WARNING in class_for_each_device

------------[ cut here ]------------
class_for_each_device called for class 'devlink' before it was registered
WARNING: drivers/base/class.c:416 at class_for_each_device+0x2d8/0x390 drivers/base/class.c:415, CPU#1: kworker/1:0/32
Modules linked in:
CPU: 1 UID: 0 PID: 32 Comm: kworker/1:0 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Workqueue: events deferred_probe_timeout_work_func
RIP: 0010:class_for_each_device+0x2fc/0x390 drivers/base/class.c:415
Code: 8d 1d 38 5c 0e 0a 4c 89 e8 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 ef e8 62 fc a5 fc 49 8b 55 00 48 89 df 48 c7 c6 f1 46 5d 8d <67> 48 0f b9 3a b8 ea ff ff ff eb 1b e8 93 79 3b fc 49 81 c6 90 00
RSP: 0000:ffffc90000a6fa20 EFLAGS: 00010246
RAX: 1ffffffff17865d4 RBX: ffffffff8f984790 RCX: ffff88801deb5d00
RDX: ffffffff8bc34360 RSI: ffffffff8d5d46f1 RDI: ffffffff8f984790
RBP: ffffc90000a6faf8 R08: ffffc90000a6fa7f R09: 0000000000000000
R10: ffffc90000a6fa60 R11: fffff5200014df50 R12: ffffc90000a6fa60
R13: ffffffff8bc32ea0 R14: 1ffff9200014df48 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff888125fdb000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000000ddb8000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 fw_devlink_drivers_done+0x35/0x50 drivers/base/core.c:1837
 deferred_probe_timeout_work_func+0x21/0x220 drivers/base/dd.c:305
 process_one_work+0x98b/0x1630 kernel/workqueue.c:3318
 process_scheduled_works kernel/workqueue.c:3401 [inline]
 worker_thread+0xb49/0x1140 kernel/workqueue.c:3482
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
----------------
Code disassembly (best guess):
   0:	8d 1d 38 5c 0e 0a    	lea    0xa0e5c38(%rip),%ebx        # 0xa0e5c3e
   6:	4c 89 e8             	mov    %r13,%rax
   9:	48 c1 e8 03          	shr    $0x3,%rax
   d:	42 80 3c 38 00       	cmpb   $0x0,(%rax,%r15,1)
  12:	74 08                	je     0x1c
  14:	4c 89 ef             	mov    %r13,%rdi
  17:	e8 62 fc a5 fc       	call   0xfca5fc7e
  1c:	49 8b 55 00          	mov    0x0(%r13),%rdx
  20:	48 89 df             	mov    %rbx,%rdi
  23:	48 c7 c6 f1 46 5d 8d 	mov    $0xffffffff8d5d46f1,%rsi
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	b8 ea ff ff ff       	mov    $0xffffffea,%eax
  34:	eb 1b                	jmp    0x51
  36:	e8 93 79 3b fc       	call   0xfc3b79ce
  3b:	49                   	rex.WB
  3c:	81                   	.byte 0x81
  3d:	c6                   	(bad)
  3e:	90                   	nop


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@10.128.0.46" "pwd"]: exit status 255
ssh: connect to host 10.128.0.46 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 dfc5a731-b05d-2e78-daf2-616cdfb761a4
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 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8) #0 SMP PREEMPT_RT 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 04/18/2026
[    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
[    0.000005][    T0] kvm-clock: using sched offset of 7431970128 cycles
[    0.000012][    T0] clocksource: kvm-clock: mask: 0xffffffffffffffff max_cycles: 0x1cd42e4dffb, max_idle_ns: 881590591483 ns
[    0.000033][    T0] tsc: Detected 2199.998 MHz processor
[    0.003798][    T0] last_pfn = 0x240000 max_arch_pserialport: Connected to syzkaller.us-central1-c.ci-upstream-linux-next-kasan-gce-root-test-job-1 port 1 (session ID: a4b6da9152da2ee03007453d46cc8e614df574963c3664f75dababf827cae6e9, active connections: 1).
