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 150994944 bytes of page_ext
Node 0, zone DMA: page owner found early allocated 0 pages
Node 0, zone DMA32: page owner found early allocated 19108 pages
Node 0, zone Normal: page owner found early allocated 31 pages
Node 1, zone Normal: page owner found early allocated 17863 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:
ffffffff8e164d80 (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: ffffffff99a17970 (&tkd->lock){....}-{2:2}, at: class_raw_spinlock_irqsave_constructor include/linux/spinlock.h:572 [inline]
#0: ffffffff99a17970 (&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+0x1d8/0x3e0 init/main.c:1087
x86_64_start_reservations+0x24/0x30 arch/x86/kernel/head64.c:310
x86_64_start_kernel+0x170/0x1e0 arch/x86/kernel/head64.c:291
common_startup_64+0x13e/0x157
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@10.128.0.206" "pwd"]: exit status 255
ssh: connect to host 10.128.0.206 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 a35f3621-293a-7c17-83e1-ac9a499fc82f
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
[ 0.000008][ T0] kvm-clock: using sched offset of 8425602963 cycles
[ 0.001944][ T0] clocksource: kvm-clock: mask: 0xffffffffffffffff max_cycles: 0x1cd42e4dffb, max_idle_ns: 881590591483 ns
[ 0.007547][ T0] tsc: Detected 2199.998 MHz processor
[ 0.013147][ T0] last_pfn = 0x240000 max_arch_pfn = 0x400000000
[ 0.015092][ T0] MTRR map: 4 entries (3 fixed + 1 variable; max 19), built from 8 variable MTRRs
[ 0.018016][ T0] x86/PAT: Configuration [0-7]: WB WC UC- UC WB WP UC- WT
[ 0.020802][ T0] last_pfn = 0xbfffd max_arch_pfn = 0x400000000
[ 0.027689][ T0] found SMP MP-table at [mem 0x000f2890-0x000f289f]
[ 0.030006][ T0] Using GB pages for direct mapping
[ 0.034851][ T0] ACPI: Early table checksum verification disabled
[ 0.037430][ T0] ACPI: RSDP 0x00000000000F2610 000014 (v00 Google)
[ 0.039785][ T0] ACPI: RSDT 0x00000000BFFFFFB0 000038 (v01 Google GOOGRSDT 00000001 GOOG 00000001)
[ 0.043344][ T0] ACPI: FACP 0x00000000BFFFF370 0000F4 (v02 Google GOOGFACP 00000001 GOOG 00000001)
[ 0.046953][ T0] ACPI: DSDT 0x00000000BFFFD900 001A64 (v01 Google GOOGDSDT 00000001 GOOG 00000001)
[ 0.050224][ T0] ACPI: FACS 0x00000000BFFFD8C0 000040
[ 0.052089][ T0] ACPI: FACS 0x00000000BFFFD8C0 000040
[ 0.054742][ T0] ACPI: SRAT 0x00000000BFFFFEA0 0000C8 (v03 Google GOOGSRAT 00000001 GOOG 00000001)
[ 0.058364][ T0] ACPI: APIC 0x00000000BFFFFDF0 000076 (v05 Google GOOGAPIC 00000001 GOOG 00000001)
[ 0.061427][ T0] ACPI: SSDT 0x00000000BFFFF470 000980 (v01 Google GOOGSSDT 00000001 GOOG 00000001)
[ 0.064888][ T0] ACPI: WAET 0x00000000BFFFFE70 000028 (v01 Google GOOGWAET 00000001 GOOG 00000001)
[ 0.068602][ T0] ACPI: Reserving FACP table memory at [mem 0xbffff370-0xbffff463]
[ 0.071516][ T0] ACPI: Reserving DSDT table memory at [mem 0xbfffd900-0xbffff363]
[ 0.074579][ T0] ACPI: Reserving FACS table memory at [mem 0xbfffd8c0-0xbfffd8ff]
[ 0.077549][ T0] ACPI: Reserving FACS table memory at [mem 0xbfffd8c0-0xbfffd8ff]
[ 0.080592][ T0] ACPI: Reserving SRAT table memory at [mem 0xbffffea0-0xbfffff67]
[ 0.083256][ T0] ACPI: Reserving APIC table memory at [mem 0xbffffdf0-0xbffffe65]
[ 0.088560][ T0] ACPI: Reserving SSDT table memory at [mem 0xbffff470-0xbffffdef]
[ 0.091556][ T0] ACPI: Reserving WAET table memory at [mem 0xbffffe70-0xbffffe97]
[ 0.095171][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x00000000-0x0009ffff]
[ 0.097836][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x00100000-0xbfffffff]
[ 0.099950][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x100000000-0x23fffffff]
[ 0.102819][ T0] NUMA: Node 0 [mem 0x00001000-0x0009ffff] + [mem 0x00100000-0xbfffffff] -> [mem 0x00001000-0xbfffffff]
[ 0.106868][ T0] NUMA: Node 0 [mem 0x00001000-0xbfffffff] + [mem 0x100000000-0x23fffffff] -> [mem 0x00001000-0x23fffffff]
[ 0.110616][ T0] Faking node 0 at [mem 0x0000000000001000-0x0000000140000fff] (5120MB)
[ 0.113482][ T0] Faking node 1 at [mem 0x0000000140001000-0x000000023fffffff] (4095MB)
[ 0.116311][ T0] NODE_DATA(0) allocated [mem 0x13fffb880-0x140000fff]
[ 0.119859][ T0] NODE_DATA(1) allocated [mem 0x23fff7880-0x23fffcfff]
[ 0.613457][ T0] KernelAddressSanitizer initialized (generic)
[ 0.617192][ T0] ACPI: PM-Timer IO Port: 0xb008
[ 0.619001][ T0] ACPI: LAPIC_NMI (acpi_id[0xff] dfl dfl lint[0x1])
[ 0.621435][ T0] IOAPIC[0]: apic_id 0, version 17, address 0xfec00000, GSI 0-23
[ 0.624343][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 high level)
[ 0.627224][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
[ 0.630331][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 high level)
[ 0.634052][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 high level)
[ 0.637213][ T0] ACPI: Using ACPI (MADT) for SMP configuration information
[ 0.641143][ T0] CPU topo: Max. logical packages: 1
[ 0.643393][ T0] CPU topo: Max. logical nodes: 1
[ 0.645867][ T0] CPU topo: Num. nodes per package: 1
[ 0.648235][ T0] CPU topo: Max. logical dies: 1
[ 0.650428][ T0] CPU topo: Max. dies per package: 1
[ 0.652303][ T0] CPU topo: Max. threads per core: 2
[ 0.654073][ T0] CPU topo: Num. cores per package: 1
[ 0.656125][ T0] CPU topo: Num. threads per package: 2
[ 0.658575][ T0] CPU topo: Allowing 2 present CPUs plus 0 hotplug CPUs
