[ 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 [ 0.000154][ T0] sched_clock: 56 bits at 62MHz, resolution 16ns, wraps every 4398046511096ns [ 0.027333][ T0] Console: colour dummy device 80x25 [ 0.029082][ T0] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar [ 0.029742][ T0] ... MAX_LOCKDEP_SUBCLASSES: 8 [ 0.029914][ T0] ... MAX_LOCK_DEPTH: 48 [ 0.030042][ T0] ... MAX_LOCKDEP_KEYS: 8192 [ 0.030183][ T0] ... CLASSHASH_SIZE: 4096 [ 0.030320][ T0] ... MAX_LOCKDEP_ENTRIES: 32768 [ 0.030447][ T0] ... MAX_LOCKDEP_CHAINS: 65536 [ 0.030571][ T0] ... CHAINHASH_SIZE: 32768 [ 0.030695][ T0] memory used by lock dependency info: 6365 kB [ 0.030832][ T0] memory used for stack traces: 4224 kB [ 0.030959][ T0] per task-struct memory footprint: 1920 bytes [ 0.036131][ T0] Calibrating delay loop (skipped), value calculated using timer frequency.. 125.00 BogoMIPS (lpj=625000) [ 0.036688][ T0] pid_max: default: 32768 minimum: 301 [ 0.041633][ T0] LSM: Security Framework initializing [ 0.043662][ T0] Yama: becoming mindful. [ 0.046513][ T0] TOMOYO Linux initialized [ 0.048251][ T0] SELinux: Initializing. [ 0.053284][ T0] Mount-cache hash table entries: 4096 (order: 3, 32768 bytes, linear) [ 0.053613][ T0] Mountpoint-cache hash table entries: 4096 (order: 3, 32768 bytes, linear) [ 0.220029][ T1] Running RCU-tasks wait API self tests [ 0.373081][ T1] rcu: Hierarchical SRCU implementation. [ 0.379263][ T10] Callback from call_rcu_tasks_trace() invoked. [ 0.466169][ T1] EFI services will not be available. [ 0.480684][ T1] smp: Bringing up secondary CPUs ... [ 0.524045][ T0] Detected PIPT I-cache on CPU1 [ 0.527101][ T0] CPU1: Booted secondary processor 0x0000000001 [0x411fd070] [ 0.552551][ T1] smp: Brought up 1 node, 2 CPUs [ 0.553174][ T1] SMP: Total of 2 processors activated. [ 0.553451][ T1] CPU features: detected: 32-bit EL0 Support [ 0.553745][ T1] CPU features: detected: CRC32 instructions [ 0.554074][ T1] CPU features: detected: 32-bit EL1 Support [ 0.610211][ T9] Callback from call_rcu_tasks() invoked. [ 1.565422][ T1] CPU: All CPU(s) started at EL2 [ 1.576170][ T14] alternatives: patching kernel code [ 1.674812][ T1] devtmpfs: initialized [ 2.279474][ T1] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns [ 2.280812][ T1] futex hash table entries: 512 (order: 4, 65536 bytes, linear) [ 2.647523][ T1] DMI not present or invalid. [ 2.692910][ T1] NET: Registered protocol family 16 [ 2.857928][ T1] DMA: preallocated 256 KiB GFP_KERNEL pool for atomic allocations [ 2.865125][ T1] DMA: preallocated 256 KiB GFP_KERNEL|GFP_DMA pool for atomic allocations [ 2.878995][ T1] DMA: preallocated 256 KiB GFP_KERNEL|GFP_DMA32 pool for atomic allocations [ 2.883407][ T1] audit: initializing netlink subsys (disabled) [ 2.899872][ T34] audit: type=2000 audit(2.670:1): state=initialized audit_enabled=0 res=1 [ 3.107415][ T1] thermal_sys: Registered thermal governor 'step_wise' [ 3.107768][ T1] thermal_sys: Registered thermal governor 'power_allocator' [ 3.115561][ T1] cpuidle: using governor menu [ 3.117234][ T1] NET: Registered