Asymmetric key parser 'x509' registered [ 5.481492][ T1] Asymmetric key parser 'pkcs8' registered [ 5.481508][ T1] Key type pkcs7_test registered [ 5.483284][ T1] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 239) [ 5.485929][ T1] io scheduler mq-deadline registered [ 5.485951][ T1] io scheduler kyber registered [ 5.486684][ T1] io scheduler bfq registered [ 5.553961][ T1] input: Power Button as /devices/platform/LNXPWRBN:00/input/input0 [ 5.558767][ T1] ACPI: button: Power Button [PWRF] [ 5.570192][ T1] input: Sleep Button as /devices/platform/LNXSLPBN:00/input/input1 [ 5.573790][ T1] ACPI: button: Sleep Button [SLPF] [ 5.606662][ T1] ioatdma: Intel(R) QuickData Technology Driver 5.00 [ 5.664550][ T1] ACPI: \_SB_.LNKC: Enabled at IRQ 11 [ 5.664805][ T1] virtio-pci 0000:00:03.0: virtio_pci: leaving for legacy driver [ 5.679718][ T200] kworker/u8:1 (200) used greatest stack depth: 25920 bytes left [ 5.728668][ T1] ACPI: \_SB_.LNKD: Enabled at IRQ 10 [ 5.728908][ T1] virtio-pci 0000:00:04.0: virtio_pci: leaving for legacy driver [ 5.786458][ T1] ACPI: \_SB_.LNKB: Enabled at IRQ 10 [ 5.786641][ T1] virtio-pci 0000:00:06.0: virtio_pci: leaving for legacy driver [ 5.832045][ T1] virtio-pci 0000:00:07.0: virtio_pci: leaving for legacy driver [ 6.914859][ T1] N_HDLC line discipline registered with maxframe=4096 [ 6.916975][ T1] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled [ 6.939395][ T1] 00:02: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A [ 6.969673][ T1] 00:03: ttyS1 at I/O 0x2f8 (irq = 3, base_baud = 115200) is a 16550A [ 6.998432][ T1] 00:04: ttyS2 at I/O 0x3e8 (irq = 6, base_baud = 115200) is a 16550A [ 7.029170][ T1] 00:05: ttyS3 at I/O 0x2e8 (irq = 7, base_baud = 115200) is a 16550A [ 7.076670][ T1] Non-volatile memory driver v1.3 [ 7.125122][ T1] usbcore: registered new interface driver xillyusb [ 7.140544][ T1] ACPI: bus type drm_connector registered [ 7.154499][ T1] [drm] Initialized vgem 1.0.0 for vgem on minor 0 [ 7.181737][ T1] [drm] Initialized vkms 1.0.0 for vkms on minor 1 [ 7.346636][ T1] Console: switching to colour frame buffer device 128x48 [ 7.411940][ T1] faux_driver vkms: [drm] fb0: vkmsdrmfb frame buffer device [ 7.413311][ T1] usbcore: registered new interface driver udl [ 7.430491][ T1] usbcore: registered new interface driver gm12u320 [ 7.431895][ T1] usbcore: registered new interface driver gud [ 7.628116][ T862] kworker/u8:6 (862) used greatest stack depth: 25544 bytes left [ 7.655178][ T1] brd: module loaded [ 8.211444][ T1] loop: module loaded [ 8.671928][ T1] zram: Added device: zram0 [ 8.704307][ T1] null_blk: disk nullb0 created [ 8.704324][ T1] null_blk: module loaded [ 8.712281][ T1] Guest personality initialized and is inactive [ 