[ 0.000000][ T0] Booting Linux on physical CPU 0x0000000000 [0x411fd070] [ 0.000000][ T0] Linux version 5.12.0-rc3-syzkaller-00020-g1df27313f50a (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: 1604452K/2097152K available (69632K kernel code, 20956K rwdata, 24812K rodata, 1920K init, 13885K bss, 459932K 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 [ 0.000201][ T0] sched_clock: 56 bits at 62MHz, resolution 16ns, wraps every 4398046511096ns [ 0.029351][ T0] Console: colour dummy device 80x25 [ 0.031796][ T0] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar [ 0.032015][ T0] ... MAX_LOCKDEP_SUBCLASSES: 8 [ 0.032199][ T0] ... MAX_LOCK_DEPTH: 48 [ 0.032368][ T0] ... MAX_LOCKDEP_KEYS: 8192 [ 0.032534][ T0] ... CLASSHASH_SIZE: 4096 [ 0.032698][ T0] ... MAX_LOCKDEP_ENTRIES: 32768 [ 0.032863][ T0] ... MAX_LOCKDEP_CHAINS: 65536 [ 0.033029][ T0] ... CHAINHASH_SIZE: 32768 [ 0.033209][ T0] memory used by lock dependency info: 6365 kB [ 0.033378][ T0] memory used for stack traces: 4224 kB [ 0.033579][ T0] per task-struct memory footprint: 1920 bytes [ 0.039453][ T0] Calibrating delay loop (skipped), value calculated using timer frequency.. 125.00 BogoMIPS (lpj=625000) [ 0.041030][ T0] pid_max: default: 32768 minimum: 301 [ 0.045641][ T0] LSM: Security Framework initializing [ 0.047891][ T0] Yama: becoming mindful. [ 0.052488][ T0] TOMOYO Linux initialized [ 0.054457][ T0] SELinux: Initializing. [ 0.059036][ T0] Mount-cache hash table entries: 4096 (order: 3, 32768 bytes, linear) [ 0.059364][ T0] Mountpoint-cache hash table entries: 4096 (order: 3, 32768 bytes, linear) [ 0.252637][ T1] Running RCU-tasks wait API self tests [ 0.427346][ T10] Callback from call_rcu_tasks_trace() invoked. [ 0.428926][ T1] rcu: Hierarchical SRCU implementation. [ 0.518894][ T1] EFI services will not be available. [ 0.531411][ T1] smp: Bringing up secondary CPUs ... [ 0.565837][ T0] Detected PIPT I-cache on CPU1 [ 0.569012][ T0] CPU1: Booted secondary processor 0x0000000001 [0x411fd070] [ 0.600024][ T1] smp: Brought up 1 node, 2 CPUs [ 0.602420][ T1] SMP: Total of 2 processors activated. [ 0.602751][ T1] CPU features: detected: 32-bit EL0 Support [ 0.603070][ T1] CPU features: detected: CRC32 instructions [ 0.603388][ T1] CPU features: detected: 32-bit EL1 Support [ 0.655564][ T9] Callback from call_rcu_tasks() invoked. [ 1.299415][ T1] CPU: All CPU(s) started at EL2 [ 1.303387][ T14] alternatives: patching kernel code [ 1.422931][ T1] devtmpfs: initialized [ 1.821199][ T1] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns [ 1.822441][ T1] futex hash table entries: 512 (order: 4, 65536 bytes, linear) [ 2.117859][ T1] DMI not present or invalid. [ 2.165209][ T1] NET: Registered protocol family 16 [ 2.332552][ T1] DMA: preallocated 256 KiB GFP_KERNEL pool for atomic allocations [ 2.339526][ T1] DMA: preallocated 256 KiB GFP_KERNEL|GFP_DMA pool for atomic allocations [ 