WARNING in drm_mode_config_validate nfs4flexfilelayout_init: NFSv4 Flexfile Layout Driver Registering... smbdirect: subsystem loading... smbdirect: subsystem loaded Key type cifs.spnego registered Key type cifs.idmap registered jffs2: version 2.2. (NAND) (SUMMARY) © 2001-2006 Red Hat, Inc. romfs: ROMFS MTD (C) 2007 Red Hat, Inc. QNX4 filesystem 0.2.3 registered. qnx6: QNX6 filesystem 1.0.0 registered. fuse: init (API version 7.45) orangefs_debugfs_init: called with debug mask: :none: :0: orangefs_init: module version upstream loaded JFS: nTxBlock = 8192, nTxLock = 65536 SGI XFS with ACLs, security attributes, realtime, quota, no debug enabled 9p: Installing v9fs 9p2000 file system support NILFS version 2 loaded befs: version: 0.9.3 ocfs2: Registered cluster interface o2cb ocfs2: Registered cluster interface user OCFS2 User DLM kernel interface loaded gfs2: GFS2 installed ceph: loaded (mds proto 32) cryptd: max_cpu_qlen set to 1000 NET: Registered PF_ALG protocol family async_tx: api initialized (async) Key type asymmetric registered Asymmetric key parser 'x509' registered Asymmetric key parser 'pkcs8' registered Key type pkcs7_test registered Block layer SCSI generic (bsg) driver version 0.4 loaded (major 240) io scheduler mq-deadline registered io scheduler kyber registered io scheduler bfq registered input: Power Button as /devices/platform/LNXPWRBN:00/input/input0 ACPI: button: Power Button [PWRF] input: Sleep Button as /devices/platform/LNXSLPBN:00/input/input1 ACPI: button: Sleep Button [SLPF] ioatdma: Intel(R) QuickData Technology Driver 5.00 N_HDLC line discipline registered with maxframe=4096 Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled 00:02: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A 00:03: ttyS1 at I/O 0x2f8 (irq = 3, base_baud = 115200) is a 16550A 00:04: ttyS2 at I/O 0x3e8 (irq = 6, base_baud = 115200) is a 16550A 00:05: ttyS3 at I/O 0x2e8 (irq = 7, base_baud = 115200) is a 16550A Non-volatile memory driver v1.3 usbcore: registered new interface driver xillyusb ACPI: bus type drm_connector registered [drm] Initialized vgem 1.0.0 for vgem on minor 0 ------------[ cut here ]------------ [PLANE:35:plane-0] pixel format with alpha exposed but blend mode not setup WARNING: drivers/gpu/drm/drm_mode_config.c:873 at validate_blend_mode_for_alpha_formats drivers/gpu/drm/drm_mode_config.c:872 [inline], CPU#0: swapper/0/1 WARNING: drivers/gpu/drm/drm_mode_config.c:873 at drm_mode_config_validate+0x1c6a/0x1e60 drivers/gpu/drm/drm_mode_config.c:938, CPU#0: swapper/0/1 Modules linked in: CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 RIP: 0010:validate_blend_mode_for_alpha_formats drivers/gpu/drm/drm_mode_config.c:872 [inline] RIP: 0010:drm_mode_config_validate+0x1cab/0x1e60 drivers/gpu/drm/drm_mode_config.c:938 Code: 0f 85 ae 00 00 00 4d 8d 77 10 8b 6d 00 4c 89 f0 48 c1 e8 03 80 3c 18 00 74 08 4c 89 f7 e8 0d fd cc fc 49 8b 16 4c 89 ef 89 ee <67> 48 0f b9 3a eb 05 e8 a9 01 5f fc 49 bd 00 00 00 00 00 fc ff df RSP: 0000:ffffc90000067810 EFLAGS: 00010246 RAX: 1ffff11004beca08 RBX: dffffc0000000000 RCX: ffff88801caa5d00 RDX: ffff88801b354fe0 RSI: 0000000000000023 RDI: ffffffff8fee6cd0 RBP: 0000000000000023 R08: ffff88802365383b R09: 1ffff110046ca707 R10: dffffc0000000000 R11: ffffed10046ca708 R12: dffffc0000000000 R13: ffffffff8fee6cd0 R14: ffff888025f65040 R15: ffff888025f65030 FS: 0000000000000000(0000) GS:ffff8881257b1000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff88823ffff000 CR3: 000000000e33a000 CR4: 00000000003526f0 Call Trace: drm_dev_register+0x7c/0xd70 drivers/gpu/drm/drm_drv.c:1077 vkms_create+0x40d/0x4f0 drivers/gpu/drm/vkms/vkms_drv.c:208 vkms_init+0x57/0x80 drivers/gpu/drm/vkms/vkms_drv.c:240 do_one_initcall+0x250/0x860 init/main.c:1353 do_initcall_level+0x10a/0x1a0 init/main.c:1415 do_initcalls+0x59/0xa0 init/main.c:1431 kernel_init_freeable+0x29d/0x3e0 init/main.c:1666 kernel_init+0x22/0x1d0 init/main.c:1556 ret_from_fork+0x510/0xb60 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 ---------------- Code disassembly (best guess): 0: 0f 85 ae 00 00 00 jne 0xb4 6: 4d 8d 77 10 lea 0x10(%r15),%r14 a: 8b 6d 00 mov 0x0(%rbp),%ebp d: 4c 89 f0 mov %r14,%rax 10: 48 c1 e8 03 shr $0x3,%rax 14: 80 3c 18 00 cmpb $0x0,(%rax,%rbx,1) 18: 74 08 je 0x22 1a: 4c 89 f7 mov %r14,%rdi 1d: e8 0d fd cc fc call 0xfcccfd2f 22: 49 8b 16 mov (%r14),%rdx 25: 4c 89 ef mov %r13,%rdi 28: 89 ee mov %ebp,%esi * 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction 2f: eb 05 jmp 0x36 31: e8 a9 01 5f fc call 0xfc5f01df 36: 49 bd 00 00 00 00 00 movabs $0xdffffc0000000000,%r13 3d: fc ff df 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@10.128.1.131" "pwd"]: exit status 255 ssh: connect to host 10.128.1.131 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 4962b3aa-17c8-dbcd-e084-e7510138b069 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 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8) #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] 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 07/24/2026 [ 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 9651158354 cycles [ 0.002071][ T0] clocksource: kvm-clock: mask: 0xffffffffffffffff max_cycles: 0x1cd42e4dffb, max_idle_ns: 881590591483 