[ 0.000000][ T0] Booting Linux on physical CPU 0x0000000000 [0x411fd070] [ 0.000000][ T0] Linux version 5.12.0-rc2-syzkaller-00338-gf78d76e72a46 (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] ********************************************************** [ 0.000000][ T0] ** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE ** [ 0.000000][ T0] ** ** [ 0.000000][ T0] ** This system shows unhashed kernel memory addresses ** [ 0.000000][ T0] ** via the console, logs, and other interfaces. This ** [ 0.000000][ T0] ** might reduce the security of your system. ** [ 0.000000][ T0] ** ** [ 0.000000][ T0] ** If you see this message and you are not debugging ** [ 0.000000][ T0] ** the kernel, report this immediately to your system ** [ 0.000000][ T0] ** administrator! ** [ 0.000000][ T0] ** ** [ 0.000000][ T0] ** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE ** [ 0.000000][ T0] ********************************************************** [ 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 earlyprintk=serial net.ifnames=0 sysctl.kernel.hung_task_all_cpu_backtrace=1 ima_policy=tcb nf-conntrack-ftp.ports=20000 nf-conntrack-tftp.ports=20000 nf-conntrack-sip.ports=20000 nf-conntrack-irc.ports=20000 nf-conntrack-sane.ports=20000 binder.debug_mask=0 rcupdate.rcu_expedited=1 no_hash_pointers root=/dev/vda console=ttyAMA0 watchdog_thresh=165 workqueue.watchdog_thresh=420 dummy_hcd.num=2 panic_on_warn=1 [ 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, 31812K 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] All grace periods are expedited (rcu_expedited). [ 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 [ 0.000164][ T0] sched_clock: 56 bits at 62MHz, resolution 16ns, wraps every 4398046511096ns [ 0.028943][ T0] Console: colour dummy device 80x25 [ 0.031675][ T0] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar [ 0.031920][ T0] ... MAX_LOCKDEP_SUBCLASSES: 8 [ 0.032091][ T0] ... MAX_LOCK_DEPTH: 48 [ 0.032272][ T0] ... MAX_LOCKDEP_KEYS: 8192 [ 0.032443][ T0] ... CLASSHASH_SIZE: 4096 [ 0.032614][ T0] ... MAX_LOCKDEP_ENTRIES: 32768 [ 0.032785][ T0] ... MAX_LOCKDEP_CHAINS: 65536 [ 0.032956][ T0] ... CHAINHASH_SIZE: 32768 [ 0.033127][ T0] memory used by lock dependency info: 6365 kB [ 0.033314][ T0] memory used for stack traces: 4224 kB [ 0.033484][ T0] per task-struct memory footprint: 1920 bytes [ 0.041168][ T0] Calibrating delay loop (skipped), value calculated using timer frequency.. 