2.351035][ T1] DMA: preallocated 256 KiB GFP_KERNEL|GFP_DMA32 pool for atomic allocations [ 2.355171][ T1] audit: initializing netlink subsys (disabled) [ 2.381865][ T34] audit: type=2000 audit(2.170:1): state=initialized audit_enabled=0 res=1 [ 2.589401][ T1] thermal_sys: Registered thermal governor 'step_wise' [ 2.589798][ T1] thermal_sys: Registered thermal governor 'power_allocator' [ 2.618371][ T1] cpuidle: using governor menu [ 2.631844][ T1] hw-breakpoint: found 6 breakpoint and 4 watchpoint registers. [ 2.640516][ T1] ASID allocator initialised with 65536 entries [ 2.654337][ T1] Serial: AMBA PL011 UART driver [ 3.354973][ T1] 9000000.pl011: ttyAMA0 at MMIO 0x9000000 (irq = 48, base_baud = 0) is a PL011 rev1 [ 3.429932][ T1] printk: console [ttyAMA0] enabled [ 11.612253][ T1] HugeTLB registered 1.00 GiB page size, pre-allocated 0 pages [ 11.617594][ T1] HugeTLB registered 32.0 MiB page size, pre-allocated 0 pages [ 11.619992][ T1] HugeTLB registered 2.00 MiB page size, pre-allocated 0 pages [ 11.622000][ T1] HugeTLB registered 64.0 KiB page size, pre-allocated 0 pages [ 12.104790][ T1] cryptd: max_cpu_qlen set to 1000 [ 12.886100][ T1] raid6: neonx8 gen() 770 MB/s [ 13.073646][ T1] raid6: neonx8 xor() 513 MB/s [ 13.254916][ T1] raid6: neonx4 gen() 1024 MB/s [ 13.436879][ T1] raid6: neonx4 xor() 404 MB/s [ 13.618985][ T1] raid6: neonx2 gen() 844 MB/s [ 13.798653][ T1] raid6: neonx2 xor() 387 MB/s [ 13.981287][ T1] raid6: neonx1 gen() 653 MB/s [ 14.162440][ T1] raid6: neonx1 xor() 275 MB/s [ 14.345203][ T1] raid6: int64x8 gen() 273 MB/s [ 14.523326][ T1] raid6: int64x8 xor() 221 MB/s [ 14.703379][ T1] raid6: int64x4 gen() 527 MB/s [ 14.885633][ T1] raid6: int64x4 xor() 344 MB/s [ 15.062353][ T1] raid6: int64x2 gen() 698 MB/s [ 15.239719][ T1] raid6: int64x2 xor() 472 MB/s [ 15.419073][ T1] raid6: int64x1 gen() 440 MB/s [ 15.598805][ T1] raid6: int64x1 xor() 290 MB/s [ 15.600611][ T1] raid6: using algorithm neonx4 gen() 1024 MB/s [ 15.601543][ T1] raid6: .... xor() 404 MB/s, rmw enabled [ 15.602292][ T1] raid6: using neon recovery algorithm [ 15.623213][ T1] ACPI: Interpreter disabled. [ 15.720326][ T1] iommu: Default domain type: Translated [ 15.732924][ T1] vgaarb: loaded [ 15.804380][ T1] SCSI subsystem initialized [ 15.872726][ T1] usbcore: registered new interface driver usbfs [ 15.883749][ T1] usbcore: registered new interface driver hub [ 15.887781][ T1] usbcore: registered new device driver usb [ 15.918880][ T1] pps_core: LinuxPPS API ver. 1 registered [ 15.919515][ T1] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti [ 15.921640][ T1] PTP clock support registered [ 15.983897][ T1] EDAC MC: Ver: 3.0.0 [ 16.194299][ T1] Advanced Linux Sound Architecture Driver Initialized. [ 16.319043][ T1] NetLabel: Initializing [ 16.321192][ T1] NetLabel: domain hash size = 128 [ 16.336410][ T1] NetLabel: protocols = UNLABELED CIPSOv4 CALIPSO [ 16.349232][ T1] NetLabel: unlabeled traffic allowed by default [ 16.396405][ T1] nfc: nfc_init: NFC Core ver 0.1 [ 16.413503][ T1] NET: Registered protocol family 39 [ 16.438230][ T1] clocksource: Switched to clocksource arch_sys_counter [ 20.459136][ T1] VFS: Disk quotas dquot_6.6.0 [ 20.462075][ T1] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes) [ 20.475213][ T1] FS-Cache: Loaded [ 20.500417][ T1] CacheFiles: Loaded [ 20.512698][ T1] TOMOYO: 2.6.0 [ 20.513390][ T1] Mandatory Access Control activated. [ 20.532569][ T1] pnp: PnP ACPI: disabled [ 21.671689][ T1] NET: Registered protocol family 2 [ 21.718193][ T1] tcp_listen_portaddr_hash hash table entries: 1024 (order: 4, 81920 bytes, linear) [ 21.719795][ T1] TCP established hash table entries: 16384 (order: 5, 131072 bytes, linear) [ 21.731056][ T1] TCP bind hash table entries: 16384 (order: 8, 1179648 bytes, linear) [ 21.741416][ T1] TCP: Hash tables configured (established 16384 bind 16384) [ 21.753115][ T1] MPTCP token hash table entries: 2048 (order: 5, 180224 bytes, linear) [ 21.758902][ T1] UDP hash table entries: 1024 (order: 5, 163840 bytes, linear) [ 21.761844][ T1] UDP-Lite hash table entries: 1024 (order: 5, 163840 bytes, linear) [ 21.772682][ T1] NET: Registered protocol family 1 [ 21.774097][ T1] NET: Registered protocol family 44 [ 21.774820][ T1] PCI: CLS 0 bytes, default 64 [ 21.872879][ T1] hw perfevents: enabled with armv8_pmuv3 PMU driver, 5 counters available [ 21.885862][ T1] kvm [1]: Guests without required CPU erratum workarounds can deadlock system! [ 21.885862][ T1] Only trusted guests should be used on this system. [ 21.893807][ T1] kvm [1]: IPA Size Limit: 44 bits [ 22.083447][ T1] kvm [1]: vgic interrupt IRQ9 [ 22.090403][ T1] kvm [1]: Hyp mode initialized successfully [ 22.682846][ T1] Initialise system trusted keyrings [ 22.723699][ T1] workingset: timestamp_bits=42 max_order=19 bucket_order=0 [ 23.473656][ T1] zbud: loaded [ 23.624709][ T1] DLM installed [ 23.821707][ T1] fuse: init (API version 7.33) [ 24.000388][ T1] NET: Registered protocol family 38 [ 24.019488][ T1] xor: measuring software checksum speed [ 24.039594][ T1] 8regs : 617 MB/sec [ 24.059268][ T1] 32regs : 583 MB/sec [ 24.077452][ T1] arm64_neon : 666 MB/sec [ 24.078202][ T1] xor: using function: arm64_neon (666 MB/sec) [ 24.080658][ T1] async_tx: api initialized (async) [ 24.082654][ T1] Key type asymmetric registered [ 24.083596][ T1] Asymmetric key parser 'x509' registered [ 24.084298][ T1] Asymmetric key parser 'pkcs8' registered [ 24.084773][ T1] Key type pkcs7_test registered [ 24.085213][ T1] Asymmetric key parser 'tpm_parser' registered [ 24.089268][ T1] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 244) [ 24.102907][ T1] io scheduler mq-deadline registered [ 24.103712][ T1] io scheduler kyber registered [ 24.118452][ T1] io scheduler bfq registered [ 24.204972][ T1] pl061_gpio 9030000.pl061: PL061 GPIO chip