fn = 0x400000000
[    0.003845][    T0] MTRR map: 4 entries (3 fixed + 1 variable; max 19), built from 8 variable MTRRs
[    0.003856][    T0] x86/PAT: Configuration [0-7]: WB  WC  UC- UC  WB  WP  UC- WT  
[    0.003913][    T0] last_pfn = 0xbfffd max_arch_pfn = 0x400000000
[    0.008931][    T0] found SMP MP-table at [mem 0x000f2890-0x000f289f]
[    0.008957][    T0] Using GB pages for direct mapping
[    0.012441][    T0] ACPI: Early table checksum verification disabled
[    0.012464][    T0] ACPI: RSDP 0x00000000000F2610 000014 (v00 Google)
[    0.012482][    T0] ACPI: RSDT 0x00000000BFFFFFB0 000038 (v01 Google GOOGRSDT 00000001 GOOG 00000001)
[    0.012506][    T0] ACPI: FACP 0x00000000BFFFF370 0000F4 (v02 Google GOOGFACP 00000001 GOOG 00000001)
[    0.012530][    T0] ACPI: DSDT 0x00000000BFFFD900 001A64 (v01 Google GOOGDSDT 00000001 GOOG 00000001)
[    0.012549][    T0] ACPI: FACS 0x00000000BFFFD8C0 000040
[    0.012564][    T0] ACPI: FACS 0x00000000BFFFD8C0 000040
[    0.012579][    T0] ACPI: SRAT 0x00000000BFFFFEA0 0000C8 (v03 Google GOOGSRAT 00000001 GOOG 00000001)
[    0.012598][    T0] ACPI: APIC 0x00000000BFFFFDF0 000076 (v05 Google GOOGAPIC 00000001 GOOG 00000001)
[    0.012617][    T0] ACPI: SSDT 0x00000000BFFFF470 000980 (v01 Google GOOGSSDT 00000001 GOOG 00000001)
[    0.012636][    T0] ACPI: WAET 0x00000000BFFFFE70 000028 (v01 Google GOOGWAET 00000001 GOOG 00000001)
[    0.012652][    T0] ACPI: Reserving FACP table memory at [mem 0xbffff370-0xbffff463]
[    0.012660][    T0] ACPI: Reserving DSDT table memory at [mem 0xbfffd900-0xbffff363]
[    0.012667][    T0] ACPI: Reserving FACS table memory at [mem 0xbfffd8c0-0xbfffd8ff]
[    0.012674][    T0] ACPI: Reserving FACS table memory at [mem 0xbfffd8c0-0xbfffd8ff]
[    0.012681][    T0] ACPI: Reserving SRAT table memory at [mem 0xbffffea0-0xbfffff67]
[    0.012688][    T0] ACPI: Reserving APIC table memory at [mem 0xbffffdf0-0xbffffe65]
[    0.012695][    T0] ACPI: Reserving SSDT table memory at [mem 0xbffff470-0xbffffdef]
[    0.012702][    T0] ACPI: Reserving WAET table memory at [mem 0xbffffe70-0xbffffe97]
[    0.012823][    T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x00000000-0x0009ffff]
[    0.012834][    T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x00100000-0xbfffffff]
[    0.012842][    T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x100000000-0x23fffffff]
[    0.012854][    T0] NUMA: Node 0 [mem 0x00001000-0x0009ffff] + [mem 0x00100000-0xbfffffff] -> [mem 0x00001000-0xbfffffff]
[    0.012866][    T0] NUMA: Node 0 [mem 0x00001000-0xbfffffff] + [mem 0x100000000-0x23fffffff] -> [mem 0x00001000-0x23fffffff]
[    0.012888][    T0] Faking node 0 at [mem 0x0000000000001000-0x0000000140000fff] (5120MB)
[    0.012897][    T0] Faking node 1 at [mem 0x0000000140001000-0x000000023fffffff] (4095MB)
[    0.012991][    T0] NODE_DATA(0) allocated [mem 0x13fffac80-0x140000fff]
[    0.013743][    T0] NODE_DATA(1) allocated [mem 0x23fff6c80-0x23fffcfff]
[    0.293303][    T0] KernelAddressSanitizer initialized (generic)
[    0.294113][    T0] ACPI: PM-Timer IO Port: 0xb008
[    0.294153][    T0] ACPI: LAPIC_NMI (acpi_id[0xff] dfl dfl lint[0x1])
[    0.294303][    T0] IOAPIC[0]: apic_id 0, version 17, address 0xfec00000, GSI 0-23
[    0.294318][    T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 high level)