125.00 BogoMIPS (lpj=625000) [ 0.041869][ T0] pid_max: default: 32768 minimum: 301 [ 0.046549][ T0] LSM: Security Framework initializing [ 0.048735][ T0] Yama: becoming mindful. [ 0.053617][ T0] TOMOYO Linux initialized [ 0.055654][ T0] SELinux: Initializing. [ 0.060196][ T0] Mount-cache hash table entries: 4096 (order: 3, 32768 bytes, linear) [ 0.060563][ T0] Mountpoint-cache hash table entries: 4096 (order: 3, 32768 bytes, linear) [ 0.264512][ T1] Running RCU-tasks wait API self tests [ 0.425361][ T1] rcu: Hierarchical SRCU implementation. [ 0.435584][ T10] Callback from call_rcu_tasks_trace() invoked. [ 0.537841][ T1] EFI services will not be available. [ 0.555524][ T1] smp: Bringing up secondary CPUs ... [ 0.597593][ T0] Detected PIPT I-cache on CPU1 [ 0.600596][ T0] CPU1: Booted secondary processor 0x0000000001 [0x411fd070] [ 0.629957][ T1] smp: Brought up 1 node, 2 CPUs [ 0.630532][ T1] SMP: Total of 2 processors activated. [ 0.630834][ T1] CPU features: detected: 32-bit EL0 Support [ 0.631142][ T1] CPU features: detected: CRC32 instructions [ 0.631440][ T1] CPU features: detected: 32-bit EL1 Support [ 0.668944][ T9] Callback from call_rcu_tasks() invoked. [ 1.657683][ T1] CPU: All CPU(s) started at EL2 [ 1.661599][ T14] alternatives: patching kernel code [ 1.782575][ T1] devtmpfs: initialized [ 2.440333][ T1] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns [ 2.442048][ T1] futex hash table entries: 512 (order: 4, 65536 bytes, linear) [ 2.859880][ T1] DMI not present or invalid. [ 2.913240][ T1] NET: Registered protocol family 16 [ 3.053522][ T1] DMA: preallocated 256 KiB GFP_KERNEL pool for atomic allocations [ 3.058088][ T1] DMA: preallocated 256 KiB GFP_KERNEL|GFP_DMA pool for atomic allocations [ 3.069973][ T1] DMA: preallocated 256 KiB GFP_KERNEL|GFP_DMA32 pool for atomic allocations [ 3.074745][ T1] audit: initializing netlink subsys (disabled) [ 3.087893][ T33] audit: type=2000 audit(2.820:1): state=initialized audit_enabled=0 res=1 [ 3.298691][ T1] thermal_sys: Registered thermal governor 'step_wise' [ 3.299070][ T1] thermal_sys: Registered thermal governor 'power_allocator' [ 3.306275][ T1] cpuidle: using governor menu [ 3.307646][ T1] NET: Registered protocol family 42 [ 3.343181][ T1] hw-breakpoint: found 6 breakpoint and 4 watchpoint registers. [ 3.347289][ T1] ASID allocator initialised with 65536 entries [ 3.358404][ T1] Serial: AMBA PL011 UART driver [ 4.101979][ T1] 9000000.pl011: ttyAMA0 at MMIO 0x9000000 (irq = 48, base_baud = 0) is a PL011 rev1 [ 4.228899][ T1] printk: console [ttyAMA0] enabled [ 16.868289][ T1] HugeTLB registered 1.00 GiB page size, pre-allocated 0 pages [ 16.869116][ T1] HugeTLB registered 32.0 MiB page size, pre-allocated 0 pages [ 16.869551][ T1] HugeTLB registered 2.00 MiB page size, pre-allocated 0 pages [ 16.870272][ T1] HugeTLB registered 64.0 KiB page size, pre-allocated 0 pages [ 17.246694][ T1] cryptd: max_cpu_qlen set to 1000 [ 18.041822][ T1] raid6: neonx8 gen() 768 MB/s [ 18.226591][ T1] raid6: neonx8 xor() 372 MB/s [ 18.409837][ T1] raid6: neonx4 gen() 826 MB/s [ 18.595433][ T1] raid6: neonx4 xor() 570 MB/s [ 18.776202][ T1] raid6: neonx2 gen() 995 MB/s [ 18.957208][ T1] raid6: neonx2 