[ 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 [ 0.000118][ T0] sched_clock: 56 bits at 62MHz, resolution 16ns, wraps every 4398046511096ns [ 0.020242][ T0] Console: colour dummy device 80x25 [ 0.021635][ T0] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar [ 0.021816][ T0] ... MAX_LOCKDEP_SUBCLASSES: 8 [ 0.021930][ T0] ... MAX_LOCK_DEPTH: 48 [ 0.022041][ T0] ... MAX_LOCKDEP_KEYS: 8192 [ 0.022153][ T0] ... CLASSHASH_SIZE: 4096 [ 0.022264][ T0] ... MAX_LOCKDEP_ENTRIES: 32768 [ 0.022382][ T0] ... MAX_LOCKDEP_CHAINS: 65536 [ 0.022491][ T0] ... CHAINHASH_SIZE: 32768 [ 0.022603][ T0] memory used by lock dependency info: 6365 kB [ 0.022714][ T0] memory used for stack traces: 4224 kB [ 0.022824][ T0] per task-struct memory footprint: 1920 bytes [ 0.032255][ T0] Calibrating delay loop (skipped), value calculated using timer frequency.. 125.00 BogoMIPS (lpj=625000) [ 0.032751][ T0] pid_max: default: 32768 minimum: 301 [ 0.036962][ T0] LSM: Security Framework initializing [ 0.038566][ T0] Yama: becoming mindful. [ 0.042152][ T0] TOMOYO Linux initialized [ 0.043538][ T0] SELinux: Initializing. [ 0.046661][ T0] Mount-cache hash table entries: 4096 (order: 3, 32768 bytes, linear) [ 0.046897][ T0] Mountpoint-cache hash table entries: 4096 (order: 3, 32768 bytes, linear) [ 0.222353][ T1] Running RCU-tasks wait API self tests [ 0.374495][ T1] rcu: Hierarchical SRCU implementation. [ 0.393586][ T10] Callback from call_rcu_tasks_trace() invoked. [ 0.445825][ T1] EFI services will not be available. [ 0.457557][ T1] smp: Bringing up secondary CPUs ... [ 0.503481][ T0] Detected PIPT I-cache on CPU1 [ 0.506528][ T0] CPU1: Booted secondary processor 0x0000000001 [0x411fd070] [ 0.533496][ T1] smp: Brought up 1 node, 2 CPUs [ 0.534157][ T1] SMP: Total of 2 processors activated. [ 0.534414][ T1] CPU features: detected: 32-bit EL0 Support [ 0.534692][ T1] CPU features: detected: CRC32 instructions [ 0.534947][ T1] CPU features: detected: 32-bit EL1 Support [ 0.602316][ T9] Callback from call_rcu_tasks() invoked. [ 1.327067][ T1] CPU: All CPU(s) started at EL2 [ 1.329745][ T14] alternatives: patching kernel code [ 1.417273][ T1] devtmpfs: initialized [ 1.998186][ T1] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns [ 1.999441][ T1] futex hash table entries: 512 (order: 4, 65536 bytes, linear) [ 2.336240][ T1] DMI not present or invalid. [ 2.395590][ T1] NET: Registered protocol family 16 [ 2.531196][ T1] DMA: preallocated 256 KiB GFP_KERNEL pool for atomic allocations [ 2.535988][ T1] DMA: preallocated 256 KiB GFP_KERNEL|GFP_DMA pool for atomic allocations [ 2.544096][ T1] DMA: preallocated 256 KiB GFP_KERNEL|GFP_DMA32 pool for atomic allocations [ 2.547555][ T1] audit: initializing netlink subsys (disabled) [ 2.560825][ T34] audit: type=2000 audit(2.360:1): state=initialized audit_enabled=0 res=1 [ 2.716060][ T1] thermal_sys: Registered thermal governor 'step_wise' [ 2.716406][ T1] thermal_sys: Registered thermal governor 'power_allocator' [ 2.721790][ T1] cpuidle: using governor menu [ 2.723083][ T1] NET: Registered