WARNING in enable_work
------------[ cut here ]------------
workqueue: work disable count underflowed
WARNING: CPU: 1 PID: 22 at kernel/workqueue.c:4317 work_offqd_enable kernel/workqueue.c:4317 [inline]
WARNING: CPU: 1 PID: 22 at kernel/workqueue.c:4317 enable_work+0x34d/0x360 kernel/workqueue.c:4488
Modules linked in:
CPU: 1 UID: 0 PID: 22 Comm: cpuhp/1 Not tainted 6.13.0-rc5-next-20250106-syzkaller-g4e16367cfe0c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:work_offqd_enable kernel/workqueue.c:4317 [inline]
RIP: 0010:enable_work+0x34d/0x360 kernel/workqueue.c:4488
Code: d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc e8 08 69 37 00 c6 05 e3 0b 7d 0e 01 90 48 c7 c7 80 d7 09 8c e8 74 23 f8 ff 90 <0f> 0b 90 90 e9 56 ff ff ff e8 a5 6a 6a 0a 0f 1f 44 00 00 90 90 90
RSP: 0000:ffffc900001c7b20 EFLAGS: 00010046
RAX: 3b76ae2cfe35ec00 RBX: 0000000000000000 RCX: ffff88801cee3c00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900001c7be8 R08: ffffffff817ff732 R09: 1ffffffff1cfa188
R10: dffffc0000000000 R11: fffffbfff1cfa189 R12: 1ffff92000038f68
R13: 1ffff92000038f70 R14: 001fffffffc00001 R15: ffff8880b87383f0
FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000000e736000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
vmstat_cpu_online+0xbb/0xe0 mm/vmstat.c:2151
cpuhp_invoke_callback+0x48d/0x830 kernel/cpu.c:194
cpuhp_thread_fun+0x41c/0x810 kernel/cpu.c:1103
smpboot_thread_fn+0x544/0xa30 kernel/smpboot.c:164
kthread+0x7a9/0x920 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
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@10.128.10.47" "pwd"]: exit status 255
ssh: connect to host 10.128.10.47 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' (RSA) to the list of known hosts.
serialport: Connected to syzkaller.us-central1-c.ci-upstream-linux-next-kasan-gce-root-test-job-parallel-1 port 1 (session ID: 9191110cd8b0b66ad6be020fa2bb2427a97de1970a294cfb9af282c8816a7bc1, active connections: 1).
SeaBIOS (version 1.8.2-google)
Total RAM Size = 0x0000000200000000 = 8192 MiB
CPUs found: 2 Max CPUs supported: 2
SeaBIOS (version 1.8.2-google)
Machine UUID 344730ca-18e7-c53a-a827-a73ac99b2111
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 0x000f2790: 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 6.13.0-rc5-next-20250106-syzkaller-g4e16367cfe0c (syzkaller@syzkaller) (Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40) #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] 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] **********************************************************
[ 0.000000][ T0] ** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE **
[ 0.000000][ T0] ** **
[ 0.000000][ T0] ** This system shows unhashed kernel memory addresses **
[ 0.000000][ T0] ** via the console, logs, and other interfaces. This **
[ 0.000000][ T0] ** might reduce the security of your system. **
[ 0.000000][ T0] ** **
[ 0.000000][ T0] ** If you see this message and you are not debugging **
[ 0.000000][ T0] ** the kernel, report this immediately to your system **
[ 0.000000][ T0] ** administrator! **
[ 0.000000][ T0] ** **
[ 0.000000][ T0] ** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE **
[ 0.000000][ T0] **********************************************************
[ 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 09/13/2024
[ 0.000000][ T0] DMI: Memory slots populated: 1/1
[ 0.000000][ T0] Hypervisor detected: KVM
[ 0.000000][ T0] kvm-clock: Using msrs 4b564d01 and 4b564d00
