WARNING in switch_mm_irqs_off
------------[ cut here ]------------
WARNING: CPU: 0 PID: 9 at arch/x86/mm/tlb.c:919 switch_mm_irqs_off+0x640/0x7c0 arch/x86/mm/tlb.c:918
Modules linked in:
CPU: 0 UID: 0 PID: 9 Comm: kworker/0:0 Not tainted 6.15.0-rc5-next-20250506-syzkaller-08679-g0a00723f4c2d #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/29/2025
Workqueue: events once_deferred
RIP: 0010:switch_mm_irqs_off+0x640/0x7c0 arch/x86/mm/tlb.c:918
Code: 84 f4 fa ff ff 90 0f 0b 90 e9 eb fa ff ff 90 0f 0b 90 e9 84 fe ff ff 90 0f 0b 90 e9 18 fc ff ff 90 0f 0b 90 e9 cb fb ff ff 90 <0f> 0b 90 e9 df fb ff ff 89 c8 90 0f 0b 90 e9 3f fd ff ff 90 0f 0b
RSP: 0000:ffffc900000e7740 EFLAGS: 00010056
RAX: 0000000000000001 RBX: ffff888018470940 RCX: ffffffff816876dd
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888018470940
RBP: ffffc900000e7810 R08: ffff888018470947 R09: 1ffff1100308e128
R10: dffffc0000000000 R11: ffffed100308e129 R12: 1ffff1100345d0ab
R13: ffffffff8ce27740 R14: ffff88801a2e8000 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8881281ab000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff88823ffff000 CR3: 0000000018478000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
unuse_temporary_mm+0x9d/0x100 arch/x86/mm/tlb.c:1038
__text_poke+0x52d/0x7f0 arch/x86/kernel/alternative.c:2214
text_poke arch/x86/kernel/alternative.c:2257 [inline]
smp_text_poke_batch_finish+0x213/0xe10 arch/x86/kernel/alternative.c:2565
arch_jump_label_transform_apply+0x17/0x30 arch/x86/kernel/jump_label.c:146
static_key_disable_cpuslocked+0x9b/0x160 kernel/jump_label.c:240
static_key_disable+0x15/0x20 kernel/jump_label.c:248
once_deferred+0x56/0x90 lib/once.c:20
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0x9f5/0x13f0 kernel/workqueue.c:3321
worker_thread+0x772/0xba0 kernel/workqueue.c:3402
kthread+0x5fd/0x770 kernel/kthread.c:464
ret_from_fork+0x32/0x70 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
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@10.128.0.206" "pwd"]: exit status 255
ssh: connect to host 10.128.0.206 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 bc75221c-bda7-2114-023c-35d84fbe4d56
found virtio-scsi at 0:3
virtio-scsi vendor='Google' product='PersistentDisk' rev='1' type=0 removable=0
virtio-scsi blksize=512 sectors=4194304 = 2048 MiB
drive 0x000f27f0: PCHS=0/0/0 translation=lba LCHS=520/128/63 s=4194304
Sending Seabios boot VM event.
Booting from Hard Disk 0...
