WARNING: locking bug in __clocksource_register_scale
Fallback order for Node 0: 0 1
Fallback order for Node 1: 1 0
Built 2 zonelists, mobility grouping on. Total pages: 2097051
Policy zone: Normal
mem auto-init: stack:all(zero), heap alloc:on, heap free:off
stackdepot: allocating hash table via alloc_large_system_hash
stackdepot hash table entries: 1048576 (order: 12, 16777216 bytes, linear)
stackdepot: allocating space for 8192 stack pools via memblock
**********************************************************
** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE **
** **
** This system shows unhashed kernel memory addresses **
** via the console, logs, and other interfaces. This **
** might reduce the security of your system. **
** **
** If you see this message and you are not debugging **
** the kernel, report this immediately to your system **
** administrator! **
** **
** Use hash_pointers=always to force this mode off **
** **
** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE **
**********************************************************
SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=2
allocated 167772160 bytes of page_ext
Node 0, zone DMA: page owner found early allocated 0 pages
Node 0, zone DMA32: page owner found early allocated 21120 pages
Node 0, zone Normal: page owner found early allocated 131 pages
Node 1, zone Normal: page owner found early allocated 19847 pages
Kernel/User page tables isolation: enabled
Dynamic Preempt: full
Running RCU self tests
Running RCU synchronous self tests
rcu: Preemptible hierarchical RCU implementation.
rcu: RCU lockdep checking is enabled.
rcu: RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=2.
rcu: RCU callback double-/use-after-free debug is enabled.
rcu: RCU debug extended QS entry/exit.
All grace periods are expedited (rcu_expedited).
Trampoline variant of Tasks RCU enabled.
Tracing variant of Tasks RCU enabled.
rcu: RCU calculated value of scheduler-enlistment delay is 10 jiffies.
rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2
Running RCU synchronous self tests
RCU Tasks: Setting shift to 1 and lim to 1 rcu_task_cb_adjust=1 rcu_task_cpu_ids=2.
NR_IRQS: 4352, nr_irqs: 440, preallocated irqs: 16
rcu: srcu_init: Setting srcu_struct sizes based on contention.
clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
=============================
[ BUG: Invalid wait context ]
syzkaller #0 Not tainted
-----------------------------
swapper/0/0 is trying to lock:
ffffffff8e369780 (clocksource_mutex){....}-{4:4}, at: __clocksource_register_scale+0x91d/0xff0 kernel/time/clocksource.c:1319
other info that might help us debug this:
context-{5:5}
1 lock held by swapper/0/0:
#0: ffffffff99d249f0 (&tkd->lock){....}-{2:2}, at: class_raw_spinlock_irqsave_constructor include/linux/spinlock.h:572 [inline]
#0: ffffffff99d249f0 (&tkd->lock){....}-{2:2}, at: timekeeping_init+0x1f6/0x350 kernel/time/timekeeping.c:2064
stack backtrace:
CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
print_lock_invalid_wait_context kernel/locking/lockdep.c:4830 [inline]
check_wait_context kernel/locking/lockdep.c:4902 [inline]
__lock_acquire+0xe4c/0x2df0 kernel/locking/lockdep.c:5187
lock_acquire+0x106/0x350 kernel/locking/lockdep.c:5868
__mutex_lock_common kernel/locking/mutex.c:646 [inline]
__mutex_lock+0x19d/0x15e0 kernel/locking/mutex.c:821
__clocksource_register_scale+0x91d/0xff0 kernel/time/clocksource.c:1319
__clocksource_register include/linux/clocksource.h:273 [inline]
clocksource_default_clock+0x20/0x40 kernel/time/jiffies.c:68
timekeeping_init+0x205/0x350 kernel/time/timekeeping.c:2068
start_kernel+0x1d3/0x3e0 init/main.c:1087
x86_64_start_reservations+0x24/0x30 arch/x86/kernel/head64.c:310
x86_64_start_kernel+0x137/0x1b0 arch/x86/kernel/head64.c:291
common_startup_64+0x13e/0x157
kfence: initialized - using 2097152 bytes for 255 objects at 0xffff88823be00000-0xffff88823c000000
Console: colour VGA+ 80x25
printk: legacy console [ttyS0] enabled
printk: legacy console [ttyS0] enabled
printk: legacy bootconsole [earlyser0] disabled
printk: legacy bootconsole [earlyser0] disabled
Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar
... MAX_LOCKDEP_SUBCLASSES: 8
... MAX_LOCK_DEPTH: 48
... MAX_LOCKDEP_KEYS: 8192
... CLASSHASH_SIZE: 4096
... MAX_LOCKDEP_ENTRIES: 1048576
... MAX_LOCKDEP_CHAINS: 1048576
... CHAINHASH_SIZE: 524288
memory used by lock dependency info: 106625 kB
memory used for stack traces: 8320 kB
per task-struct memory footprint: 1920 bytes
mempolicy: Enabling automatic NUMA balancing. Configure with numa_balancing= or the kernel.numa_balancing sysctl
ACPI: Core revision 20260408
APIC: Switch to symmetric I/O mode setup
x2apic enabled
APIC: Switched APIC routing to: physical x2apic
..TIMER: vector=0x30 apic1=0 pin1=0 apic2=-1 pin2=-1
clocksource: tsc-early: mask: 0xffffffffffffffff max_cycles: 0x1fb63109b96, max_idle_ns: 440795265316 ns
Calibrating delay loop (skipped) preset value.. 4399.99 BogoMIPS (lpj=21999980)
numa_add_cpu cpu 0 node 0: mask now 0
numa_add_cpu cpu 0 node 1: mask now 0
Last level iTLB entries: 4KB 64, 2MB 8, 4MB 8
Last level dTLB entries: 4KB 64, 2MB 32, 4MB 32, 1GB 4
mitigations: Enabled attack vectors: user_kernel, user_user, guest_host, guest_guest, SMT mitigations: auto
Speculative Store Bypass: Mitigation: Speculative Store Bypass disabled via prctl
Spectre V2 : Mitigation: IBRS
RETBleed: Mitigation: IBRS
ITS: Mitigation: Aligned branch/return thunks
Spectre V2 : User space: Mitigation: STIBP via prctl
MDS: Mitigation: Clear CPU buffers
TAA: Mitigation: Clear CPU buffers
MMIO Stale Data: Vulnerable: Clear CPU buffers attempted, no microcode
Spectre V1 : Mitigation: usercopy/swapgs barriers and __user pointer sanitization
Spectre V2 : Spectre v2 / SpectreRSB: Filling RSB on context switch and VMEXIT
Spectre V2 : mitigation: Enabling conditional Indirect Branch Prediction Barrier
active return thunk: its_return_thunk
Spectre V2 : Spectre BHI mitigation: SW BHB clearing on syscall and VM exit
x86/fpu: Supporting XSAVE feature 0x001: 'x87 floating point registers'
x86/fpu: Supporting XSAVE feature 0x002: 'SSE registers'
x86/fpu: Supporting XSAVE feature 0x004: 'AVX registers'
x86/fpu: xstate_offset[2]: 576, xstate_sizes[2]: 256
x86/fpu: Enabled xstate features 0x7, context size is 832 bytes, using 'standard' format.
pid_max: default: 32768 minimum: 301
landlock: Up and running.
Yama: becoming mindful.