registered [ 24.279549][ T1] pci-host-generic 4010000000.pcie: host bridge /pcie@10000000 ranges: [ 24.285044][ T1] pci-host-generic 4010000000.pcie: IO 0x003eff0000..0x003effffff -> 0x0000000000 [ 24.301028][ T1] pci-host-generic 4010000000.pcie: MEM 0x0010000000..0x003efeffff -> 0x0010000000 [ 24.304364][ T1] pci-host-generic 4010000000.pcie: MEM 0x8000000000..0xffffffffff -> 0x8000000000 [ 24.313313][ T1] pci-host-generic 4010000000.pcie: Memory resource size exceeds max for 32 bits [ 24.334887][ T1] pci-host-generic 4010000000.pcie: ECAM at [mem 0x4010000000-0x401fffffff] for [bus 00-ff] [ 24.351652][ T1] pci-host-generic 4010000000.pcie: PCI host bridge to bus 0000:00 [ 24.353145][ T1] pci_bus 0000:00: root bus resource [bus 00-ff] [ 24.353941][ T1] pci_bus 0000:00: root bus resource [io 0x0000-0xffff] [ 24.354593][ T1] pci_bus 0000:00: root bus resource [mem 0x10000000-0x3efeffff] [ 24.355075][ T1] pci_bus 0000:00: root bus resource [mem 0x8000000000-0xffffffffff] [ 24.366030][ T1] pci 0000:00:00.0: [1b36:0008] type 00 class 0x060000 [ 24.393292][ T1] pci 0000:00:01.0: [1af4:1005] type 00 class 0x00ff00 [ 24.394797][ T1] pci 0000:00:01.0: reg 0x10: [io 0x0000-0x001f] [ 24.395939][ T1] pci 0000:00:01.0: reg 0x20: [mem 0x00000000-0x00003fff 64bit pref] [ 24.407928][ T1] pci 0000:00:02.0: [1af4:1000] type 00 class 0x020000 [ 24.409650][ T1] pci 0000:00:02.0: reg 0x10: [io 0x0000-0x001f] [ 24.410562][ T1] pci 0000:00:02.0: reg 0x14: [mem 0x00000000-0x00000fff] [ 24.411488][ T1] pci 0000:00:02.0: reg 0x20: [mem 0x00000000-0x00003fff 64bit pref] [ 24.414431][ T1] pci 0000:00:02.0: reg 0x30: [mem 0x00000000-0x0003ffff pref] [ 24.433138][ T1] pci 0000:00:03.0: [1af4:1001] type 00 class 0x010000 [ 24.436502][ T1] pci 0000:00:03.0: reg 0x10: [io 0x0000-0x007f] [ 24.441904][ T1] pci 0000:00:03.0: reg 0x14: [mem 0x00000000-0x00000fff] [ 24.445234][ T1] pci 0000:00:03.0: reg 0x20: [mem 0x00000000-0x00003fff 64bit pref] [ 24.470406][ T1] pci 0000:00:02.0: BAR 6: assigned [mem 0x10000000-0x1003ffff pref] [ 24.471867][ T1] pci 0000:00:01.0: BAR 4: assigned [mem 0x8000000000-0x8000003fff 64bit pref] [ 24.472906][ T1] pci 0000:00:02.0: BAR 4: assigned [mem 0x8000004000-0x8000007fff 64bit pref] [ 24.473803][ T1] pci 0000:00:03.0: BAR 4: assigned [mem 0x8000008000-0x800000bfff 64bit pref] [ 24.474608][ T1] pci 0000:00:02.0: BAR 1: assigned [mem 0x10040000-0x10040fff] [ 24.475216][ T1] pci 0000:00:03.0: BAR 1: assigned [mem 0x10041000-0x10041fff] [ 24.475830][ T1] pci 0000:00:03.0: BAR 0: assigned [io 0x1000-0x107f] [ 24.479678][ T1] pci 0000:00:01.0: BAR 0: assigned [io 0x1080-0x109f] [ 24.482741][ T1] pci 0000:00:02.0: BAR 0: assigned [io 0x10a0-0x10bf] [ 24.530082][ T1] usbcore: registered new interface driver udlfb [ 24.586529][ T1] uvesafb: failed to execute /sbin/v86d [ 24.589652][ T1] uvesafb: make sure that the v86d helper is installed and executable [ 24.590341][ T1] uvesafb: Getting VBE info block failed (eax=0x4f00, err=-2) [ 24.590969][ T1] uvesafb: vbe_init() failed with -22 [ 24.592718][ T1] uvesafb: probe of uvesafb.0 failed with error -22 [ 24.601729][ T1] IPMI message handler: version 39.2 [ 24.619551][ T1] ipmi device interface [ 24.623835][ T1] ipmi_si: IPMI System Interface driver [ 24.668622][ T1] ipmi_si: Unable to find any System Interface(s) [ 24.698613][ T1] EINJ: ACPI disabled. [ 24.922156][ T1] virtio-pci 0000:00:01.0: enabling device (0000 -> 0003) [ 24.954423][ T1] virtio-pci 0000:00:02.0: enabling device (0000 -> 0003) [ 24.981084][ T1] virtio-pci 0000:00:03.0: enabling device (0000 -> 0003) [ 30.390758][ T1] N_HDLC line discipline registered with maxframe=4096 [ 30.394228][ T1] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled [ 30.714694][ T1] Cyclades driver 2.6 [ 30.746455][ T1] Initializing Nozomi driver 2.1d [ 30.764774][ T1] RocketPort device driver module, version 2.09, 12-June-2003 [ 30.770595][ T1] No rocketport ports found; unloading driver [ 30.935946][ T1955] random: fast init done [ 30.974427][ T1955] random: crng init done [ 31.081977][ T1] [drm] Initialized vgem 1.0.0 20120112 for vgem on minor 0 [ 31.194130][ T1] [drm] Initialized vkms 1.0.0 20180514 for vkms on minor 1 [ 31.700559][ T1] Console: switching to colour frame buffer device 128x48 [ 31.755069][ T1] platform vkms: [drm] fb0: vkmsdrmfb frame buffer device [ 31.783122][ C0] ------------[ cut here ]------------ [ 31.783809][ C0] WARNING: CPU: 0 PID: 1 at drivers/gpu/drm/vkms/vkms_crtc.c:21 vkms_vblank_simulate+0x26c/0x2f4 [ 31.784326][ C0] Modules linked in: [ 31.784999][ C0] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.12.0-rc3-syzkaller-00020-g1df27313f50a #0 [ 31.785655][ C0] Hardware name: linux,dummy-virt (DT) [ 31.786253][ C0] pstate: 20000085 (nzCv daIf -PAN -UAO -TCO BTYPE=--) [ 31.786635][ C0] pc : vkms_vblank_simulate+0x26c/0x2f4 [ 31.786988][ C0] lr : vkms_vblank_simulate+0x90/0x2f4 [ 31.787311][ C0] sp : ffff00006ab32350 [ 31.787607][ C0] x29: ffff00006ab32350 x28: ffff0000099b1e58 [ 31.788119][ C0] x27: dfff800000000000 x26: ffff00006ab1d540 [ 31.788561][ C0] x25: 1fffe0000d563ab1 x24: 1fffe0000d563aaa [ 31.789000][ C0] x23: ffff0000099b0d30 x22: 0000000000fe4c00 [ 31.789442][ C0] x21: ffff00006ab1d540 x20: ffff0000099b0e58 [ 31.789915][ C0] x19: ffff0000099b1e58 x18: ffff00006ab3fb48 [ 31.790353][ C0] x17: 0000000000000000 x16: 0000000000000003 [ 31.790791][ C0] x15: ffff8000172b6810 x14: 1fffe0000d566420 [ 31.791233][ C0] x13: 0000000000000001 x12: 0000000000000033 [ 31.791689][ C0] x11: 1fffe0000112e11e x10: 0000000000000007 [ 31.792126][ C0] x9 : 1fffe0000112e126 x8 : ffff800015e18c00 [ 31.792627][ C0] x7 : 00000000f1f1f1f1 x6 : dfff800000000000 [ 31.793052][ C0] x5 : 7fffffffffffffff x4 : 000000071d31c970 [ 31.793501][ C0] x3 : 000000071e301570 x2 : 000000071d31c970 [ 31.793949][ C0] x1 : 