[ 0.000000][ T0] Linux version 6.15.0-rc5-next-20250506-syzkaller-08679-g0a00723f4c2d (syzkaller@syzkaller) (Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2) #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 04/29/2025
[ 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
[ 0.000006][ T0] kvm-clock: using sched offset of 4180107395 cycles
[ 0.000926][ T0] clocksource: kvm-clock: mask: 0xffffffffffffffff max_cycles: 0x1cd42e4dffb, max_idle_ns: 881590591483 ns
[ 0.004433][ T0] tsc: Detected 2200.184 MHz processor
[ 0.006208][ T0] last_pfn = 0x240000 max_arch_pfn = 0x400000000
[ 0.007128][ T0] MTRR map: 4 entries (3 fixed + 1 variable; max 19), built from 8 variable MTRRs
[ 0.008952][ T0] x86/PAT: Configuration [0-7]: WB WC UC- UC WB WP UC- WT
[ 0.010539][ T0] last_pfn = 0xbfffd max_arch_pfn = 0x400000000
[ 0.016960][ T0] found SMP MP-table at [mem 0x000f2ab0-0x000f2abf]
[ 0.018345][ T0] Using GB pages for direct mapping
[ 0.020598][ T0] ACPI: Early table checksum verification disabled
[ 0.021528][ T0] ACPI: RSDP 0x00000000000F2830 000014 (v00 Google)
[ 0.022477][ T0] ACPI: RSDT 0x00000000BFFFFFA0 000038 (v01 Google GOOGRSDT 00000001 GOOG 00000001)
[ 0.024115][ T0] ACPI: FACP 0x00000000BFFFF330 0000F4 (v02 Google GOOGFACP 00000001 GOOG 00000001)
[ 0.026070][ T0] ACPI: DSDT 0x00000000BFFFD8C0 001A64 (v01 Google GOOGDSDT 00000001 GOOG 00000001)
[ 0.027532][ T0] ACPI: FACS 0x00000000BFFFD880 000040
[ 0.028361][ T0] ACPI: FACS 0x00000000BFFFD880 000040
[ 0.029184][ T0] ACPI: SRAT 0x00000000BFFFFE60 0000C8 (v03 Google GOOGSRAT 00000001 GOOG 00000001)
[ 0.030492][ T0] ACPI: APIC 0x00000000BFFFFDB0 000076 (v05 Google GOOGAPIC 00000001 GOOG 00000001)
[ 0.031840][ T0] ACPI: SSDT 0x00000000BFFFF430 000980 (v01 Google GOOGSSDT 00000001 GOOG 00000001)
[ 0.033250][ T0] ACPI: WAET 0x00000000BFFFFE30 000028 (v01 Google GOOGWAET 00000001 GOOG 00000001)
[ 0.034517][ T0] ACPI: Reserving FACP table memory at [mem 0xbffff330-0xbffff423]
[ 0.035529][ T0] ACPI: Reserving DSDT table memory at [mem 0xbfffd8c0-0xbffff323]
[ 0.036874][ T0] ACPI: Reserving FACS table memory at [mem 0xbfffd880-0xbfffd8bf]
[ 0.038340][ T0] ACPI: Reserving FACS table memory at [mem 0xbfffd880-0xbfffd8bf]
[ 0.039464][ T0] ACPI: Reserving SRAT table memory at [mem 0xbffffe60-0xbfffff27]
[ 0.040931][ T0] ACPI: Reserving APIC table memory at [mem 0xbffffdb0-0xbffffe25]
[ 0.042506][ T0] ACPI: Reserving SSDT table memory at [mem 0xbffff430-0xbffffdaf]
[ 0.043803][ T0] ACPI: Reserving WAET table memory at [mem 0xbffffe30-0xbffffe57]
[ 0.045093][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x00000000-0x0009ffff]
[ 0.046566][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x00100000-0xbfffffff]
[ 0.047674][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x100000000-0x23fffffff]
[ 0.048736][ T0] NUMA: Node 0 [mem 0x00001000-0x0009ffff] + [mem 0x00100000-0xbfffffff] -> [mem 0x00001000-0xbfffffff]
[ 0.050690][ T0] NUMA: Node 0 [mem 0x00001000-0xbfffffff] + [mem 0x100000000-0x23fffffff] -> [mem 0x00001000-0x23fffffff]
[ 0.053023][ T0] Faking node 0 at [mem 0x0000000000001000-0x0000000140000fff] (5120MB)
[ 0.054494][ T0] Faking node 1 at [mem 0x0000000140001000-0x000000023fffffff] (4095MB)
[ 0.055875][ T0] NODE_DATA(0) allocated [mem 0x13fffb400-0x140000fff]
[ 0.057991][ T0] NODE_DATA(1) allocated [mem 0x23fff7400-0x23fffcfff]
[ 0.100030][ T0] Zone ranges:
[ 0.100660][ T0] DMA [mem 0x0000000000001000-0x0000000000ffffff]
[ 0.101800][ T0] DMA32 [mem 0x0000000001000000-0x00000000ffffffff]
[ 0.102890][ T0] Normal [mem 0x0000000100000000-0x000000023fffffff]
[ 0.104455][ T0] Device empty
[ 0.105136][ T0] Movable zone start for each node
[ 0.106229][ T0] Early memory node ranges
[ 0.107059][ T0] node 0: [mem 0x0000000000001000-0x000000000009efff]
[ 0.109134][ T0] node 0: [mem 0x0000000000100000-0x00000000bfffcfff]
[ 0.110331][ T0] node 0: [mem 0x0000000100000000-0x0000000140000fff]
[ 0.111546][ T0] node 1: [mem 0x0000000140001000-0x000000023fffffff]
[ 0.112985][ T0] Initmem setup node 0 [mem 0x0000000000001000-0x0000000140000fff]
[ 0.114888][ T0] Initmem setup node 1 [mem 0x0000000140001000-0x000000023fffffff]
[ 0.116627][ T0] On node 0, zone DMA: 1 pages in unavailable ranges
[ 0.118390][ T0] On node 0, zone DMA: 97 pages in unavailable ranges
[ 0.169324][ T0] On node 0, zone Normal: 3 pages in unavailable ranges
[ 0.538871][ T0] kasan: KernelAddressSanitizer initialized
[ 0.540362][ T0] ACPI: PM-Timer IO Port: 0xb008
[ 0.541071][ T0] ACPI: LAPIC_NMI (acpi_id[0xff] dfl dfl lint[0x1])
[ 0.542193][ T0] IOAPIC[0]: apic_id 0, version 17, address 0xfec00000, GSI 0-23
[ 0.543950][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 high level)
[ 0.545443][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
[ 0.546901][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 high level)
[ 0.548109][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 high level)
[ 0.549216][ T0] ACPI: Using ACPI (MADT) for SMP configuration information
[ 0.550224][ T0] CPU topo: Max. logical packages: 1
[ 0.551206][ T0] CPU topo: Max. logical dies: 1
[ 0.552014][ T0] CPU topo: Max. dies per package: 1
[ 0.552768][ T0] CPU topo: Max. threads per core: 2
[ 0.553753][ T0] CPU topo: Num. cores per package: 1
[ 0.554981][ T0] CPU topo: Num. threads per package: 2
[ 0.556527][ T0] CPU topo: Allowing 2 present CPUs plus 0 hotplug CPUs
[ 0.558466][ T0] PM: hibernation: Registered nosave memory: [mem 0x00000000-0x00000fff]
[ 0.559852][ T0] PM: hibernation: Registered nosave memory: [mem 0x0009f000-0x000fffff]
[ 0.561059][ T0] PM: hibernation: Registered nosave memory: [mem 0xbfffd000-0xffffffff]
[ 0.562783][ T0] [mem 0xc0000000-0xfffbbfff] available for PCI devices
[ 0.564203][ T0] Booting paravirtualized kernel on KVM
[ 0.565360][ T0] clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[ 0.650920][ T0] setup_percpu: NR_CPUS:8 nr_cpumask_bits:2 nr_cpu_ids:2 nr_node_ids:2
[ 0.653244][ T0] percpu: Embedded 70 pages/cpu s246024 r8192 d32504 u1048576
[ 0.654887][ T0] kvm-guest: PV spinlocks enabled
[ 0.655659][ T0] PV qspinlock hash table entries: 256 (order: 0, 4096 bytes, linear)
[ 0.657026][ 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
[ 0.659615][ T0] Unknown kernel command line parameters "spec_store_bypass_disable=prctl nbds_max=32 BOOT_IMAGE=/boot/bzImage", will be passed to user space.
[ 0.681983][ T0] random: crng init done
[ 0.682895][ T0] printk: log buffer data + meta data: 262144 + 91serialport: Connected to syzkaller.us-central1-c.ci-upstream-linux-next-kasan-gce-root-test-job-parallel-0 port 1 (session ID: ee05bb95ff1091aebc11e8b900a08558fbc33e7b3d7a0a554d6e0fdcb435544c, active connections: 1).
7504 = 1179648 bytes
[ 0.684538][ T0] software IO TLB: area num 2.