TOMOYO Linux initialized
AppArmor: AppArmor initialized
LSM support for eBPF active
Dentry cache hash table entries: 1048576 (order: 11, 8388608 bytes, vmalloc hugepage)
Inode-cache hash table entries: 524288 (order: 10, 4194304 bytes, vmalloc hugepage)
Mount-cache hash table entries: 16384 (order: 5, 131072 bytes, vmalloc)
Mountpoint-cache hash table entries: 16384 (order: 5, 131072 bytes, vmalloc)
VFS: Finished mounting rootfs on nullfs
Running RCU synchronous self tests
Running RCU synchronous self tests
numa_add_cpu cpu 1 node 0: mask now 0-1
numa_add_cpu cpu 1 node 1: mask now 0-1
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@10.128.0.116" "pwd"]: exit status 255
ssh: connect to host 10.128.0.116 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-f.ci2-linux-6-6-kasan-perf-test-job-parallel-1 port 1 (session ID: ae354c38d6ebeb12b974372c7ea0c009bf6cd7013a0e4d5c9207a0c4b8d72501, 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 d3ffaa15-a0d7-d64d-ca67-835af2f1d547
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 22.1.6 (++20260514074242+fc4aad7b5db3-1~exp1~20260514074407.73), Debian LLD 22.1.6) #0 SMP PREEMPT_DYNAMIC now
[ 0.000000][ T0] Command line: BOOT_IMAGE=/boot/bzImage root=/dev/sda1 console=ttyS0
[ 0.000000][ T0] KERNEL supported cpus:
[ 0.000000][ T0] Intel GenuineIntel
[ 0.000000][ T0] AMD AuthenticAMD
[ 0.000000][ T0] x86/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
[ 0.000007][ T0] kvm-clock: using sched offset of 8633252194 cycles
[ 0.002060][ T0] clocksource: kvm-clock: mask: 0xffffffffffffffff max_cycles: 0x1cd42e4dffb, max_idle_ns: 881590591483 ns
[ 0.009132][ T0] tsc: Detected 2199.998 MHz processor
[ 0.016308][ T0] last_pfn = 0x240000 max_arch_pfn = 0x400000000
[ 0.019352][ T0] MTRR map: 4 entries (3 fixed + 1 variable; max 19), built from 8 variable MTRRs
[ 0.023346][ T0] x86/PAT: Configuration [0-7]: WB WC UC- UC WB WP UC- WT
[ 0.026210][ T0] last_pfn = 0xbfffd max_arch_pfn = 0x400000000
[ 0.033604][ T0] found SMP MP-table at [mem 0x000f2890-0x000f289f]
[ 0.037200][ T0] Using GB pages for direct mapping
[ 0.042453][ T0] ACPI: Early table checksum verification disabled
[ 0.045210][ T0] ACPI: RSDP 0x00000000000F2610 000014 (v00 Google)
[ 0.047985][ T0] ACPI: RSDT 0x00000000BFFFFFB0 000038 (v01 Google GOOGRSDT 00000001 GOOG 00000001)
[ 0.052303][ T0] ACPI: FACP 0x00000000BFFFF370 0000F4 (v02 Google GOOGFACP 00000001 GOOG 00000001)
[ 0.056233][ T0] ACPI: DSDT 0x00000000BFFFD900 001A64 (v01 Google GOOGDSDT 00000001 GOOG 00000001)
[ 0.059852][ T0] ACPI: FACS 0x00000000BFFFD8C0 000040
[ 0.061935][ T0] ACPI: FACS 0x00000000BFFFD8C0 000040
[ 0.064037][ T0] ACPI: SRAT 0x00000000BFFFFEA0 0000C8 (v03 Google GOOGSRAT 00000001 GOOG 00000001)
[ 0.068076][ T0] ACPI: APIC 0x00000000BFFFFDF0 000076 (v05 Google GOOGAPIC 00000001 GOOG 00000001)
[ 0.072290][ T0] ACPI: SSDT 0x00000000BFFFF470 000980 (v01 Google GOOGSSDT 00000001 GOOG 00000001)
[ 0.077084][ T0] ACPI: WAET 0x00000000BFFFFE70 000028 (v01 Google GOOGWAET 00000001 GOOG 00000001)
[ 0.080937][ T0] ACPI: Reserving FACP table memory at [mem 0xbffff370-0xbffff463]
[ 0.083909][ T0] ACPI: Reserving DSDT table memory at [mem 0xbfffd900-0xbffff363]
[ 0.086717][ T0] ACPI: Reserving FACS table memory at [mem 0xbfffd8c0-0xbfffd8ff]
[ 0.089662][ T0] ACPI: Reserving FACS table memory at [mem 0xbfffd8c0-0xbfffd8ff]
[ 0.093575][ T0] ACPI: Reserving SRAT table memory at [mem 0xbffffea0-0xbfffff67]
[ 0.096652][ T0] ACPI: Reserving APIC table memory at [mem 0xbffffdf0-0xbffffe65]
[ 0.099725][ T0] ACPI: Reserving SSDT table memory at [mem 0xbffff470-0xbffffdef]
[ 0.102456][ T0] ACPI: Reserving WAET table memory at [mem 0xbffffe70-0xbffffe97]
[ 0.105533][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x00000000-0x0009ffff]
[ 0.108053][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x00100000-0xbfffffff]
[ 0.110452][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x100000000-0x23fffffff]
[ 0.113293][ T0] NUMA: Node 0 [mem 0x00001000-0x0009ffff] + [mem 0x00100000-0xbfffffff] -> [mem 0x00001000-0xbfffffff]
[ 0.117275][ T0] NUMA: Node 0 [mem 0x00001000-0xbfffffff] + [mem 0x100000000-0x23fffffff] -> [mem 0x00001000-0x23fffffff]
[ 0.121310][ T0] Faking node 0 at [mem 0x0000000000001000-0x0000000140000fff] (5120MB)
[ 0.124464][ T0] Faking node 1 at [mem 0x0000000140001000-0x000000023fffffff] (4095MB)
[ 0.127563][ T0] NODE_DATA(0) allocated [mem 0x13fffb100-0x140000fff]
[ 0.131949][ T0] NODE_DATA(1) allocated [mem 0x23fff7100-0x23fffcfff]
[ 0.429149][ T0] KernelAddressSanitizer initialized (generic)
[ 0.432303][ T0] ACPI: PM-Timer IO Port: 0xb008
[ 0.434048][ T0] ACPI: LAPIC_NMI (acpi_id[0xff] dfl dfl lint[0x1])
[ 0.436478][ T0] IOAPIC[0]: apic_id 0, version 17, address 0xfec00000, GSI 0-23
[ 0.439325][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 high level)
[ 0.442151][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
[ 0.444711][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 high level)
[ 0.447771][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 high level)
[ 0.450282][ T0] ACPI: Using ACPI (MADT) for SMP configuration information
[ 0.453048][ T0] CPU topo: Max. logical packages: 1
[ 0.455090][ T0] CPU topo: Max. logical nodes: 1
[ 0.456981][ T0] CPU topo: Num. nodes per package: 1
[ 0.459153][ T0] CPU topo: Max. logical dies: 1
[ 0.460926][ T0] CPU topo: Max. dies per package: 1
[ 0.462654][ T0] CPU topo: Max. threads per core: 2
[ 0.464480][ T0] CPU topo: Num. cores per package: 1
[ 0.466684][ T0] CPU topo: Num. threads per package: 2
[ 0.469040][ T0] CPU topo: Allowing 2 present CPUs plus 0 hotplug CPUs
[ 0.472100][ T0] PM: hibernation: Registered nosave memory: [mem 0x00000000-0x00000fff]
[ 0.475537][ T0] PM: hibernation: Registered nosave memory: [mem 0x0009f000-0x000fffff]
[ 0.478803][ T0] PM: hibernation: Registered nosave memory: [mem 0xbfffd000-0xffffffff]
[ 0.482252][ T0] [gap 0xc0000000-0xfffbbfff] available for PCI devices
[ 0.485094][ T0] Booting paravirtualized kernel on KVM
[ 0.487161][ T0] clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[ 0.625687][ T0] Zone ranges:
[ 0.627177][ T0] DMA [mem 0x0000000000001000-0x0000000000ffffff]
[ 0.629450][ T0] DMA32 [mem 0x0000000001000000-0x00000000ffffffff]
[ 0.632124][ T0] Normal [mem 0x0000000100000000-0x000000023fffffff]
[ 0.634756][ T0] Device empty
[ 0.636600][ T0] Movable zone start for each node
[ 0.638455][ T0] Early memory node ranges
[ 0.639850][ T0] node 0: [mem 0x0000000000001000-0x000000000009efff]
[ 0.642622][ T0] node 0: [mem 0x0000000000100000-0x00000000bfffcfff]
[ 0.645529][ T0] node 0: [mem 0x0000000100000000-0x0000000140000fff]
[ 0.648433][ T0] node 1: [mem 0x0000000140001000-0x000000023fffffff]
[ 0.651407][ T0] Initmem setup node 0 [mem 0x0000000000001000-0x0000000140000fff]
[ 0.654302][ T0] Initmem setup node 1 [mem 0x0000000140001000-0x000000023fffffff]
[ 0.657922][ T0] On node 0, zone DMA: 1 pages in unavailable ranges
[ 0.660401][ T0] On node 0, zone DMA: 97 pages in unavailable ranges
[ 0.729612][ T0] On node 0, zone Normal: 3 pages in unavailable ranges
[ 0.800485][ T0] setup_percpu: NR_CPUS:8 nr_cpumask_bits:2 nr_cpu_ids:2 nr_node_ids:2
[ 0.805019][ T0] percpu: Embedded 71 pages/cpu s250888 r8192 d31736 u1048576
[ 0.808771][ T0] kvm-guest: PV spinlocks enabled
[ 0.811023][ T0] PV qspinlock hash table entries: 256 (order: 0, 4096 bytes, linear)
[ 0.813891][ 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 \
[ 0.851826][ T0] Kernel command line: comedi.comedi_num_legacy_minors=4 panic_on_warn=1 BOOT_IMAGE=/boot/bzImage root=/dev/sda1 console=ttyS0
[ 0.863228][ T0] Unknown kernel command line parameters "nbds_max=32", will be passed to user space.