[ 0.000005][ T0] kvm-clock: using sched offset of 4664638909 cycles
[ 0.001047][ T0] clocksource: kvm-clock: mask: 0xffffffffffffffff max_cycles: 0x1cd42e4dffb, max_idle_ns: 881590591483 ns
[ 0.003726][ T0] tsc: Detected 2200.180 MHz processor
[ 0.009014][ T0] last_pfn = 0x240000 max_arch_pfn = 0x400000000
[ 0.010170][ T0] MTRR map: 4 entries (3 fixed + 1 variable; max 19), built from 8 variable MTRRs
[ 0.011813][ T0] x86/PAT: Configuration [0-7]: WB WC UC- UC WB WP UC- WT
[ 0.013101][ T0] last_pfn = 0xbfffd max_arch_pfn = 0x400000000
[ 0.020601][ T0] found SMP MP-table at [mem 0x000f2a50-0x000f2a5f]
[ 0.021672][ T0] Using GB pages for direct mapping
[ 0.026300][ T0] ACPI: Early table checksum verification disabled
[ 0.027266][ T0] ACPI: RSDP 0x00000000000F27D0 000014 (v00 Google)
[ 0.028600][ T0] ACPI: RSDT 0x00000000BFFFFFA0 000038 (v01 Google GOOGRSDT 00000001 GOOG 00000001)
[ 0.030491][ T0] ACPI: FACP 0x00000000BFFFF330 0000F4 (v02 Google GOOGFACP 00000001 GOOG 00000001)
[ 0.032360][ T0] ACPI: DSDT 0x00000000BFFFD8C0 001A64 (v01 Google GOOGDSDT 00000001 GOOG 00000001)
[ 0.034306][ T0] ACPI: FACS 0x00000000BFFFD880 000040
[ 0.035433][ T0] ACPI: FACS 0x00000000BFFFD880 000040
[ 0.036264][ T0] ACPI: SRAT 0x00000000BFFFFE60 0000C8 (v03 Google GOOGSRAT 00000001 GOOG 00000001)
[ 0.038024][ T0] ACPI: APIC 0x00000000BFFFFDB0 000076 (v05 Google GOOGAPIC 00000001 GOOG 00000001)
[ 0.039528][ T0] ACPI: SSDT 0x00000000BFFFF430 000980 (v01 Google GOOGSSDT 00000001 GOOG 00000001)
[ 0.041138][ T0] ACPI: WAET 0x00000000BFFFFE30 000028 (v01 Google GOOGWAET 00000001 GOOG 00000001)
[ 0.042591][ T0] ACPI: Reserving FACP table memory at [mem 0xbffff330-0xbffff423]
[ 0.044015][ T0] ACPI: Reserving DSDT table memory at [mem 0xbfffd8c0-0xbffff323]
[ 0.045706][ T0] ACPI: Reserving FACS table memory at [mem 0xbfffd880-0xbfffd8bf]
[ 0.047094][ T0] ACPI: Reserving FACS table memory at [mem 0xbfffd880-0xbfffd8bf]
[ 0.048317][ T0] ACPI: Reserving SRAT table memory at [mem 0xbffffe60-0xbfffff27]
[ 0.049496][ T0] ACPI: Reserving APIC table memory at [mem 0xbffffdb0-0xbffffe25]
[ 0.050781][ T0] ACPI: Reserving SSDT table memory at [mem 0xbffff430-0xbffffdaf]
[ 0.051962][ T0] ACPI: Reserving WAET table memory at [mem 0xbffffe30-0xbffffe57]
[ 0.053352][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x00000000-0x0009ffff]
[ 0.054397][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x00100000-0xbfffffff]
[ 0.055357][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x100000000-0x23fffffff]
[ 0.056303][ T0] NUMA: Node 0 [mem 0x00001000-0x0009ffff] + [mem 0x00100000-0xbfffffff] -> [mem 0x00001000-0xbfffffff]
[ 0.057739][ T0] NUMA: Node 0 [mem 0x00001000-0xbfffffff] + [mem 0x100000000-0x23fffffff] -> [mem 0x00001000-0x23fffffff]
[ 0.059432][ T0] Faking node 0 at [mem 0x0000000000001000-0x0000000140000fff] (5120MB)
[ 0.060924][ T0] Faking node 1 at [mem 0x0000000140001000-0x000000023fffffff] (4095MB)
[ 0.062656][ T0] NODE_DATA(0) allocated [mem 0x13fffb540-0x140000fff]
[ 0.064512][ T0] NODE_DATA(1) allocated [mem 0x23fff7540-0x23fffcfff]
[ 0.105025][ T0] Zone ranges:
[ 0.105826][ T0] DMA [mem 0x0000000000001000-0x0000000000ffffff]
[ 0.107011][ T0] DMA32 [mem 0x0000000001000000-0x00000000ffffffff]
[ 0.108490][ T0] Normal [mem 0x0000000100000000-0x000000023fffffff]
[ 0.109837][ T0] Device empty
[ 0.110451][ T0] Movable zone start for each node
[ 0.111958][ T0] Early memory node ranges
[ 0.112829][ T0] node 0: [mem 0x0000000000001000-0x000000000009efff]
[ 0.114203][ T0] node 0: [mem 0x0000000000100000-0x00000000bfffcfff]