xor() 483 MB/s [ 19.140816][ T1] raid6: neonx1 gen() 629 MB/s [ 19.322327][ T1] raid6: neonx1 xor() 334 MB/s [ 19.505194][ T1] raid6: int64x8 gen() 307 MB/s [ 19.689763][ T1] raid6: int64x8 xor() 222 MB/s [ 19.870135][ T1] raid6: int64x4 gen() 524 MB/s [ 20.053937][ T1] raid6: int64x4 xor() 337 MB/s [ 20.236603][ T1] raid6: int64x2 gen() 509 MB/s [ 20.421693][ T1] raid6: int64x2 xor() 343 MB/s [ 20.603660][ T1] raid6: int64x1 gen() 413 MB/s [ 20.784027][ T1] raid6: int64x1 xor() 266 MB/s [ 20.785055][ T1] raid6: using algorithm neonx2 gen() 995 MB/s [ 20.785522][ T1] raid6: .... xor() 483 MB/s, rmw enabled [ 20.786251][ T1] raid6: using neon recovery algorithm [ 20.820064][ T1] ACPI: Interpreter disabled. [ 20.915223][ T1] iommu: Default domain type: Translated [ 20.933660][ T1] vgaarb: loaded [ 21.021915][ T1] SCSI subsystem initialized [ 21.145526][ T1] usbcore: registered new interface driver usbfs [ 21.161023][ T1] usbcore: registered new interface driver hub [ 21.172105][ T1] usbcore: registered new device driver usb [ 21.278516][ T1] pps_core: LinuxPPS API ver. 1 registered [ 21.279225][ T1] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it> [ 21.299708][ T1] PTP clock support registered [ 21.320000][ T1] EDAC MC: Ver: 3.0.0 [ 21.504287][ T1] Advanced Linux Sound Architecture Driver Initialized. [ 21.625336][ T1] Bluetooth: Core ver 2.22 [ 21.629408][ T1] NET: Registered protocol family 31 [ 21.629912][ T1] Bluetooth: HCI device and connection manager initialized [ 21.631284][ T1] Bluetooth: HCI socket layer initialized [ 21.632061][ T1] Bluetooth: L2CAP socket layer initialized [ 21.635491][ T1] Bluetooth: SCO socket layer initialized [ 21.637495][ T1] NET: Registered protocol family 8 [ 21.638022][ T1] NET: Registered protocol family 20 [ 21.643477][ T1] NetLabel: Initializing [ 21.645139][ T1] NetLabel: domain hash size = 128 [ 21.645583][ T1] NetLabel: protocols = UNLABELED CIPSOv4 CALIPSO [ 21.655713][ T1] NetLabel: unlabeled traffic allowed by default [ 21.680595][ T1] nfc: nfc_init: NFC Core ver 0.1 [ 21.692470][ T1] NET: Registered protocol family 39 [ 21.739962][ T1] clocksource: Switched to clocksource arch_sys_counter [ 28.315945][ T1] VFS: Disk quotas dquot_6.6.0 [ 28.320959][ T1] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes) [ 28.338098][ T1] FS-Cache: Loaded [ 28.366381][ T1] CacheFiles: Loaded [ 28.392461][ T1] TOMOYO: 2.6.0 [ 28.394186][ T1] Mandatory Access Control activated. [ 28.413547][ T1] pnp: PnP ACPI: disabled [ 29.806531][ T1] NET: Registered protocol family 2 [ 29.885598][ T1] tcp_listen_portaddr_hash hash table entries: 1024 (order: 4, 81920 bytes, linear) [ 29.890662][ T1] TCP established hash table entries: 16384 (order: 5, 131072 bytes, linear) [ 29.912732][ T1] TCP bind hash table entries: 16384 (order: 8, 1179648 bytes, linear) [ 