[ 0.000000][ T0] Booting Linux on physical CPU 0x0000000000 [0x411fd070] [ 0.000000][ T0] Linux version 5.12.0-rc3-syzkaller (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 0xbfc13ec0-0xbfc16fff] [ 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: 1604524K/2097152K available (69632K kernel code, 20950K rwdata, 24800K rodata, 1920K init, 13883K bss, 459860K 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 [ 0.000167][ T0] sched_clock: 56 bits at 62MHz, resolution 16ns, wraps every 4398046511096ns [ 0.028596][ T0] Console: colour dummy device 80x25 [ 0.031308][ T0] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar [ 0.031541][ T0] ... MAX_LOCKDEP_SUBCLASSES: 8 [ 0.031703][ T0] ... MAX_LOCK_DEPTH: 48 [ 0.031859][ T0] ... MAX_LOCKDEP_KEYS: 8192 [ 0.032013][ T0] ... CLASSHASH_SIZE: 4096 [ 0.032168][ T0] ... MAX_LOCKDEP_ENTRIES: 32768 [ 0.032326][ T0] ... MAX_LOCKDEP_CHAINS: 65536 [ 0.032480][ T0] ... CHAINHASH_SIZE: 32768 [ 0.032647][ T0] memory used by lock dependency info: 6365 kB [ 0.032805][ T0] memory used for stack traces: 4224 kB [ 0.032963][ T0] per task-struct memory footprint: 1920 bytes [ 0.038842][ T0] Calibrating delay loop (skipped), value calculated using timer frequency.. 125.00 BogoMIPS (lpj=625000) [ 0.040490][ T0] pid_max: default: 32768 minimum: 301 [ 0.044759][ T0] LSM: Security Framework initializing [ 0.046910][ T0] Yama: becoming mindful. [ 0.051897][ T0] TOMOYO Linux initialized [ 0.054056][ T0] SELinux: Initializing. [ 0.058745][ T0] Mount-cache hash table entries: 4096 (order: 3, 32768 bytes, linear) [ 0.059068][ T0] Mountpoint-cache hash table entries: 4096 (order: 3, 32768 bytes, linear) [ 0.255683][ T1] Running RCU-tasks wait API self tests [ 0.413618][ T1] rcu: Hierarchical SRCU implementation. [ 0.431248][ T10] Callback from call_rcu_tasks_trace() invoked. [ 0.477325][ T1] EFI services will not be available. [ 0.489043][ T1] smp: Bringing up secondary CPUs ... [ 0.519029][ T0] Detected PIPT I-cache on CPU1 [ 0.522454][ T0] CPU1: Booted secondary processor 0x0000000001 [0x411fd070] [ 0.549636][ T1] smp: Brought up 1 node, 2 CPUs [ 0.550184][ T1] SMP: Total of 2 processors activated. [ 0.550429][ T1] CPU features: detected: 32-bit EL0 Support [ 0.550676][ T1] CPU features: detected: CRC32 instructions [ 0.550965][ T1] CPU features: detected: 32-bit EL1 Support [ 0.659206][ T9] Callback from call_rcu_tasks() invoked. [ 1.132030][ T1] CPU: All CPU(s) started at EL2 [ 1.133855][ T14] alternatives: patching kernel code [ 1.230384][ T1] devtmpfs: initialized [ 1.783945][ T1] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns [ 1.789954][ T1] futex hash table entries: 512 (order: 4, 65536 bytes, linear) [ 2.116504][ T1] DMI not present or invalid. [ 2.164819][ T1] NET: Registered protocol family 16 [ 2.312560][ T1] DMA: preallocated 256 KiB GFP_KERNEL pool for atomic allocations [ 2.317830][ T1] DMA: preallocated 256 KiB GFP_KERNEL|GFP_DMA pool for atomic allocations [ 2.327799][ T1] DMA: preallocated 256 KiB GFP_KERNEL|GFP_DMA32 pool for atomic allocations [ 2.332607][ T1] audit: initializing netlink subsys (disabled) [ 2.345254][ T34] audit: type=2000 audit(2.160:1): state=initialized audit_enabled=0 res=1 [ 2.485082][ T1] thermal_sys: Registered thermal governor 'step_wise' [ 2.485416][ T1] thermal_sys: Registered thermal governor 'power_allocator' [ 2.503788][ T1] cpuidle: using governor menu [ 2.510701][ T1] hw-breakpoint: found 6 breakpoint and 4 watchpoint registers. [ 2.520475][ T1] ASID allocator initialised with 65536 entries [ 2.530379][ T1] Serial: AMBA PL011 UART driver [ 3.043871][ T1] 9000000.pl011: ttyAMA0 at MMIO 0x9000000 (irq = 48, base_baud = 0) is a PL011 rev1 [ 3.128970][ T1] printk: console [ttyAMA0] enabled [ 9.720572][ T1] HugeTLB registered 1.00 GiB page size, pre-allocated 0 pages [ 9.725588][ T1] HugeTLB registered 32.0 MiB page size, pre-allocated 0 pages [ 9.727466][ T1] HugeTLB registered 2.00 MiB page size, pre-allocated 0 pages [ 9.729111][ T1] HugeTLB registered 64.0 KiB page size, pre-allocated 0 pages [ 10.079594][ T1] cryptd: max_cpu_qlen set to 1000 [ 10.828914][ T1] raid6: neonx8 gen() 735 MB/s [ 11.010044][ T1] raid6: neonx8 xor() 360 MB/s [ 11.187035][ T1] raid6: neonx4 gen() 861 MB/s [ 11.365312][ T1] raid6: neonx4 xor() 402 MB/s [ 11.543833][ T1] raid6: neonx2 gen() 884 MB/s [ 11.723231][ T1] raid6: neonx2 xor() 330 MB/s [ 11.932427][ T1] raid6: neonx1 gen() 667 MB/s [ 12.110561][ T1] raid6: neonx1 xor() 349 MB/s [ 12.290974][ T1] raid6: int64x8 gen() 384 MB/s [ 12.470499][ T1] raid6: int64x8 xor() 318 MB/s [ 12.650201][ T1] raid6: int64x4 gen() 577 MB/s [ 12.829776][ T1] raid6: int64x4 xor() 402 MB/s [ 13.007822][ T1] raid6: int64x2 gen() 460 MB/s [ 13.186559][ T1] raid6: int64x2 xor() 352 MB/s [ 13.363268][ T1] raid6: int64x1 gen() 420 MB/s [ 13.540294][ T1] raid6: int64x1 xor() 272 MB/s [ 13.540825][ T1] raid6: using algorithm neonx2 gen() 884 MB/s [ 13.541206][ T1] raid6: .... xor() 330 MB/s, rmw enabled [ 13.541860][ T1] raid6: using neon recovery algorithm [ 13.574923][ T1] ACPI: Interpreter disabled. [ 13.622618][ T1] iommu: Default domain type: Translated [ 13.635050][ T1] vgaarb: loaded [ 13.691425][ T1] SCSI subsystem initialized [ 13.772105][ T1] usbcore: registered new interface driver usbfs [ 13.783357][ T1] usbcore: registered new interface driver hub [ 13.788547][ T1] usbcore: registered new device driver usb [ 13.858067][ T1] pps_core: LinuxPPS API ver. 1 registered [ 13.858568][ T1] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti [ 13.876844][ T1] PTP clock support registered [ 13.895391][ T1] EDAC MC: Ver: 3.0.0 [ 14.013265][ T1] Advanced Linux Sound Architecture Driver Initialized. [ 14.124919][ T1] NetLabel: Initializing [ 14.125421][ T1] NetLabel: domain hash