[ 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 [ 0.000170][ T0] sched_clock: 56 bits at 62MHz, resolution 16ns, wraps every 4398046511096ns [ 0.029268][ T0] Console: colour dummy device 80x25 [ 0.032006][ T0] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar [ 0.032230][ T0] ... MAX_LOCKDEP_SUBCLASSES: 8 [ 0.032389][ T0] ... MAX_LOCK_DEPTH: 48 [ 0.032545][ T0] ... MAX_LOCKDEP_KEYS: 8192 [ 0.032720][ T0] ... CLASSHASH_SIZE: 4096 [ 0.032875][ T0] ... MAX_LOCKDEP_ENTRIES: 32768 [ 0.033029][ T0] ... MAX_LOCKDEP_CHAINS: 65536 [ 0.033185][ T0] ... CHAINHASH_SIZE: 32768 [ 0.033343][ T0] memory used by lock dependency info: 6365 kB [ 0.033501][ T0] memory used for stack traces: 4224 kB [ 0.033667][ T0] per task-struct memory footprint: 1920 bytes [ 0.039985][ T0] Calibrating delay loop (skipped), value calculated using timer frequency.. 125.00 BogoMIPS (lpj=625000) [ 0.041770][ T0] pid_max: default: 32768 minimum: 301 [ 0.046546][ T0] LSM: Security Framework initializing [ 0.048916][ T0] Yama: becoming mindful. [ 0.054288][ T0] TOMOYO Linux initialized [ 0.056423][ T0] SELinux: Initializing. [ 0.061011][ T0] Mount-cache hash table entries: 4096 (order: 3, 32768 bytes, linear) [ 0.061369][ T0] Mountpoint-cache hash table entries: 4096 (order: 3, 32768 bytes, linear) [ 0.264583][ T1] Running RCU-tasks wait API self tests [ 0.428590][ T10] Callback from call_rcu_tasks_trace() invoked. [ 0.432298][ T1] rcu: Hierarchical SRCU implementation. [ 0.517790][ T1] EFI services will not be available. [ 0.538464][ T1] smp: Bringing up secondary CPUs ... [ 0.585525][ T0] Detected PIPT I-cache on CPU1 [ 0.588808][ T0] CPU1: Booted secondary processor 0x0000000001 [0x411fd070] [ 0.617787][ T1] smp: Brought up 1 node, 2 CPUs [ 0.618468][ T1] SMP: Total of 2 processors activated. [ 0.618775][ T1] CPU features: detected: 32-bit EL0 Support [ 0.619079][ T1] CPU features: detected: CRC32 instructions [ 0.622479][ T1] CPU features: detected: 32-bit EL1 Support [ 0.654633][ T9] Callback from call_rcu_tasks() invoked. [ 1.410563][ T1] CPU: All CPU(s) started at EL2 [ 1.413197][ T14] alternatives: patching kernel code [ 1.514348][ T1] devtmpfs: initialized [ 2.004455][ T1] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns [ 2.005550][ T1] futex hash table entries: 512 (order: 4, 65536 bytes, linear) [ 2.323194][ T1] DMI not present or invalid. [ 2.369679][ T1] NET: Registered protocol family 16 [ 2.517594][ T1] DMA: preallocated 256 KiB GFP_KERNEL pool for atomic allocations [ 2.523635][ T1] DMA: preallocated 256 KiB GFP_KERNEL|GFP_DMA pool for atomic allocations [ 2.534866][ T1] DMA: preallocated 256 KiB GFP_KERNEL|GFP_DMA32 pool for atomic allocations [ 2.540466][ T1] audit: initializing netlink subsys (disabled) [ 2.555291][ T34] audit: type=2000 audit(2.340:1): state=initialized