WARNING in tmigr_cpu_prepare
smpboot: CPU0: Intel(R) Xeon(R) CPU @ 2.20GHz (family: 0x6, model: 0x4f, stepping: 0x0)
Running RCU Tasks wait API self tests
Running RCU Tasks Trace wait API self tests
Performance Events: unsupported p6 CPU model 79 no PMU driver, software events only.
signal: max sigframe size: 1776
rcu: Hierarchical SRCU implementation.
rcu: Max phase no-delay instances is 1000.
Timer migration: 1 hierarchy levels; 8 children per group; 0 crossnode level
------------[ cut here ]------------
WARNING: CPU: 0 PID: 1 at kernel/time/timer_migration.c:1714 tmigr_cpu_prepare+0x10e4/0x1330 kernel/time/timer_migration.c:1714
Modules linked in:
CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.10.0-next-20240723-syzkaller-13569-g2347b4c79f5e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
RIP: 0010:tmigr_cpu_prepare+0x10e4/0x1330 kernel/time/timer_migration.c:1714
Code: 0d 00 e9 41 fe ff ff e8 ea d3 0d 00 e9 37 fe ff ff 80 3d 81 ea 13 0e 01 75 26 e8 d7 d3 0d 00 e9 24 fe ff ff e8 cd d3 0d 00 90 <0f> 0b 90 e9 a8 ef ff ff e8 bf d3 0d 00 90 0f 0b 90 e9 6e ff ff ff
RSP: 0000:ffffc900000676f0 EFLAGS: 00010293
RAX: ffffffff8185f723 RBX: 0000000000000000 RCX: ffff8880172a8000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff8880b942d2a0 R08: ffffffff8185e6c6 R09: 1ffffffff1f5f34d
R10: dffffc0000000000 R11: ffffffff8185e640 R12: dffffc0000000000
R13: 0000000000000040 R14: 0000000000000000 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff88823ffff000 CR3: 000000000e134000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
cpuhp_invoke_callback+0x48d/0x830 kernel/cpu.c:194
cpuhp_issue_call+0x46f/0x7e0
__cpuhp_setup_state_cpuslocked+0x464/0x730 kernel/cpu.c:2505
__cpuhp_setup_state+0x3f/0x60 kernel/cpu.c:2534
cpuhp_setup_state include/linux/cpuhotplug.h:277 [inline]
tmigr_init+0x231/0x2a0 kernel/time/timer_migration.c:1794
do_one_initcall+0x248/0x880 init/main.c:1267
do_pre_smp_initcalls+0x57/0xa0 init/main.c:1373
kernel_init_freeable+0x40d/0x5d0 init/main.c:1567
kernel_init+0x1d/0x2b0 init/main.c:1467
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:144
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@10.128.0.173" "pwd"]: exit status 255
ssh: connect to host 10.128.0.173 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.
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 e758ef56-42d4-f37a-8983-cd929e7d1704
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 6.10.0-next-20240723-syzkaller-13569-g2347b4c79f5e (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 06/27/2024
[ 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 4663135016 cycles
[ 0.001019][ T0] clocksource: kvm-clock: mask: 0xffffffffffffffff max_cycles: 0x1cd42e4dffb, max_idle_ns: 881590591483 ns
[ 0.004228][ T0] tsc: Detected 2200.226 MHz processor
[ 0.009147][ T0] last_pfn = 0x240000 max_arch_pfn = 0x400000000
[ 0.010185][ T0] MTRR map: 4 entries (3 fixed + 1 variable; max 19), built from 8 variable MTRRs
[ 0.011667][ T0] x86/PAT: Configuration [0-7]: WB WC UC- UC WB WP UC- WT
[ 0.012759][ T0] last_pfn = 0xbfffd max_arch_pfn = 0x400000000
[ 0.020248][ T0] found SMP MP-table at [mem 0x000f2a50-0x000f2serialport: Connected to syzkaller.us-central1-c.ci-upstream-linux-next-kasan-gce-root-test-job-parallel-2 port 1 (session ID: b2a546fbf8e63f18c32c1f1a4beead2835de6cdf352ddfacd374e0de45a00f14, active connections: 1).
