WARNING in __change_page_attr_set_clr
CPU topo: Max. threads per core: 2
CPU topo: Num. cores per package: 1
CPU topo: Num. threads per package: 2
CPU topo: Allowing 2 present CPUs plus 0 hotplug CPUs
PM: hibernation: Registered nosave memory: [mem 0x00000000-0x00000fff]
PM: hibernation: Registered nosave memory: [mem 0x0009f000-0x000fffff]
PM: hibernation: Registered nosave memory: [mem 0xbfffd000-0xffffffff]
[mem 0xc0000000-0xfffbbfff] available for PCI devices
Booting paravirtualized kernel on KVM
clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
setup_percpu: NR_CPUS:8 nr_cpumask_bits:2 nr_cpu_ids:2 nr_node_ids:2
percpu: Embedded 70 pages/cpu s246472 r8192 d32056 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 comedi.comedi
Unknown kernel command line parameters "spec_store_bypass_disable=prctl 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 21222 pages
Node 0, zone Normal: page owner found early allocated 0 pages
Node 1, zone Normal: page owner found early allocated 19843 pages
Kernel/User page tables isolation: enabled
------------[ cut here ]------------
WARNING: arch/x86/mm/pat/set_memory.c:308 at __cpa_addr arch/x86/mm/pat/set_memory.c:308 [inline], CPU#0: swapper/0
WARNING: arch/x86/mm/pat/set_memory.c:308 at __change_page_attr arch/x86/mm/pat/set_memory.c:1840 [inline], CPU#0: swapper/0
WARNING: arch/x86/mm/pat/set_memory.c:308 at __change_page_attr_set_clr+0x493/0x27d0 arch/x86/mm/pat/set_memory.c:2012, CPU#0: swapper/0
Modules linked in:
CPU: 0 UID: 0 PID: 0 Comm: swapper Not tainted syzkaller #0 PREEMPT(undef)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:__cpa_addr arch/x86/mm/pat/set_memory.c:308 [inline]
RIP: 0010:__change_page_attr arch/x86/mm/pat/set_memory.c:1840 [inline]
RIP: 0010:__change_page_attr_set_clr+0x493/0x27d0 arch/x86/mm/pat/set_memory.c:2012
Code: 89 f0 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 f7 e8 72 05 ae 00 49 c1 e7 0c 4d 03 3e 4d 89 fe e9 84 00 00 00 e8 4e 83 49 00 90 <0f> 0b 90 45 31 f6 eb 76 e8 40 83 49 00 48 8b 84 24 d0 00 00 00 42
RSP: 0000:ffffffff8e2079c0 EFLAGS: 00010093
RAX: ffffffff817689f2 RBX: ffffffff8e207da0 RCX: ffffffff8e2951c0
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffff8e207940
RBP: ffffffff8e207c70 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1c40f28 R12: dffffc0000000000
R13: ffffffff8e207d68 R14: ffffffff8e207d80 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8881257a7000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff88823ffff000 CR3: 000000000e338000 CR4: 00000000000000b0
Call Trace:
change_page_attr_set_clr+0x37f/0x1140 arch/x86/mm/pat/set_memory.c:2096
change_page_attr_clear arch/x86/mm/pat/set_memory.c:2133 [inline]
set_memory_nonglobal+0x8c/0xd0 arch/x86/mm/pat/set_memory.c:2365
pti_set_kernel_image_nonglobal arch/x86/mm/pti.c:614 [inline]
pti_init+0x7b/0xb0 arch/x86/mm/pti.c:652
mm_core_init+0x60/0x70 mm/mm_init.c:2725
start_kernel+0x16c/0x410 init/main.c:970
x86_64_start_reservations+0x24/0x30 arch/x86/kernel/head64.c:310
x86_64_start_kernel+0x143/0x1c0 arch/x86/kernel/head64.c:291
common_startup_64+0x13e/0x147
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@10.128.0.71" "pwd"]: exit status 255
ssh: connect to host 10.128.0.71 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 f4ecf68a-f2f0-66cc-6420-e966f85263fe
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 0x000f27f0: 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 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8) #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] usable
