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 21224 pages
Node 0, zone Normal: page owner found early allocated 27 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:
ffffffff8e164f40 (clocksource_mutex){....}-{4:4}, at: __clocksource_register_scale+0x919/0xff0 kernel/time/clocksource.c:1319
other info that might help us debug this:
context-{5:5}
1 lock held by swapper/0/0:
#0: ffffffff99a3b9f0 (&tkd->lock){....}-{2:2}, at: class_raw_spinlock_irqsave_constructor include/linux/spinlock.h:572 [inline]
#0: ffffffff99a3b9f0 (&tkd->lock){....}-{2:2}, at: timekeeping_init+0x1f2/0x350 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+0xe4/0x150 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+0x102/0x340 kernel/locking/lockdep.c:5868
__mutex_lock_common kernel/locking/mutex.c:646 [inline]
__mutex_lock+0x199/0x15e0 kernel/locking/mutex.c:821
__clocksource_register_scale+0x919/0xff0 kernel/time/clocksource.c:1319
__clocksource_register include/linux/clocksource.h:273 [inline]
clocksource_default_clock+0x1c/0x30 kernel/time/jiffies.c:68
timekeeping_init+0x201/0x350 kernel/time/timekeeping.c:2068
start_kernel+0x1cf/0x3d0 init/main.c:1087
x86_64_start_reservations+0x20/0x20 arch/x86/kernel/head64.c:310
x86_64_start_kernel+0x133/0x1a0 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@10.128.1.136" "pwd"]: exit status 255
ssh: connect to host 10.128.1.136 port 22: Connection timed out
Pseudo-terminal will not be allocated because stdin is not a terminal.
Warning: Permanently added '[us-central1-ssh-serialport.googleapis.com]:9600' (ECDSA) to the list of known hosts.
SeaBIOS (version 1.8.2-google)
Total RAM Size = 0x0000000200000000 = 8192 MiB
CPUs found: 2 Max CPUs supported: 2
SeaBIOS (version 1.8.2-google)
Machine UUID 809023d6-8369-99ef-3a95-8abc828aa082
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] Bserialport: Connected to syzkaller.us-central1-f.ci2-linux-6-1-kasan-test-job-parallel-2 port 1 (session ID: 13506a57be73bac9a50ad7ca93441af8b072da6675d28505eb2e458835e76628, active connections: 1).
IOS-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
[ 0.000010][ T0] kvm-clock: using sched offset of 13607432663 cycles
[ 0.005864][ T0] clocksource: kvm-clock: mask: 0xffffffffffffffff max_cycles: 0x1cd42e4dffb, max_idle_ns: 881590591483 ns
[ 0.014719][ T0] tsc: Detected 2199.998 MHz processor
[ 0.022288][ T0] last_pfn = 0x240000 max_arch_pfn = 0x400000000
[ 0.025444][ T0] MTRR map: 4 entries (3 fixed + 1 variable; max 19), built from 8 variable MTRRs
[ 0.029916][ T0] x86/PAT: Configuration [0-7]: WB WC UC- UC WB WP UC- WT
[ 0.033266][ T0] last_pfn = 0xbfffd max_arch_pfn = 0x400000000
[ 0.042908][ T0] found SMP MP-table at [mem 0x000f2890-0x000f289f]
[ 0.045691][ T0] Using GB pages for direct mapping
[ 0.052103][ T0] ACPI: Early table checksum verification disabled
[ 0.055783][ T0] ACPI: RSDP 0x00000000000F2610 000014 (v00 Google)
[ 0.063328][ T0] ACPI: RSDT 0x00000000BFFFFFB0 000038 (v01 Google GOOGRSDT 00000001 GOOG 00000001)
[ 0.067561][ T0] ACPI: FACP 0x00000000BFFFF370 0000F4 (v02 Google GOOGFACP 00000001 GOOG 00000001)
[ 0.078797][ T0] ACPI: DSDT 0x00000000BFFFD900 001A64 (v01 Google GOOGDSDT 00000001 GOOG 00000001)
[ 0.085136][ T0] ACPI: FACS 0x00000000BFFFD8C0 000040
[ 0.088349][ T0] ACPI: FACS 0x00000000BFFFD8C0 000040
[ 0.091837][ T0] ACPI: SRAT 0x00000000BFFFFEA0 0000C8 (v03 Google GOOGSRAT 00000001 GOOG 00000001)
[ 0.098621][ T0] ACPI: APIC 0x00000000BFFFFDF0 000076 (v05 Google GOOGAPIC 00000001 GOOG 00000001)
[ 0.106863][ T0] ACPI: SSDT 0x00000000BFFFF470 000980 (v01 Google GOOGSSDT 00000001 GOOG 00000001)
[ 0.115974][ T0] ACPI: WAET 0x00000000BFFFFE70 000028 (v01 Google GOOGWAET 00000001 GOOG 00000001)
[ 0.121298][ T0] ACPI: Reserving FACP table memory at [mem 0xbffff370-0xbffff463]
[ 0.126386][ T0] ACPI: Reserving DSDT table memory at [mem 0xbfffd900-0xbffff363]
[ 0.131107][ T0] ACPI: Reserving FACS table memory at [mem 0xbfffd8c0-0xbfffd8ff]
[ 0.136154][ T0] ACPI: Reserving FACS table memory at [mem 0xbfffd8c0-0xbfffd8ff]
[ 0.141652][ T0] ACPI: Reserving SRAT table memory at [mem 0xbffffea0-0xbfffff67]
[ 0.148104][ T0] ACPI: Reserving APIC table memory at [mem 0xbffffdf0-0xbffffe65]
[ 0.152424][ T0] ACPI: Reserving SSDT table memory at [mem 0xbffff470-0xbffffdef]
[ 0.159579][ T0] ACPI: Reserving WAET table memory at [mem 0xbffffe70-0xbffffe97]
[ 0.164823][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x00000000-0x0009ffff]
[ 0.168201][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x00100000-0xbfffffff]
[ 0.173228][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x100000000-0x23fffffff]
[ 0.177891][ T0] NUMA: Node 0 [mem 0x00001000-0x0009ffff] + [mem 0x00100000-0xbfffffff] -> [mem 0x00001000-0xbfffffff]
[ 0.184343][ T0] NUMA: Node 0 [mem 0x00001000-0xbfffffff] + [mem 0x100000000-0x23fffffff] -> [mem 0x00001000-0x23fffffff]
[ 0.191307][ T0] Faking node 0 at [mem 0x0000000000001000-0x0000000140000fff] (5120MB)
[ 0.196965][ T0] Faking node 1 at [mem 0x0000000140001000-0x000000023fffffff] (4095MB)
[ 0.202767][ T0] NODE_DATA(0) allocated [mem 0x13fffb100-0x140000fff]
[ 0.208273][ T0] NODE_DATA(1) allocated [mem 0x23fff7100-0x23fffcfff]
[ 0.527112][ T0] KernelAddressSanitizer initialized (generic)
[ 0.531271][ T0] ACPI: PM-Timer IO Port: 0xb008
[ 0.533457][ T0] ACPI: LAPIC_NMI (acpi_id[0xff] dfl dfl lint[0x1])
[ 0.536108][ T0] IOAPIC[0]: apic_id 0, version 17, address 0xfec00000, GSI 0-23