[ 0.661444][ T0] PM: hibernation: Registered nosave memory: [mem 0x00000000-0x00000fff]
[ 0.665086][ T0] PM: hibernation: Registered nosave memory: [mem 0x0009f000-0x000fffff]
[ 0.668247][ T0] PM: hibernation: Registered nosave memory: [mem 0xbfffd000-0xffffffff]
[ 0.672283][ T0] [gap 0xc0000000-0xfffbbfff] available for PCI devices
[ 0.675089][ T0] Booting paravirtualized kernel on KVM
[ 0.677356][ T0] clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[ 0.842030][ T0] Zone ranges:
[ 0.843070][ T0] DMA [mem 0x0000000000001000-0x0000000000ffffff]
[ 0.845490][ T0] DMA32 [mem 0x0000000001000000-0x00000000ffffffff]
[ 0.848691][ T0] Normal [mem 0x0000000100000000-0x000000023fffffff]
[ 0.851689][ T0] Device empty
[ 0.853154][ T0] Movable zone start for each node
[ 0.854962][ T0] Early memory node ranges
[ 0.856568][ T0] node 0: [mem 0x0000000000001000-0x000000000009efff]
[ 0.859555][ T0] node 0: [mem 0x0000000000100000-0x00000000bfffcfff]
[ 0.862607][ T0] node 0: [mem 0x0000000100000000-0x0000000140000fff]
[ 0.865733][ T0] node 1: [mem 0x0000000140001000-0x000000023fffffff]
[ 0.869218][ T0] Initmem setup node 0 [mem 0x0000000000001000-0x0000000140000fff]
[ 0.872935][ T0] Initmem setup node 1 [mem 0x0000000140001000-0x000000023fffffff]
[ 0.876036][ T0] On node 0, zone DMA: 1 pages in unavailable ranges
[ 0.879331][ T0] On node 0, zone DMA: 97 pages in unavailable ranges
[ 0.947435][ T0] On node 0, zone Normal: 3 pages in unavailable ranges
[ 1.015520][ T0] setup_percpu: NR_CPUS:8 nr_cpumask_bits:2 nr_cpu_ids:2 nr_node_ids:2
[ 1.019586][ T0] percpu: Embedded 71 pages/cpu s250888 r8192 d31736 u1048576
[ 1.022495][ serialport: Connected to syzkaller.us-central1-f.ci2-linux-5-15-kasan-test-job-parallel-1 port 1 (session ID: 6122a74e5137dbca5c28f35a96ea998ec06c3e54121e715ce9403eed8e8a7396, active connections: 1).
T0] kvm-guest: PV spinlocks enabled
[ 1.024807][ T0] PV qspinlock hash table entries: 256 (order: 0, 4096 bytes, linear)
[ 1.027620][ 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 \
[ 1.060801][ T0] Kernel command line: comedi.comedi_num_legacy_minors=4 panic_on_warn=1 BOOT_IMAGE=/boot/bzImage root=/dev/sda1 console=ttyS0
[ 1.068066][ T0] Unknown kernel command line parameters "nbds_max=32", will be passed to user space.
[ 1.071652][ T0] random: crng init done
[ 1.073128][ T0] printk: log buffer data + meta data: 262144 + 917504 = 1179648 bytes
[ 1.076700][ T0] software IO TLB: area num 2.
[ 1.120410][ T0] Fallback order for Node 0: 0 1
[ 1.120435][ T0] Fallback order for Node 1: 1 0
[ 1.120450][ T0] Built 2 zonelists, mobility grouping on. Total pages: 2097051
[ 1.127219][ T0] Policy zone: Normal
[ 1.128542][ T0] mem auto-init: stack:all(zero), heap alloc:on, heap free:off
[ 1.132703][ T0] stackdepot: allocating hash table via alloc_large_system_hash
[ 1.135548][ T0] stackdepot hash table entries: 1048576 (order: 12, 16777216 bytes, linear)
[ 1.146379][ T0] stackdepot: allocating space for 8192 stack pools via memblock
[ 2.030275][ T0] **********************************************************
[ 2.032818][ T0] ** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE **
[ 2.035135][ T0] ** **
[ 2.037759][ T0] ** This system shows unhashed kernel memory addresses **
[ 2.040095][ T0] ** via the console, logs, and other interfaces. This **
[ 2.042497][ T0] ** might reduce the security of your system. **
[ 2.044848][ T0] ** **
[ 2.047817][ T0] ** If you see this message and you are not debugging **
[ 2.050882][ T0] ** the kernel, report this immediately to your system **
[ 2.053564][ T0] ** administrator! **
[ 2.056377][ T0] ** **
[ 2.059427][ T0] ** Use hash_pointers=always to force this mode off **
[ 2.061745][ T0] ** **
[ 2.064515][ T0] ** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE **
[ 2.067755][ T0] **********************************************************
[ 2.073857][ T0] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=2
[ 2.247988][ T0] allocated 150994944 bytes of page_ext
[ 2.250394][ T0] Node 0, zone DMA: page owner found early allocated 0 pages
[ 2.266370][ T0] Node 0, zone DMA32: page owner found early allocated 19108 pages
[ 2.273898][ T0] Node 0, zone Normal: page owner found early allocated 31 pages
[ 2.286428][ T0] Node 1, zone Normal: page owner found early allocated 17863 pages
[ 2.289859][ T0] Kernel/User page tables isolation: enabled
[ 2.293164][ T0] Dynamic Preempt: full
[ 2.296552][ T0] Running RCU self tests
[ 2.298227][ T0] Running RCU synchronous self tests
[ 2.299891][ T0] rcu: Preemptible hierarchical RCU implementation.
[ 2.302258][ T0] rcu: RCU lockdep checking is enabled.
[ 2.304011][ T0] rcu: RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=2.
[ 2.306829][ T0] rcu: RCU callback double-/use-after-free debug is enabled.
[ 2.309352][ T0] rcu: RCU debug extended QS entry/exit.
[ 2.312206][ T0] All grace periods are expedited (rcu_expedited).
[ 2.314342][ T0] Trampoline variant of Tasks RCU enabled.
[ 2.316537][ T0] Tracing variant of Tasks RCU enabled.
[ 2.318377][ T0] rcu: RCU calculated value of scheduler-enlistment delay is 10 jiffies.
[ 2.321703][ T0] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2
[ 2.325019][ T0] Running RCU synchronous self tests
[ 2.326758][ T0] RCU Tasks: Setting shift to 1 and lim to 1 rcu_task_cb_adjust=1 rcu_task_cpu_ids=2.