[ 0.713608][ T0] Fallback order for Node 0: 0 1
[ 0.713623][ T0] Fallback order for Node 1: 1 0
[ 0.713631][ T0] Built 2 zonelists, mobility grouping on. Total pages: 2097051
[ 0.716801][ T0] Policy zone: Normal
[ 0.718148][ T0] mem auto-init: stack:all(zero), heap alloc:on, heap free:off
[ 0.720109][ T0] stackdepot: allocating hash table via alloc_large_system_hash
[ 0.721257][ T0] stackdepot hash table entries: 1048576 (order: 12, 16777216 bytes, linear)
[ 1.449911][ T0] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=2
[ 1.568778][ T0] allocated 167772160 bytes of page_ext
[ 1.570186][ T0] Node 0, zone DMA: page owner found early allocated 0 pages
[ 1.584325][ T0] Node 0, zone DMA32: page owner found early allocated 21222 pages
[ 1.589700][ T0] Node 0, zone Normal: page owner found early allocated 0 pages
[ 1.599993][ T0] Node 1, zone Normal: page owner found early allocated 19843 pages
[ 1.602229][ T0] Kernel/User page tables isolation: enabled
[ 1.604945][ T0] Dynamic Preempt: full
[ 1.606926][ T0] Running RCU self tests
[ 1.607632][ T0] Running RCU synchronous self tests
[ 1.608470][ T0] rcu: Preemptible hierarchical RCU implementation.
[ 1.609802][ T0] rcu: RCU lockdep checking is enabled.
[ 1.610788][ T0] rcu: RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=2.
[ 1.612576][ T0] rcu: RCU callback double-/use-after-free debug is enabled.
[ 1.613595][ T0] rcu: RCU debug extended QS entry/exit.
[ 1.614527][ T0] All grace periods are expedited (rcu_expedited).
[ 1.616115][ T0] Trampoline variant of Tasks RCU enabled.
[ 1.617168][ T0] Tracing variant of Tasks RCU enabled.
[ 1.618078][ T0] rcu: RCU calculated value of scheduler-enlistment delay is 10 jiffies.
[ 1.619372][ T0] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2
[ 1.620710][ T0] Running RCU synchronous self tests
[ 1.621486][ T0] RCU Tasks: Setting shift to 1 and lim to 1 rcu_task_cb_adjust=1 rcu_task_cpu_ids=2.
[ 1.623197][ T0] RCU Tasks Trace: Setting shift to 1 and lim to 1 rcu_task_cb_adjust=1 rcu_task_cpu_ids=2.
[ 1.724370][ T0] NR_IRQS: 4352, nr_irqs: 440, preallocated irqs: 16
[ 1.727244][ T0] rcu: srcu_init: Setting srcu_struct sizes based on contention.
[ 1.729862][ T0] kfence: initialized - using 2097152 bytes for 255 objects at 0xffff88823be00000-0xffff88823c000000
[ 1.732906][ T0] Console: colour VGA+ 80x25
[ 1.734774][ T0] printk: legacy console [ttyS0] enabled
[ 1.734774][ T0] printk: legacy console [ttyS0] enabled
[ 1.737121][ T0] printk: legacy bootconsole [earlyser0] disabled
[ 1.737121][ T0] printk: legacy bootconsole [earlyser0] disabled
[ 1.740309][ T0] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar
[ 1.742424][ T0] ... MAX_LOCKDEP_SUBCLASSES: 8
[ 1.744049][ T0] ... MAX_LOCK_DEPTH: 48