[ 0.540064][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 high level)
[ 0.543055][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
[ 0.546477][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 high level)
[ 0.550198][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 high level)
[ 0.554395][ T0] ACPI: Using ACPI (MADT) for SMP configuration information
[ 0.561651][ T0] CPU topo: Max. logical packages: 1
[ 0.565205][ T0] CPU topo: Max. logical nodes: 1
[ 0.569691][ T0] CPU topo: Num. nodes per package: 1
[ 0.575621][ T0] CPU topo: Max. logical dies: 1
[ 0.581360][ T0] CPU topo: Max. dies per package: 1
[ 0.583794][ T0] CPU topo: Max. threads per core: 2
[ 0.588014][ T0] CPU topo: Num. cores per package: 1
[ 0.591359][ T0] CPU topo: Num. threads per package: 2
[ 0.594930][ T0] CPU topo: Allowing 2 present CPUs plus 0 hotplug CPUs
[ 0.598396][ T0] PM: hibernation: Registered nosave memory: [mem 0x00000000-0x00000fff]
[ 0.602898][ T0] PM: hibernation: Registered nosave memory: [mem 0x0009f000-0x000fffff]
[ 0.607879][ T0] PM: hibernation: Registered nosave memory: [mem 0xbfffd000-0xffffffff]
[ 0.612332][ T0] [gap 0xc0000000-0xfffbbfff] available for PCI devices
[ 0.614717][ T0] Booting paravirtualized kernel on KVM
[ 0.619646][ T0] clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[ 0.767051][ T0] Zone ranges:
[ 0.769393][ T0] DMA [mem 0x0000000000001000-0x0000000000ffffff]
[ 0.773788][ T0] DMA32 [mem 0x0000000001000000-0x00000000ffffffff]
[ 0.777806][ T0] Normal [mem 0x0000000100000000-0x000000023fffffff]
[ 0.781039][ T0] Device empty
[ 0.783062][ T0] Movable zone start for each node
[ 0.786190][ T0] Early memory node ranges
[ 0.788190][ T0] node 0: [mem 0x0000000000001000-0x000000000009efff]
[ 0.792481][ T0] node 0: [mem 0x0000000000100000-0x00000000bfffcfff]
[ 0.798420][ T0] node 0: [mem 0x0000000100000000-0x0000000140000fff]
[ 0.802022][ T0] node 1: [mem 0x0000000140001000-0x000000023fffffff]
[ 0.805917][ T0] Initmem setup node 0 [mem 0x0000000000001000-0x0000000140000fff]
[ 0.808757][ T0] Initmem setup node 1 [mem 0x0000000140001000-0x000000023fffffff]
[ 0.812181][ T0] On node 0, zone DMA: 1 pages in unavailable ranges
[ 0.815871][ T0] On node 0, zone DMA: 97 pages in unavailable ranges
[ 0.887303][ T0] On node 0, zone Normal: 3 pages in unavailable ranges
[ 0.961108][ T0] setup_percpu: NR_CPUS:8 nr_cpumask_bits:2 nr_cpu_ids:2 nr_node_ids:2
[ 0.968456][ T0] percpu: Embedded 71 pages/cpu s250888 r8192 d31736 u1048576
[ 0.973081][ T0] kvm-guest: PV spinlocks enabled
[ 0.976038][ T0] PV qspinlock hash table entries: 256 (order: 0, 4096 bytes, linear)
[ 0.980383][ 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 \
[ 1.024178][ T0] Kernel command line: panic_on_warn=1 BOOT_IMAGE=/boot/bzImage root=/dev/sda1 console=ttyS0
[ 1.031965][ T0] Unknown kernel command line parameters "nbds_max=32", will be passed to user space.
[ 1.035763][ T0] random: crng init done
[ 1.037722][ T0] printk: log buffer data + meta data: 262144 + 917504 = 1179648 bytes
[ 1.042075][ T0] software IO TLB: area num 2.
[ 1.075476][ T0] Fallback order for Node 0: 0 1
[ 1.075499][ T0] Fallback order for Node 1: 1 0
[ 1.075524][ T0] Built 2 zonelists, mobility grouping on. Total pages: 2097051
[ 1.089116][ T0] Policy zone: Normal
[ 1.092647][ T0] mem auto-init: stack:all(zero), heap alloc:on, heap free:off
[ 1.097499][ T0] stackdepot: allocating hash table via alloc_large_system_hash
[ 1.101792][ T0] stackdepot hash table entries: 1048576 (order: 12, 16777216 bytes, linear)
[ 1.110707][ T0] stackdepot: allocating space for 8192 stack pools via memblock
[ 1.885148][ T0] **********************************************************
[ 1.891456][ T0] ** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE **
[ 1.900612][ T0] ** **
[ 1.906594][ T0] ** This system shows unhashed kernel memory addresses **
[ 1.910026][ T0] ** via the console, logs, and other interfaces. This **
[ 1.913854][ T0] ** might reduce the security of your system. **
[ 1.917133][ T0] ** **
[ 1.923002][ T0] ** If you see this message and you are not debugging **
[ 1.927453][ T0] ** the kernel, report this immediately to your system **
[ 1.931084][ T0] ** administrator! **
[ 1.936079][ T0] ** **
[ 1.940154][ T0] ** Use hash_pointers=always to force this mode off **
[ 1.945295][ T0] ** **
[ 1.950621][ T0] ** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE **
[ 1.953997][ T0] **********************************************************
[ 1.961650][ T0] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=2
[ 2.078302][ T0] allocated 167772160 bytes of page_ext
[ 2.081263][ T0] Node 0, zone DMA: page owner found early allocated 0 pages
[ 2.102086][ T0] Node 0, zone DMA32: page owner found early allocated 21224 pages
[ 2.114557][ T0] Node 0, zone Normal: page owner found early allocated 27 pages
[ 2.133738][ T0] Node 1, zone Normal: page owner found early allocated 19847 pages
[ 2.141036][ T0] Kernel/User page tables isolation: enabled
[ 2.145310][ T0] Dynamic Preempt: full
[ 2.149698][ T0] Running RCU self tests
[ 2.153430][ T0] Running RCU synchronous self tests
[ 2.157197][ T0] rcu: Preemptible hierarchical RCU implementation.
[ 2.161375][ T0] rcu: RCU lockdep checking is enabled.
[ 2.164278][ T0] rcu: RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=2.
[ 2.169776][ T0] rcu: RCU callback double-/use-after-free debug is enabled.
[ 2.172982][ T0] rcu: RCU debug extended QS entry/exit.