[ 2.469084][ T0] NR_IRQS: 4352, nr_irqs: 440, preallocated irqs: 16
[ 2.472958][ T0] rcu: srcu_init: Setting srcu_struct sizes based on contention.
[ 2.475679][ T0] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[ 2.479427][ T0]
[ 2.480100][ T0] =============================
[ 2.481549][ T0] [ BUG: Invalid wait context ]
[ 2.483157][ T0] syzkaller #0 Not tainted
[ 2.484431][ T0] -----------------------------
[ 2.485871][ T0] swapper/0/0 is trying to lock:
[ 2.487601][ T0] ffffffff8e164d80 (clocksource_mutex){....}-{4:4}, at: __clocksource_register_scale+0x91d/0xff0
[ 2.490706][ T0] other info that might help us debug this:
[ 2.492894][ T0] context-{5:5}
[ 2.494077][ T0] 1 lock held by swapper/0/0:
[ 2.496049][ T0] #0: ffffffff99a17970 (&tkd->lock){....}-{2:2}, at: timekeeping_init+0x1f6/0x350
[ 2.499219][ T0] stack backtrace:
[ 2.500591][ T0] CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT(full)
[ 2.500626][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[ 2.500634][ T0] Call Trace:
[ 2.500643][ T0]
[ 2.500650][ T0] dump_stack_lvl+0xe8/0x150
[ 2.500671][ T0] __lock_acquire+0xe4c/0x2df0
[ 2.500687][ T0] ? __pfx__prb_read_valid+0x10/0x10
[ 2.500705][ T0] ? up+0x138/0x2b0
[ 2.500718][ T0] ? __pfx_up+0x10/0x10
[ 2.500729][ T0] ? __clocksource_register_scale+0x91d/0xff0
[ 2.500745][ T0] lock_acquire+0x106/0x350
[ 2.500755][ T0] ? __clocksource_register_scale+0x91d/0xff0
[ 2.500770][ T0] ? console_unlock+0x13f/0x1b0
[ 2.500782][ T0] ? __might_resched+0x71/0x4d0
[ 2.500794][ T0] __mutex_lock+0x19d/0x15e0
[ 2.500804][ T0] ? __clocksource_register_scale+0x91d/0xff0
[ 2.500818][ T0] ? __wake_up_klogd+0xe6/0x120
[ 2.500833][ T0] ? vprintk_emit+0x48a/0x4e0
[ 2.500846][ T0] ? __clocksource_register_scale+0x91d/0xff0
[ 2.500859][ T0] ? __pfx___mutex_lock+0x10/0x10
[ 2.500872][ T0] ? clocksource_arch_init+0x86/0x110
[ 2.500893][ T0] __clocksource_register_scale+0x91d/0xff0
[ 2.500909][ T0] ? __hrtimer_setup+0x1b7/0x250
[ 2.500924][ T0] clocksource_default_clock+0x20/0x40
[ 2.500945][ T0] timekeeping_init+0x205/0x350
[ 2.500960][ T0] ? __pfx_timekeeping_init+0x10/0x10
[ 2.500975][ T0] ? __split_page_owner+0x2d/0x300
[ 2.500986][ T0] ? __split_page_owner+0x2d/0x300
[ 2.500996][ T0] ? vdso_setup_data_pages+0xa0/0xf0
[ 2.501011][ T0] ? __asan_memcpy+0x40/0x70
[ 2.501026][ T0] start_kernel+0x1d8/0x3e0
[ 2.501043][ T0] x86_64_start_reservations+0x24/0x30
[ 2.501057][ T0] x86_64_start_kernel+0x170/0x1e0
[ 2.501067][ T0] common_startup_64+0x13e/0x157
[ 2.501083][ T0]
[ 2.502798][ T0] Console: colour VGA+ 80x25
[ 2.579656][ T0] printk: legacy console [ttyS0] enabled
[ 2.579656][ T0] printk: legacy console [ttyS0] enabled
[ 2.584421][ T0] printk: legacy bootconsole [earlyser0] disabled
[ 2.584421][ T0] printk: legacy bootconsole [earlyser0] disabled
[ 2.589201][ T0] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar
[ 2.592739][ T0] ... MAX_LOCKDEP_SUBCLASSES: 8
[ 2.594802][ T0] ... MAX_LOCK_DEPTH: 48
[ 2.597559][ T0] ... MAX_LOCKDEP_KEYS: 8192
[ 2.599378][ T0] ... CLASSHASH_SIZE: 4096
[ 2.601459][ T0] ... MAX_LOCKDEP_ENTRIES: 1048576
[ 2.603674][ T0] ... MAX_LOCKDEP_CHAINS: 1048576
[ 2.605791][ T0] ... CHAINHASH_SIZE: 524288
[ 2.607739][ T0] memory used by lock dependency info: 106625 kB
[ 2.610722][ T0] memory used for stack traces: 8320 kB
[ 2.612736][ T0] per task-struct memory footprint: 1920 bytes
[ 2.614874][ T0] mempolicy: Enabling automatic NUMA balancing. Configure with numa_balancing= or the kernel.numa_balancing sysctl
[ 2.619155][ T0] ACPI: Core revision 20260408
[ 2.621741][ T0] APIC: Switch to symmetric I/O mode setup
[ 2.624882][ T0] x2apic enabled
[ 2.633145][ T0] APIC: Switched APIC routing to: physical x2apic
[ 2.645937][ T0] ..TIMER: vector=0x30 apic1=0 pin1=0 apic2=-1 pin2=-1
[ 2.648801][ T0] clocksource: tsc-early: mask: 0xffffffffffffffff max_cycles: 0x1fb63109b96, max_idle_ns: 440795265316 ns
[ 2.653003][ T0] Calibrating delay loop (skipped) preset value.. 4399.99 BogoMIPS (lpj=21999980)
[ 2.657377][ T0] numa_add_cpu cpu 0 node 0: mask now 0
[ 2.659407][ T0] numa_add_cpu cpu 0 node 1: mask now 0
[ 2.661448][ T0] Last level iTLB entries: 4KB 64, 2MB 8, 4MB 8
[ 2.663002][ T0] Last level dTLB entries: 4KB 64, 2MB 32, 4MB 32, 1GB 4
[ 2.665646][ T0] mitigations: Enabled attack vectors: user_kernel, user_user, guest_host, guest_guest, SMT mitigations: auto
[ 2.670622][ T0] Speculative Store Bypass: Mitigation: Speculative Store Bypass disabled via prctl
[ 2.673010][ T0] Spectre V2 : Mitigation: IBRS
[ 2.674683][ T0] RETBleed: Mitigation: IBRS
[ 2.676199][ T0] ITS: Mitigation: Aligned branch/return thunks
[ 2.678757][ T0] Spectre V2 : User space: Mitigation: STIBP via prctl
[ 2.683005][ T0] MDS: Mitigation: Clear CPU buffers
[ 2.685244][ T0] TAA: Mitigation: Clear CPU buffers
[ 2.687371][ T0] MMIO Stale Data: Vulnerable: Clear CPU buffers attempted, no microcode
[ 2.692998][ T0] Spectre V1 : Mitigation: usercopy/swapgs barriers and __user pointer sanitization
[ 2.697088][ T0] Spectre V2 : Spectre v2 / SpectreRSB: Filling RSB on context switch and VMEXIT
[ 2.701174][ T0] Spectre V2 : mitigation: Enabling conditional Indirect Branch Prediction Barrier
[ 2.703052][ T0] active return thunk: its_return_thunk
[ 2.706511][ T0] Spectre V2 : Spectre BHI mitigation: SW BHB clearing on syscall and VM exit
[ 2.710735][ T0] x86/fpu: Supporting XSAVE feature 0x001: 'x87 floating point registers'
[ 2.713008][ T0] x86/fpu: Supporting XSAVE feature 0x002: 'SSE registers'
[ 2.716069][ T0] x86/fpu: Supporting XSAVE feature 0x004: 'AVX registers'
[ 2.719149][ T0] x86/fpu: xstate_offset[2]: 576, xstate_sizes[2]: 256
[ 2.723004][ T0] x86/fpu: Enabled xstate features 0x7, context size is 832 bytes, using 'standard' format.
