WARNING in apply_wqattrs_prepare
node 0: [mem 0x0000000100000000-0x0000000140000fff]
node 1: [mem 0x0000000140001000-0x000000023fffffff]
Initmem setup node 0 [mem 0x0000000000001000-0x0000000140000fff]
Initmem setup node 1 [mem 0x0000000140001000-0x000000023fffffff]
On node 0, zone DMA: 1 pages in unavailable ranges
On node 0, zone DMA: 97 pages in unavailable ranges
On node 0, zone Normal: 3 pages in unavailable ranges
setup_percpu: NR_CPUS:8 nr_cpumask_bits:2 nr_cpu_ids:2 nr_node_ids:2
percpu: Embedded 71 pages/cpu s251400 r8192 d31224 u1048576
kvm-guest: PV spinlocks enabled
PV qspinlock hash table entries: 256 (order: 0, 4096 bytes, linear)
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 \
Kernel command line: comedi.comedi_num_legacy_minors=4 panic_on_warn=1 BOOT_IMAGE=/boot/bzImage root=/dev/sda1 console=ttyS0
Unknown kernel command line parameters "nbds_max=32", will be passed to user space.
random: crng init done
printk: log buffer data + meta data: 262144 + 917504 = 1179648 bytes
software IO TLB: area num 2.
Fallback order for Node 0: 0 1
Fallback order for Node 1: 1 0
Built 2 zonelists, mobility grouping on. Total pages: 2097051
Policy zone: Normal
mem auto-init: stack:all(zero), heap alloc:on, heap free:off
stackdepot: allocating hash table via alloc_large_system_hash
stackdepot hash table entries: 1048576 (order: 12, 16777216 bytes, linear)
stackdepot: allocating space for 8192 stack pools via memblock
**********************************************************
** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE **
** **
** This system shows unhashed kernel memory addresses **
** via the console, logs, and other interfaces. This **
** might reduce the security of your system. **
** **
** If you see this message and you are not debugging **
** the kernel, report this immediately to your system **
** administrator! **
** **
** Use hash_pointers=always to force this mode off **
** **
** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE **
**********************************************************
SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=2
allocated 167772160 bytes of page_ext
Node 0, zone DMA: page owner found early allocated 0 pages
Node 0, zone DMA32: page owner found early allocated 21120 pages
Node 0, zone Normal: page owner found early allocated 130 pages
Node 1, zone Normal: page owner found early allocated 19847 pages
Kernel/User page tables isolation: enabled
Dynamic Preempt: full
------------[ cut here ]------------
overflows_flex_counter_type(typeof(*ctx), pwq_tbl, __count)
WARNING: kernel/workqueue.c:5373 at apply_wqattrs_prepare.isra.0+0xa0/0x230 kernel/workqueue.c:5373, CPU#0: swapper/0/0
Modules linked in:
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 02/12/2026
RIP: 0010:apply_wqattrs_prepare.isra.0+0xa0/0x230 kernel/workqueue.c:5373
Code: 38 d0 7c 08 84 d2 0f 85 59 01 00 00 8b 5b 1c bf 05 00 00 00 89 de e8 ff c5 38 00 83 fb 05 0f 87 22 01 00 00 e8 41 cb 38 00 90 <0f> 0b 90 48 c7 c0 10 33 f0 8d 48 ba 00 00 00 00 00 fc ff df 48 c1
RSP: 0000:ffffffff8e207c60 EFLAGS: 00010093
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff81ce59d1
RDX: ffffffff8e297600 RSI: ffffffff81ce59df RDI: ffffffff8e297600
RBP: 0000000000000001 R08: 0000000000000005 R09: 0000000000000005
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000002 R14: ffff88813fe549d0 R15: fffffbfff1be065d
FS: 0000000000000000(0000) GS:ffff8881245b4000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff88823ffff000 CR3: 000000000e396000 CR4: 00000000000000b0
Call Trace:
apply_workqueue_attrs_locked kernel/workqueue.c:5458 [inline]
alloc_and_link_pwqs kernel/workqueue.c:5615 [inline]
__alloc_workqueue+0xfcc/0x1770 kernel/workqueue.c:5833
alloc_workqueue_noprof+0xd2/0x200 kernel/workqueue.c:5883
workqueue_init_early+0xacb/0xc70 kernel/workqueue.c:7934
start_kernel+0x22c/0x480 init/main.c:1101
x86_64_start_reservations+0x24/0x30 arch/x86/kernel/head64.c:310
x86_64_start_kernel+0x12b/0x130 arch/x86/kernel/head64.c:291
common_startup_64+0x13e/0x148
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@10.128.1.225" "pwd"]: exit status 255Pseudo-terminal will not be allocated because stdin is not a terminal.