[ 0.000000][ T0] BIOS-e820: [mem 0x000000000009fc00-0x000000000009ffff] reserved
[ 0.000000][ T0] BIOS-e820: [mem 0x00000000000f0000-0x00000000000fffff] reserved
[ 0.000000][ T0] BIOS-e820: [mem 0x0000000000100000-0x00000000bfffcfff] usable
[ 0.000000][ T0] BIOS-e820: [mem 0x00000000bfffd000-0x00000000bfffffff] reserved
[ 0.000000][ T0] BIOS-e820: [mem 0x00000000fffbc000-0x00000000ffffffff] reserved
[ 0.000000][ T0] BIOS-e820: [mem 0x0000000100000000-0x000000023fffffff] usable
[ 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 08/18/2025
[ 0.000000][ T0] DMI: Memory slots populated: 1/1
[ 0.000000][ T0] Hypervisor detected: KVM
[ 0.000000][ T0] last_pfn = 0xbfffd max_arch_pfn = 0x400000000
[ 0.000000][ T0] kvm-clock: Using msrs 4b564d01 and 4b564d00
[ 0.000005][ T0] kvm-clock: using sched offset of 4765086005 cycles
[ 0.000924][ T0] clocksource: kvm-clock: mask: 0xffffffffffffffff max_cycles: 0x1cd42e4dffb, max_idle_ns: 881590591483 ns
[ 0.003890][ T0] tsc: Detected 2200.158 MHz processor
[ 0.008791][ T0] last_pfn = 0x240000 max_arch_pfn = 0x400000000
[ 0.010000][ T0] MTRR map: 4 entries (3 fixed + 1 variable; max 19), built from 8 variable MTRRs
[ 0.011520][ T0] x86/PAT: Configuration [0-7]: WB WC UC- UC WB WP UC- WT
[ 0.012708][ T0] last_pfn = 0xbfffd max_arch_pfn = 0x400000000
[ 0.019155][ T0] found SMP MP-table at [mem 0x000f2ab0-0x000f2abf]
[ 0.021210][ T0] Using GB pages for direct mapping
[ 0.025365][ T0] ACPI: Early table checksum verification disabled
[ 0.026719][ T0] ACPI: RSDP 0x00000000000F2830 000014 (v00 Google)
[ 0.028037][ T0] ACPI: RSDT 0x00000000BFFFFFA0 000038 (v01 Google GOOGRSDT 00000001 GOOG 00000001)
[ 0.030115][ T0] ACPI: FACP 0x00000000BFFFF330 0000F4 (v02 Google GOOGFACP 00000001 GOOG 00000001)
[ 0.031474][ T0] ACPI: DSDT 0x00000000BFFFD8C0 001A64 (v01 Google GOOGDSDT 00000001 GOOG 00000001)
[ 0.033068][ T0] ACPI: FACS 0x00000000BFFFD880 000040
[ 0.033806][ T0] ACPI: FACS 0x00000000BFFFD880 000040
[ 0.034705][ T0] ACPI: SRAT 0x00000000BFFFFE60 0000C8 (v03 Google GOOGSRAT 00000001 GOOG 00000001)
[ 0.036308][ T0] ACPI: APIC 0x00000000BFFFFDB0 000076 (v05 Google GOOGAPIC 00000001 GOOG 00000001)
[ 0.038950][ T0] ACPI: SSDT 0x00000000BFFFF430 000980 (v01 Google GOOGSSDT 00000001 GOOG 00000001)
[ 0.040838][ T0] ACPI: WAET 0x00000000BFFFFE30 000028 (v01 Google GOOGWAET 00000001 GOOG 00000001)
[ 0.042176][ T0] ACPI: Reserving FACP table memory at [mem 0xbffff330-0xbffff423]
[ 0.043243][ T0] ACPI: Reserving DSDT table memory at [mem 0xbfffd8c0-0xbffff323]
[ 0.044419][ T0] ACPI: Reserving FACS table memory at [mem 0xbfffd880-0xbfffd8bf]
[ 0.045514][ T0] ACPI: Reserving FACS table memory at [mem 0xbfffd880-0xbfffd8bf]
[ 0.046716][ T0] ACPI: Reserving SRAT table memory at [mem 0xbffffe60-0xbfffff27]
[ 0.048275][ T0] ACPI: Reserving APIC table memory at [mem 0xbffffdb0-0xbffffe25]
[ 0.049456][ T0] ACPI: Reserving SSDT table memory at [mem 0xbffff430-0xbffffdaf]
[ 0.050655][ T0] ACPI: Reserving WAET table memory at [mem 0xbffffe30-0xbffffe57]
[ 0.052035][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x00000000-0x0009ffff]
[ 0.053142][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x00100000-0xbfffffff]
[ 0.054057][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x100000000-0x23fffffff]
[ 0.055016][ T0] NUMA: Node 0 [mem 0x00001000-0x0009ffff] + [mem 0x00100000-0xbfffffff] -> [mem 0x00001000-0xbfffffff]