[    0.294328][    T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
[    0.294341][    T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 high level)
[    0.294350][    T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 high level)
[    0.294370][    T0] ACPI: Using ACPI (MADT) for SMP configuration information
[    0.294382][    T0] CPU topo: Max. logical packages:   1
[    0.294387][    T0] CPU topo: Max. logical nodes:      1
[    0.294391][    T0] CPU topo: Num. nodes per package:  1
[    0.294399][    T0] CPU topo: Max. logical dies:       1
[    0.294403][    T0] CPU topo: Max. dies per package:   1
[    0.294415][    T0] CPU topo: Max. threads per core:   2
[    0.294420][    T0] CPU topo: Num. cores per package:     1
[    0.294425][    T0] CPU topo: Num. threads per package:   2
[    0.294429][    T0] CPU topo: Allowing 2 present CPUs plus 0 hotplug CPUs
[    0.294538][    T0] PM: hibernation: Registered nosave memory: [mem 0x00000000-0x00000fff]
[    0.294549][    T0] PM: hibernation: Registered nosave memory: [mem 0x0009f000-0x000fffff]
[    0.294557][    T0] PM: hibernation: Registered nosave memory: [mem 0xbfffd000-0xffffffff]
[    0.294580][    T0] [gap 0xc0000000-0xfffbbfff] available for PCI devices
[    0.294587][    T0] Booting paravirtualized kernel on KVM
[    0.294599][    T0] clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[    0.426533][    T0] Zone ranges:
[    0.426542][    T0]   DMA      [mem 0x0000000000001000-0x0000000000ffffff]
[    0.426557][    T0]   DMA32    [mem 0x0000000001000000-0x00000000ffffffff]
[    0.426566][    T0]   Normal   [mem 0x0000000100000000-0x000000023fffffff]
[    0.426574][    T0]   Device   empty
[    0.426579][    T0] Movable zone start for each node
[    0.426583][    T0] Early memory node ranges
[    0.426586][    T0]   node   0: [mem 0x0000000000001000-0x000000000009efff]
[    0.426594][    T0]   node   0: [mem 0x0000000000100000-0x00000000bfffcfff]
[    0.426602][    T0]   node   0: [mem 0x0000000100000000-0x0000000140000fff]
[    0.426609][    T0]   node   1: [mem 0x0000000140001000-0x000000023fffffff]
[    0.426619][    T0] Initmem setup node 0 [mem 0x0000000000001000-0x0000000140000fff]
[    0.426638][    T0] Initmem setup node 1 [mem 0x0000000140001000-0x000000023fffffff]
[    0.426686][    T0] On node 0, zone DMA: 1 pages in unavailable ranges
[    0.426937][    T0] On node 0, zone DMA: 97 pages in unavailable ranges
[    0.491417][    T0] On node 0, zone Normal: 3 pages in unavailable ranges
[    0.555606][    T0] setup_percpu: NR_CPUS:8 nr_cpumask_bits:2 nr_cpu_ids:2 nr_node_ids:2
[    0.556286][    T0] percpu: Embedded 71 pages/cpu s253768 r8192 d28856 u1048576
[    0.556457][    T0] kvm-guest: PV spinlocks enabled
[    0.556467][    T0] PV qspinlock hash table entries: 256 (order: 0, 4096 bytes, linear)
[    0.556487][    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 \
[    0.556516][    T0] Kernel command line: comedi.comedi_num_legacy_minors=4 panic_on_warn=1 BOOT_IMAGE=/boot/bzImage root=/dev/sda1 console=ttyS0
[    0.560789][    T0] Unknown kernel command line parameters "nbds_max=32", will be passed to user space.
[    0.560862][    T0] random: crng init done
[    0.560866][    T0] printk: log buffer data + meta data: 262144 + 917504 = 1179648 bytes
[    0.561066][    T0] software IO TLB: area num 2.