Warning: Permanently added '[us-central1-ssh-serialport.googleapis.com]:9600' (ECDSA) to the list of known hosts.
serialport: Connected to syzkaller.us-central1-c.ci-qemu-gce-upstream-auto-test-job-2 port 1 (session ID: 23ae8487c6e12ea489d8ce994980aafd6999f85c0ece698381cb412a88367a74, active connections: 1).
SeaBIOS (version 1.8.2-google)
Total RAM Size = 0x0000000200000000 = 8192 MiB
CPUs found: 2 Max CPUs supported: 2
SeaBIOS (version 1.8.2-google)
Machine UUID bed55a07-c37e-fdc7-c524-a159d122d59d
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 0x000f2690: 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) (gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44) #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] SMBIOS 2.4 present.
[ 0.000000][ T0] DMI: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
[ 0.000000][ T0] DMI: Memory slots populated: 1/1
[ 0.000000][ T0] Hypervisor detected: KVM
[ 0.000000][ T0] last_pfn = 0xbfffd max_arch_pfn = 0x400000000
[ 0.000000][ T0] kvm-clock: Using msrs 4b564d01 and 4b564d00
[ 0.000006][ T0] kvm-clock: using sched offset of 4905480716 cycles
[ 0.000967][ T0] clocksource: kvm-clock: mask: 0xffffffffffffffff max_cycles: 0x1cd42e4dffb, max_idle_ns: 881590591483 ns
[ 0.003897][ T0] tsc: Detected 2200.218 MHz processor
[ 0.010973][ T0] last_pfn = 0x240000 max_arch_pfn = 0x400000000
[ 0.011923][ T0] MTRR map: 4 entries (3 fixed + 1 variable; max 19), built from 8 variable MTRRs
[ 0.013136][ T0] x86/PAT: Configuration [0-7]: WB WC UC- UC WB WP UC- WT
[ 0.014425][ T0] last_pfn = 0xbfffd max_arch_pfn = 0x400000000
[ 0.022384][ T0] found SMP MP-table at [mem 0x000f2950-0x000f295f]
[ 0.023631][ T0] Using GB pages for direct mapping
[ 0.028080][ T0] ACPI: Early table checksum verification disabled
[ 0.029155][ T0] ACPI: RSDP 0x00000000000F26D0 000014 (v00 Google)
[ 0.030563][ T0] ACPI: RSDT 0x00000000BFFFFFA0 000038 (v01 Google GOOGRSDT 00000001 GOOG 00000001)
[ 0.032190][ T0] ACPI: FACP 0x00000000BFFFF330 0000F4 (v02 Google GOOGFACP 00000001 GOOG 00000001)
[ 0.033619][ T0] ACPI: DSDT 0x00000000BFFFD8C0 001A64 (v01 Google GOOGDSDT 00000001 GOOG 00000001)
[ 0.035372][ T0] ACPI: FACS 0x00000000BFFFD880 000040
[ 0.036433][ T0] ACPI: FACS 0x00000000BFFFD880 000040
[ 0.037705][ T0] ACPI: SRAT 0x00000000BFFFFE60 0000C8 (v03 Google GOOGSRAT 00000001 GOOG 00000001)
[ 0.039318][ T0] ACPI: APIC 0x00000000BFFFFDB0 000076 (v05 Google GOOGAPIC 00000001 GOOG 00000001)
[ 0.040985][ T0] ACPI: SSDT 0x00000000BFFFF430 000980 (v01 Google GOOGSSDT 00000001 GOOG 00000001)
[ 0.042269][ T0] ACPI: WAET 0x00000000BFFFFE30 000028 (v01 Google GOOGWAET 00000001 GOOG 00000001)
[ 0.043630][ T0] ACPI: Reserving FACP table memory at [mem 0xbffff330-0xbffff423]
[ 0.044961][ T0] ACPI: Reserving DSDT table memory at [mem 0xbfffd8c0-0xbffff323]
[ 0.046200][ T0] ACPI: Reserving FACS table memory at [mem 0xbfffd880-0xbfffd8bf]
[ 0.047512][ T0] ACPI: Reserving FACS table memory at [mem 0xbfffd880-0xbfffd8bf]
[ 0.048734][ T0] ACPI: Reserving SRAT table memory at [mem 0xbffffe60-0xbfffff27]
[ 0.050198][ T0] ACPI: Reserving APIC table memory at [mem 0xbffffdb0-0xbffffe25]
