[ 0.000000][ T0] Booting Linux on physical CPU 0x0000000000 [0x411fd070] [ 0.000000][ T0] Linux version 5.12.0-rc2-syzkaller-00395-g344178334b09 (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 0xbfc23ec0-0xbfc26fff] [ 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: 1561452K/2097152K available (94144K kernel code, 27136K rwdata, 31816K rodata, 2176K init, 14234K bss, 502932K 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 [ 0.000166][ T0] sched_clock: 56 bits at 62MHz, resolution 16ns, wraps every 4398046511096ns [ 0.030656][ T0] Console: colour dummy device 80x25 [ 0.032706][ T0] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar [ 0.032990][ T0] ... MAX_LOCKDEP_SUBCLASSES: 8 [ 0.033167][ T0] ... MAX_LOCK_DEPTH: 48 [ 0.033336][ T0] ... MAX_LOCKDEP_KEYS: 8192 [ 0.033495][ T0] ... CLASSHASH_SIZE: 4096 [ 0.033646][ T0] ... MAX_LOCKDEP_ENTRIES: 32768 [ 0.033807][ T0] ... MAX_LOCKDEP_CHAINS: 65536 [ 0.033971][ T0] ... CHAINHASH_SIZE: 32768 [ 0.034140][ T0] memory used by lock dependency info: 6365 kB [ 0.034315][ T0] memory used for stack traces: 4224 kB [ 0.034487][ T0] per task-struct memory footprint: 1920 bytes [ 0.041712][ T0] Calibrating delay loop (skipped), value calculated using timer frequency.. 125.00 BogoMIPS (lpj=625000) [ 0.042567][ T0] pid_max: default: 32768 minimum: 301 [ 0.047443][ T0] LSM: Security Framework initializing [ 0.049798][ T0] Yama: becoming mindful. [ 0.054742][ T0] TOMOYO Linux initialized [ 0.056888][ T0] SELinux: Initializing. [ 0.061862][ T0] Mount-cache hash table entries: 4096 (order: 3, 32768 bytes, linear) [ 0.062663][ T0] Mountpoint-cache hash table entries: 4096 (order: 3, 32768 bytes, linear) [ 0.277531][ T1] Running RCU-tasks wait API self tests [ 0.437091][ T1] rcu: Hierarchical SRCU implementation. [ 0.440441][ T10] Callback from call_rcu_tasks_trace() invoked. [ 0.535741][ T1] EFI services will not be available. [ 0.554353][ T1] smp: Bringing up secondary CPUs ... [ 0.597398][ T0] Detected PIPT I-cache on CPU1 [ 0.601300][ T0] CPU1: Booted secondary processor 0x0000000001 [0x411fd070] [ 0.633075][ T1] smp: Brought up 1 node, 2 CPUs [ 0.633705][ T1] SMP: Total of 2 processors activated. [ 0.634038][ T1] CPU features: detected: 32-bit EL0 Support [ 0.634363][ T1] CPU features: detected: CRC32 instructions [ 0.634687][ T1] CPU features: detected: 32-bit EL1 Support [ 0.673086][ T9] Callback from call_rcu_tasks() invoked. [ 1.639159][ T1] CPU: All CPU(s) started at EL2 [ 1.691345][ T14] alternatives: patching kernel code [ 1.806866][ T1] devtmpfs: initialized [ 2.443606][ T1] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns [ 2.445130][ T1] futex hash table entries: 512 (order: 4, 65536 bytes, linear) [ 2.938281][ T1] DMI not present or invalid. [ 2.993831][ T1] NET: Registered protocol family 16 [ 3.163348][ T1] DMA: preallocated 256 KiB GFP_KERNEL pool for atomic allocations [ 3.171388][ T1] DMA: preallocated 256 KiB GFP_KERNEL|GFP_DMA pool for atomic allocations [ 3.184179][ T1] DMA: preallocated 256 KiB GFP_KERNEL|GFP_DMA32 pool for atomic allocations [ 3.189803][ T1] audit: initializing netlink subsys (disabled) [ 3.249735][ T34] audit: type=2000 audit(2.860:1): state=initialized audit_enabled=0 res=1 [ 3.633043][ T1] thermal_sys: Registered thermal governor 'step_wise' [ 3.633326][ T1] thermal_sys: Registered thermal governor 'power_allocator' [ 3.637207][ T1] cpuidle: using governor menu [ 3.641417][ T1] NET: Registered protocol family 42 [ 3.673193][ T1] hw-breakpoint: found 6 breakpoint and 4 watchpoint registers. [ 3.687608][ T1] ASID allocator initialised with 65536 entries [ 3.713220][ T1] Serial: AMBA PL011 UART driver [ 4.744893][ T1] 9000000.pl011: ttyAMA0 at MMIO 0x9000000 (irq = 48, base_baud = 0) is a PL011 rev1 [ 4.857252][ T1] printk: console [ttyAMA0] enabled [ 18.317972][ T1] HugeTLB registered 1.00 GiB page size, pre-allocated 0 pages [ 18.322930][ T1] HugeTLB registered 32.0 MiB page size, pre-allocated 0 pages [ 18.325245][ T1] HugeTLB registered 2.00 MiB page size, pre-allocated 0 pages [ 18.326989][ T1] HugeTLB registered 64.0 KiB page size, pre-allocated 0 pages [ 18.748273][ T1] cryptd: max_cpu_qlen set to 1000 [ 19.848630][ T1] raid6: neonx8 gen() 783 MB/s [ 20.030095][ T1] raid6: neonx8 xor() 312 MB/s [ 20.212530][ T1] raid6: neonx4 gen() 673 MB/s [ 20.413848][ T1] raid6: neonx4 xor() 379 MB/s [ 20.590935][ T1] raid6: neonx2 gen() 807 MB/s [ 20.768299][ T1] raid6: neonx2 xor() 371 MB/s [ 20.945607][ T1] raid6: neonx1 gen() 632 MB/s [ 21.126970][ T1] raid6: neonx1 xor() 312 MB/s [ 21.314003][ T1] raid6: int64x8 gen() 335 MB/s [ 21.498945][ T1] raid6: int64x8 xor() 241 MB/s [ 21.677983][ T1] raid6: int64x4 gen() 534 MB/s [ 21.860196][ T1] raid6: int64x4 xor() 321 MB/s [ 22.042061][ T1] raid6: int64x2 gen() 527 MB/s [ 22.224329][ T1] raid6: int64x2 xor() 341 MB/s [ 22.406172][ T1] raid6: int64x1 gen() 394 MB/s [ 22.587784][ T1] raid6: int64x1 xor() 266 MB/s [ 22.588586][ T1] raid6: using algorithm neonx2 gen() 807 MB/s [ 22.589042][ T1] raid6: .... xor() 371 MB/s, rmw enabled [ 22.589895][ T1] raid6: using neon recovery algorithm [ 22.628254][ T1] ACPI: Interpreter disabled. [ 22.688250][ T1] iommu: Default domain type: Translated [ 22.705162][ T1] vgaarb: loaded [ 22.770895][ T1] SCSI subsystem initialized [ 22.898798][ T1] usbcore: registered new interface driver usbfs [ 22.907479][ T1] usbcore: registered new interface driver hub [ 22.916540][ T1] usbcore: registered new device driver usb [ 22.978656][ T1] pps_core: LinuxPPS API ver. 1 registered [ 22.979219][ T1] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti [ 23.001875][ T1] PTP clock support registered [ 23.023097][ T1] EDAC MC: Ver: 3.0.0 [ 23.174460][ T1] Advanced Linux Sound Architecture Driver Initialized. [ 23.284452][ T1] Bluetooth: Core ver 2.22 [ 23.292675][ T1] NET: Registered protocol family 31 [ 23.294691][ T1] Bluetooth: HCI device and connection manager initialized [ 23.296300][ T1] Bluetooth: HCI socket layer initialized [ 23.297155][ T1] Bluetooth: L2CAP socket layer initialized [ 23.302028][ T1] Bluetooth: SCO socket layer initialized [ 23.304484][ T1] NET: Registered protocol family 8 [ 23.305015][ T1] NET: Registered protocol family 20 [ 23.312698][ T1] NetLabel: Initializing [ 23.314569][ T1] NetLabel: domain hash size = 128 [ 23.315063][ T1] NetLabel: protocols = UNLABELED CIPSOv4 CALIPSO [ 23.326485][ T1] NetLabel: unlabeled traffic allowed by default [ 23.348916][ T1] nfc: nfc_init: NFC Core ver 0.1 [ 23.365508][ T1] NET: Registered protocol family 39 [ 23.389649][ T1] clocksource: Switched to clocksource arch_sys_counter [ 31.615549][ T1] VFS: Disk quotas dquot_6.6.0 [ 31.619632][ T1] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes) [ 31.634320][ T1] FS-Cache: Loaded [ 31.661375][ T1] CacheFiles: Loaded [ 31.677296][ T1] TOMOYO: 2.6.0 [ 31.678863][ T1] Mandatory Access Control activated. [ 31.702345][ T1] pnp: PnP ACPI: disabled [ 33.484532][ T1] NET: Registered protocol family 2 [ 33.537705][ T1] tcp_listen_portaddr_hash hash table entries: 1024 (order: 4, 81920 bytes, linear) [ 33.543856][ T1] TCP established hash table entries: 16384 (order: 5, 131072 bytes, linear) [ 33.564938][ T1] TCP bind hash table entries: 16384 (order: 8, 1179648 bytes, linear) [ 33.578928][ T1] TCP: Hash tables configured (established 16384 bind 16384) [ 33.599028][ T1] MPTCP token hash table entries: 2048 (order: 5, 180224 bytes, linear) [ 33.607745][ T1] UDP hash table entries: 1024 (order: 5, 163840 bytes, linear) [ 33.613205][ T1] UDP-Lite hash table entries: 1024 (order: 5, 163840 bytes, linear) [ 33.640892][ T1] NET: Registered protocol family 1 [ 33.702143][ T1] RPC: Registered named UNIX socket transport module. [ 33.702895][ T1] RPC: Registered udp transport module. [ 33.703294][ T1] RPC: Registered tcp transport module. [ 33.703692][ T1] RPC: Registered tcp NFSv4.1 backchannel transport module. [ 33.805065][ T1] NET: Registered protocol family 44 [ 33.821780][ T1] PCI: CLS 0 bytes, default 64 [ 33.980374][ T1] hw perfevents: enabled with armv8_pmuv3 PMU driver, 5 counters available [ 33.999486][ T1] kvm [1]: Guests without required CPU erratum workarounds can deadlock system! [ 33.999486][ T1] Only trusted guests should be used on this system. [ 34.003222][ T1] kvm [1]: IPA Size Limit: 44 bits [ 34.278607][ T1] kvm [1]: vgic interrupt IRQ9 [ 34.300749][ T1] kvm [1]: Hyp mode initialized successfully [ 35.172578][ T1] Initialise system trusted keyrings [ 35.198660][ T1] workingset: timestamp_bits=42 max_order=19 bucket_order=0 [ 35.988275][ T1] zbud: loaded [ 36.150852][ T1] DLM installed [ 36.282669][ T1] squashfs: version 4.0 (2009/01/31) Phillip Lougher [ 36.444331][ T1] NFS: Registering the id_resolver key type [ 36.448176][ T1] Key type id_resolver registered [ 36.450492][ T1] Key type id_legacy registered [ 36.460221][ T1] nfs4filelayout_init: NFSv4 File Layout Driver Registering... [ 36.504761][ T1] fuse: init (API version 7.33) [ 36.597747][ T1] 9p: Installing v9fs 9p2000 file system support [ 36.783210][ T1] NET: Registered protocol family 38 [ 36.795121][ T1] xor: measuring software checksum speed [ 36.817673][ T1] 8regs : 663 MB/sec [ 36.839231][ T1] 32regs : 577 MB/sec [ 36.855184][ T1] arm64_neon : 1111 MB/sec [ 36.855821][ T1] xor: using function: arm64_neon (1111 MB/sec) [ 36.858103][ T1] async_tx: api initialized (async) [ 36.858741][ T1] Key type asymmetric registered [ 36.859439][ T1] Asymmetric key parser 'x509' registered [ 36.861490][ T1] Asymmetric key parser 'pkcs8' registered [ 36.861982][ T1] Key type pkcs7_test registered [ 36.862441][ T1] Asymmetric key parser 'tpm_parser' registered [ 36.869825][ T1] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 244) [ 36.883975][ T1] io scheduler mq-deadline registered [ 36.884939][ T1] io scheduler kyber registered [ 36.910139][ T1] io scheduler bfq registered [ 37.089345][ T1] pl061_gpio 9030000.pl061: PL061 GPIO chip registered [ 37.225076][ T1] pci-host-generic 4010000000.pcie: host bridge /pcie@10000000 ranges: [ 37.239364][ T1] pci-host-generic 4010000000.pcie: IO 0x003eff0000..0x003effffff -> 0x0000000000 [ 37.245474][ T1] pci-host-generic 4010000000.pcie: MEM 0x0010000000..0x003efeffff -> 0x0010000000 [ 37.253506][ T1] pci-host-generic 4010000000.pcie: MEM 0x8000000000..0xffffffffff -> 0x8000000000 [ 37.261949][ T1] pci-host-generic 4010000000.pcie: Memory resource size exceeds max for 32 bits [ 37.289090][ T1] pci-host-generic 4010000000.pcie: ECAM at [mem 0x4010000000-0x401fffffff] for [bus 00-ff] [ 37.311438][ T1] pci-host-generic 4010000000.pcie: PCI host bridge to bus 0000:00 [ 37.313049][ T1] pci_bus 0000:00: root bus resource [bus 00-ff] [ 37.313923][ T1] pci_bus 0000:00: root bus resource [io 0x0000-0xffff] [ 37.314654][ T1] pci_bus 0000:00: root bus resource [mem 0x10000000-0x3efeffff] [ 37.316076][ T1] pci_bus 0000:00: root bus resource [mem 0x8000000000-0xffffffffff] [ 37.325262][ T1] pci 0000:00:00.0: [1b36:0008] type 00 class 0x060000 [ 37.351586][ T1] pci 0000:00:01.0: [1af4:1005] type 00 class 0x00ff00 [ 37.355260][ T1] pci 0000:00:01.0: reg 0x10: [io 0x0000-0x001f] [ 37.359653][ T1] pci 0000:00:01.0: reg 0x20: [mem 0x00000000-0x00003fff 64bit pref] [ 37.377381][ T1] pci 0000:00:02.0: [1af4:1000] type 00 class 0x020000 [ 37.378629][ T1] pci 0000:00:02.0: reg 0x10: [io 0x0000-0x001f] [ 37.379371][ T1] pci 0000:00:02.0: reg 0x14: [mem 0x00000000-0x00000fff] [ 37.380649][ T1] pci 0000:00:02.0: reg 0x20: [mem 0x00000000-0x00003fff 64bit pref] [ 37.381454][ T1] pci 0000:00:02.0: reg 0x30: [mem 0x00000000-0x0003ffff pref] [ 37.395855][ T1] pci 0000:00:03.0: [1af4:1001] type 00 class 0x010000 [ 37.398738][ T1] pci 0000:00:03.0: reg 0x10: [io 0x0000-0x007f] [ 37.400120][ T1] pci 0000:00:03.0: reg 0x14: [mem 0x00000000-0x00000fff] [ 37.401356][ T1] pci 0000:00:03.0: reg 0x20: [mem 0x00000000-0x00003fff 64bit pref] [ 37.424823][ T1] pci 0000:00:02.0: BAR 6: assigned [mem 0x10000000-0x1003ffff pref] [ 37.427308][ T1] pci 0000:00:01.0: BAR 4: assigned [mem 0x8000000000-0x8000003fff 64bit pref] [ 37.428641][ T1] pci 0000:00:02.0: BAR 4: assigned [mem 0x8000004000-0x8000007fff 64bit pref] [ 37.429682][ T1] pci 0000:00:03.0: BAR 4: assigned [mem 0x8000008000-0x800000bfff 64bit pref] [ 37.430589][ T1] pci 0000:00:02.0: BAR 1: assigned [mem 0x10040000-0x10040fff] [ 37.431265][ T1] pci 0000:00:03.0: BAR 1: assigned [mem 0x10041000-0x10041fff] [ 37.431933][ T1] pci 0000:00:03.0: BAR 0: assigned [io 0x1000-0x107f] [ 37.432531][ T1] pci 0000:00:01.0: BAR 0: assigned [io 0x1080-0x109f] [ 37.433112][ T1] pci 0000:00:02.0: BAR 0: assigned [io 0x10a0-0x10bf] [ 37.459831][ T1] usbcore: registered new interface driver udlfb [ 37.543591][ T1] uvesafb: failed to execute /sbin/v86d [ 37.544271][ T1] uvesafb: make sure that the v86d helper is installed and executable [ 37.545115][ T1] uvesafb: Getting VBE info block failed (eax=0x4f00, err=-2) [ 37.545883][ T1] uvesafb: vbe_init() failed with -22 [ 37.549467][ T1] uvesafb: probe of uvesafb.0 failed with error -22 [ 37.554472][ T1] IPMI message handler: version 39.2 [ 37.563192][ T1] ipmi device interface [ 37.573008][ T1] ipmi_si: IPMI System Interface driver [ 37.694459][ T1] ipmi_si: Unable to find any System Interface(s) [ 37.757574][ T1] EINJ: ACPI disabled. [ 38.044305][ T1] virtio-pci 0000:00:01.0: enabling device (0000 -> 0003) [ 38.074555][ T1] virtio-pci 0000:00:02.0: enabling device (0000 -> 0003) [ 38.103728][ T1] virtio-pci 0000:00:03.0: enabling device (0000 -> 0003) [ 46.083950][ T1] N_HDLC line discipline registered with maxframe=4096 [ 46.088990][ T1] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled [ 46.410013][ T1] Cyclades driver 2.6 [ 46.429506][ T1] Initializing Nozomi driver 2.1d [ 46.463635][ T1] RocketPort device driver module, version 2.09, 12-June-2003 [ 46.473236][ T1] No rocketport ports found; unloading driver [ 46.642423][ T2293] random: fast init done [ 46.664912][ T2293] random: crng init done [ 46.832271][ T1] [drm] Initialized vgem 1.0.0 20120112 for vgem on minor 0 [ 46.962035][ T1] [drm] Initialized vkms 1.0.0 20180514 for vkms on minor 1 [ 47.584822][ T1] Console: switching to colour frame buffer device 128x48 [ 47.661451][ C1] ------------[ cut here ]------------ [ 47.661848][ C1] WARNING: CPU: 1 PID: 1 at drivers/gpu/drm/vkms/vkms_crtc.c:21 vkms_vblank_simulate+0x26c/0x2f4 [ 47.662085][ C1] Modules linked in: [ 47.662564][ C1] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 5.12.0-rc2-syzkaller-00395-g344178334b09 #0 [ 47.662884][ C1] Hardware name: linux,dummy-virt (DT) [ 47.663255][ C1] pstate: 20000085 (nzCv daIf -PAN -UAO -TCO BTYPE=--) [ 47.663394][ C1] pc : vkms_vblank_simulate+0x26c/0x2f4 [ 47.663522][ C1] lr : vkms_vblank_simulate+0x90/0x2f4 [ 47.663607][ C1] sp : ffff00006a6bccd0 [ 47.663711][ C1] x29: ffff00006a6bccd0 x28: ffff00000c7cde58 [ 47.663939][ C1] x27: dfff800000000000 x26: ffff00006a6a8540 [ 47.664077][ C1] x25: 1fffe0000d4d50b1 x24: 1fffe0000d4d50aa [ 47.664215][ C1] x23: ffff00000c7ccd30 x22: 0000000000fe4c00 [ 47.664364][ C1] x21: ffff00006a6a8540 x20: ffff00000c7cce58 [ 47.664500][ C1] x19: ffff00000c7cde58 x18: ffff00006a678b48 [ 47.664625][ C1] x17: 0000000000000000 x16: 0000000000000003 [ 47.664757][ C1] x15: ffff8000197bf810 x14: 1fffe0000d4d7950 [ 47.664889][ C1] x13: 0000000000000001 x12: 0000000000000033 [ 47.665020][ C1] x11: 1fffe000015b711e x10: 0000000000000007 [ 47.665152][ C1] x9 : 1fffe000015b713a x8 : ffff800017d14c00 [ 47.665355][ C1] x7 : 00000000f1f1f1f1 x6 : dfff800000000000 [ 47.665500][ C1] x5 : 7fffffffffffffff x4 : 0000000a847849b0 [ 47.665638][ C1] x3 : 0000000a857695b0 x2 : 0000000a847849b0 [ 47.665775][ C1] x1 : 0000000a857695b0 x0 : 0000000000000002 [ 47.666193][ C1] Call trace: [ 47.666312][ C1] vkms_vblank_simulate+0x26c/0x2f4 [ 47.666415][ C1] __hrtimer_run_queues+0x590/0xe40 [ 47.666491][ C1] hrtimer_interrupt+0x2d4/0x810 [ 47.666551][ C1] arch_timer_handler_phys+0x4c/0x70 [ 47.666623][ C1] handle_percpu_devid_irq+0x19c/0x330 [ 47.666689][ C1] __handle_domain_irq+0x11c/0x1f0 [ 47.666750][ C1] gic_handle_irq+0x5c/0x1b0 [ 47.666825][ C1] el1_irq+0xb4/0x180 [ 47.666889][ C1] queue_work_on+0x74/0x110 [ 47.666956][ C1] cursor_timer_handler+0x64/0x100 [ 47.667022][ C1] call_timer_fn+0x1d4/0x9c4 [ 47.667083][ C1] __run_timers.part.0+0x530/0xa00 [ 47.667143][ C1] run_timer_softirq+0xa4/0x1a0 [ 47.667206][ C1] _stext+0x2b4/0x1084 [ 47.667295][ C1] __irq_exit_rcu+0x46c/0x510 [ 47.667382][ C1] irq_exit+0x14/0x84 [ 47.667449][ C1] __handle_domain_irq+0x120/0x1f0 [ 47.667511][ C1] gic_handle_irq+0x5c/0x1b0 [ 47.667575][ C1] el1_irq+0xb4/0x180 [ 47.667634][ C1] sys_imageblit+0x9a8/0x1620 [ 47.667733][ C1] drm_fbdev_fb_imageblit+0x124/0x2ac [ 47.667801][ C1] bit_putcs+0x534/0x9d4 [ 47.667865][ C1] fbcon_putcs+0x298/0x3dc [ 47.667929][ C1] do_update_region+0x2fc/0x4f0 [ 47.667998][ C1] update_region+0x98/0x120 [ 47.668063][ C1] fbcon_switch+0x10c4/0x157c [ 47.668126][ C1] redraw_screen+0x21c/0x5c0 [ 47.668192][ C1] do_bind_con_driver.isra.0+0x6c4/0xa20 [ 47.668254][ C1] do_take_over_console+0x3c4/0x670 [ 47.668331][ C1] do_fbcon_takeover+0xdc/0x1fc [ 47.668398][ C1] fbcon_fb_registered+0x1d4/0x290 [ 47.668464][ C1] register_framebuffer+0x458/0x7e0 [ 47.668525][ C1] __drm_fb_helper_initial_config_and_unlock+0x924/0x1090 [ 47.668593][ C1] drm_fbdev_client_hotplug+0x200/0x4c0 [ 47.668658][ C1] drm_fbdev_generic_setup+0x150/0x41c [ 47.668723][ C1] vkms_init+0x458/0x4d8 [ 47.668803][ C1] do_one_initcall+0x138/0x9a0 [ 47.668866][ C1] kernel_init_freeable+0x6c4/0x72c [ 47.668939][ C1] kernel_init+0x14/0x124 [ 47.669015][ C1] ret_from_fork+0x10/0x3c [ 47.669596][ C1] Kernel panic - not syncing: panic_on_warn set ... [ 47.669905][ C1] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 5.12.0-rc2-syzkaller-00395-g344178334b09 #0 [ 47.669983][ C1] Hardware name: linux,dummy-virt (DT) [ 47.670057][ C1] Call trace: [ 47.670102][ C1] dump_backtrace+0x0/0x3e0 [ 47.670175][ C1] show_stack+0x18/0x70 [ 47.670242][ C1] dump_stack+0x120/0x1a8 [ 47.670305][ C1] panic+0x31c/0x5c4 [ 47.670383][ C1] __warn+0x198/0x2f0 [ 47.670447][ C1] report_bug+0x154/0x210 [ 47.670515][ C1] bug_handler+0x38/0x90 [ 47.670575][ C1] brk_handler+0x114/0x230 [ 47.670636][ C1] do_debug_exception+0xc4/0x3b0 [ 47.670707][ C1] el1_dbg+0x60/0x80 [ 47.670778][ C1] el1_sync_handler+0x9c/0xd0 [ 47.670845][ C1] el1_sync+0x70/0x100 [ 47.670905][ C1] vkms_vblank_simulate+0x26c/0x2f4 [ 47.670972][ C1] __hrtimer_run_queues+0x590/0xe40 [ 47.671037][ C1] hrtimer_interrupt+0x2d4/0x810 [ 47.671101][ C1] arch_timer_handler_phys+0x4c/0x70 [ 47.671167][ C1] handle_percpu_devid_irq+0x19c/0x330 [ 47.671233][ C1] __handle_domain_irq+0x11c/0x1f0 [ 47.671295][ C1] gic_handle_irq+0x5c/0x1b0 [ 47.671371][ C1] el1_irq+0xb4/0x180 [ 47.671431][ C1] queue_work_on+0x74/0x110 [ 47.671498][ C1] cursor_timer_handler+0x64/0x100 [ 47.671563][ C1] call_timer_fn+0x1d4/0x9c4 [ 47.671624][ C1] __run_timers.part.0+0x530/0xa00 [ 47.671718][ C1] run_timer_softirq+0xa4/0x1a0 [ 47.671782][ C1] _stext+0x2b4/0x1084 [ 47.671841][ C1] __irq_exit_rcu+0x46c/0x510 [ 47.671909][ C1] irq_exit+0x14/0x84 [ 47.671975][ C1] __handle_domain_irq+0x120/0x1f0 [ 47.672037][ C1] gic_handle_irq+0x5c/0x1b0 [ 47.672102][ C1] el1_irq+0xb4/0x180 [ 47.672162][ C1] sys_imageblit+0x9a8/0x1620 [ 47.672229][ C1] drm_fbdev_fb_imageblit+0x124/0x2ac [ 47.672294][ C1] bit_putcs+0x534/0x9d4 [ 47.672367][ C1] fbcon_putcs+0x298/0x3dc [ 47.672429][ C1] do_update_region+0x2fc/0x4f0 [ 47.672491][ C1] update_region+0x98/0x120 [ 47.672556][ C1] fbcon_switch+0x10c4/0x157c [ 47.672620][ C1] redraw_screen+0x21c/0x5c0 [ 47.672685][ C1] do_bind_con_driver.isra.0+0x6c4/0xa20 [ 47.672752][ C1] do_take_over_console+0x3c4/0x670 [ 47.672816][ C1] do_fbcon_takeover+0xdc/0x1fc [ 47.672880][ C1] fbcon_fb_registered+0x1d4/0x290 [ 47.672941][ C1] register_framebuffer+0x458/0x7e0 [ 47.672995][ C1] __drm_fb_helper_initial_config_and_unlock+0x924/0x1090 [ 47.673056][ C1] drm_fbdev_client_hotplug+0x200/0x4c0 [ 47.673113][ C1] drm_fbdev_generic_setup+0x150/0x41c [ 47.673176][ C1] vkms_init+0x458/0x4d8 [ 47.673244][ C1] do_one_initcall+0x138/0x9a0 [ 47.673304][ C1] kernel_init_freeable+0x6c4/0x72c [ 47.673380][ C1] kernel_init+0x14/0x124 [ 47.673441][ C1] ret_from_fork+0x10/0x3c [ 47.674538][ C1] SMP: stopping secondary CPUs [ 47.693102][ C1] Dumping ftrace buffer: [ 47.694405][ C1] (ftrace buffer empty) [ 47.695023][ C1] Kernel Offset: disabled [ 47.695090][ C1] CPU features: 0x00240022,61002082 [ 47.695559][ C1] Memory Limit: none [ 47.718565][ C1] Rebooting in 1 seconds..