ns [ 0.009701][ T0] tsc: Detected 2199.998 MHz processor [ 0.015828][ T0] last_pfn = 0x240000 max_arch_pfn = 0x400000000 [ 0.019566][ T0] MTRR map: 4 entries (3 fixed + 1 variable; max 19), built from 8 variable MTRRs [ 0.024219][ T0] x86/PAT: Configuration [0-7]: WB WC UC- UC WB WP UC- WT [ 0.027555][ T0] last_pfn = 0xbfffd max_arch_pfn = 0x400000000 [ 0.034760][ T0] found SMP MP-table at [mem 0x000f2890-0x000f289f] [ 0.037934][ T0] Using GB pages for direct mapping [ 0.043463][ T0] ACPI: Early table checksum verification disabled [ 0.048071][ T0] ACPI: RSDP 0x00000000000F2610 000014 (v00 Google) [ 0.052285][ T0] ACPI: RSDT 0x00000000BFFFFFB0 000038 (v01 Google GOOGRSDT 00000001 GOOG 00000001) [ 0.056290][ T0] ACPI: FACP 0x00000000BFFFF3B0 000114 (v06 Google GOOGFACP 00000001 GOOG 00000001) [ 0.060411][ T0] ACPI: DSDT 0x00000000BFFFD5C0 001DED (v02 Google GOOGDSDT 00000001 GOOG 00000001) [ 0.064026][ T0] ACPI: FACS 0x00000000BFFFD580 000040 [ 0.066482][ T0] ACPI: FACS 0x00000000BFFFD580 000040 [ 0.068991][ T0] ACPI: SRAT 0x00000000BFFFFEA0 0000C8 (v03 Google GOOGSRAT 00000001 GOOG 00000001) [ 0.072991][ T0] ACPI: APIC 0x00000000BFFFFDF0 000076 (v05 Google GOOGAPIC 00000001 GOOG 00000001) [ 0.077601][ T0] ACPI: SSDT 0x00000000BFFFF4D0 000914 (v02 Google GOOGSSDT 00000001 GOOG 00000001) [ 0.081726][ T0] ACPI: WAET 0x00000000BFFFFE70 000028 (v01 Google GOOGWAET 00000001 GOOG 00000001) [ 0.085352][ T0] ACPI: Reserving FACP table memory at [mem 0xbffff3b0-0xbffff4c3] [ 0.088994][ T0] ACPI: Reserving DSDT table memory at [mem 0xbfffd5c0-0xbffff3ac] [ 0.091862][ T0] ACPI: Reserving FACS table memory at [mem 0xbfffd580-0xbfffd5bf] [ 0.094526][ T0] ACPI: Reserving FACS table memory at [mem 0xbfffd580-0xbfffd5bf] [ 0.098257][ T0] ACPI: Reserving SRAT table memory at [mem 0xbffffea0-0xbfffff67] [ 0.100757][ T0] ACPI: Reserving APIC table memory at [mem 0xbffffdf0-0xbffffe65] [ 0.103411][ T0] ACPI: Reserving SSDT table memory at [mem 0xbffff4d0-0xbffffde3] [ 0.106961][ T0] ACPI: Reserving WAET table memory at [mem 0xbffffe70-0xbffffe97] [ 0.110657][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x00000000-0x0009ffff] [ 0.112998][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x00100000-0xbfffffff] [ 0.115890][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x100000000-0x23fffffff] [ 0.118598][ T0] NUMA: Node 0 [mem 0x00001000-0x0009ffff] + [mem 0x00100000-0xbfffffff] -> [mem 0x00001000-0xbfffffff] [ 0.122656][ T0] NUMA: Node 0 [mem 0x00001000-0xbfffffff] + [mem 0x100000000-0x23fffffff] -> [mem 0x00001000-0x23fffffff] [ 0.128796][ T0] Faking node 0 at [mem 0x0000000000001000-0x0000000140000fff] (5120MB) [ 0.131442][ T0] Faking node 1 at [mem 0x0000000140001000-0x000000023fffffff] (4095MB) [ 0.134078][ T0] NODE_DATA(0) allocated [mem 0x13fffb140-0x140000fff] [ 0.136828][ T0] NODE_DATA(1) allocated [mem 0x23fff7140-0x23fffcfff] [ 0.436749][ T0] KernelAddressSanitizer initialized (generic) [ 0.441554][ T0] ACPI: PM-Timer IO Port: 0xb008 [ 0.443100][ T0] ACPI: LAPIC_NMI (acpi_id[0xff] dfl dfl lint[0x1]) [ 0.448111][ T0] IOAPIC[0]: apic_id 0, version 17, address 0xfec00000, GSI 0-23 [ 0.451797][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 high level) [ 0.454801][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level) [ 0.457725][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 high level) [ 0.462150][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 high level) [ 0.465824][ T0] ACPI: Using ACPI (MADT) for SMP configuration information [ 0.468511][ T0] CPU topo: Max. logical packages: 1 [ 0.470940][ T0] CPU topo: Max. logical nodes: 1 [ 0.472851][ T0] CPU topo: Num. nodes per package: 1 [ 0.474875][ T0] CPU topo: Max. logical dies: 1 [ 0.477428][ T0] CPU topo: Max. dies per package: 1 [ 0.479545][ T0] CPU topo: Max. threads per core: 2 [ 0.481407][ T0] CPU topo: Num. cores per package: 1 [ 0.483412][ T0] CPU topo: Num. threads per package: 2 [ 0.485790][ T0] CPU topo: Allowing 2 present CPUs plus 0 hotplug CPUs [ 0.489384][ T0] PM: hibernation: Registered nosave memory: [mem 0x00000000-0x00000fff] [ 0.492706][ T0] PM: hibernation: Registered nosave memory: [mem 0x0009f000-0x000fffff] [ 0.495364][ T0] PM: hibernation: Registered nosave memory: [mem 0xbfffd000-0xffffffff] [ 0.498396][ T0] [gap 0xc0000000-0xfffbbfff] available for PCI devices [ 0.501148][ T0] Booting paravirtualized kernel on KVM [ 0.503441][ T0] clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns [ 0.612799][ T0] Zone ranges: [ 0.615273][ T0] DMA [mem 0x0000000000001000-0x0000000000ffffff] [ 0.620589][ T0] DMA32 [mem 0x0000000001000000-0x00000000ffffffff] [ 0.624177][ T0] Normal [mem 0x0000000100000000-0x000000023fffffff] [ 0.626907][ T0] Device empty [ 0.627984][ T0] Movable zone start for each node [ 0.629896][ T0] Early memory node ranges [ 0.631303][ T0] node 0: [mem 0x0000000000001000-0x000000000009efff] [ 0.634127][ T0] node 0: [mem 0x0000000000100000-0x00000000bfffcfff] [ 0.636638][ T0] node 0: [mem 0x0000000100000000-0x0000000140000fff] [ 0.639614][ T0] node 1: [mem 0x0000000140001000-0x000000023fffffff] [ 0.642033][ T0] Initmem setup node 0 [mem 0x0000000000001000-0x0000000140000fff] [ 0.645321][ T0] Initmem setup node 1 [mem 