[ 0.867667][ T0] random: crng init done
[ 0.869187][ T0] printk: log buffer data + meta data: 262144 + 917504 = 1179648 bytes
[ 0.872970][ T0] software IO TLB: area num 2.
[ 0.903021][ T0] Fallback order for Node 0: 0 1
[ 0.903042][ T0] Fallback order for Node 1: 1 0
[ 0.903055][ T0] Built 2 zonelists, mobility grouping on. Total pages: 2097051
[ 0.910766][ T0] Policy zone: Normal
[ 0.913191][ T0] mem auto-init: stack:all(zero), heap alloc:on, heap free:off
[ 0.916811][ T0] stackdepot: allocating hash table via alloc_large_system_hash
[ 0.919888][ T0] stackdepot hash table entries: 1048576 (order: 12, 16777216 bytes, linear)
[ 0.927836][ T0] stackdepot: allocating space for 8192 stack pools via memblock
[ 1.632556][ T0] **********************************************************
[ 1.636140][ T0] ** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE **
[ 1.638978][ T0] ** **
[ 1.641305][ T0] ** This system shows unhashed kernel memory addresses **
[ 1.643892][ T0] ** via the console, logs, and other interfaces. This **
[ 1.646636][ T0] ** might reduce the security of your system. **
[ 1.649491][ T0] ** **
[ 1.651876][ T0] ** If you see this message and you are not debugging **
[ 1.654437][ T0] ** the kernel, report this immediately to your system **
[ 1.656810][ T0] ** administrator! **
[ 1.659274][ T0] ** **
[ 1.662257][ T0] ** Use hash_pointers=always to force this mode off **
[ 1.665323][ T0] ** **
[ 1.667850][ T0] ** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE **
[ 1.670732][ T0] **********************************************************
[ 1.676533][ T0] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=2
[ 1.790693][ T0] allocated 167772160 bytes of page_ext
[ 1.792504][ T0] Node 0, zone DMA: page owner found early allocated 0 pages
[ 1.809245][ T0] Node 0, zone DMA32: page owner found early allocated 21120 pages
[ 1.816812][ T0] Node 0, zone Normal: page owner found early allocated 131 pages
[ 1.830594][ T0] Node 1, zone Normal: page owner found early allocated 19847 pages
[ 1.834100][ T0] Kernel/User page tables isolation: enabled
[ 1.837976][ T0] Dynamic Preempt: full
[ 1.840729][ T0] Running RCU self tests
[ 1.841940][ T0] Running RCU synchronous self tests
[ 1.843782][ T0] rcu: Preemptible hierarchical RCU implementation.
[ 1.846406][ T0] rcu: RCU lockdep checking is enabled.
[ 1.848493][ T0] rcu: RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=2.
[ 1.851080][ T0] rcu: RCU callback double-/use-after-free debug is enabled.
[ 1.853705][ T0] rcu: RCU debug extended QS entry/exit.
[ 1.855696][ T0] All grace periods are expedited (rcu_expedited).
[ 1.857827][ T0] Trampoline variant of Tasks RCU enabled.
[ 1.859801][ T0] Tracing variant of Tasks RCU enabled.
[ 1.861690][ T0] rcu: RCU calculated value of scheduler-enlistment delay is 10 jiffies.
[ 1.864218][ T0] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2
[ 1.867071][ T0] Running RCU synchronous self tests
[ 1.869195][ T0] RCU Tasks: Setting shift to 1 and lim to 1 rcu_task_cb_adjust=1 rcu_task_cpu_ids=2.
[ 2.016941][ T0] NR_IRQS: 4352, nr_irqs: 440, preallocated irqs: 16
[ 2.020987][ T0] rcu: srcu_init: Setting srcu_struct sizes based on contention.