[ 0.115670][ T0] node 0: [mem 0x0000000100000000-0x0000000140000fff]
[ 0.117568][ T0] node 1: [mem 0x0000000140001000-0x000000023fffffff]
[ 0.118704][ T0] Initmem setup node 0 [mem 0x0000000000001000-0x0000000140000fff]
[ 0.119957][ T0] Initmem setup node 1 [mem 0x0000000140001000-0x000000023fffffff]
[ 0.121352][ T0] On node 0, zone DMA: 1 pages in unavailable ranges
[ 0.123557][ T0] On node 0, zone DMA: 97 pages in unavailable ranges
[ 0.191151][ T0] On node 0, zone Normal: 3 pages in unavailable ranges
[ 0.572559][ T0] kasan: KernelAddressSanitizer initialized
[ 0.574027][ T0] ACPI: PM-Timer IO Port: 0xb008
[ 0.574895][ T0] ACPI: LAPIC_NMI (acpi_id[0xff] dfl dfl lint[0x1])
[ 0.575926][ T0] IOAPIC[0]: apic_id 0, version 17, address 0xfec00000, GSI 0-23
[ 0.576992][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 high level)
[ 0.578330][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
[ 0.580252][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 high level)
[ 0.581670][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 high level)
[ 0.583099][ T0] ACPI: Using ACPI (MADT) for SMP configuration information
[ 0.584396][ T0] CPU topo: Max. logical packages: 1
[ 0.585593][ T0] CPU topo: Max. logical dies: 1
[ 0.586652][ T0] CPU topo: Max. dies per package: 1
[ 0.587465][ T0] CPU topo: Max. threads per core: 2
[ 0.589467][ T0] CPU topo: Num. cores per package: 1
[ 0.590868][ T0] CPU topo: Num. threads per package: 2
[ 0.591954][ T0] CPU topo: Allowing 2 present CPUs plus 0 hotplug CPUs
[ 0.593292][ T0] PM: hibernation: Registered nosave memory: [mem 0x00000000-0x00000fff]
[ 0.595401][ T0] PM: hibernation: Registered nosave memory: [mem 0x0009f000-0x0009ffff]
[ 0.597375][ T0] PM: hibernation: Registered nosave memory: [mem 0x000a0000-0x000effff]
[ 0.599445][ T0] PM: hibernation: Registered nosave memory: [mem 0x000f0000-0x000fffff]
[ 0.601570][ T0] PM: hibernation: Registered nosave memory: [mem 0xbfffd000-0xbfffffff]
[ 0.603326][ T0] PM: hibernation: Registered nosave memory: [mem 0xc0000000-0xfffbbfff]
[ 0.605162][ T0] PM: hibernation: Registered nosave memory: [mem 0xfffbc000-0xffffffff]
[ 0.607952][ T0] [mem 0xc0000000-0xfffbbfff] available for PCI devices
[ 0.608957][ T0] Booting paravirtualized kernel on KVM
[ 0.610399][ T0] clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[ 0.708735][ T0] setup_percpu: NR_CPUS:8 nr_cpumask_bits:2 nr_cpu_ids:2 nr_node_ids:2
[ 0.710832][ T0] percpu: Embedded 74 pages/cpu s264328 r8192 d30584 u1048576
[ 0.713116][ T0] kvm-guest: PV spinlocks enabled
[ 0.713935][ T0] PV qspinlock hash table entries: 256 (order: 0, 4096 bytes, linear)
[ 0.715463][ 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 panic_on_warn
[ 0.717459][ T0] Unknown kernel command line parameters "spec_store_bypass_disable=prctl nbds_max=32 BOOT_IMAGE=/boot/bzImage", will be passed to user space.
[ 0.737329][ T0] random: crng init done
[ 0.738169][ T0] printk: log buffer data + meta data: 262144 + 917504 = 1179648 bytes
[ 0.740288][ T0] Fallback order for Node 0: 0 1
[ 0.740387][ T0] Fallback order for Node 1: 1 0
[ 0.740401][ T0] Built 2 zonelists, mobility grouping on. Total pages: 2097051
[ 0.743823][ T0] Policy zone: Normal
[ 0.745336][ T0] mem auto-init: stack:all(zero), heap alloc:on, heap free:off
[ 0.746779][ T0] stackdepot: allocating hash table via alloc_large_system_hash
[ 0.748184][ T0] stackdepot hash table entries: 1048576 (order: 12, 16777216 bytes, linear)
[ 0.755049][ T0] software IO TLB: area num 2.