0x0000000140001000-0x000000023fffffff] [ 0.686124][ T0] On node 0, zone DMA: 1 pages in unavailable ranges [ 0.688818][ T0] On node 0, zone DMA: 97 pages in unavailable ranges [ 0.755293][ T0] On node 0, zone Normal: 3 pages in unavailable ranges [ 0.824313][ T0] setup_percpu: NR_CPUS:8 nr_cpumask_bits:2 nr_cpu_ids:2 nr_node_ids:2 [ 0.827922][ T0] percpu: Embedded 71 pages/cpu s251272 r8192 d31352 u1048576 [ 0.832039][ T0] kvm-guest: PV spinlocks enabled [ 0.834190][ T0] PV qspinlock hash table entries: 256 (order: 0, 4096 bytes, linear) [ 0.837264][ 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 \ [ 0.874097][ T0] Kernel command line: comedi.comedi_num_legacy_minors=4 panic_on_warn=1 BOOT_IMAGE=/boot/bzImage root=/dev/sda1 console=ttyS0 [ 0.883922][ T0] Unknown kernel command line parameters "nbds_max=32", will be passed to user space. [ 0.887287][ T0] random: crng init done [ 0.888440][ T0] printk: log buffer data + meta data: 262144 + 917504 = 1179648 bytes [ 0.891059][ T0] software IO TLB: area num 2. [ 0.919651][ T0] Fallback order for Node 0: 0 1 [ 0.919673][ T0] Fallback order for Node 1: 1 0 [ 0.919685][ T0] Built 2 zonelists, mobility grouping on. Total pages: 2097051 [ 0.927874][ T0] Policy zone: Normal [ 0.931097][ T0] mem auto-init: stack:all(zero), heap alloc:on, heap free:off [ 0.934964][ T0] stackdepot: allocating hash table via alloc_large_system_hash [ 0.938558][ T0] stackdepot hash table entries: 1048576 (order: 12, 16777216 bytes, linear) [ 0.946368][ T0] stackdepot: allocating space for 8192 stack pools via memblock [ 1.675155][ T0] ********************************************************** [ 1.678168][ T0] ** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE ** [ 1.680992][ T0] ** ** [ 1.683998][ T0] ** This system shows unhashed kernel memory addresses ** [ 1.686534][ T0] ** via the console, logs, and other interfaces. This ** [ 1.688857][ T0] ** might reduce the security of your system. ** [ 1.691397][ T0] ** ** [ 1.694350][ T0] ** If you see this message and you are not debugging ** [ 1.696820][ T0] ** the kernel, report this immediately to your system ** [ 1.699540][ T0] ** administrator! ** [ 1.702452][ T0] ** ** [ 1.705051][ T0] ** Use hash_pointers=always to force this mode off ** [ 1.709530][ T0] ** ** [ 1.712557][ T0] ** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE ** [ 1.714987][ T0] ********************************************************** [ 1.720213][ T0] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=2 [ 1.829473][ T0] allocated 167772160 bytes of page_ext [ 1.831754][ T0] Node 0, zone DMA: page owner found early allocated 0 pages [ 1.849052][ T0] Node 0, zone DMA32: page owner found early allocated 21120 pages [ 1.858259][ T0] Node 0, zone Normal: page owner found early allocated 131 pages [ 1.873513][ T0] Node 1, zone Normal: page owner found early allocated 19847 pages [ 1.876677][ T0] Kernel/User page tables isolation: enabled [ 1.879965][ T0] Dynamic Preempt: full [ 1.882438][ T0] Running RCU self tests [ 1.884492][ T0] Running RCU synchronous self tests [ 1.886259][ T0] rcu: Preemptible hierarchical RCU implementation. [ 1.888413][ T0] rcu: RCU lockdep checking is enabled. [ 1.890141][ T0] rcu: RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=2. [ 1.893068][ T0] rcu: RCU callback double-/use-after-free debug is enabled. [ 1.897367][ T0] rcu: RCU debug extended QS entry/exit. [ 1.900803][ T0] All grace periods are expedited (rcu_expedited). [ 1.903422][ T0] Trampoline variant of Tasks RCU enabled. [ 1.905839][ T0] Tracing variant of Tasks RCU enabled. [ 1.909056][ T0] rcu: RCU calculated value of scheduler-enlistment delay is 10 jiffies. [ 1.913578][ T0] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2 [ 1.916046][ T0] Running RCU synchronous self tests [ 1.918316][ T0] RCU Tasks: Setting shift to 1 and lim to 1 rcu_task_cb_adjust=1 rcu_task_cpu_ids=2. [ 2.100946][ T0] NR_IRQS: 4352, nr_irqs: 440, preallocated irqs: 16 [ 2.104289][ T0] rcu: srcu_init: Setting srcu_struct sizes based on contention. [ 2.106778][ T0] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns [ 2.111373][ T0] kfence: initialized - using 2097152 bytes for 255 objects at 0xffff88823be00000-0xffff88823c000000 [ 2.117650][ T0] Console: colour VGA+ 80x25 [ 2.119780][ T0] printk: legacy console [ttyS0] enabled [ 2.119780][ T0] printk: legacy console [ttyS0] enabled [ 2.123725][ T0] printk: legacy bootconsole [earlyser0] disabled [ 2.123725][ T0] printk: legacy bootconsole [earlyser0] disabled [ 2.128770][ T0] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar [ 2.131971][ T0] ... MAX_LOCKDEP_SUBCLASSES: 8 [ 2.134044][ T0] ... MAX_LOCK_DEPTH: 48 [ 2.135639][ T0] ... MAX_LOCKDEP_KEYS: 8192 [ 2.137512][ T0] ... CLASSHASH_SIZE: 4096 [ 2.139252][ T0] ... MAX_LOCKDEP_ENTRIES: 1048576 [ 2.141244][ T0] ... MAX_LOCKDEP_CHAINS: 1048576 [ 2.143121][ T0] ... CHAINHASH_SIZE: 524288 [ 2.145611][ T0] memory used by lock dependency info: 106625 kB [ 2.147732][ T0] memory used for stack traces: 8320 kB [ 2.149655][ T0] per task-struct memory footprint: 1920 bytes [ 2.152297][ T0] mempolicy: Enabling automatic NUMA balancing. Configure with numa_balancing= or the kernel.numa_balancing sysctl [ 2.156849][ T0] ACPI: Core revision 20260408 [ 2.160292][ T0] APIC: Switch to symmetric I/O mode setup [ 2.163517][ T0] x2apic enabled [ 2.175237][ T0] APIC: Switched APIC routing to: physical x2apic [ 2.189379][ T0] ..TIMER: vector=0x30 apic1=0 pin1=0 apic2=-1 pin2=-1 [ 2.192708][ T0] clocksource: tsc-early: mask: 0xffffffffffffffff max_cycles: 0x1fb63109b96, max_idle_ns: 440795265316 ns [ 2.198097][ T0] Calibrating delay loop (skipped) preset value.. 