[ 2.024724][ T0] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[ 2.030372][ T0]
[ 2.031311][ T0] =============================
[ 2.033563][ T0] [ BUG: Invalid wait context ]
[ 2.035775][ T0] syzkaller #0 Not tainted
[ 2.037581][ T0] -----------------------------
[ 2.039358][ T0] swapper/0/0 is trying to lock:
[ 2.041507][ T0] ffffffff8e369780 (clocksource_mutex){....}-{4:4}, at: __clocksource_register_scale+0x91d/0xff0
[ 2.045888][ T0] other info that might help us debug this:
[ 2.047827][ T0] context-{5:5}
[ 2.049077][ T0] 1 lock held by swapper/0/0:
[ 2.050746][ T0] #0: ffffffff99d249f0 (&tkd->lock){....}-{2:2}, at: timekeeping_init+0x1f6/0x350
[ 2.054950][ T0] stack backtrace:
[ 2.055996][ T0] CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT(full)
[ 2.056009][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[ 2.056016][ T0] Call Trace:
[ 2.056023][ T0]
[ 2.056028][ T0] dump_stack_lvl+0xe8/0x150
[ 2.056051][ T0] __lock_acquire+0xe4c/0x2df0
[ 2.056068][ T0] ? __pfx_up+0x10/0x10
[ 2.056082][ T0] ? prb_read_valid+0x3c/0x60
[ 2.056092][ T0] ? __clocksource_register_scale+0x91d/0xff0
[ 2.056103][ T0] lock_acquire+0x106/0x350
[ 2.056116][ T0] ? __clocksource_register_scale+0x91d/0xff0
[ 2.056127][ T0] ? _printk+0xdd/0x130
[ 2.056137][ T0] ? __might_resched+0x71/0x4d0
[ 2.056154][ T0] __mutex_lock+0x19d/0x15e0
[ 2.056165][ T0] ? __clocksource_register_scale+0x91d/0xff0
[ 2.056176][ T0] ? __pfx_vprintk_emit+0x10/0x10
[ 2.056188][ T0] ? __clocksource_register_scale+0x91d/0xff0
[ 2.056200][ T0] ? __pfx___mutex_lock+0x10/0x10
[ 2.056213][ T0] ? clocksource_arch_init+0x86/0x110
[ 2.056230][ T0] __clocksource_register_scale+0x91d/0xff0
[ 2.056242][ T0] ? __hrtimer_setup+0x1b7/0x250
[ 2.056254][ T0] clocksource_default_clock+0x20/0x40
[ 2.056274][ T0] timekeeping_init+0x205/0x350
[ 2.056286][ T0] ? __pfx_timekeeping_init+0x10/0x10
[ 2.056300][ T0] ? __split_page_owner+0x2d/0x300
[ 2.056312][ T0] ? __split_page_owner+0x2d/0x300
[ 2.056321][ T0] ? vdso_setup_data_pages+0xa3/0x130
[ 2.056333][ T0] ? __asan_memcpy+0x40/0x70
[ 2.056346][ T0] start_kernel+0x1d3/0x3e0
[ 2.056356][ T0] x86_64_start_reservations+0x24/0x30
[ 2.056370][ T0] x86_64_start_kernel+0x137/0x1b0
[ 2.056383][ T0] common_startup_64+0x13e/0x157
[ 2.056398][ T0]
[ 2.056845][ T0] kfence: initialized - using 2097152 bytes for 255 objects at 0xffff88823be00000-0xffff88823c000000
[ 2.127005][ T0] Console: colour VGA+ 80x25
[ 2.128818][ T0] printk: legacy console [ttyS0] enabled
[ 2.128818][ T0] printk: legacy console [ttyS0] enabled
[ 2.133063][ T0] printk: legacy bootconsole [earlyser0] disabled
[ 2.133063][ T0] printk: legacy bootconsole [earlyser0] disabled
[ 2.137998][ T0] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar
[ 2.141797][ T0] ... MAX_LOCKDEP_SUBCLASSES: 8
[ 2.143874][ T0] ... MAX_LOCK_DEPTH: 48
[ 2.145861][ T0] ... MAX_LOCKDEP_KEYS: 8192
[ 2.147869][ T0] ... CLASSHASH_SIZE: 4096
[ 2.149867][ T0] ... MAX_LOCKDEP_ENTRIES: 1048576
[ 2.151942][ T0] ... MAX_LOCKDEP_CHAINS: 1048576
[ 2.153958][ T0] ... CHAINHASH_SIZE: 524288
[ 2.156052][ T0] memory used by lock dependency info: 106625 kB
[ 2.158912][ T0] memory used for stack traces: 8320 kB
[ 2.160851][ T0] per task-struct memory footprint: 1920 bytes
[ 2.163237][ T0] mempolicy: Enabling automatic NUMA balancing. Configure with numa_balancing= or the kernel.numa_balancing sysctl
[ 2.167383][ T0] ACPI: Core revision 20260408
[ 2.169721][ T0] APIC: Switch to symmetric I/O mode setup
[ 2.172681][ T0] x2apic enabled
[ 2.181412][ T0] APIC: Switched APIC routing to: physical x2apic
[ 2.196804][ T0] ..TIMER: vector=0x30 apic1=0 pin1=0 apic2=-1 pin2=-1
[ 2.201438][ T0] clocksource: tsc-early: mask: 0xffffffffffffffff max_cycles: 0x1fb63109b96, max_idle_ns: 440795265316 ns
[ 2.207218][ T0] Calibrating delay loop (skipped) preset value.. 4399.99 BogoMIPS (lpj=21999980)
[ 2.217865][ T0] numa_add_cpu cpu 0 node 0: mask now 0
[ 2.220417][ T0] numa_add_cpu cpu 0 node 1: mask now 0
[ 2.222588][ T0] Last level iTLB entries: 4KB 64, 2MB 8, 4MB 8
[ 2.224990][ T0] Last level dTLB entries: 4KB 64, 2MB 32, 4MB 32, 1GB 4
[ 2.227284][ T0] mitigations: Enabled attack vectors: user_kernel, user_user, guest_host, guest_guest, SMT mitigations: auto
[ 2.231476][ T0] Speculative Store Bypass: Mitigation: Speculative Store Bypass disabled via prctl
[ 2.235010][ T0] Spectre V2 : Mitigation: IBRS
[ 2.237220][ T0] RETBleed: Mitigation: IBRS
[ 2.238893][ T0] ITS: Mitigation: Aligned branch/return thunks
[ 2.241507][ T0] Spectre V2 : User space: Mitigation: STIBP via prctl
[ 2.244260][ T0] MDS: Mitigation: Clear CPU buffers
[ 2.247220][ T0] TAA: Mitigation: Clear CPU buffers
[ 2.249777][ T0] MMIO Stale Data: Vulnerable: Clear CPU buffers attempted, no microcode
[ 2.253661][ T0] Spectre V1 : Mitigation: usercopy/swapgs barriers and __user pointer sanitization
[ 2.257228][ T0] Spectre V2 : Spectre v2 / SpectreRSB: Filling RSB on context switch and VMEXIT
[ 2.260204][ T0] Spectre V2 : mitigation: Enabling conditional Indirect Branch Prediction Barrier
[ 2.263449][ T0] active return thunk: its_return_thunk
[ 2.267224][ T0] Spectre V2 : Spectre BHI mitigation: SW BHB clearing on syscall and VM exit
[ 2.271444][ T0] x86/fpu: Supporting XSAVE feature 0x001: 'x87 floating point registers'
[ 2.274943][ T0] x86/fpu: Supporting XSAVE feature 0x002: 'SSE registers'
[ 2.277221][ T0] x86/fpu: Supporting XSAVE feature 0x004: 'AVX registers'
[ 2.280235][ T0] x86/fpu: xstate_offset[2]: 576, xstate_sizes[2]: 256
[ 2.283913][ T0] x86/fpu: Enabled xstate features 0x7, context size is 832 bytes, using 'standard' format.
[ 2.648132][ T0] pid_max: default: 32768 minimum: 301
[ 2.651648][ T0] landlock: Up and running.
[ 2.653331][ T0] Yama: becoming mindful.
[ 2.655328][ T0] TOMOYO Linux initialized
[ 2.658051][ T0] AppArmor: AppArmor initialized
[ 2.662008][ T0] LSM support for eBPF active
[ 2.669504][ T0] Dentry cache hash table entries: 1048576 (order: 11, 8388608 bytes, vmalloc hugepage)
[ 2.676295][ T0] Inode-cache hash table entries: 524288 (order: 10, 4194304 bytes, vmalloc hugepage)
[ 2.677584][ T0] Mount-cache hash table entries: 16384 (order: 5, 131072 bytes, vmalloc)
[ 2.681193][ T0] Mountpoint-cache hash table entries: 16384 (order: 5, 131072 bytes, vmalloc)
[ 2.688685][ T0] VFS: Finished mounting rootfs on nullfs
[ 2.693439][ T0] Running RCU synchronous self tests
[ 2.697222][ T0] Running RCU synchronous self tests
[ 2.820681][ T1] smpboot: CPU0: Intel(R) Xeon(R) CPU @ 2.20GHz (family: 0x6, model: 0x4f, stepping: 0x0)
[ 2.827204][ T1] Performance Events: unsupported CPU family 6 model 79 no PMU driver, software events only.
[ 2.827385][ T1] signal: max sigframe size: 1776
[ 2.829898][ T1] rcu: Hierarchical SRCU implementation.
[ 2.832157][ T1] rcu: Max phase no-delay instances is 1000.