a5f]
[ 0.021243][ T0] Using GB pages for direct mapping
[ 0.025764][ T0] ACPI: Early table checksum verification disabled
[ 0.026675][ T0] ACPI: RSDP 0x00000000000F27D0 000014 (v00 Google)
[ 0.027778][ T0] ACPI: RSDT 0x00000000BFFFFFA0 000038 (v01 Google GOOGRSDT 00000001 GOOG 00000001)
[ 0.029093][ T0] ACPI: FACP 0x00000000BFFFF330 0000F4 (v02 Google GOOGFACP 00000001 GOOG 00000001)
[ 0.030358][ T0] ACPI: DSDT 0x00000000BFFFD8C0 001A64 (v01 Google GOOGDSDT 00000001 GOOG 00000001)
[ 0.031578][ T0] ACPI: FACS 0x00000000BFFFD880 000040
[ 0.032307][ T0] ACPI: FACS 0x00000000BFFFD880 000040
[ 0.033045][ T0] ACPI: SRAT 0x00000000BFFFFE60 0000C8 (v03 Google GOOGSRAT 00000001 GOOG 00000001)
[ 0.034363][ T0] ACPI: APIC 0x00000000BFFFFDB0 000076 (v05 Google GOOGAPIC 00000001 GOOG 00000001)
[ 0.035967][ T0] ACPI: SSDT 0x00000000BFFFF430 000980 (v01 Google GOOGSSDT 00000001 GOOG 00000001)
[ 0.037983][ T0] ACPI: WAET 0x00000000BFFFFE30 000028 (v01 Google GOOGWAET 00000001 GOOG 00000001)
[ 0.039744][ T0] ACPI: Reserving FACP table memory at [mem 0xbffff330-0xbffff423]
[ 0.041814][ T0] ACPI: Reserving DSDT table memory at [mem 0xbfffd8c0-0xbffff323]
[ 0.043709][ T0] ACPI: Reserving FACS table memory at [mem 0xbfffd880-0xbfffd8bf]
[ 0.046259][ T0] ACPI: Reserving FACS table memory at [mem 0xbfffd880-0xbfffd8bf]
[ 0.047830][ T0] ACPI: Reserving SRAT table memory at [mem 0xbffffe60-0xbfffff27]
[ 0.049404][ T0] ACPI: Reserving APIC table memory at [mem 0xbffffdb0-0xbffffe25]
[ 0.050543][ T0] ACPI: Reserving SSDT table memory at [mem 0xbffff430-0xbffffdaf]
[ 0.051903][ T0] ACPI: Reserving WAET table memory at [mem 0xbffffe30-0xbffffe57]
[ 0.053057][ T0] SRAT: PXM 0 -> APIC 0x00 -> Node 0
[ 0.053745][ T0] SRAT: PXM 0 -> APIC 0x01 -> Node 0
[ 0.054727][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x00000000-0x0009ffff]
[ 0.056060][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x00100000-0xbfffffff]
[ 0.057095][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x100000000-0x23fffffff]
[ 0.058111][ T0] NUMA: Node 0 [mem 0x00000000-0x0009ffff] + [mem 0x00100000-0xbfffffff] -> [mem 0x00000000-0xbfffffff]
[ 0.059854][ T0] NUMA: Node 0 [mem 0x00000000-0xbfffffff] + [mem 0x100000000-0x23fffffff] -> [mem 0x00000000-0x23fffffff]
[ 0.061815][ T0] Faking node 0 at [mem 0x0000000000000000-0x000000013fffffff] (5120MB)
[ 0.062988][ T0] Faking node 1 at [mem 0x0000000140000000-0x000000023fffffff] (4096MB)
[ 0.064528][ T0] NODE_DATA(0) allocated [mem 0x13fffa000-0x13fffffff]
[ 0.066662][ T0] NODE_DATA(1) allocated [mem 0x23fff7000-0x23fffcfff]
[ 0.108034][ T0] Zone ranges:
[ 0.108990][ T0] DMA [mem 0x0000000000001000-0x0000000000ffffff]
[ 0.110500][ T0] DMA32 [mem 0x0000000001000000-0x00000000ffffffff]
[ 0.111706][ T0] Normal [mem 0x0000000100000000-0x000000023fffffff]
[ 0.113004][ T0] Device empty
[ 0.113800][ T0] Movable zone start for each node
[ 0.114630][ T0] Early memory node ranges
[ 0.115252][ T0] node 0: [mem 0x0000000000001000-0x000000000009efff]
[ 0.116456][ T0] node 0: [mem 0x0000000000100000-0x00000000bfffcfff]
[ 0.117962][ T0] node 0: [mem 0x0000000100000000-0x000000013fffffff]
[ 0.118897][ T0] node 1: [mem 0x0000000140000000-0x000000023fffffff]
[ 0.119935][ T0] Initmem setup node 0 [mem 0x0000000000001000-0x000000013fffffff]
[ 0.121010][ T0] Initmem setup node 1 [mem 0x0000000140000000-0x000000023fffffff]