[ 1.814173][ T0] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=2
[ 1.937498][ T0] allocated 167772160 bytes of page_ext
[ 1.938434][ T0] Node 0, zone DMA: page owner found early allocated 0 pages
[ 1.955033][ T0] Node 0, zone DMA32: page owner found early allocated 21222 pages
[ 1.967783][ T0] Node 0, zone Normal: page owner found early allocated 0 pages
[ 1.978514][ T0] Node 1, zone Normal: page owner found early allocated 19843 pages
[ 1.981433][ T0] Kernel/User page tables isolation: enabled
[ 1.984280][ T0] Dynamic Preempt: full
[ 1.986091][ T0] Running RCU self tests
[ 1.986862][ T0] Running RCU synchronous self tests
[ 1.987695][ T0] rcu: Preemptible hierarchical RCU implementation.
[ 1.989465][ T0] rcu: RCU lockdep checking is enabled.
[ 1.990646][ T0] rcu: RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=2.
[ 1.992022][ T0] rcu: RCU callback double-/use-after-free debug is enabled.
[ 1.993595][ T0] rcu: RCU debug extended QS entry/exit.
[ 1.994341][ T0] All grace periods are expedited (rcu_expedited).
[ 1.995499][ T0] Trampoline variant of Tasks RCU enabled.
[ 1.996475][ T0] Tracing variant of Tasks RCU enabled.
[ 1.997314][ T0] rcu: RCU calculated value of scheduler-enlistment delay is 10 jiffies.
[ 1.998691][ T0] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2
[ 1.999910][ T0] Running RCU synchronous self tests
[ 2.000677][ T0] RCU Tasks: Setting shift to 1 and lim to 1 rcu_task_cb_adjust=1 rcu_task_cpu_ids=2.
[ 2.002161][ T0] RCU Tasks Trace: Setting shift to 1 and lim to 1 rcu_task_cb_adjust=1 rcu_task_cpu_ids=2.
[ 2.109278][ T0] NR_IRQS: 4352, nr_irqs: 440, preallocated irqs: 16
[ 2.111072][ T0] rcu: srcu_init: Setting srcu_struct sizes based on contention.
[ 2.112785][ T0] kfence: initialized - using 2097152 bytes for 255 objects at 0xffff88823be00000-0xffff88823c000000
[ 2.115692][ T0] Console: colour VGA+ 80x25
[ 2.116447][ T0] printk: legacy console [ttyS0] enabled
[ 2.116447][ T0] printk: legacy console [ttyS0] enabled
[ 2.118056][ T0] printk: legacy bootconsole [earlyser0] disabled
[ 2.118056][ T0] printk: legacy bootconsole [earlyser0] disabled
[ 2.119848][ T0] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar
[ 2.121157][ T0] ... MAX_LOCKDEP_SUBCLASSES: 8
[ 2.121923][ T0] ... MAX_LOCK_DEPTH: 48
[ 2.122622][ T0] ... MAX_LOCKDEP_KEYS: 8192
[ 2.123422][ T0] ... CLASSHASH_SIZE: 4096
[ 2.124158][ T0] ... MAX_LOCKDEP_ENTRIES: 1048576
[ 2.124927][ T0] ... MAX_LOCKDEP_CHAINS: 1048576
[ 2.125694][ T0] ... CHAINHASH_SIZE: 524288
[ 2.126443][ T0] memory used by lock dependency info: 106625 kB
[ 2.127306][ T0] memory used for stack traces: 8320 kB
[ 2.128228][ T0] per task-struct memory footprint: 1920 bytes
[ 2.129337][ T0] mempolicy: Enabling automatic NUMA balancing. Configure with numa_balancing= or the kernel.numa_balancing sysctl
[ 2.131143][ T0] ACPI: Core revision 20240827
[ 2.132538][ T0] APIC: Switch to symmetric I/O mode setup
[ 2.133911][ T0] x2apic enabled
[ 2.137864][ T0] APIC: Switched APIC routing to: physical x2apic
[ 2.144384][ T0] ..TIMER: vector=0x30 apic1=0 pin1=0 apic2=-1 pin2=-1