[ 2.837894][ T1] Timer migration: 1 hierarchy levels; 8 children per group; 0 crossnode level
[ 2.906709][ T1] NMI watchdog: Perf NMI watchdog permanently disabled
[ 2.908160][ T1] smp: Bringing up secondary CPUs ...
[ 2.912044][ T1] smpboot: x86: Booting SMP configuration:
[ 2.917289][ T1] .... node #0, CPUs: #1
[ 0.172505][ T0] numa_add_cpu cpu 1 node 0: mask now 0-1
[ 0.172505][ T0] numa_add_cpu cpu 1 node 1: mask now 0-1
[ 2.917899][ 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.
[ 2.927238][ 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.
[ 2.937574][ 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.
[ 2.944783][ T1] smp: Brought up 2 nodes, 2 CPUs
[ 2.947220][ T1] smpboot: Total of 2 processors activated (8799.99 BogoMIPS)
[ 2.951878][ T1] Memory: 6470388K/8388204K available (171622K kernel code, 28918K rwdata, 40016K rodata, 26172K init, 119284K bss, 1728136K reserved, 0K cma-reserved)
[ 2.959105][ T1] devtmpfs: initialized
[ 2.959303][ T1] x86/mm: Memory block size: 128MB
[ 3.012041][ T1] Running RCU synchronous self tests
[ 3.012041][ T1] Running RCU synchronous self tests
[ 3.017501][ T1] Running RCU Tasks wait API self tests
[ 3.019497][ T1] Running RCU Tasks Trace wait API self tests
[ 3.037535][ T1] posixtimers hash table entries: 1024 (order: 5, 73728 bytes, vmalloc)
[ 3.041029][ T1] futex hash table entries: 256 (32768 bytes on 2 NUMA nodes, total 64 KiB, linear).
[ 3.047598][ T1] xor: automatically using best checksumming function avx
[ 3.058288][ T1] PM: RTC time: 12:25:21, date: 2026-06-19
[ 3.067223][ T1] NET: Registered PF_NETLINK/PF_ROUTE protocol family
[ 3.075230][ T1] audit: initializing netlink subsys (disabled)
[ 3.087561][ T30] audit: type=2000 audit(1781871921.601:1): state=initialized audit_enabled=0 res=1
[ 3.093949][ T1] thermal_sys: Registered thermal governor 'step_wise'
[ 3.093963][ T1] thermal_sys: Registered thermal governor 'user_space'
[ 3.097424][ T10] Callback from call_rcu_tasks_trace() invoked.
[ 3.103882][ T1] cpuidle: using governor menu
[ 3.103882][ T1] NET: Registered PF_QIPCRTR protocol family
[ 3.108700][ T1] Freeing SMP alternatives memory: 132K
[ 3.113260][ T1] dca service started, version 1.12.1
[ 3.115576][ T1] PCI: Using configuration type 1 for base access
[ 3.157282][ T1] HugeTLB: registered 1.00 GiB page size, pre-allocated 0 pages
[ 3.161781][ T1] HugeTLB: 16380 KiB vmemmap can be freed for a 1.00 GiB page
[ 3.165155][ T1] HugeTLB: registered 2.00 MiB page size, pre-allocated 0 pages
[ 3.167250][ T1] HugeTLB: 28 KiB vmemmap can be freed for a 2.00 MiB page
[ 3.198555][ T1] raid6: skipped pq benchmark and selected avx2x4
[ 3.202185][ T1] raid6: using avx2x2 recovery algorithm
[ 3.207271][ T1] ACPI: Added _OSI(Module Device)
[ 3.209752][ T1] ACPI: Added _OSI(Processor Device)
[ 3.212609][ T1] ACPI: Added _OSI(Processor Aggregator Device)
[ 3.365264][ T1] ACPI: 2 ACPI AML tables successfully acquired and loaded
[ 3.389480][ T1] ACPI: \_SB_: platform _OSC: OS support mask [000e7eee]
[ 3.413096][ T1] ACPI: Interpreter enabled
[ 3.415556][ T1] ACPI: PM: (supports S0 S3 S4 S5)
[ 3.417223][ T1] ACPI: Using IOAPIC for interrupt routing
[ 3.420683][ T1] PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug
[ 3.424880][ T1] PCI: Ignoring E820 reservations for host bridge windows
[ 3.432281][ T1] ACPI: Enabled 16 GPEs in block 00 to 0F
[ 3.645298][ T1] ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-ff])
[ 3.647342][ T1] acpi PNP0A03:00: _OSC: OS supports [ASPM ClockPM Segments MSI HPX-Type3]
[ 3.651500][ T1] acpi PNP0A03:00: _OSC: not requesting OS control; OS requires [ExtendedConfig ASPM ClockPM MSI]
[ 3.657610][ T1] acpi PNP0A03:00: _OSC: platform retains control of PCIe features (AE_ERROR)
[ 3.662067][ T1] acpi PNP0A03:00: fail to add MMCONFIG information, can't access extended configuration space under this bridge
[ 3.683969][ T1] PCI host bridge to bus 0000:00
[ 3.686267][ T1] pci_bus 0000:00: Unknown NUMA node; performance will be reduced
[ 3.687582][ T1] pci_bus 0000:00: root bus resource [io 0x0000-0x0cf7 window]
[ 3.691581][ T1] pci_bus 0000:00: root bus resource [io 0x0d00-0xffff window]
[ 3.697235][ T1] pci_bus 0000:00: root bus resource [mem 0x000a0000-0x000bffff window]
[ 3.700673][ T1] pci_bus 0000:00: root bus resource [mem 0xc0000000-0xfebfefff window]
[ 3.704163][ T1] pci_bus 0000:00: root bus resource [bus 00-ff]
[ 3.707521][ T1] pci 0000:00:00.0: [8086:1237] type 00 class 0x060000 conventional PCI endpoint
[ 3.714357][ T1] pci 0000:00:01.0: [8086:7110] type 00 class 0x060100 conventional PCI endpoint
[ 3.723354][ T1] pci 0000:00:01.3: [8086:7113] type 00 class 0x068000 conventional PCI endpoint
[ 3.733680][ T1] pci 0000:00:01.3: quirk: [io 0xb000-0xb03f] claimed by PIIX4 ACPI
[ 3.741750][ T1] pci 0000:00:03.0: [1af4:1004] type 00 class 0x000000 conventional PCI endpoint
[ 3.757272][ T1] pci 0000:00:03.0: BAR 0 [io 0xc000-0xc03f]
[ 3.760016][ T1] pci 0000:00:03.0: BAR 1 [mem 0xfe800000-0xfe80007f]
[ 3.768700][ T1] pci 0000:00:04.0: [1af4:1000] type 00 class 0x020000 conventional PCI endpoint
[ 3.781044][ T1] pci 0000:00:04.0: BAR 0 [io 0xc040-0xc07f]
[ 3.783899][ T1] pci 0000:00:04.0: BAR 1 [mem 0xfe801000-0xfe80107f]
[ 3.792262][ T1] pci 0000:00:05.0: [1ae0:a002] type 00 class 0x030000 conventional PCI endpoint
[ 3.807354][ T1] pci 0000:00:05.0: BAR 0 [mem 0xfe000000-0xfe7fffff]
[ 3.811612][ T1] pci 0000:00:05.0: Video device with shadowed ROM at [mem 0x000c0000-0x000dffff]
[ 3.822513][ T1] pci 0000:00:06.0: [1af4:1002] type 00 class 0x00ff00 conventional PCI endpoint
[ 3.830881][ T1] pci 0000:00:06.0: BAR 0 [io 0xc080-0xc09f]
[ 3.841605][ T1] pci 0000:00:07.0: [1af4:1005] type 00 class 0x00ff00 conventional PCI endpoint
[ 3.850312][ T1] pci 0000:00:07.0: BAR 0 [io 0xc0a0-0xc0bf]
[ 3.853197][ T1] pci 0000:00:07.0: BAR 1 [mem 0xfe802000-0xfe80203f]
[ 3.894538][ T1] ACPI: PCI: Interrupt link LNKA configured for IRQ 10
[ 3.905530][ T1] ACPI: PCI: Interrupt link LNKB configured for IRQ 10
[ 3.917426][ T1] ACPI: PCI: Interrupt link LNKC configured for IRQ 11
[ 3.928378][ T1] ACPI: PCI: Interrupt link LNKD configured for IRQ 11
[ 3.937116][ T1] ACPI: PCI: Interrupt link LNKS configured for IRQ 9
[ 3.967291][ T1] iommu: Default domain type: Translated
[ 3.969708][ T1] iommu: DMA domain TLB invalidation policy: lazy mode
[ 3.973665][ T1] SCSI subsystem initialized
[ 3.973751][ T1] libata version 3.00 loaded.