size = 128 [ 14.125721][ T1] NetLabel: protocols = UNLABELED CIPSOv4 CALIPSO [ 14.131198][ T1] NetLabel: unlabeled traffic allowed by default [ 14.140562][ T1] nfc: nfc_init: NFC Core ver 0.1 [ 14.147395][ T1] NET: Registered protocol family 39 [ 14.171343][ T1] clocksource: Switched to clocksource arch_sys_counter [ 17.740677][ T1] VFS: Disk quotas dquot_6.6.0 [ 17.743818][ T1] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes) [ 17.755488][ T1] FS-Cache: Loaded [ 17.771790][ T1] CacheFiles: Loaded [ 17.782562][ T1] TOMOYO: 2.6.0 [ 17.783106][ T1] Mandatory Access Control activated. [ 17.796492][ T1] pnp: PnP ACPI: disabled [ 18.718611][ T1] NET: Registered protocol family 2 [ 18.762795][ T1] tcp_listen_portaddr_hash hash table entries: 1024 (order: 4, 81920 bytes, linear) [ 18.767957][ T1] TCP established hash table entries: 16384 (order: 5, 131072 bytes, linear) [ 18.787812][ T1] TCP bind hash table entries: 16384 (order: 8, 1179648 bytes, linear) [ 18.797752][ T1] TCP: Hash tables configured (established 16384 bind 16384) [ 18.809892][ T1] MPTCP token hash table entries: 2048 (order: 5, 180224 bytes, linear) [ 18.815346][ T1] UDP hash table entries: 1024 (order: 5, 163840 bytes, linear) [ 18.818809][ T1] UDP-Lite hash table entries: 1024 (order: 5, 163840 bytes, linear) [ 18.832370][ T1] NET: Registered protocol family 1 [ 18.833898][ T1] NET: Registered protocol family 44 [ 18.834705][ T1] PCI: CLS 0 bytes, default 64 [ 18.929440][ T1] hw perfevents: enabled with armv8_pmuv3 PMU driver, 5 counters available [ 18.944213][ T1] kvm [1]: Guests without required CPU erratum workarounds can deadlock system! [ 18.944213][ T1] Only trusted guests should be used on this system. [ 18.951914][ T1] kvm [1]: IPA Size Limit: 44 bits [ 19.111894][ T1] kvm [1]: vgic interrupt IRQ9 [ 19.117359][ T1] kvm [1]: Hyp mode initialized successfully [ 19.705233][ T1] Initialise system trusted keyrings [ 19.746754][ T1] workingset: timestamp_bits=42 max_order=19 bucket_order=0 [ 20.359078][ T1] zbud: loaded [ 20.487548][ T1] DLM installed [ 20.691699][ T1] fuse: init (API version 7.33) [ 20.894717][ T1] NET: Registered protocol family 38 [ 20.906990][ T1] xor: measuring software checksum speed [ 20.926785][ T1] 8regs : 695 MB/sec [ 20.947702][ T1] 32regs : 574 MB/sec [ 20.966212][ T1] arm64_neon : 777 MB/sec [ 20.966854][ T1] xor: using function: arm64_neon (777 MB/sec) [ 20.969569][ T1] async_tx: api initialized (async) [ 20.972734][ T1] Key type asymmetric registered [ 20.973661][ T1] Asymmetric key parser 'x509' registered [ 20.974215][ T1] Asymmetric key parser 'pkcs8' registered [ 20.974574][ T1] Key type pkcs7_test registered [ 20.974900][ T1] Asymmetric key parser 'tpm_parser' registered [ 20.994759][ T1] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 244) [ 21.004349][ T1] io scheduler mq-deadline registered [ 21.004886][ T1] io scheduler kyber