[ 2.145766][ T0] clocksource: tsc-early: mask: 0xffffffffffffffff max_cycles: 0x1fb6dce9b83, max_idle_ns: 440795217339 ns
[ 2.147453][ T0] Calibrating delay loop (skipped) preset value.. 4400.36 BogoMIPS (lpj=22001800)
[ 2.149399][ T0] Last level iTLB entries: 4KB 64, 2MB 8, 4MB 8
[ 2.150336][ T0] Last level dTLB entries: 4KB 64, 2MB 0, 4MB 0, 1GB 4
[ 2.151465][ T0] Spectre V1 : Mitigation: usercopy/swapgs barriers and __user pointer sanitization
[ 2.157541][ T0] Spectre V2 : Spectre BHI mitigation: SW BHB clearing on syscall and VM exit
[ 2.158999][ T0] Spectre V2 : Mitigation: IBRS
[ 2.159656][ T0] Spectre V2 : Spectre v2 / SpectreRSB mitigation: Filling RSB on context switch
[ 2.161004][ T0] Spectre V2 : Spectre v2 / SpectreRSB : Filling RSB on VMEXIT
[ 2.162019][ T0] RETBleed: Mitigation: IBRS
[ 2.162682][ T0] Spectre V2 : mitigation: Enabling conditional Indirect Branch Prediction Barrier
[ 2.164084][ T0] Spectre V2 : User space: Mitigation: STIBP via prctl
[ 2.165269][ T0] Speculative Store Bypass: Mitigation: Speculative Store Bypass disabled via prctl
[ 2.166574][ T0] MDS: Mitigation: Clear CPU buffers
[ 2.167519][ T0] TAA: Mitigation: Clear CPU buffers
[ 2.168485][ T0] MMIO Stale Data: Vulnerable: Clear CPU buffers attempted, no microcode
[ 2.169873][ T0] x86/fpu: Supporting XSAVE feature 0x001: 'x87 floating point registers'
[ 2.171485][ T0] x86/fpu: Supporting XSAVE feature 0x002: 'SSE registers'
[ 2.172539][ T0] x86/fpu: Supporting XSAVE feature 0x004: 'AVX registers'
[ 2.173634][ T0] x86/fpu: xstate_offset[2]: 576, xstate_sizes[2]: 256
[ 2.174962][ T0] x86/fpu: Enabled xstate features 0x7, context size is 832 bytes, using 'standard' format.
[ 2.416184][ T0] Freeing SMP alternatives memory: 128K
[ 2.417193][ T0] pid_max: default: 32768 minimum: 301
[ 2.417838][ T0] LSM: initializing lsm=lockdown,capability,landlock,yama,safesetid,tomoyo,apparmor,bpf,ima,evm
[ 2.420044][ T0] landlock: Up and running.
[ 2.420714][ T0] Yama: becoming mindful.
[ 2.421649][ T0] TOMOYO Linux initialized
[ 2.423748][ T0] AppArmor: AppArmor initialized
[ 2.426283][ T0] LSM support for eBPF active
[ 2.432941][ T0] Dentry cache hash table entries: 1048576 (order: 11, 8388608 bytes, vmalloc hugepage)
[ 2.438372][ T0] Inode-cache hash table entries: 524288 (order: 10, 4194304 bytes, vmalloc hugepage)
[ 2.440759][ T0] Mount-cache hash table entries: 16384 (order: 5, 131072 bytes, vmalloc)
[ 2.442514][ T0] Mountpoint-cache hash table entries: 16384 (order: 5, 131072 bytes, vmalloc)
[ 2.448423][ T0] Running RCU synchronous self tests
[ 2.449646][ T0] Running RCU synchronous self tests
[ 2.571635][ T1] smpboot: CPU0: Intel(R) Xeon(R) CPU @ 2.20GHz (family: 0x6, model: 0x4f, stepping: 0x0)
[ 2.577307][ T1] Running RCU Tasks wait API self tests
[ 2.677859][ T1] Running RCU Tasks Trace wait API self tests
[ 2.679280][ T1] Performance Events: unsupported p6 CPU model 79 no PMU driver, software events only.
[ 2.680950][ T1] signal: max sigframe size: 1776
[ 2.682453][ T1] rcu: Hierarchical SRCU implementation.
[ 2.683340][ T1] rcu: Max phase no-delay instances is 1000.