[ 0.056847][ T0] NUMA: Node 0 [mem 0x00001000-0xbfffffff] + [mem 0x100000000-0x23fffffff] -> [mem 0x00001000-0x23fffffff]
[ 0.058773][ T0] Faking node 0 at [mem 0x0000000000001000-0x0000000140000fff] (5120MB)
[ 0.059896][ T0] Faking node 1 at [mem 0x0000000140001000-0x000000023fffffff] (4095MB)
[ 0.061042][ T0] NODE_DATA(0) allocated [mem 0x13fffb400-0x140000fff]
[ 0.062859][ T0] NODE_DATA(1) allocated [mem 0x23fff7400-0x23fffcfff]
[ 0.104856][ T0] Zone ranges:
[ 0.105610][ T0] DMA [mem 0x0000000000001000-0x0000000000ffffff]
[ 0.106778][ T0] DMA32 [mem 0x0000000001000000-0x00000000ffffffff]
[ 0.107813][ T0] Normal [mem 0x0000000100000000-0x000000023fffffff]
[ 0.108855][ T0] Device empty
[ 0.109417][ T0] Movable zone start for each node
[ 0.110263][ T0] Early memory node ranges
[ 0.110963][ T0] node 0: [mem 0x0000000000001000-0x000000000009efff]
[ 0.111927][ T0] node 0: [mem 0x0000000000100000-0x00000000bfffcfff]
[ 0.112854][ T0] node 0: [mem 0x0000000100000000-0x0000000140000fff]
[ 0.114009][ T0] node 1: [mem 0x0000000140001000-0x000000023fffffff]
[ 0.115117][ T0] Initmem setup node 0 [mem 0x0000000000001000-0x0000000140000fff]
[ 0.116233][ T0] Initmem setup node 1 [mem 0x0000000140001000-0x000000023fffffff]
[ 0.117687][ T0] On node 0, zone DMA: 1 pages in unavailable ranges
[ 0.118945][ T0] On node 0, zone DMA: 97 pages in unavailable ranges
[ 0.191858][ T0] On node 0, zone Normal: 3 pages in unavailable ranges
[ 0.591055][ T0] KernelAddressSanitizer initialized (generic)
[ 0.592543][ T0] ACPI: PM-Timer IO Port: 0xb008
[ 0.593237][ T0] ACPI: LAPIC_NMI (acpi_id[0xff] dfl dfl lint[0x1])
[ 0.594216][ T0] IOAPIC[0]: apic_id 0, version 17, address 0xfec00000, GSI 0-23
[ 0.595248][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 high level)
[ 0.596231][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
[ 0.597251][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 high level)
[ 0.598341][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 high level)
[ 0.599361][ T0] ACPI: Using ACPI (MADT) for SMP configuration information
[ 0.600305][ T0] CPU topo: Max. logical packages: 1
[ 0.601019][ T0] CPU topo: Max. logical dies: 1
[ 0.601741][ T0] CPU topo: Max. dies per package: 1
[ 0.602451][ T0] CPU topo: Max. threads per core: 2
[ 0.603170][ T0] CPU topo: Num. cores per package: 1
[ 0.604190][ T0] CPU topo: Num. threads per package: 2
[ 0.605342][ T0] CPU topo: Allowing 2 present CPUs plus 0 hotplug CPUs
[ 0.607146][ T0] PM: hibernation: Registered nosave memory: [mem 0x00000000-0x00000fff]
[ 0.608518][ T0] PM: hibernation: Registered nosave memory: [mem 0x0009f000-0x000fffff]
[ 0.609600][ T0] PM: hibernation: Registered nosave memory: [mem 0xbfffd000-0xffffffff]
[ 0.610790][ T0] [mem 0xc0000000-0xfffbbfff] available for PCI devices
[ 0.611783][ T0] Booting paravirtualized kernel on KVM
[ 0.612589][ T0] clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[ 0.710223][ T0] setup_percpu: NR_CPUS:8 nr_cpumask_bits:2 nr_cpu_ids:2 nr_node_ids:2
[ 0.713115][ T0] percpu: Embedded 70 pages/cpu s246472 r8192 d32056 u1048576
[ 0.714761][ T0] kvm-guest: PV spinlocks enabled
[ 0.715870][ T0] PV qspinlock hash table entries: 256 (order: 0, 4096 bytes, linear)
[ 0.717508][ 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 comedi.comedi
[ 0.721851][ T0] Unknown kernel command line parameters "spec_store_bypass_disable=prctl nbds_max=32", will be passed to user space.