[ 1.744805][ T0] ... MAX_LOCKDEP_KEYS: 8192
[ 1.746133][ T0] ... CLASSHASH_SIZE: 4096
[ 1.747029][ T0] ... MAX_LOCKDEP_ENTRIES: 1048576
[ 1.748485][ T0] ... MAX_LOCKDEP_CHAINS: 1048576
[ 1.749324][ T0] ... CHAINHASH_SIZE: 524288
[ 1.750295][ T0] memory used by lock dependency info: 106625 kB
[ 1.751938][ T0] memory used for stack traces: 8320 kB
[ 1.753146][ T0] per task-struct memory footprint: 1920 bytes
[ 1.755096][ T0] mempolicy: Enabling automatic NUMA balancing. Configure with numa_balancing= or the kernel.numa_balancing sysctl
[ 1.757161][ T0] ACPI: Core revision 20250404
[ 1.758906][ T0] APIC: Switch to symmetric I/O mode setup
[ 1.760540][ T0] x2apic enabled
[ 1.765248][ T0] APIC: Switched APIC routing to: physical x2apic
[ 1.773045][ T0] ..TIMER: vector=0x30 apic1=0 pin1=0 apic2=-1 pin2=-1
[ 1.775657][ T0] clocksource: tsc-early: mask: 0xffffffffffffffff max_cycles: 0x1fb6e098a80, max_idle_ns: 440795284046 ns
[ 1.778400][ T0] Calibrating delay loop (skipped) preset value.. 4400.36 BogoMIPS (lpj=22001840)
[ 1.789130][ T0] Last level iTLB entries: 4KB 64, 2MB 8, 4MB 8
[ 1.790513][ T0] Last level dTLB entries: 4KB 64, 2MB 32, 4MB 32, 1GB 4
[ 1.792146][ T0] Spectre V1 : Mitigation: usercopy/swapgs barriers and __user pointer sanitization
[ 1.794083][ T0] Spectre V2 : Spectre BHI mitigation: SW BHB clearing on syscall and VM exit
[ 1.795953][ T0] Spectre V2 : Mitigation: IBRS
[ 1.796987][ T0] Spectre V2 : Spectre v2 / SpectreRSB: Filling RSB on context switch and VMEXIT
[ 1.798397][ T0] RETBleed: Mitigation: IBRS
[ 1.799184][ T0] Spectre V2 : mitigation: Enabling conditional Indirect Branch Prediction Barrier
[ 1.800603][ T0] Spectre V2 : User space: Mitigation: STIBP via prctl
[ 1.802004][ T0] Speculative Store Bypass: Mitigation: Speculative Store Bypass disabled via prctl
[ 1.804501][ T0] MDS: Mitigation: Clear CPU buffers
[ 1.805433][ T0] TAA: Mitigation: Clear CPU buffers
[ 1.806438][ T0] MMIO Stale Data: Vulnerable: Clear CPU buffers attempted, no microcode
[ 1.808448][ T0] x86/fpu: Supporting XSAVE feature 0x001: 'x87 floating point registers'
[ 1.810003][ T0] x86/fpu: Supporting XSAVE feature 0x002: 'SSE registers'
[ 1.811245][ T0] x86/fpu: Supporting XSAVE feature 0x004: 'AVX registers'
[ 1.812732][ T0] x86/fpu: xstate_offset[2]: 576, xstate_sizes[2]: 256
[ 1.814283][ T0] x86/fpu: Enabled xstate features 0x7, context size is 832 bytes, using 'standard' format.
[ 2.002217][ T0] Freeing SMP alternatives memory: 132K
[ 2.003815][ T0] pid_max: default: 32768 minimum: 301
[ 2.005996][ T0] LSM: initializing lsm=lockdown,capability,landlock,yama,safesetid,tomoyo,apparmor,bpf,ima,evm
[ 2.008362][ T0] landlock: Up and running.
[ 2.008406][ T0] Yama: becoming mindful.