[ 2.685280][ T1] Timer migration: 1 hierarchy levels; 8 children per group; 0 crossnode level
[ 2.691712][ T1] NMI watchdog: Perf NMI watchdog permanently disabled
[ 2.693635][ T1] smp: Bringing up secondary CPUs ...
[ 2.696765][ T1] smpboot: x86: Booting SMP configuration:
[ 2.697538][ T1] .... node #0, CPUs: #1
[ 2.697744][ T15] Callback from call_rcu_tasks_trace() invoked.
[ 2.700940][ T22] ------------[ cut here ]------------
[ 2.700940][ T22] workqueue: work disable count underflowed
[ 2.700940][ T22] WARNING: CPU: 1 PID: 22 at kernel/workqueue.c:4317 enable_work+0x34d/0x360
[ 2.700940][ T22] Modules linked in:
[ 2.701431][ T22] CPU: 1 UID: 0 PID: 22 Comm: cpuhp/1 Not tainted 6.13.0-rc5-next-20250106-syzkaller-g4e16367cfe0c #0
[ 2.703579][ T22] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
[ 2.705285][ T22] RIP: 0010:enable_work+0x34d/0x360
[ 2.706172][ T22] Code: d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc e8 08 69 37 00 c6 05 e3 0b 7d 0e 01 90 48 c7 c7 80 d7 09 8c e8 74 23 f8 ff 90 <0f> 0b 90 90 e9 56 ff ff ff e8 a5 6a 6a 0a 0f 1f 44 00 00 90 90 90
[ 2.707436][ T22] RSP: 0000:ffffc900001c7b20 EFLAGS: 00010046
[ 2.707436][ T22] RAX: 3b76ae2cfe35ec00 RBX: 0000000000000000 RCX: ffff88801cee3c00
[ 2.707436][ T22] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[ 2.707436][ T22] RBP: ffffc900001c7be8 R08: ffffffff817ff732 R09: 1ffffffff1cfa188
[ 2.707436][ T22] R10: dffffc0000000000 R11: fffffbfff1cfa189 R12: 1ffff92000038f68
[ 2.707436][ T22] R13: 1ffff92000038f70 R14: 001fffffffc00001 R15: ffff8880b87383f0
[ 2.707436][ T22] FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
[ 2.707436][ T22] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2.707436][ T22] CR2: 0000000000000000 CR3: 000000000e736000 CR4: 00000000003506f0
[ 2.707436][ T22] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2.707436][ T22] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2.707436][ T22] Call Trace:
[ 2.707436][ T22]
[ 2.707436][ T22] ? __warn+0x165/0x4d0
[ 2.707436][ T22] ? enable_work+0x34d/0x360
[ 2.707436][ T22] ? report_bug+0x2b3/0x500
[ 2.707436][ T22] ? enable_work+0x34d/0x360
[ 2.707436][ T22] ? handle_bug+0x60/0x90
[ 2.707436][ T22] ? exc_invalid_op+0x1a/0x50
[ 2.707436][ T22] ? asm_exc_invalid_op+0x1a/0x20
[ 2.707436][ T22] ? __warn_printk+0x292/0x360
[ 2.707436][ T22] ? enable_work+0x34d/0x360
[ 2.707436][ T22] ? __pfx_enable_work+0x10/0x10
[ 2.707436][ T22] ? __pfx_vmstat_cpu_online+0x10/0x10
[ 2.707436][ T22] ? rcu_is_watching+0x15/0xb0
[ 2.707436][ T22] vmstat_cpu_online+0xbb/0xe0
[ 2.707436][ T22] ? __pfx_vmstat_cpu_online+0x10/0x10
[ 2.707436][ T22] cpuhp_invoke_callback+0x48d/0x830
[ 2.707436][ T22] ? __pfx_vmstat_cpu_online+0x10/0x10
[ 2.707436][ T22] cpuhp_thread_fun+0x41c/0x810
[ 2.707436][ T22] ? cpuhp_thread_fun+0x130/0x810
[ 2.707436][ T22] ? __pfx_cpuhp_thread_fun+0x10/0x10
[ 2.707436][ T22] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 2.707436][ T22] ? __pfx_cpuhp_thread_fun+0x10/0x10
[ 2.707436][ T22] smpboot_thread_fn+0x544/0xa30
[ 2.707436][ T22] ? smpboot_thread_fn+0x4e/0xa30
[ 2.707436][ T22] ? __pfx_smpboot_thread_fn+0x10/0x10
[ 2.707436][ T22] kthread+0x7a9/0x920
[ 2.707436][ T22] ? __pfx_kthread+0x10/0x10
[ 2.707436][ T22] ? __pfx_smpboot_thread_fn+0x10/0x10
[ 2.707436][ T22] ? __pfx_kthread+0x10/0x10
[ 2.707436][ T22] ? __pfx_kthread+0x10/0x10
[ 2.707436][ T22] ? __pfx_kthread+0x10/0x10
[ 2.707436][ T22] ? _raw_spin_unlock_irq+0x23/0x50
[ 2.707436][ T22] ? lockdep_hardirqs_on+0x99/0x150
[ 2.707436][ T22] ? __pfx_kthread+0x10/0x10
[ 2.707436][ T22] ret_from_fork+0x4b/0x80
[ 2.707436][ T22] ? __pfx_kthread+0x10/0x10
[ 2.707436][ T22] ret_from_fork_asm+0x1a/0x30
[ 2.707436][ T22]
[ 2.707436][ T22] Kernel panic - not syncing: kernel: panic_on_warn set ...