[ 3.976897][ T1] ACPI: bus type USB registered
[ 3.978009][ T1] usbcore: registered new interface driver usbfs
[ 3.981463][ T1] usbcore: registered new interface driver hub
[ 3.984234][ T1] usbcore: registered new device driver usb
[ 3.989601][ T1] mc: Linux media interface: v0.10
[ 3.992952][ T1] videodev: Linux video capture interface: v2.00
[ 3.997954][ T1] pps_core: LinuxPPS API ver. 1 registered
[ 4.000670][ T1] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti
[ 4.005272][ T1] PTP clock support registered
[ 4.008274][ T1] EDAC MC: Ver: 3.0.0
[ 4.038352][ T1] Advanced Linux Sound Architecture Driver Initialized.
[ 4.048380][ T1] Bluetooth: Core ver 2.22
[ 4.050717][ T1] NET: Registered PF_BLUETOOTH protocol family
[ 4.053070][ T1] Bluetooth: HCI device and connection manager initialized
[ 4.056806][ T1] Bluetooth: HCI socket layer initialized
[ 4.057266][ T1] Bluetooth: L2CAP socket layer initialized
[ 4.060173][ T1] Bluetooth: SCO socket layer initialized
[ 4.067294][ T1] NET: Registered PF_ATMPVC protocol family
[ 4.070274][ T1] NetLabel: Initializing
[ 4.072450][ T1] NetLabel: domain hash size = 128
[ 4.074409][ T1] NetLabel: protocols = UNLABELED CIPSOv4 CALIPSO
[ 4.077769][ T1] NetLabel: unlabeled traffic allowed by default
[ 4.083130][ T1] nfc: nfc_init: NFC Core ver 0.1
[ 4.085442][ T1] NET: Registered PF_NFC protocol family
[ 4.087488][ T1] PCI: Using ACPI for IRQ routing
[ 4.089425][ T1] PCI: pci_cache_line_size set to 64 bytes
[ 4.092576][ T1] e820: register RAM buffer resource [mem 0x0009fc00-0x0009ffff]
[ 4.097264][ T1] e820: register RAM buffer resource [mem 0xbfffd000-0xbfffffff]
[ 4.101220][ T1] pci 0000:00:05.0: vgaarb: setting as boot VGA device
[ 4.104364][ T1] pci 0000:00:05.0: vgaarb: bridge control possible
[ 4.107204][ T1] pci 0000:00:05.0: vgaarb: VGA device added: decodes=io+mem,owns=io+mem,locks=none
[ 4.107233][ T1] vgaarb: loaded
[ 4.122774][ T1] clocksource: Switched to clocksource kvm-clock
[ 4.127190][ T1] VFS: Disk quotas dquot_6.6.0
[ 4.128409][ T1] VFS: Dquot-cache hash table entries: 512 (4096 bytes)
[ 4.138191][ T1] netfs: FS-Cache loaded
[ 4.141440][ T1] CacheFiles: Loaded
[ 4.144284][ T1] TOMOYO: 2.6.0
[ 4.146203][ T1] Mandatory Access Control activated.
[ 4.152185][ T1] AppArmor: AppArmor Filesystem Enabled
[ 4.156098][ T1] pnp: PnP ACPI init
[ 4.181928][ T1] pnp: PnP ACPI: found 6 devices
[ 4.238221][ T1] clocksource: acpi_pm: mask: 0xffffff max_cycles: 0xffffff, max_idle_ns: 2085701024 ns
[ 4.243903][ T1] NET: Registered PF_INET protocol family
[ 4.247946][ T1] IP idents hash table entries: 131072 (order: 8, 1048576 bytes, vmalloc)
[ 4.265559][ T1] tcp_listen_portaddr_hash hash table entries: 4096 (order: 7, 294912 bytes, vmalloc)
[ 4.270055][ T1] Table-perturb hash table entries: 65536 (order: 6, 262144 bytes, vmalloc)
[ 4.276219][ T1] TCP established hash table entries: 65536 (order: 7, 524288 bytes, vmalloc)
[ 4.288925][ T1] TCP bind hash table entries: 65536 (order: 12, 9437184 bytes, vmalloc hugepage)
[ 4.298941][ T1] TCP: Hash tables configured (established 65536 bind 65536)
[ 4.304481][ T1] MPTCP token hash table entries: 8192 (order: 8, 720896 bytes, vmalloc)
[ 4.309732][ T1] UDP hash table entries: 4096 (order: 8, 1048576 bytes, vmalloc)
[ 4.315246][ T1] NET: Registered PF_UNIX/PF_LOCAL protocol family
[ 4.331761][ T1] RPC: Registered named UNIX socket transport module.
[ 4.335769][ T1] RPC: Registered udp transport module.
[ 4.338769][ T1] RPC: Registered tcp transport module.
[ 4.341433][ T1] RPC: Registered tcp-with-tls transport module.
[ 4.344737][ T1] RPC: Registered tcp NFSv4.1 backchannel transport module.
[ 4.362371][ T1] NET: Registered PF_XDP protocol family
[ 4.365144][ T1] pci_bus 0000:00: resource 4 [io 0x0000-0x0cf7 window]
[ 4.368278][ T1] pci_bus 0000:00: resource 5 [io 0x0d00-0xffff window]
[ 4.371292][ T1] pci_bus 0000:00: resource 6 [mem 0x000a0000-0x000bffff window]
[ 4.375259][ T1] pci_bus 0000:00: resource 7 [mem 0xc0000000-0xfebfefff window]
[ 4.380407][ T1] pci 0000:00:00.0: Limiting direct PCI/PCI transfers
[ 4.384336][ T1] PCI: CLS 0 bytes, default 64
[ 4.386640][ T1] PCI-DMA: Using software bounce buffering for IO (SWIOTLB)
[ 4.392594][ T1] software IO TLB: mapped [mem 0x00000000b4600000-0x00000000b8600000] (64MB)
[ 4.398571][ T1] ACPI: bus type thunderbolt registered
[ 4.402773][ T57] kworker/u8:1 (57) used greatest stack depth: 27960 bytes left
[ 4.412079][ T1] RAPL PMU: API unit is 2^-32 Joules, 0 fixed counters, 10737418240 ms ovfl timer
[ 4.439225][ T1] kvm_amd: CPU 0 isn't AMD or Hygon
[ 4.441029][ T59] kworker/u8:1 (59) used greatest stack depth: 26856 bytes left
[ 4.441959][ T1] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x1fb63109b96, max_idle_ns: 440795265316 ns
[ 4.449821][ T1] clocksource: Switched to clocksource tsc
[ 4.475314][ T1] Initialise system trusted keyrings
[ 4.479983][ T1] workingset: timestamp_bits=40 (anon: 36) max_order=21 bucket_order=0 (anon: 0)
[ 4.490429][ T1] DLM installed
[ 4.496777][ T1] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[ 4.505918][ T1] NFS: Registering the id_resolver key type
[ 4.508624][ T1] Key type id_resolver registered
[ 4.511314][ T1] Key type id_legacy registered
[ 4.514853][ T1] nfs4filelayout_init: NFSv4 File Layout Driver Registering...