[ 0.740391][ T0] random: crng init done
[ 0.741353][ T0] printk: log buffer data + meta data: 262144 + 917504 = 1179648 bytes
[ 0.743154][ T0] software IO TLB: area num 2.
[ 0.774274][ T0] Fallback order for Node 0: 0 1
[ 0.774296][ T0] Fallback order for Node 1: 1 0
[ 0.774309][ T0] Built 2 zonelists, mobility grouping on. Total pages: 2097051
[ 0.777680][ T0] Policy zone: Normal
[ 0.778999][ T0] mem auto-init: stack:all(zero), heap alloc:on, heap free:off
[ 0.780853][ T0] stackdepot: allocating hash table via alloc_large_system_hash
[ 0.782531][ T0] stackdepot hash table entries: 1048576 (order: 12, 16777216 bytes, linear)
[ 0.789345][ T0] stackdepot: allocating space for 8192 stack pools via memblock
[ 1.500850][ T0] **********************************************************
[ 1.502043][ T0] ** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE **
[ 1.503166][ T0] ** **
[ 1.504232][ T0] ** This system shows unhashed kernel memory addresses **
[ 1.505248][ T0] ** via the console, logs, and other interfaces. This **
[ 1.506238][ T0] ** might reduce the security of your system. **
[ 1.507271][ T0] ** **
[ 1.508232][ T0] ** If you see this message and you are not debugging **
[ 1.509932][ T0] ** the kernel, report this immediately to your system **
[ 1.511161][ T0] ** administrator! **
[ 1.512178][ T0] ** **
[ 1.513153][ T0] ** Use hash_pointers=always to force this mode off **
[ 1.514361][ T0] ** **
[ 1.515322][ T0] ** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE **
[ 1.516374][ T0] **********************************************************
[ 1.519323][ T0] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=2
[ 1.641406][ T0] allocated 167772160 bytes of page_ext
[ 1.642504][ T0] Node 0, zone DMA: page owner found early allocated 0 pages
[ 1.658376][ T0] Node 0, zone DMA32: page owner found early allocated 21222 pages
[ 1.665126][ T0] Node 0, zone Normal: page owner found early allocated 0 pages
[ 1.677811][ T0] Node 1, zone Normal: page owner found early allocated 19843 pages
[ 1.680062][ T0] Kernel/User page tables isolation: enabled
[ 1.681474][ T0] ------------[ cut here ]------------
[ 1.682278][ T0] WARNING: arch/x86/mm/pat/set_memory.c:308 at __change_page_attr_set_clr+0x493/0x27d0, CPU#0: swapper/0
[ 1.685037][ T0] Modules linked in:
[ 1.685814][ T0] CPU: 0 UID: 0 PID: 0 Comm: swapper Not tainted syzkaller #0 PREEMPT(undef)
[ 1.687198][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
[ 1.688616][ T0] RIP: 0010:__change_page_attr_set_clr+0x493/0x27d0
[ 1.689528][ T0] Code: 89 f0 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 f7 e8 72 05 ae 00 49 c1 e7 0c 4d 03 3e 4d 89 fe e9 84 00 00 00 e8 4e 83 49 00 90 <0f> 0b 90 45 31 f6 eb 76 e8 40 83 49 00 48 8b 84 24 d0 00 00 00 42
[ 1.692899][ T0] RSP: 0000:ffffffff8e2079c0 EFLAGS: 00010093
[ 1.694082][ T0] RAX: ffffffff817689f2 RBX: ffffffff8e207da0 RCX: ffffffff8e2951c0
[ 1.695136][ T0] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffff8e207940
[ 1.696263][ T0] RBP: ffffffff8e207c70 R08: 0000000000000003 R09: 0000000000000004
[ 1.697533][ T0] R10: dffffc0000000000 R11: fffffbfff1c40f28 R12: dffffc0000000000