[ 3.100014][ T0] pid_max: default: 32768 minimum: 301
[ 3.103675][ T0] landlock: Up and running.
[ 3.105601][ T0] Yama: becoming mindful.
[ 3.107638][ T0] TOMOYO Linux initialized
[ 3.110421][ T0] AppArmor: AppArmor initialized
[ 3.113853][ T0] LSM support for eBPF active
[ 3.123004][ T0] Dentry cache hash table entries: 1048576 (order: 11, 8388608 bytes, vmalloc hugepage)
[ 3.129683][ T0] Inode-cache hash table entries: 524288 (order: 10, 4194304 bytes, vmalloc hugepage)
[ 3.133380][ T0] Mount-cache hash table entries: 16384 (order: 5, 131072 bytes, vmalloc)
[ 3.137759][ T0] Mountpoint-cache hash table entries: 16384 (order: 5, 131072 bytes, vmalloc)
[ 3.142268][ T0] VFS: Finished mounting rootfs on nullfs
[ 3.145663][ T0] Running RCU synchronous self tests
[ 3.147898][ T0] Running RCU synchronous self tests
[ 3.272876][ T1] smpboot: CPU0: Intel(R) Xeon(R) CPU @ 2.20GHz (family: 0x6, model: 0x4f, stepping: 0x0)
[ 3.272984][ T1] Performance Events: unsupported CPU family 6 model 79 no PMU driver, software events only.
[ 3.273131][ T1] signal: max sigframe size: 1776
[ 3.275438][ T1] rcu: Hierarchical SRCU implementation.
[ 3.277781][ T1] rcu: Max phase no-delay instances is 1000.
[ 3.280606][ T1] Timer migration: 1 hierarchy levels; 8 children per group; 0 crossnode level
[ 3.349227][ T1] NMI watchdog: Perf NMI watchdog permanently disabled
[ 3.352947][ T1] smp: Bringing up secondary CPUs ...
[ 3.364127][ T1] smpboot: x86: Booting SMP configuration:
[ 3.366218][ T1] .... node #0, CPUs: #1
[ 0.157329][ T0] numa_add_cpu cpu 1 node 0: mask now 0-1
[ 0.157329][ T0] numa_add_cpu cpu 1 node 1: mask now 0-1
[ 3.373649][ 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.
[ 3.379843][ 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.
[ 3.383075][ 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.
[ 3.393130][ T1] smp: Brought up 2 nodes, 2 CPUs
[ 3.395135][ T1] smpboot: Total of 2 processors activated (8799.99 BogoMIPS)
[ 3.399121][ T1] Memory: 6492672K/8388204K available (168961K kernel code, 28513K rwdata, 39112K rodata, 25780K init, 119272K bss, 1722252K reserved, 0K cma-reserved)
[ 3.405337][ T1] devtmpfs: initialized
[ 3.414708][ T1] x86/mm: Memory block size: 128MB
[ 3.463184][ T1] Running RCU synchronous self tests
[ 3.465429][ T1] Running RCU synchronous self tests
[ 3.465466][ T1] Running RCU Tasks wait API self tests
[ 3.465604][ T1] Running RCU Tasks Trace wait API self tests
[ 3.473401][ T1] posixtimers hash table entries: 1024 (order: 5, 73728 bytes, vmalloc)
[ 3.476776][ T1] futex hash table entries: 256 (32768 bytes on 2 NUMA nodes, total 64 KiB, linear).
[ 3.478058][ T1] xor: automatically using best checksumming function avx
[ 3.485819][ T1] PM: RTC time: 20:14:08, date: 2026-06-18
[ 3.499557][ T1] NET: Registered PF_NETLINK/PF_ROUTE protocol family
[ 3.506051][ T1] audit: initializing netlink subsys (disabled)
[ 3.508648][ T28] audit: type=2000 audit(1781813648.171:1): state=initialized audit_enabled=0 res=1
[ 3.516546][ T1] thermal_sys: Registered thermal governor 'step_wise'
[ 3.516563][ T1] thermal_sys: Registered thermal governor 'user_space'
[ 3.519898][ T1] cpuidle: using governor menu
[ 3.523181][ T10] Callback from call_rcu_tasks_trace() invoked.