[ 4.518523][ T1] nfs4flexfilelayout_init: NFSv4 Flexfile Layout Driver Registering...
[ 4.524956][ T1] smbdirect: subsystem loading...
[ 4.533956][ T1] smbdirect: subsystem loaded
[ 4.549180][ T1] Key type cifs.spnego registered
[ 4.551595][ T1] Key type cifs.idmap registered
[ 4.559477][ T1] ------------[ cut here ]------------
[ 4.563300][ T1] workqueue: ntfs-bg-io is using neither WQ_PERCPU or WQ_UNBOUND. Setting WQ_PERCPU.
[ 4.567220][ T1] WARNING: kernel/workqueue.c:5852 at __alloc_workqueue+0x1a11/0x1d70, CPU#0: swapper/0/1
[ 4.571790][ T1] Modules linked in:
[ 4.573949][ T1] CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT(full)
[ 4.578619][ T1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[ 4.582871][ T1] RIP: 0010:__alloc_workqueue+0x1a18/0x1d70
[ 4.585232][ T1] Code: ee ff ff e8 ea 6d 37 00 e9 82 fc ff ff e8 e0 6d 37 00 e9 1b fd ff ff e8 d6 6d 37 00 48 8d 3d 0f 56 38 0e 49 8d b6 70 01 00 00 <67> 48 0f b9 3a 41 81 cf 00 01 00 00 e9 82 e8 ff ff e8 b2 6d 37 00
[ 4.594643][ T1] RSP: 0000:ffffc900000675a8 EFLAGS: 00010293
[ 4.597472][ T1] RAX: ffffffff818c5a0a RBX: 0000000000000000 RCX: ffff88801c6bdd00
[ 4.600711][ T1] RDX: 0000000000000000 RSI: ffff88801d71f570 RDI: ffffffff8fc4b020
[ 4.604302][ T1] RBP: ffffffff8bc11240 R08: ffff88801c6bdd00 R09: 0000000000000002
[ 4.608153][ T1] R10: 0000000000000102 R11: 0000000000000000 R12: dffffc0000000000
[ 4.611748][ T1] R13: ffff88801d71f400 R14: ffff88801d71f400 R15: 0000000000000000
[ 4.615456][ T1] FS: 0000000000000000(0000) GS:ffff8881259f4000(0000) knlGS:0000000000000000
[ 4.620545][ T1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4.623608][ T1] CR2: ffff88823ffff000 CR3: 000000000e13c000 CR4: 00000000003526f0
[ 4.627294][ T1] Call Trace:
[ 4.628844][ T1]
[ 4.630314][ T1] ? __pfx_kernel_fpu_begin_mask+0x10/0x10
[ 4.632979][ T1] alloc_workqueue_noprof+0xe3/0x210
[ 4.635397][ T1] ? __pfx_alloc_workqueue_noprof+0x10/0x10
[ 4.637904][ T1] ? lock_release+0x4b/0x3b0
[ 4.639889][ T1] ? __pfx_init_ntfs_fs+0x10/0x10
[ 4.642045][ T1] init_ntfs_fs+0xc9/0x400
[ 4.644195][ T1] ? __pfx_init_ntfs_fs+0x10/0x10
[ 4.646408][ T1] ? do_raw_spin_lock+0x12b/0x2f0
[ 4.648571][ T1] ? rcu_is_watching+0x15/0xb0
[ 4.650954][ T1] ? do_raw_spin_lock+0x12b/0x2f0
[ 4.653623][ T1] ? rcu_is_watching+0x15/0xb0
[ 4.655750][ T1] ? rcu_is_watching+0x15/0xb0
[ 4.657889][ T1] ? rcu_is_watching+0x15/0xb0
[ 4.660139][ T1] ? trace_irq_enable+0x3b/0x130
[ 4.662334][ T1] ? _raw_spin_unlock_irqrestore+0x4c/0x80
[ 4.665124][ T1] ? add_device_randomness+0xcf/0x130
[ 4.667576][ T1] ? __pfx_add_device_randomness+0x10/0x10
[ 4.670629][ T1] ? __pfx_ksmbd_server_terminate_conn+0x10/0x10
[ 4.673630][ T1] ? register_filesystem+0x33a/0x360
[ 4.677083][ T1] do_one_initcall+0x250/0x860
[ 4.679586][ T1] ? __pfx_init_ntfs_fs+0x10/0x10
[ 4.681969][ T1] ? __pfx_do_one_initcall+0x10/0x10
[ 4.684640][ T1] ? ktime_get+0x1ee/0x210
[ 4.686607][ T1] ? __pfx___schedule+0x10/0x10
[ 4.688537][ T1] ? clockevents_program_event+0x48f/0x630
[ 4.691564][ T1] ? __pfx_clockevents_program_event+0x10/0x10
[ 4.695079][ T1] ? rcu_is_watching+0x15/0xb0
[ 4.697684][ T1] ? trace_irq_disable+0x3b/0x130
[ 4.699937][ T1] ? preempt_schedule_irq+0x66/0xa0
[ 4.702793][ T1] ? rcu_is_watching+0x15/0xb0
[ 4.705171][ T1] ? trace_irq_enable+0x3b/0x130
[ 4.707394][ T1] ? asm_sysvec_apic_timer_interrupt+0x1a/0x20
[ 4.710120][ T1] ? strlen+0x1f/0x70
[ 4.711579][ T1] ? next_arg+0x4a0/0x5e0
[ 4.713587][ T1] ? parameq+0x14d/0x170
[ 4.715370][ T1] ? parse_args+0x9ff/0xb10
[ 4.717516][ T1] ? rcu_is_watching+0x15/0xb0
[ 4.719826][ T1] ? rcu_is_watching+0x15/0xb0
[ 4.721747][ T1] do_initcall_level+0x10a/0x1a0
[ 4.723799][ T1] ? kernel_init+0x1d/0x1d0
[ 4.725609][ T1] do_initcalls+0x59/0xa0
[ 4.727324][ T1] kernel_init_freeable+0x29d/0x3e0
[ 4.729929][ T1] ? __pfx_kernel_init+0x10/0x10
[ 4.732320][ T1] kernel_init+0x1d/0x1d0
[ 4.734082][ T1] ? __pfx_kernel_init+0x10/0x10
[ 4.736134][ T1] ret_from_fork+0x510/0xb60
[ 4.738010][ T1] ? __pfx_ret_from_fork+0x10/0x10
[ 4.740165][ T1] ? __switch_to+0xc56/0x13f0
[ 4.742171][ T1] ? __pfx_kernel_init+0x10/0x10
[ 4.744392][ T1] ret_from_fork_asm+0x1a/0x30
[ 4.746409][ T1]
[ 4.747808][ T1] Kernel panic - not syncing: kernel: panic_on_warn set ...