protocol family 42 [ 3.140310][ T1] hw-breakpoint: found 6 breakpoint and 4 watchpoint registers. [ 3.145695][ T1] ASID allocator initialised with 65536 entries [ 3.159718][ T1] Serial: AMBA PL011 UART driver [ 3.872323][ T1] 9000000.pl011: ttyAMA0 at MMIO 0x9000000 (irq = 48, base_baud = 0) is a PL011 rev1 [ 3.917021][ T1] printk: console [ttyAMA0] enabled [ 14.238731][ T1] HugeTLB registered 1.00 GiB page size, pre-allocated 0 pages [ 14.240650][ T1] HugeTLB registered 32.0 MiB page size, pre-allocated 0 pages [ 14.241538][ T1] HugeTLB registered 2.00 MiB page size, pre-allocated 0 pages [ 14.244633][ T1] HugeTLB registered 64.0 KiB page size, pre-allocated 0 pages [ 14.584183][ T1] cryptd: max_cpu_qlen set to 1000 [ 15.238818][ T1] raid6: neonx8 gen() 931 MB/s [ 15.427279][ T1] raid6: neonx8 xor() 501 MB/s [ 15.609486][ T1] raid6: neonx4 gen() 1010 MB/s [ 15.791669][ T1] raid6: neonx4 xor() 386 MB/s [ 15.971551][ T1] raid6: neonx2 gen() 958 MB/s [ 16.156250][ T1] raid6: neonx2 xor() 596 MB/s [ 16.357536][ T1] raid6: neonx1 gen() 621 MB/s [ 16.537105][ T1] raid6: neonx1 xor() 307 MB/s [ 16.722115][ T1] raid6: int64x8 gen() 304 MB/s [ 16.903355][ T1] raid6: int64x8 xor() 208 MB/s [ 17.084714][ T1] raid6: int64x4 gen() 354 MB/s [ 17.260626][ T1] raid6: int64x4 xor() 322 MB/s [ 17.441442][ T1] raid6: int64x2 gen() 609 MB/s [ 17.622393][ T1] raid6: int64x2 xor() 343 MB/s [ 17.804083][ T1] raid6: int64x1 gen() 413 MB/s [ 17.985160][ T1] raid6: int64x1 xor() 269 MB/s [ 17.985944][ T1] raid6: using algorithm neonx4 gen() 1010 MB/s [ 17.986504][ T1] raid6: .... xor() 386 MB/s, rmw enabled [ 17.987304][ T1] raid6: using neon recovery algorithm [ 18.039740][ T1] ACPI: Interpreter disabled. [ 18.117139][ T1] iommu: Default domain type: Translated [ 18.136254][ T1] vgaarb: loaded [ 18.225053][ T1] SCSI subsystem initialized [ 18.333578][ T1] usbcore: registered new interface driver usbfs [ 18.345695][ T1] usbcore: registered new interface driver hub [ 18.355758][ T1] usbcore: registered new device driver usb [ 18.470267][ T1] pps_core: LinuxPPS API ver. 1 registered [ 18.472299][ T1] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti [ 18.475930][ T1] PTP clock support registered [ 18.509181][ T1] EDAC MC: Ver: 3.0.0 [ 18.679512][ T1] Advanced Linux Sound Architecture Driver Initialized. [ 18.829826][ T1] Bluetooth: Core ver 2.22 [ 18.835300][ T1] NET: Registered protocol family 31 [ 18.835947][ T1] Bluetooth: HCI device and connection manager initialized [ 18.837349][ T1] Bluetooth: HCI socket layer initialized [ 18.838253][ T1] Bluetooth: L2CAP socket layer initialized [ 18.840516][ T1] Bluetooth: SCO socket layer initialized [ 18.843449][ T1] NET: Registered protocol family 8 [ 18.844115][ T1] NET: Registered protocol family 20 [ 18.850927][ T1] NetLabel: Initializing [ 18.851852][ T1] NetLabel: domain hash size = 128 [ 18.852385][ T1] NetLabel: protocols = UNLABELED CIPSOv4 CALIPSO [ 18.863061][ T1] NetLabel: unlabeled traffic allowed by default [ 18.890440][ T1] nfc: nfc_init: NFC Core ver 0.1 [ 18.909258][ T1] NET: Registered protocol family 39 [ 18.934611][ T1] clocksource: Switched to clocksource arch_sys_counter [ 25.998158][ T1] VFS: Disk quotas dquot_6.6.0 [ 26.002623][ T1] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes) [ 26.020965][ T1] FS-Cache: Loaded [ 26.052061][ T1] CacheFiles: Loaded [ 26.068284][ T1] TOMOYO: 2.6.0 [ 26.069340][ T1] Mandatory Access Control activated. [ 26.092566][ T1] pnp: PnP ACPI: disabled [ 27.203280][ T1] NET: Registered protocol family 2 [ 27.253043][ T1] tcp_listen_portaddr_hash hash table entries: 1024 (order: 4, 81920 bytes, linear) [ 27.261236][ T1] TCP established hash table entries: 16384 (order: 5, 131072 bytes, linear) [ 27.280515][ T1] TCP bind hash table entries: 16384 (order: 8, 1179648 bytes, linear) [ 27.291415][ T1] TCP: Hash tables configured (established 16384 bind 16384) [ 27.308483][ T1] MPTCP token hash table entries: 2048 (order: 5, 180224 bytes, linear) [ 27.315938][ T1] UDP hash table entries: 1024 (order: 5, 163840 bytes, linear) [ 27.320873][ T1] UDP-Lite hash table entries: 1024 (order: 5, 163840 bytes, linear) [ 27.336414][ T1] NET: Registered protocol family 1 [ 27.366320][ T1] RPC: Registered named UNIX socket transport module. [ 27.367237][ T1] RPC: Registered udp transport module. [ 27.367729][ T1] RPC: Registered tcp transport module. [ 27.368223][ T1] RPC: Registered tcp NFSv4.1 backchannel transport module. [ 27.402006][ T1] NET: Registered protocol family 44 [ 27.403183][ T1] PCI: CLS 0 bytes, default 64 [ 27.515622][ T1] hw perfevents: enabled with armv8_pmuv3 PMU driver, 5 counters available [ 27.525315][ T1] kvm [1]: Guests without required CPU erratum workarounds can deadlock system! [ 27.525315][ T1] Only trusted guests should be used on this system. [ 27.528537][ T1] kvm [1]: IPA Size Limit: 44 bits [ 27.762971][ T1] kvm [1]: vgic interrupt IRQ9 [ 27.770290][ T1] kvm [1]: Hyp mode initialized successfully [ 28.301068][ T1] Initialise system trusted keyrings [ 28.325841][ T1] workingset: timestamp_bits=42 max_order=19 bucket_order=0 [ 29.101186][ T1] zbud: loaded [ 29.252280][ T1] DLM installed [ 29.382223][ T1] squashfs: version 4.0 (2009/01/31) Phillip Lougher [ 29.559816][ T1] NFS: Registering the id_resolver key type [ 29.561561][ T1] Key type id_resolver registered [ 29.562190][ T1] Key type id_legacy registered [ 29.570133][ T1] nfs4filelayout_init: NFSv4 File Layout Driver Registering... [ 29.572100][ T1] nfs4flexfilelayout_init: NFSv4 Flexfile Layout Driver Registering... [ 29.606015][ T1] fuse: init (API version 7.33) [ 29.718228][ T1] 9p: Installing v9fs 9p2000 file system support [ 29.895366][ T1] NET: Registered protocol family 38 [ 29.908183][ T1] xor: measuring software checksum speed [ 29.953121][ T1] 8regs : 580 MB/sec [ 29.980131][ T1] 32regs : 511 MB/sec [ 29.999445][ T1] arm64_neon : 690 MB/sec [ 30.000169][ T1] xor: using function: arm64_neon (690 MB/sec) [ 30.002012][ T1] async_tx: api initialized (async) [ 30.002701][ T1] Key type asymmetric registered [ 30.016294][ T1] Asymmetric key parser 'x509' registered [ 30.017267][ T1] Asymmetric key parser 'pkcs8' registered [ 30.017809][ T1] Key type pkcs7_test registered [ 30.018259][ T1] Asymmetric key parser 'tpm_parser' registered [ 30.040077][ T1] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 244) [ 30.064560][ T1] io scheduler mq-deadline registered [ 30.067372][ T1] io scheduler kyber registered [ 30.079126][ T1] io scheduler bfq registered [ 30.185890][ T1] pl061_gpio 9030000.pl061: PL061 GPIO chip registered [ 30.280179][ T1] pci-host-generic 4010000000.pcie: host bridge /pcie@10000000 ranges: [ 30.285743][ T1] pci-host-generic 4010000000.pcie: IO 0x003eff0000..0x003effffff -> 0x0000000000 [ 30.288699][ T1] pci-host-generic 4010000000.pcie: MEM 0x0010000000..0x003efeffff -> 0x0010000000 [ 30.289883][ T1] pci-host-generic 4010000000.pcie: MEM 0x8000000000..0xffffffffff -> 0x8000000000 [ 30.291930][ T1] pci-host-generic 4010000000.pcie: Memory resource size exceeds max for 32 bits [ 30.316326][ T1] pci-host-generic 4010000000.pcie: ECAM at [mem 0x4010000000-0x401fffffff] for [bus 00-ff] [ 30.327982][ T1] pci-host-generic 4010000000.pcie: PCI host bridge to bus 0000:00 [ 30.329206][ T1] pci_bus 0000:00: root bus resource [bus 00-ff] [ 30.329906][ T1] pci_bus 0000:00: root bus resource [io 0x0000-0xffff] [ 30.331101][ T1] pci_bus 0000:00: root bus resource [mem 0x10000000-0x3efeffff] [ 30.332172][ T1] pci_bus 0000:00: root bus resource [mem 0x8000000000-0xffffffffff] [ 30.337975][ T1] pci 0000:00:00.0: [1b36:0008] type 00 class 0x060000 [ 30.358506][ T1] pci 0000:00:01.0: [1af4:1005] type 00 class 0x00ff00 [ 30.361450][ T1] pci 0000:00:01.0: reg 0x10: [io 0x0000-0x001f] [ 30.367052][ T1] pci 0000:00:01.0: reg 0x20: [mem 0x00000000-0x00003fff 64bit pref] [ 30.382047][ T1] pci 0000:00:02.0: [1af4:1000] type 00 class 0x020000 [ 30.385947][ T1] pci 0000:00:02.0: reg 0x10: [io 0x0000-0x001f] [ 30.388601][ T1] pci 0000:00:02.0: reg 0x14: [mem 0x00000000-0x00000fff] [ 30.391028][ T1] pci 0000:00:02.0: reg 0x20: [mem 0x00000000-0x00003fff 64bit pref] [ 30.393139][ T1] pci 0000:00:02.0: reg 0x30: [mem 0x00000000-0x0003ffff pref] [ 30.406572][ T1] pci 0000:00:03.0: [1af4:1001] type 00 class 0x010000 [ 30.408921][ T1] pci 0000:00:03.0: reg 0x10: [io 0x0000-0x007f] [ 30.410885][ T1] pci 0000:00:03.0: reg 0x14: [mem 0x00000000-0x00000fff] [ 30.413296][ T1] pci 0000:00:03.0: reg 0x20: [mem 0x00000000-0x00003fff 64bit pref] [ 30.441619][ T1] pci 0000:00:02.0: BAR 6: assigned [mem 0x10000000-0x1003ffff pref] [ 30.445237][ T1] pci 0000:00:01.0: BAR 4: assigned [mem 0x8000000000-0x8000003fff 64bit pref] [ 30.448999][ T1] pci 0000:00:02.0: BAR 4: assigned [mem 0x8000004000-0x8000007fff 64bit pref] [ 30.452448][ T1] pci 0000:00:03.0: BAR 4: assigned [mem 0x8000008000-0x800000bfff 64bit pref] [ 30.459369][ T1] pci 0000:00:02.0: BAR 1: assigned [mem 0x10040000-0x10040fff] [ 30.460153][ T1] pci 0000:00:03.0: BAR 1: assigned [mem 0x10041000-0x10041fff] [ 30.460816][ T1] pci 0000:00:03.0: BAR 0: assigned [io 0x1000-0x107f] [ 30.461439][ T1] pci 0000:00:01.0: BAR 0: assigned [io 0x1080-0x109f] [ 30.462054][ T1] pci 0000:00:02.0: BAR 0: assigned [io 0x10a0-0x10bf] [ 30.505548][ T1] usbcore: registered new interface driver udlfb [ 30.558310][ T1] uvesafb: failed to execute /sbin/v86d [ 30.559003][ T1] uvesafb: make sure that the v86d helper is installed and executable [ 30.559874][ T1] uvesafb: Getting VBE info block failed (eax=0x4f00, err=-2) [ 30.560691][ T1] uvesafb: vbe_init() failed with -22 [ 30.562841][ T1] uvesafb: probe of uvesafb.0 failed with error -22 [ 30.568869][ T1] IPMI message handler: version 39.2 [ 30.576855][ T1] ipmi device interface [ 30.581476][ T1] ipmi_si: IPMI System Interface driver [ 30.622412][ T1] ipmi_si: Unable to find any System Interface(s) [ 30.677508][ T1] EINJ: ACPI disabled. [ 31.032652][ T1] virtio-pci 0000:00:01.0: enabling device (0000 -> 0003) [ 31.080507][ T1] virtio-pci 0000:00:02.0: enabling device (0000 -> 0003) [ 31.153161][ T1] virtio-pci 0000:00:03.0: enabling device (0000 -> 0003) [ 37.905566][ T1] N_HDLC line discipline registered with maxframe=4096 [ 37.909416][ T1] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled [ 38.223140][ T1] Cyclades driver 2.6 [ 38.260837][ T1] Initializing Nozomi driver 2.1d [ 38.291499][ T1] RocketPort device driver module, version 2.09, 12-June-2003 [ 38.298506][ T1] No rocketport ports found; unloading driver [ 38.448255][ T2295] random: fast init done [ 38.579217][ T2295] random: crng init done [ 38.742133][ T1] [drm] Initialized vgem 1.0.0 20120112 for vgem on minor 0 [ 38.859767][ T1] [drm] Initialized vkms 1.0.0 20180514 for vkms on minor 1 [ 39.499279][ T1] Console: switching to colour frame buffer device 128x48 [ 39.547910][ T1] platform vkms: [drm] fb0: vkmsdrmfb frame buffer device [ 39.552051][ T1] usbcore: registered new interface driver udl [ 39.828740][ T15] cacheinfo: Unable to detect cache hierarchy for CPU 0 [ 40.522595][ T1] brd: module loaded [ 41.796422][ T1] loop: module loaded [ 43.394552][ T1] virtio_blk virtio2: [vda] 2097152 512-byte logical blocks (1.07 GB/1.00 GiB) [ 43.525510][ C1] ------------[ cut here ]------------ [ 43.529620][ C1] WARNING: CPU: 1 PID: 13 at drivers/gpu/drm/vkms/vkms_crtc.c:21 vkms_vblank_simulate+0x26c/0x2f4 [ 43.531937][ C1] Modules linked in: [ 43.532774][ C1] CPU: 1 PID: 13 Comm: rcu_preempt Not tainted 5.12.0-rc2-syzkaller-00570-g88fe49249c99 #0 [ 43.535976][ C1] Hardware name: linux,dummy-virt (DT) [ 43.539061][ C1] pstate: 20000085 (nzCv daIf -PAN -UAO -TCO BTYPE=--) [ 43.540593][ C1] pc : vkms_vblank_simulate+0x26c/0x2f4 [ 43.541610][ C1] lr : vkms_vblank_simulate+0x90/0x2f4 [ 43.543103][ C1] sp : ffff00006a6ba360 [ 43.544499][ C1] x29: ffff00006a6ba360 x28: ffff00000c825e58 [ 43.546635][ C1] x27: dfff800000000000 x26: ffff00006a6a5540 [ 43.548195][ C1] x25: 1fffe0000d4d4ab1 x24: 1fffe0000d4d4aaa [ 43.549717][ C1] x23: ffff00000c824d30 x22: 0000000000fe4c00 [ 43.551159][ C1] x21: ffff00006a6a5540 x20: ffff00000c824e58 [ 43.552584][ C1] x19: ffff00000c825e58 x18: ffff00006a69eb48 [ 43.553044][ C1] x17: 00000000000013e8 x16: 0000000000000007 [ 