[ 1.698807][ T0] R13: ffffffff8e207d68 R14: ffffffff8e207d80 R15: 0000000000000000
[ 1.700400][ T0] FS: 0000000000000000(0000) GS:ffff8881257a7000(0000) knlGS:0000000000000000
[ 1.701650][ T0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1.702993][ T0] CR2: ffff88823ffff000 CR3: 000000000e338000 CR4: 00000000000000b0
[ 1.704598][ T0] Call Trace:
[ 1.705070][ T0]
[ 1.705835][ T0] ? rcu_is_watching+0x15/0xb0
[ 1.706667][ T0] ? _vm_unmap_aliases+0x747/0x7b0
[ 1.707668][ T0] ? _vm_unmap_aliases+0x1b2/0x7b0
[ 1.708569][ T0] ? __pfx___change_page_attr_set_clr+0x10/0x10
[ 1.709581][ T0] ? __pfx_get_page_from_freelist+0x10/0x10
[ 1.710500][ T0] ? 0xffffffff81000000
[ 1.711200][ T0] change_page_attr_set_clr+0x37f/0x1140
[ 1.712132][ T0] ? __alloc_frozen_pages_noprof+0x1d6/0x370
[ 1.713012][ T0] ? __pfx_change_page_attr_set_clr+0x10/0x10
[ 1.713991][ T0] ? __pfx___alloc_frozen_pages_noprof+0x10/0x10
[ 1.714991][ T0] ? pti_user_pagetable_walk_p4d+0x392/0x3c0
[ 1.716094][ T0] ? 0xffffffff81000000
[ 1.716884][ T0] set_memory_nonglobal+0x8c/0xd0
[ 1.717658][ T0] ? __pfx_set_memory_nonglobal+0x10/0x10
[ 1.719436][ T0] ? pti_user_pagetable_walk_pte+0x12c/0x1f0
[ 1.720219][ T0] ? 0xffffffff81000000
[ 1.720849][ T0] ? pti_clone_user_shared+0xe7/0x260
[ 1.721561][ T0] pti_init+0x7b/0xb0
[ 1.722159][ T0] mm_core_init+0x60/0x70
[ 1.722884][ T0] start_kernel+0x16c/0x410
[ 1.723747][ T0] x86_64_start_reservations+0x24/0x30
[ 1.724587][ T0] x86_64_start_kernel+0x143/0x1c0
[ 1.725381][ T0] common_startup_64+0x13e/0x147
[ 1.726093][ T0]
[ 1.726518][ T0] Kernel panic - not syncing: kernel: panic_on_warn set ...
[ 1.727483][ T0] CPU: 0 UID: 0 PID: 0 Comm: swapper Not tainted syzkaller #0 PREEMPT(undef)
[ 1.728683][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
[ 1.729972][ T0] Call Trace:
[ 1.730396][ T0]
[ 1.730934][ T0] dump_stack_lvl+0x99/0x250
[ 1.731550][ T0] ? __asan_memcpy+0x40/0x70
[ 1.732221][ T0] ? __pfx_dump_stack_lvl+0x10/0x10
[ 1.733092][ T0] ? __pfx__printk+0x10/0x10
[ 1.733749][ T0] vpanic+0x237/0x6d0
[ 1.734283][ T0] ? __pfx_vpanic+0x10/0x10
[ 1.734950][ T0] ? is_bpf_text_address+0x292/0x2b0
[ 1.735846][ T0] ? is_bpf_text_address+0x26/0x2b0
[ 1.736715][ T0] panic+0xb9/0xc0
[ 1.737552][ T0] ? __pfx_panic+0x10/0x10
[ 1.738251][ T0] ? common_startup_64+0x13e/0x147
[ 1.739224][ T0] __warn+0x334/0x4c0
[ 1.739919][ T0] ? __change_page_attr_set_clr+0x493/0x27d0
[ 1.740968][ T0] ? __change_page_attr_set_clr+0x493/0x27d0
[ 1.742023][ T0] report_bug+0x2be/0x4f0
[ 1.742881][ T0] ? __change_page_attr_set_clr+0x493/0x27d0
[ 1.743797][ T0] ? __change_page_attr_set_clr+0x493/0x27d0
[ 1.744810][ T0] ? __change_page_attr_set_clr+0x495/0x27d0
[ 1.745668][ T0] handle_bug+0x84/0x160
[ 1.746373][ T0] exc_invalid_op+0x1a/0x50
[ 1.747033][ T0] asm_exc_invalid_op+0x1a/0x20
[ 1.747839][ T0] RIP: 0010:__change_page_attr_set_clr+0x493/0x27d0
[ 1.748968][ T0] Code: 89 f0 48 c1 e8 0serialport: Connected to syzkaller.us-central1-c.ci-upstream-rust-kasan-gce-test-job-parallel-1 port 1 (session ID: 3978b10c74a07ae5fe60c93b7c11c75e17aef18e4a4f5fae07a6404b7404a6d6, active connections: 1).