[ 3.524420][ T1] NET: Registered PF_QIPCRTR protocol family
[ 3.531151][ T1] Freeing SMP alternatives memory: 132K
[ 3.535380][ T1] dca service started, version 1.12.1
[ 3.537923][ T1] PCI: Using configuration type 1 for base access
[ 3.563877][ T1] HugeTLB: registered 1.00 GiB page size, pre-allocated 0 pages
[ 3.567765][ T1] HugeTLB: 16380 KiB vmemmap can be freed for a 1.00 GiB page
[ 3.571075][ T1] HugeTLB: registered 2.00 MiB page size, pre-allocated 0 pages
[ 3.573013][ T1] HugeTLB: 28 KiB vmemmap can be freed for a 2.00 MiB page
[ 3.599974][ T1] raid6: skipped pq benchmark and selected avx2x4
[ 3.602619][ T1] raid6: using avx2x2 recovery algorithm
[ 3.605663][ T1] ACPI: Added _OSI(Module Device)
[ 3.607761][ T1] ACPI: Added _OSI(Processor Device)
[ 3.610232][ T1] ACPI: Added _OSI(Processor Aggregator Device)
[ 3.759086][ T1] ACPI: 2 ACPI AML tables successfully acquired and loaded
[ 3.823137][ T1] ACPI: \_SB_: platform _OSC: OS support mask [000e7eee]
[ 3.846750][ T1] ACPI: Interpreter enabled
[ 3.848895][ T1] ACPI: PM: (supports S0 S3 S4 S5)
[ 3.850968][ T1] ACPI: Using IOAPIC for interrupt routing
[ 3.853425][ T1] PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug
[ 3.857747][ T1] PCI: Ignoring E820 reservations for host bridge windows
[ 3.865915][ T1] ACPI: Enabled 16 GPEs in block 00 to 0F
[ 4.065229][ T1] ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-ff])
[ 4.069135][ T1] acpi PNP0A03:00: _OSC: OS supports [ASPM ClockPM Segments MSI HPX-Type3]
[ 4.073113][ T1] acpi PNP0A03:00: _OSC: not requesting OS control; OS requires [ExtendedConfig ASPM ClockPM MSI]
[ 4.078508][ T1] acpi PNP0A03:00: _OSC: platform retains control of PCIe features (AE_ERROR)
[ 4.082397][ T1] acpi PNP0A03:00: fail to add MMCONFIG information, can't access extended configuration space under this bridge
[ 4.102594][ T1] PCI host bridge to bus 0000:00
[ 4.103003][ T1] pci_bus 0000:00: Unknown NUMA node; performance will be reduced
[ 4.106566][ T1] pci_bus 0000:00: root bus resource [io 0x0000-0x0cf7 window]
[ 4.109765][ T1] pci_bus 0000:00: root bus resource [io 0x0d00-0xffff window]
[ 4.113014][ T1] pci_bus 0000:00: root bus resource [mem 0x000a0000-0x000bffff window]
[ 4.117111][ T1] pci_bus 0000:00: root bus resource [mem 0xc0000000-0xfebfefff window]
[ 4.120510][ T1] pci_bus 0000:00: root bus resource [bus 00-ff]
[ 4.123224][ T1] pci 0000:00:00.0: [8086:1237] type 00 class 0x060000 conventional PCI endpoint
[ 4.130447][ T1] pci 0000:00:01.0: [8086:7110] type 00 class 0x060100 conventional PCI endpoint
[ 4.138526][ T1] pci 0000:00:01.3: [8086:7113] type 00 class 0x068000 conventional PCI endpoint
[ 4.147736][ T1] pci 0000:00:01.3: quirk: [io 0xb000-0xb03f] claimed by PIIX4 ACPI
[ 4.157333][ T1] pci 0000:00:03.0: [1af4:1004] type 00 class 0x000000 conventional PCI endpoint
[ 4.168471][ T1] pci 0000:00:03.0: BAR 0 [io 0xc000-0xc03f]
[ 4.170936][ T1] pci 0000:00:03.0: BAR 1 [mem 0xfe800000-0xfe80007f]
[ 4.177906][ T1] pci 0000:00:04.0: [1af4:1000] type 00 class 0x020000 conventional PCI endpoint
[ 4.185678][ T1] pci 0000:00:04.0: BAR 0 [io 0xc040-0xc07f]
[ 4.188339][ T1] pci 0000:00:04.0: BAR 1 [mem 0xfe801000-0xfe80107f]
[ 4.197646][ T1] pci 0000:00:05.0: [1ae0:a002] type 00 class 0x030000 conventional PCI endpoint
[ 4.212934][ T1] pci 0000:00:05.0: BAR 0 [mem 0xfe000000-0xfe7fffff]
[ 4.218114][ T1] pci 0000:00:05.0: Video device with shadowed ROM at [mem 0x000c0000-0x000dffff]
[ 4.226847][ T1] pci 0000:00:06.0: [1af4:1002] type 00 class 0x00ff00 conventional PCI endpoint
[ 4.237486][ T1] pci 0000:00:06.0: BAR 0 [io 0xc080-0xc09f]
[ 4.244979][ T1] pci 0000:00:07.0: [1af4:1005] type 00 class 0x00ff00 conventional PCI endpoint
[ 4.253054][ T1] pci 0000:00:07.0: BAR 0 [io 0xc0a0-0xc0bf]
[ 4.255726][ T1] pci 0000:00:07.0: BAR 1 [mem 0xfe802000-0xfe80203f]
[ 4.296345][ T1] ACPI: PCI: Interrupt link LNKA configured for IRQ 10
[ 4.305915][ T1] ACPI: PCI: Interrupt link LNKB configured for IRQ 10
[ 4.316433][ T1] ACPI: PCI: Interrupt link LNKC configured for IRQ 11
[ 4.326463][ T1] ACPI: PCI: Interrupt link LNKD configured for IRQ 11
[ 4.333457][ T1] ACPI: PCI: Interrupt link LNKS configured for IRQ 9
[ 4.363066][ T1] iommu: Default domain type: Translated
[ 4.365673][ T1] iommu: DMA domain TLB invalidation policy: lazy mode
[ 4.374054][ T1] SCSI subsystem initialized
[ 4.383487][ T1] libata version 3.00 loaded.
[ 4.386707][ T1] ACPI: bus type USB registered
[ 4.389900][ T1] usbcore: registered new interface driver usbfs
[ 4.393201][ T1] usbcore: registered new interface driver hub
[ 4.396116][ T1] usbcore: registered new device driver usb
[ 4.400900][ T1] mc: Linux media interface: v0.10
[ 4.403296][ T1] videodev: Linux video capture interface: v2.00
[ 4.406959][ T1] pps_core: LinuxPPS API ver. 1 registered
[ 4.409705][ T1] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti
[ 4.413141][ T1] PTP clock support registered
[ 4.423317][ T1] EDAC MC: Ver: 3.0.0
[ 4.430341][ T1] Advanced Linux Sound Architecture Driver Initialized.