[ 0.122085][ T0] On node 0, zone DMA: 1 pages in unavailable ranges
[ 0.123240][ T0] On node 0, zone DMA: 97 pages in unavailable ranges
[ 0.191463][ T0] On node 0, zone Normal: 3 pages in unavailable ranges
[ 0.571209][ T0] kasan: KernelAddressSanitizer initialized
[ 0.572957][ T0] ACPI: PM-Timer IO Port: 0xb008
[ 0.573915][ T0] ACPI: LAPIC_NMI (acpi_id[0xff] dfl dfl lint[0x1])
[ 0.575071][ T0] IOAPIC[0]: apic_id 0, version 17, address 0xfec00000, GSI 0-23
[ 0.576315][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 high level)
[ 0.577426][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
[ 0.579259][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 high level)
[ 0.580742][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 high level)
[ 0.581882][ T0] ACPI: Using ACPI (MADT) for SMP configuration information
[ 0.583088][ T0] CPU topo: Max. logical packages: 1
[ 0.583985][ T0] CPU topo: Max. logical dies: 1
[ 0.585392][ T0] CPU topo: Max. dies per package: 1
[ 0.586304][ T0] CPU topo: Max. threads per core: 2
[ 0.587207][ T0] CPU topo: Num. cores per package: 1
[ 0.588086][ T0] CPU topo: Num. threads per package: 2
[ 0.589277][ T0] CPU topo: Allowing 2 present CPUs plus 0 hotplug CPUs
[ 0.591315][ T0] PM: hibernation: Registered nosave memory: [mem 0x00000000-0x00000fff]
[ 0.593279][ T0] PM: hibernation: Registered nosave memory: [mem 0x0009f000-0x0009ffff]
[ 0.594793][ T0] PM: hibernation: Registered nosave memory: [mem 0x000a0000-0x000effff]
[ 0.596037][ T0] PM: hibernation: Registered nosave memory: [mem 0x000f0000-0x000fffff]
[ 0.597552][ T0] PM: hibernation: Registered nosave memory: [mem 0xbfffd000-0xbfffffff]
[ 0.598852][ T0] PM: hibernation: Registered nosave memory: [mem 0xc0000000-0xfffbbfff]
[ 0.600215][ T0] PM: hibernation: Registered nosave memory: [mem 0xfffbc000-0xffffffff]
[ 0.601641][ T0] [mem 0xc0000000-0xfffbbfff] available for PCI devices
[ 0.603009][ T0] Booting paravirtualized kernel on KVM
[ 0.603799][ T0] clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[ 0.749147][ T0] setup_percpu: NR_CPUS:8 nr_cpumask_bits:2 nr_cpu_ids:2 nr_node_ids:2
[ 0.751373][ T0] percpu: Embedded 74 pages/cpu s264328 r8192 d30584 u1048576
[ 0.752793][ T0] kvm-guest: PV spinlocks enabled
[ 0.753552][ T0] PV qspinlock hash table entries: 256 (order: 0, 4096 bytes, linear)
[ 0.754674][ 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=16 vivid.multiplanar=1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2 netrom.nr_ndevs=16 rose.rose_ndevs=16 smp.csd_lock_timeout=100000 watchdog_thresh=55 workqueue.watchdog_thresh=140 sysctl.net.core.netdev_unregister_timeout_secs=140 dummy_hcd.num=8 panic_on_warn=1 BOOT_IMAGE=/boot/bzImage root=/dev/sda1 console=ttyS0
[ 0.768898][ T0] Unknown kernel command line parameters "spec_store_bypass_disable=prctl BOOT_IMAGE=/boot/bzImage", will be passed to user space.
[ 0.770811][ T0] random: crng init done
[ 0.771696][ T0] Fallback order for Node 0: 0 1
[ 0.771790][ T0] Fallback order for Node 1: 1 0
[ 0.771803][ T0] Built 2 zonelists, mobility grouping on. Total pages: 2097051
[ 0.775879][ T0] Policy zone: Normal
[ 0.777407][ T0] mem auto-init: stack:all(zero), heap alloc:on, heap free:off
[ 0.778937][ T0] stackdepot: allocating hash table via alloc_large_system_hash
[ 0.779975][ T0] stackdepot hash table entries: 1048576 (order: 12, 16777216 bytes, linear)
[ 0.785985][ T0] software IO TLB: area num 2.