audit_enabled=0 res=1 [ 2.768771][ T1] thermal_sys: Registered thermal governor 'step_wise' [ 2.769184][ T1] thermal_sys: Registered thermal governor 'power_allocator' [ 2.777569][ T1] cpuidle: using governor menu [ 2.787842][ T1] hw-breakpoint: found 6 breakpoint and 4 watchpoint registers. [ 2.791899][ T1] ASID allocator initialised with 65536 entries [ 2.812834][ T1] Serial: AMBA PL011 UART driver [ 3.522413][ T1] 9000000.pl011: ttyAMA0 at MMIO 0x9000000 (irq = 48, base_baud = 0) is a PL011 rev1 [ 3.598363][ T1] printk: console [ttyAMA0] enabled [ 12.328083][ T1] HugeTLB registered 1.00 GiB page size, pre-allocated 0 pages [ 12.329301][ T1] HugeTLB registered 32.0 MiB page size, pre-allocated 0 pages [ 12.329764][ T1] HugeTLB registered 2.00 MiB page size, pre-allocated 0 pages [ 12.330193][ T1] HugeTLB registered 64.0 KiB page size, pre-allocated 0 pages [ 12.701551][ T1] cryptd: max_cpu_qlen set to 1000 [ 13.433482][ T1] raid6: neonx8 gen() 744 MB/s [ 13.620849][ T1] raid6: neonx8 xor() 367 MB/s [ 13.808798][ T1] raid6: neonx4 gen() 839 MB/s [ 13.992722][ T1] raid6: neonx4 xor() 443 MB/s [ 14.172535][ T1] raid6: neonx2 gen() 1140 MB/s [ 14.355786][ T1] raid6: neonx2 xor() 534 MB/s [ 14.537223][ T1] raid6: neonx1 gen() 679 MB/s [ 14.718371][ T1] raid6: neonx1 xor() 263 MB/s [ 14.902252][ T1] raid6: int64x8 gen() 343 MB/s [ 15.086918][ T1] raid6: int64x8 xor() 263 MB/s [ 15.268128][ T1] raid6: int64x4 gen() 534 MB/s [ 15.454965][ T1] raid6: int64x4 xor() 379 MB/s [ 15.632896][ T1] raid6: int64x2 gen() 556 MB/s [ 15.817845][ T1] raid6: int64x2 xor() 325 MB/s [ 16.001950][ T1] raid6: int64x1 gen() 532 MB/s [ 16.184400][ T1] raid6: int64x1 xor() 274 MB/s [ 16.186130][ T1] raid6: using algorithm neonx2 gen() 1140 MB/s [ 16.186575][ T1] raid6: .... xor() 534 MB/s, rmw enabled [ 16.187353][ T1] raid6: using neon recovery algorithm [ 16.239964][ T1] ACPI: Interpreter disabled. [ 16.322417][ T1] iommu: Default domain type: Translated [ 16.340428][ T1] vgaarb: loaded [ 16.417769][ T1] SCSI subsystem initialized [ 16.494239][ T1] usbcore: registered new interface driver usbfs [ 16.509495][ T1] usbcore: registered new interface driver hub [ 16.513061][ T1] usbcore: registered new device driver usb [ 16.548379][ T1] pps_core: LinuxPPS API ver. 1 registered [ 16.549233][ T1] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti [ 16.554724][ T1] PTP clock support registered [ 16.567972][ T1] EDAC MC: Ver: 3.0.0 [ 16.876359][ T1] Advanced Linux Sound Architecture Driver Initialized. [ 16.998215][ T1] NetLabel: Initializing [ 17.002895][ T1] NetLabel: domain hash size = 128 [ 17.004731][ T1] NetLabel: protocols = UNLABELED CIPSOv4 CALIPSO [ 17.010404][ T1] NetLabel: unlabeled traffic allowed by default [ 17.025467][ T1] nfc: nfc_init: NFC Core ver 