[    0.586903][    T0] Fallback order for Node 0: 0 1 
[    0.586926][    T0] Fallback order for Node 1: 1 0 
[    0.586942][    T0] Built 2 zonelists, mobility grouping on.  Total pages: 2097051
[    0.586950][    T0] Policy zone: Normal
[    0.587600][    T0] mem auto-init: stack:all(zero), heap alloc:on, heap free:off
[    0.587609][    T0] stackdepot: allocating hash table via alloc_large_system_hash
[    0.587619][    T0] stackdepot hash table entries: 1048576 (order: 12, 16777216 bytes, linear)
[    0.591834][    T0] stackdepot: allocating space for 8192 stack pools via memblock
[    1.191238][    T0] **********************************************************
[    1.191248][    T0] **   NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE   **
[    1.191252][    T0] **                                                      **
[    1.191256][    T0] ** This system shows unhashed kernel memory addresses   **
[    1.191260][    T0] ** via the console, logs, and other interfaces. This    **
[    1.191263][    T0] ** might reduce the security of your system.            **
[    1.191267][    T0] **                                                      **
[    1.191271][    T0] ** If you see this message and you are not debugging    **
[    1.191275][    T0] ** the kernel, report this immediately to your system   **
[    1.191278][    T0] ** administrator!                                       **
[    1.191282][    T0] **                                                      **
[    1.191286][    T0] ** Use hash_pointers=always to force this mode off      **
[    1.191297][    T0] **                                                      **
[    1.191301][    T0] **   NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE   **
[    1.191305][    T0] **********************************************************
[    1.194709][    T0] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=2
[    1.318805][    T0] allocated 167772160 bytes of page_ext
[    1.318847][    T0] Node 0, zone      DMA: page owner found early allocated 0 pages
[    1.332515][    T0] Node 0, zone    DMA32: page owner found early allocated 21120 pages
[    1.336832][    T0] Node 0, zone   Normal: page owner found early allocated 131 pages
[    1.347689][    T0] Node 1, zone   Normal: page owner found early allocated 19848 pages
[    1.348218][    T0] Kernel/User page tables isolation: enabled
[    1.350407][    T0] Dynamic Preempt: full
[    1.351549][    T0] Running RCU self tests
[    1.351554][    T0] Running RCU synchronous self tests
[    1.351558][    T0] rcu: Preemptible hierarchical RCU implementation.
[    1.351562][    T0] rcu: 	RCU lockdep checking is enabled.
[    1.351566][    T0] rcu: 	RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=2.
[    1.351572][    T0] rcu: 	RCU priority boosting: priority 1 delay 500 ms.
[    1.351578][    T0] rcu: 	RCU callback double-/use-after-free debug is enabled.
[    1.351583][    T0] rcu: 	RCU_SOFTIRQ processing moved to rcuc kthreads.
[    1.351586][    T0] rcu: 	RCU debug extended QS entry/exit.
[    1.351590][    T0] 	No expedited grace period (rcu_normal_after_boot).
[    1.351593][    T0] 	Trampoline variant of Tasks RCU enabled.
[    1.351597][    T0] 	Tracing variant of Tasks RCU enabled.
[    1.351600][    T0] rcu: RCU calculated value of scheduler-enlistment delay is 10 jiffies.
[    1.351606][    T0] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2
[    1.351778][    T0] Running RCU synchronous self tests
[    1.351813][    T0] RCU Tasks: Setting shift to 1 and lim to 1 rcu_task_cb_adjust=1 rcu_task_cpu_ids=2.
[    1.517856][    T0] NR_IRQS: 4352, nr_irqs: 440, preallocated irqs: 16
[    1.519007][    T0] rcu: srcu_init: Setting srcu_struct sizes based on contention.