[ 1.895672][ T0] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=2
[ 2.021331][ T0] allocated 167772160 bytes of page_ext
[ 2.022572][ T0] Node 0, zone DMA: page owner found early allocated 0 pages
[ 2.038637][ T0] Node 0, zone DMA32: page owner found early allocated 20582 pages
[ 2.051951][ T0] Node 0, zone Normal: page owner found early allocated 0 pages
[ 2.063543][ T0] Node 1, zone Normal: page owner found early allocated 20483 pages
[ 2.065759][ T0] Kernel/User page tables isolation: enabled
[ 2.068174][ T0] Dynamic Preempt: full
[ 2.070410][ T0] Running RCU self tests
[ 2.071462][ T0] Running RCU synchronous self tests
[ 2.072685][ T0] rcu: Preemptible hierarchical RCU implementation.
[ 2.073967][ T0] rcu: RCU lockdep checking is enabled.
[ 2.075273][ T0] rcu: RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=2.
[ 2.077359][ T0] rcu: RCU callback double-/use-after-free debug is enabled.
[ 2.079232][ T0] rcu: RCU debug extended QS entry/exit.
[ 2.080494][ T0] All grace periods are expedited (rcu_expedited).
[ 2.081578][ T0] Trampoline variant of Tasks RCU enabled.
[ 2.082531][ T0] Tracing variant of Tasks RCU enabled.
[ 2.083732][ T0] rcu: RCU calculated value of scheduler-enlistment delay is 10 jiffies.
[ 2.084904][ T0] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2
[ 2.086100][ T0] Running RCU synchronous self tests
[ 2.086795][ T0] RCU Tasks: Setting shift to 1 and lim to 1 rcu_task_cb_adjust=1.
[ 2.087840][ T0] RCU Tasks Trace: Setting shift to 1 and lim to 1 rcu_task_cb_adjust=1.
[ 2.191477][ T0] NR_IRQS: 4352, nr_irqs: 440, preallocated irqs: 16
[ 2.193734][ T0] rcu: srcu_init: Setting srcu_struct sizes based on contention.
[ 2.195308][ T0] kfence: initialized - using 2097152 bytes for 255 objects at 0xffff88823bc00000-0xffff88823be00000
[ 2.198062][ T0] Console: colour VGA+ 80x25
[ 2.198872][ T0] printk: legacy console [ttyS0] enabled
[ 2.198872][ T0] printk: legacy console [ttyS0] enabled
[ 2.200698][ T0] printk: legacy bootconsole [earlyser0] disabled
[ 2.200698][ T0] printk: legacy bootconsole [earlyser0] disabled
[ 2.202852][ T0] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar
[ 2.204204][ T0] ... MAX_LOCKDEP_SUBCLASSES: 8
[ 2.204934][ T0] ... MAX_LOCK_DEPTH: 48
[ 2.206012][ T0] ... MAX_LOCKDEP_KEYS: 8192
[ 2.206924][ T0] ... CLASSHASH_SIZE: 4096
[ 2.207619][ T0] ... MAX_LOCKDEP_ENTRIES: 131072
[ 2.208338][ T0] ... MAX_LOCKDEP_CHAINS: 262144
[ 2.209059][ T0] ... CHAINHASH_SIZE: 131072
[ 2.209815][ T0] memory used by lock dependency info: 20721 kB
[ 2.210806][ T0] memory used for stack traces: 8320 kB
[ 2.211644][ T0] per task-struct memory footprint: 1920 bytes
[ 2.212978][ T0] mempolicy: Enabling automatic NUMA balancing. Configure with numa_balancing= or the kernel.numa_balancing sysctl
[ 2.215065][ T0] ACPI: Core revision 20240322
[ 2.216781][ T0] APIC: Switch to symmetric I/O mode setup
[ 2.218212][ T0] x2apic enabled
[ 2.222378][ T0] APIC: Switched APIC routing to: physical x2apic
[ 2.229132][ T0] ..TIMER: vector=0x30 apic1=0 pin1=0 apic2=-1 pin2=-1