[ 0.051448][ T0] ACPI: Reserving SSDT table memory at [mem 0xbffff430-0xbffffdaf]
[ 0.052687][ T0] ACPI: Reserving WAET table memory at [mem 0xbffffe30-0xbffffe57]
[ 0.054273][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x00000000-0x0009ffff]
[ 0.055329][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x00100000-0xbfffffff]
[ 0.056391][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x100000000-0x23fffffff]
[ 0.057608][ T0] NUMA: Node 0 [mem 0x00001000-0x0009ffff] + [mem 0x00100000-0xbfffffff] -> [mem 0x00001000-0xbfffffff]
[ 0.059367][ T0] NUMA: Node 0 [mem 0x00001000-0xbfffffff] + [mem 0x100000000-0x23fffffff] -> [mem 0x00001000-0x23fffffff]
[ 0.061101][ T0] Faking node 0 at [mem 0x0000000000001000-0x0000000140000fff] (5120MB)
[ 0.062556][ T0] Faking node 1 at [mem 0x0000000140001000-0x000000023fffffff] (4095MB)
[ 0.064750][ T0] NODE_DATA(0) allocated [mem 0x13fffb400-0x140000fff]
[ 0.066835][ T0] NODE_DATA(1) allocated [mem 0x23fff7400-0x23fffcfff]
[ 0.387840][ T0] KernelAddressSanitizer initialized (generic)
[ 0.389410][ T0] ACPI: PM-Timer IO Port: 0xb008
[ 0.390430][ T0] ACPI: LAPIC_NMI (acpi_id[0xff] dfl dfl lint[0x1])
[ 0.391458][ T0] IOAPIC[0]: apic_id 0, version 17, address 0xfec00000, GSI 0-23
[ 0.392684][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 high level)
[ 0.393735][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
[ 0.394895][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 high level)
[ 0.395903][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 high level)
[ 0.397058][ T0] ACPI: Using ACPI (MADT) for SMP configuration information
[ 0.398045][ T0] CPU topo: Max. logical packages: 1
[ 0.398748][ T0] CPU topo: Max. logical dies: 1
[ 0.399545][ T0] CPU topo: Max. dies per package: 1
[ 0.400320][ T0] CPU topo: Max. threads per core: 2
[ 0.401121][ T0] CPU topo: Num. cores per package: 1
[ 0.401997][ T0] CPU topo: Num. threads per package: 2
[ 0.402839][ T0] CPU topo: Allowing 2 present CPUs plus 0 hotplug CPUs
[ 0.403886][ T0] PM: hibernation: Registered nosave memory: [mem 0x00000000-0x00000fff]
[ 0.404984][ T0] PM: hibernation: Registered nosave memory: [mem 0x0009f000-0x000fffff]
[ 0.406113][ T0] PM: hibernation: Registered nosave memory: [mem 0xbfffd000-0xffffffff]
[ 0.407267][ T0] [gap 0xc0000000-0xfffbbfff] available for PCI devices
[ 0.408158][ T0] Booting paravirtualized kernel on KVM
[ 0.408937][ T0] clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[ 0.531460][ T0] Zone ranges:
[ 0.532116][ T0] DMA [mem 0x0000000000001000-0x0000000000ffffff]
[ 0.533180][ T0] DMA32 [mem 0x0000000001000000-0x00000000ffffffff]
[ 0.534253][ T0] Normal [mem 0x0000000100000000-0x000000023fffffff]
[ 0.535208][ T0] Device empty
[ 0.535720][ T0] Movable zone start for each node
[ 0.536481][ T0] Early memory node ranges
[ 0.537381][ T0] node 0: [mem 0x0000000000001000-0x000000000009efff]
[ 0.538716][ T0] node 0: [mem 0x0000000000100000-0x00000000bfffcfff]
[ 0.539984][ T0] node 0: [mem 0x0000000100000000-0x0000000140000fff]
[ 0.541428][ T0] node 1: [mem 0x0000000140001000-0x000000023fffffff]