000000071e301570 x0 : 0000000000000002 [ 31.794904][ C0] Call trace: [ 31.795224][ C0] vkms_vblank_simulate+0x26c/0x2f4 [ 31.795552][ C0] __hrtimer_run_queues+0x590/0xe40 [ 31.795868][ C0] hrtimer_interrupt+0x2e0/0x910 [ 31.796168][ C0] arch_timer_handler_phys+0x4c/0x70 [ 31.796479][ C0] handle_percpu_devid_irq+0x19c/0x330 [ 31.796767][ C0] __handle_domain_irq+0x11c/0x1f0 [ 31.797054][ C0] gic_handle_irq+0x5c/0x1b0 [ 31.797332][ C0] el1_irq+0xb4/0x180 [ 31.799653][ C0] queue_work_on+0x74/0x110 [ 31.801286][ C0] call_usermodehelper_exec+0x268/0x430 [ 31.803075][ C0] kobject_uevent_env+0xaf8/0x10d0 [ 31.804430][ C0] kobject_uevent+0x14/0x20 [ 31.805707][ C0] driver_register+0x208/0x410 [ 31.807473][ C0] usb_register_driver+0x1c4/0x3c0 [ 31.809802][ C0] udl_driver_init+0x24/0x30 [ 31.811604][ C0] do_one_initcall+0x138/0x9a0 [ 31.812286][ C0] kernel_init_freeable+0x6c4/0x72c [ 31.814081][ C0] kernel_init+0x14/0x124 [ 31.815264][ C0] ret_from_fork+0x10/0x3c [ 31.817567][ C0] Kernel panic - not syncing: panic_on_warn set ... [ 31.820369][ C0] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.12.0-rc3-syzkaller-00020-g1df27313f50a #0 [ 31.823162][ C0] Hardware name: linux,dummy-virt (DT) [ 31.824902][ C0] Call trace: [ 31.825923][ C0] dump_backtrace+0x0/0x3e0 [ 31.827352][ C0] show_stack+0x18/0x70 [ 31.829031][ C0] dump_stack+0x120/0x1a8 [ 31.830768][ C0] panic+0x31c/0x5c4 [ 31.831369][ C0] __warn+0x198/0x2f0 [ 31.832203][ C0] report_bug+0x154/0x210 [ 31.833434][ C0] bug_handler+0x38/0x90 [ 31.834607][ C0] brk_handler+0x114/0x230 [ 31.835924][ C0] do_debug_exception+0xc4/0x3b0 [ 31.837840][ C0] el1_dbg+0x60/0x80 [ 31.839359][ C0] el1_sync_handler+0x9c/0xd0 [ 31.840667][ C0] el1_sync+0x70/0x100 [ 31.841833][ C0] vkms_vblank_simulate+0x26c/0x2f4 [ 31.843281][ C0] __hrtimer_run_queues+0x590/0xe40 [ 31.844463][ C0] hrtimer_interrupt+0x2e0/0x910 [ 31.844785][ C0] arch_timer_handler_phys+0x4c/0x70 [ 31.845106][ C0] handle_percpu_devid_irq+0x19c/0x330 [ 31.845427][ C0] __handle_domain_irq+0x11c/0x1f0 [ 31.845765][ C0] gic_handle_irq+0x5c/0x1b0 [ 31.846067][ C0] el1_irq+0xb4/0x180 [ 31.846348][ C0] queue_work_on+0x74/0x110 [ 31.846647][ C0] call_usermodehelper_exec+0x268/0x430 [ 31.847087][ C0] kobject_uevent_env+0xaf8/0x10d0 [ 31.847405][ C0] kobject_uevent+0x14/0x20 [ 31.847710][ C0] driver_register+0x208/0x410 [ 31.848016][ C0] usb_register_driver+0x1c4/0x3c0 [ 31.848343][ C0] udl_driver_init+0x24/0x30 [ 31.848658][ C0] do_one_initcall+0x138/0x9a0 [ 31.848972][ C0] kernel_init_freeable+0x6c4/0x72c [ 31.849282][ C0] kernel_init+0x14/0x124 [ 31.849610][ C0] ret_from_fork+0x10/0x3c [ 31.851161][ C0] SMP: stopping secondary CPUs [ 31.853463][ C0] Dumping ftrace buffer: [ 31.854841][ C0] (ftrace buffer empty) [ 31.855672][ C0] Kernel Offset: disabled [ 31.855985][ C0] CPU features: 0x00240022,61002082 [ 31.856696][ C0] Memory Limit: none [ 31.858080][ C0] Rebooting in 1 seconds..