[ 2.230636][ T0] clocksource: tsc-early: mask: 0xffffffffffffffff max_cycles: 0x1fb7086095e, max_idle_ns: 440795277026 ns
[ 2.232505][ T0] Calibrating delay loop (skipped) preset value.. 4400.45 BogoMIPS (lpj=22002260)
[ 2.234901][ T0] Last level iTLB entries: 4KB 64, 2MB 8, 4MB 8
[ 2.235912][ T0] Last level dTLB entries: 4KB 64, 2MB 0, 4MB 0, 1GB 4
[ 2.242567][ T0] Spectre V1 : Mitigation: usercopy/swapgs barriers and __user pointer sanitization
[ 2.244141][ T0] Spectre V2 : Spectre BHI mitigation: SW BHB clearing on syscall and VM exit
[ 2.245543][ T0] Spectre V2 : Mitigation: IBRS
[ 2.246294][ T0] Spectre V2 : Spectre v2 / SpectreRSB mitigation: Filling RSB on context switch
[ 2.247931][ T0] Spectre V2 : Spectre v2 / SpectreRSB : Filling RSB on VMEXIT
[ 2.248990][ T0] RETBleed: Mitigation: IBRS
[ 2.249739][ T0] Spectre V2 : mitigation: Enabling conditional Indirect Branch Prediction Barrier
[ 2.251078][ T0] Spectre V2 : User space: Mitigation: STIBP via prctl
[ 2.252709][ T0] Speculative Store Bypass: Mitigation: Speculative Store Bypass disabled via prctl
[ 2.254014][ T0] MDS: Mitigation: Clear CPU buffers
[ 2.255077][ T0] TAA: Mitigation: Clear CPU buffers
[ 2.255924][ T0] MMIO Stale Data: Vulnerable: Clear CPU buffers attempted, no microcode
[ 2.257423][ T0] x86/fpu: Supporting XSAVE feature 0x001: 'x87 floating point registers'
[ 2.258639][ T0] x86/fpu: Supporting XSAVE feature 0x002: 'SSE registers'
[ 2.259743][ T0] x86/fpu: Supporting XSAVE feature 0x004: 'AVX registers'
[ 2.260753][ T0] x86/fpu: xstate_offset[2]: 576, xstate_sizes[2]: 256
[ 2.261733][ T0] x86/fpu: Enabled xstate features 0x7, context size is 832 bytes, using 'standard' format.
[ 2.500160][ T0] Freeing SMP alternatives memory: 128K
[ 2.501055][ T0] pid_max: default: 32768 minimum: 301
[ 2.502378][ T0] LSM: initializing lsm=lockdown,capability,landlock,yama,safesetid,tomoyo,apparmor,bpf,ima,evm
[ 2.504154][ T0] landlock: Up and running.
[ 2.504790][ T0] Yama: becoming mindful.
[ 2.505556][ T0] TOMOYO Linux initialized
[ 2.506652][ T0] AppArmor: AppArmor initialized
[ 2.507430][ T0] LSM support for eBPF active
[ 2.514120][ T0] Dentry cache hash table entries: 1048576 (order: 11, 8388608 bytes, vmalloc hugepage)
[ 2.518520][ T0] Inode-cache hash table entries: 524288 (order: 10, 4194304 bytes, vmalloc hugepage)
[ 2.520622][ T0] Mount-cache hash table entries: 16384 (order: 5, 131072 bytes, vmalloc)
[ 2.522886][ T0] Mountpoint-cache hash table entries: 16384 (order: 5, 131072 bytes, vmalloc)
[ 2.529564][ T0] Running RCU synchronous self tests
[ 2.530444][ T0] Running RCU synchronous self tests
[ 2.652785][ T1] smpboot: CPU0: Intel(R) Xeon(R) CPU @ 2.20GHz (family: 0x6, model: 0x4f, stepping: 0x0)
[ 2.659697][ T1] Running RCU Tasks wait API self tests
[ 2.762970][ T1] Running RCU Tasks Trace wait API self tests
[ 2.764684][ T1] Performance Events: unsupported p6 CPU model 79 no PMU driver, software events only.
[ 2.767013][ T1] signal: max sigframe size: 1776
[ 2.768794][ T1] rcu: Hierarchical SRCU implementation.
[ 2.770453][ T1] rcu: Max phase no-delay instances is 1000.