[ 0.542849][ T0] Initmem setup node 0 [mem 0x0000000000001000-0x0000000140000fff]
[ 0.544281][ T0] Initmem setup node 1 [mem 0x0000000140001000-0x000000023fffffff]
[ 0.545614][ T0] On node 0, zone DMA: 1 pages in unavailable ranges
[ 0.546885][ T0] On node 0, zone DMA: 97 pages in unavailable ranges
[ 0.616939][ T0] On node 0, zone Normal: 3 pages in unavailable ranges
[ 0.687850][ T0] setup_percpu: NR_CPUS:8 nr_cpumask_bits:2 nr_cpu_ids:2 nr_node_ids:2
[ 0.689938][ T0] percpu: Embedded 71 pages/cpu s251400 r8192 d31224 u1048576
[ 0.691145][ T0] kvm-guest: PV spinlocks enabled
[ 0.691803][ T0] PV qspinlock hash table entries: 256 (order: 0, 4096 bytes, linear)
[ 0.693064][ T0] Kernel command line: earlyprintk=serial net.ifnames=0 sysctl.kernel.hung_task_all_cpu_backtrace=1 ima_policy=tcb nf-conntrack-ftp.ports=20000 nf-conntrack-tftp.ports=20000 nf-conntrack-sip.ports=20000 nf-conntrack-irc.ports=20000 nf-conntrack-sane.ports=20000 binder.debug_mask=0 rcupdate.rcu_expedited=1 rcupdate.rcu_cpu_stall_cputime=1 no_hash_pointers page_owner=on sysctl.vm.nr_hugepages=4 sysctl.vm.nr_overcommit_hugepages=4 secretmem.enable=1 sysctl.max_rcu_stall_to_panic=1 msr.allow_writes=off coredump_filter=0xffff root=/dev/sda console=ttyS0 vsyscall=native numa=fake=2 kvm-intel.nested=1 spec_store_bypass_disable=prctl nopcid vivid.n_devs=64 vivid.multiplanar=1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2 netrom.nr_ndevs=32 rose.rose_ndevs=32 smp.csd_lock_timeout=100000 watchdog_thresh=55 workqueue.watchdog_thresh=140 sysctl.net.core.netdev_unregister_timeout_secs=140 dummy_hcd.num=32 max_loop=32 nbds_max=32 \
[ 0.706150][ T0] Kernel command line: comedi.comedi_num_legacy_minors=4 panic_on_warn=1 BOOT_IMAGE=/boot/bzImage root=/dev/sda1 console=ttyS0
[ 0.713757][ T0] Unknown kernel command line parameters "nbds_max=32", will be passed to user space.
[ 0.715448][ T0] random: crng init done
[ 0.716185][ T0] printk: log buffer data + meta data: 262144 + 917504 = 1179648 bytes
[ 0.717755][ T0] software IO TLB: area num 2.
[ 0.747494][ T0] Fallback order for Node 0: 0 1
[ 0.747518][ T0] Fallback order for Node 1: 1 0
[ 0.747533][ T0] Built 2 zonelists, mobility grouping on. Total pages: 2097051
[ 0.750405][ T0] Policy zone: Normal
[ 0.751838][ T0] mem auto-init: stack:all(zero), heap alloc:on, heap free:off
[ 0.752900][ T0] stackdepot: allocating hash table via alloc_large_system_hash
[ 0.753926][ T0] stackdepot hash table entries: 1048576 (order: 12, 16777216 bytes, linear)
[ 0.760300][ T0] stackdepot: allocating space for 8192 stack pools via memblock
[ 1.434570][ T0] **********************************************************
[ 1.436071][ T0] ** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE **
[ 1.437158][ T0] ** **
[ 1.438203][ T0] ** This system shows unhashed kernel memory addresses **
[ 1.439295][ T0] ** via the console, logs, and other interfaces. This **
[ 1.440354][ T0] ** might reduce the security of your system. **
[ 1.441456][ T0] ** **
[ 1.442514][ T0] ** If you see this message and you are not debugging **