protocol family 42 [ 2.743221][ T1] hw-breakpoint: found 6 breakpoint and 4 watchpoint registers. [ 2.746254][ T1] ASID allocator initialised with 65536 entries [ 2.757547][ T1] Serial: AMBA PL011 UART driver [ 3.354836][ T1] 9000000.pl011: ttyAMA0 at MMIO 0x9000000 (irq = 48, base_baud = 0) is a PL011 rev1 [ 3.449432][ T1] printk: console [ttyAMA0] enabled [ 13.700875][ T1] HugeTLB registered 1.00 GiB page size, pre-allocated 0 pages [ 13.703437][ T1] HugeTLB registered 32.0 MiB page size, pre-allocated 0 pages [ 13.703883][ T1] HugeTLB registered 2.00 MiB page size, pre-allocated 0 pages [ 13.704334][ T1] HugeTLB registered 64.0 KiB page size, pre-allocated 0 pages [ 14.022034][ T1] cryptd: max_cpu_qlen set to 1000 [ 14.690263][ T1] raid6: neonx8 gen() 932 MB/s [ 14.870929][ T1] raid6: neonx8 xor() 480 MB/s [ 15.054241][ T1] raid6: neonx4 gen() 942 MB/s [ 15.240925][ T1] raid6: neonx4 xor() 437 MB/s [ 15.423258][ T1] raid6: neonx2 gen() 928 MB/s [ 15.602665][ T1] raid6: neonx2 xor() 404 MB/s [ 15.783202][ T1] raid6: neonx1 gen() 656 MB/s [ 15.961629][ T1] raid6: neonx1 xor() 432 MB/s [ 16.142319][ T1] raid6: int64x8 gen() 431 MB/s [ 16.322233][ T1] raid6: int64x8 xor() 291 MB/s [ 16.496218][ T1] raid6: int64x4 gen() 350 MB/s [ 16.673371][ T1] raid6: int64x4 xor() 315 MB/s [ 16.856810][ T1] raid6: int64x2 gen() 616 MB/s [ 17.032533][ T1] raid6: int64x2 xor() 353 MB/s [ 17.208021][ T1] raid6: int64x1 gen() 416 MB/s [ 17.384606][ T1] raid6: int64x1 xor() 258 MB/s [ 17.385195][ T1] raid6: using algorithm neonx4 gen() 942 MB/s [ 17.385664][ T1] raid6: .... xor() 437 MB/s, rmw enabled [ 17.386338][ T1] raid6: using neon recovery algorithm [ 17.429834][ T1] ACPI: Interpreter disabled. [ 17.495872][ T1] iommu: Default domain type: Translated [ 17.513829][ T1] vgaarb: loaded [ 17.583958][ T1] SCSI subsystem initialized [ 17.706893][ T1] usbcore: registered new interface driver usbfs [ 17.717621][ T1] usbcore: registered new interface driver hub [ 17.726681][ T1] usbcore: registered new device driver usb [ 17.766497][ T1] pps_core: LinuxPPS API ver. 1 registered [ 17.767111][ T1] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti [ 17.768766][ T1] PTP clock support registered [ 17.833003][ T1] EDAC MC: Ver: 3.0.0 [ 18.009407][ T1] Advanced Linux Sound Architecture Driver Initialized. [ 18.136002][ T1] Bluetooth: Core ver 2.22 [ 18.140459][ T1] NET: Registered protocol family 31 [ 18.141013][ T1] Bluetooth: HCI device and connection manager initialized [ 18.142262][ T1] Bluetooth: HCI socket layer initialized [ 18.142980][ T1] Bluetooth: L2CAP socket layer initialized [ 18.145085][ T1] Bluetooth: SCO socket layer initialized [ 18.146642][ T1] NET: Registered protocol family 8 [ 18.147093][ T1] NET: Registered protocol family 20 [ 18.154899][ T1] NetLabel: Initializing [ 18.155468][ T1] NetLabel: domain hash size = 128 [ 18.155852][ T1] NetLabel: protocols = UNLABELED CIPSOv4 CALIPSO [ 18.163047][ T1] NetLabel: unlabeled traffic allowed by default [ 18.178636][ T1] nfc: nfc_init: NFC Core ver 0.1 [ 18.183215][ T1] NET: Registered protocol family 39 [ 18.199234][ T1] clocksource: Switched to clocksource arch_sys_counter [ 26.132271][ T1] VFS: Disk quotas dquot_6.6.0 [ 26.137870][ T1] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes) [ 26.156985][ T1] FS-Cache: Loaded [ 26.187350][ T1] CacheFiles: Loaded [ 26.201462][ T1] TOMOYO: 2.6.0 [ 26.202328][ T1] Mandatory Access Control activated. [ 26.225273][ T1] pnp: PnP ACPI: disabled [ 27.796385][ T1] NET: Registered protocol family 2 [ 27.860657][ T1] tcp_listen_portaddr_hash hash table entries: 1024 (order: 4, 81920 bytes, linear) [ 27.864700][ T1] TCP established hash table entries: 16384 (order: 5, 131072 bytes, linear) [ 27.893139][ T1] TCP bind hash table entries: 16384 (order: 8, 1179648 bytes, linear) [ 27.910462][ T1] TCP: Hash tables configured (established 16384 bind 16384) [ 27.932260][ T1] MPTCP token hash table entries: 2048 (order: 5, 180224 bytes, linear) [ 27.941214][ T1] UDP hash table entries: 1024 (order: 5, 163840 bytes, linear) [ 27.948829][ T1] UDP-Lite hash table entries: 1024 (order: 5, 163840 bytes, linear) [ 27.965548][ T1] NET: Registered protocol family 1 [ 28.005141][ T1] RPC: Registered named UNIX socket transport module. [ 28.006143][ T1] RPC: Registered udp transport module. [ 28.006613][ T1] RPC: Registered tcp transport module. [ 28.007095][ T1] RPC: Registered tcp NFSv4.1 backchannel transport module. [ 28.048207][ T1] NET: Registered protocol family 44 [ 28.049456][ T1] PCI: CLS 0 bytes, default 64 [ 28.200230][ T1] hw perfevents: enabled with armv8_pmuv3 PMU driver, 5 counters available [ 28.210603][ T1] kvm [1]: Guests without required CPU erratum workarounds can deadlock system! [ 28.210603][ T1] Only trusted guests should be used on this system. [ 28.228644][ T1] kvm [1]: IPA Size Limit: 44 bits [ 28.505941][ T1] kvm [1]: vgic interrupt IRQ9 [ 28.512063][ T1] kvm [1]: Hyp mode initialized successfully [ 29.329807][ T1] Initialise system trusted keyrings [ 29.362640][ T1] workingset: timestamp_bits=42 max_order=19 bucket_order=0 [ 30.230823][ T1] zbud: loaded [ 30.473486][ T1] DLM installed [ 30.621584][ T1] squashfs: version 4.0 (2009/01/31) Phillip Lougher [ 30.828166][ T1] NFS: Registering the id_resolver key type [ 30.830131][ T1] Key type id_resolver registered [ 30.830868][ T1] Key type id_legacy registered [ 30.847818][ T1] nfs4filelayout_init: NFSv4 File Layout Driver Registering... [ 30.851068][ T1] nfs4flexfilelayout_init: NFSv4 Flexfile Layout Driver Registering... [ 30.879470][ T1] fuse: init (API version 7.33) [ 30.957168][ T1] 9p: Installing v9fs 9p2000 file system support [ 31.099712][ T1] NET: Registered protocol family 38 [ 31.171472][ T1] xor: measuring software checksum speed [ 31.195360][ T1] 8regs : 483 MB/sec [ 31.220056][ T1] 32regs : 530 MB/sec [ 31.240045][ T1] arm64_neon : 676 MB/sec [ 31.240800][ T1] xor: using function: arm64_neon (676 MB/sec) [ 31.242792][ T1] async_tx: api initialized (async) [ 31.243509][ T1] Key type asymmetric registered [ 31.247581][ T1] Asymmetric key parser 'x509' registered [ 31.248459][ T1] Asymmetric key parser 'pkcs8' registered [ 31.248950][ T1] Key type pkcs7_test registered [ 31.249386][ T1] Asymmetric key parser 'tpm_parser' registered [ 31.266074][ T1] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 244) [ 31.296992][ T1] io scheduler mq-deadline registered [ 31.297860][ T1] io scheduler kyber registered [ 31.318163][ T1] io scheduler bfq registered [ 31.501229][ T1] pl061_gpio 9030000.pl061: PL061 GPIO chip registered [ 31.657006][ T1] pci-host-generic 4010000000.pcie: host bridge /pcie@10000000 ranges: [ 31.663116][ T1] pci-host-generic 4010000000.pcie: IO 0x003eff0000..0x003effffff -> 0x0000000000 [ 31.666679][ T1] pci-host-generic 4010000000.pcie: MEM 0x0010000000..0x003efeffff -> 0x0010000000 [ 31.667477][ T1] pci-host-generic 4010000000.pcie: MEM 0x8000000000..0xffffffffff -> 0x8000000000 [ 31.669156][ T1] pci-host-generic 4010000000.pcie: Memory resource size exceeds max for 32 bits [ 31.692913][ T1] pci-host-generic 4010000000.pcie: ECAM at [mem 0x4010000000-0x401fffffff] for [bus 00-ff] [ 31.712254][ T1] pci-host-generic 4010000000.pcie: PCI host bridge to bus 0000:00 [ 31.717632][ T1] pci_bus 0000:00: root bus resource [bus 00-ff] [ 31.720561][ T1] pci_bus 0000:00: root bus resource [io 0x0000-0xffff] [ 31.730917][ T1] pci_bus 0000:00: root bus resource [mem 0x10000000-0x3efeffff] [ 31.736815][ T1] pci_bus 0000:00: root bus resource [mem 0x8000000000-0xffffffffff] [ 31.747108][ T1] pci 0000:00:00.0: [1b36:0008] type 00 class 0x060000 [ 31.775658][ T1] pci 0000:00:01.0: [1af4:1005] type 00 class 0x00ff00 [ 31.777927][ T1] pci 0000:00:01.0: reg 0x10: [io 0x0000-0x001f] [ 31.779739][ T1] pci 0000:00:01.0: reg 0x20: [mem 0x00000000-0x00003fff 64bit pref] [ 31.800947][ T1] pci 0000:00:02.0: [1af4:1000] type 00 class 0x020000 [ 31.802288][ T1] pci 0000:00:02.0: reg 0x10: [io 0x0000-0x001f] [ 31.803071][ T1] pci 0000:00:02.0: reg 0x14: [mem 0x00000000-0x00000fff] [ 31.805580][ T1] pci 0000:00:02.0: reg 0x20: [mem 0x00000000-0x00003fff 64bit pref] [ 31.807297][ T1] pci 0000:00:02.0: reg 0x30: [mem 0x00000000-0x0003ffff pref] [ 31.833564][ T1] pci 0000:00:03.0: [1af4:1001] type 00 class 0x010000 [ 31.839381][ T1] pci 0000:00:03.0: reg 0x10: [io 0x0000-0x007f] [ 31.840583][ T1] pci 0000:00:03.0: reg 0x14: [mem 0x00000000-0x00000fff] [ 31.842441][ T1] pci 0000:00:03.0: reg 0x20: [mem 0x00000000-0x00003fff 64bit pref] [ 31.873814][ T1] pci 0000:00:02.0: BAR 6: assigned [mem 0x10000000-0x1003ffff pref] [ 31.879352][ T1] pci 0000:00:01.0: BAR 4: assigned [mem 0x8000000000-0x8000003fff 64bit pref] [ 31.882459][ T1] pci 0000:00:02.0: BAR 4: assigned [mem 0x8000004000-0x8000007fff 64bit pref] [ 31.888220][ T1] pci 0000:00:03.0: BAR 4: assigned [mem 0x8000008000-0x800000bfff 64bit pref] [ 31.891700][ T1] pci 0000:00:02.0: BAR 1: assigned [mem 0x10040000-0x10040fff] [ 31.898134][ T1] pci 0000:00:03.0: BAR 1: assigned [mem 0x10041000-0x10041fff] [ 31.900427][ T1] pci 0000:00:03.0: BAR 0: assigned [io 0x1000-0x107f] [ 31.901320][ T1] pci 0000:00:01.0: BAR 0: assigned [io 0x1080-0x109f] [ 