[ 2.772912][ T1] Timer migration: 1 hierarchy levels; 8 children per group; 0 crossnode level
[ 2.774659][ T1] ------------[ cut here ]------------
[ 2.775899][ T1] WARNING: CPU: 0 PID: 1 at kernel/time/timer_migration.c:1714 tmigr_cpu_prepare+0x10e4/0x1330
[ 2.775925][ T1] Modules linked in:
[ 2.775934][ T1] CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.10.0-next-20240723-syzkaller-13569-g2347b4c79f5e #0
[ 2.775949][ T1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
[ 2.775955][ T1] RIP: 0010:tmigr_cpu_prepare+0x10e4/0x1330
[ 2.775968][ T1] Code: 0d 00 e9 41 fe ff ff e8 ea d3 0d 00 e9 37 fe ff ff 80 3d 81 ea 13 0e 01 75 26 e8 d7 d3 0d 00 e9 24 fe ff ff e8 cd d3 0d 00 90 <0f> 0b 90 e9 a8 ef ff ff e8 bf d3 0d 00 90 0f 0b 90 e9 6e ff ff ff
[ 2.775976][ T1] RSP: 0000:ffffc900000676f0 EFLAGS: 00010293
[ 2.775984][ T1] RAX: ffffffff8185f723 RBX: 0000000000000000 RCX: ffff8880172a8000
[ 2.775991][ T1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[ 2.775997][ T1] RBP: ffff8880b942d2a0 R08: ffffffff8185e6c6 R09: 1ffffffff1f5f34d
[ 2.776010][ T1] R10: dffffc0000000000 R11: ffffffff8185e640 R12: dffffc0000000000
[ 2.776017][ T1] R13: 0000000000000040 R14: 0000000000000000 R15: 0000000000000000
[ 2.776036][ T1] FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
[ 2.776044][ T1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2.776051][ T1] CR2: ffff88823ffff000 CR3: 000000000e134000 CR4: 00000000003506f0
[ 2.776063][ T1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2.776069][ T1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2.776079][ T1] Call Trace:
[ 2.776084][ T1]
[ 2.776090][ T1] ? __warn+0x168/0x4e0
[ 2.776106][ T1] ? tmigr_cpu_prepare+0x10e4/0x1330
[ 2.776119][ T1] ? report_bug+0x2b3/0x500
[ 2.776133][ T1] ? tmigr_cpu_prepare+0x10e4/0x1330
[ 2.776146][ T1] ? handle_bug+0x3e/0x70
[ 2.776156][ T1] ? exc_invalid_op+0x1a/0x50
[ 2.776165][ T1] ? asm_exc_invalid_op+0x1a/0x20
[ 2.776179][ T1] ? __pfx_tmigr_cpu_prepare+0x10/0x10
[ 2.776190][ T1] ? tmigr_cpu_prepare+0x86/0x1330
[ 2.776200][ T1] ? tmigr_cpu_prepare+0x10e3/0x1330
[ 2.776211][ T1] ? tmigr_cpu_prepare+0x10e4/0x1330
[ 2.776223][ T1] ? __pfx___mutex_trylock_common+0x10/0x10
[ 2.776236][ T1] ? __pfx_tmigr_cpu_prepare+0x10/0x10
[ 2.776246][ T1] ? rcu_is_watching+0x15/0xb0
[ 2.776259][ T1] ? trace_cpuhp_enter+0x94/0x210
[ 2.776272][ T1] ? __pfx_tmigr_cpu_prepare+0x10/0x10
[ 2.776284][ T1] cpuhp_invoke_callback+0x48d/0x830
[ 2.776305][ T1] ? __pfx_tmigr_cpu_prepare+0x10/0x10
[ 2.776316][ T1] ? __cpuhp_setup_state_cpuslocked+0xf9/0x730
[ 2.776332][ T1] cpuhp_issue_call+0x46f/0x7e0
[ 2.776347][ T1] ? __pfx_tmigr_cpu_prepare+0x10/0x10
[ 2.776359][ T1] ? rcu_read_lock_any_held+0xb7/0x160
[ 2.776370][ T1] ? __pfx_rcu_read_lock_any_held+0x10/0x10
[ 2.776382][ T1] __cpuhp_setup_state_cpuslocked+0x464/0x730
[ 2.776396][ T1] ? __pfx_tmigr_cpu_prepare+0x10/0x10
[ 2.776408][ T1] ? __pfx_tmigr_cpu_prepare+0x10/0x10
[ 2.776419][ T1] __cpuhp_setup_state+0x3f/0x60
[ 2.776434][ T1] tmigr_init+0x231/0x2a0
[ 2.776447][ T1] ? __pfx_tmigr_init+0x10/0x10
[ 2.776459][ T1] do_one_initcall+0x248/0x880
[ 2.776473][ T1] ? __pfx_tmigr_init+0x10/0x10
[ 2.776485][ T1] ? __pfx_do_one_initcall+0x10/0x10
[ 2.776536][ T1] ? call_rcu_tasks_generic+0x679/0xa30
[ 2.776547][ T1] ? __pfx_wakeme_after_rcu+0x10/0x10
[ 2.776562][ T1] ? __pfx_test_rcu_tasks_callback+0x10/0x10
[ 2.776585][ T1] ? rcu_is_watching+0x15/0xb0
[ 2.776599][ T1] do_pre_smp_initcalls+0x57/0xa0
[ 2.776615][ T1] kernel_init_freeable+0x40d/0x5d0
[ 2.776632][ T1] ? __pfx_kernel_init_freeable+0x10/0x10
[ 2.776645][ T1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 2.776659][ T1] ? __pfx_kernel_init+0x10/0x10
[ 2.776672][ T1] ? __pfx_kernel_init+0x10/0x10
[ 2.776681][ T1] ? __pfx_kernel_init+0x10/0x10
[ 2.776692][ T1] kernel_init+0x1d/0x2b0
[ 2.776702][ T1] ret_from_fork+0x4b/0x80
[ 2.776716][ T1] ? __pfx_kernel_init+0x10/0x10
[ 2.776727][ T1] ret_from_fork_asm+0x1a/0x30
[ 2.776748][ T1]
[ 2.776753][ T1] Kernel panic - not syncing: kernel: panic_on_warn set ...