[ 2.009864][ T0] TOMOYO Linux initialized
[ 2.011566][ T0] AppArmor: AppArmor initialized
[ 2.014166][ T0] LSM support for eBPF active
[ 2.022684][ T0] Dentry cache hash table entries: 1048576 (order: 11, 8388608 bytes, vmalloc hugepage)
[ 2.027473][ T0] Inode-cache hash table entries: 524288 (order: 10, 4194304 bytes, vmalloc hugepage)
[ 2.028911][ T0] Mount-cache hash table entries: 16384 (order: 5, 131072 bytes, vmalloc)
[ 2.031485][ T0] Mountpoint-cache hash table entries: 16384 (order: 5, 131072 bytes, vmalloc)
[ 2.039349][ T0] Running RCU synchronous self tests
[ 2.040699][ T0] Running RCU synchronous self tests
[ 2.163382][ T1] smpboot: CPU0: Intel(R) Xeon(R) CPU @ 2.20GHz (family: 0x6, model: 0x4f, stepping: 0x0)
[ 2.168385][ T9] ------------[ cut here ]------------
[ 2.168385][ T9] WARNING: CPU: 0 PID: 9 at arch/x86/mm/tlb.c:919 switch_mm_irqs_off+0x640/0x7c0
[ 2.168385][ T9] Modules linked in:
[ 2.168385][ T9] CPU: 0 UID: 0 PID: 9 Comm: kworker/0:0 Not tainted 6.15.0-rc5-next-20250506-syzkaller-08679-g0a00723f4c2d #0 PREEMPT(full)
[ 2.168385][ T9] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/29/2025
[ 2.168385][ T9] Workqueue: events once_deferred
[ 2.168385][ T9] RIP: 0010:switch_mm_irqs_off+0x640/0x7c0
[ 2.168385][ T9] Code: 84 f4 fa ff ff 90 0f 0b 90 e9 eb fa ff ff 90 0f 0b 90 e9 84 fe ff ff 90 0f 0b 90 e9 18 fc ff ff 90 0f 0b 90 e9 cb fb ff ff 90 <0f> 0b 90 e9 df fb ff ff 89 c8 90 0f 0b 90 e9 3f fd ff ff 90 0f 0b
[ 2.168385][ T9] RSP: 0000:ffffc900000e7740 EFLAGS: 00010056
[ 2.168385][ T9] RAX: 0000000000000001 RBX: ffff888018470940 RCX: ffffffff816876dd
[ 2.168385][ T9] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888018470940
[ 2.168385][ T9] RBP: ffffc900000e7810 R08: ffff888018470947 R09: 1ffff1100308e128
[ 2.168385][ T9] R10: dffffc0000000000 R11: ffffed100308e129 R12: 1ffff1100345d0ab
[ 2.168385][ T9] R13: ffffffff8ce27740 R14: ffff88801a2e8000 R15: 0000000000000000
[ 2.168385][ T9] FS: 0000000000000000(0000) GS:ffff8881281ab000(0000) knlGS:0000000000000000
[ 2.168385][ T9] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2.168385][ T9] CR2: ffff88823ffff000 CR3: 0000000018478000 CR4: 00000000003506f0
[ 2.168385][ T9] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2.168385][ T9] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2.168385][ T9] Call Trace:
[ 2.168385][ T9]
[ 2.168385][ T9] ? __pfx_switch_mm_irqs_off+0x10/0x10
[ 2.168385][ T9] ? __text_poke+0x49e/0x7f0
[ 2.168385][ T9] ? kasan_check_range+0x29a/0x2b0
[ 2.168385][ T9] ? serial8250_isa_init_ports+0x5e/0xe0
[ 2.168385][ T9] unuse_temporary_mm+0x9d/0x100
[ 2.168385][ T9] __text_poke+0x52d/0x7f0
[ 2.168385][ T9] ? __pfx_text_poke_memcpy+0x10/0x10
[ 2.168385][ T9] ? serial8250_isa_init_ports+0x5e/0xe0
[ 2.168385][ T9] ? __pfx___text_poke+0x10/0x10
[ 2.168385][ T9] ? rcu_is_watching+0x15/0xb0
