[ 0.000000][ T0] Booting Linux on physical CPU 0x0000000000 [0x411fd070] [ 0.000000][ T0] Linux version 5.12.0-rc2-syzkaller-00570-g88fe49249c99 (syzkaller@syzkaller) (aarch64-linux-gnu-gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.1) #0 SMP PREEMPT now [ 0.000000][ T0] Machine model: linux,dummy-virt [ 0.000000][ T0] efi: UEFI not found. [ 0.000000][ T0] NUMA: No NUMA configuration found [ 0.000000][ T0] NUMA: Faking a node at [mem 0x0000000040000000-0x00000000bfffffff] [ 0.000000][ T0] NUMA: NODE_DATA [mem 0xbfc22ec0-0xbfc25fff] [ 0.000000][ T0] Zone ranges: [ 0.000000][ T0] DMA [mem 0x0000000040000000-0x00000000bfffffff] [ 0.000000][ T0] DMA32 empty [ 0.000000][ T0] Normal empty [ 0.000000][ T0] Device empty [ 0.000000][ T0] Movable zone start for each node [ 0.000000][ T0] Early memory node ranges [ 0.000000][ T0] node 0: [mem 0x0000000040000000-0x00000000bfffffff] [ 0.000000][ T0] Initmem setup node 0 [mem 0x0000000040000000-0x00000000bfffffff] [ 0.000000][ T0] cma: Reserved 32 MiB at 0x00000000bbc00000 [ 0.000000][ T0] kasan: KernelAddressSanitizer initialized [ 0.000000][ T0] psci: probing for conduit method from DT. [ 0.000000][ T0] psci: PSCIv0.2 detected in firmware. [ 0.000000][ T0] psci: Using standard PSCI v0.2 function IDs [ 0.000000][ T0] psci: Trusted OS migration not required [ 0.000000][ T0] percpu: Embedded 41 pages/cpu s128904 r8192 d30840 u167936 [ 0.000000][ T0] Detected PIPT I-cache on CPU0 [ 0.000000][ T0] CPU features: detected: ARM erratum 832075 [ 0.000000][ T0] CPU features: detected: ARM erratum 834220 [ 0.000000][ T0] CPU features: detected: Spectre-v2 [ 0.000000][ T0] CPU features: detected: Spectre-v4 [ 0.000000][ T0] CPU features: detected: ARM errata 1165522, 1319367, or 1530923 [ 0.000000][ T0] Built 1 zonelists, mobility grouping on. Total pages: 516096 [ 0.000000][ T0] Policy zone: DMA [ 0.000000][ T0] Kernel command line: earlyprintk=serial oops=panic nmi_watchdog=panic panic_on_warn=1 panic=1 ftrace_dump_on_oops=orig_cpu vsyscall=native net.ifnames=0 biosdevname=0 root=/dev/vda console=ttyAMA0 [ 0.000000][ T0] Dentry cache hash table entries: 262144 (order: 9, 2097152 bytes, linear) [ 0.000000][ T0] Inode-cache hash table entries: 131072 (order: 8, 1048576 bytes, linear) [ 0.000000][ T0] mem auto-init: stack:off, heap alloc:on, heap free:off [ 0.000000][ T0] Memory: 1561376K/2097152K available (94208K kernel code, 27142K rwdata, 31824K rodata, 2176K init, 14232K bss, 503008K reserved, 32768K cma-reserved) [ 0.000000][ T0] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=1 [ 0.000000][ T0] Running RCU self tests [ 0.000000][ T0] rcu: Preemptible hierarchical RCU implementation. [ 0.000000][ T0] rcu: RCU lockdep checking is enabled. [ 0.000000][ T0] rcu: RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=2. [ 0.000000][ T0] rcu: RCU callback double-/use-after-free debug enabled. [ 0.000000][ T0] rcu: RCU debug extended QS entry/exit. [ 0.000000][ T0] Trampoline variant of Tasks RCU enabled. [ 0.000000][ T0] Tracing variant of Tasks RCU enabled. [ 0.000000][ T0] rcu: RCU calculated value of scheduler-enlistment delay is 10 