[ 2.782487][ T1] CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.10.0-next-20240723-syzkaller-13569-g2347b4c79f5e #0
[ 2.782487][ T1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
[ 2.782487][ T1] Call Trace:
[ 2.782487][ T1]
[ 2.782487][ T1] dump_stack_lvl+0x241/0x360
[ 2.782487][ T1] ? __pfx_dump_stack_lvl+0x10/0x10
[ 2.782487][ T1] ? __pfx__printk+0x10/0x10
[ 2.782487][ T1] ? _printk+0xd5/0x120
[ 2.782487][ T1] ? vscnprintf+0x5d/0x90
[ 2.782487][ T1] panic+0x349/0x870
[ 2.782487][ T1] ? __warn+0x177/0x4e0
[ 2.782487][ T1] ? __pfx_panic+0x10/0x10
[ 2.782487][ T1] ? show_trace_log_lvl+0x4e6/0x520
[ 2.782487][ T1] ? ret_from_fork_asm+0x1a/0x30
[ 2.782487][ T1] __warn+0x34b/0x4e0
[ 2.782487][ T1] ? tmigr_cpu_prepare+0x10e4/0x1330
[ 2.782487][ T1] report_bug+0x2b3/0x500
[ 2.782487][ T1] ? tmigr_cpu_prepare+0x10e4/0x1330
[ 2.782487][ T1] handle_bug+0x3e/0x70
[ 2.782487][ T1] exc_invalid_op+0x1a/0x50
[ 2.782487][ T1] asm_exc_invalid_op+0x1a/0x20
[ 2.782487][ T1] RIP: 0010:tmigr_cpu_prepare+0x10e4/0x1330
[ 2.782487][ T1] Code: 0d 00 e9 41 fe ff ff e8 ea d3 0d 00 e9 37 fe ff ff 80 3d 81 ea 13 0e 01 75 26 e8 d7 d3 0d 00 e9 24 fe ff ff e8 cd d3 0d 00 90 <0f> 0b 90 e9 a8 ef ff ff e8 bf d3 0d 00 90 0f 0b 90 e9 6e ff ff ff
[ 2.782487][ T1] RSP: 0000:ffffc900000676f0 EFLAGS: 00010293
[ 2.782487][ T1] RAX: ffffffff8185f723 RBX: 0000000000000000 RCX: ffff8880172a8000
[ 2.782487][ T1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[ 2.782487][ T1] RBP: ffff8880b942d2a0 R08: ffffffff8185e6c6 R09: 1ffffffff1f5f34d
[ 2.782487][ T1] R10: dffffc0000000000 R11: ffffffff8185e640 R12: dffffc0000000000
[ 2.782487][ T1] R13: 0000000000000040 R14: 0000000000000000 R15: 0000000000000000
[ 2.782487][ T1] ? __pfx_tmigr_cpu_prepare+0x10/0x10
[ 2.782487][ T1] ? tmigr_cpu_prepare+0x86/0x1330
[ 2.782487][ T1] ? tmigr_cpu_prepare+0x10e3/0x1330
[ 2.782487][ T1] ? __pfx___mutex_trylock_common+0x10/0x10
[ 2.782487][ T1] ? __pfx_tmigr_cpu_prepare+0x10/0x10
[ 2.782487][ T1] ? rcu_is_watching+0x15/0xb0
[ 2.782487][ T1] ? trace_cpuhp_enter+0x94/0x210
[ 2.782487][ T1] ? __pfx_tmigr_cpu_prepare+0x10/0x10
[ 2.782487][ T1] cpuhp_invoke_callback+0x48d/0x830
[ 2.782487][ T1] ? __pfx_tmigr_cpu_prepare+0x10/0x10
[ 2.782487][ T1] ? __cpuhp_setup_state_cpuslocked+0xf9/0x730
[ 2.782487][ T1] cpuhp_issue_call+0x46f/0x7e0
[ 2.782487][ T1] ? __pfx_tmigr_cpu_prepare+0x10/0x10
[ 2.782487][ T1] ? rcu_read_lock_any_held+0xb7/0x160
[ 2.782487][ T1] ? __pfx_rcu_read_lock_any_held+0x10/0x10