[ 2.176915][ T0] All grace periods are expedited (rcu_expedited).
[ 2.185044][ T0] Trampoline variant of Tasks RCU enabled.
[ 2.192507][ T0] Tracing variant of Tasks RCU enabled.
[ 2.200566][ T0] rcu: RCU calculated value of scheduler-enlistment delay is 10 jiffies.
[ 2.211245][ T0] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2
[ 2.221669][ T0] Running RCU synchronous self tests
[ 2.228105][ T0] RCU Tasks: Setting shift to 1 and lim to 1 rcu_task_cb_adjust=1 rcu_task_cpu_ids=2.
[ 2.387462][ T0] NR_IRQS: 4352, nr_irqs: 440, preallocated irqs: 16
[ 2.396574][ T0] rcu: srcu_init: Setting srcu_struct sizes based on contention.
[ 2.405419][ T0] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[ 2.419858][ T0]
[ 2.422268][ T0] =============================
[ 2.430061][ T0] [ BUG: Invalid wait context ]
[ 2.435744][ T0] syzkaller #0 Not tainted
[ 2.441661][ T0] -----------------------------
[ 2.447142][ T0] swapper/0/0 is trying to lock:
[ 2.452588][ T0] ffffffff8e164f40 (clocksource_mutex){....}-{4:4}, at: __clocksource_register_scale+0x919/0xff0
[ 2.465052][ T0] other info that might help us debug this:
[ 2.472548][ T0] context-{5:5}
[ 2.477682][ T0] 1 lock held by swapper/0/0:
[ 2.482603][ T0] #0: ffffffff99a3b9f0 (&tkd->lock){....}-{2:2}, at: timekeeping_init+0x1f2/0x350
[ 2.499314][ T0] stack backtrace:
[ 2.504153][ T0] CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT(full)
[ 2.504170][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[ 2.504177][ T0] Call Trace:
[ 2.504185][ T0]
[ 2.504192][ T0] dump_stack_lvl+0xe4/0x150
[ 2.504224][ T0] __lock_acquire+0xe4c/0x2df0
[ 2.504241][ T0] ? __pfx_up+0x10/0x10
[ 2.504255][ T0] ? prb_read_valid+0x38/0x60
[ 2.504271][ T0] ? __clocksource_register_scale+0x919/0xff0
[ 2.504288][ T0] lock_acquire+0x102/0x340
[ 2.504307][ T0] ? __clocksource_register_scale+0x919/0xff0
[ 2.504322][ T0] ? _printk+0xd9/0x130
[ 2.504333][ T0] ? __might_resched+0x6d/0x4d0
[ 2.504346][ T0] __mutex_lock+0x199/0x15e0
[ 2.504357][ T0] ? __clocksource_register_scale+0x919/0xff0
[ 2.504371][ T0] ? __pfx_vprintk_emit+0x10/0x10
[ 2.504389][ T0] ? __clocksource_register_scale+0x919/0xff0
[ 2.504404][ T0] ? __pfx___mutex_lock+0x10/0x10
[ 2.504417][ T0] ? clocksource_arch_init+0x82/0x110
[ 2.504434][ T0] __clocksource_register_scale+0x919/0xff0
[ 2.504453][ T0] ? __hrtimer_setup+0x1b7/0x250
[ 2.504466][ T0] clocksource_default_clock+0x1c/0x30
[ 2.504497][ T0] timekeeping_init+0x201/0x350
[ 2.504511][ T0] ? __pfx_timekeeping_init+0x10/0x10
[ 2.504524][ T0] ? __split_page_owner+0x29/0x300
[ 2.504545][ T0] ? __split_page_owner+0x29/0x300
[ 2.504561][ T0] ? vdso_setup_data_pages+0x9f/0x130
[ 2.504576][ T0] ? __asan_memcpy+0x3c/0x70
[ 2.504598][ T0] start_kernel+0x1cf/0x3d0
[ 2.504609][ T0] x86_64_start_reservations+0x20/0x20
[ 2.504623][ T0] x86_64_start_kernel+0x133/0x1a0
[ 2.504635][ T0] common_startup_64+0x13e/0x157
[ 2.504651][ T0]
[ 2.505198][ T0] kfence: initialized - using 2097152 bytes for 255 objects at 0xffff88823be00000-0xffff88823c000000
[ 2.756440][ T0] Console: colour VGA+ 80x25
[ 2.761817][ T0] printk: legacy console [ttyS0] enabled
[ 2.761817][ T0] printk: legacy console [ttyS0] enabled
[ 2.773900][ T0] printk: legacy bootconsole [earlyser0] disabled
[ 2.773900][ T0] printk: legacy bootconsole [earlyser0] disabled
[ 2.789452][ T0] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar
[ 2.801696][ T0] ... MAX_LOCKDEP_SUBCLASSES: 8
[ 2.808564][ T0] ... MAX_LOCK_DEPTH: 48
[ 2.814066][ T0] ... MAX_LOCKDEP_KEYS: 8192
[ 2.819869][ T0] ... CLASSHASH_SIZE: 4096
[ 2.825158][ T0] ... MAX_LOCKDEP_ENTRIES: 1048576
[ 2.831169][ T0] ... MAX_LOCKDEP_CHAINS: 1048576
[ 2.837655][ T0] ... CHAINHASH_SIZE: 524288
[ 2.843981][ T0] memory used by lock dependency info: 106625 kB
[ 2.850952][ T0] memory used for stack traces: 8320 kB
[ 2.857528][ T0] per task-struct memory footprint: 1920 bytes
[ 2.866531][ T0] mempolicy: Enabling automatic NUMA balancing. Configure with numa_balancing= or the kernel.numa_balancing sysctl
[ 2.880891][ T0] ACPI: Core revision 20260408
[ 2.887078][ T0] APIC: Switch to symmetric I/O mode setup
[ 2.894997][ T0] x2apic enabled
[ 2.908947][ T0] APIC: Switched APIC routing to: physical x2apic
[ 2.952610][ T0] ..TIMER: vector=0x30 apic1=0 pin1=0 apic2=-1 pin2=-1
[ 2.962100][ T0] clocksource: tsc-early: mask: 0xffffffffffffffff max_cycles: 0x1fb63109b96, max_idle_ns: 440795265316 ns
[ 2.976440][ T0] Calibrating delay loop (skipped) preset value.. 4399.99 BogoMIPS (lpj=21999980)
[ 2.987038][ T0] numa_add_cpu cpu 0 node 0: mask now 0
[ 2.993016][ T0] numa_add_cpu cpu 0 node 1: mask now 0
[ 2.996448][ T0] Last level iTLB entries: 4KB 64, 2MB 8, 4MB 8
[ 3.006444][ T0] Last level dTLB entries: 4KB 64, 2MB 32, 4MB 32, 1GB 4
[ 3.016515][ T0] mitigations: Enabled attack vectors: user_kernel, user_user, guest_host, guest_guest, SMT mitigations: auto
[ 3.026442][ T0] Speculative Store Bypass: Mitigation: Speculative Store Bypass disabled via prctl
[ 3.036445][ T0] Spectre V2 : Mitigation: IBRS
[ 3.046439][ T0] RETBleed: Mitigation: IBRS
[ 3.051460][ T0] ITS: Mitigation: Aligned branch/return thunks
[ 3.056542][ T0] Spectre V2 : User space: Mitigation: STIBP via prctl
[ 3.066442][ T0] MDS: Mitigation: Clear CPU buffers
[ 3.073144][ T0] TAA: Mitigation: Clear CPU buffers
[ 3.076464][ T0] MMIO Stale Data: Vulnerable: Clear CPU buffers attempted, no microcode
[ 3.086441][ T0] Spectre V1 : Mitigation: usercopy/swapgs barriers and __user pointer sanitization
[ 3.096443][ T0] Spectre V2 : Spectre v2 / SpectreRSB: Filling RSB on context switch and VMEXIT
[ 3.106461][ T0] Spectre V2 : mitigation: Enabling conditional Indirect Branch Prediction Barrier
[ 3.116485][ T0] active return thunk: its_return_thunk
[ 3.126445][ T0] Spectre V2 : Spectre BHI mitigation: SW BHB clearing on syscall and VM exit
[ 3.136475][ T0] x86/fpu: Supporting XSAVE feature 0x001: 'x87 floating point registers'
[ 3.146445][ T0] x86/fpu: Supporting XSAVE feature 0x002: 'SSE registers'
[ 3.156444][ T0] x86/fpu: Supporting XSAVE feature 0x004: 'AVX registers'
[ 3.166597][ T0] x86/fpu: xstate_offset[2]: 576, xstate_sizes[2]: 256
[ 3.176445][ T0] x86/fpu: Enabled xstate features 0x7, context size is 832 bytes, using 'standard' format.