[    1.519790][    T0] kfence: initialized - using 2097152 bytes for 255 objects at 0xffff88823be00000-0xffff88823c000000
[    1.521788][    T0] Console: colour VGA+ 80x25
[    1.907804][    T0] printk: legacy console [ttyS0] enabled
[    1.907817][    T0] printk: legacy bootconsole [earlyser0] disabled
[    1.907900][    T0] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar
[    1.907905][    T0] ... MAX_LOCKDEP_SUBCLASSES:  8
[    1.907909][    T0] ... MAX_LOCK_DEPTH:          48
[    1.907914][    T0] ... MAX_LOCKDEP_KEYS:        8192
[    1.907918][    T0] ... CLASSHASH_SIZE:          4096
[    1.907923][    T0] ... MAX_LOCKDEP_ENTRIES:     1048576
[    1.907927][    T0] ... MAX_LOCKDEP_CHAINS:      1048576
[    1.907932][    T0] ... CHAINHASH_SIZE:          524288
[    1.907936][    T0]  memory used by lock dependency info: 106625 kB
[    1.907941][    T0]  memory used for stack traces: 8320 kB
[    1.907946][    T0]  per task-struct memory footprint: 1920 bytes
[    1.908272][    T0] ACPI: Core revision 20251212
[    1.909700][    T0] APIC: Switch to symmetric I/O mode setup
[    1.910423][    T0] x2apic enabled
[    1.915681][    T0] APIC: Switched APIC routing to: physical x2apic
[    1.923290][    T0] ..TIMER: vector=0x30 apic1=0 pin1=0 apic2=-1 pin2=-1
[    1.923772][    T0] clocksource: tsc-early: mask: 0xffffffffffffffff max_cycles: 0x1fb63109b96, max_idle_ns: 440795265316 ns
[    1.923822][    T0] Calibrating delay loop (skipped) preset value.. 4399.99 BogoMIPS (lpj=21999980)
[    1.924503][    T0] Last level iTLB entries: 4KB 64, 2MB 8, 4MB 8
[    1.924511][    T0] Last level dTLB entries: 4KB 64, 2MB 32, 4MB 32, 1GB 4
[    1.924581][    T0] mitigations: Enabled attack vectors: user_kernel, user_user, guest_host, guest_guest, SMT mitigations: auto
[    1.924601][    T0] Speculative Store Bypass: Mitigation: Speculative Store Bypass disabled via prctl
[    1.924608][    T0] Spectre V2 : Mitigation: IBRS
[    1.924612][    T0] RETBleed: Mitigation: IBRS
[    1.924616][    T0] ITS: Mitigation: Aligned branch/return thunks
[    1.924621][    T0] Spectre V2 : User space: Mitigation: STIBP via prctl
[    1.924625][    T0] MDS: Mitigation: Clear CPU buffers
[    1.924629][    T0] TAA: Mitigation: Clear CPU buffers
[    1.924633][    T0] MMIO Stale Data: Vulnerable: Clear CPU buffers attempted, no microcode
[    1.924638][    T0] Spectre V1 : Mitigation: usercopy/swapgs barriers and __user pointer sanitization
[    1.924646][    T0] Spectre V2 : Spectre v2 / SpectreRSB: Filling RSB on context switch and VMEXIT
[    1.924667][    T0] Spectre V2 : mitigation: Enabling conditional Indirect Branch Prediction Barrier
[    1.924722][    T0] active return thunk: its_return_thunk
[    1.924747][    T0] Spectre V2 : Spectre BHI mitigation: SW BHB clearing on syscall and VM exit
[    1.924812][    T0] x86/fpu: Supporting XSAVE feature 0x001: 'x87 floating point registers'
[    1.924822][    T0] x86/fpu: Supporting XSAVE feature 0x002: 'SSE registers'
[    1.924831][    T0] x86/fpu: Supporting XSAVE feature 0x004: 'AVX registers'
[    1.924840][    T0] x86/fpu: xstate_offset[2]:  576, xstate_sizes[2]:  256
[    1.924852][    T0] x86/fpu: Enabled xstate features 0x7, context size is 832 bytes, using 'standard' format.
[    2.330603][    T0] pid_max: default: 32768 minimum: 301
[    2.332735][    T0] landlock: Up and running.
[    2.332745][    T0] Yama: becoming mindful.