[ 2.707436][ T22] CPU: 1 UID: 0 PID: 22 Comm: cpuhp/1 Not tainted 6.13.0-rc5-next-20250106-syzkaller-g4e16367cfe0c #0
[ 2.707436][ T22] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
[ 2.707436][ T22] Call Trace:
[ 2.707436][ T22]
[ 2.707436][ T22] dump_stack_lvl+0x241/0x360
[ 2.707436][ T22] ? __pfx_dump_stack_lvl+0x10/0x10
[ 2.707436][ T22] ? __pfx__printk+0x10/0x10
[ 2.707436][ T22] ? _printk+0xd5/0x120
[ 2.707436][ T22] ? __init_begin+0x41000/0x41000
[ 2.707436][ T22] ? vscnprintf+0x5d/0x90
[ 2.707436][ T22] panic+0x349/0x880
[ 2.707436][ T22] ? __warn+0x174/0x4d0
[ 2.707436][ T22] ? __pfx_panic+0x10/0x10
[ 2.707436][ T22] ? ret_from_fork_asm+0x1a/0x30
[ 2.707436][ T22] __warn+0x344/0x4d0
[ 2.707436][ T22] ? enable_work+0x34d/0x360
[ 2.707436][ T22] report_bug+0x2b3/0x500
[ 2.707436][ T22] ? enable_work+0x34d/0x360
[ 2.707436][ T22] handle_bug+0x60/0x90
[ 2.707436][ T22] exc_invalid_op+0x1a/0x50
[ 2.707436][ T22] asm_exc_invalid_op+0x1a/0x20
[ 2.707436][ T22] RIP: 0010:enable_work+0x34d/0x360
[ 2.707436][ T22] Code: d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc e8 08 69 37 00 c6 05 e3 0b 7d 0e 01 90 48 c7 c7 80 d7 09 8c e8 74 23 f8 ff 90 <0f> 0b 90 90 e9 56 ff ff ff e8 a5 6a 6a 0a 0f 1f 44 00 00 90 90 90
[ 2.707436][ T22] RSP: 0000:ffffc900001c7b20 EFLAGS: 00010046
[ 2.707436][ T22] RAX: 3b76ae2cfe35ec00 RBX: 0000000000000000 RCX: ffff88801cee3c00
[ 2.707436][ T22] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[ 2.707436][ T22] RBP: ffffc900001c7be8 R08: ffffffff817ff732 R09: 1ffffffff1cfa188
[ 2.707436][ T22] R10: dffffc0000000000 R11: fffffbfff1cfa189 R12: 1ffff92000038f68
[ 2.707436][ T22] R13: 1ffff92000038f70 R14: 001fffffffc00001 R15: ffff8880b87383f0
[ 2.707436][ T22] ? __warn_printk+0x292/0x360
[ 2.707436][ T22] ? __pfx_enable_work+0x10/0x10
[ 2.707436][ T22] ? __pfx_vmstat_cpu_online+0x10/0x10
[ 2.707436][ T22] ? rcu_is_watching+0x15/0xb0
[ 2.707436][ T22] vmstat_cpu_online+0xbb/0xe0
[ 2.707436][ T22] ? __pfx_vmstat_cpu_online+0x10/0x10
[ 2.707436][ T22] cpuhp_invoke_callback+0x48d/0x830
[ 2.707436][ T22] ? __pfx_vmstat_cpu_online+0x10/0x10
[ 2.707436][ T22] cpuhp_thread_fun+0x41c/0x810
[ 2.707436][ T22] ? cpuhp_thread_fun+0x130/0x810
[ 2.707436][ T22] ? __pfx_cpuhp_thread_fun+0x10/0x10
[ 2.707436][ T22] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 2.707436][ T22] ? __pfx_cpuhp_thread_fun+0x10/0x10
[ 2.707436][ T22] smpboot_thread_fn+0x544/0xa30
[ 2.707436][ T22] ? smpboot_thread_fn+0x4e/0xa30
[ 2.707436][ T22] ? __pfx_smpboot_thread_fn+0x10/0x10
[ 2.707436][ T22] kthread+0x7a9/0x920
[ 2.707436][ T22] ? __pfx_kthread+0x10/0x10
[ 2.707436][ T22] ? __pfx_smpboot_thread_fn+0x10/0x10