[ 4.751211][ T1] CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT(full)
[ 4.754299][ T1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[ 4.754299][ T1] Call Trace:
[ 4.754299][ T1]
[ 4.754299][ T1] vpanic+0x56c/0xa60
[ 4.754299][ T1] ? __pfx__printk+0x10/0x10
[ 4.754299][ T1] ? __pfx_vpanic+0x10/0x10
[ 4.754299][ T1] ? is_bpf_text_address+0x292/0x2b0
[ 4.754299][ T1] ? is_bpf_text_address+0x26/0x2b0
[ 4.754299][ T1] panic+0xc5/0xd0
[ 4.754299][ T1] ? __pfx_panic+0x10/0x10
[ 4.754299][ T1] ? ret_from_fork_asm+0x1a/0x30
[ 4.754299][ T1] __warn+0x310/0x4c0
[ 4.754299][ T1] ? __alloc_workqueue+0x1a11/0x1d70
[ 4.782753][ T1] ? __alloc_workqueue+0x1a11/0x1d70
[ 4.782753][ T1] __report_bug+0x331/0x530
[ 4.782753][ T1] ? kernel_init+0x1d/0x1d0
[ 4.782753][ T1] ? ret_from_fork+0x510/0xb60
[ 4.782753][ T1] ? ret_from_fork_asm+0x1a/0x30
[ 4.782753][ T1] ? __alloc_workqueue+0x1a11/0x1d70
[ 4.782753][ T1] ? __pfx___report_bug+0x10/0x10
[ 4.782753][ T1] report_bug_entry+0x19a/0x290
[ 4.782753][ T1] ? __alloc_workqueue+0x1a18/0x1d70
[ 4.782753][ T1] ? __alloc_workqueue+0x1a1d/0x1d70
[ 4.782753][ T1] handle_bug+0x10c/0x230
[ 4.782753][ T1] exc_invalid_op+0x1a/0x50
[ 4.782753][ T1] asm_exc_invalid_op+0x1a/0x20
[ 4.782753][ T1] RIP: 0010:__alloc_workqueue+0x1a18/0x1d70
[ 4.782753][ T1] Code: ee ff ff e8 ea 6d 37 00 e9 82 fc ff ff e8 e0 6d 37 00 e9 1b fd ff ff e8 d6 6d 37 00 48 8d 3d 0f 56 38 0e 49 8d b6 70 01 00 00 <67> 48 0f b9 3a 41 81 cf 00 01 00 00 e9 82 e8 ff ff e8 b2 6d 37 00
[ 4.782753][ T1] RSP: 0000:ffffc900000675a8 EFLAGS: 00010293
[ 4.782753][ T1] RAX: ffffffff818c5a0a RBX: 0000000000000000 RCX: ffff88801c6bdd00
[ 4.782753][ T1] RDX: 0000000000000000 RSI: ffff88801d71f570 RDI: ffffffff8fc4b020
[ 4.782753][ T1] RBP: ffffffff8bc11240 R08: ffff88801c6bdd00 R09: 0000000000000002
[ 4.782753][ T1] R10: 0000000000000102 R11: 0000000000000000 R12: dffffc0000000000
[ 4.782753][ T1] R13: ffff88801d71f400 R14: ffff88801d71f400 R15: 0000000000000000
[ 4.782753][ T1] ? __alloc_workqueue+0x1a0a/0x1d70
[ 4.782753][ T1] ? __alloc_workqueue+0x1a0a/0x1d70
[ 4.782753][ T1] ? __pfx_kernel_fpu_begin_mask+0x10/0x10
[ 4.782753][ T1] alloc_workqueue_noprof+0xe3/0x210
[ 4.782753][ T1] ? __pfx_alloc_workqueue_noprof+0x10/0x10
[ 4.782753][ T1] ? lock_release+0x4b/0x3b0
[ 4.782753][ T1] ? __pfx_init_ntfs_fs+0x10/0x10
[ 4.782753][ T1] init_ntfs_fs+0xc9/0x400
[ 4.782753][ T1] ? __pfx_init_ntfs_fs+0x10/0x10
[ 4.782753][ T1] ? do_raw_spin_lock+0x12b/0x2f0
[ 4.782753][ T1] ? rcu_is_watching+0x15/0xb0
[ 4.782753][ T1] ? do_raw_spin_lock+0x12b/0x2f0
[ 4.782753][ T1] ? rcu_is_watching+0x15/0xb0
[ 4.782753][ T1] ? rcu_is_watching+0x15/0xb0
[ 4.782753][ T1] ? rcu_is_watching+0x15/0xb0
[ 4.782753][ T1] ? trace_irq_enable+0x3b/0x130
[ 4.782753][ T1] ? _raw_spin_unlock_irqrestore+0x4c/0x80
[ 4.882693][ T1] ? add_device_randomness+0xcf/0x130
[ 4.882693][ T1] ? __pfx_add_device_randomness+0x10/0x10
[ 4.882693][ T1] ? __pfx_ksmbd_server_terminate_conn+0x10/0x10
[ 4.882693][ T1] ? register_filesystem+0x33a/0x360
[ 4.882693][ T1] do_one_initcall+0x250/0x860
[ 4.882693][ T1] ? __pfx_init_ntfs_fs+0x10/0x10
[ 4.882693][ T1] ? __pfx_do_one_initcall+0x10/0x10
[ 4.882693][ T1] ? ktime_get+0x1ee/0x210
[ 4.882693][ T1] ? __pfx___schedule+0x10/0x10
[ 4.882693][ T1] ? clockevents_program_event+0x48f/0x630
[ 4.882693][ T1] ? __pfx_clockevents_program_event+0x10/0x10
[ 4.882693][ T1] ? rcu_is_watching+0x15/0xb0
[ 4.882693][ T1] ? trace_irq_disable+0x3b/0x130
[ 4.882693][ T1] ? preempt_schedule_irq+0x66/0xa0
[ 4.882693][ T1] ? rcu_is_watching+0x15/0xb0
[ 4.882693][ T1] ? trace_irq_enable+0x3b/0x130
[ 4.882693][ T1] ? asm_sysvec_apic_timer_interrupt+0x1a/0x20
[ 4.882693][ T1] ? strlen+0x1f/0x70
[ 4.882693][ T1] ? next_arg+0x4a0/0x5e0
[ 4.882693][ T1] ? parameq+0x14d/0x170
[ 4.882693][ T1] ? parse_args+0x9ff/0xb10
[ 4.882693][ T1] ? rcu_is_watching+0x15/0xb0
[ 4.882693][ T1] ? rcu_is_watching+0x15/0xb0
[ 4.882693][ T1] do_initcall_level+0x10a/0x1a0
[ 4.882693][ T1] ? kernel_init+0x1d/0x1d0
[ 4.882693][ T1] do_initcalls+0x59/0xa0
[ 4.882693][ T1] kernel_init_freeable+0x29d/0x3e0
[ 4.882693][ T1] ? __pfx_kernel_init+0x10/0x10
[ 4.882693][ T1] kernel_init+0x1d/0x1d0
[ 4.882693][ T1] ? __pfx_kernel_init+0x10/0x10
[ 4.882693][ T1] ret_from_fork+0x510/0xb60
[ 4.882693][ T1] ? __pfx_ret_from_fork+0x10/0x10
[ 4.882693][ T1] ? __switch_to+0xc56/0x13f0
[ 4.882693][ T1] ? __pfx_kernel_init+0x10/0x10
[ 4.882693][ T1] ret_from_fork_asm+0x1a/0x30
[ 4.882693][ T1]
[ 4.882693][ T1] Kernel Offset: disabled
[ 4.882693][ T1] Rebooting in 86400 seconds..
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-build2823732118=/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 34dab4be5c1
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}}' -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=34dab4be5c118c76aea929f2aa0c188548615110 -X github.com/google/syzkaller/prog.gitRevisionDate=20260609-153238" ./sys/syz-sysgen | grep -q false || go install -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=34dab4be5c118c76aea929f2aa0c188548615110 -X github.com/google/syzkaller/prog.gitRevisionDate=20260609-153238" ./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=34dab4be5c118c76aea929f2aa0c188548615110 -X github.com/google/syzkaller/prog.gitRevisionDate=20260609-153238" -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=\"34dab4be5c118c76aea929f2aa0c188548615110\"
/usr/bin/ld: /tmp/ccI9tQU9.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
./tools/check-syzos.sh 2>/dev/null