registered [ 21.017065][ T1] io scheduler bfq registered [ 21.117720][ T1] pl061_gpio 9030000.pl061: PL061 GPIO chip registered [ 21.236089][ T1] pci-host-generic 4010000000.pcie: host bridge /pcie@10000000 ranges: [ 21.242418][ T1] pci-host-generic 4010000000.pcie: IO 0x003eff0000..0x003effffff -> 0x0000000000 [ 21.245606][ T1] pci-host-generic 4010000000.pcie: MEM 0x0010000000..0x003efeffff -> 0x0010000000 [ 21.246493][ T1] pci-host-generic 4010000000.pcie: MEM 0x8000000000..0xffffffffff -> 0x8000000000 [ 21.252357][ T1] pci-host-generic 4010000000.pcie: Memory resource size exceeds max for 32 bits [ 21.269990][ T1] pci-host-generic 4010000000.pcie: ECAM at [mem 0x4010000000-0x401fffffff] for [bus 00-ff] [ 21.286597][ T1] pci-host-generic 4010000000.pcie: PCI host bridge to bus 0000:00 [ 21.287988][ T1] pci_bus 0000:00: root bus resource [bus 00-ff] [ 21.291354][ T1] pci_bus 0000:00: root bus resource [io 0x0000-0xffff] [ 21.291962][ T1] pci_bus 0000:00: root bus resource [mem 0x10000000-0x3efeffff] [ 21.292462][ T1] pci_bus 0000:00: root bus resource [mem 0x8000000000-0xffffffffff] [ 21.297032][ T1] pci 0000:00:00.0: [1b36:0008] type 00 class 0x060000 [ 21.318996][ T1] pci 0000:00:01.0: [1af4:1005] type 00 class 0x00ff00 [ 21.323590][ T1] pci 0000:00:01.0: reg 0x10: [io 0x0000-0x001f] [ 21.324642][ T1] pci 0000:00:01.0: reg 0x20: [mem 0x00000000-0x00003fff 64bit pref] [ 21.338316][ T1] pci 0000:00:02.0: [1af4:1000] type 00 class 0x020000 [ 21.338957][ T1] pci 0000:00:02.0: reg 0x10: [io 0x0000-0x001f] [ 21.339397][ T1] pci 0000:00:02.0: reg 0x14: [mem 0x00000000-0x00000fff] [ 21.342514][ T1] pci 0000:00:02.0: reg 0x20: [mem 0x00000000-0x00003fff 64bit pref] [ 21.343026][ T1] pci 0000:00:02.0: reg 0x30: [mem 0x00000000-0x0003ffff pref] [ 21.357167][ T1] pci 0000:00:03.0: [1af4:1001] type 00 class 0x010000 [ 21.357892][ T1] pci 0000:00:03.0: reg 0x10: [io 0x0000-0x007f] [ 21.358344][ T1] pci 0000:00:03.0: reg 0x14: [mem 0x00000000-0x00000fff] [ 21.359097][ T1] pci 0000:00:03.0: reg 0x20: [mem 0x00000000-0x00003fff 64bit pref] [ 21.378747][ T1] pci 0000:00:02.0: BAR 6: assigned [mem 0x10000000-0x1003ffff pref] [ 21.379767][ T1] pci 0000:00:01.0: BAR 4: assigned [mem 0x8000000000-0x8000003fff 64bit pref] [ 21.382628][ T1] pci 0000:00:02.0: BAR 4: assigned [mem 0x8000004000-0x8000007fff 64bit pref] [ 21.383297][ T1] pci 0000:00:03.0: BAR 4: assigned [mem 0x8000008000-0x800000bfff 64bit pref] [ 21.383862][ T1] pci 0000:00:02.0: BAR 1: assigned [mem 0x10040000-0x10040fff] [ 21.384291][ T1] pci 0000:00:03.0: BAR 1: assigned [mem 0x10041000-0x10041fff] [ 21.384719][ T1] pci 0000:00:03.0: BAR 0: assigned [io 0x1000-0x107f] [ 21.385177][ T1] pci 0000:00:01.0: BAR 0: assigned [io 0x1080-0x109f] [ 21.385586][ T1] pci 0000:00:02.0: BAR 0: assigned [io 0x10a0-0x10bf] [ 21.422523][ T1] usbcore: registered new interface driver udlfb [ 21.481300][ T1] uvesafb: failed to execute /sbin/v86d [ 21.482879][ T1] uvesafb: make sure that the v86d helper is installed and executable [ 21.485668][ T1] uvesafb: Getting VBE info block failed (eax=0x4f00, err=-2) [ 21.488132][ T1] uvesafb: vbe_init() failed with -22 [ 21.495400][ T1] uvesafb: probe of uvesafb.0 failed with error -22 [ 21.499692][ T1] IPMI message handler: version 39.2 [ 21.504674][ T1] ipmi device interface [ 21.507917][ T1] ipmi_si: IPMI System Interface driver [ 21.554545][ T1] ipmi_si: Unable to find any System Interface(s) [ 21.585219][ T1] EINJ: ACPI disabled. [ 21.795653][ T1] virtio-pci 0000:00:01.0: enabling device (0000 -> 0003) [ 21.822036][ T1] virtio-pci 0000:00:02.0: enabling device (0000 -> 0003) [ 21.844917][ T1] virtio-pci 0000:00:03.0: enabling device (0000 -> 0003) [ 27.366244][ T1] N_HDLC line discipline registered with maxframe=4096 [ 27.368930][ T1] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled [ 27.601487][ T1] Cyclades driver 2.6 [ 27.609372][ T1] Initializing Nozomi driver 2.1d [ 27.638788][ T1] RocketPort device driver module, version 2.09, 12-June-2003 [ 27.641528][ T1] No rocketport ports found; unloading driver [ 27.766313][ T1953] random: fast init done [ 27.802064][ T1953] random: crng init done [ 27.918545][ T1] [drm] Initialized vgem 1.0.0 20120112 for vgem on minor 0 [ 28.021831][ T1] [drm] Initialized vkms 1.0.0 20180514 for vkms on minor 1 [ 28.478554][ T1] Console: switching to colour frame buffer device 128x48 [ 28.533996][ T1] platform vkms: [drm] fb0: vkmsdrmfb frame buffer device [ 28.563760][ T1] usbcore: registered new interface driver udl [ 28.735446][ T15] cacheinfo: Unable to detect cache hierarchy for CPU 0 [ 29.591995][ T1] brd: module loaded [ 30.842139][ C0] ------------[ cut here ]------------ [ 30.843670][ C0] WARNING: CPU: 0 PID: 7 at drivers/gpu/drm/vkms/vkms_crtc.c:21 vkms_vblank_simulate+0x26c/0x2f4 [ 30.844241][ C0] Modules linked in: [ 30.844991][ C0] CPU: 0 PID: 7 Comm: kworker/u4:0 Not tainted 5.12.0-rc3-syzkaller #0 [ 30.845656][ C0] Hardware name: linux,dummy-virt (DT) [ 30.847355][ C0] Workqueue: 0x0 (events_unbound) [ 30.848496][ C0] pstate: 20000085 (nzCv daIf -PAN -UAO -TCO BTYPE=--) [ 30.848911][ C0] pc : vkms_vblank_simulate+0x26c/0x2f4 [ 30.849333][ C0] lr : vkms_vblank_simulate+0x90/0x2f4 [ 30.849682][ C0] sp : ffff00006ab34350 [ 30.850018][ C0] x29: ffff00006ab34350 x28: ffff00000e235e58 [ 30.850484][ C0] x27: dfff800000000000 x26: ffff00006ab1f540 [ 30.850991][ C0] x25: 1fffe0000d563eb1 x24: 1fffe0000d563eaa [ 30.851484][ C0] x23: ffff00000e234d30 x22: 0000000000fe4c00 [ 30.851997][ C0] x21: ffff00006ab1f540 x20: ffff00000e234e58 [ 30.852496][ C0] x19: ffff00000e235e58 x18: ffff00006ab18b48 [ 30.852876][ C0] x17: 00000000000013e8 x16: 0000000000000007 [ 30.853414][ C0] x15: ffff8000172a5010 x14: 1fffe0000d566820 [ 30.853917][ C0] x13: 0000000000000001 x12: 