[ 3.564125][ T0] pid_max: default: 32768 minimum: 301
[ 3.567614][ T0] landlock: Up and running.
[ 3.576446][ T0] Yama: becoming mindful.
[ 3.581689][ T0] TOMOYO Linux initialized
[ 3.587338][ T0] AppArmor: AppArmor initialized
[ 3.594710][ T0] LSM support for eBPF active
[ 3.608044][ T0] Dentry cache hash table entries: 1048576 (order: 11, 8388608 bytes, vmalloc hugepage)
[ 3.619189][ T0] Inode-cache hash table entries: 524288 (order: 10, 4194304 bytes, vmalloc hugepage)
[ 3.626955][ T0] Mount-cache hash table entries: 16384 (order: 5, 131072 bytes, vmalloc)
[ 3.636636][ T0] Mountpoint-cache hash table entries: 16384 (order: 5, 131072 bytes, vmalloc)
[ 3.647486][ T0] VFS: Finished mounting rootfs on nullfs
[ 3.659145][ T0] Running RCU synchronous self tests
[ 3.666445][ T0] Running RCU synchronous self tests
[ 3.795914][ T1] smpboot: CPU0: Intel(R) Xeon(R) CPU @ 2.20GHz (family: 0x6, model: 0x4f, stepping: 0x0)
[ 3.800202][ T1] Performance Events: unsupported CPU family 6 model 79 no PMU driver, software events only.
[ 3.816483][ T1] signal: max sigframe size: 1776
[ 3.824004][ T1] rcu: Hierarchical SRCU implementation.
[ 3.826459][ T1] rcu: Max phase no-delay instances is 1000.
[ 3.837185][ T1] Timer migration: 1 hierarchy levels; 8 children per group; 0 crossnode level
[ 3.924080][ T1] NMI watchdog: Perf NMI watchdog permanently disabled
[ 3.936559][ T1] smp: Bringing up secondary CPUs ...
[ 3.957771][ T1] smpboot: x86: Booting SMP configuration:
[ 3.966232][ T1] .... node #0, CPUs: #1
[ 0.551029][ T0] numa_add_cpu cpu 1 node 0: mask now 0-1
[ 0.551029][ T0] numa_add_cpu cpu 1 node 1: mask now 0-1
[ 3.987156][ 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.
[ 3.996446][ 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.
[ 4.006500][ 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.
[ 4.016629][ T1] smp: Brought up 2 nodes, 2 CPUs
[ 4.026775][ T1] smpboot: Total of 2 processors activated (8799.99 BogoMIPS)
[ 4.037861][ T1] Memory: 6473728K/8388204K available (169293K kernel code, 28659K rwdata, 39920K rodata, 25744K init, 119276K bss, 1724772K reserved, 0K cma-reserved)
[ 4.048432][ T1] devtmpfs: initialized
[ 4.057064][ T1] x86/mm: Memory block size: 128MB
[ 4.117079][ T1] Running RCU synchronous self tests
[ 4.123426][ T1] Running RCU synchronous self tests
[ 4.126863][ T1] Running RCU Tasks wait API self tests
[ 4.136596][ T1] Running RCU Tasks Trace wait API self tests
[ 4.147011][ T1] posixtimers hash table entries: 1024 (order: 5, 73728 bytes, vmalloc)
[ 4.156596][ T1] futex hash table entries: 256 (32768 bytes on 2 NUMA nodes, total 64 KiB, linear).
[ 4.167784][ T1] xor: automatically using best checksumming function avx
[ 4.179312][ T1] PM: RTC time: 20:14:43, date: 2026-06-17
[ 4.196465][ T10] Callback from call_rcu_tasks_trace() invoked.
[ 4.205292][ T1] NET: Registered PF_NETLINK/PF_ROUTE protocol family
[ 4.221186][ T1] audit: initializing netlink subsys (disabled)
[ 4.226733][ T30] audit: type=2000 audit(1781727282.972:1): state=initialized audit_enabled=0 res=1
[ 4.242297][ T1] thermal_sys: Registered thermal governor 'step_wise'
[ 4.242310][ T1] thermal_sys: Registered thermal governor 'user_space'
[ 4.246695][ T1] cpuidle: using governor menu
[ 4.256715][ T1] NET: Registered PF_QIPCRTR protocol family
[ 4.272644][ T1] Freeing SMP alternatives memory: 132K
[ 4.278814][ T1] dca service started, version 1.12.1
[ 4.286754][ T1] PCI: Using configuration type 1 for base access
[ 4.326502][ T1] HugeTLB: registered 1.00 GiB page size, pre-allocated 0 pages
[ 4.334891][ T1] HugeTLB: 16380 KiB vmemmap can be freed for a 1.00 GiB page
[ 4.336449][ T1] HugeTLB: registered 2.00 MiB page size, pre-allocated 0 pages
[ 4.346456][ T1] HugeTLB: 28 KiB vmemmap can be freed for a 2.00 MiB page
[ 4.366542][ T28] Callback from call_rcu_tasks() invoked.