[ 4.438795][ T1] Bluetooth: Core ver 2.22
[ 4.441038][ T1] NET: Registered PF_BLUETOOTH protocol family
[ 4.442999][ T1] Bluetooth: HCI device and connection manager initialized
[ 4.446174][ T1] Bluetooth: HCI socket layer initialized
[ 4.449226][ T1] Bluetooth: L2CAP socket layer initialized
[ 4.453093][ T1] Bluetooth: SCO socket layer initialized
[ 4.455278][ T1] NET: Registered PF_ATMPVC protocol family
[ 4.457991][ T1] NetLabel: Initializing
[ 4.459693][ T1] NetLabel: domain hash size = 128
[ 4.461859][ T1] NetLabel: protocols = UNLABELED CIPSOv4 CALIPSO
[ 4.463580][ T1] NetLabel: unlabeled traffic allowed by default
[ 4.470818][ T1] nfc: nfc_init: NFC Core ver 0.1
[ 4.473224][ T1] NET: Registered PF_NFC protocol family
[ 4.475833][ T1] PCI: Using ACPI for IRQ routing
[ 4.478166][ T1] PCI: pci_cache_line_size set to 64 bytes
[ 4.481120][ T1] e820: register RAM buffer resource [mem 0x0009fc00-0x0009ffff]
[ 4.483044][ T1] e820: register RAM buffer resource [mem 0xbfffd000-0xbfffffff]
[ 4.490526][ T1] pci 0000:00:05.0: vgaarb: setting as boot VGA device
[ 4.490526][ T1] pci 0000:00:05.0: vgaarb: bridge control possible
[ 4.490526][ T1] pci 0000:00:05.0: vgaarb: VGA device added: decodes=io+mem,owns=io+mem,locks=none
[ 4.493030][ T1] vgaarb: loaded
[ 4.505408][ T1] clocksource: Switched to clocksource kvm-clock
[ 4.512285][ T1] VFS: Disk quotas dquot_6.6.0
[ 4.512984][ T1] VFS: Dquot-cache hash table entries: 512 (4096 bytes)
[ 4.521070][ T1] netfs: FS-Cache loaded
[ 4.524165][ T1] CacheFiles: Loaded
[ 4.526714][ T1] TOMOYO: 2.6.0
[ 4.528404][ T1] Mandatory Access Control activated.
[ 4.535507][ T1] AppArmor: AppArmor Filesystem Enabled
[ 4.538682][ T1] pnp: PnP ACPI init
[ 4.564808][ T1] pnp: PnP ACPI: found 6 devices
[ 4.623053][ T1] clocksource: acpi_pm: mask: 0xffffff max_cycles: 0xffffff, max_idle_ns: 2085701024 ns
[ 4.629005][ T1] NET: Registered PF_INET protocol family
[ 4.632921][ T1] IP idents hash table entries: 131072 (order: 8, 1048576 bytes, vmalloc)
[ 4.649255][ T1] tcp_listen_portaddr_hash hash table entries: 4096 (order: 7, 294912 bytes, vmalloc)
[ 4.654050][ T1] Table-perturb hash table entries: 65536 (order: 6, 262144 bytes, vmalloc)
[ 4.658984][ T1] TCP established hash table entries: 65536 (order: 7, 524288 bytes, vmalloc)
[ 4.671142][ T1] TCP bind hash table entries: 65536 (order: 12, 9437184 bytes, vmalloc hugepage)
[ 4.680821][ T1] TCP: Hash tables configured (established 65536 bind 65536)
[ 4.686107][ T1] MPTCP token hash table entries: 8192 (order: 8, 720896 bytes, vmalloc)
[ 4.691505][ T1] UDP hash table entries: 4096 (order: 8, 1048576 bytes, vmalloc)
[ 4.696173][ T1] NET: Registered PF_UNIX/PF_LOCAL protocol family
[ 4.704234][ T1] RPC: Registered named UNIX socket transport module.
[ 4.707573][ T1] RPC: Registered udp transport module.
[ 4.710357][ T1] RPC: Registered tcp transport module.
[ 4.712726][ T1] RPC: Registered tcp-with-tls transport module.
[ 4.715354][ T1] RPC: Registered tcp NFSv4.1 backchannel transport module.
[ 4.723242][ T1] NET: Registered PF_XDP protocol family
[ 4.725886][ T1] pci_bus 0000:00: resource 4 [io 0x0000-0x0cf7 window]
[ 4.729065][ T1] pci_bus 0000:00: resource 5 [io 0x0d00-0xffff window]
[ 4.732168][ T1] pci_bus 0000:00: resource 6 [mem 0x000a0000-0x000bffff window]
[ 4.735960][ T1] pci_bus 0000:00: resource 7 [mem 0xc0000000-0xfebfefff window]
[ 4.740337][ T1] pci 0000:00:00.0: Limiting direct PCI/PCI transfers
[ 4.743700][ T1] PCI: CLS 0 bytes, default 64
[ 4.746067][ T1] PCI-DMA: Using software bounce buffering for IO (SWIOTLB)
[ 4.749579][ T1] software IO TLB: mapped [mem 0x00000000b4800000-0x00000000b8800000] (64MB)
[ 4.753482][ T1] ACPI: bus type thunderbolt registered
[ 4.759071][ T1] RAPL PMU: API unit is 2^-32 Joules, 0 fixed counters, 10737418240 ms ovfl timer
[ 4.771325][ T58] kworker/u8:3 (58) used greatest stack depth: 27960 bytes left
[ 4.793713][ T1] kvm_amd: CPU 0 isn't AMD or Hygon
[ 4.796287][ T1] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x1fb63109b96, max_idle_ns: 440795265316 ns
[ 4.801998][ T1] clocksource: Switched to clocksource tsc
[ 4.825015][ T78] kworker/u8:4 (78) used greatest stack depth: 27640 bytes left
[ 4.830863][ T1] Initialise system trusted keyrings
[ 4.837646][ T1] workingset: timestamp_bits=40 (anon: 36) max_order=21 bucket_order=0 (anon: 0)
[ 4.848901][ T1] DLM installed
[ 4.855014][ T1] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[ 4.864993][ T1] NFS: Registering the id_resolver key type
[ 4.869126][ T1] Key type id_resolver registered
[ 4.871099][ T1] Key type id_legacy registered
[ 4.873461][ T1] nfs4filelayout_init: NFSv4 File Layout Driver Registering...
[ 4.876869][ T1] nfs4flexfilelayout_init: NFSv4 Flexfile Layout Driver Registering...
[ 4.883326][ T1] smbdirect: subsystem loading...
[ 4.891038][ T1] smbdirect: subsystem loaded
[ 4.915389][ T1] Key type cifs.spnego registered
[ 4.918159][ T1] Key type cifs.idmap registered
[ 4.923761][ T1] ------------[ cut here ]------------
[ 4.925996][ T1] workqueue: ntfs-bg-io is using neither WQ_PERCPU or WQ_UNBOUND. Setting WQ_PERCPU.