4399.99 BogoMIPS (lpj=21999980) [ 2.208803][ T0] Last level iTLB entries: 4KB 64, 2MB 8, 4MB 8 [ 2.210820][ T0] Last level dTLB entries: 4KB 64, 2MB 32, 4MB 32, 1GB 4 [ 2.213341][ T0] mitigations: Enabled attack vectors: user_kernel, user_user, guest_host, guest_guest, SMT mitigations: auto [ 2.218098][ T0] Speculative Store Bypass: Mitigation: Speculative Store Bypass disabled via prctl [ 2.221364][ T0] Spectre V2 : Mitigation: IBRS [ 2.222873][ T0] RETBleed: Mitigation: IBRS [ 2.224447][ T0] ITS: Mitigation: Aligned branch/return thunks [ 2.226758][ T0] Spectre V2 : User space: Mitigation: STIBP via prctl [ 2.228093][ T0] MDS: Mitigation: Clear CPU buffers [ 2.230082][ T0] TAA: Mitigation: Clear CPU buffers [ 2.231857][ T0] MMIO Stale Data: Vulnerable: Clear CPU buffers attempted, no microcode [ 2.234979][ T0] Spectre V1 : Mitigation: usercopy/swapgs barriers and __user pointer sanitization [ 2.238096][ T0] Spectre V2 : Spectre v2 / SpectreRSB: Filling RSB on context switch and VMEXIT [ 2.241476][ T0] Spectre V2 : Enabling IBPB for BPF [ 2.243558][ T0] Spectre V2 : mitigation: Enabling conditional Indirect Branch Prediction Barrier [ 2.248143][ T0] active return thunk: its_return_thunk [ 2.250072][ T0] Spectre V2 : Spectre BHI mitigation: SW BHB clearing on syscall and VM exit [ 2.253402][ T0] x86/fpu: Supporting XSAVE feature 0x001: 'x87 floating point registers' [ 2.258100][ T0] x86/fpu: Supporting XSAVE feature 0x002: 'SSE registers' [ 2.261003][ T0] x86/fpu: Supporting XSAVE feature 0x004: 'AVX registers' [ 2.263234][ T0] x86/fpu: xstate_offset[2]: 576, xstate_sizes[2]: 256 [ 2.265607][ T0] x86/fpu: Enabled xstate features 0x7, context size is 832 bytes, using 'standard' format. [ 2.702259][ T0] pid_max: default: 32768 minimum: 301 [ 2.706078][ T0] landlock: Up and running. [ 2.707581][ T0] Yama: becoming mindful. [ 2.708505][ T0] TOMOYO Linux initialized [ 2.711230][ T0] AppArmor: AppArmor initialized [ 2.716097][ T0] LSM support for eBPF active [ 2.718858][ T0] debugfs: Unable to create file 'net_refcnt@ffffffff9a2be680', debugfs is not initialized yet [ 2.723439][ T0] debugfs: Unable to create file 'net_notrefcnt@ffffffff9a2be6f8', debugfs is not initialized yet [ 2.734283][ T0] Dentry cache hash table entries: 1048576 (order: 11, 8388608 bytes, vmalloc hugepage) [ 2.741247][ T0] Inode-cache hash table entries: 524288 (order: 10, 4194304 bytes, vmalloc hugepage) [ 2.748636][ T0] Mount-cache hash table entries: 16384 (order: 5, 131072 bytes, vmalloc) [ 2.751698][ T0] Mountpoint-cache hash table entries: 16384 (order: 5, 131072 bytes, vmalloc) [ 2.758578][ T0] VFS: Finished mounting rootfs on nullfs [ 2.765901][ T0] Running RCU synchronous self tests [ 2.767856][ T0] Running RCU synchronous self tests [ 2.891317][ T1] smpboot: CPU0: Intel(R) Xeon(R) CPU @ 2.20GHz (family: 0x6, model: 0x4f, stepping: 0x0) [ 2.898080][ T1] Performance Events: unsupported CPU family 6 model 79 no PMU driver, software events only. [ 2.898272][ T1] signal: max sigframe size: 1776 [ 2.901469][ T1] rcu: Hierarchical SRCU implementation. [ 2.903512][ T1] rcu: Max phase no-delay instances is 1000. [ 2.909409][ T1] Timer migration: 1 hierarchy levels; 8 children per group; 0 crossnode level [ 2.993735][ T1] NMI watchdog: Perf NMI watchdog permanently disabled [ 2.997206][ T1] smp: Bringing up secondary CPUs ... [ 3.001111][ T1] smpboot: x86: Booting SMP configuration: [ 3.003924][ T1] .... node #0, CPUs: #1 [ 3.009184][ 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. [ 3.015481][ 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. [ 3.018490][ 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. [ 3.028368][ T1] smp: Brought up 2 nodes, 2 CPUs [ 3.030573][ T1] smpboot: Total of 2 processors activated (8799.99 BogoMIPS) [ 3.039832][ T1] Memory: 6468156K/8388204K available (172513K kernel code, 29002K rwdata, 40272K rodata, 26264K init, 119276K bss, 1730584K reserved, 0K cma-reserved) [ 3.048919][ T1] devtmpfs: initialized [ 3.053036][ T1] x86/mm: Memory block size: 128MB [ 3.125365][ T1] Running RCU synchronous self tests [ 3.128130][ T1] Running RCU synchronous self tests [ 3.130359][ T1] Running RCU Tasks wait API self tests [ 3.130849][ T1] Running RCU Tasks Trace wait API self tests [ 3.139301][ T1] posixtimers hash table entries: 1024 (order: 5, 73728 bytes, vmalloc) [ 3.142serialport: Connected to syzkaller.us-central1-f.ci2-linux-6-6-kasan-perf-test-job-parallel-0 port 1 (session ID: 8dc198f763ab664957fe970d89ed9f3a24930f03c29e830deababde3b4a303d6, active connections: 1). 