0.1 [ 17.030346][ T1] NET: Registered protocol family 39 [ 17.047045][ T1] clocksource: Switched to clocksource arch_sys_counter [ 21.294125][ T1] VFS: Disk quotas dquot_6.6.0 [ 21.297335][ T1] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes) [ 21.310784][ T1] FS-Cache: Loaded [ 21.329583][ T1] CacheFiles: Loaded [ 21.341963][ T1] TOMOYO: 2.6.0 [ 21.342602][ T1] Mandatory Access Control activated. [ 21.352816][ T1] pnp: PnP ACPI: disabled [ 22.493294][ T1] NET: Registered protocol family 2 [ 22.554412][ T1] tcp_listen_portaddr_hash hash table entries: 1024 (order: 4, 81920 bytes, linear) [ 22.560593][ T1] TCP established hash table entries: 16384 (order: 5, 131072 bytes, linear) [ 22.581238][ T1] TCP bind hash table entries: 16384 (order: 8, 1179648 bytes, linear) [ 22.599948][ T1] TCP: Hash tables configured (established 16384 bind 16384) [ 22.623548][ T1] MPTCP token hash table entries: 2048 (order: 5, 180224 bytes, linear) [ 22.630984][ T1] UDP hash table entries: 1024 (order: 5, 163840 bytes, linear) [ 22.638994][ T1] UDP-Lite hash table entries: 1024 (order: 5, 163840 bytes, linear) [ 22.655514][ T1] NET: Registered protocol family 1 [ 22.659123][ T1] NET: Registered protocol family 44 [ 22.660252][ T1] PCI: CLS 0 bytes, default 64 [ 22.779623][ T1] hw perfevents: enabled with armv8_pmuv3 PMU driver, 5 counters available [ 22.785861][ T1] kvm [1]: Guests without required CPU erratum workarounds can deadlock system! [ 22.785861][ T1] Only trusted guests should be used on this system. [ 22.793819][ T1] kvm [1]: IPA Size Limit: 44 bits [ 23.001742][ T1] kvm [1]: vgic interrupt IRQ9 [ 23.008831][ T1] kvm [1]: Hyp mode initialized successfully [ 23.624133][ T1] Initialise system trusted keyrings [ 23.671247][ T1] workingset: timestamp_bits=42 max_order=19 bucket_order=0 [ 24.398721][ T1] zbud: loaded [ 24.543187][ T1] DLM installed [ 24.768555][ T1] fuse: init (API version 7.33) [ 24.948930][ T1] NET: Registered protocol family 38 [ 24.962717][ T1] xor: measuring software checksum speed [ 24.984145][ T1] 8regs : 607 MB/sec [ 25.007604][ T1] 32regs : 532 MB/sec [ 25.029272][ T1] arm64_neon : 529 MB/sec [ 25.031331][ T1] xor: using function: 8regs (607 MB/sec) [ 25.034648][ T1] async_tx: api initialized (async) [ 25.038372][ T1] Key type asymmetric registered [ 25.039580][ T1] Asymmetric key parser 'x509' registered [ 25.040384][ T1] Asymmetric key parser 'pkcs8' registered [ 25.040919][ T1] Key type pkcs7_test registered [ 25.041445][ T1] Asymmetric key parser 'tpm_parser' registered [ 25.045548][ T1] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 244) [ 25.063850][ T1] io scheduler mq-deadline registered [ 25.064945][ T1] io scheduler kyber registered [ 25.083518][ T1] io scheduler bfq registered [ 25.221712][ T1] pl061_gpio 9030000.pl061: PL061 GPIO chip registered [ 25.325517][ T1] pci-host-generic 4010000000.pcie: host bridge /pcie@10000000 ranges: [ 25.328963][ T1] pci-host-generic 4010000000.pcie: IO 0x003eff0000..0x003effffff -> 0x0000000000 [ 25.330888][ T1] pci-host-generic 4010000000.pcie: MEM 0x0010000000..0x003efeffff -> 0x0010000000 [ 25.332241][ T1] pci-host-generic 4010000000.pcie: MEM 0x8000000000..0xffffffffff -> 0x8000000000 [ 25.334855][ T1] pci-host-generic 4010000000.pcie: Memory resource size exceeds max for 32 bits [ 25.355298][ T1] pci-host-generic 4010000000.pcie: ECAM at [mem 0x4010000000-0x401fffffff] for [bus 00-ff] [ 25.374983][ T1] pci-host-generic 4010000000.pcie: PCI host bridge to bus 0000:00 [ 25.379648][ T1] pci_bus 0000:00: root bus resource [bus 00-ff] [ 25.380375][ T1] pci_bus 0000:00: root bus resource [io 0x0000-0xffff] [ 25.380901][ T1] pci_bus 0000:00: root bus resource [mem 0x10000000-0x3efeffff] [ 25.381302][ T1] pci_bus 0000:00: root bus resource [mem 0x8000000000-0xffffffffff] [ 25.388637][ T1] pci 0000:00:00.0: [1b36:0008] type 00 class 0x060000 [ 25.405392][ T1] pci 0000:00:01.0: [1af4:1005] type 00 class 0x00ff00 [ 25.408197][ T1] pci 0000:00:01.0: reg 0x10: [io 0x0000-0x001f] [ 25.409623][ T1] pci 0000:00:01.0: reg 0x20: [mem 0x00000000-0x00003fff 64bit pref] [ 25.424167][ T1] pci 0000:00:02.0: [1af4:1000] type 00 class 0x020000 [ 25.425401][ T1] pci 0000:00:02.0: reg 0x10: [io 0x0000-0x001f] [ 25.428013][ T1] pci 0000:00:02.0: reg 0x14: [mem 0x00000000-0x00000fff] [ 25.428742][ T1] pci 0000:00:02.0: reg 0x20: [mem 0x00000000-0x00003fff 64bit pref] [ 25.429176][ T1] pci 0000:00:02.0: reg 0x30: [mem 0x00000000-0x0003ffff pref] [ 25.440906][ T1] pci 0000:00:03.0: [1af4:1001] type 00 class 0x010000 [ 25.444780][ T1] pci 0000:00:03.0: reg 0x10: [io 0x0000-0x007f] [ 25.445638][ T1] pci 0000:00:03.0: reg 0x14: [mem 0x00000000-0x00000fff] [ 25.460931][ T1] pci 0000:00:03.0: reg 0x20: [mem 0x00000000-0x00003fff 64bit pref] [ 25.483176][ T1] pci 0000:00:02.0: BAR 6: assigned [mem 0x10000000-0x1003ffff pref] [ 25.484458][ T1] pci 0000:00:01.0: BAR 4: assigned [mem 0x8000000000-0x8000003fff 64bit pref] [ 25.488988][ T1] pci 0000:00:02.0: BAR 4: assigned [mem 0x8000004000-0x8000007fff 64bit pref] [ 25.490179][ T1] pci 0000:00:03.0: BAR 4: assigned [mem 0x8000008000-0x800000bfff 64bit pref] [ 25.490937][ T1] pci 0000:00:02.0: BAR 1: assigned [mem 0x10040000-0x10040fff] [ 25.492411][ T1] pci 0000:00:03.0: BAR 1: assigned [mem 0x10041000-0x10041fff] [ 25.493035][ T1] pci 0000:00:03.0: BAR 0: assigned [io 0x1000-0x107f] [ 25.493804][ T1] pci 0000:00:01.0: BAR 0: assigned [io 0x1080-0x109f] [ 25.494320][ T1] pci 0000:00:02.0: BAR 0: assigned [io 0x10a0-0x10bf] [ 25.529108][ T1] usbcore: registered new interface driver udlfb [ 25.593385][ T1] uvesafb: failed