31.902081][ T1] pci 0000:00:02.0: BAR 0: assigned [io 0x10a0-0x10bf] [ 31.929153][ T1] usbcore: registered new interface driver udlfb [ 32.011332][ T1] uvesafb: failed to execute /sbin/v86d [ 32.012119][ T1] uvesafb: make sure that the v86d helper is installed and executable [ 32.013167][ T1] uvesafb: Getting VBE info block failed (eax=0x4f00, err=-2) [ 32.016591][ T1] uvesafb: vbe_init() failed with -22 [ 32.018966][ T1] uvesafb: probe of uvesafb.0 failed with error -22 [ 32.025961][ T1] IPMI message handler: version 39.2 [ 32.032199][ T1] ipmi device interface [ 32.037838][ T1] ipmi_si: IPMI System Interface driver [ 32.089627][ T1] ipmi_si: Unable to find any System Interface(s) [ 32.136653][ T1] EINJ: ACPI disabled. [ 32.395888][ T1] virtio-pci 0000:00:01.0: enabling device (0000 -> 0003) [ 32.426513][ T1] virtio-pci 0000:00:02.0: enabling device (0000 -> 0003) [ 32.448511][ T1] virtio-pci 0000:00:03.0: enabling device (0000 -> 0003) [ 38.429216][ T1] N_HDLC line discipline registered with maxframe=4096 [ 38.432792][ T1] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled [ 38.652264][ T1] Cyclades driver 2.6 [ 38.673137][ T1] Initializing Nozomi driver 2.1d [ 38.703077][ T1] RocketPort device driver module, version 2.09, 12-June-2003 [ 38.707961][ T1] No rocketport ports found; unloading driver [ 38.809284][ T2296] random: fast init done [ 38.821398][ T2296] random: crng init done [ 38.963396][ T1] [drm] Initialized vgem 1.0.0 20120112 for vgem on minor 0 [ 39.066896][ T1] [drm] Initialized vkms 1.0.0 20180514 for vkms on minor 1 [ 39.560558][ T1] Console: switching to colour frame buffer device 128x48 [ 39.619390][ T1] platform vkms: [drm] fb0: vkmsdrmfb frame buffer device [ 39.623803][ T1] usbcore: registered new interface driver udl [ 39.827743][ T15] cacheinfo: Unable to detect cache hierarchy for CPU 0 [ 40.728275][ T1] brd: module loaded [ 41.892460][ C0] ------------[ cut here ]------------ [ 41.893338][ C0] WARNING: CPU: 0 PID: 2395 at drivers/gpu/drm/vkms/vkms_crtc.c:21 vkms_vblank_simulate+0x26c/0x2f4 [ 41.906407][ C0] Modules linked in: [ 41.907323][ C0] CPU: 0 PID: 2395 Comm: kworker/u4:2 Not tainted 5.12.0-rc2-syzkaller-00570-g88fe49249c99 #0 [ 41.908085][ C0] Hardware name: linux,dummy-virt (DT) [ 41.908763][ C0] pstate: 20000085 (nzCv daIf -PAN -UAO -TCO BTYPE=--) [ 41.909231][ C0] pc : vkms_vblank_simulate+0x26c/0x2f4 [ 41.909678][ C0] lr : vkms_vblank_simulate+0x90/0x2f4 [ 41.910089][ C0] sp : ffff00006a691360 [ 41.910457][ C0] x29: ffff00006a691360 x28: ffff00000c941e58 [ 41.911086][ C0] x27: dfff800000000000 x26: ffff00006a67c540 [ 41.911639][ C0] x25: 1fffe0000d4cf8b1 x24: 1fffe0000d4cf8aa [ 41.912177][ C0] x23: ffff00000c940d30 x22: 0000000000fe4c00 [ 41.912721][ C0] x21: ffff00006a67c540 x20: ffff00000c940e58 [ 41.913262][ C0] x19: ffff00000c941e58 x18: ffff00006a69eb48 [ 41.913826][ C0] x17: 00000000000013e8 x16: 00000000000013ec [ 41.914531][ C0] x15: ffff8000197d1010 x14: 1fffe0000d4d2222 [ 41.915077][ C0] x13: 0000000000000001 x12: 0000000000000033 [ 41.915617][ C0] x11: 1fffe0000194a456 