[ 4.393076][ T1] raid6: skipped pq benchmark and selected avx2x4
[ 4.396486][ T1] raid6: using avx2x2 recovery algorithm
[ 4.408861][ T1] ACPI: Added _OSI(Module Device)
[ 4.414410][ T1] ACPI: Added _OSI(Processor Device)
[ 4.416457][ T1] ACPI: Added _OSI(Processor Aggregator Device)
[ 4.572397][ T1] ACPI: 2 ACPI AML tables successfully acquired and loaded
[ 4.608096][ T1] ACPI: \_SB_: platform _OSC: OS support mask [000e7eee]
[ 4.636197][ T1] ACPI: Interpreter enabled
[ 4.636859][ T1] ACPI: PM: (supports S0 S3 S4 S5)
[ 4.646453][ T1] ACPI: Using IOAPIC for interrupt routing
[ 4.652892][ T1] PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug
[ 4.656456][ T1] PCI: Ignoring E820 reservations for host bridge windows
[ 4.670773][ T1] ACPI: Enabled 16 GPEs in block 00 to 0F
[ 4.896721][ T1] ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-ff])
[ 4.906264][ T1] acpi PNP0A03:00: _OSC: OS supports [ASPM ClockPM Segments MSI HPX-Type3]
[ 4.906471][ T1] acpi PNP0A03:00: _OSC: not requesting OS control; OS requires [ExtendedConfig ASPM ClockPM MSI]
[ 4.916734][ T1] acpi PNP0A03:00: _OSC: platform retains control of PCIe features (AE_ERROR)
[ 4.926871][ T1] acpi PNP0A03:00: fail to add MMCONFIG information, can't access extended configuration space under this bridge
[ 4.955327][ T1] PCI host bridge to bus 0000:00
[ 4.956461][ T1] pci_bus 0000:00: Unknown NUMA node; performance will be reduced
[ 4.966858][ T1] pci_bus 0000:00: root bus resource [io 0x0000-0x0cf7 window]
[ 4.976462][ T1] pci_bus 0000:00: root bus resource [io 0x0d00-0xffff window]
[ 4.986495][ T1] pci_bus 0000:00: root bus resource [mem 0x000a0000-0x000bffff window]
[ 4.996488][ T1] pci_bus 0000:00: root bus resource [mem 0xc0000000-0xfebfefff window]
[ 5.006487][ T1] pci_bus 0000:00: root bus resource [bus 00-ff]
[ 5.014040][ T1] pci 0000:00:00.0: [8086:1237] type 00 class 0x060000 conventional PCI endpoint
[ 5.019742][ T1] pci 0000:00:01.0: [8086:7110] type 00 class 0x060100 conventional PCI endpoint
[ 5.032040][ T1] pci 0000:00:01.3: [8086:7113] type 00 class 0x068000 conventional PCI endpoint
[ 5.056952][ T1] pci 0000:00:01.3: quirk: [io 0xb000-0xb03f] claimed by PIIX4 ACPI
[ 5.071766][ T1] pci 0000:00:03.0: [1af4:1004] type 00 class 0x000000 conventional PCI endpoint
[ 5.096505][ T1] pci 0000:00:03.0: BAR 0 [io 0xc000-0xc03f]
[ 5.106486][ T1] pci 0000:00:03.0: BAR 1 [mem 0xfe800000-0xfe80007f]
[ 5.122466][ T1] pci 0000:00:04.0: [1af4:1000] type 00 class 0x020000 conventional PCI endpoint
[ 5.141250][ T1] pci 0000:00:04.0: BAR 0 [io 0xc040-0xc07f]
[ 5.146493][ T1] pci 0000:00:04.0: BAR 1 [mem 0xfe801000-0xfe80107f]
[ 5.161182][ T1] pci 0000:00:05.0: [1ae0:a002] type 00 class 0x030000 conventional PCI endpoint
[ 5.186636][ T1] pci 0000:00:05.0: BAR 0 [mem 0xfe000000-0xfe7fffff]
[ 5.198021][ T1] pci 0000:00:05.0: Video device with shadowed ROM at [mem 0x000c0000-0x000dffff]
[ 5.211322][ T1] pci 0000:00:06.0: [1af4:1002] type 00 class 0x00ff00 conventional PCI endpoint
[ 5.226528][ T1] pci 0000:00:06.0: BAR 0 [io 0xc080-0xc09f]
[ 5.240742][ T1] pci 0000:00:07.0: [1af4:1005] type 00 class 0x00ff00 conventional PCI endpoint
[ 5.256647][ T1] pci 0000:00:07.0: BAR 0 [io 0xc0a0-0xc0bf]
[ 5.263681][ T1] pci 0000:00:07.0: BAR 1 [mem 0xfe802000-0xfe80203f]
[ 5.313022][ T1] ACPI: PCI: Interrupt link LNKA configured for IRQ 10
[ 5.331601][ T1] ACPI: PCI: Interrupt link LNKB configured for IRQ 10
[ 5.348552][ T1] ACPI: PCI: Interrupt link LNKC configured for IRQ 11
[ 5.364590][ T1] ACPI: PCI: Interrupt link LNKD configured for IRQ 11
[ 5.378295][ T1] ACPI: PCI: Interrupt link LNKS configured for IRQ 9
[ 5.408505][ T1] iommu: Default domain type: Translated
[ 5.416714][ T1] iommu: DMA domain TLB invalidation policy: lazy mode
[ 5.431412][ T1] SCSI subsystem initialized
[ 5.437390][ T1] libata version 3.00 loaded.
[ 5.447057][ T1] ACPI: bus type USB registered
[ 5.454992][ T1] usbcore: registered new interface driver usbfs
[ 5.456926][ T1] usbcore: registered new interface driver hub
[ 5.466825][ T1] usbcore: registered new device driver usb
[ 5.479799][ T1] mc: Linux media interface: v0.10
[ 5.486967][ T1] videodev: Linux video capture interface: v2.00
[ 5.497538][ T1] pps_core: LinuxPPS API ver. 1 registered
[ 5.506456][ T1] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti
[ 5.516682][ T1] PTP clock support registered
[ 5.536738][ T1] EDAC MC: Ver: 3.0.0
[ 5.550845][ T1] Advanced Linux Sound Architecture Driver Initialized.