8.718675][ T1] VMCI host device registered (name=vmci, major=10, minor=267) [ 8.718695][ T1] Initialized host personality [ 8.721555][ T1] usbcore: registered new interface driver rtsx_usb [ 8.735469][ T1] usbcore: registered new interface driver viperboard [ 8.739754][ T1] usbcore: registered new interface driver dln2 [ 8.749035][ T1] usbcore: registered new interface driver pn533_usb [ 8.767555][ T1] nfcsim 0.2 initialized [ 8.768431][ T1] usbcore: registered new interface driver port100 [ 8.770688][ T1] usbcore: registered new interface driver nfcmrvl [ 8.795986][ T1] Loading iSCSI transport class v2.0-870. [ 8.833191][ T1] virtio_scsi virtio0: 1/0/0 default/read/poll queues [ 8.888917][ T1] scsi host0: Virtio SCSI HBA [ 8.890011][ T1] blk-mq: reduced tag depth to 10240 [ 9.139680][ T1] st: Version 20160209, fixed bufsize 32768, s/g segs 256 [ 9.163570][ T161] scsi 0:0:1:0: Direct-Access Google PersistentDisk 1 PQ: 0 ANSI: 6 [ 9.203412][ T1] ------------[ cut here ]------------ [ 9.203427][ T1] workqueue: nvme_tcp_wq is using neither WQ_PERCPU or WQ_UNBOUND. Setting WQ_PERCPU. [ 9.203443][ T1] WARNING: kernel/workqueue.c:5856 at __alloc_workqueue+0x1d02/0x2070, CPU#0: swapper/0/1 [ 9.203487][ T1] Modules linked in: [ 9.203527][ T1] CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT_{RT,(full)} [ 9.203551][ T1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 9.203568][ T1] RIP: 0010:__alloc_workqueue+0x1d07/0x2070 [ 9.203638][ T1] Code: e9 36 f9 ff ff e8 89 90 37 00 e9 05 fb ff ff e8 7f 90 37 00 e9 92 fb ff ff e8 75 90 37 00 48 8d 3d ce 33 02 0e 48 8b 74 24 20 <67> 48 0f b9 3a 81 cd 00 01 00 00 e9 88 e5 ff ff e8 54 90 37 00 48 [ 9.203657][ T1] RSP: 0000:ffffc900000677a8 EFLAGS: 00010293 [ 9.203676][ T1] RAX: ffffffff818dbc1b RBX: 0000000000000000 RCX: ffff88801cec5d00 [ 9.203692][ T1] RDX: 0000000000000000 RSI: ffff888027c8d168 RDI: ffffffff8f8feff0 [ 9.203708][ T1] RBP: 0000000000000058 R08: ffff88801cec5d00 R09: 0000000000000002 [ 9.203723][ T1] R10: 0000000000000100 R11: 0000000000000102 R12: dffffc0000000000 [ 9.203738][ T1] R13: ffff888027c8d000 R14: ffffc900000678c0 R15: 0000000000000000 [ 9.203754][ T1] FS: 0000000000000000(0000) GS:ffff888125eca000(0000) knlGS:0000000000000000 [ 9.203772][ T1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 9.203787][ T1] CR2: ffff88823ffff000 CR3: 000000000ddb8000 CR4: 00000000003526f0 [ 9.203806][ T1] Call Trace: [ 9.203819][ T1] [ 9.203862][ T1] ? _raw_spin_unlock_irqrestore+0x4c/0x80 [ 9.203900][ T1] ? rt_mutex_slowunlock+0x4a7/0x8b0 [ 9.203928][ T1] ? reacquire_held_locks+0x104/0x190 [ 9.203962][ T1] ? rt_spin_lock+0x1e0/0x400 [ 9.203998][ T1] alloc_workqueue_noprof+0xe3/0x210 [ 9.204033][ T1] ? __pfx_alloc_workqueue_noprof+0x10/0x10 [ 9.204063][ T1] ? add_device_randomness+0xc1/0x100 [ 9.204091][ T1] ? __pfx_add_device_randomness+0x10/0x10 [ 9.204120][ T1] ? __pfx_nvme_fc_init_module+0x10/0x10 [ 9.204145][ T1] ? __pfx_nvme_tcp_init_module+0x10/0x10 [ 9.204169][ T1] nvme_tcp_init_module+0x27/0x100 [ 9.204195][ T1] do_one_initcall+0x250/0x870 [ 9.204226][ T1] ? __pfx_nvme_tcp_init_module+0x10/0x10 [ 9.204252][ T1] ? __pfx_do_one_initcall+0x10/0x10 [ 9.204289][ T1] ? __pfx_clockevents_program_event+0x10/0x10 [ 9.204327][ T1] ? __pfx___schedule+0x10/0x10 [ 9.204373][ T1] ? irqentry_exit+0x218/0x8b0 [ 9.204394][ T1] ? lockdep_hardirqs_on+0x7a/0x110 [ 9.204415][ T1] ? irqentry_exit+0x218/0x8b0 [ 9.204434][ T1] ? trace_irq_disable+0x3b/0x140 [ 9.204500][ T1] ? parameq+0x37/0x170 [ 9.204532][ T1] ? next_arg+0x498/0x5e0 [ 9.204557][ T1] ? parameq+0x14d/0x170 [ 9.204597][ T1] ? parse_args+0x9fc/0xb00 [ 9.204648][ T1] ? rcu_is_watching+0x15/0xb0 [ 9.204688][ T1] do_initcall_level+0x104/0x190 [ 9.204715][ T1] ? kernel_init+0x1d/0x1d0 [ 9.204742][ T1] do_initcalls+0x59/0xa0 [ 9.204771][ T1] kernel_init_freeable+0x2a6/0x3e0 [ 9.204800][ T1] ? __pfx_kernel_init+0x10/0x10 [ 9.204829][ T1] kernel_init+0x1d/0x1d0 [ 9.204854][ T1] ? __pfx_kernel_init+0x10/0x10 [ 9.204879][ T1] ret_from_fork+0x514/0xb70 [ 9.204912][ T1] ? __pfx_ret_from_fork+0x10/0x10 [ 9.204941][ T1] ? __switch_to+0xc79/0x1410 [ 9.204967][ T1] ? __pfx_kernel_init+0x10/0x10 [ 9.204996][ T1] ret_from_fork_asm+0x1a/0x30 [ 9.205044][ T1] [ 9.205062][ T1] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 9.205078][ T1] CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT_{RT,(full)} [ 9.205101][ T1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 9.205113][ T1] Call Trace: [ 9.205122][ T1] [ 9.205130][ T1] vpanic+0x56c/0xa60 [ 9.205162][ T1] ? __pfx__printk+0x10/0x10 [ 9.205183][ T1] ? __pfx_vpanic+0x10/0x10 [ 9.205212][ T1] ? is_bpf_text_address+0x292/0x2b0 [ 9.205244][ T1] ? is_bpf_text_address+0x26/0x2b0 [ 9.205284][ T1] panic+0xc5/0xd0 [ 9.205314][ T1] ? __pfx_panic+0x10/0x10 [ 9.205354][ T1] ? ret_from_fork_asm+0x1a/0x30 [ 9.205391][ T1] __warn+0x315/0x4c0 [ 9.205420][ T1] ? __alloc_workqueue+0x1d02/0x2070 [ 9.205450][ T1] ? __alloc_workqueue+0x1d02/0x2070 [ 9.205479][ T1] __report_bug+0x339/0x540 [ 9.205500][ T1] ? do_initcalls+0x59/0xa0 [ 9.205524][ T1] ? kernel_init_freeable+0x2a6/0x3e0 [ 9.205550][ T1] ? kernel_init+0x1d/0x1d0 [ 9.205581][ T1] ? __alloc_workqueue+0x1d02/0x2070 [ 9.205617][ T1] ? __pfx___report_bug+0x10/0x10 [ 9.205660][ T1] report_bug_entry+0x19a/0x290 [ 9.205684][ T1] ? __alloc_workqueue+0x1d07/0x2070 [ 9.205710][ T1] ? __alloc_workqueue+0x1d0c/0x2070 [ 9.205738][ T1] handle_bug+0xce/0x200 [ 9.205764][ T1] exc_invalid_op+0x1a/0x50 [ 9.205789][ T1] asm_exc_invalid_op+0x1a/0x20 [ 9.205811][ T1] RIP: 0010:__alloc_workqueue+0x1d07/0x2070 [ 9.205840][ T1] Code: e9 36 f9 ff ff e8 89 90 37 00 e9 05 fb ff ff e8 7f 90 37 00 e9 92 fb ff ff e8 75 90 37 00 48 8d 3d ce 33 02 0e 48 8b 74 24 20 <67> 48 0f b9 3a 81 cd 00 01 00 00 e9 88 e5 ff ff e8 54 90 37 00 48 [ 9.205858][ T1] RSP: 0000:ffffc900000677a8 EFLAGS: 00010293 [ 9.205875][ T1] RAX: ffffffff818dbc1b RBX: 0000000000000000 RCX: ffff88801cec5d00 [ 9.205892][ T1] RDX: 0000000000000000 RSI: ffff888027c8d168 RDI: ffffffff8f8feff0 [ 9.205907][ T1] RBP: 0000000000000058 R08: ffff88801cec5d00 R09: 0000000000000002 [ 9.205922][ T1] R10: 0000000000000100 R11: 0000000000000102 R12: dffffc0000000000 [ 9.205936][ T1] R13: ffff888027c8d000 R14: ffffc900000678c0 R15: 0000000000000000 [ 9.205959][ T1] ? __alloc_workqueue+0x1cfb/0x2070 [ 9.205995][ T1] ? __alloc_workqueue+0x1cfb/0x2070 [ 9.206024][ T1] ? _raw_spin_unlock_irqrestore+0x4c/0x80 [ 9.206059][ T1] ? rt_mutex_slowunlock+0x4a7/0x8b0 [ 9.206087][ T1] ? reacquire_held_locks+0x104/0x190 [ 9.206120][ T1] ? rt_spin_lock+0x1e0/0x400 [ 9.206155][ T1] alloc_workqueue_noprof+0xe3/0x210 [ 9.206190][ T1] ? __pfx_alloc_workqueue_noprof+0x10/0x10 [ 9.206220][ T1] ? add_device_randomness+0xc1/0x100 [ 9.206247][ T1] ? __pfx_add_device_randomness+0x10/0x10 [ 9.206277][ T1] ? __pfx_nvme_fc_init_module+0x10/0x10 [ 9.206300][ T1] ? __pfx_nvme_tcp_init_module+0x10/0x10 [ 9.206325][ T1] nvme_tcp_init_module+0x27/0x100 [ 9.206350][ T1] do_one_initcall+0x250/0x870 [ 9.206380][ T1] ? __pfx_nvme_tcp_init_module+0x10/0x10 [ 9.206406][ T1] ? __pfx_do_one_initcall+0x10/0x10 [ 9.206444][ T1] ? __pfx_clockevents_program_event+0x10/0x10 [ 9.206478][ T1] ? __pfx___schedule+0x10/0x10 [ 9.206524][ T1] ? irqentry_exit+0x218/0x8b0 [ 9.206545][ T1] ? lockdep_hardirqs_on+0x7a/0x110 [ 9.206567][ T1] ? irqentry_exit+0x218/0x8b0 [ 9.206594][ T1] ? trace_irq_disable+0x3b/0x140 [ 9.206636][ T1] ? parameq+0x37/0x170 [ 9.206668][ T1] ? next_arg+0x498/0x5e0 [ 9.206692][ T1] ? parameq+0x14d/0x170 [ 9.206726][ T1] ? parse_args+0x9fc/0xb00 [ 9.206777][ T1] ? rcu_is_watching+0x15/0xb0 [ 9.206817][ T1] do_initcall_level+0x104/0x190 [ 9.206846][ T1] ? kernel_init+0x1d/0x1d0 [ 9.206872][ T1] do_initcalls+0x59/0xa0 [ 9.206902][ T1] kernel_init_freeable+0x2a6/0x3e0 [ 9.206933][ T1] ? __pfx_kernel_init+0x10/0x10 [ 9.206962][ T1] kernel_init+0x1d/0x1d0 [ 9.206987][ T1] ? __pfx_kernel_init+0x10/0x10 [ 9.207013][ T1] ret_from_fork+0x514/0xb70 [ 9.207045][ T1] ? __pfx_ret_from_fork+0x10/0x10 [ 9.207075][ T1] ? __switch_to+0xc79/0x1410 [ 9.207198][ T1] ? __pfx_kernel_init+0x10/0x10 [ 9.207236][ T1] ret_from_fork_asm+0x1a/0x30 [ 9.207287][ T1] [ 9.207904][ T1] Kernel Offset: disabled