3 42 80 3c 20 00 74 08 4c 89 f7 e8 72 05 ae 00 49 c1 e7 0c 4d 03 3e 4d 89 fe e9 84 00 00 00 e8 4e 83 49 00 90 <0f> 0b 90 45 31 f6 eb 76 e8 40 83 49 00 48 8b 84 24 d0 00 00 00 42
[ 1.751892][ T0] RSP: 0000:ffffffff8e2079c0 EFLAGS: 00010093
[ 1.753993][ T0] RAX: ffffffff817689f2 RBX: ffffffff8e207da0 RCX: ffffffff8e2951c0
[ 1.755939][ T0] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffff8e207940
[ 1.757076][ T0] RBP: ffffffff8e207c70 R08: 0000000000000003 R09: 0000000000000004
[ 1.758228][ T0] R10: dffffc0000000000 R11: fffffbfff1c40f28 R12: dffffc0000000000
[ 1.759282][ T0] R13: ffffffff8e207d68 R14: ffffffff8e207d80 R15: 0000000000000000
[ 1.761464][ T0] ? __change_page_attr_set_clr+0x492/0x27d0
[ 1.762846][ T0] ? rcu_is_watching+0x15/0xb0
[ 1.763703][ T0] ? _vm_unmap_aliases+0x747/0x7b0
[ 1.764626][ T0] ? _vm_unmap_aliases+0x1b2/0x7b0
[ 1.765487][ T0] ? __pfx___change_page_attr_set_clr+0x10/0x10
[ 1.766404][ T0] ? __pfx_get_page_from_freelist+0x10/0x10
[ 1.767363][ T0] ? 0xffffffff81000000
[ 1.767965][ T0] change_page_attr_set_clr+0x37f/0x1140
[ 1.769234][ T0] ? __alloc_frozen_pages_noprof+0x1d6/0x370
[ 1.770220][ T0] ? __pfx_change_page_attr_set_clr+0x10/0x10
[ 1.771366][ T0] ? __pfx___alloc_frozen_pages_noprof+0x10/0x10
[ 1.772390][ T0] ? pti_user_pagetable_walk_p4d+0x392/0x3c0
[ 1.773669][ T0] ? 0xffffffff81000000
[ 1.774543][ T0] set_memory_nonglobal+0x8c/0xd0
[ 1.775459][ T0] ? __pfx_set_memory_nonglobal+0x10/0x10
[ 1.776456][ T0] ? pti_user_pagetable_walk_pte+0x12c/0x1f0
[ 1.777710][ T0] ? 0xffffffff81000000
[ 1.778487][ T0] ? pti_clone_user_shared+0xe7/0x260
[ 1.779634][ T0] pti_init+0x7b/0xb0
[ 1.780784][ T0] mm_core_init+0x60/0x70
[ 1.781379][ T0] start_kernel+0x16c/0x410
[ 1.782159][ T0] x86_64_start_reservations+0x24/0x30
[ 1.782881][ T0] x86_64_start_kernel+0x143/0x1c0
[ 1.783781][ T0] common_startup_64+0x13e/0x147
[ 1.784601][ T0]
[ 1.785269][ 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-build4080916303=/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='go1.24.4'
GOWORK=''
PKG_CONFIG='pkg-config'
git status (err=)
HEAD detached at 96a211bca8b
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=96a211bca8bcc72de621f8990d476177d3463857 -X github.com/google/syzkaller/prog.gitRevisionDate=20250902-105110" ./sys/syz-sysgen | grep -q false || go install -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=96a211bca8bcc72de621f8990d476177d3463857 -X github.com/google/syzkaller/prog.gitRevisionDate=20250902-105110" ./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=96a211bca8bcc72de621f8990d476177d3463857 -X github.com/google/syzkaller/prog.gitRevisionDate=20250902-105110" -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=\"96a211bca8bcc72de621f8990d476177d3463857\"
/usr/bin/ld: /tmp/ccVWXFPq.o: in function `Connection::Connect(char const*, char const*)':
executor.cc:(.text._ZN10Connection7ConnectEPKcS1_[_ZN10Connection7ConnectEPKcS1_]+0x104): warning: Using 'gethostbyname' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking