[ 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 [ 0.000177][ T0] sched_clock: 56 bits at 62MHz, resolution 16ns, wraps every 4398046511096ns [ 0.030575][ T0] Console: colour dummy device 80x25 [ 0.032678][ T0] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar [ 0.032951][ T0] ... MAX_LOCKDEP_SUBCLASSES: 8 [ 0.033156][ T0] ... MAX_LOCK_DEPTH: 48 [ 0.033310][ T0] ... MAX_LOCKDEP_KEYS: 8192 [ 0.033463][ T0] ... CLASSHASH_SIZE: 4096 [ 0.033627][ T0] ... MAX_LOCKDEP_ENTRIES: 32768 [ 0.033794][ T0] ... MAX_LOCKDEP_CHAINS: 65536 [ 0.033973][ T0] ... CHAINHASH_SIZE: 32768 [ 0.034142][ T0] memory used by lock dependency info: 6365 kB [ 0.034309][ T0] memory used for stack traces: 4224 kB [ 0.034473][ T0] per task-struct memory footprint: 1920 bytes [ 0.041824][ T0] Calibrating delay loop (skipped), value calculated using timer frequency.. 125.00 BogoMIPS (lpj=625000) [ 0.042599][ T0] pid_max: default: 32768 minimum: 301 [ 0.047380][ T0] LSM: Security Framework initializing [ 0.049802][ T0] Yama: becoming mindful. [ 0.054827][ T0] TOMOYO Linux initialized [ 0.057096][ T0] SELinux: Initializing. [ 0.061705][ T0] Mount-cache hash table entries: 4096 (order: 3, 32768 bytes, linear) [ 0.062118][ T0] Mountpoint-cache hash table entries: 4096 (order: 3, 32768 bytes, linear) [ 0.271406][ T1] Running RCU-tasks wait API self tests [ 0.432540][ T1] rcu: Hierarchical SRCU implementation. [ 0.440520][ T10] Callback from call_rcu_tasks_trace() invoked. [ 0.540431][ T1] EFI services will not be available. [ 0.557054][ T1] smp: Bringing up secondary CPUs ... [ 0.594627][ T0] Detected PIPT I-cache on CPU1 [ 0.598354][ T0] CPU1: Booted secondary processor 0x0000000001 [0x411fd070] [ 0.628140][ T1] smp: Brought up 1 node, 2 CPUs [ 0.628799][ T1] SMP: Total of 2 processors activated. [ 0.629160][ T1] CPU features: detected: 32-bit EL0 Support [ 0.631204][ T1] CPU features: detected: CRC32 instructions [ 0.631520][ T1] CPU features: detected: 32-bit EL1 Support [ 0.667378][ T9] Callback from call_rcu_tasks() invoked. [ 1.695238][ T1] CPU: All CPU(s) started at EL2 [ 1.697104][ T14] alternatives: patching kernel code [ 1.774718][ T1] devtmpfs: initialized [ 2.356247][ T1] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns [ 2.357542][ T1] futex hash table entries: 512 (order: 4, 65536 bytes, linear) [ 2.705157][ T1] DMI not present or invalid. [ 2.778675][ T1] NET: Registered protocol family 16 [ 2.927418][ T1] DMA: preallocated 256 KiB GFP_KERNEL pool for atomic allocations [ 2.934530][ T1] DMA: preallocated 256 KiB GFP_KERNEL|GFP_DMA pool for atomic allocations [ 2.946588][ T1] DMA: preallocated 256 KiB GFP_KERNEL|GFP_DMA32 pool for atomic allocations [ 2.952346][ T1] audit: initializing netlink subsys (disabled) [ 2.968109][ T35] audit: type=2000 audit(2.720:1): state=initialized audit_enabled=0 res=1 [ 3.244368][ T1] thermal_sys: Registered thermal governor 'step_wise' [ 3.244734][ T1] thermal_sys: Registered thermal governor 'power_allocator' [ 3.261293][ T1] cpuidle: using governor menu [ 3.264110][ T1] NET: Registered protocol family 42 [ 3.287699][ T1] hw-breakpoint: found 6 breakpoint and 4 watchpoint registers. [ 3.291972][ T1] ASID allocator initialised with 65536 entries [ 3.311281][ T1] Serial: AMBA PL011 UART driver [ 4.094845][ T1] 9000000.pl011: ttyAMA0 at MMIO 0x9000000 (irq = 48, base_baud = 0) is a PL011 rev1 [ 4.200621][ T1] printk: console [ttyAMA0] enabled [ 16.521303][ T1] HugeTLB registered 1.00 GiB page size, pre-allocated 0 pages [ 16.526262][ T1] HugeTLB registered 32.0 MiB page size, pre-allocated 0 pages [ 16.528072][ T1] HugeTLB registered 2.00 MiB page size, pre-allocated 0 pages [ 16.528648][ T1] HugeTLB registered 64.0 KiB page size, pre-allocated 0 pages [ 17.222801][ T1] cryptd: max_cpu_qlen set to 1000 [ 18.136559][ T1] raid6: neonx8 gen() 835 MB/s [ 18.382277][ T1] raid6: neonx8 xor() 356 MB/s [ 18.557031][ T1] raid6: neonx4 gen() 740 MB/s [ 18.732950][ T1] raid6: neonx4 xor() 350 MB/s [ 18.914951][ T1] raid6: neonx2 gen() 850 MB/s [ 19.093807][ T1] raid6: neonx2 xor() 380 MB/s [ 19.272248][ T1] raid6: neonx1 gen() 652 MB/s [ 19.450843][ T1] raid6: neonx1 xor() 326 MB/s [ 19.628750][ T1] raid6: int64x8 gen() 312 MB/s [ 19.808427][ T1] raid6: int64x8 xor() 225 MB/s [ 19.991193][ T1] raid6: int64x4 gen() 538 MB/s [ 20.176756][ T1] raid6: int64x4 xor() 341 MB/s [ 20.358568][ T1] raid6: int64x2 gen() 605 MB/s [ 20.541671][ T1] raid6: int64x2 xor() 330 MB/s [ 20.720239][ T1] raid6: int64x1 gen() 405 MB/s [ 20.898848][ T1] raid6: int64x1 xor() 255 MB/s [ 20.901393][ T1] raid6: using algorithm neonx2 gen() 850 MB/s [ 20.901885][ T1] raid6: .... xor() 380 MB/s, rmw enabled [ 20.902658][ T1] raid6: using neon recovery algorithm [ 20.960201][ T1] ACPI: Interpreter disabled. [ 21.038175][ T1] iommu: Default domain type: Translated [ 21.070459][ T1] vgaarb: loaded [ 21.167389][ T1] SCSI subsystem initialized [ 21.306590][ T1] usbcore: registered new interface driver usbfs [ 21.319076][ T1] usbcore: registered new interface driver hub [ 21.329030][ T1] usbcore: registered new device driver usb [ 21.456218][ T1] pps_core: LinuxPPS API ver. 1 registered [ 21.456930][ T1] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti [ 21.470757][ T1] PTP clock support registered [ 21.496811][ T1] EDAC MC: Ver: 3.0.0 [ 21.677928][ T1] Advanced Linux Sound Architecture Driver Initialized. [ 21.845163][ T1] Bluetooth: Core ver 2.22 [ 21.850092][ T1] NET: Registered protocol family 31 [ 21.850671][ T1] Bluetooth: HCI device and connection manager initialized [ 21.853168][ T1] Bluetooth: HCI socket layer initialized [ 21.854165][ T1] Bluetooth: L2CAP socket layer initialized [ 21.856567][ T1] Bluetooth: SCO socket layer initialized [ 21.859022][ T1] NET: Registered protocol family 8 [ 21.859655][ T1] NET: Registered protocol family 20 [ 21.867435][ T1] NetLabel: Initializing [ 21.868236][ T1] NetLabel: domain hash size = 128 [ 21.869179][ T1] NetLabel: protocols = UNLABELED CIPSOv4 CALIPSO [ 21.879924][ T1] NetLabel: unlabeled traffic allowed by default [ 21.915034][ T1] nfc: nfc_init: NFC Core ver 0.1 [ 21.931912][ T1] NET: Registered protocol family 39 [ 21.969685][ T1] clocksource: Switched to clocksource arch_sys_counter [ 31.969080][ T1] VFS: Disk quotas dquot_6.6.0 [ 31.972275][ T1] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes) [ 32.004697][ T1] FS-Cache: Loaded [ 32.054736][ T1] CacheFiles: Loaded [ 32.084616][ T1] TOMOYO: 2.6.0 [ 32.085568][ T1] Mandatory Access Control activated. [ 32.162864][ T1] pnp: PnP ACPI: disabled [ 33.982176][ T1] NET: Registered protocol family 2 [ 34.041795][ T1] tcp_listen_portaddr_hash hash table entries: 1024 (order: 4, 81920 bytes, linear) [ 34.045794][ T1] TCP established hash table entries: 16384 (order: 5, 131072 bytes, linear) [ 34.075547][ T1] TCP bind hash table entries: 16384 (order: 8, 1179648 bytes, linear) [ 34.090242][ T1] TCP: Hash tables configured (established 16384 bind 16384) [ 34.107385][ T1] MPTCP token hash table entries: 2048 (order: 5, 180224 bytes, linear) [ 34.116301][ T1] UDP hash table entries: 1024 (order: 5, 163840 bytes, linear) [ 34.124576][ T1] UDP-Lite hash table entries: 1024 (order: 5, 163840 bytes, linear) [ 34.142539][ T1] NET: Registered protocol family 1 [ 34.177949][ T1] RPC: Registered named UNIX socket transport module. [ 34.180396][ T1] RPC: Registered udp transport module. [ 34.181772][ T1] RPC: Registered tcp transport module. [ 34.182198][ T1] RPC: Registered tcp NFSv4.1 backchannel transport module. [ 34.219414][ T1] NET: Registered protocol family 44 [ 34.222071][ T1] PCI: CLS 0 bytes, default 64 [ 34.400059][ T1] hw perfevents: enabled with armv8_pmuv3 PMU driver, 5 counters available [ 34.413991][ T1] kvm [1]: Guests without required CPU erratum workarounds can deadlock system! [ 34.413991][ T1] Only trusted guests should be used on this system. [ 34.415332][ T1] kvm [1]: IPA Size Limit: 44 bits [ 34.677682][ T1] kvm [1]: vgic interrupt IRQ9 [ 34.683276][ T1] kvm [1]: Hyp mode initialized successfully [ 35.374532][ T1] Initialise system trusted keyrings [ 35.404675][ T1] workingset: timestamp_bits=42 max_order=19 bucket_order=0 [ 36.105073][ T1] zbud: loaded [ 36.234124][ T1] DLM installed [ 36.412802][ T1] squashfs: version 4.0 (2009/01/31) Phillip Lougher [ 36.604452][ T1] NFS: Registering the id_resolver key type [ 36.606129][ T1] Key type id_resolver registered [ 36.609030][ T1] Key type id_legacy registered [ 36.617880][ T1] nfs4filelayout_init: NFSv4 File Layout Driver Registering... [ 36.643559][ T1] fuse: init (API version 7.33) [ 36.711626][ T1] 9p: Installing v9fs 9p2000 file system support [ 36.867904][ T1] NET: Registered protocol family 38 [ 36.882488][ T1] xor: measuring software checksum speed [ 36.912442][ T1] 8regs : 626 MB/sec [ 36.934992][ T1] 32regs : 616 MB/sec [ 36.953205][ T1] arm64_neon : 770 MB/sec [ 36.953790][ T1] xor: using function: arm64_neon (770 MB/sec) [ 36.955516][ T1] async_tx: api initialized (async) [ 36.956151][ T1] Key type asymmetric registered [ 36.958317][ T1] Asymmetric key parser 'x509' registered [ 36.959065][ T1] Asymmetric key parser 'pkcs8' registered [ 36.959548][ T1] Key type pkcs7_test registered [ 36.959998][ T1] Asymmetric key parser 'tpm_parser' registered [ 36.998539][ T1] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 244) [ 37.026095][ T1] io scheduler mq-deadline registered [ 37.032469][ T1] io scheduler kyber registered [ 37.069979][ T1] io scheduler bfq registered [ 37.232313][ T1] pl061_gpio 9030000.pl061: PL061 GPIO chip registered [ 37.370426][ T1] pci-host-generic 4010000000.pcie: host bridge /pcie@10000000 ranges: [ 37.382495][ T1] pci-host-generic 4010000000.pcie: IO 0x003eff0000..0x003effffff -> 0x0000000000 [ 37.391256][ T1] pci-host-generic 4010000000.pcie: MEM 0x0010000000..0x003efeffff -> 0x0010000000 [ 37.394503][ T1] pci-host-generic 4010000000.pcie: MEM 0x8000000000..0xffffffffff -> 0x8000000000 [ 37.402463][ T1] pci-host-generic 4010000000.pcie: Memory resource size exceeds max for 32 bits [ 37.430919][ T1] pci-host-generic 4010000000.pcie: ECAM at [mem 0x4010000000-0x401fffffff] for [bus 00-ff] [ 37.454362][ T1] pci-host-generic 4010000000.pcie: PCI host bridge to bus 0000:00 [ 37.455887][ T1] pci_bus 0000:00: root bus resource [bus 00-ff] [ 37.457996][ T1] pci_bus 0000:00: root bus resource [io 0x0000-0xffff] [ 37.458810][ T1] pci_bus 0000:00: root bus resource [mem 0x10000000-0x3efeffff] [ 37.459454][ T1] pci_bus 0000:00: root bus resource [mem 0x8000000000-0xffffffffff] [ 37.466165][ T1] pci 0000:00:00.0: [1b36:0008] type 00 class 0x060000 [ 37.494388][ T1] pci 0000:00:01.0: [1af4:1005] type 00 class 0x00ff00 [ 37.499408][ T1] pci 0000:00:01.0: reg 0x10: [io 0x0000-0x001f] [ 37.501118][ T1] pci 0000:00:01.0: reg 0x20: [mem 0x00000000-0x00003fff 64bit pref] [ 37.518866][ T1] pci 0000:00:02.0: [1af4:1000] type 00 class 0x020000 [ 37.520097][ T1] pci 0000:00:02.0: reg 0x10: [io 0x0000-0x001f] [ 37.520916][ T1] pci 0000:00:02.0: reg 0x14: [mem 0x00000000-0x00000fff] [ 37.522120][ T1] pci 0000:00:02.0: reg 0x20: [mem 0x00000000-0x00003fff 64bit pref] [ 37.522858][ T1] pci 0000:00:02.0: reg 0x30: [mem 0x00000000-0x0003ffff pref] [ 37.541394][ T1] pci 0000:00:03.0: [1af4:1001] type 00 class 0x010000 [ 37.542645][ T1] pci 0000:00:03.0: reg 0x10: [io 0x0000-0x007f] [ 37.543430][ T1] pci 0000:00:03.0: reg 0x14: [mem 0x00000000-0x00000fff] [ 37.544618][ T1] pci 0000:00:03.0: reg 0x20: [mem 0x00000000-0x00003fff 64bit pref] [ 37.582379][ T1] pci 0000:00:02.0: BAR 6: assigned [mem 0x10000000-0x1003ffff pref] [ 37.583799][ T1] pci 0000:00:01.0: BAR 4: assigned [mem 0x8000000000-0x8000003fff 64bit pref] [ 37.584953][ T1] pci 0000:00:02.0: BAR 4: assigned [mem 0x8000004000-0x8000007fff 64bit pref] [ 37.585938][ T1] pci 0000:00:03.0: BAR 4: assigned [mem 0x8000008000-0x800000bfff 64bit pref] [ 37.587876][ T1] pci 0000:00:02.0: BAR 1: assigned [mem 0x10040000-0x10040fff] [ 37.590693][ T1] pci 0000:00:03.0: BAR 1: assigned [mem 0x10041000-0x10041fff] [ 37.591339][ T1] pci 0000:00:03.0: BAR 0: assigned [io 0x1000-0x107f] [ 37.591985][ T1] pci 0000:00:01.0: BAR 0: assigned [io 0x1080-0x109f] [ 37.592583][ T1] pci 0000:00:02.0: BAR 0: assigned [io 0x10a0-0x10bf] [ 37.654272][ T1] usbcore: registered new interface driver udlfb [ 37.754823][ T1] uvesafb: failed to execute /sbin/v86d [ 37.759369][ T1] uvesafb: make sure that the v86d helper is installed and executable [ 37.762495][ T1] uvesafb: Getting VBE info block failed (eax=0x4f00, err=-2) [ 37.763607][ T1] uvesafb: vbe_init() failed with -22 [ 37.767680][ T1] uvesafb: probe of uvesafb.0 failed with error -22 [ 37.773344][ T1] IPMI message handler: version 39.2 [ 37.783204][ T1] ipmi device interface [ 37.793127][ T1] ipmi_si: IPMI System Interface driver [ 37.848829][ T1] ipmi_si: Unable to find any System Interface(s) [ 37.901798][ T1] EINJ: ACPI disabled. [ 38.195022][ T1] virtio-pci 0000:00:01.0: enabling device (0000 -> 0003) [ 38.263662][ T1] virtio-pci 0000:00:02.0: enabling device (0000 -> 0003) [ 38.292628][ T1] virtio-pci 0000:00:03.0: enabling device (0000 -> 0003) [ 45.480374][ T1] N_HDLC line discipline registered with maxframe=4096 [ 45.484648][ T1] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled [ 45.811911][ T1] Cyclades driver 2.6 [ 45.824680][ T1] Initializing Nozomi driver 2.1d [ 45.870344][ T1] RocketPort device driver module, version 2.09, 12-June-2003 [ 45.874060][ T1] No rocketport ports found; unloading driver [ 46.014803][ T2293] random: fast init done [ 46.085018][ T2293] random: crng init done [ 46.182752][ T1] [drm] Initialized vgem 1.0.0 20120112 for vgem on minor 0 [ 46.309073][ T1] [drm] Initialized vkms 1.0.0 20180514 for vkms on minor 1 [ 46.931452][ T1] Console: switching to colour frame buffer device 128x48 [ 46.979746][ T1] platform vkms: [drm] fb0: vkmsdrmfb frame buffer device [ 46.983133][ T1] usbcore: registered new interface driver udl [ 47.216411][ T15] cacheinfo: Unable to detect cache hierarchy for CPU 0 [ 48.031756][ T1] brd: module loaded [ 48.648173][ C1] ------------[ cut here ]------------ [ 48.649049][ C1] WARNING: CPU: 1 PID: 13 at drivers/gpu/drm/vkms/vkms_crtc.c:21 vkms_vblank_simulate+0x26c/0x2f4 [ 48.649705][ C1] Modules linked in: [ 48.650487][ C1] CPU: 1 PID: 13 Comm: rcu_preempt Not tainted 5.12.0-rc2-syzkaller-00395-g344178334b09 #0 [ 48.651204][ C1] Hardware name: linux,dummy-virt (DT) [ 48.651902][ C1] pstate: 20000085 (nzCv daIf -PAN -UAO -TCO BTYPE=--) [ 48.652375][ C1] pc : vkms_vblank_simulate+0x26c/0x2f4 [ 48.652801][ C1] lr : vkms_vblank_simulate+0x90/0x2f4 [ 48.653233][ C1] sp : ffff00006a6bd360 [ 48.653595][ C1] x29: ffff00006a6bd360 x28: ffff000010b6de58 [ 48.654289][ C1] x27: dfff800000000000 x26: ffff00006a6a8540 [ 48.654796][ C1] x25: 1fffe0000d4d50b1 x24: 1fffe0000d4d50aa [ 48.655328][ C1] x23: ffff000010b6cd30 x22: 0000000000fe4c00 [ 48.655847][ C1] x21: ffff00006a6a8540 x20: ffff000010b6ce58 [ 48.656352][ C1] x19: ffff000010b6de58 x18: ffff00006a6a1b48 [ 48.656868][ C1] x17: 00000000000013e8 x16: 0000000000000007 [ 48.658867][ C1] x15: ffff8000197bf810 x14: 1fffe0000d4d7a22 [ 48.660578][ C1] x13: 0000000000000001 x12: 0000000000000033 [ 48.663202][ C1] x11: 1fffe000015ca11e x10: 0000000000000007 [ 48.665813][ C1] x9 : 1fffe000015ca126 x8 : ffff800017d14c00 [ 48.668748][ C1] x7 : 00000000f1f1f1f1 x6 : dfff800000000000 [ 48.670872][ C1] x5 : 7fffffffffffffff x4 : 0000000ade26b520 [ 48.672894][ C1] x3 : 0000000adf250120 x2 : 0000000ade26b520 [ 48.674908][ C1] x1 : 0000000adf250120 x0 : 0000000000000003 [ 48.676404][ C1] Call trace: [ 48.686653][ C1] vkms_vblank_simulate+0x26c/0x2f4 [ 48.688521][ C1] __hrtimer_run_queues+0x590/0xe40 [ 48.688927][ C1] hrtimer_interrupt+0x2d4/0x810 [ 48.689362][ C1] arch_timer_handler_phys+0x4c/0x70 [ 48.689775][ C1] handle_percpu_devid_irq+0x19c/0x330 [ 48.690249][ C1] __handle_domain_irq+0x11c/0x1f0 [ 48.690679][ C1] gic_handle_irq+0x5c/0x1b0 [ 48.691078][ C1] el1_irq+0xb4/0x180 [ 48.691458][ C1] _raw_spin_unlock_irq+0x80/0x15c [ 48.691933][ C1] finish_task_switch.isra.0+0x1b0/0x690 [ 48.692429][ C1] __schedule+0x814/0x1ac0 [ 48.693729][ C1] schedule+0xac/0x230 [ 48.694111][ C1] schedule_timeout+0x104/0x1f0 [ 48.696392][ C1] rcu_gp_kthread+0x8ec/0x2e9c [ 48.696816][ C1] kthread+0x320/0x3bc [ 48.697250][ C1] ret_from_fork+0x10/0x3c [ 48.698223][ C1] Kernel panic - not syncing: panic_on_warn set ... [ 48.706719][ C1] CPU: 1 PID: 13 Comm: rcu_preempt Not tainted 5.12.0-rc2-syzkaller-00395-g344178334b09 #0 [ 48.707357][ C1] Hardware name: linux,dummy-virt (DT) [ 48.707753][ C1] Call trace: [ 48.708036][ C1] dump_backtrace+0x0/0x3e0 [ 48.708402][ C1] show_stack+0x18/0x70 [ 48.708709][ C1] dump_stack+0x120/0x1a8 [ 48.709033][ C1] panic+0x31c/0x5c4 [ 48.709331][ C1] __warn+0x198/0x2f0 [ 48.709654][ C1] report_bug+0x154/0x210 [ 48.709990][ C1] bug_handler+0x38/0x90 [ 48.710301][ C1] brk_handler+0x114/0x230 [ 48.710620][ C1] do_debug_exception+0xc4/0x3b0 [ 48.710964][ C1] el1_dbg+0x60/0x80 [ 48.711290][ C1] el1_sync_handler+0x9c/0xd0 [ 48.711623][ C1] el1_sync+0x70/0x100 [ 48.711931][ C1] vkms_vblank_simulate+0x26c/0x2f4 [ 48.712284][ C1] __hrtimer_run_queues+0x590/0xe40 [ 48.712628][ C1] hrtimer_interrupt+0x2d4/0x810 [ 48.712958][ C1] arch_timer_handler_phys+0x4c/0x70 [ 48.713332][ C1] handle_percpu_devid_irq+0x19c/0x330 [ 48.713692][ C1] __handle_domain_irq+0x11c/0x1f0 [ 48.714020][ C1] gic_handle_irq+0x5c/0x1b0 [ 48.714364][ C1] el1_irq+0xb4/0x180 [ 48.714668][ C1] _raw_spin_unlock_irq+0x80/0x15c [ 48.715011][ C1] finish_task_switch.isra.0+0x1b0/0x690 [ 48.715393][ C1] __schedule+0x814/0x1ac0 [ 48.715713][ C1] schedule+0xac/0x230 [ 48.716018][ C1] schedule_timeout+0x104/0x1f0 [ 48.716369][ C1] rcu_gp_kthread+0x8ec/0x2e9c [ 48.716705][ C1] kthread+0x320/0x3bc [ 48.717046][ C1] ret_from_fork+0x10/0x3c [ 48.718796][ C1] SMP: stopping secondary CPUs [ 48.720646][ C1] Dumping ftrace buffer: [ 48.722357][ C1] (ftrace buffer empty) [ 48.723347][ C1] Kernel Offset: disabled [ 48.723677][ C1] CPU features: 0x00240022,61002082 [ 48.724422][ C1] Memory Limit: none [ 48.725655][ C1] Rebooting in 1 seconds..