[ 2.782487][ T1] __cpuhp_setup_state_cpuslocked+0x464/0x730
[ 2.782487][ T1] ? __pfx_tmigr_cpu_prepare+0x10/0x10
[ 2.782487][ T1] ? __pfx_tmigr_cpu_prepare+0x10/0x10
[ 2.782487][ T1] __cpuhp_setup_state+0x3f/0x60
[ 2.782487][ T1] tmigr_init+0x231/0x2a0
[ 2.782487][ T1] ? __pfx_tmigr_init+0x10/0x10
[ 2.782487][ T1] do_one_initcall+0x248/0x880
[ 2.782487][ T1] ? __pfx_tmigr_init+0x10/0x10
[ 2.782487][ T1] ? __pfx_do_one_initcall+0x10/0x10
[ 2.782487][ T1] ? call_rcu_tasks_generic+0x679/0xa30
[ 2.782487][ T1] ? __pfx_wakeme_after_rcu+0x10/0x10
[ 2.782487][ T1] ? __pfx_test_rcu_tasks_callback+0x10/0x10
[ 2.782487][ T1] ? rcu_is_watching+0x15/0xb0
[ 2.782487][ T1] do_pre_smp_initcalls+0x57/0xa0
[ 2.782487][ T1] kernel_init_freeable+0x40d/0x5d0
[ 2.782487][ T1] ? __pfx_kernel_init_freeable+0x10/0x10
[ 2.782487][ T1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 2.782487][ T1] ? __pfx_kernel_init+0x10/0x10
[ 2.782487][ T1] ? __pfx_kernel_init+0x10/0x10
[ 2.782487][ T1] ? __pfx_kernel_init+0x10/0x10
[ 2.782487][ T1] kernel_init+0x1d/0x2b0
[ 2.782487][ T1] ret_from_fork+0x4b/0x80
[ 2.782487][ T1] ? __pfx_kernel_init+0x10/0x10
[ 2.782487][ T1] ret_from_fork_asm+0x1a/0x30
[ 2.782487][ T1]
[ 2.782487][ T1] 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='go1.21.4'
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-build1575709119=/tmp/go-build -gno-record-gcc-switches'
git status (err=)
HEAD detached at bc4ebbb5bf
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
go fmt ./sys/... >/dev/null
touch .descriptions
GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=bc4ebbb5bf84ebb005a6746d61df58528c02e85f -X 'github.com/google/syzkaller/prog.gitRevisionDate=20240705-142815'" "-tags=syz_target syz_os_linux syz_arch_amd64 " -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 -fpermissive -w -DGOOS_linux=1 -DGOARCH_amd64=1 \
-DHOSTGOOS_linux=1 -DGIT_REVISION=\"bc4ebbb5bf84ebb005a6746d61df58528c02e85f\"
/usr/bin/ld: /tmp/cc7W7RKC.o: in function `test_cover_filter()':
executor.cc:(.text+0x1340b): warning: the use of `tempnam' is dangerous, better use `mkstemp'
/usr/bin/ld: /tmp/cc7W7RKC.o: in function `Connection::Connect(char const*, char const*)':
executor.cc:(.text._ZN10Connection7ConnectEPKcS1_[_ZN10Connection7ConnectEPKcS1_]+0x1a0): warning: Using 'gethostbyname' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking
# Temporal hack to pre-created removed syz-fuzzer,
# since old version of syz-ci still wants to copy it.
touch ./bin/linux_amd64/syz-fuzzer