[    2.333257][    T0] TOMOYO Linux initialized
[    2.334889][    T0] AppArmor: AppArmor initialized
[    2.338181][    T0] LSM support for eBPF active
[    2.345533][    T0] Dentry cache hash table entries: 1048576 (order: 11, 8388608 bytes, vmalloc hugepage)
[    2.348871][    T0] Inode-cache hash table entries: 524288 (order: 10, 4194304 bytes, vmalloc hugepage)
[    2.349350][    T0] Mount-cache hash table entries: 16384 (order: 5, 131072 bytes, vmalloc)
[    2.349572][    T0] Mountpoint-cache hash table entries: 16384 (order: 5, 131072 bytes, vmalloc)
[    2.352999][    T0] VFS: Finished mounting rootfs on nullfs
[    2.359713][    T0] Running RCU synchronous self tests
[    2.359728][    T0] Running RCU synchronous self tests
[    2.481490][    T1] smpboot: CPU0: Intel(R) Xeon(R) CPU @ 2.20GHz (family: 0x6, model: 0x4f, stepping: 0x0)
[    2.483810][    T1] Performance Events: unsupported CPU family 6 model 79 no PMU driver, software events only.
[    2.483810][    T1] signal: max sigframe size: 1776
[    2.493893][    T1] rcu: Hierarchical SRCU implementation.
[    2.493902][    T1] rcu: 	Max phase no-delay instances is 1000.
[    2.573919][    T1] Timer migration: 1 hierarchy levels; 8 children per group; 0 crossnode level
[    2.734826][    T1] NMI watchdog: Perf NMI watchdog permanently disabled
[    2.736069][    T1] smp: Bringing up secondary CPUs ...
[    2.755742][    T1] smpboot: x86: Booting SMP configuration:
[    2.755758][    T1] .... node  #0, CPUs:      #1
[    2.758447][    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.
[    2.758447][    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.
[    2.758447][    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.
[    2.758447][    T1] smp: Brought up 2 nodes, 2 CPUs
[    2.758447][    T1] smpboot: Total of 2 processors activated (8799.99 BogoMIPS)
[    2.766576][    T1] Memory: 6465852K/8388204K available (167040K kernel code, 29616K rwdata, 39740K rodata, 25464K init, 129272K bss, 1733728K reserved, 0K cma-reserved)
[    2.790708][    T1] devtmpfs: initialized
[    2.795669][    T1] x86/mm: Memory block size: 128MB
[    2.892537][    T1] Running RCU synchronous self tests
[    2.892623][    T1] Running RCU synchronous self tests
[    2.896651][    T1] Running RCU Tasks wait API self tests
[    2.896651][    T1] Running RCU Tasks Trace wait API self tests
[    2.906626][    T1] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[    2.906626][   T32] ------------[ cut here ]------------
[    2.906626][   T32] class_for_each_device called for class 'devlink' before it was registered
[    2.906626][   T32] WARNING: drivers/base/class.c:416 at class_for_each_device+0x2d8/0x390, CPU#1: kworker/1:0/32
[    2.906626][   T32] Modules linked in:
[    2.906626][   T32] CPU: 1 UID: 0 PID: 32 Comm: kworker/1:0 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[    2.906626][   T32] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[    2.906626][   T32] Workqueue: events deferred_probe_timeout_work_func
[    2.906626][   T32] RIP: 0010:class_for_each_device+0x2fc/0x390
[    2.906626][   T32] Code: 8d 1d 38 5c 0e 0a 4c 89 e8 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 ef e8 62 fc a5 fc 49 8b 55 00 48 89 df 48 c7 c6 f1 46 5d 8d <67> 48 0f b9 3a b8 ea ff ff ff eb 1b e8 93 79 3b fc 49 81 c6 90 00