[ 1.443515][ T0] ** the kernel, report this immediately to your system **
[ 1.444741][ T0] ** administrator! **
[ 1.445843][ T0] ** **
[ 1.446885][ T0] ** Use hash_pointers=always to force this mode off **
[ 1.447964][ T0] ** **
[ 1.449396][ T0] ** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE **
[ 1.451796][ T0] **********************************************************
[ 1.455838][ T0] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=2
[ 1.574190][ T0] allocated 167772160 bytes of page_ext
[ 1.575630][ T0] Node 0, zone DMA: page owner found early allocated 0 pages
[ 1.601419][ T0] Node 0, zone DMA32: page owner found early allocated 21120 pages
[ 1.618135][ T0] Node 0, zone Normal: page owner found early allocated 130 pages
[ 1.635513][ T0] Node 1, zone Normal: page owner found early allocated 19847 pages
[ 1.637620][ T0] Kernel/User page tables isolation: enabled
[ 1.639849][ T0] Dynamic Preempt: full
[ 1.641151][ T0] ------------[ cut here ]------------
[ 1.642294][ T0] overflows_flex_counter_type(typeof(*ctx), pwq_tbl, __count)
[ 1.642303][ T0] WARNING: kernel/workqueue.c:5373 at apply_wqattrs_prepare.isra.0+0xa0/0x230, CPU#0: swapper/0/0
[ 1.645159][ T0] Modules linked in:
[ 1.645828][ T0] CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT(full)
[ 1.647004][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
[ 1.648529][ T0] RIP: 0010:apply_wqattrs_prepare.isra.0+0xa0/0x230
[ 1.649453][ T0] Code: 38 d0 7c 08 84 d2 0f 85 59 01 00 00 8b 5b 1c bf 05 00 00 00 89 de e8 ff c5 38 00 83 fb 05 0f 87 22 01 00 00 e8 41 cb 38 00 90 <0f> 0b 90 48 c7 c0 10 33 f0 8d 48 ba 00 00 00 00 00 fc ff df 48 c1
[ 1.652273][ T0] RSP: 0000:ffffffff8e207c60 EFLAGS: 00010093
[ 1.653374][ T0] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff81ce59d1
[ 1.655191][ T0] RDX: ffffffff8e297600 RSI: ffffffff81ce59df RDI: ffffffff8e297600
[ 1.656322][ T0] RBP: 0000000000000001 R08: 0000000000000005 R09: 0000000000000005
[ 1.658002][ T0] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[ 1.659064][ T0] R13: 0000000000000002 R14: ffff88813fe549d0 R15: fffffbfff1be065d
[ 1.660152][ T0] FS: 0000000000000000(0000) GS:ffff8881245b4000(0000) knlGS:0000000000000000
[ 1.661309][ T0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1.662232][ T0] CR2: ffff88823ffff000 CR3: 000000000e396000 CR4: 00000000000000b0
[ 1.663277][ T0] Call Trace:
[ 1.663704][ T0]
[ 1.664099][ T0] __alloc_workqueue+0xfcc/0x1770
[ 1.664830][ T0] ? is_dynamic_key+0xc3/0x170
[ 1.665467][ T0] alloc_workqueue_noprof+0xd2/0x200
[ 1.666212][ T0] ? __pfx_alloc_workqueue_noprof+0x10/0x10
[ 1.667028][ T0] workqueue_init_early+0xacb/0xc70
[ 1.667803][ T0] ? __pfx_bh_pool_kick_highpri+0x10/0x10
[ 1.668776][ T0] ? __pfx_workqueue_init_early+0x10/0x10
[ 1.669877][ T0] ? __pfx_bh_pool_kick_normal+0x10/0x10
[ 1.670711][ T0] ? __pfx_bh_pool_kick_highpri+0x10/0x10
[ 1.671829][ T0] start_kernel+0x22c/0x480
[ 1.672624][ T0] x86_64_start_reservations+0x24/0x30
[ 1.673505][ T0] x86_64_start_kernel+0x12b/0x130
[ 1.674653][ T0] common_startup_64+0x13e/0x148
[ 1.675375][ T0]
[ 1.675889][ T0] Kernel panic - not syncing: kernel: panic_on_warn set ...