409][ T1] futex hash table entries: 256 (32768 bytes on 2 NUMA nodes, total 64 KiB, linear). [ 3.147659][ T1] xor: automatically using best checksumming function avx [ 3.153146][ T1] PM: RTC time: 15:48:10, date: 2026-08-22 [ 3.165529][ T1] NET: Registered PF_NETLINK/PF_ROUTE protocol family [ 3.178281][ T10] Callback from call_rcu_tasks_trace() invoked. [ 3.180027][ T1] audit: initializing netlink subsys (disabled) [ 3.182754][ T29] audit: type=2000 audit(1787413690.145:1): state=initialized audit_enabled=0 res=1 [ 3.191141][ T1] thermal_sys: Registered thermal governor 'step_wise' [ 3.191165][ T1] thermal_sys: Registered thermal governor 'user_space' [ 3.193939][ T1] cpuidle: using governor menu [ 3.198205][ T1] NET: Registered PF_QIPCRTR protocol family [ 3.210253][ T1] dca service started, version 1.12.1 [ 3.212921][ T1] PCI: Using configuration type 1 for base access [ 3.229769][ T1] HugeTLB: registered 1.00 GiB page size, pre-allocated 0 pages [ 3.232781][ T1] HugeTLB: 16380 KiB vmemmap can be freed for a 1.00 GiB page [ 3.238170][ T1] HugeTLB: registered 2.00 MiB page size, pre-allocated 0 pages [ 3.241846][ T1] HugeTLB: 28 KiB vmemmap can be freed for a 2.00 MiB page [ 3.289574][ T1] raid6: using avx2x2 recovery algorithm [ 3.291933][ T1] raid6: skipped pq benchmark and selected avx2x4 [ 3.298918][ T1] ACPI: Added _OSI(Module Device) [ 3.300407][ T1] ACPI: Added _OSI(Processor Device) [ 3.302547][ T1] ACPI: Added _OSI(Processor Aggregator Device) [ 3.546954][ T1] ACPI: 2 ACPI AML tables successfully acquired and loaded [ 3.599328][ T1] ACPI: \_SB_: platform _OSC: OS support mask [000e7eee] [ 3.652250][ T1] ACPI: Interpreter enabled [ 3.655369][ T1] ACPI: PM: (supports S0 S3 S4 S5) [ 3.656987][ T1] ACPI: Using IOAPIC for interrupt routing [ 3.658688][ T1] PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug [ 3.662593][ T1] PCI: Ignoring E820 reservations for host bridge windows [ 3.678370][ T1] ACPI: Enabled 16 GPEs in block 00 to 0F [ 4.101330][ T1] ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-ff]) [ 4.105021][ T1] acpi PNP0A03:00: fail to add MMCONFIG information, can't access extended configuration space under this bridge [ 4.162917][ T1] PCI host bridge to bus 0000:00 [ 4.165099][ T1] pci_bus 0000:00: root bus resource [io 0x0000-0x0cf7 window] [ 4.167744][ T1] pci_bus 0000:00: root bus resource [io 0x0d00-0x0fff window] [ 4.168140][ T1] pci_bus 0000:00: root bus resource [io 0xc000-0xffff window] [ 4.171290][ T1] pci_bus 0000:00: root bus resource [io 0xa000-0xbfff window] [ 4.174788][ T1] pci_bus 0000:00: root bus resource [mem 0x000a0000-0x000bffff window] [ 4.178135][ T1] pci_bus 0000:00: root bus resource [mem 0xc0000000-0xfebfefff window] [ 4.181389][ T1] pci_bus 0000:00: root bus resource [bus 00-ff] [ 4.184614][ T1] pci 0000:00:00.0: [8086:1237] type 00 class 0x060000 conventional PCI endpoint [ 4.192695][ T1] pci 0000:00:01.0: [8086:7110] type 00 class 0x060100 conventional PCI endpoint [ 4.210030][ T1] pci 0000:00:01.3: [8086:7113] type 00 class 0x068000 conventional PCI endpoint [ 4.218662][ T1] pci 0000:00:01.3: quirk: [io 0xb000-0xb03f] claimed by PIIX4 ACPI [ 4.231121][ T1] pci 0000:00:03.0: [1af4:1004] type 00 class 0x000000 conventional PCI endpoint [ 4.241297][ T1] pci 0000:00:03.0: BAR 0 [io 0xc000-0xc03f] [ 4.244512][ T1] pci 0000:00:03.0: BAR 1 [mem 0xfe800000-0xfe80007f] [ 4.254304][ T1] pci 0000:00:04.0: [1af4:1000] type 00 class 0x020000 conventional PCI endpoint [ 4.262291][ T1] pci 0000:00:04.0: BAR 0 [io 0xc040-0xc07f] [ 4.264553][ T1] pci 0000:00:04.0: BAR 1 [mem 0xfe801000-0xfe80107f] [ 4.279067][ T1] pci 0000:00:05.0: [1ae0:a002] type 00 class 0x030000 conventional PCI endpoint [ 4.292178][ T1] pci 0000:00:05.0: BAR 0 [mem 0xfe000000-0xfe7fffff] [ 4.295659][ T1] pci 0000:00:05.0: Video device with shadowed ROM at [mem 0x000c0000-0x000dffff] [ 4.309000][ T1] pci 0000:00:06.0: [1af4:1002] type 00 class 0x00ff00 conventional PCI endpoint [ 4.318156][ T1] pci 0000:00:06.0: BAR 0 [io 0xc080-0xc09f] [ 4.329605][ T1] pci 0000:00:07.0: [1af4:1005] type 00 class 0x00ff00 conventional PCI endpoint [ 4.338156][ T1] pci 0000:00:07.0: BAR 0 [io 0xc0a0-0xc0bf] [ 4.341042][ T1] pci 0000:00:07.0: BAR 1 [mem 0xfe802000-0xfe80203f] [ 4.405784][ T1] ACPI: PCI: Interrupt link LNKA configured for IRQ 10 [ 4.418673][ T1] ACPI: PCI: Interrupt link LNKB configured for IRQ 10 [ 4.431548][ T1] ACPI: PCI: Interrupt link LNKC configured for IRQ 11 [ 4.445163][ T1] ACPI: PCI: Interrupt link LNKD configured for IRQ 11 [ 4.454716][ T1] ACPI: PCI: Interrupt link LNKS configured for IRQ 9 [ 4.488733][ T1] iommu: Default domain type: Translated [ 4.491538][ T1] iommu: DMA domain TLB invalidation policy: lazy mode [ 4.504033][ T1] SCSI subsystem initialized [ 4.510010][ T1] ACPI: bus type USB registered [ 4.514257][ T1] usbcore: registered new interface driver usbfs [ 4.517233][ T1] usbcore: registered new interface driver hub [ 4.518617][ T1] usbcore: registered new device driver usb [ 4.525331][ T1] mc: Linux media interface: v0.10 [ 4.528615][ T1] videodev: Linux video capture interface: v2.00 [ 4.534360][ T1] pps_core: LinuxPPS API ver. 1 registered [ 4.538110][ T1] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti [ 4.543772][ T1] PTP clock support registered [ 4.558595][ T1] EDAC MC: Ver: 3.0.0 [ 4.573879][ T1] Advanced Linux Sound Architecture Driver Initialized. [ 4.589109][ T1] Bluetooth: Core ver 2.22 [ 4.591944][ T1] NET: Registered PF_BLUETOOTH protocol family [ 4.594659][ T1] Bluetooth: HCI device and connection manager initialized [ 4.598285][ T1] Bluetooth: HCI socket layer initialized [ 4.602086][ T1] Bluetooth: L2CAP socket layer initialized [ 4.604837][ T1] Bluetooth: SCO socket layer initialized [ 4.607037][ T1] NET: Registered PF_ATMPVC protocol family [ 4.608600][ T1] NetLabel: Initializing [ 4.610911][ T1] NetLabel: domain hash size = 128 [ 4.613201][ T1] NetLabel: protocols = UNLABELED CIPSOv4 CALIPSO [ 4.616533][ T1] NetLabel: unlabeled traffic allowed by default [ 4.621949][ T1] nfc: nfc_init: NFC Core ver 0.1 [ 4.624719][ T1] NET: Registered PF_NFC protocol family [ 4.628483][ T1] PCI: Using ACPI for IRQ routing [ 4.631041][ T1] e820: register RAM buffer resource [mem 0x0009fc00-0x0009ffff] [ 4.635489][ T1] e820: register RAM buffer resource [mem 0xbfffd000-0xbfffffff] [ 4.639354][ T1] pci 0000:00:05.0: vgaarb: setting as boot VGA device [ 4.642678][ T1] pci 0000:00:05.0: vgaarb: bridge control possible [ 4.645855][ T1] pci 0000:00:05.0: vgaarb: VGA device added: decodes=io+mem,owns=io+mem,locks=none [ 4.648116][ T1] vgaarb: loaded [ 4.661890][ T1] clocksource: Switched to clocksource kvm-clock [ 4.671893][ T1] VFS: Disk quotas dquot_6.6.0 [ 4.674020][ T1] VFS: Dquot-cache hash table entries: 512 (4096 bytes) [ 4.687058][ T1] netfs: FS-Cache loaded [ 4.690960][ T1] CacheFiles: Loaded [ 4.693972][ T1] TOMOYO: 2.6.0 [ 4.695056][ T1] Mandatory Access Control activated. [ 4.704685][ T1] AppArmor: AppArmor Filesystem Enabled [ 4.708014][ T1] pnp: PnP ACPI init [ 4.767563][ T1] pnp: PnP ACPI: found 6 devices [ 4.860484][ T1] clocksource: acpi_pm: mask: 0xffffff max_cycles: 0xffffff, max_idle_ns: 2085701024 ns [ 4.866990][ T1] NET: Registered PF_INET protocol family [ 4.872458][ T1] IP idents hash table entries: 131072 (order: 8, 1048576 bytes, vmalloc) [ 4.894132][ T1] tcp_listen_portaddr_hash hash table entries: 4096 (order: 7, 294912 bytes, vmalloc) [ 4.898420][ T1] Table-perturb hash table entries: 65536 (order: 6, 262144 bytes, vmalloc) [ 4.902444][ T1] TCP established hash table entries: 65536 (order: 7, 524288 bytes, vmalloc) [ 4.916772][ T1] TCP bind hash table entries: 65536 (order: 12, 9437184 bytes, vmalloc hugepage) [ 4.926523][ T1] TCP: Hash tables configured (established 65536 bind 65536) [ 4.932919][ T1] MPTCP token hash table entries: 8192 (order: 8, 720896 bytes, vmalloc) [ 4.937961][ T1] UDP hash table entries: 4096 (order: 8, 1048576 bytes, vmalloc) [ 4.943045][ T1] NET: Registered PF_UNIX/PF_LOCAL protocol family [ 4.953013][ T1] RPC: Registered named UNIX socket transport module. [ 4.956322][ T1] RPC: Registered udp transport module. [ 4.958904][ T1] RPC: Registered tcp transport module. [ 4.960932][ T1] RPC: Registered tcp-with-tls transport module. [ 4.963730][ T1] RPC: Registered tcp NFSv4.1 backchannel transport module. [ 4.972988][ T1] NET: Registered PF_XDP protocol family [ 4.977227][ T1] pci_bus 0000:00: resource 4 [io 0x0000-0x0cf7 window] [ 4.980390][ T1] pci_bus 0000:00: resource 5 [io 0x0d00-0x0fff window] [ 4.983486][ T1] pci_bus 0000:00: resource 6 [io 0xc000-0xffff window] [ 4.986590][ T1] pci_bus 0000:00: resource 7 [io 0xa000-0xbfff window] [ 4.990087][ T1] pci_bus 0000:00: resource 8 [mem 0x000a0000-0x000bffff window] [ 4.993639][ T1] pci_bus 0000:00: resource 9 [mem 0xc0000000-0xfebfefff window] [ 4.999607][ T1] pci 0000:00:00.0: Limiting direct PCI/PCI transfers [ 5.003568][ T1] PCI: CLS 0 bytes, default 64 [ 5.006685][ T1] PCI-DMA: Using software bounce buffering for IO (SWIOTLB) [ 5.009822][ T1] software IO TLB: mapped [mem 0x00000000b4600000-0x00000000b8600000] (64MB) [ 5.015400][ T1] ACPI: bus type thunderbolt registered [ 5.030414][ T1] RAPL PMU: API unit is 2^-32 Joules, 0 fixed counters, 10737418240 ms ovfl timer [ 5.037806][ T60] kworker/u8:3 (60) used greatest stack depth: 27696 bytes left [ 5.073217][ T1] kvm_amd: CPU 1 isn't AMD or Hygon [ 5.075766][ T1] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x1fb63109b96, max_idle_ns: 440795265316 ns [ 5.080524][ T1] clocksource: Switched to clocksource tsc [ 5.090446][ T65] kworker/u8:5 (65) used greatest stack depth: 27400 bytes left [ 5.130652][ T1] Initialise system trusted keyrings [ 5.138113][ T1] workingset: timestamp_bits=40 (anon: 35) max_order=21 bucket_order=0 (anon: 0) [ 5.154788][ T1] DLM installed [ 5.163697][ T1] squashfs: version 4.0 (2009/01/31) Phillip Lougher [ 5.178512][ T1] NFS: Registering the id_resolver key type [ 5.181797][ T1] Key type id_resolver registered [ 5.184409][ T1] Key type id_legacy registered [ 5.187043][ T1] nfs4filelayout_init: NFSv4 File Layout Driver Registering... [ 5.190442][ T1] nfs4flexfilelayout_init: NFSv4 Flexfile Layout Driver Registering... [ 5.200246][ T1] smbdirect: subsystem loading... [ 5.213257][ T1] smbdirect: subsystem loaded [ 5.243061][ T1] Key type cifs.spnego registered [ 5.245635][ T1] Key type cifs.idmap registered [ 5.253187][ T1] jffs2: version 2.2. (NAND) (SUMMARY) © 2001-2006 Red Hat, Inc. [ 5.259235][ T1] romfs: ROMFS MTD (C) 2007 Red Hat, Inc. [ 5.263156][ T1] QNX4 filesystem 0.2.3 registered. [ 5.265467][ T1] qnx6: QNX6 filesystem 1.0.0 registered. [ 5.270320][ T1] fuse: init (API version 7.45) [ 5.279564][ T1] orangefs_debugfs_init: called with debug mask: :none: :0: [ 5.285064][ T1] orangefs_init: module version upstream loaded [ 5.288680][ T1] JFS: nTxBlock = 8192, nTxLock = 65536 [ 5.305741][ T1] SGI XFS with ACLs, security attributes, realtime, quota, no debug enabled [ 5.327777][ T1] 9p: Installing v9fs 9p2000 file system support [ 5.331643][ T1] NILFS version 2 loaded [ 5.333261][ T1] befs: version: 0.9.3 [ 5.336128][ T1] ocfs2: Registered cluster interface o2cb [ 5.340583][ T1] ocfs2: Registered cluster interface user [ 5.344405][ T1] OCFS2 User DLM kernel interface loaded [ 5.376888][ T1] gfs2: GFS2 installed [ 5.399086][ T1] ceph: loaded (mds proto 32) [ 5.425201][ T1] cryptd: max_cpu_qlen set to 1000 [ 5.464084][ T1] NET: Registered PF_ALG protocol family [ 5.466689][ T1] async_tx: api initialized (async) [ 5.468348][ T1] Key type asymmetric registered [ 5.470356][ T1] Asymmetric key parser 'x509' registered [ 5.472714][ T1] Asymmetric key parser 'pkcs8' registered [ 5.475234][ T1] Key type pkcs7_test registered [ 5.477661][ T1] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 240) [ 5.482824][ T1] io scheduler mq-deadline registered [ 5.484852][ T1] io scheduler kyber registered [ 5.487421][ T1] io scheduler bfq registered [ 5.504789][ T1] input: Power Button as /devices/platform/LNXPWRBN:00/input/input0 [ 5.513579][ T1] ACPI: button: Power Button [PWRF] [ 5.518864][ T1] input: Sleep Button as /devices/platform/LNXSLPBN:00/input/input1 [ 5.525778][ T1] ACPI: button: Sleep Button [SLPF] [ 5.556645][ T1] ioatdma: Intel(R) QuickData Technology Driver 5.00 [ 5.599099][ T10] ACPI: \_SB_.LNKC: Enabled at IRQ 11 [ 5.604654][ T10] virtio-pci 0000:00:03.0: virtio_pci: leaving for legacy driver [ 5.651018][ T10] ACPI: \_SB_.LNKD: Enabled at IRQ 10 [ 5.661850][ T10] virtio-pci 0000:00:04.0: virtio_pci: leaving for legacy driver [ 5.718911][ T10] ACPI: \_SB_.LNKB: Enabled at IRQ 10 [ 5.721208][ T10] virtio-pci 0000:00:06.0: virtio_pci: leaving for legacy driver [ 5.768347][ T10] virtio-pci 0000:00:07.0: virtio_pci: leaving for legacy driver [ 5.887537][ T248] kworker/u8:4 (248) used greatest stack depth: 26984 bytes left [ 6.700869][ T1] N_HDLC line discipline registered with maxframe=4096 [ 6.710642][ T1] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled [ 6.733349][ T1] 00:02: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A [ 6.766428][ T1] 00:03: ttyS1 at I/O 0x2f8 (irq = 3, base_baud = 115200) is a 16550A [ 6.796985][ T1] 00:04: ttyS2 at I/O 0x3e8 (irq = 6, base_baud = 115200) is a 16550A [ 6.825331][ T1] 00:05: ttyS3 at I/O 0x2e8 (irq = 7, base_baud = 115200) is a 16550A [ 6.867875][ T1] Non-volatile memory driver v1.3 [ 6.909900][ T1] usbcore: registered new interface driver xillyusb [ 6.932496][ T1] ACPI: bus type drm_connector registered [ 6.952329][ T1] [drm] Initialized vgem 1.0.0 for vgem on minor 0 [ 6.966849][ T1] ------------[ cut here ]------------ [ 6.973100][ T1] [PLANE:35:plane-0] pixel format with alpha exposed but blend mode not setup [ 6.973136][ T1] WARNING: drivers/gpu/drm/drm_mode_config.c:873 at drm_mode_config_validate+0x1c6a/0x1e60, CPU#0: swapper/0/1 [ 6.995784][ T1] Modules linked in: [ 7.000177][ T1] CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT(full) [ 7.010206][ T1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 7.021867][ T1] RIP: 0010:drm_mode_config_validate+0x1cab/0x1e60 [ 7.028457][ T1] Code: 0f 85 ae 00 00 00 4d 8d 77 10 8b 6d 00 4c 89 f0 48 c1 e8 03 80 3c 18 00 74 08 4c 89 f7 e8 0d fd cc fc 49 8b 16 4c 89 ef 89 ee <67> 48 0f b9 3a eb 05 e8 a9 01 5f fc 49 bd 00 00 00 00 00 fc ff df [ 7.048956][ T1] RSP: 0000:ffffc90000067810 EFLAGS: 00010246 [ 7.055586][ T1] RAX: 1ffff11004beca08 RBX: dffffc0000000000 RCX: ffff88801caa5d00 [ 7.063641][ T1] RDX: ffff88801b354fe0 RSI: 0000000000000023 RDI: ffffffff8fee6cd0 [ 7.071844][ T1] RBP: 0000000000000023 R08: ffff88802365383b R09: 1ffff110046ca707 [ 7.080248][ T1] R10: dffffc0000000000 R11: ffffed10046ca708 R12: dffffc0000000000 [ 7.088792][ T1] R13: ffffffff8fee6cd0 R14: ffff888025f65040 R15: ffff888025f65030 [ 7.096865][ T1] FS: 0000000000000000(0000) GS:ffff8881257b1000(0000) knlGS:0000000000000000 [ 7.105929][ T1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 7.113064][ T1] CR2: ffff88823ffff000 CR3: 000000000e33a000 CR4: 00000000003526f0 [ 7.121379][ T1] Call Trace: [ 7.124785][ T1] [ 7.127765][ T1] ? debugfs_create_file_full+0x3f/0x60 [ 7.133408][ T1] drm_dev_register+0x7c/0xd70 [ 7.138229][ T1] vkms_create+0x40d/0x4f0 [ 7.142744][ T1] ? __pfx_vkms_init+0x10/0x10 [ 7.147672][ T1] vkms_init+0x57/0x80 [ 7.151826][ T1] do_one_initcall+0x250/0x860 [ 7.156847][ T1] ? __pfx_vkms_init+0x10/0x10 [ 7.161787][ T1] ? __pfx_do_one_initcall+0x10/0x10 [ 7.167443][ T1] ? __pfx___schedule+0x10/0x10 [ 7.172729][ T1] ? rcu_is_watching+0x16/0xb0 [ 7.177911][ T1] ? trace_irq_disable+0x3b/0x130 [ 7.183136][ T1] ? preempt_schedule_irq+0x64/0x90 [ 7.188495][ T1] ? asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 7.195041][ T1] ? lockdep_hardirqs_on+0x7b/0x110 [ 7.201016][ T1] ? asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 7.207490][ T1] ? parameq+0xc0/0x170 [ 7.211840][ T1] ? next_arg+0x4a0/0x5e0 [ 7.216408][ T1] ? parameq+0x14d/0x170 [ 7.220715][ T1] ? parse_args+0x9ff/0xb10 [ 7.225501][ T1] ? rcu_is_watching+0x16/0xb0 [ 7.230333][ T1] do_initcall_level+0x10a/0x1a0 [ 7.235498][ T1] ? kernel_init+0x22/0x1d0 [ 7.240164][ T1] do_initcalls+0x59/0xa0 [ 7.244587][ T1] kernel_init_freeable+0x29d/0x3e0 [ 7.249934][ T1] ? __pfx_kernel_init+0x10/0x10 [ 7.255219][ T1] kernel_init+0x22/0x1d0 [ 7.259706][ T1] ? __pfx_kernel_init+0x10/0x10 [ 7.265016][ T1] ret_from_fork+0x510/0xb60 [ 7.269663][ T1] ? __pfx_ret_from_fork+0x10/0x10 [ 7.275174][ T1] ? __switch_to+0xc56/0x13f0 [ 7.280353][ T1] ? __pfx_kernel_init+0x10/0x10 [ 7.285772][ T1] ret_from_fork_asm+0x1a/0x30 [ 7.290650][ T1] [ 7.293864][ T1] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 7.301456][ T1] CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT(full) [ 7.303812][ T1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 7.303812][ T1] Call Trace: [ 7.303812][ T1] [ 7.303812][ T1] vpanic+0x56d/0xa60 [ 7.303812][ T1] ? __pfx__printk+0x10/0x10 [ 7.303812][ T1] ? __pfx_vpanic+0x10/0x10 [ 7.303812][ T1] ? is_bpf_text_address+0x292/0x2b0 [ 7.303812][ T1] ? is_bpf_text_address+0x26/0x2b0 [ 7.303812][ T1] panic+0xc5/0xd0 [ 7.303812][ T1] ? __pfx_panic+0x10/0x10 [ 7.303812][ T1] ? ret_from_fork_asm+0x1a/0x30 [ 7.303812][ T1] __warn+0x310/0x4c0 [ 7.303812][ T1] ? drm_mode_config_validate+0x1c6a/0x1e60 [ 7.303812][ T1] ? drm_mode_config_validate+0x1c6a/0x1e60 [ 7.303812][ T1] __report_bug+0x276/0x570 [ 7.303812][ T1] ? look_up_lock_class+0x57/0x110 [ 7.303812][ T1] ? drm_mode_config_validate+0x1c6a/0x1e60 [ 7.303812][ T1] ? __pfx___report_bug+0x10/0x10 [ 7.401844][ T1] ? __pfx_inode_set_ctime_to_ts+0x10/0x10 [ 7.401844][ T1] ? seqcount_lockdep_reader_access+0xeb/0x100 [ 7.401844][ T1] ? ktime_get_coarse_real_ts64_mg+0x1be/0x1e0 [ 7.401844][ T1] report_bug_entry+0x19b/0x290 [ 7.401844][ T1] ? drm_mode_config_validate+0x1cab/0x1e60 [ 7.401844][ T1] ? drm_mode_config_validate+0x1cb0/0x1e60 [ 7.401844][ T1] handle_bug+0x10c/0x230 [ 7.401844][ T1] exc_invalid_op+0x1a/0x50 [ 7.401844][ T1] asm_exc_invalid_op+0x1a/0x20 [ 7.401844][ T1] RIP: 0010:drm_mode_config_validate+0x1cab/0x1e60 [ 7.401844][ T1] Code: 0f 85 ae 00 00 00 4d 8d 77 10 8b 6d 00 4c 89 f0 48 c1 e8 03 80 3c 18 00 74 08 4c 89 f7 e8 0d fd cc fc 49 8b 16 4c 89 ef 89 ee <67> 48 0f b9 3a eb 05 e8 a9 01 5f fc 49 bd 00 00 00 00 00 fc ff df [ 7.401844][ T1] RSP: 0000:ffffc90000067810 EFLAGS: 00010246 [ 7.401844][ T1] RAX: 1ffff11004beca08 RBX: dffffc0000000000 RCX: ffff88801caa5d00 [ 7.401844][ T1] RDX: ffff88801b354fe0 RSI: 0000000000000023 RDI: ffffffff8fee6cd0 [ 7.501674][ T1] RBP: 0000000000000023 R08: ffff88802365383b R09: 1ffff110046ca707 [ 7.501674][ T1] R10: dffffc0000000000 R11: ffffed10046ca708 R12: dffffc0000000000 [ 7.501674][ T1] R13: ffffffff8fee6cd0 R14: ffff888025f65040 R15: ffff888025f65030 [ 7.501674][ T1] ? debugfs_create_file_full+0x3f/0x60 [ 7.501674][ T1] drm_dev_register+0x7c/0xd70 [ 7.501674][ T1] vkms_create+0x40d/0x4f0 [ 7.501674][ T1] ? __pfx_vkms_init+0x10/0x10 [ 7.501674][ T1] vkms_init+0x57/0x80 [ 7.501674][ T1] do_one_initcall+0x250/0x860 [ 7.501674][ T1] ? __pfx_vkms_init+0x10/0x10 [ 7.501674][ T1] ? __pfx_do_one_initcall+0x10/0x10 [ 7.501674][ T1] ? __pfx___schedule+0x10/0x10 [ 7.501674][ T1] ? rcu_is_watching+0x16/0xb0 [ 7.501674][ T1] ? trace_irq_disable+0x3b/0x130 [ 7.501674][ T1] ? preempt_schedule_irq+0x64/0x90 [ 7.501674][ T1] ? asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 7.501674][ T1] ? lockdep_hardirqs_on+0x7b/0x110 [ 7.601589][ T1] ? asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 7.601589][ T1] ? parameq+0xc0/0x170 [ 7.601589][ T1] ? next_arg+0x4a0/0x5e0 [ 7.601589][ T1] ? parameq+0x14d/0x170 [ 7.601589][ T1] ? parse_args+0x9ff/0xb10 [ 7.601589][ T1] ? rcu_is_watching+0x16/0xb0 [ 7.601589][ T1] do_initcall_level+0x10a/0x1a0 [ 7.601589][ T1] ? kernel_init+0x22/0x1d0 [ 7.601589][ T1] do_initcalls+0x59/0xa0 [ 7.601589][ T1] kernel_init_freeable+0x29d/0x3e0 [ 7.601589][ T1] ? __pfx_kernel_init+0x10/0x10 [ 7.601589][ T1] kernel_init+0x22/0x1d0 [ 7.601589][ T1] ? __pfx_kernel_init+0x10/0x10 [ 7.601589][ T1] ret_from_fork+0x510/0xb60 [ 7.601589][ T1] ? __pfx_ret_from_fork+0x10/0x10 [ 7.601589][ T1] ? __switch_to+0xc56/0x13f0 [ 7.601589][ T1] ? __pfx_kernel_init+0x10/0x10 [ 7.601589][ T1] ret_from_fork_asm+0x1a/0x30 [ 7.601589][ T1] [ 7.601589][ T1] Kernel Offset: disabled [ 7.601589][ 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-build2807050058=/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 686bf6572 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=686bf6572b519f4c79772e87d617d0eceaf20dca -X github.com/google/syzkaller/prog.gitRevisionDate=20251103-150646" ./sys/syz-sysgen | grep -q false || go install -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=686bf6572b519f4c79772e87d617d0eceaf20dca -X github.com/google/syzkaller/prog.gitRevisionDate=20251103-150646" ./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=686bf6572b519f4c79772e87d617d0eceaf20dca -X github.com/google/syzkaller/prog.gitRevisionDate=20251103-150646" -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=\"686bf6572b519f4c79772e87d617d0eceaf20dca\" /usr/bin/ld: /tmp/ccVHclPP.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