[    2.906626][   T32] RSP: 0000:ffffc90000a6fa20 EFLAGS: 00010246
[    2.906626][   T32] RAX: 1ffffffff17865d4 RBX: ffffffff8f984790 RCX: ffff88801deb5d00
[    2.906626][   T32] RDX: ffffffff8bc34360 RSI: ffffffff8d5d46f1 RDI: ffffffff8f984790
[    2.906626][   T32] RBP: ffffc90000a6faf8 R08: ffffc90000a6fa7f R09: 0000000000000000
[    2.906626][   T32] R10: ffffc90000a6fa60 R11: fffff5200014df50 R12: ffffc90000a6fa60
[    2.906626][   T32] R13: ffffffff8bc32ea0 R14: 1ffff9200014df48 R15: dffffc0000000000
[    2.906626][   T32] FS:  0000000000000000(0000) GS:ffff888125fdb000(0000) knlGS:0000000000000000
[    2.906626][   T32] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.906626][   T32] CR2: 0000000000000000 CR3: 000000000ddb8000 CR4: 00000000003506f0
[    2.906626][   T32] Call Trace:
[    2.906626][   T32]  <TASK>
[    2.906626][   T32]  ? __pfx_fw_devlink_no_driver+0x10/0x10
[    2.906626][   T32]  ? __pfx_class_for_each_device+0x10/0x10
[    2.906626][   T32]  ? lockdep_hardirqs_on+0x7a/0x110
[    2.906626][   T32]  ? _raw_spin_unlock_irqrestore+0x4c/0x80
[    2.906626][   T32]  ? mutex_lock_nested+0x152/0x1d0
[    2.906626][   T32]  ? fw_devlink_drivers_done+0x1e/0x50
[    2.906626][   T32]  ? process_one_work+0x8be/0x1630
[    2.906626][   T32]  fw_devlink_drivers_done+0x35/0x50
[    2.906626][   T32]  deferred_probe_timeout_work_func+0x21/0x220
[    2.906626][   T32]  ? process_one_work+0x8be/0x1630
[    2.906626][   T32]  process_one_work+0x98b/0x1630
[    2.906626][   T32]  ? __pfx_do_raw_spin_lock+0x10/0x10
[    2.906626][   T32]  ? __pfx_process_one_work+0x10/0x10
[    2.906626][   T32]  ? rcuwait_wake_up+0x1c/0x230
[    2.906626][   T32]  worker_thread+0xb49/0x1140
[    2.906626][   T32]  kthread+0x388/0x470
[    2.906626][   T32]  ? __pfx_worker_thread+0x10/0x10
[    2.906626][   T32]  ? __pfx_kthread+0x10/0x10
[    2.906626][   T32]  ret_from_fork+0x514/0xb70
[    2.906626][   T32]  ? __pfx_ret_from_fork+0x10/0x10
[    2.906626][   T32]  ? __switch_to+0xc79/0x1410
[    2.906626][   T32]  ? __pfx_kthread+0x10/0x10
[    2.906626][   T32]  ret_from_fork_asm+0x1a/0x30
[    2.906626][   T32]  </TASK>
[    2.906626][   T32] Kernel panic - not syncing: kernel: panic_on_warn set ...
[    2.906626][   T32] CPU: 1 UID: 0 PID: 32 Comm: kworker/1:0 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[    2.906626][   T32] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[    2.906626][   T32] Workqueue: events deferred_probe_timeout_work_func
[    2.906626][   T32] Call Trace:
[    2.906626][   T32]  <TASK>
[    2.906626][   T32]  vpanic+0x56c/0xa60
[    2.906626][   T32]  ? __pfx__printk+0x10/0x10
[    2.906626][   T32]  ? __pfx_vpanic+0x10/0x10
[    2.906626][   T32]  ? is_bpf_text_address+0x292/0x2b0
[    2.906626][   T32]  ? is_bpf_text_address+0x26/0x2b0
[    2.906626][   T32]  panic+0xc5/0xd0
[    2.906626][   T32]  ? __pfx_panic+0x10/0x10
[    2.906626][   T32]  ? ret_from_fork_asm+0x1a/0x30
[    2.906626][   T32]  __warn+0x315/0x4c0
[    2.906626][   T32]  ? class_for_each_device+0x2d8/0x390
[    2.906626][   T32]  ? class_for_each_device+0x2d8/0x390