x10: 0000000000000007 [ 41.916154][ C0] x9 : 1fffe0000194a45e x8 : ffff800017d24c00 [ 41.916799][ C0] x7 : 00000000f1f1f1f1 x6 : dfff800000000000 [ 41.917337][ C0] x5 : 7fffffffffffffff x4 : 000000097aed8a00 [ 41.917940][ C0] x3 : 000000097bebd600 x2 : 000000097aed8a00 [ 41.918495][ C0] x1 : 000000097bebd600 x0 : 0000000000000002 [ 41.919415][ C0] Call trace: [ 41.919847][ C0] vkms_vblank_simulate+0x26c/0x2f4 [ 41.920262][ C0] __hrtimer_run_queues+0x590/0xe40 [ 41.920633][ C0] hrtimer_interrupt+0x2d4/0x810 [ 41.920986][ C0] arch_timer_handler_phys+0x4c/0x70 [ 41.921368][ C0] handle_percpu_devid_irq+0x19c/0x330 [ 41.921759][ C0] __handle_domain_irq+0x11c/0x1f0 [ 41.922111][ C0] gic_handle_irq+0x5c/0x1b0 [ 41.922468][ C0] el1_irq+0xb4/0x180 [ 41.922797][ C0] __schedule+0x90/0x1ac0 [ 41.923146][ C0] preempt_schedule_common+0xa4/0x2a0 [ 41.923497][ C0] preempt_schedule+0x60/0x6c [ 41.923830][ C0] _raw_spin_unlock_irqrestore+0x118/0x180 [ 41.924221][ C0] sched_move_task+0xfc/0x3a0 [ 41.938277][ C0] sched_autogroup_exit_task+0x10/0x20 [ 41.938910][ C0] do_exit+0x910/0x2290 [ 41.939266][ C0] call_usermodehelper_exec_async+0x348/0x454 [ 41.939673][ C0] ret_from_fork+0x10/0x3c [ 41.940545][ C0] Kernel panic - not syncing: panic_on_warn set ... [ 41.941255][ C0] CPU: 0 PID: 2395 Comm: kworker/u4:2 Not tainted 5.12.0-rc2-syzkaller-00570-g88fe49249c99 #0 [ 41.941752][ C0] Hardware name: linux,dummy-virt (DT) [ 41.942128][ C0] Call trace: [ 41.942427][ C0] dump_backtrace+0x0/0x3e0 [ 41.942775][ C0] show_stack+0x18/0x70 [ 41.943089][ C0] dump_stack+0x120/0x1a8 [ 41.943403][ C0] panic+0x31c/0x5c4 [ 41.943697][ C0] __warn+0x198/0x2f0 [ 41.950880][ C0] report_bug+0x154/0x210 [ 41.951274][ C0] bug_handler+0x38/0x90 [ 41.951591][ C0] brk_handler+0x114/0x230 [ 41.951920][ C0] do_debug_exception+0xc4/0x3b0 [ 41.952263][ C0] el1_dbg+0x60/0x80 [ 41.952567][ C0] el1_sync_handler+0x9c/0xd0 [ 41.952915][ C0] el1_sync+0x70/0x100 [ 41.953227][ C0] vkms_vblank_simulate+0x26c/0x2f4 [ 41.953589][ C0] __hrtimer_run_queues+0x590/0xe40 [ 41.958788][ C0] hrtimer_interrupt+0x2d4/0x810 [ 41.959242][ C0] arch_timer_handler_phys+0x4c/0x70 [ 41.959589][ C0] handle_percpu_devid_irq+0x19c/0x330 [ 41.959931][ C0] __handle_domain_irq+0x11c/0x1f0 [ 41.960264][ C0] gic_handle_irq+0x5c/0x1b0 [ 41.960612][ C0] el1_irq+0xb4/0x180 [ 41.960954][ C0] __schedule+0x90/0x1ac0 [ 41.961289][ C0] preempt_schedule_common+0xa4/0x2a0 [ 41.961639][ C0] preempt_schedule+0x60/0x6c [ 41.961994][ C0] _raw_spin_unlock_irqrestore+0x118/0x180 [ 41.962346][ C0] sched_move_task+0xfc/0x3a0 [ 41.962669][ C0] sched_autogroup_exit_task+0x10/0x20 [ 41.962994][ C0] do_exit+0x910/0x2290 [ 41.963323][ C0] call_usermodehelper_exec_async+0x348/0x454 [ 41.963692][ C0] ret_from_fork+0x10/0x3c [ 41.966117][ C0] SMP: stopping secondary CPUs [ 41.990899][ C0] Dumping ftrace buffer: [ 41.993445][ C0] (ftrace buffer empty) [ 41.994405][ C0] Kernel Offset: disabled [ 41.994747][ C0] CPU features: 0x00240022,61002082 [ 41.996086][ C0] Memory Limit: none [ 41.997549][ C0] Rebooting in 1 seconds..