29.927326][ T1] TCP: Hash tables configured (established 16384 bind 16384) [ 29.945845][ T1] MPTCP token hash table entries: 2048 (order: 5, 180224 bytes, linear) [ 29.957565][ T1] UDP hash table entries: 1024 (order: 5, 163840 bytes, linear) [ 29.964757][ T1] UDP-Lite hash table entries: 1024 (order: 5, 163840 bytes, linear) [ 29.981892][ T1] NET: Registered protocol family 1 [ 30.013914][ T1] RPC: Registered named UNIX socket transport module. [ 30.016153][ T1] RPC: Registered udp transport module. [ 30.017571][ T1] RPC: Registered tcp transport module. [ 30.019779][ T1] RPC: Registered tcp NFSv4.1 backchannel transport module. [ 30.066010][ T1] NET: Registered protocol family 44 [ 30.068364][ T1] PCI: CLS 0 bytes, default 64 [ 30.215066][ T1] hw perfevents: enabled with armv8_pmuv3 PMU driver, 5 counters available [ 30.234099][ T1] kvm [1]: Guests without required CPU erratum workarounds can deadlock system! [ 30.234099][ T1] Only trusted guests should be used on this system. [ 30.235841][ T1] kvm [1]: IPA Size Limit: 44 bits [ 30.540276][ T1] kvm [1]: vgic interrupt IRQ9 [ 30.546235][ T1] kvm [1]: Hyp mode initialized successfully [ 31.337428][ T1] Initialise system trusted keyrings [ 31.366853][ T1] workingset: timestamp_bits=42 max_order=19 bucket_order=0 [ 32.282917][ T1] zbud: loaded [ 32.457164][ T1] DLM installed [ 32.599919][ T1] squashfs: version 4.0 (2009/01/31) Phillip Lougher [ 32.765982][ T1] NFS: Registering the id_resolver key type [ 32.768170][ T1] Key type id_resolver registered [ 32.771193][ T1] Key type id_legacy registered [ 32.782482][ T1] nfs4filelayout_init: NFSv4 File Layout Driver Registering... [ 32.801104][ T1] fuse: init (API version 7.33) [ 32.874568][ T1] 9p: Installing v9fs 9p2000 file system support [ 33.004828][ T1] NET: Registered protocol family 38 [ 33.016243][ T1] xor: measuring software checksum speed [ 33.036306][ T1] 8regs : 593 MB/sec [ 33.053083][ T1] 32regs : 1005 MB/sec [ 33.069817][ T1] arm64_neon : 681 MB/sec [ 33.070579][ T1] xor: using function: 32regs (1005 MB/sec) [ 33.072265][ T1] async_tx: api initialized (async) [ 33.072727][ T1] Key type asymmetric registered [ 33.073231][ T1] Asymmetric key parser 'x509' registered [ 33.073726][ T1] Asymmetric key parser 'pkcs8' registered [ 33.074024][ T1] Key type pkcs7_test registered [ 33.074284][ T1] Asymmetric key parser 'tpm_parser' registered [ 33.077238][ T1] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 244) [ 33.086837][ T1] io scheduler mq-deadline registered [ 33.087664][ T1] io scheduler kyber registered [ 33.105394][ T1] io scheduler bfq registered [ 33.221977][ T1] pl061_gpio 9030000.pl061: PL061 GPIO chip registered [ 33.338389][ T1] pci-host-generic 4010000000.pcie: host bridge /pcie@10000000 ranges: [ 33.348342][ T1] pci-host-generic 4010000000.pcie: IO 