[ 1.676914][ T0] CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT(full)
[ 1.678189][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
[ 1.679630][ T0] Call Trace:
[ 1.680211][ T0]
[ 1.680719][ T0] dump_stack_lvl+0x100/0x190
[ 1.681483][ T0] vpanic+0x552/0x970
[ 1.682058][ T0] ? __pfx_vpanic+0x10/0x10
[ 1.682765][ T0] panic+0xd1/0xe0
[ 1.683361][ T0] ? __pfx_panic+0x10/0x10
[ 1.683947][ T0] ? check_panic_on_warn+0x1f/0x90
[ 1.684671][ T0] check_panic_on_warn.cold+0x19/0x34
[ 1.685377][ T0] ? apply_wqattrs_prepare.isra.0+0xa0/0x230
[ 1.686186][ T0] __warn.cold+0x191/0x348
[ 1.686767][ T0] __report_bug+0x296/0x3d0
[ 1.687376][ T0] ? apply_wqattrs_prepare.isra.0+0xa0/0x230
[ 1.688174][ T0] ? __pfx___report_bug+0x10/0x10
[ 1.688909][ T0] ? __mutex_unlock_slowpath+0x15c/0x790
[ 1.689767][ T0] ? __pfx___mutex_unlock_slowpath+0x10/0x10
[ 1.690628][ T0] ? pcpu_chunk_relocate+0x134/0x1a0
[ 1.691491][ T0] ? apply_wqattrs_prepare.isra.0+0xa0/0x230
[ 1.692443][ T0] report_bug+0xb2/0x220
[ 1.693062][ T0] ? apply_wqattrs_prepare.isra.0+0xa0/0x230
[ 1.694085][ T0] handle_bug+0x166/0x2a0
[ 1.694892][ T0] exc_invalid_op+0x17/0x50
[ 1.695640][ T0] asm_exc_invalid_op+0x1a/0x20
[ 1.696410][ T0] RIP: 0010:apply_wqattrs_prepare.isra.0+0xa0/0x230
[ 1.697350][ T0] Code: 38 d0 7c 08 84 d2 0f 85 59 01 00 00 8b 5b 1c bf 05 00 00 00 89 de e8 ff c5 38 00 83 fb 05 0f 87 22 01 00 00 e8 41 cb 38 00 90 <0f> 0b 90 48 c7 c0 10 33 f0 8d 48 ba 00 00 00 00 00 fc ff df 48 c1
[ 1.700897][ T0] RSP: 0000:ffffffff8e207c60 EFLAGS: 00010093
[ 1.702269][ T0] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff81ce59d1
[ 1.703319][ T0] RDX: ffffffff8e297600 RSI: ffffffff81ce59df RDI: ffffffff8e297600
[ 1.704923][ T0] RBP: 0000000000000001 R08: 0000000000000005 R09: 0000000000000005
[ 1.706413][ T0] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[ 1.708164][ T0] R13: 0000000000000002 R14: ffff88813fe549d0 R15: fffffbfff1be065d
[ 1.709776][ T0] ? apply_wqattrs_prepare.isra.0+0x91/0x230
[ 1.710749][ T0] ? apply_wqattrs_prepare.isra.0+0x9f/0x230
[ 1.711854][ T0] __alloc_workqueue+0xfcc/0x1770
[ 1.712830][ T0] ? is_dynamic_key+0xc3/0x170
[ 1.713601][ T0] alloc_workqueue_noprof+0xd2/0x200
[ 1.714553][ T0] ? __pfx_alloc_workqueue_noprof+0x10/0x10
[ 1.715437][ T0] workqueue_init_early+0xacb/0xc70
[ 1.716338][ T0] ? __pfx_bh_pool_kick_highpri+0x10/0x10
[ 1.717270][ T0] ? __pfx_workqueue_init_early+0x10/0x10
[ 1.718106][ T0] ? __pfx_bh_pool_kick_normal+0x10/0x10
[ 1.718870][ T0] ? __pfx_bh_pool_kick_highpri+0x10/0x10
[ 1.720132][ T0] start_kernel+0x22c/0x480
[ 1.720787][ T0] x86_64_start_reservations+0x24/0x30
[ 1.721520][ T0] x86_64_start_kernel+0x12b/0x130
[ 1.722607][ T0] common_startup_64+0x13e/0x148
[ 1.723499][ T0]
[ 1.724415][ T0] 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-build2128823185=/tmp/go-build -gno-record-gcc-switches'
GOHOSTARCH='amd64'
GOHOSTOS='linux'
GOINSECURE=''
GOMOD='/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/go.mod'
GOMODCACHE='/syzkaller/jobs/linux/gopath/pkg/mod'
GONOPROXY=''
GONOSUMDB=''
GOOS='linux'
GOPATH='/syzkaller/jobs/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='go1.24.4'
GOWORK=''
PKG_CONFIG='pkg-config'
git status (err=)
HEAD detached at 568559e4e60
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=568559e4e604140cecd9fc4835eaa0298a1cadcc -X 'github.com/google/syzkaller/prog.gitRevisionDate=20250201-125757'" -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=\"568559e4e604140cecd9fc4835eaa0298a1cadcc\"
/usr/bin/ld: /tmp/ccw4goX2.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