43.553719][ C1] x15: ffff8000197d1010 x14: 1fffe0000d4d7422 [ 43.554180][ C1] x13: 0000000000000001 x12: 0000000000000033 [ 43.555664][ C1] x11: 1fffe000015ca11e x10: 0000000000000007 [ 43.556606][ C1] x9 : 1fffe000015ca126 x8 : ffff800017d24c00 [ 43.558183][ C1] x7 : 00000000f1f1f1f1 x6 : dfff800000000000 [ 43.559463][ C1] x5 : 7fffffffffffffff x4 : 00000009d772ce80 [ 43.560887][ C1] x3 : 00000009d8711a80 x2 : 00000009d772ce80 [ 43.562715][ C1] x1 : 00000009d8711a80 x0 : 0000000000000002 [ 43.564892][ C1] Call trace: [ 43.565198][ C1] vkms_vblank_simulate+0x26c/0x2f4 [ 43.565533][ C1] __hrtimer_run_queues+0x590/0xe40 [ 43.565845][ C1] hrtimer_interrupt+0x2d4/0x810 [ 43.566123][ C1] arch_timer_handler_phys+0x4c/0x70 [ 43.566407][ C1] handle_percpu_devid_irq+0x19c/0x330 [ 43.566692][ C1] __handle_domain_irq+0x11c/0x1f0 [ 43.566962][ C1] gic_handle_irq+0x5c/0x1b0 [ 43.567208][ C1] el1_irq+0xb4/0x180 [ 43.567444][ C1] _raw_spin_unlock_irq+0x80/0x15c [ 43.567726][ C1] finish_task_switch.isra.0+0x1b0/0x690 [ 43.568026][ C1] __schedule+0x814/0x1ac0 [ 43.568289][ C1] schedule+0xac/0x230 [ 43.568533][ C1] schedule_timeout+0x104/0x1f0 [ 43.568777][ C1] rcu_gp_kthread+0x8ec/0x2e9c [ 43.569050][ C1] kthread+0x320/0x3bc [ 43.569285][ C1] ret_from_fork+0x10/0x3c [ 43.570063][ C1] Kernel panic - not syncing: panic_on_warn set ... [ 43.571735][ C1] CPU: 1 PID: 13 Comm: rcu_preempt Not tainted 5.12.0-rc2-syzkaller-00570-g88fe49249c99 #0 [ 43.573711][ C1] Hardware name: linux,dummy-virt (DT) [ 43.574304][ C1] Call trace: [ 43.575099][ C1] dump_backtrace+0x0/0x3e0 [ 43.576264][ C1] show_stack+0x18/0x70 [ 43.577286][ C1] dump_stack+0x120/0x1a8 [ 43.578235][ C1] panic+0x31c/0x5c4 [ 43.579545][ C1] __warn+0x198/0x2f0 [ 43.580626][ C1] report_bug+0x154/0x210 [ 43.581588][ C1] bug_handler+0x38/0x90 [ 43.582606][ C1] brk_handler+0x114/0x230 [ 43.586238][ C1] do_debug_exception+0xc4/0x3b0 [ 43.586727][ C1] el1_dbg+0x60/0x80 [ 43.586976][ C1] el1_sync_handler+0x9c/0xd0 [ 43.587239][ C1] el1_sync+0x70/0x100 [ 43.587488][ C1] vkms_vblank_simulate+0x26c/0x2f4 [ 43.587770][ C1] __hrtimer_run_queues+0x590/0xe40 [ 43.588031][ C1] hrtimer_interrupt+0x2d4/0x810 [ 43.588295][ C1] arch_timer_handler_phys+0x4c/0x70 [ 43.591614][ C1] handle_percpu_devid_irq+0x19c/0x330 [ 43.591940][ C1] __handle_domain_irq+0x11c/0x1f0 [ 43.592222][ C1] gic_handle_irq+0x5c/0x1b0 [ 43.592475][ C1] el1_irq+0xb4/0x180 [ 43.592722][ C1] _raw_spin_unlock_irq+0x80/0x15c [ 43.592995][ C1] finish_task_switch.isra.0+0x1b0/0x690 [ 43.594214][ C1] __schedule+0x814/0x1ac0 [ 43.594887][ C1] schedule+0xac/0x230 [ 43.595212][ C1] schedule_timeout+0x104/0x1f0 [ 43.595573][ C1] rcu_gp_kthread+0x8ec/0x2e9c [ 43.595899][ C1] kthread+0x320/0x3bc [ 43.596197][ C1] ret_from_fork+0x10/0x3c [ 43.599542][ C1] SMP: stopping secondary CPUs [ 43.601525][ C1] Dumping ftrace buffer: [ 43.602852][ C1] (ftrace buffer empty) [ 43.603897][ C1] Kernel Offset: disabled [ 43.604246][ C1] CPU features: 0x00240022,61002082 [ 43.605003][ C1] Memory Limit: none [ 43.606165][ C1] Rebooting in 1 seconds..