[ 5.562570][ T1] Bluetooth: Core ver 2.22
[ 5.566650][ T1] NET: Registered PF_BLUETOOTH protocol family
[ 5.573053][ T1] Bluetooth: HCI device and connection manager initialized
[ 5.576496][ T1] Bluetooth: HCI socket layer initialized
[ 5.586468][ T1] Bluetooth: L2CAP socket layer initialized
[ 5.596574][ T1] Bluetooth: SCO socket layer initialized
[ 5.603367][ T1] NET: Registered PF_ATMPVC protocol family
[ 5.606781][ T1] NetLabel: Initializing
[ 5.616458][ T1] NetLabel: domain hash size = 128
[ 5.626455][ T1] NetLabel: protocols = UNLABELED CIPSOv4 CALIPSO
[ 5.636446][ T1] NetLabel: unlabeled traffic allowed by default
[ 5.649013][ T1] nfc: nfc_init: NFC Core ver 0.1
[ 5.656836][ T1] NET: Registered PF_NFC protocol family
[ 5.663722][ T1] PCI: Using ACPI for IRQ routing
[ 5.666511][ T1] PCI: pci_cache_line_size set to 64 bytes
[ 5.677124][ T1] e820: register RAM buffer resource [mem 0x0009fc00-0x0009ffff]
[ 5.686505][ T1] e820: register RAM buffer resource [mem 0xbfffd000-0xbfffffff]
[ 5.697468][ T1] pci 0000:00:05.0: vgaarb: setting as boot VGA device
[ 5.706425][ T1] pci 0000:00:05.0: vgaarb: bridge control possible
[ 5.706425][ T1] pci 0000:00:05.0: vgaarb: VGA device added: decodes=io+mem,owns=io+mem,locks=none
[ 5.706452][ T1] vgaarb: loaded
[ 5.721435][ T1] clocksource: Switched to clocksource kvm-clock
[ 5.731892][ T1] VFS: Disk quotas dquot_6.6.0
[ 5.737304][ T1] VFS: Dquot-cache hash table entries: 512 (4096 bytes)
[ 5.751553][ T1] netfs: FS-Cache loaded
[ 5.757810][ T1] CacheFiles: Loaded
[ 5.768853][ T1] TOMOYO: 2.6.0
[ 5.772682][ T1] Mandatory Access Control activated.
[ 5.783609][ T1] AppArmor: AppArmor Filesystem Enabled
[ 5.790837][ T1] pnp: PnP ACPI init
[ 5.821352][ T1] pnp: PnP ACPI: found 6 devices
[ 5.880625][ T1] clocksource: acpi_pm: mask: 0xffffff max_cycles: 0xffffff, max_idle_ns: 2085701024 ns
[ 5.893168][ T1] NET: Registered PF_INET protocol family
[ 5.900767][ T1] IP idents hash table entries: 131072 (order: 8, 1048576 bytes, vmalloc)
[ 5.923611][ T1] tcp_listen_portaddr_hash hash table entries: 4096 (order: 7, 294912 bytes, vmalloc)
[ 5.935878][ T1] Table-perturb hash table entries: 65536 (order: 6, 262144 bytes, vmalloc)
[ 5.946147][ T1] TCP established hash table entries: 65536 (order: 7, 524288 bytes, vmalloc)
[ 5.965770][ T1] TCP bind hash table entries: 65536 (order: 12, 9437184 bytes, vmalloc hugepage)
[ 5.981473][ T1] TCP: Hash tables configured (established 65536 bind 65536)
[ 5.991865][ T1] MPTCP token hash table entries: 8192 (order: 8, 720896 bytes, vmalloc)
[ 6.004033][ T1] UDP hash table entries: 4096 (order: 8, 1048576 bytes, vmalloc)
[ 6.015448][ T1] NET: Registered PF_UNIX/PF_LOCAL protocol family
[ 6.029121][ T1] RPC: Registered named UNIX socket transport module.
[ 6.036392][ T1] RPC: Registered udp transport module.
[ 6.043477][ T1] RPC: Registered tcp transport module.
[ 6.049526][ T1] RPC: Registered tcp-with-tls transport module.
[ 6.057293][ T1] RPC: Registered tcp NFSv4.1 backchannel transport module.
[ 6.074966][ T1] NET: Registered PF_XDP protocol family
[ 6.085885][ T1] pci_bus 0000:00: resource 4 [io 0x0000-0x0cf7 window]
[ 6.096625][ T1] pci_bus 0000:00: resource 5 [io 0x0d00-0xffff window]
[ 6.109619][ T1] pci_bus 0000:00: resource 6 [mem 0x000a0000-0x000bffff window]
[ 6.120976][ T1] pci_bus 0000:00: resource 7 [mem 0xc0000000-0xfebfefff window]
[ 6.133647][ T1] pci 0000:00:00.0: Limiting direct PCI/PCI transfers
[ 6.142869][ T1] PCI: CLS 0 bytes, default 64
[ 6.149381][ T1] PCI-DMA: Using software bounce buffering for IO (SWIOTLB)
[ 6.159403][ T1] software IO TLB: mapped [mem 0x00000000b4800000-0x00000000b8800000] (64MB)
[ 6.171518][ T1] ACPI: bus type thunderbolt registered
[ 6.183979][ T58] kworker/u8:1 (58) used greatest stack depth: 27960 bytes left
[ 6.202046][ T1] RAPL PMU: API unit is 2^-32 Joules, 0 fixed counters, 10737418240 ms ovfl timer
[ 6.248289][ T1] kvm_amd: CPU 0 isn't AMD or Hygon
[ 6.250533][ T60] kworker/u8:4 (60) used greatest stack depth: 27608 bytes left
[ 6.271191][ T1] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x1fb63109b96, max_idle_ns: 440795265316 ns
[ 6.291551][ T1] clocksource: Switched to clocksource tsc
[ 6.324112][ T1] Initialise system trusted keyrings
[ 6.332961][ T1] workingset: timestamp_bits=40 (anon: 36) max_order=21 bucket_order=0 (anon: 0)
[ 6.334236][ T83] kworker/u8:3 (83) used greatest stack depth: 27224 bytes left
[ 6.355907][ T1] DLM installed
[ 6.367227][ T1] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[ 6.383899][ T1] NFS: Registering the id_resolver key type
[ 6.391259][ T1] Key type id_resolver registered
[ 6.397724][ T1] Key type id_legacy registered
[ 6.406478][ T1] nfs4filelayout_init: NFSv4 File Layout Driver Registering...
[ 6.415903][ T1] nfs4flexfilelayout_init: NFSv4 Flexfile Layout Driver Registering...
[ 6.431784][ T1] smbdirect: subsystem loading...
[ 6.444709][ T1] smbdirect: subsystem loaded
[ 6.466654][ T1] Key type cifs.spnego registered
[ 6.473247][ T1] Key type cifs.idmap registered
[ 6.492794][ T1] ------------[ cut here ]------------
[ 6.499217][ T1] workqueue: ntfs-bg-io is using neither WQ_PERCPU or WQ_UNBOUND. Setting WQ_PERCPU.