to execute /sbin/v86d [ 25.594046][ T1] uvesafb: make sure that the v86d helper is installed and executable [ 25.594818][ T1] uvesafb: Getting VBE info block failed (eax=0x4f00, err=-2) [ 25.595551][ T1] uvesafb: vbe_init() failed with -22 [ 25.598882][ T1] uvesafb: probe of uvesafb.0 failed with error -22 [ 25.604122][ T1] IPMI message handler: version 39.2 [ 25.613039][ T1] ipmi device interface [ 25.618214][ T1] ipmi_si: IPMI System Interface driver [ 25.675739][ T1] ipmi_si: Unable to find any System Interface(s) [ 25.724547][ T1] EINJ: ACPI disabled. [ 26.007412][ T1] virtio-pci 0000:00:01.0: enabling device (0000 -> 0003) [ 26.035832][ T1] virtio-pci 0000:00:02.0: enabling device (0000 -> 0003) [ 26.063171][ T1] virtio-pci 0000:00:03.0: enabling device (0000 -> 0003) [ 32.700578][ T1] N_HDLC line discipline registered with maxframe=4096 [ 32.704956][ T1] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled [ 32.984579][ T1] Cyclades driver 2.6 [ 32.995619][ T1] Initializing Nozomi driver 2.1d [ 33.024081][ T1] RocketPort device driver module, version 2.09, 12-June-2003 [ 33.029245][ T1] No rocketport ports found; unloading driver [ 33.192825][ T1954] random: fast init done [ 33.228846][ T1954] random: crng init done [ 33.330070][ T1] [drm] Initialized vgem 1.0.0 20120112 for vgem on minor 0 [ 33.439834][ T1] [drm] Initialized vkms 1.0.0 20180514 for vkms on minor 1 [ 33.901378][ T1] Console: switching to colour frame buffer device 128x48 [ 33.960055][ T1] platform vkms: [drm] fb0: vkmsdrmfb frame buffer device [ 33.974289][ T1] usbcore: registered new interface driver udl [ 34.175816][ T15] cacheinfo: Unable to detect cache hierarchy for CPU 0 [ 34.914898][ T1] brd: module loaded [ 36.302994][ T1] loop: module loaded [ 37.049419][ C1] ------------[ cut here ]------------ [ 37.050475][ C1] WARNING: CPU: 1 PID: 21 at drivers/gpu/drm/vkms/vkms_crtc.c:21 vkms_vblank_simulate+0x26c/0x2f4 [ 37.051147][ C1] Modules linked in: [ 37.053195][ C1] CPU: 1 PID: 21 Comm: kdevtmpfs Not tainted 5.12.0-rc3-syzkaller-00020-g1df27313f50a #0 [ 37.053965][ C1] Hardware name: linux,dummy-virt (DT) [ 37.054649][ C1] pstate: 20000085 (nzCv daIf -PAN -UAO -TCO BTYPE=--) [ 37.057578][ C1] pc : vkms_vblank_simulate+0x26c/0x2f4 [ 37.058491][ C1] lr : vkms_vblank_simulate+0x90/0x2f4 [ 37.058875][ C1] sp : ffff00006ab5b350 [ 37.059194][ C1] x29: ffff00006ab5b350 x28: ffff000009865e58 [ 37.059806][ C1] x27: dfff800000000000 x26: ffff00006ab46540 [ 37.060312][ C1] x25: 1fffe0000d568cb1 x24: 1fffe0000d568caa [ 37.060848][ C1] x23: ffff000009864d30 x22: 0000000000fe4c00 [ 37.061328][ C1] x21: ffff00006ab46540 x20: ffff000009864e58 [ 37.061857][ C1] x19: ffff000009865e58 x18: ffff00006ab3fb48 [ 37.062348][ C1] x17: 00000000000013e8 x16: 00000000000013ec [ 37.062873][ C1] x15: ffff8000172b6810 x14: 1fffe0000d56b620 [ 37.063419][ C1] x13: 0000000000000001 x12: 0000000000000033 [ 37.063956][ C1] x11: 1fffe0000115811e x10: 0000000000000007 [ 37.064475][ C1] x9 : 1fffe00001158130 x8 : ffff800015e18c00 [ 37.065095][ C1] x7 : 00000000f1f1f1f1 x6 : dfff800000000000 [ 37.065632][ C1] x5 : 7fffffffffffffff x4 : 0000000852f0f730 [ 37.066362][ C1] x3 : 0000000853ef4330 x2 : 0000000852f0f730 [ 37.066901][ C1] x1 : 0000000853ef4330 x0 : 0000000000000002 [ 37.067798][ C1] Call trace: [ 37.068148][ C1] vkms_vblank_simulate+0x26c/0x2f4 [ 37.068517][ C1] __hrtimer_run_queues+0x590/0xe40 [ 37.068879][ C1] hrtimer_interrupt+0x2e0/0x910 [ 37.069231][ C1] arch_timer_handler_phys+0x4c/0x70 [ 37.069606][ C1] handle_percpu_devid_irq+0x19c/0x330 [ 37.069977][ C1] __handle_domain_irq+0x11c/0x1f0 [ 37.070329][ C1] gic_handle_irq+0x5c/0x1b0 [ 37.070667][ C1] el1_irq+0xb4/0x180 [ 37.070976][ C1] dput+0x78/0x870 [ 37.071306][ C1] done_path_create+0x24/0xfc [ 37.071663][ C1] handle_create+0x374/0x3c8 [ 37.072013][ C1] devtmpfsd+0x1b0/0x28c [ 37.072337][ C1] kthread+0x320/0x3bc [ 37.072668][ C1] ret_from_fork+0x10/0x3c [ 37.073495][ C1] Kernel panic - not syncing: panic_on_warn set ... [ 37.074150][ C1] CPU: 1 PID: 21 Comm: kdevtmpfs Not tainted 5.12.0-rc3-syzkaller-00020-g1df27313f50a #0 [ 37.074593][ C1] Hardware name: linux,dummy-virt (DT) [ 37.074956][ C1] Call trace: [ 37.075258][ C1] dump_backtrace+0x0/0x3e0 [ 37.075608][ C1] show_stack+0x18/0x70 [ 37.075925][ C1] dump_stack+0x120/0x1a8 [ 37.076363][ C1] panic+0x31c/0x5c4 [ 37.076759][ C1] __warn+0x198/0x2f0 [ 37.077679][ C1] report_bug+0x154/0x210 [ 37.079284][ C1] bug_handler+0x38/0x90 [ 37.079592][ C1] brk_handler+0x114/0x230 [ 37.079921][ C1] do_debug_exception+0xc4/0x3b0 [ 37.080268][ C1] el1_dbg+0x60/0x80 [ 37.080581][ C1] el1_sync_handler+0x9c/0xd0 [ 37.080913][ C1] el1_sync+0x70/0x100 [ 37.081231][ C1] vkms_vblank_simulate+0x26c/0x2f4 [ 37.081579][ C1] __hrtimer_run_queues+0x590/0xe40 [ 37.081928][ C1] hrtimer_interrupt+0x2e0/0x910 [ 37.082269][ C1] arch_timer_handler_phys+0x4c/0x70 [ 37.082613][ C1] handle_percpu_devid_irq+0x19c/0x330 [ 37.082944][ C1] __handle_domain_irq+0x11c/0x1f0 [ 37.083292][ C1] gic_handle_irq+0x5c/0x1b0 [ 37.083647][ C1] el1_irq+0xb4/0x180 [ 37.083966][ C1] dput+0x78/0x870 [ 37.084268][ C1] done_path_create+0x24/0xfc [ 37.084609][ C1] handle_create+0x374/0x3c8 [ 37.084912][ C1] devtmpfsd+0x1b0/0x28c [ 37.085222][ C1] kthread+0x320/0x3bc [ 37.085516][ C1] ret_from_fork+0x10/0x3c [ 37.087111][ C1] SMP: stopping secondary CPUs [ 37.091351][ C1] Dumping ftrace buffer: [ 37.094480][ C1] (ftrace buffer empty) [ 37.097016][ C1] Kernel Offset: disabled [ 37.098881][ C1] CPU features: 0x00240022,61002082 [ 37.100679][ C1] Memory Limit: none [ 37.103346][ C1] Rebooting in 1 seconds..