[ 2.707436][ T22] ? __pfx_kthread+0x10/0x10
[ 2.707436][ T22] ? __pfx_kthread+0x10/0x10
[ 2.707436][ T22] ? __pfx_kthread+0x10/0x10
[ 2.707436][ T22] ? _raw_spin_unlock_irq+0x23/0x50
[ 2.707436][ T22] ? lockdep_hardirqs_on+0x99/0x150
[ 2.707436][ T22] ? __pfx_kthread+0x10/0x10
[ 2.707436][ T22] ret_from_fork+0x4b/0x80
[ 2.707436][ T22] ? __pfx_kthread+0x10/0x10
[ 2.707436][ T22] ret_from_fork_asm+0x1a/0x30
[ 2.707436][ T22]
[ 2.707436][ T22] Rebooting in 86400 seconds..
syzkaller build log:
go env (err=)
GO111MODULE='auto'
GOARCH='amd64'
GOBIN=''
GOCACHE='/syzkaller/.cache/go-build'
GOENV='/syzkaller/.config/go/env'
GOEXE=''
GOEXPERIMENT=''
GOFLAGS=''
GOHOSTARCH='amd64'
GOHOSTOS='linux'
GOINSECURE=''
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'
GOTMPDIR=''
GOTOOLCHAIN='auto'
GOTOOLDIR='/usr/local/go/pkg/tool/linux_amd64'
GOVCS=''
GOVERSION='go1.22.7'
GCCGO='gccgo'
GOAMD64='v1'
AR='ar'
CC='gcc'
CXX='g++'
CGO_ENABLED='1'
GOMOD='/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/go.mod'
GOWORK=''
CGO_CFLAGS='-O2 -g'
CGO_CPPFLAGS=''
CGO_CXXFLAGS='-O2 -g'
CGO_FFLAGS='-O2 -g'
CGO_LDFLAGS='-O2 -g'
PKG_CONFIG='pkg-config'
GOGCCFLAGS='-fPIC -m64 -pthread -Wl,--no-gc-sections -fmessage-length=0 -ffile-prefix-map=/tmp/go-build3183305353=/tmp/go-build -gno-record-gcc-switches'
git status (err=)
HEAD detached at 071779164
nothing to commit, working tree clean
go list -f '{{.Stale}}' ./sys/syz-sysgen | grep -q false || go install ./sys/syz-sysgen
make .descriptions
bin/syz-sysgen
touch .descriptions
GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=071779164d7640bc97cdb04864e59dbb91db6469 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20220826-175704'" "-tags=syz_target syz_os_linux syz_arch_amd64 " -o ./bin/linux_amd64/syz-fuzzer github.com/google/syzkaller/syz-fuzzer
GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=071779164d7640bc97cdb04864e59dbb91db6469 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20220826-175704'" "-tags=syz_target syz_os_linux syz_arch_amd64 " -o ./bin/linux_amd64/syz-execprog github.com/google/syzkaller/tools/syz-execprog
GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=071779164d7640bc97cdb04864e59dbb91db6469 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20220826-175704'" "-tags=syz_target syz_os_linux syz_arch_amd64 " -o ./bin/linux_amd64/syz-stress github.com/google/syzkaller/tools/syz-stress
mkdir -p ./bin/linux_amd64
gcc -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 -static-pie -fpermissive -w -DGOOS_linux=1 -DGOARCH_amd64=1 \
-DHOSTGOOS_linux=1 -DGIT_REVISION=\"071779164d7640bc97cdb04864e59dbb91db6469\"