[ 6.511961][ T1] WARNING: kernel/workqueue.c:5852 at __alloc_workqueue+0x1a11/0x1d70, CPU#0: swapper/0/1
[ 6.523353][ T1] Modules linked in:
[ 6.527811][ T1] CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT(full)
[ 6.537772][ T1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[ 6.550384][ T1] RIP: 0010:__alloc_workqueue+0x1a18/0x1d70
[ 6.557701][ T1] Code: ee ff ff e8 1a 3a 37 00 e9 82 fc ff ff e8 10 3a 37 00 e9 1b fd ff ff e8 06 3a 37 00 48 8d 3d ff b2 14 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 e2 39 37 00
[ 6.581233][ T1] RSP: 0000:ffffc900000675a8 EFLAGS: 00010293
[ 6.588920][ T1] RAX: ffffffff818bf07a RBX: 0000000000000000 RCX: ffff88801c6fdc40
[ 6.601131][ T1] RDX: 0000000000000000 RSI: ffff88801cfea170 RDI: ffffffff8fa0a380
[ 6.611178][ T1] RBP: ffffffff8ba15740 R08: ffff88801c6fdc40 R09: 0000000000000002
[ 6.622900][ T1] R10: 0000000000000102 R11: 0000000000000000 R12: dffffc0000000000
[ 6.633630][ T1] R13: ffff88801cfea000 R14: ffff88801cfea000 R15: 0000000000000000
[ 6.645760][ T1] FS: 0000000000000000(0000) GS:ffff888125edd000(0000) knlGS:0000000000000000
[ 6.658072][ T1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6.667255][ T1] CR2: ffff88823ffff000 CR3: 000000000df38000 CR4: 00000000003526f0
[ 6.677865][ T1] Call Trace:
[ 6.681328][ T1]
[ 6.685638][ T1] ? __pfx_kernel_fpu_begin_mask+0x10/0x10
[ 6.692958][ T1] alloc_workqueue_noprof+0xdf/0x200
[ 6.699123][ T1] ? __pfx_alloc_workqueue_noprof+0x10/0x10
[ 6.705789][ T1] ? lock_release+0x47/0x3b0
[ 6.710683][ T1] ? __pfx_init_ntfs_fs+0x10/0x10
[ 6.717232][ T1] init_ntfs_fs+0xc5/0x400
[ 6.722342][ T1] ? __pfx_init_ntfs_fs+0x10/0x10
[ 6.728377][ T1] ? do_raw_spin_lock+0x127/0x2f0
[ 6.733938][ T1] ? rcu_is_watching+0x11/0xb0
[ 6.740008][ T1] ? do_raw_spin_lock+0x127/0x2f0
[ 6.745273][ T1] ? rcu_is_watching+0x11/0xb0
[ 6.750517][ T1] ? rcu_is_watching+0x11/0xb0
[ 6.756104][ T1] ? rcu_is_watching+0x11/0xb0
[ 6.761833][ T1] ? trace_irq_enable+0x3b/0x130
[ 6.768572][ T1] ? _raw_spin_unlock_irqrestore+0x48/0x80
[ 6.775035][ T1] ? add_device_randomness+0xcb/0x130
[ 6.781573][ T1] ? __pfx_add_device_randomness+0x10/0x10
[ 6.788055][ T1] ? __pfx_ksmbd_server_terminate_conn+0x10/0x10
[ 6.794932][ T1] ? register_filesystem+0x336/0x360
[ 6.800861][ T1] do_one_initcall+0x24c/0x860
[ 6.806295][ T1] ? __pfx_init_ntfs_fs+0x10/0x10
[ 6.812297][ T1] ? __pfx_do_one_initcall+0x10/0x10
[ 6.818253][ T1] ? lapic_next_event+0xd/0x20
[ 6.823386][ T1] ? clockevents_program_event+0x48b/0x630
[ 6.830710][ T1] ? __pfx___schedule+0x10/0x10
[ 6.837346][ T1] ? rcu_is_watching+0x11/0xb0
[ 6.843707][ T1] ? trace_irq_disable+0x3b/0x130
[ 6.849073][ T1] ? preempt_schedule_irq+0x62/0x90
[ 6.854639][ T1] ? rcu_is_watching+0x11/0xb0
[ 6.861534][ T1] ? trace_irq_enable+0x3b/0x130
[ 6.867428][ T1] ? asm_sysvec_apic_timer_interrupt+0x16/0x20
[ 6.874299][ T1] ? parameq+0xbc/0x170
[ 6.879011][ T1] ? next_arg+0x49c/0x5e0
[ 6.883794][ T1] ? parameq+0x149/0x170
[ 6.889517][ T1] ? parse_args+0x9fb/0xb00
[ 6.894405][ T1] ? rcu_is_watching+0x11/0xb0
[ 6.899931][ T1] do_initcall_level+0x10a/0x1a0
[ 6.905587][ T1] ? kernel_init+0x19/0x1d0
[ 6.910699][ T1] do_initcalls+0x59/0xa0
[ 6.916724][ T1] kernel_init_freeable+0x29d/0x3e0
[ 6.922539][ T1] ? __pfx_kernel_init+0x10/0x10
[ 6.927866][ T1] kernel_init+0x19/0x1d0
[ 6.932962][ T1] ? __pfx_kernel_init+0x10/0x10
[ 6.938533][ T1] ret_from_fork+0x50c/0xb60
[ 6.943575][ T1] ? __pfx_ret_from_fork+0x10/0x10
[ 6.950108][ T1] ? __switch_to+0xc52/0x13e0
[ 6.956573][ T1] ? __pfx_kernel_init+0x10/0x10
[ 6.963289][ T1] ret_from_fork_asm+0x1a/0x30
[ 6.968464][ T1]
[ 6.971669][ T1] Kernel panic - not syncing: kernel: panic_on_warn set ...