[ 4.929879][ T1] WARNING: kernel/workqueue.c:5852 at __alloc_workqueue+0x1a11/0x1d70, CPU#0: swapper/0/1
[ 4.934084][ T1] Modules linked in:
[ 4.935787][ T1] CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT(full)
[ 4.939614][ T1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[ 4.943629][ T1] RIP: 0010:__alloc_workqueue+0x1a18/0x1d70
[ 4.946097][ T1] Code: ee ff ff e8 1a b3 36 00 e9 82 fc ff ff e8 10 b3 36 00 e9 1b fd ff ff e8 06 b3 36 00 48 8d 3d bf fb 13 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 b2 36 00
[ 4.954098][ T1] RSP: 0000:ffffc900000675c8 EFLAGS: 00010293
[ 4.956549][ T1] RAX: ffffffff818a5f8a RBX: 0000000000000000 RCX: ffff88801fa45c40
[ 4.959813][ T1] RDX: 0000000000000000 RSI: ffff88801b3b5570 RDI: ffffffff8f9e5b50
[ 4.962833][ T1] RBP: ffffffff8ba0a9c0 R08: ffff88801fa45c40 R09: 0000000000000002
[ 4.966046][ T1] R10: 0000000000000102 R11: 0000000000000000 R12: dffffc0000000000
[ 4.969307][ T1] R13: ffff88801b3b5400 R14: ffff88801b3b5400 R15: 0000000000000000
[ 4.972494][ T1] FS: 0000000000000000(0000) GS:ffff888125f01000(0000) knlGS:0000000000000000
[ 4.976025][ T1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4.978964][ T1] CR2: ffff88823ffff000 CR3: 000000000df3a000 CR4: 00000000003526f0
[ 4.982518][ T1] Call Trace:
[ 4.983868][ T1]
[ 4.985342][ T1] alloc_workqueue_noprof+0xe3/0x210
[ 4.987796][ T1] ? __pfx_alloc_workqueue_noprof+0x10/0x10
[ 4.990419][ T1] ? lock_release+0x4b/0x3b0
[ 4.992613][ T1] ? __pfx_init_ntfs_fs+0x10/0x10
[ 4.994999][ T1] init_ntfs_fs+0xc9/0x400
[ 4.997194][ T1] ? __pfx_init_ntfs_fs+0x10/0x10
[ 4.999615][ T1] ? do_raw_spin_lock+0x12b/0x2f0
[ 5.001726][ T1] ? rcu_is_watching+0x15/0xb0
[ 5.003936][ T1] ? do_raw_spin_lock+0x12b/0x2f0
[ 5.006326][ T1] ? rcu_is_watching+0x15/0xb0
[ 5.009160][ T1] ? rcu_is_watching+0x15/0xb0
[ 5.011166][ T1] ? rcu_is_watching+0x15/0xb0
[ 5.013168][ T1] ? trace_irq_enable+0x3b/0x130
[ 5.015275][ T1] ? _raw_spin_unlock_irqrestore+0x4c/0x80
[ 5.018055][ T1] ? add_device_randomness+0xcf/0x130
[ 5.020427][ T1] ? __pfx_add_device_randomness+0x10/0x10
[ 5.022786][ T1] ? __pfx_ksmbd_server_terminate_conn+0x10/0x10
[ 5.025227][ T1] ? register_filesystem+0x33a/0x360
[ 5.027170][ T1] do_one_initcall+0x250/0x7b0
[ 5.029343][ T1] ? __pfx_init_ntfs_fs+0x10/0x10
[ 5.031225][ T1] ? __pfx_do_one_initcall+0x10/0x10
[ 5.033407][ T1] ? ktime_get+0x1ee/0x210
[ 5.035139][ T1] ? __pfx___schedule+0x10/0x10
[ 5.037159][ T1] ? clockevents_program_event+0x48f/0x630
[ 5.039315][ T1] ? __pfx_clockevents_program_event+0x10/0x10
[ 5.041862][ T1] ? rcu_is_watching+0x15/0xb0
[ 5.043727][ T1] ? trace_irq_disable+0x3b/0x130
[ 5.045664][ T1] ? preempt_schedule_irq+0x66/0xa0
[ 5.047653][ T1] ? rcu_is_watching+0x15/0xb0
[ 5.049498][ T1] ? trace_irq_enable+0x3b/0x130
[ 5.051430][ T1] ? asm_sysvec_apic_timer_interrupt+0x1a/0x20
[ 5.054031][ T1] ? parse_args+0x315/0xbe0
[ 5.056112][ T1] ? __sanitizer_cov_trace_const_cmp1+0x8/0x90
[ 5.058762][ T1] ? parse_args+0xac5/0xbe0
[ 5.061062][ T1] ? __pfx_parse_args+0x10/0x10
[ 5.062970][ T1] ? rcu_is_watching+0x15/0xb0
[ 5.064778][ T1] do_initcall_level+0x10a/0x1a0
[ 5.066924][ T1] ? kernel_init+0x1d/0x1d0
[ 5.068660][ T1] do_initcalls+0x3e/0x70
[ 5.070945][ T1] kernel_init_freeable+0x29d/0x3e0
[ 5.073105][ T1] ? __pfx_kernel_init+0x10/0x10
[ 5.075038][ T1] kernel_init+0x1d/0x1d0
[ 5.076710][ T1] ? __pfx_kernel_init+0x10/0x10
[ 5.078676][ T1] ret_from_fork+0x510/0xb60
[ 5.080448][ T1] ? __pfx_ret_from_fork+0x10/0x10
[ 5.082441][ T1] ? __switch_to+0xc56/0x13f0
[ 5.084077][ T1] ? __pfx_kernel_init+0x10/0x10
[ 5.086064][ T1] ret_from_fork_asm+0x1a/0x30
[ 5.088427][ T1]
[ 5.090202][ T1] Kernel panic - not syncing: kernel: panic_on_warn set ...