0000000000000033 [ 30.854416][ C0] x11: 1fffe0000113678e x10: 0000000000000007 [ 30.854912][ C0] x9 : 1fffe00001136796 x8 : ffff800015e08c00 [ 30.855394][ C0] x7 : 00000000f1f1f1f1 x6 : dfff800000000000 [ 30.855899][ C0] x5 : 7fffffffffffffff x4 : 00000006fb589300 [ 30.856399][ C0] x3 : 00000006fc56df00 x2 : 00000006fb589300 [ 30.856887][ C0] x1 : 00000006fc56df00 x0 : 0000000000000002 [ 30.870806][ C0] Call trace: [ 30.871208][ C0] vkms_vblank_simulate+0x26c/0x2f4 [ 30.871580][ C0] __hrtimer_run_queues+0x590/0xe40 [ 30.871942][ C0] hrtimer_interrupt+0x2e0/0x910 [ 30.872264][ C0] arch_timer_handler_phys+0x4c/0x70 [ 30.872610][ C0] handle_percpu_devid_irq+0x19c/0x330 [ 30.872963][ C0] __handle_domain_irq+0x11c/0x1f0 [ 30.873306][ C0] gic_handle_irq+0x5c/0x1b0 [ 30.873636][ C0] el1_irq+0xb4/0x180 [ 30.873953][ C0] _raw_spin_unlock_irq+0x80/0x15c [ 30.874301][ C0] finish_task_switch.isra.0+0x1b0/0x690 [ 30.874639][ C0] __schedule+0x814/0x1ac0 [ 30.874971][ C0] schedule+0xac/0x230 [ 30.875287][ C0] worker_thread+0x4f4/0xcd0 [ 30.875619][ C0] kthread+0x320/0x3bc [ 30.875942][ C0] ret_from_fork+0x10/0x3c [ 30.876763][ C0] Kernel panic - not syncing: panic_on_warn set ... [ 30.877424][ C0] CPU: 0 PID: 7 Comm: kworker/u4:0 Not tainted 5.12.0-rc3-syzkaller #0 [ 30.877803][ C0] Hardware name: linux,dummy-virt (DT) [ 30.878185][ C0] Workqueue: 0x0 (events_unbound) [ 30.878790][ C0] Call trace: [ 30.879073][ C0] dump_backtrace+0x0/0x3e0 [ 30.879389][ C0] show_stack+0x18/0x70 [ 30.879698][ C0] dump_stack+0x120/0x1a8 [ 30.880018][ C0] panic+0x31c/0x5c4 [ 30.880325][ C0] __warn+0x198/0x2f0 [ 30.880624][ C0] report_bug+0x154/0x210 [ 30.880949][ C0] bug_handler+0x38/0x90 [ 30.881289][ C0] brk_handler+0x114/0x230 [ 30.881600][ C0] do_debug_exception+0xc4/0x3b0 [ 30.881919][ C0] el1_dbg+0x60/0x80 [ 30.882233][ C0] el1_sync_handler+0x9c/0xd0 [ 30.882554][ C0] el1_sync+0x70/0x100 [ 30.882860][ C0] vkms_vblank_simulate+0x26c/0x2f4 [ 30.883200][ C0] __hrtimer_run_queues+0x590/0xe40 [ 30.883524][ C0] hrtimer_interrupt+0x2e0/0x910 [ 30.883847][ C0] arch_timer_handler_phys+0x4c/0x70 [ 30.884190][ C0] handle_percpu_devid_irq+0x19c/0x330 [ 30.884524][ C0] __handle_domain_irq+0x11c/0x1f0 [ 30.884844][ C0] gic_handle_irq+0x5c/0x1b0 [ 30.889496][ C0] el1_irq+0xb4/0x180 [ 30.890298][ C0] _raw_spin_unlock_irq+0x80/0x15c [ 30.890700][ C0] finish_task_switch.isra.0+0x1b0/0x690 [ 30.891139][ C0] __schedule+0x814/0x1ac0 [ 30.894201][ C0] schedule+0xac/0x230 [ 30.894533][ C0] worker_thread+0x4f4/0xcd0 [ 30.894855][ C0] kthread+0x320/0x3bc [ 30.895160][ C0] ret_from_fork+0x10/0x3c [ 30.897214][ C0] SMP: stopping secondary CPUs [ 30.900541][ C0] Dumping ftrace buffer: [ 30.902695][ C0] (ftrace buffer empty) [ 30.903946][ C0] Kernel Offset: disabled [ 30.904601][ C0] CPU features: 0x00240022,61002082 [ 30.905766][ C0] Memory Limit: none [ 30.907382][ C0] Rebooting in 1 seconds..