[ 6.979437][ T1] CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT(full)
[ 6.981620][ T1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[ 6.981620][ T1] Call Trace:
[ 6.981620][ T1]
[ 6.981620][ T1] vpanic+0x568/0xa60
[ 6.981620][ T1] ? __pfx__printk+0x10/0x10
[ 6.981620][ T1] ? __pfx_vpanic+0x10/0x10
[ 6.981620][ T1] ? is_bpf_text_address+0x28e/0x2b0
[ 6.981620][ T1] ? is_bpf_text_address+0x22/0x2b0
[ 6.981620][ T1] panic+0xc1/0xd0
[ 6.981620][ T1] ? __pfx_panic+0x10/0x10
[ 6.981620][ T1] ? ret_from_fork_asm+0x1a/0x30
[ 6.981620][ T1] __warn+0x30c/0x4c0
[ 6.981620][ T1] ? __alloc_workqueue+0x1a11/0x1d70
[ 6.981620][ T1] ? __alloc_workqueue+0x1a11/0x1d70
[ 6.981620][ T1] __report_bug+0x32d/0x530
[ 6.981620][ T1] ? kernel_init+0x19/0x1d0
[ 6.981620][ T1] ? ret_from_fork+0x50c/0xb60
[ 6.981620][ T1] ? ret_from_fork_asm+0x1a/0x30
[ 6.981620][ T1] ? __alloc_workqueue+0x1a11/0x1d70
[ 6.981620][ T1] ? __pfx___report_bug+0x10/0x10
[ 6.981620][ T1] report_bug_entry+0x196/0x280
[ 6.981620][ T1] ? __alloc_workqueue+0x1a18/0x1d70
[ 6.981620][ T1] ? __alloc_workqueue+0x1a1d/0x1d70
[ 6.981620][ T1] handle_bug+0x108/0x220
[ 6.981620][ T1] exc_invalid_op+0x16/0x50
[ 6.981620][ T1] asm_exc_invalid_op+0x16/0x20
[ 6.981620][ T1] RIP: 0010:__alloc_workqueue+0x1a18/0x1d70
[ 6.981620][ T1] Code: ee ff ff e8 1a 3a 37 00 e9 82 fc ff ff e8 10 3a 37 00 e9 1b fd ff ff e8 06 3a 37 00 48 8d 3d ff b2 14 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 e2 39 37 00
[ 6.981620][ T1] RSP: 0000:ffffc900000675a8 EFLAGS: 00010293
[ 6.981620][ T1] RAX: ffffffff818bf07a RBX: 0000000000000000 RCX: ffff88801c6fdc40
[ 6.981620][ T1] RDX: 0000000000000000 RSI: ffff88801cfea170 RDI: ffffffff8fa0a380
[ 6.981620][ T1] RBP: ffffffff8ba15740 R08: ffff88801c6fdc40 R09: 0000000000000002
[ 6.981620][ T1] R10: 0000000000000102 R11: 0000000000000000 R12: dffffc0000000000
[ 6.981620][ T1] R13: ffff88801cfea000 R14: ffff88801cfea000 R15: 0000000000000000
[ 6.981620][ T1] ? __alloc_workqueue+0x1a0a/0x1d70
[ 6.981620][ T1] ? __alloc_workqueue+0x1a0a/0x1d70
[ 6.981620][ T1] ? __pfx_kernel_fpu_begin_mask+0x10/0x10
[ 6.981620][ T1] alloc_workqueue_noprof+0xdf/0x200
[ 6.981620][ T1] ? __pfx_alloc_workqueue_noprof+0x10/0x10
[ 6.981620][ T1] ? lock_release+0x47/0x3b0
[ 6.981620][ T1] ? __pfx_init_ntfs_fs+0x10/0x10
[ 6.981620][ T1] init_ntfs_fs+0xc5/0x400
[ 6.981620][ T1] ? __pfx_init_ntfs_fs+0x10/0x10
[ 6.981620][ T1] ? do_raw_spin_lock+0x127/0x2f0
[ 6.981620][ T1] ? rcu_is_watching+0x11/0xb0
[ 6.981620][ T1] ? do_raw_spin_lock+0x127/0x2f0
[ 6.981620][ T1] ? rcu_is_watching+0x11/0xb0
[ 6.981620][ T1] ? rcu_is_watching+0x11/0xb0
[ 6.981620][ T1] ? rcu_is_watching+0x11/0xb0
[ 6.981620][ T1] ? trace_irq_enable+0x3b/0x130
[ 6.981620][ T1] ? _raw_spin_unlock_irqrestore+0x48/0x80
[ 6.981620][ T1] ? add_device_randomness+0xcb/0x130
[ 6.981620][ T1] ? __pfx_add_device_randomness+0x10/0x10
[ 6.981620][ T1] ? __pfx_ksmbd_server_terminate_conn+0x10/0x10
[ 6.981620][ T1] ? register_filesystem+0x336/0x360
[ 6.981620][ T1] do_one_initcall+0x24c/0x860
[ 6.981620][ T1] ? __pfx_init_ntfs_fs+0x10/0x10
[ 6.981620][ T1] ? __pfx_do_one_initcall+0x10/0x10
[ 6.981620][ T1] ? lapic_next_event+0xd/0x20
[ 6.981620][ T1] ? clockevents_program_event+0x48b/0x630
[ 6.981620][ T1] ? __pfx___schedule+0x10/0x10
[ 6.981620][ T1] ? rcu_is_watching+0x11/0xb0
[ 6.981620][ T1] ? trace_irq_disable+0x3b/0x130
[ 6.981620][ T1] ? preempt_schedule_irq+0x62/0x90
[ 6.981620][ T1] ? rcu_is_watching+0x11/0xb0
[ 6.981620][ T1] ? trace_irq_enable+0x3b/0x130
[ 6.981620][ T1] ? asm_sysvec_apic_timer_interrupt+0x16/0x20
[ 6.981620][ T1] ? parameq+0xbc/0x170
[ 6.981620][ T1] ? next_arg+0x49c/0x5e0
[ 6.981620][ T1] ? parameq+0x149/0x170
[ 6.981620][ T1] ? parse_args+0x9fb/0xb00
[ 6.981620][ T1] ? rcu_is_watching+0x11/0xb0
[ 6.981620][ T1] do_initcall_level+0x10a/0x1a0
[ 6.981620][ T1] ? kernel_init+0x19/0x1d0
[ 6.981620][ T1] do_initcalls+0x59/0xa0
[ 6.981620][ T1] kernel_init_freeable+0x29d/0x3e0
[ 6.981620][ T1] ? __pfx_kernel_init+0x10/0x10
[ 6.981620][ T1] kernel_init+0x19/0x1d0
[ 6.981620][ T1] ? __pfx_kernel_init+0x10/0x10
[ 6.981620][ T1] ret_from_fork+0x50c/0xb60
[ 6.981620][ T1] ? __pfx_ret_from_fork+0x10/0x10
[ 6.981620][ T1] ? __switch_to+0xc52/0x13e0
[ 6.981620][ T1] ? __pfx_kernel_init+0x10/0x10
[ 6.981620][ T1] ret_from_fork_asm+0x1a/0x30
[ 6.981620][ T1]
[ 6.981620][ T1] Kernel Offset: disabled
[ 6.981620][ 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-build3750911273=/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 b0714e3765d
nothing to commit, working tree clean
tput: No value for $TERM and no -T specified
tput: No value for $TERM and no -T specified
Makefile:31: run command via tools/syz-env for best compatibility, see:
Makefile:32: https://github.com/google/syzkaller/blob/master/docs/contributing.md#using-syz-env
go list -f '{{.Stale}}' ./sys/syz-sysgen | grep -q false || go install ./sys/syz-sysgen
make .descriptions
tput: No value for $TERM and no -T specified
tput: No value for $TERM and no -T specified
Makefile:31: run command via tools/syz-env for best compatibility, see:
Makefile:32: https://github.com/google/syzkaller/blob/master/docs/contributing.md#using-syz-env
bin/syz-sysgen
touch .descriptions
GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=b0714e3765d142fe4804381880268a54cb4b984c -X 'github.com/google/syzkaller/prog.gitRevisionDate=20250502-153212'" -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=\"b0714e3765d142fe4804381880268a54cb4b984c\"
/usr/bin/ld: /tmp/ccMowLHt.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