0x003eff0000..0x003effffff -> 0x0000000000 [ 33.354135][ T1] pci-host-generic 4010000000.pcie: MEM 0x0010000000..0x003efeffff -> 0x0010000000 [ 33.357395][ T1] pci-host-generic 4010000000.pcie: MEM 0x8000000000..0xffffffffff -> 0x8000000000 [ 33.363481][ T1] pci-host-generic 4010000000.pcie: Memory resource size exceeds max for 32 bits [ 33.385485][ T1] pci-host-generic 4010000000.pcie: ECAM at [mem 0x4010000000-0x401fffffff] for [bus 00-ff] [ 33.398429][ T1] pci-host-generic 4010000000.pcie: PCI host bridge to bus 0000:00 [ 33.401238][ T1] pci_bus 0000:00: root bus resource [bus 00-ff] [ 33.403548][ T1] pci_bus 0000:00: root bus resource [io 0x0000-0xffff] [ 33.405637][ T1] pci_bus 0000:00: root bus resource [mem 0x10000000-0x3efeffff] [ 33.408087][ T1] pci_bus 0000:00: root bus resource [mem 0x8000000000-0xffffffffff] [ 33.415470][ T1] pci 0000:00:00.0: [1b36:0008] type 00 class 0x060000 [ 33.436814][ T1] pci 0000:00:01.0: [1af4:1005] type 00 class 0x00ff00 [ 33.438704][ T1] pci 0000:00:01.0: reg 0x10: [io 0x0000-0x001f] [ 33.442568][ T1] pci 0000:00:01.0: reg 0x20: [mem 0x00000000-0x00003fff 64bit pref] [ 33.457638][ T1] pci 0000:00:02.0: [1af4:1000] type 00 class 0x020000 [ 33.461463][ T1] pci 0000:00:02.0: reg 0x10: [io 0x0000-0x001f] [ 33.462212][ T1] pci 0000:00:02.0: reg 0x14: [mem 0x00000000-0x00000fff] [ 33.463263][ T1] pci 0000:00:02.0: reg 0x20: [mem 0x00000000-0x00003fff 64bit pref] [ 33.463991][ T1] pci 0000:00:02.0: reg 0x30: [mem 0x00000000-0x0003ffff pref] [ 33.477339][ T1] pci 0000:00:03.0: [1af4:1001] type 00 class 0x010000 [ 33.478515][ T1] pci 0000:00:03.0: reg 0x10: [io 0x0000-0x007f] [ 33.481936][ T1] pci 0000:00:03.0: reg 0x14: [mem 0x00000000-0x00000fff] [ 33.483116][ T1] pci 0000:00:03.0: reg 0x20: [mem 0x00000000-0x00003fff 64bit pref] [ 33.506995][ T1] pci 0000:00:02.0: BAR 6: assigned [mem 0x10000000-0x1003ffff pref] [ 33.508545][ T1] pci 0000:00:01.0: BAR 4: assigned [mem 0x8000000000-0x8000003fff 64bit pref] [ 33.511316][ T1] pci 0000:00:02.0: BAR 4: assigned [mem 0x8000004000-0x8000007fff 64bit pref] [ 33.512309][ T1] pci 0000:00:03.0: BAR 4: assigned [mem 0x8000008000-0x800000bfff 64bit pref] [ 33.513163][ T1] pci 0000:00:02.0: BAR 1: assigned [mem 0x10040000-0x10040fff] [ 33.513724][ T1] pci 0000:00:03.0: BAR 1: assigned [mem 0x10041000-0x10041fff] [ 33.514284][ T1] pci 0000:00:03.0: BAR 0: assigned [io 0x1000-0x107f] [ 33.514856][ T1] pci 0000:00:01.0: BAR 0: assigned [io 0x1080-0x109f] [ 33.516441][ T1] pci 0000:00:02.0: BAR 0: assigned [io 0x10a0-0x10bf] [ 33.560679][ T1] usbcore: registered new interface driver udlfb [ 33.628026][ T1] uvesafb: failed to execute /sbin/v86d [ 33.632547][ T1] uvesafb: make sure that the v86d helper is installed and executable [ 33.633749][ T1] uvesafb: Getting VBE info block failed (eax=0x4f00, err=-2) [ 33.634681][ T1] uvesafb: vbe_init() failed with -22 [ 33.637858][ T1] uvesafb: probe of uvesafb.0 failed with error -22 [ 33.650991][ T1] IPMI message handler: version 39.2 [ 33.664337][ T1] ipmi device interface [ 33.681271][ T1] ipmi_si: IPMI System Interface driver [ 33.734294][ T1] ipmi_si: Unable to find any System Interface(s) [ 33.786192][ T1] EINJ: ACPI disabled. [ 34.042815][ T1] virtio-pci 0000:00:01.0: enabling device (0000 -> 0003) [ 34.065177][ T1] virtio-pci 0000:00:02.0: enabling device (0000 -> 0003) [ 34.082366][ T1] virtio-pci 0000:00:03.0: enabling device (0000 -> 0003) [ 41.184873][ T1] N_HDLC line discipline registered with maxframe=4096 [ 41.191309][ T1] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled [ 41.534480][ T1] Cyclades driver 2.6 [ 41.556864][ T1] Initializing Nozomi driver 2.1d [ 41.585404][ T1] RocketPort device driver module, version 2.09, 12-June-2003 [ 41.590701][ T1] No rocketport ports found; unloading driver [ 41.737591][ T2292] random: fast init done [ 41.765178][ T2292] random: crng init done [ 41.925916][ T1] [drm] Initialized vgem 1.0.0 20120112 for vgem on minor 0 [ 42.042043][ T1] [drm] Initialized vkms 1.0.0 20180514 for vkms on minor 1 [ 42.656346][ T1] Console: switching to colour frame buffer device 128x48 [ 42.714440][ T1] platform vkms: [drm] fb0: vkmsdrmfb frame buffer device [ 42.722078][ T1] usbcore: registered new interface driver udl [ 42.930364][ T15] cacheinfo: Unable to detect cache hierarchy for CPU 0 [ 43.731739][ T1] brd: module loaded [ 45.294279][ T1] loop: module loaded [ 46.419861][ C1] ------------[ cut here ]------------ [ 46.420981][ C1] WARNING: CPU: 1 PID: 13 at drivers/gpu/drm/vkms/vkms_crtc.c:21 vkms_vblank_simulate+0x26c/0x2f4 [ 46.423199][ C1] Modules linked in: [ 46.424127][ C1] CPU: 1 PID: 13 Comm: rcu_preempt Not tainted 5.12.0-rc2-syzkaller-00338-gf78d76e72a46 #0 [ 46.427127][ C1] Hardware name: linux,dummy-virt (DT) [ 46.428130][ C1] pstate: 20000085 (nzCv daIf -PAN -UAO -TCO BTYPE=--) [ 46.428602][ C1] pc : vkms_vblank_simulate+0x26c/0x2f4 [ 46.429069][ C1] lr : vkms_vblank_simulate+0x90/0x2f4 [ 46.429442][ C1] sp : ffff00006a6bd360 [ 46.430939][ C1] x29: ffff00006a6bd360 x28: ffff00000ae45e58 [ 46.431632][ C1] x27: dfff800000000000 x26: ffff00006a6a8540 [ 46.435234][ C1] x25: 1fffe0000d4d50b1 x24: 1fffe0000d4d50aa [ 46.435943][ C1] x23: ffff00000ae44d30 x22: 0000000000fe4c00 [ 46.436470][ C1] x21: ffff00006a6a8540 x20: ffff00000ae44e58 [ 46.437003][ C1] x19: ffff00000ae45e58 x18: ffff00006a6a1b48 [ 46.437505][ C1] x17: 00000000000013e8 x16: 0000000000000003 [ 46.438016][ C1] x15: ffff8000197bf810 x14: 1fffe0000d4d7a22 [ 46.438542][ C1] x13: 0000000000000001 x12: 0000000000000033 [ 46.440522][ C1] x11: 1fffe000015ca11e x10: 0000000000000007 [ 46.444149][ C1] x9 : 1fffe000015ca126 x8 : ffff800017d14c00 [ 46.445115][ C1] x7 : 00000000f1f1f1f1 x6 : dfff800000000000 [ 46.445626][ C1] x5 : 7fffffffffffffff x4 : 0000000a6bb25c10 [ 46.446151][ C1] x3 : 0000000a6cb0a810 x2 : 0000000a6bb25c10 [ 46.447152][ C1] x1 : 0000000a6cb0a810 x0 : 0000000000000002 [ 46.448146][ C1] Call trace: [ 46.448535][ C1] vkms_vblank_simulate+0x26c/0x2f4 [ 46.449099][ C1] __hrtimer_run_queues+0x590/0xe40 [ 46.449472][ C1] hrtimer_interrupt+0x2d4/0x810 [ 46.449928][ C1] arch_timer_handler_phys+0x4c/0x70 [ 46.450331][ C1] handle_percpu_devid_irq+0x19c/0x330 [ 46.450689][ C1] __handle_domain_irq+0x11c/0x1f0 [ 46.451025][ C1] gic_handle_irq+0x5c/0x1b0 [ 46.451361][ C1] el1_irq+0xb4/0x180 [ 46.451722][ C1] _raw_spin_unlock_irq+0x80/0x15c [ 46.452066][ C1] finish_task_switch.isra.0+0x1b0/0x690 [ 46.452436][ C1] __schedule+0x814/0x1ac0 [ 46.452751][ C1] schedule+0xac/0x230 [ 46.453044][ C1] schedule_timeout+0x104/0x1f0 [ 46.453386][ C1] rcu_gp_kthread+0x8ec/0x2e9c [ 46.453717][ C1] kthread+0x320/0x3bc [ 46.454032][ C1] ret_from_fork+0x10/0x3c [ 46.455050][ C1] Kernel panic - not syncing: panic_on_warn set ... [ 46.455826][ C1] CPU: 1 PID: 13 Comm: rcu_preempt Not tainted 5.12.0-rc2-syzkaller-00338-gf78d76e72a46 #0 [ 46.456287][ C1] Hardware name: linux,dummy-virt (DT) [ 46.456680][ C1] Call trace: [ 46.456964][ C1] dump_backtrace+0x0/0x3e0 [ 46.457329][ C1] show_stack+0x18/0x70 [ 46.457671][ C1] dump_stack+0x120/0x1a8 [ 46.458006][ C1] panic+0x31c/0x5c4 [ 46.458330][ C1] __warn+0x198/0x2f0 [ 46.458663][ C1] report_bug+0x154/0x210 [ 46.459131][ C1] bug_handler+0x38/0x90 [ 46.459462][ C1] brk_handler+0x114/0x230 [ 46.459848][ C1] do_debug_exception+0xc4/0x3b0 [ 46.460194][ C1] el1_dbg+0x60/0x80 [ 46.460524][ C1] el1_sync_handler+0x9c/0xd0 [ 46.460864][ C1] el1_sync+0x70/0x100 [ 46.461187][ C1] vkms_vblank_simulate+0x26c/0x2f4 [ 46.462044][ C1] __hrtimer_run_queues+0x590/0xe40 [ 46.462453][ C1] hrtimer_interrupt+0x2d4/0x810 [ 46.462777][ C1] arch_timer_handler_phys+0x4c/0x70 [ 46.463131][ C1] handle_percpu_devid_irq+0x19c/0x330 [ 46.463553][ C1] __handle_domain_irq+0x11c/0x1f0 [ 46.463928][ C1] gic_handle_irq+0x5c/0x1b0 [ 46.464245][ C1] el1_irq+0xb4/0x180 [ 46.464591][ C1] _raw_spin_unlock_irq+0x80/0x15c [ 46.464920][ C1] finish_task_switch.isra.0+0x1b0/0x690 [ 46.465240][ C1] __schedule+0x814/0x1ac0 [ 46.465626][ C1] schedule+0xac/0x230 [ 46.465955][ C1] schedule_timeout+0x104/0x1f0 [ 46.466287][ C1] rcu_gp_kthread+0x8ec/0x2e9c [ 46.466643][ C1] kthread+0x320/0x3bc [ 46.466963][ C1] ret_from_fork+0x10/0x3c [ 46.468964][ C1] SMP: stopping secondary CPUs [ 46.471162][ C1] Dumping ftrace buffer: [ 46.472856][ C1] (ftrace buffer empty) [ 46.474807][ C1] Kernel Offset: disabled [ 46.475692][ C1] CPU features: 0x00240022,61002082 [ 46.477489][ C1] Memory Limit: none [ 46.479938][ C1] Rebooting in 1 seconds..