jiffies. [ 0.000000][ T0] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2 [ 0.000000][ T0] NR_IRQS: 64, nr_irqs: 64, preallocated irqs: 0 [ 0.000000][ T0] GIC: Using split EOI/Deactivate mode [ 0.000000][ T0] GICv2m: range[mem 0x08020000-0x08020fff], SPI[80:143] [ 0.000000][ T0] random: get_random_bytes called from start_kernel+0x200/0x3e8 with crng_init=0 [ 0.000000][ T0] arch_timer: cp15 timer(s) running at 62.50MHz (phys). [ 0.000000][ T0] clocksource: arch_sys_counter: mask: 0xffffffffffffff max_cycles: 0x1cd42e208c, max_idle_ns: 881590405314 ns [ 0.000168][ T0] sched_clock: 56 bits at 62MHz, resolution 16ns, wraps every 4398046511096ns [ 0.028858][ T0] Console: colour dummy device 80x25 [ 0.031509][ T0] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar [ 0.031750][ T0] ... MAX_LOCKDEP_SUBCLASSES: 8 [ 0.031903][ T0] ... MAX_LOCK_DEPTH: 48 [ 0.032054][ T0] ... MAX_LOCKDEP_KEYS: 8192 [ 0.032203][ T0] ... CLASSHASH_SIZE: 4096 [ 0.032352][ T0] ... MAX_LOCKDEP_ENTRIES: 32768 [ 0.032501][ T0] ... MAX_LOCKDEP_CHAINS: 65536 [ 0.032649][ T0] ... CHAINHASH_SIZE: 32768 [ 0.032808][ T0] memory used by lock dependency info: 6365 kB [ 0.032959][ T0] memory used for stack traces: 4224 kB [ 0.033109][ T0] per task-struct memory footprint: 1920 bytes [ 0.039472][ T0] Calibrating delay loop (skipped), value calculated using timer frequency.. 125.00 BogoMIPS (lpj=625000) [ 0.041245][ T0] pid_max: default: 32768 minimum: 301 [ 0.045685][ T0] LSM: Security Framework initializing [ 0.047997][ T0] Yama: becoming mindful. [ 0.053175][ T0] TOMOYO Linux initialized [ 0.055302][ T0] SELinux: Initializing. [ 0.059742][ T0] Mount-cache hash table entries: 4096 (order: 3, 32768 bytes, linear) [ 0.060137][ T0] Mountpoint-cache hash table entries: 4096 (order: 3, 32768 bytes, linear) [ 0.264281][ T1] Running RCU-tasks wait API self tests [ 0.429371][ T10] Callback from call_rcu_tasks_trace() invoked. [ 0.430599][ T1] rcu: Hierarchical SRCU implementation. [ 0.526267][ T1] EFI services will not be available. [ 0.546595][ T1] smp: Bringing up secondary CPUs ... [ 0.589962][ T0] Detected PIPT I-cache on CPU1 [ 0.593271][ T0] CPU1: Booted secondary processor 0x0000000001 [0x411fd070] [ 0.621752][ T1] smp: Brought up 1 node, 2 CPUs [ 0.622314][ T1] SMP: Total of 2 processors activated. [ 0.622602][ T1] CPU features: detected: 32-bit EL0 Support [ 0.622940][ T1] CPU features: detected: CRC32 instructions [ 0.623223][ T1] CPU features: detected: 32-bit EL1 Support [ 0.667451][ T9] Callback from call_rcu_tasks() invoked. [ 1.483767][ T1] CPU: All CPU(s) started at EL2 [ 1.488283][ T14] alternatives: patching kernel code [ 1.595730][ T1] devtmpfs: initialized [ 2.148218][ T1] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns [ 2.150971][ T1] futex hash table entries: 512 (order: 4, 65536 bytes, linear) [ 2.460002][ T1] DMI not present or invalid. [ 2.509644][ T1] NET: Registered protocol family 16 [ 2.686954][ T1] DMA: preallocated 256 KiB GFP_KERNEL pool for atomic allocations [ 2.693547][ T1] DMA: preallocated 256 KiB GFP_KERNEL|GFP_DMA pool for atomic allocations [ 2.705923][ T1] DMA: preallocated 