[    2.906626][   T32]  __report_bug+0x339/0x540
[    2.906626][   T32]  ? class_for_each_device+0x2d8/0x390
[    2.906626][   T32]  ? __pfx___report_bug+0x10/0x10
[    2.906626][   T32]  report_bug_entry+0x19a/0x290
[    2.906626][   T32]  ? class_for_each_device+0x2fc/0x390
[    2.906626][   T32]  ? class_for_each_device+0x301/0x390
[    2.906626][   T32]  handle_bug+0xce/0x200
[    2.906626][   T32]  exc_invalid_op+0x1a/0x50
[    2.906626][   T32]  asm_exc_invalid_op+0x1a/0x20
[    2.906626][   T32] RIP: 0010:class_for_each_device+0x2fc/0x390
[    2.906626][   T32] Code: 8d 1d 38 5c 0e 0a 4c 89 e8 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 ef e8 62 fc a5 fc 49 8b 55 00 48 89 df 48 c7 c6 f1 46 5d 8d <67> 48 0f b9 3a b8 ea ff ff ff eb 1b e8 93 79 3b fc 49 81 c6 90 00
[    2.906626][   T32] RSP: 0000:ffffc90000a6fa20 EFLAGS: 00010246
[    2.906626][   T32] RAX: 1ffffffff17865d4 RBX: ffffffff8f984790 RCX: ffff88801deb5d00
[    2.906626][   T32] RDX: ffffffff8bc34360 RSI: ffffffff8d5d46f1 RDI: ffffffff8f984790
[    2.906626][   T32] RBP: ffffc90000a6faf8 R08: ffffc90000a6fa7f R09: 0000000000000000
[    2.906626][   T32] R10: ffffc90000a6fa60 R11: fffff5200014df50 R12: ffffc90000a6fa60
[    2.906626][   T32] R13: ffffffff8bc32ea0 R14: 1ffff9200014df48 R15: dffffc0000000000
[    2.906626][   T32]  ? __pfx_fw_devlink_no_driver+0x10/0x10
[    2.906626][   T32]  ? __pfx_class_for_each_device+0x10/0x10
[    2.906626][   T32]  ? lockdep_hardirqs_on+0x7a/0x110
[    2.906626][   T32]  ? _raw_spin_unlock_irqrestore+0x4c/0x80
[    2.906626][   T32]  ? mutex_lock_nested+0x152/0x1d0
[    2.906626][   T32]  ? fw_devlink_drivers_done+0x1e/0x50
[    2.906626][   T32]  ? process_one_work+0x8be/0x1630
[    2.906626][   T32]  fw_devlink_drivers_done+0x35/0x50
[    2.906642][   T32]  deferred_probe_timeout_work_func+0x21/0x220
[    2.906671][   T32]  ? process_one_work+0x8be/0x1630
[    2.906698][   T32]  process_one_work+0x98b/0x1630
[    2.906727][   T32]  ? __pfx_do_raw_spin_lock+0x10/0x10
[    2.906763][   T32]  ? __pfx_process_one_work+0x10/0x10
[    2.906789][   T32]  ? rcuwait_wake_up+0x1c/0x230
[    2.906826][   T32]  worker_thread+0xb49/0x1140
[    2.906865][   T32]  kthread+0x388/0x470
[    2.906887][   T32]  ? __pfx_worker_thread+0x10/0x10
[    2.906903][   T32]  ? __pfx_kthread+0x10/0x10
[    2.906927][   T32]  ret_from_fork+0x514/0xb70
[    2.906953][   T32]  ? __pfx_ret_from_fork+0x10/0x10
[    2.906977][   T32]  ? __switch_to+0xc79/0x1410
[    2.907000][   T32]  ? __pfx_kthread+0x10/0x10
[    2.907023][   T32]  ret_from_fork_asm+0x1a/0x30
[    2.907063][   T32]  </TASK>


syzkaller build log:
go env (err=<nil>)
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-build2634007062=/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='go1.26.0'
GOWORK=''
PKG_CONFIG='pkg-config'

git status (err=<nil>)
HEAD detached at abade7941e7
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=abade7941e7b8a888e052cda1a92805ab785c77e -X github.com/google/syzkaller/prog.gitRevisionDate=20250708-142552"  -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=\"abade7941e7b8a888e052cda1a92805ab785c77e\"
/usr/bin/ld: /tmp/ccCUV7X9.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