[ 5.093599][ T1] CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT(full)
[ 5.097108][ T1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[ 5.098351][ T1] Call Trace:
[ 5.098351][ T1]
[ 5.098351][ T1] vpanic+0x56c/0xa60
[ 5.098351][ T1] ? __pfx__printk+0x10/0x10
[ 5.098351][ T1] ? __pfx_vpanic+0x10/0x10
[ 5.098351][ T1] ? is_bpf_text_address+0x292/0x2b0
[ 5.098351][ T1] ? is_bpf_text_address+0x26/0x2b0
[ 5.098351][ T1] panic+0xc5/0xd0
[ 5.098351][ T1] ? __pfx_panic+0x10/0x10
[ 5.098351][ T1] ? ret_from_fork_asm+0x1a/0x30
[ 5.098351][ T1] __warn+0x310/0x4c0
[ 5.098351][ T1] ? __alloc_workqueue+0x1a11/0x1d70
[ 5.098351][ T1] ? __alloc_workqueue+0x1a11/0x1d70
[ 5.098351][ T1] __report_bug+0x331/0x530
[ 5.098351][ T1] ? kernel_init+0x1d/0x1d0
[ 5.098351][ T1] ? ret_from_fork+0x510/0xb60
[ 5.098351][ T1] ? ret_from_fork_asm+0x1a/0x30
[ 5.098351][ T1] ? __alloc_workqueue+0x1a11/0x1d70
[ 5.098351][ T1] ? __pfx___report_bug+0x10/0x10
[ 5.098351][ T1] report_bug_entry+0x19a/0x290
[ 5.098351][ T1] ? __alloc_workqueue+0x1a18/0x1d70
[ 5.098351][ T1] ? __alloc_workqueue+0x1a1d/0x1d70
[ 5.098351][ T1] handle_bug+0x10c/0x230
[ 5.098351][ T1] exc_invalid_op+0x1a/0x50
[ 5.147867][ T1] asm_exc_invalid_op+0x1a/0x20
[ 5.147867][ T1] RIP: 0010:__alloc_workqueue+0x1a18/0x1d70
[ 5.147867][ T1] Code: ee ff ff e8 1a b3 36 00 e9 82 fc ff ff e8 10 b3 36 00 e9 1b fd ff ff e8 06 b3 36 00 48 8d 3d bf fb 13 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 b2 36 00
[ 5.147867][ T1] RSP: 0000:ffffc900000675c8 EFLAGS: 00010293
[ 5.147867][ T1] RAX: ffffffff818a5f8a RBX: 0000000000000000 RCX: ffff88801fa45c40
[ 5.147867][ T1] RDX: 0000000000000000 RSI: ffff88801b3b5570 RDI: ffffffff8f9e5b50
[ 5.147867][ T1] RBP: ffffffff8ba0a9c0 R08: ffff88801fa45c40 R09: 0000000000000002
[ 5.147867][ T1] R10: 0000000000000102 R11: 0000000000000000 R12: dffffc0000000000
[ 5.147867][ T1] R13: ffff88801b3b5400 R14: ffff88801b3b5400 R15: 0000000000000000
[ 5.147867][ T1] ? __alloc_workqueue+0x1a0a/0x1d70
[ 5.147867][ T1] ? __alloc_workqueue+0x1a0a/0x1d70
[ 5.147867][ T1] alloc_workqueue_noprof+0xe3/0x210
[ 5.147867][ T1] ? __pfx_alloc_workqueue_noprof+0x10/0x10
[ 5.147867][ T1] ? lock_release+0x4b/0x3b0
[ 5.147867][ T1] ? __pfx_init_ntfs_fs+0x10/0x10
[ 5.147867][ T1] init_ntfs_fs+0xc9/0x400
[ 5.147867][ T1] ? __pfx_init_ntfs_fs+0x10/0x10
[ 5.147867][ T1] ? do_raw_spin_lock+0x12b/0x2f0
[ 5.147867][ T1] ? rcu_is_watching+0x15/0xb0
[ 5.147867][ T1] ? do_raw_spin_lock+0x12b/0x2f0
[ 5.147867][ T1] ? rcu_is_watching+0x15/0xb0
[ 5.147867][ T1] ? rcu_is_watching+0x15/0xb0
[ 5.147867][ T1] ? rcu_is_watching+0x15/0xb0
[ 5.147867][ T1] ? trace_irq_enable+0x3b/0x130
[ 5.147867][ T1] ? _raw_spin_unlock_irqrestore+0x4c/0x80
[ 5.147867][ T1] ? add_device_randomness+0xcf/0x130
[ 5.147867][ T1] ? __pfx_add_device_randomness+0x10/0x10
[ 5.147867][ T1] ? __pfx_ksmbd_server_terminate_conn+0x10/0x10
[ 5.147867][ T1] ? register_filesystem+0x33a/0x360
[ 5.147867][ T1] do_one_initcall+0x250/0x7b0
[ 5.147867][ T1] ? __pfx_init_ntfs_fs+0x10/0x10
[ 5.147867][ T1] ? __pfx_do_one_initcall+0x10/0x10
[ 5.147867][ T1] ? ktime_get+0x1ee/0x210
[ 5.147867][ T1] ? __pfx___schedule+0x10/0x10
[ 5.147867][ T1] ? clockevents_program_event+0x48f/0x630
[ 5.147867][ T1] ? __pfx_clockevents_program_event+0x10/0x10
[ 5.147867][ T1] ? rcu_is_watching+0x15/0xb0
[ 5.147867][ T1] ? trace_irq_disable+0x3b/0x130
[ 5.147867][ T1] ? preempt_schedule_irq+0x66/0xa0
[ 5.147867][ T1] ? rcu_is_watching+0x15/0xb0
[ 5.147867][ T1] ? trace_irq_enable+0x3b/0x130
[ 5.147867][ T1] ? asm_sysvec_apic_timer_interrupt+0x1a/0x20
[ 5.147867][ T1] ? parse_args+0x315/0xbe0
[ 5.147867][ T1] ? __sanitizer_cov_trace_const_cmp1+0x8/0x90
[ 5.147867][ T1] ? parse_args+0xac5/0xbe0
[ 5.147867][ T1] ? __pfx_parse_args+0x10/0x10
[ 5.147867][ T1] ? rcu_is_watching+0x15/0xb0
[ 5.147867][ T1] do_initcall_level+0x10a/0x1a0
[ 5.147867][ T1] ? kernel_init+0x1d/0x1d0
[ 5.147867][ T1] do_initcalls+0x3e/0x70
[ 5.147867][ T1] kernel_init_freeable+0x29d/0x3e0
[ 5.147867][ T1] ? __pfx_kernel_init+0x10/0x10
[ 5.147867][ T1] kernel_init+0x1d/0x1d0
[ 5.147867][ T1] ? __pfx_kernel_init+0x10/0x10
[ 5.147867][ T1] ret_from_fork+0x510/0xb60
[ 5.147867][ T1] ? __pfx_ret_from_fork+0x10/0x10
[ 5.147867][ T1] ? __switch_to+0xc56/0x13f0
[ 5.147867][ T1] ? __pfx_kernel_init+0x10/0x10
[ 5.147867][ T1] ret_from_fork_asm+0x1a/0x30
[ 5.147867][ T1]
[ 5.147867][ T1] Kernel Offset: disabled
[ 5.147867][ 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-build657105986=/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 197909be84f
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=197909be84fb372381af6fab3a7be03a06f9f7d1 -X github.com/google/syzkaller/prog.gitRevisionDate=20260603-212752" ./sys/syz-sysgen | grep -q false || go install -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=197909be84fb372381af6fab3a7be03a06f9f7d1 -X github.com/google/syzkaller/prog.gitRevisionDate=20260603-212752" ./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=197909be84fb372381af6fab3a7be03a06f9f7d1 -X github.com/google/syzkaller/prog.gitRevisionDate=20260603-212752" -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=\"197909be84fb372381af6fab3a7be03a06f9f7d1\"
/usr/bin/ld: /tmp/ccXS6aK5.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