[ 2.168385][ T9] ? trace_contention_end+0x39/0x120
[ 2.168385][ T9] smp_text_poke_batch_finish+0x213/0xe10
[ 2.168385][ T9] ? __pfx___mutex_lock+0x10/0x10
[ 2.168385][ T9] ? __pfx_smp_text_poke_batch_finish+0x10/0x10
[ 2.168385][ T9] ? arch_jump_label_transform_queue+0x7a/0xe0
[ 2.168385][ T9] ? process_scheduled_works+0x957/0x13f0
[ 2.168385][ T9] arch_jump_label_transform_apply+0x17/0x30
[ 2.168385][ T9] static_key_disable_cpuslocked+0x9b/0x160
[ 2.168385][ T9] static_key_disable+0x15/0x20
[ 2.168385][ T9] once_deferred+0x56/0x90
[ 2.168385][ T9] process_scheduled_works+0x9f5/0x13f0
[ 2.168385][ T9] ? __pfx_process_scheduled_works+0x10/0x10
[ 2.168385][ T9] ? assign_work+0x28f/0x3a0
[ 2.168385][ T9] worker_thread+0x772/0xba0
[ 2.168385][ T9] kthread+0x5fd/0x770
[ 2.168385][ T9] ? __pfx_worker_thread+0x10/0x10
[ 2.168385][ T9] ? __pfx_kthread+0x10/0x10
[ 2.168385][ T9] ? __pfx_kthread+0x10/0x10
[ 2.168385][ T9] ? _raw_spin_unlock_irq+0x23/0x50
[ 2.168385][ T9] ? lockdep_hardirqs_on+0x9c/0x150
[ 2.168385][ T9] ? __pfx_kthread+0x10/0x10
[ 2.168385][ T9] ret_from_fork+0x32/0x70
[ 2.168385][ T9] ? __pfx_kthread+0x10/0x10
[ 2.168385][ T9] ret_from_fork_asm+0x1a/0x30
[ 2.168385][ T9]
[ 2.168385][ T9] Kernel panic - not syncing: kernel: panic_on_warn set ...
[ 2.168385][ T9] CPU: 0 UID: 0 PID: 9 Comm: kworker/0:0 Not tainted 6.15.0-rc5-next-20250506-syzkaller-08679-g0a00723f4c2d #0 PREEMPT(full)
[ 2.168385][ T9] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/29/2025
[ 2.168385][ T9] Workqueue: events once_deferred
[ 2.168385][ T9] Call Trace:
[ 2.168385][ T9]
[ 2.168385][ T9] dump_stack_lvl+0x8b/0x190
[ 2.168385][ T9] ? __pfx_dump_stack_lvl+0x10/0x10
[ 2.168385][ T9] ? __pfx__printk+0x10/0x10
[ 2.168385][ T9] ? __pfx__printk+0x10/0x10
[ 2.168385][ T9] panic+0x226/0x5c0
[ 2.168385][ T9] ? __pfx_panic+0x10/0x10
[ 2.168385][ T9] ? ret_from_fork_asm+0x1a/0x30
[ 2.168385][ T9] __warn+0x255/0x370
[ 2.168385][ T9] ? switch_mm_irqs_off+0x640/0x7c0
[ 2.168385][ T9] ? switch_mm_irqs_off+0x640/0x7c0
[ 2.168385][ T9] report_bug+0x1d1/0x440
[ 2.168385][ T9] ? switch_mm_irqs_off+0x640/0x7c0
[ 2.168385][ T9] ? switch_mm_irqs_off+0x642/0x7c0
[ 2.168385][ T9] handle_bug+0x84/0x160
[ 2.168385][ T9] exc_invalid_op+0x1a/0x50
[ 2.168385][ T9] asm_exc_invalid_op+0x1a/0x20
[ 2.168385][ T9] RIP: 0010:switch_mm_irqs_off+0x640/0x7c0
[ 2.168385][ T9] Code: 84 f4 fa ff ff 90 0f 0b 90 e9 eb fa ff ff 90 0f 0b 90 e9 84 fe ff ff 90 0f 0b 90 e9 18 fc ff ff 90 0f 0b 90 e9 cb fb ff ff 90 <0f> 0b 90 e9 df fb ff ff 89 c8 90 0f 0b 90 e9 3f fd ff ff 90 0f 0b
[ 2.168385][ T9] RSP: 0000:ffffc900000e7740 EFLAGS: 00010056
[ 2.168385][ T9] RAX: 0000000000000001 RBX: ffff888018470940 RCX: ffffffff816876dd
[ 2.168385][ T9] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888018470940