256 KiB GFP_KERNEL|GFP_DMA32 pool for atomic allocations [ 2.712371][ T1] audit: initializing netlink subsys (disabled) [ 2.728922][ T34] audit: type=2000 audit(2.500:1): state=initialized audit_enabled=0 res=1 [ 2.934302][ T1] thermal_sys: Registered thermal governor 'step_wise' [ 2.934630][ T1] thermal_sys: Registered thermal governor 'power_allocator' [ 2.953534][ T1] cpuidle: using governor menu [ 2.957689][ T1] NET: Registered protocol family 42 [ 2.987975][ T1] hw-breakpoint: found 6 breakpoint and 4 watchpoint registers. [ 2.991211][ T1] ASID allocator initialised with 65536 entries [ 3.003180][ T1] Serial: AMBA PL011 UART driver [ 3.797344][ T1] 9000000.pl011: ttyAMA0 at MMIO 0x9000000 (irq = 48, base_baud = 0) is a PL011 rev1 [ 3.928102][ T1] printk: console [ttyAMA0] enabled [ 14.401087][ T1] HugeTLB registered 1.00 GiB page size, pre-allocated 0 pages [ 14.401801][ T1] HugeTLB registered 32.0 MiB page size, pre-allocated 0 pages [ 14.402221][ T1] HugeTLB registered 2.00 MiB page size, pre-allocated 0 pages [ 14.404946][ T1] HugeTLB registered 64.0 KiB page size, pre-allocated 0 pages [ 14.747384][ T1] cryptd: max_cpu_qlen set to 1000 [ 15.413531][ T1] raid6: neonx8 gen() 896 MB/s [ 15.593535][ T1] raid6: neonx8 xor() 442 MB/s [ 15.769628][ T1] raid6: neonx4 gen() 905 MB/s [ 15.947531][ T1] raid6: neonx4 xor() 420 MB/s [ 16.125436][ T1] raid6: neonx2 gen() 888 MB/s [ 16.302401][ T1] raid6: neonx2 xor() 405 MB/s [ 16.480038][ T1] raid6: neonx1 gen() 684 MB/s [ 16.655637][ T1] raid6: neonx1 xor() 341 MB/s [ 16.836720][ T1] raid6: int64x8 gen() 344 MB/s [ 17.013966][ T1] raid6: int64x8 xor() 226 MB/s [ 17.191070][ T1] raid6: int64x4 gen() 385 MB/s [ 17.372739][ T1] raid6: int64x4 xor() 355 MB/s [ 17.549761][ T1] raid6: int64x2 gen() 535 MB/s [ 17.727000][ T1] raid6: int64x2 xor() 345 MB/s [ 17.906104][ T1] raid6: int64x1 gen() 509 MB/s [ 18.084117][ T1] raid6: int64x1 xor() 267 MB/s [ 18.084797][ T1] raid6: using algorithm neonx4 gen() 905 MB/s [ 18.086587][ T1] raid6: .... xor() 420 MB/s, rmw enabled [ 18.088503][ T1] raid6: using neon recovery algorithm [ 18.129738][ T1] ACPI: Interpreter disabled. [ 18.195925][ T1] iommu: Default domain type: Translated [ 18.216366][ T1] vgaarb: loaded [ 18.290879][ T1] SCSI subsystem initialized [ 18.379290][ T1] usbcore: registered new interface driver usbfs [ 18.392153][ T1] usbcore: registered new interface driver hub [ 18.402732][ T1] usbcore: registered new device driver usb [ 18.490414][ T1] pps_core: LinuxPPS API ver. 1 registered [ 18.493283][ T1] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti [ 18.495429][ T1] PTP clock support registered [ 18.525824][ T1] EDAC MC: Ver: 3.0.0 [ 18.699242][ T1] Advanced Linux Sound Architecture Driver Initialized. [ 18.814646][ T1] Bluetooth: Core ver 2.22 [ 18.818593][ T1] NET: Registered protocol family 31 [ 18.819296][ T1] Bluetooth: HCI device and connection manager initialized [ 18.821059][ T1] Bluetooth: HCI socket layer initialized [ 18.821826][ T1] Bluetooth: L2CAP socket layer initialized [ 18.823779][ T1] Bluetooth: SCO socket layer initialized [ 18.829259][ T1] NET: Registered protocol family 8 [ 18.829927][ T1] NET: Registered protocol family 20 [ 18.836126][ T1] NetLabel: Initializing [ 18.836691][ T1] NetLabel: domain hash size = 128 [ 18.837816][ T1] NetLabel: protocols = UNLABELED CIPSOv4 CALIPSO [ 18.846295][ T1] NetLabel: unlabeled traffic allowed by default [ 18.870798][ T1] nfc: nfc_init: NFC Core ver 0.1 [ 18.876253][ T1] NET: Registered protocol family 39 [ 18.910620][ T1] clocksource: Switched to clocksource arch_sys_counter [ 25.578435][ T1] VFS: Disk quotas dquot_6.6.0 [ 25.583531][ T1] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes) [ 25.600844][ T1] FS-Cache: Loaded [ 25.631201][ T1] CacheFiles: Loaded [ 25.645962][ T1] TOMOYO: 2.6.0 [ 25.647059][ T1] Mandatory Access Control activated. [ 25.675562][ T1] pnp: PnP ACPI: disabled [ 27.204347][ T1] NET: Registered protocol family 2 [ 27.253989][ T1] tcp_listen_portaddr_hash hash table entries: 1024 (order: 4, 81920 bytes, linear) [ 27.255828][ T1] TCP established hash table entries: 16384 (order: 5, 131072 bytes, linear) [ 27.277760][ T1] TCP bind hash table entries: 16384 (order: 8, 1179648 bytes, linear) [ 27.290431][ T1] TCP: Hash tables configured (established 16384 bind 16384) [ 27.304710][ T1] MPTCP token hash table entries: 2048 (order: 5, 180224 bytes, linear) [ 27.312963][ T1] UDP hash table entries: 1024 (order: 5, 163840 bytes, linear) [ 27.319244][ T1] UDP-Lite hash table entries: 1024 (order: 5, 163840 bytes, linear) [ 27.333338][ T1] NET: Registered protocol family 1 [ 27.359492][ T1] RPC: Registered named UNIX socket transport module. [ 27.366533][ T1] RPC: Registered udp transport module. [ 27.368238][ T1] RPC: Registered tcp transport module. [ 27.371377][ T1] RPC: Registered tcp NFSv4.1 backchannel transport module. [ 27.402222][ T1] NET: Registered protocol family 44 [ 27.404388][ T1] PCI: CLS 0 bytes, default 64 [ 27.571715][ T1] hw perfevents: enabled with armv8_pmuv3 PMU driver, 5 counters available [ 27.583587][ T1] kvm [1]: Guests without required CPU erratum workarounds can deadlock system! [ 27.583587][ T1] Only trusted guests should be used on this system. [ 27.585674][ T1] kvm [1]: IPA Size Limit: 44 bits [ 27.783329][ T1] kvm [1]: vgic interrupt IRQ9 [ 27.789559][ T1] kvm [1]: Hyp mode initialized successfully [ 28.368198][ T1] Initialise system trusted keyrings [ 28.392435][ T1] workingset: timestamp_bits=42 max_order=19 bucket_order=0 [ 29.012731][ T1] zbud: loaded [ 29.154903][ T1] DLM installed [ 29.332484][ T1] squashfs: version 4.0 (2009/01/31) Phillip Lougher [ 29.498511][ T1] NFS: Registering the id_resolver key type [ 29.503373][ T1] Key type id_resolver registered [ 29.503933][ T1] Key type id_legacy registered [ 29.512577][ T1] nfs4filelayout_init: NFSv4 File Layout Driver Registering... [ 29.514559][ T1] nfs4flexfilelayout_init: NFSv4 Flexfile Layout Driver Registering... [ 29.528283][ T1] fuse: init (API version 7.33) [ 29.583448][ T1] 9p: Installing v9fs 9p2000 file system support [ 29.755341][ T1] NET: Registered protocol family 38 [ 29.769724][ T1] xor: measuring software checksum speed [ 29.792404][ T1] 8regs : 589 MB/sec [ 29.815816][ T1] 32regs : 565 MB/sec [ 29.837613][ T1] arm64_neon : 713 MB/sec [ 29.859550][ T1] xor: using function: arm64_neon (713 MB/sec) [ 29.861667][ T1] async_tx: api initialized (async) [ 29.862357][ T1] Key type asymmetric registered [ 29.863159][ T1] Asymmetric key parser 'x509' registered [ 29.863922][ T1] Asymmetric key parser 'pkcs8' registered [ 29.864411][ T1] Key type pkcs7_test registered [ 29.864860][ T1] Asymmetric key parser 'tpm_parser' registered [ 29.885537][ T1] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 244) [ 29.900973][ T1] io scheduler mq-deadline registered [ 29.901725][ T1] io scheduler kyber registered [ 29.916638][ T1] io scheduler bfq registered [ 30.034136][ T1] pl061_gpio 9030000.pl061: PL061 GPIO chip registered [ 30.113999][ T1] pci-host-generic 4010000000.pcie: host bridge /pcie@10000000 ranges: [ 30.123136][ T1] pci-host-generic 4010000000.pcie: IO 0x003eff0000..0x003effffff -> 0x0000000000 [ 30.128557][ T1] pci-host-generic 4010000000.pcie: MEM 0x0010000000..0x003efeffff -> 0x0010000000 [ 30.138065][ T1] pci-host-generic 4010000000.pcie: MEM 0x8000000000..0xffffffffff -> 0x8000000000 [ 30.144002][ T1] pci-host-generic 4010000000.pcie: Memory resource size exceeds max for 32 bits [ 30.166221][ T1] pci-host-generic 4010000000.pcie: ECAM at [mem 0x4010000000-0x401fffffff] for [bus 00-ff] [ 30.184466][ T1] pci-host-generic 4010000000.pcie: PCI host bridge to bus 0000:00 [ 30.187863][ T1] pci_bus 0000:00: root bus resource [bus 00-ff] [ 30.190080][ T1] pci_bus 0000:00: root bus resource [io 0x0000-0xffff] [ 30.191051][ T1] pci_bus 0000:00: root bus resource [mem 0x10000000-0x3efeffff] [ 30.191585][ T1] pci_bus 0000:00: root bus resource [mem 0x8000000000-0xffffffffff] [ 30.196979][ T1] pci 0000:00:00.0: [1b36:0008] type 00 class 0x060000 [ 30.221893][ T1] pci 0000:00:01.0: [1af4:1005] type 00 class 0x00ff00 [ 30.224746][ T1] pci 0000:00:01.0: reg 0x10: [io 0x0000-0x001f] [ 30.227630][ T1] pci 0000:00:01.0: reg 0x20: [mem 0x00000000-0x00003fff 64bit pref] [ 30.242451][ T1] pci 0000:00:02.0: [1af4:1000] type 00 class 0x020000 [ 30.243584][ T1] pci 0000:00:02.0: reg 0x10: [io 0x0000-0x001f] [ 30.244229][ T1] pci 0000:00:02.0: reg 0x14: [mem 0x00000000-0x00000fff] [ 30.245304][ T1] pci 0000:00:02.0: reg 0x20: [mem 0x00000000-0x00003fff 64bit pref] [ 30.245981][ T1] pci 0000:00:02.0: reg 0x30: [mem 0x00000000-0x0003ffff pref] [ 30.261450][ T1] pci 0000:00:03.0: [1af4:1001] type 00 class 0x010000 [ 30.262587][ T1] pci 0000:00:03.0: reg 0x10: [io 0x0000-0x007f] [ 30.263262][ T1] pci 0000:00:03.0: reg 0x14: [mem 0x00000000-0x00000fff] [ 30.264327][ T1] pci 0000:00:03.0: reg 0x20: [mem 0x00000000-0x00003fff 64bit pref] [ 30.287252][ T1] pci 0000:00:02.0: BAR 6: assigned [mem 0x10000000-0x1003ffff pref] [ 30.288549][ T1] pci 0000:00:01.0: BAR 4: assigned [mem 0x8000000000-0x8000003fff 64bit pref] [ 30.292228][ T1] pci 0000:00:02.0: BAR 4: assigned [mem 0x8000004000-0x8000007fff 64bit pref] [ 30.292975][ T1] pci 0000:00:03.0: BAR 4: assigned [mem 0x8000008000-0x800000bfff 64bit pref] [ 30.293576][ T1] pci 0000:00:02.0: BAR 1: assigned [mem 0x10040000-0x10040fff] [ 30.294064][ T1] pci 0000:00:03.0: BAR 1: assigned [mem 0x10041000-0x10041fff] [ 30.294538][ T1] pci 0000:00:03.0: BAR 0: assigned [io 0x1000-0x107f] [ 30.295015][ T1] pci 0000:00:01.0: BAR 0: assigned [io 0x1080-0x109f] [ 30.295505][ T1] pci 0000:00:02.0: BAR 0: assigned [io 0x10a0-0x10bf] [ 30.341074][ T1] usbcore: registered new interface driver udlfb [ 30.395832][ T1] uvesafb: failed to execute /sbin/v86d [ 30.396470][ T1] uvesafb: make sure that the v86d helper is installed and executable [ 30.397175][ T1] uvesafb: Getting VBE info block failed (eax=0x4f00, err=-2) [ 30.397821][ T1] uvesafb: vbe_init() failed with -22 [ 30.403099][ T1] uvesafb: probe of uvesafb.0 failed with error -22 [ 30.408000][ T1] IPMI message handler: version 39.2 [ 30.415093][ T1] ipmi device interface [ 30.425759][ T1] ipmi_si: IPMI System Interface driver [ 30.493454][ T1] ipmi_si: Unable to find any System Interface(s) [ 30.552350][ T1] EINJ: ACPI disabled. [ 30.825005][ T1] virtio-pci 0000:00:01.0: enabling device (0000 -> 0003) [ 30.864634][ T1] virtio-pci 0000:00:02.0: enabling device (0000 -> 0003) [ 30.888128][ T1] virtio-pci 0000:00:03.0: enabling device (0000 -> 0003) [ 37.672313][ T1] N_HDLC line discipline registered with maxframe=4096 [ 37.676847][ T1] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled [ 37.953563][ T1] Cyclades driver 2.6 [ 37.973872][ T1] Initializing Nozomi driver 2.1d [ 38.002081][ T1] RocketPort device driver module, version 2.09, 12-June-2003 [ 38.006055][ T1] No rocketport ports found; unloading driver [ 38.153159][ T2297] random: fast init done [ 38.185167][ T2297] random: crng init done [ 38.310477][ T1] [drm] Initialized vgem 1.0.0 20120112 for vgem on minor 0 [ 38.413120][ T1] [drm] Initialized vkms 1.0.0 20180514 for vkms on minor 1 [ 38.980211][ T1] Console: switching to colour frame buffer device 128x48 [ 39.034428][ T1] platform vkms: [drm] fb0: vkmsdrmfb frame buffer device [ 39.041962][ T1] usbcore: registered new interface driver udl [ 39.224450][ T15] cacheinfo: Unable to detect cache hierarchy for CPU 0 [ 39.884354][ T1] brd: module loaded [ 41.467751][ T1] loop: module loaded [ 42.400547][ C0] ------------[ cut here ]------------ [ 42.401395][ C0] WARNING: CPU: 0 PID: 13 at drivers/gpu/drm/vkms/vkms_crtc.c:21 vkms_vblank_simulate+0x26c/0x2f4 [ 42.402032][ C0] Modules linked in: [ 42.402847][ C0] CPU: 0 PID: 13 Comm: rcu_preempt Not tainted 5.12.0-rc2-syzkaller-00570-g88fe49249c99 #0 [ 42.403605][ C0] Hardware name: linux,dummy-virt (DT) [ 42.404314][ C0] pstate: 20000085 (nzCv daIf -PAN -UAO -TCO BTYPE=--) [ 42.404805][ C0] pc : vkms_vblank_simulate+0x26c/0x2f4 [ 42.405203][ C0] lr : vkms_vblank_simulate+0x90/0x2f4 [ 42.405596][ C0] sp : ffff00006a691360 [ 42.405946][ C0] x29: ffff00006a691360 x28: ffff00000c959e58 [ 42.406616][ C0] x27: dfff800000000000 x26: ffff00006a67c540 [ 42.407610][ C0] x25: 1fffe0000d4cf8b1 x24: 1fffe0000d4cf8aa [ 42.410023][ C0] x23: ffff00000c958d30 x22: 0000000000fe4c00 [ 42.411458][ C0] x21: ffff00006a67c540 x20: ffff00000c958e58 [ 42.413476][ C0] x19: ffff00000c959e58 x18: ffff00006a675b48 [ 42.415114][ C0] x17: 00000000000013e8 x16: 0000000000000007 [ 42.416977][ C0] x15: ffff8000197d1010 x14: 1fffe0000d4d2222 [ 42.417664][ C0] x13: 0000000000000001 x12: 0000000000000033 [ 42.418207][ C0] x11: 1fffe000015ca11e x10: 0000000000000007 [ 42.420960][ C0] x9 : 1fffe000015ca126 x8 : ffff800017d24c00 [ 42.423625][ C0] x7 : 00000000f1f1f1f1 x6 : dfff800000000000 [ 42.425980][ C0] x5 : 7fffffffffffffff x4 : 000000098b254750 [ 42.426958][ C0] x3 : 000000098c239350 x2 : 000000098b254750 [ 42.427681][ C0] x1 : 000000098c239350 x0 : 0000000000000002 [ 42.428794][ C0] Call trace: [ 42.429296][ C0] vkms_vblank_simulate+0x26c/0x2f4 [ 42.429903][ C0] __hrtimer_run_queues+0x590/0xe40 [ 42.430450][ C0] hrtimer_interrupt+0x2d4/0x810 [ 42.430916][ C0] arch_timer_handler_phys+0x4c/0x70 [ 42.431490][ C0] handle_percpu_devid_irq+0x19c/0x330 [ 42.431928][ C0] __handle_domain_irq+0x11c/0x1f0 [ 42.432345][ C0] gic_handle_irq+0x5c/0x1b0 [ 42.432777][ C0] el1_irq+0xb4/0x180 [ 42.433196][ C0] _raw_spin_unlock_irq+0x80/0x15c [ 42.433638][ C0] finish_task_switch.isra.0+0x1b0/0x690 [ 42.434199][ C0] __schedule+0x814/0x1ac0 [ 42.434632][ C0] schedule+0xac/0x230 [ 42.435065][ C0] schedule_timeout+0x104/0x1f0 [ 42.435484][ C0] rcu_gp_kthread+0x8ec/0x2e9c [ 42.435914][ C0] kthread+0x320/0x3bc [ 42.436333][ C0] ret_from_fork+0x10/0x3c [ 42.437262][ C0] Kernel panic - not syncing: panic_on_warn set ... [ 42.438092][ C0] CPU: 0 PID: 13 Comm: rcu_preempt Not tainted 5.12.0-rc2-syzkaller-00570-g88fe49249c99 #0 [ 42.438942][ C0] Hardware name: linux,dummy-virt (DT) [ 42.439512][ C0] Call trace: [ 42.439918][ C0] dump_backtrace+0x0/0x3e0 [ 42.440403][ C0] show_stack+0x18/0x70 [ 42.440810][ C0] dump_stack+0x120/0x1a8 [ 42.441226][ C0] panic+0x31c/0x5c4 [ 42.441673][ C0] __warn+0x198/0x2f0 [ 42.442069][ C0] report_bug+0x154/0x210 [ 42.442476][ C0] bug_handler+0x38/0x90 [ 42.442905][ C0] brk_handler+0x114/0x230 [ 42.443379][ C0] do_debug_exception+0xc4/0x3b0 [ 42.443813][ C0] el1_dbg+0x60/0x80 [ 42.444212][ C0] el1_sync_handler+0x9c/0xd0 [ 42.444629][ C0] el1_sync+0x70/0x100 [ 42.445111][ C0] vkms_vblank_simulate+0x26c/0x2f4 [ 42.445532][ C0] __hrtimer_run_queues+0x590/0xe40 [ 42.445957][ C0] hrtimer_interrupt+0x2d4/0x810 [ 42.446371][ C0] arch_timer_handler_phys+0x4c/0x70 [ 42.446897][ C0] handle_percpu_devid_irq+0x19c/0x330 [ 42.448983][ C0] __handle_domain_irq+0x11c/0x1f0 [ 42.451317][ C0] gic_handle_irq+0x5c/0x1b0 [ 42.453363][ C0] el1_irq+0xb4/0x180 [ 42.454718][ C0] _raw_spin_unlock_irq+0x80/0x15c [ 42.456297][ C0] finish_task_switch.isra.0+0x1b0/0x690 [ 42.456727][ C0] __schedule+0x814/0x1ac0 [ 42.457047][ C0] schedule+0xac/0x230 [ 42.457349][ C0] schedule_timeout+0x104/0x1f0 [ 42.457717][ C0] rcu_gp_kthread+0x8ec/0x2e9c [ 42.458074][ C0] kthread+0x320/0x3bc [ 42.458417][ C0] ret_from_fork+0x10/0x3c [ 42.460443][ C0] SMP: stopping secondary CPUs [ 42.464278][ C0] Dumping ftrace buffer: [ 42.465892][ C0] (ftrace buffer empty) [ 42.466981][ C0] Kernel Offset: disabled [ 42.467439][ C0] CPU features: 0x00240022,61002082 [ 42.468348][ C0] Memory Limit: none [ 42.469978][ C0] Rebooting in 1 seconds..