[ 2.168385][ T9] RBP: ffffc900000e7810 R08: ffff888018470947 R09: 1ffff1100308e128
[ 2.168385][ T9] R10: dffffc0000000000 R11: ffffed100308e129 R12: 1ffff1100345d0ab
[ 2.168385][ T9] R13: ffffffff8ce27740 R14: ffff88801a2e8000 R15: 0000000000000000
[ 2.168385][ T9] ? switch_mm_irqs_off+0x21d/0x7c0
[ 2.168385][ T9] ? __pfx_switch_mm_irqs_off+0x10/0x10
[ 2.168385][ T9] ? __text_poke+0x49e/0x7f0
[ 2.168385][ T9] ? kasan_check_range+0x29a/0x2b0
[ 2.168385][ T9] ? serial8250_isa_init_ports+0x5e/0xe0
[ 2.168385][ T9] unuse_temporary_mm+0x9d/0x100
[ 2.168385][ T9] __text_poke+0x52d/0x7f0
[ 2.168385][ T9] ? __pfx_text_poke_memcpy+0x10/0x10
[ 2.168385][ T9] ? serial8250_isa_init_ports+0x5e/0xe0
[ 2.168385][ T9] ? __pfx___text_poke+0x10/0x10
[ 2.168385][ T9] ? rcu_is_watching+0x15/0xb0
[ 2.168385][ T9] ? trace_contention_end+0x39/0x120
[ 2.168385][ T9] smp_text_poke_batch_finish+0x213/0xe10
[ 2.168385][ T9] ? __pfx___mutex_lock+0x10/0x10
[ 2.168385][ T9] ? __pfx_smp_text_poke_batch_finish+0x10/0x10
[ 2.168385][ T9] ? arch_jump_label_transform_queue+0x7a/0xe0
[ 2.168385][ T9] ? process_scheduled_works+0x957/0x13f0
[ 2.168385][ T9] arch_jump_label_transform_apply+0x17/0x30
[ 2.168385][ T9] static_key_disable_cpuslocked+0x9b/0x160
[ 2.168385][ T9] static_key_disable+0x15/0x20
[ 2.168385][ T9] once_deferred+0x56/0x90
[ 2.168385][ T9] process_scheduled_works+0x9f5/0x13f0
[ 2.168385][ T9] ? __pfx_process_scheduled_works+0x10/0x10
[ 2.168385][ T9] ? assign_work+0x28f/0x3a0
[ 2.168385][ T9] worker_thread+0x772/0xba0
[ 2.168385][ T9] kthread+0x5fd/0x770
[ 2.168385][ T9] ? __pfx_worker_thread+0x10/0x10
[ 2.168385][ T9] ? __pfx_kthread+0x10/0x10
[ 2.168385][ T9] ? __pfx_kthread+0x10/0x10
[ 2.168385][ T9] ? _raw_spin_unlock_irq+0x23/0x50
[ 2.168385][ T9] ? lockdep_hardirqs_on+0x9c/0x150
[ 2.168385][ T9] ? __pfx_kthread+0x10/0x10
[ 2.168385][ T9] ret_from_fork+0x32/0x70
[ 2.168385][ T9] ? __pfx_kthread+0x10/0x10
[ 2.168385][ T9] ret_from_fork_asm+0x1a/0x30
[ 2.168385][ T9]
[ 2.168385][ T9] 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-build4093423357=/tmp/go-build -gno-record-gcc-switches'
git status (err=)
HEAD detached at 68da6d951a3
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=68da6d951a345757b69b764ceb8dda1e9d65b038 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20241122-101921'" "-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=\"68da6d951a345757b69b764ceb8dda1e9d65b038\"
/usr/bin/ld: /tmp/ccMAQSRc.o: in function `test_cover_filter()':
executor.cc:(.text+0x142db): warning: the use of `tempnam' is dangerous, better use `mkstemp'
/usr/bin/ld: /tmp/ccMAQSRc.o: in function `Connection::Connect(char const*, char const*)':
executor.cc:(.text._ZN10Connection7ConnectEPKcS1_[_ZN10Connection7ConnectEPKcS1_]+0x104): warning: Using 'gethostbyname' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking