failed to run ["ssh" "-p" "57789" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "IdentitiesOnly=yes" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "root@localhost" "pwd"]: exit status 255 Connection timed out during banner exchange Connection to 127.0.0.1 port 57789 timed out ftruncate: Invalid argument qemu-system-x86_64: warning: hub 0 is not connected to host network [ 0.000000][ T0] Linux version syzkaller (syzkaller@syzkaller) (Debian clang version 22.1.6 (++20260514074242+fc4aad7b5db3-1~exp1~20260514074407.73), Debian LLD 22.1.6) #0 SMP PREEMPT_DYNAMIC now [ 0.000000][ T0] Command line: root=/dev/sda console=ttyS0 root=/dev/sda1 loop.max_loop=1 dummy_hcd.num=1 netrom.nr_ndevs=1 rose.rose_ndevs=1 [ 0.000000][ T0] KERNEL supported cpus: [ 0.000000][ T0] Intel GenuineIntel [ 0.000000][ T0] AMD AuthenticAMD [ 0.000000][ T0] BIOS-provided physical RAM map: [ 0.000000][ T0] BIOS-e820: [mem 0x0000000000000000-0x000000000009fbff] System RAM [ 0.000000][ T0] BIOS-e820: [mem 0x000000000009fc00-0x000000000009ffff] device reserved [ 0.000000][ T0] BIOS-e820: [gap 0x00000000000a0000-0x00000000000effff] [ 0.000000][ T0] BIOS-e820: [mem 0x00000000000f0000-0x00000000000fffff] device reserved [ 0.000000][ T0] BIOS-e820: [mem 0x0000000000100000-0x000000005ffdcfff] System RAM [ 0.000000][ T0] BIOS-e820: [mem 0x000000005ffdd000-0x000000005fffffff] device reserved [ 0.000000][ T0] BIOS-e820: [gap 0x0000000060000000-0x00000000afffffff] [ 0.000000][ T0] BIOS-e820: [mem 0x00000000b0000000-0x00000000bfffffff] device reserved [ 0.000000][ T0] BIOS-e820: [gap 0x00000000c0000000-0x00000000fed1bfff] [ 0.000000][ T0] BIOS-e820: [mem 0x00000000fed1c000-0x00000000fed1ffff] device reserved [ 0.000000][ T0] BIOS-e820: [gap 0x00000000fed20000-0x00000000feffbfff] [ 0.000000][ T0] BIOS-e820: [mem 0x00000000feffc000-0x00000000feffffff] device reserved [ 0.000000][ T0] BIOS-e820: [gap 0x00000000ff000000-0x00000000fffbffff] [ 0.000000][ T0] BIOS-e820: [mem 0x00000000fffc0000-0x00000000ffffffff] device reserved [ 0.000000][ T0] printk: legacy bootconsole [earlyser0] enabled [ 0.000000][ T0] ERROR: earlyprintk= earlyser already used [ 0.000000][ T0] ERROR: earlyprintk= earlyser already used [ 0.000000][ T0] Hash pointers mode set to never. [ 0.000000][ T0] Malformed early option 'vsyscall' [ 0.000000][ T0] nopcid: PCID feature disabled [ 0.000000][ T0] NX (Execute Disable) protection: active [ 0.000000][ T0] APIC: Static calls initialized [ 0.000000][ T0] DMI: SMBIOS 2.8 present. [ 0.000000][ T0] DMI: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 0.000000][ T0] DMI: Memory slots populated: 1/1 [ 0.000000][ T0] Hypervisor detected: KVM [ 0.000000][ T0] last_pfn = 0x5ffdd max_arch_pfn = 0x400000000 [ 0.000000][ T0] kvm-clock: Using msrs 4b564d01 and 4b564d00 [ 0.000006][ T0] kvm-clock: using sched offset of 2306757043 cycles [ 0.004992][ T0] clocksource: kvm-clock: mask: 0xffffffffffffffff max_cycles: 0x1cd42e4dffb, max_idle_ns: 881590591483 ns [ 0.027288][ T0] last_pfn = 0x5ffdd max_arch_pfn = 0x400000000 [ 0.032891][ T0] MTRR map: 4 entries (3 fixed + 1 variable; max 19), built from 8 variable MTRRs [ 0.041218][ T0] x86/PAT: Configuration [0-7]: WB WC UC- UC WB WP UC- WT [ 0.053886][ T0] found SMP MP-table at [mem 0x000f5430-0x000f543f] [ 0.059325][ T0] Using GB pages for direct mapping [ 0.065598][ T0] ACPI: Early table checksum verification disabled [ 0.070646][ T0] ACPI: RSDP 0x00000000000F5270 000014 (v00 BOCHS ) [ 0.076782][ T0] ACPI: RSDT 0x000000005FFE25D7 000048 (v01 BOCHS BXPC 00000001 BXPC 00000001) [ 0.084626][ T0] ACPI: FACP 0x000000005FFE189E 0000F4 (v03 BOCHS BXPC 00000001 BXPC 00000001) [ 0.092571][ T0] ACPI: DSDT 0x000000005FFDF040 00285E (v01 BOCHS BXPC 00000001 BXPC 00000001) [ 0.100268][ T0] ACPI: FACS 0x000000005FFDF000 000040 [ 0.104984][ T0] ACPI: APIC 0x000000005FFE1992 000078 (v03 BOCHS BXPC 00000001 BXPC 00000001) [ 0.112452][ T0] ACPI: HPET 0x000000005FFE1A0A 000038 (v01 BOCHS BXPC 00000001 BXPC 00000001) [ 0.120720][ T0] ACPI: SRAT 0x000000005FFE1A42 0000E0 (v01 BOCHS BXPC 00000001 BXPC 00000001) [ 0.127865][ T0] ACPI: MCFG 0x000000005FFE1B22 00003C (v01 BOCHS BXPC 00000001 BXPC 00000001) [ 0.135667][ T0] ACPI: DMAR 0x000000005FFE1B5E 0000D0 (v01 BOCHS BXPC 00000001 BXPC 00000001) [ 0.143208][ T0] ACPI: SSDT 0x000000005FFE1C2E 0008A1 (v01 BOCHS NVDIMM 00000001 BXPC 00000001) [ 0.151264][ T0] ACPI: NFIT 0x000000005FFE24CF 0000E0 (v01 BOCHS BXPC 00000001 BXPC 00000001) [ 0.159484][ T0] ACPI: WAET 0x000000005FFE25AF 000028 (v01 BOCHS BXPC 00000001 BXPC 00000001) [ 0.167050][ T0] ACPI: Reserving FACP table memory at [mem 0x5ffe189e-0x5ffe1991] [ 0.173877][ T0] ACPI: Reserving DSDT table memory at [mem 0x5ffdf040-0x5ffe189d] [ 0.180269][ T0] ACPI: Reserving FACS table memory at [mem 0x5ffdf000-0x5ffdf03f] [ 0.187108][ T0] ACPI: Reserving APIC table memory at [mem 0x5ffe1992-0x5ffe1a09] [ 0.193702][ T0] ACPI: Reserving HPET table memory at [mem 0x5ffe1a0a-0x5ffe1a41] [ 0.199698][ T0] ACPI: Reserving SRAT table memory at [mem 0x5ffe1a42-0x5ffe1b21] [ 0.205971][ T0] ACPI: Reserving MCFG table memory at [mem 0x5ffe1b22-0x5ffe1b5d] [ 0.212749][ T0] ACPI: Reserving DMAR table memory at [mem 0x5ffe1b5e-0x5ffe1c2d] [ 0.218881][ T0] ACPI: Reserving SSDT table memory at [mem 0x5ffe1c2e-0x5ffe24ce] [ 0.225212][ T0] ACPI: Reserving NFIT table memory at [mem 0x5ffe24cf-0x5ffe25ae] [ 0.231922][ T0] ACPI: Reserving WAET table memory at [mem 0x5ffe25af-0x5ffe25d6] [ 0.238885][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x00000000-0x0009ffff] [ 0.244600][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x00100000-0x5fffffff] [ 0.250162][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x100000000-0x103ffffff] non-volatile [ 0.256926][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x100000000-0x59fffffff] hotplug [ 0.263716][ T0] NUMA: Node 0 [mem 0x00001000-0x0009ffff] + [mem 0x00100000-0x5ffdcfff] -> [mem 0x00001000-0x5ffdcfff] [ 0.272839][ T0] Faking node 0 at [mem 0x0000000000001000-0x0000000030000fff] (768MB) [ 0.279496][ T0] Faking node 1 at [mem 0x0000000030001000-0x000000005ffdcfff] (767MB) [ 0.286449][ T0] NODE_DATA(0) allocated [mem 0x2fffb100-0x30000fff] [ 0.293611][ T0] NODE_DATA(1) allocated [mem 0x5ffd6100-0x5ffdbfff] [ 0.415786][ T0] KernelAddressSanitizer initialized (generic) [ 0.428197][ T0] ACPI: PM-Timer IO Port: 0x608 [ 0.432425][ T0] ACPI: LAPIC_NMI (acpi_id[0xff] dfl dfl lint[0x1]) [ 0.438432][ T0] IOAPIC[0]: apic_id 0, version 32, address 0xfec00000, GSI 0-23 [ 0.444832][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl) [ 0.450759][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 high level) [ 0.456672][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level) [ 0.462317][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 high level) [ 0.468599][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 high level) [ 0.474720][ T0] ACPI: Using ACPI (MADT) for SMP configuration information [ 0.480591][ T0] ACPI: HPET id: 0x8086a201 base: 0xfed00000 [ 0.485550][ T0] TSC deadline timer available [ 0.489371][ T0] CPU topo: Max. logical packages: 1 [ 0.493832][ T0] CPU topo: Max. logical nodes: 1 [ 0.497970][ T0] CPU topo: Num. nodes per package: 1 [ 0.502249][ T0] CPU topo: Max. logical dies: 1 [ 0.506719][ T0] CPU topo: Max. dies per package: 1 [ 0.511101][ T0] CPU topo: Max. threads per core: 1 [ 0.515807][ T0] CPU topo: Num. cores per package: 1 [ 0.520528][ T0] CPU topo: Num. threads per package: 1 [ 0.524821][ T0] CPU topo: Allowing 1 present CPUs plus 0 hotplug CPUs [ 0.530280][ T0] kvm-guest: APIC: eoi() replaced with kvm_guest_apic_eoi_write() [ 0.536830][ T0] PM: hibernation: Registered nosave memory: [mem 0x00000000-0x00000fff] [ 0.543750][ T0] PM: hibernation: Registered nosave memory: [mem 0x0009f000-0x000fffff] [ 0.550287][ T0] [gap 0x60000000-0xafffffff] available for PCI devices [ 0.555939][ T0] Booting paravirtualized kernel on KVM [ 0.559911][ T0] clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns [ 0.657272][ T0] Zone ranges: [ 0.660125][ T0] DMA [mem 0x0000000000001000-0x0000000000ffffff] [ 0.666155][ T0] DMA32 [mem 0x0000000001000000-0x000000005ffdcfff] [ 0.671845][ T0] Normal empty [ 0.674852][ T0] Device empty [ 0.677752][ T0] Movable zone start for each node [ 0.681686][ T0] Early memory node ranges [ 0.684851][ T0] node 0: [mem 0x0000000000001000-0x000000000009efff] [ 0.689841][ T0] node 0: [mem 0x0000000000100000-0x0000000030000fff] [ 0.695574][ T0] node 1: [mem 0x0000000030001000-0x000000005ffdcfff] [ 0.701192][ T0] Initmem setup node 0 [mem 0x0000000000001000-0x0000000030000fff] [ 0.707566][ T0] Initmem setup node 1 [mem 0x0000000030001000-0x000000005ffdcfff] [ 0.713896][ T0] On node 0, zone DMA: 1 pages in unavailable ranges [ 0.719735][ T0] On node 0, zone DMA: 97 pages in unavailable ranges [ 0.747021][ T0] On node 1, zone DMA32: 35 pages in unavailable ranges [ 0.752811][ T0] setup_percpu: NR_CPUS:8 nr_cpumask_bits:1 nr_cpu_ids:1 nr_node_ids:2 [ 0.760163][ T0] percpu: Embedded 71 pages/cpu s250952 r8192 d31672 u2097152 [ 0.766206][ T0] kvm-guest: PV spinlocks disabled, single CPU [ 0.771086][ T0] Kernel command line: 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 rcupdate.rcu_cpu_stall_cputime=1 no_hash_pointers page_owner=on sysctl.vm.nr_hugepages=4 sysctl.vm.nr_overcommit_hugepages=4 secretmem.enable=1 sysctl.max_rcu_stall_to_panic=1 msr.allow_writes=off coredump_filter=0xffff root=/dev/sda console=ttyS0 vsyscall=native numa=fake=2 kvm-intel.nested=1 spec_store_bypass_disable=prctl nopcid vivid.n_devs=64 vivid.multiplanar=1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2 netrom.nr_ndevs=32 rose.rose_ndevs=32 smp.csd_lock_timeout=100000 watchdog_thresh=55 workqueue.watchdog_thresh=140 sysctl.net.core.netdev_unregister_timeout_secs=140 dummy_hcd.num=32 max_loop=32 nbds_max=32 \ [ 0.846128][ T0] Kernel command line: comedi.comedi_num_legacy_minors=4 panic_on_warn=1 root=/dev/sda console=ttyS0 root=/dev/sda1 loop.max_loop=1 dummy_hcd.num=1 netrom.nr_ndevs=1 rose.rose_ndevs=1 [ 0.864711][ T0] Unknown kernel command line parameters "nbds_max=32", will be passed to user space. [ 0.872439][ T0] random: crng init done [ 0.875722][ T0] printk: log buffer data + meta data: 262144 + 917504 = 1179648 bytes [ 0.882627][ T0] software IO TLB: area num 1. [ 0.939790][ T0] Fallback order for Node 0: 0 1 [ 0.939819][ T0] Fallback order for Node 1: 1 0 [ 0.939833][ T0] Built 2 zonelists, mobility grouping on. Total pages: 393083 [ 0.951043][ T0] Policy zone: DMA32 [ 0.954854][ T0] mem auto-init: stack:all(zero), heap alloc:on, heap free:off [ 0.959934][ T0] stackdepot: allocating hash table via alloc_large_system_hash [ 0.964555][ T0] stackdepot hash table entries: 1048576 (order: 12, 16777216 bytes, linear) [ 0.978330][ T0] stackdepot: allocating space for 8192 stack pools via memblock [ 1.083122][ T0] ********************************************************** [ 1.087939][ T0] ** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE ** [ 1.092863][ T0] ** ** [ 1.097980][ T0] ** This system shows unhashed kernel memory addresses ** [ 1.103311][ T0] ** via the console, logs, and other interfaces. This ** [ 1.108190][ T0] ** might reduce the security of your system. ** [ 1.113125][ T0] ** ** [ 1.118089][ T0] ** If you see this message and you are not debugging ** [ 1.122786][ T0] ** the kernel, report this immediately to your system ** [ 1.127822][ T0] ** administrator! ** [ 1.132587][ T0] ** ** [ 1.136949][ T0] ** Use hash_pointers=always to force this mode off ** [ 1.141594][ T0] ** ** [ 1.146419][ T0] ** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE ** [ 1.151422][ T0] ********************************************************** [ 1.159305][ T0] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=2 [ 1.194252][ T0] allocated 31457280 bytes of page_ext [ 1.197911][ T0] Node 0, zone DMA: page owner found early allocated 0 pages [ 1.208207][ T0] Node 0, zone DMA32: page owner found early allocated 4596 pages [ 1.215229][ T0] Node 1, zone DMA32: page owner found early allocated 3207 pages [ 1.221731][ T0] Dynamic Preempt: full [ 1.225952][ T0] Running RCU self tests [ 1.228456][ T0] Running RCU synchronous self tests [ 1.231764][ T0] rcu: Preemptible hierarchical RCU implementation. [ 1.235981][ T0] rcu: RCU lockdep checking is enabled. [ 1.239765][ T0] rcu: RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=1. [ 1.244370][ T0] rcu: RCU callback double-/use-after-free debug is enabled. [ 1.248634][ T0] rcu: RCU debug extended QS entry/exit. [ 1.252149][ T0] All grace periods are expedited (rcu_expedited). [ 1.256215][ T0] Trampoline variant of Tasks RCU enabled. [ 1.259871][ T0] Tracing variant of Tasks RCU enabled. [ 1.263413][ T0] rcu: RCU calculated value of scheduler-enlistment delay is 10 jiffies. [ 1.268382][ T0] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=1 [ 1.273252][ T0] Running RCU synchronous self tests [ 1.276818][ T0] RCU Tasks: Setting shift to 0 and lim to 1 rcu_task_cb_adjust=1 rcu_task_cpu_ids=1. [ 1.415878][ T0] NR_IRQS: 4352, nr_irqs: 256, preallocated irqs: 16 [ 1.421562][ T0] rcu: srcu_init: Setting srcu_struct sizes based on contention. [ 1.426723][ T0] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns [ 1.434155][ T0] [ 1.435648][ T0] ============================= [ 1.438822][ T0] [ BUG: Invalid wait context ] [ 1.442244][ T0] syzkaller #0 Not tainted [ 1.445396][ T0] ----------------------------- [ 1.448617][ T0] swapper/0/0 is trying to lock: [ 1.452091][ T0] ffffffff8e988980 (clocksource_mutex){....}-{4:4}, at: __clocksource_register_scale+0x921/0xff0 [ 1.459849][ T0] other info that might help us debug this: [ 1.464352][ T0] context-{5:5} [ 1.467056][ T0] 1 lock held by swapper/0/0: [ 1.470333][ T0] #0: ffffffff9a493970 (&tkd->lock){....}-{2:2}, at: timekeeping_init+0x227/0x390 [ 1.477022][ T0] stack backtrace: [ 1.479857][ T0] CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT(full) [ 1.479871][ T0] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 1.479880][ T0] Call Trace: [ 1.479887][ T0] [ 1.479894][ T0] dump_stack_lvl+0xe8/0x150 [ 1.479910][ T0] __lock_acquire+0xe39/0x2cf0 [ 1.479933][ T0] ? __pfx_up+0x10/0x10 [ 1.479953][ T0] ? prb_read_valid+0x3c/0x60 [ 1.479966][ T0] ? __clocksource_register_scale+0x921/0xff0 [ 1.479983][ T0] lock_acquire+0x106/0x350 [ 1.479999][ T0] ? __clocksource_register_scale+0x921/0xff0 [ 1.480015][ T0] ? _printk+0xdd/0x130 [ 1.480031][ T0] ? __might_resched+0x71/0x4d0 [ 1.480051][ T0] __mutex_lock+0x19d/0x1550 [ 1.480065][ T0] ? __clocksource_register_scale+0x921/0xff0 [ 1.480080][ T0] ? __pfx_vprintk_emit+0x10/0x10 [ 1.480096][ T0] ? __clocksource_register_scale+0x921/0xff0 [ 1.480110][ T0] ? __pfx___mutex_lock+0x10/0x10 [ 1.480128][ T0] ? __native_queued_spin_unlock+0xd/0x50 [ 1.480145][ T0] ? __raw_callee_save___native_queued_spin_unlock+0x15/0x40 [ 1.480165][ T0] ? clocksource_arch_init+0x86/0x110 [ 1.480178][ T0] __clocksource_register_scale+0x921/0xff0 [ 1.480195][ T0] ? __hrtimer_setup+0x1b7/0x260 [ 1.480210][ T0] clocksource_default_clock+0x20/0x40 [ 1.480231][ T0] timekeeping_init+0x236/0x390 [ 1.480249][ T0] ? __pfx_timekeeping_init+0x10/0x10 [ 1.480268][ T0] ? __split_page_owner+0x2d/0x300 [ 1.480282][ T0] ? __split_page_owner+0x2d/0x300 [ 1.480296][ T0] ? vdso_setup_data_pages+0xa3/0x130 [ 1.480314][ T0] ? __asan_memcpy+0x40/0x70 [ 1.480328][ T0] start_kernel+0x1d3/0x3e0 [ 1.480346][ T0] x86_64_start_reservations+0x24/0x30 [ 1.480360][ T0] x86_64_start_kernel+0x137/0x1b0 [ 1.480373][ T0] common_startup_64+0x13e/0x157 [ 1.480392][ T0] [ 1.480883][ T0] kfence: initialized - using 2097152 bytes for 255 objects at 0xffff88805b200000-0xffff88805b400000 [ 1.657388][ T0] Console: colour VGA+ 80x25 [ 1.661388][ T0] printk: legacy console [ttyS0] enabled [ 1.661388][ T0] printk: legacy console [ttyS0] enabled [ 1.669711][ T0] printk: legacy bootconsole [earlyser0] disabled [ 1.669711][ T0] printk: legacy bootconsole [earlyser0] disabled [ 1.679495][ T0] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar [ 1.686101][ T0] ... MAX_LOCKDEP_SUBCLASSES: 8 [ 1.689783][ T0] ... MAX_LOCK_DEPTH: 48 [ 1.693452][ T0] ... MAX_LOCKDEP_KEYS: 8192 [ 1.697552][ T0] ... CLASSHASH_SIZE: 4096 [ 1.701533][ T0] ... MAX_LOCKDEP_ENTRIES: 1048576 [ 1.705524][ T0] ... MAX_LOCKDEP_CHAINS: 1048576 [ 1.709699][ T0] ... CHAINHASH_SIZE: 524288 [ 1.713863][ T0] memory used by lock dependency info: 106625 kB [ 1.718622][ T0] memory used for stack traces: 8320 kB [ 1.722851][ T0] per task-struct memory footprint: 1920 bytes [ 1.727677][ T0] mempolicy: Enabling automatic NUMA balancing. Configure with numa_balancing= or the kernel.numa_balancing sysctl [ 1.738025][ T0] ACPI: Core revision 20260408 [ 1.744157][ T0] clocksource: hpet: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604467 ns [ 1.752355][ T0] APIC: Switch to symmetric I/O mode setup [ 1.756744][ T0] DMAR: Host address width 48 [ 1.760282][ T0] DMAR: DRHD base: 0x000000fed90000 flags: 0x0 [ 1.765420][ T0] DMAR: dmar0: reg_base_addr fed90000 ver 1:0 cap d2008c222f0606 ecap f00f5e [ 1.771968][ T0] DMAR: ATSR flags: 0x1 [ 1.775372][ T0] DMAR-IR: IOAPIC id 0 under DRHD base 0xfed90000 IOMMU 0 [ 1.780572][ T0] DMAR-IR: Queued invalidation will be enabled to support x2apic and Intr-remapping. [ 1.791975][ T0] DMAR-IR: Enabled IRQ remapping in x2apic mode [ 1.796670][ T0] x2apic enabled [ 1.799782][ T0] APIC: Switched APIC routing to: cluster x2apic [ 1.819713][ T0] ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1 [ 1.824800][ T0] Calibrating delay loop (skipped) preset value.. 5599.99 BogoMIPS (lpj=27999980) [ 1.835053][ T0] x86/cpu: User Mode Instruction Prevention (UMIP) activated [ 1.840715][ T0] numa_add_cpu cpu 0 node 0: mask now 0 [ 1.844391][ T0] numa_add_cpu cpu 0 node 1: mask now 0 [ 1.844807][ T0] Last level iTLB entries: 4KB 0, 2MB 0, 4MB 0 [ 1.848787][ T0] Last level dTLB entries: 4KB 0, 2MB 0, 4MB 0, 1GB 0 [ 1.854912][ T0] mitigations: Enabled attack vectors: user_kernel, user_user, guest_host, guest_guest, SMT mitigations: auto [ 1.864793][ T0] Speculative Store Bypass: Mitigation: Speculative Store Bypass disabled via prctl [ 1.871342][ T0] Spectre V2 : Mitigation: Enhanced / Automatic IBRS [ 1.874796][ T0] RETBleed: Mitigation: Enhanced IBRS [ 1.878387][ T0] ITS: Mitigation: Aligned branch/return thunks [ 1.882280][ T0] TAA: Vulnerable: Clear CPU buffers attempted, no microcode [ 1.884794][ T0] MMIO Stale Data: Vulnerable: Clear CPU buffers attempted, no microcode [ 1.890608][ T0] Spectre V1 : Mitigation: usercopy/swapgs barriers and __user pointer sanitization [ 1.894793][ T0] Spectre V2 : WARNING: Unprivileged eBPF is enabled with eIBRS on, data leaks possible via Spectre v2 BHB attacks! [ 1.904807][ T0] Spectre V2 : Spectre v2 / PBRSB-eIBRS: Retire a single CALL on VMEXIT [ 1.910002][ T0] Spectre V2 : mitigation: Enabling conditional Indirect Branch Prediction Barrier [ 1.914818][ T0] active return thunk: its_return_thunk [ 1.918586][ T0] Spectre V2 : Spectre BHI mitigation: SW BHB clearing on syscall and VM exit [ 1.925003][ T0] x86/fpu: Supporting XSAVE feature 0x001: 'x87 floating point registers' [ 1.934790][ T0] x86/fpu: Supporting XSAVE feature 0x002: 'SSE registers' [ 1.938943][ T0] x86/fpu: Supporting XSAVE feature 0x004: 'AVX registers' [ 1.943423][ T0] x86/fpu: Supporting XSAVE feature 0x020: 'AVX-512 opmask' [ 1.944790][ T0] x86/fpu: Supporting XSAVE feature 0x040: 'AVX-512 Hi256' [ 1.949128][ T0] x86/fpu: Supporting XSAVE feature 0x080: 'AVX-512 ZMM_Hi256' [ 1.954793][ T0] x86/fpu: xstate_offset[2]: 576, xstate_sizes[2]: 256 [ 1.959316][ T0] x86/fpu: xstate_offset[5]: 832, xstate_sizes[5]: 64 [ 1.964790][ T0] x86/fpu: xstate_offset[6]: 896, xstate_sizes[6]: 512 [ 1.969229][ T0] x86/fpu: xstate_offset[7]: 1408, xstate_sizes[7]: 1024 [ 1.974791][ T0] x86/fpu: Enabled xstate features 0xe7, context size is 2432 bytes, using 'compacted' format. [ 2.254727][ T0] pid_max: default: 32768 minimum: 301 [ 2.255522][ T0] landlock: Up and running. [ 2.258385][ T0] Yama: becoming mindful. [ 2.265023][ T0] TOMOYO Linux initialized [ 2.267916][ T0] AppArmor: AppArmor initialized [ 2.271438][ T0] LSM support for eBPF active [ 2.275445][ T0] Dentry cache hash table entries: 131072 (order: 8, 1048576 bytes, vmalloc) [ 2.281344][ T0] Inode-cache hash table entries: 65536 (order: 7, 524288 bytes, vmalloc) [ 2.284961][ T0] Mount-cache hash table entries: 2048 (order: 2, 16384 bytes, vmalloc) [ 2.289779][ T0] Mountpoint-cache hash table entries: 2048 (order: 2, 16384 bytes, vmalloc) [ 2.295597][ T0] VFS: Finished mounting rootfs on nullfs [ 2.301017][ T0] Running RCU synchronous self tests [ 2.304794][ T0] Running RCU synchronous self tests [ 2.425161][ T1] smpboot: CPU0: Intel(R) Xeon(R) CPU @ 2.80GHz (family: 0x6, model: 0x55, stepping: 0x7) [ 2.433716][ T1] Performance Events: unsupported CPU family 6 model 85 no PMU driver, software events only. [ 2.435014][ T1] signal: max sigframe size: 3632 [ 2.438364][ T1] rcu: Hierarchical SRCU implementation. [ 2.444790][ T1] rcu: Max phase no-delay instances is 1000. [ 2.480837][ T1] smp: Bringing up secondary CPUs ... [ 2.484270][ T1] smp: Brought up 2 nodes, 1 CPU [ 2.484812][ T1] smpboot: Total of 1 processors activated (5599.99 BogoMIPS) [ 2.489896][ T1] Memory: 750448K/1572332K available (174785K kernel code, 29902K rwdata, 41340K rodata, 26600K init, 120584K bss, 779348K reserved, 0K cma-reserved) [ 2.495650][ T1] devtmpfs: initialized [ 2.505053][ T1] x86/mm: Memory block size: 128MB [ 2.524463][ T1] Running RCU synchronous self tests [ 2.524826][ T1] Running RCU synchronous self tests [ 2.528434][ T1] Running RCU Tasks wait API self tests [ 2.644873][ T1] Running RCU Tasks Trace wait API self tests [ 2.654430][ T1] posixtimers hash table entries: 512 (order: 4, 36864 bytes, vmalloc) [ 2.654845][ T1] futex hash table entries: 128 (16384 bytes on 2 NUMA nodes, total 32 KiB, linear). [ 2.665548][ T1] xor: automatically using best checksumming function avx [ 2.672556][ T1] PM: RTC time: 10:38:59, date: 2026-06-16 [ 2.679645][ T1] NET: Registered PF_NETLINK/PF_ROUTE protocol family [ 2.684821][ T10] Callback from call_rcu_tasks_trace() invoked. [ 2.691555][ T1] audit: initializing netlink subsys (disabled) [ 2.695076][ T24] audit: type=2000 audit(1781606339.011:1): state=initialized audit_enabled=0 res=1 [ 2.700909][ T1] thermal_sys: Registered thermal governor 'step_wise' [ 2.700991][ T1] cpuidle: using governor menu [ 2.707220][ T1] NET: Registered PF_QIPCRTR protocol family [ 2.712590][ T1] Freeing SMP alternatives memory: 136K [ 2.715678][ T1] dca service started, version 1.12.1 [ 2.718588][ T1] PCI: ECAM [mem 0xb0000000-0xbfffffff] (base 0xb0000000) for domain 0000 [bus 00-ff] [ 2.723058][ T1] PCI: ECAM [mem 0xb0000000-0xbfffffff] reserved as E820 entry [ 2.771062][ T1] PCI: Using configuration type 1 for base access [ 2.785850][ T1] HugeTLB: registered 1.00 GiB page size, pre-allocated 0 pages [ 2.789731][ T1] HugeTLB: 16380 KiB vmemmap can be freed for a 1.00 GiB page [ 2.793332][ T1] HugeTLB: registered 2.00 MiB page size, pre-allocated 0 pages [ 2.804814][ T1] HugeTLB: 28 KiB vmemmap can be freed for a 2.00 MiB page [ 2.825925][ T1] raid6: skipped pq benchmark and selected avx512x4 [ 2.829504][ T1] raid6: using avx512x2 recovery algorithm [ 2.833653][ T1] ACPI: Added _OSI(Module Device) [ 2.844801][ T1] ACPI: Added _OSI(Processor Device) [ 2.847630][ T1] ACPI: Added _OSI(Processor Aggregator Device) [ 2.884896][ T23] Callback from call_rcu_tasks() invoked. [ 2.987426][ T1] ACPI: 2 ACPI AML tables successfully acquired and loaded [ 3.013384][ T1] ACPI: \_SB_: platform _OSC: OS support mask [000e7eee] [ 3.033824][ T1] ACPI: Interpreter enabled [ 3.045132][ T1] ACPI: PM: (supports S0 S3 S4 S5) [ 3.048103][ T1] ACPI: Using IOAPIC for interrupt routing [ 3.052316][ T1] PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug [ 3.064799][ T1] PCI: Using E820 reservations for host bridge windows [ 3.073945][ T1] ACPI: Enabled 4 GPEs in block 00 to 3F [ 3.408950][ T1] ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-ff]) [ 3.413263][ T1] acpi PNP0A08:00: _OSC: OS supports [ExtendedConfig ASPM ClockPM Segments MSI HPX-Type3] [ 3.427699][ T1] acpi PNP0A08:00: _OSC: platform does not support [PCIeHotplug LTR] [ 3.448130][ T1] acpi PNP0A08:00: _OSC: OS now controls [PME AER PCIeCapability] [ 3.454572][ T1] PCI host bridge to bus 0000:00 [ 3.464800][ T1] pci_bus 0000:00: Unknown NUMA node; performance will be reduced [ 3.469510][ T1] pci_bus 0000:00: root bus resource [io 0x0000-0x0cf7 window] [ 3.474107][ T1] pci_bus 0000:00: root bus resource [io 0x0d00-0xffff window] [ 3.484936][ T1] pci_bus 0000:00: root bus resource [mem 0x000a0000-0x000bffff window] [ 3.489988][ T1] pci_bus 0000:00: root bus resource [mem 0x60000000-0xafffffff window] [ 3.504824][ T1] pci_bus 0000:00: root bus resource [mem 0xc0000000-0xfebfffff window] [ 3.510028][ T1] pci_bus 0000:00: root bus resource [mem 0x5c0000000-0xdbfffffff window] [ 3.524828][ T1] pci_bus 0000:00: root bus resource [bus 00-ff] [ 3.528907][ T1] pci 0000:00:00.0: [8086:29c0] type 00 class 0x060000 conventional PCI endpoint [ 3.550523][ T1] pci 0000:00:01.0: [1af4:1050] type 00 class 0x030000 conventional PCI endpoint [ 3.572079][ T1] pci 0000:00:01.0: BAR 0 [mem 0xfc000000-0xfc7fffff pref] [ 3.584997][ T1] pci 0000:00:01.0: BAR 2 [mem 0xfca00000-0xfca03fff 64bit pref] [ 3.589861][ T1] pci 0000:00:01.0: BAR 4 [mem 0xfeaf4000-0xfeaf4fff] [ 3.594066][ T1] pci 0000:00:01.0: ROM [mem 0xfeae0000-0xfeaeffff pref] [ 3.605786][ T1] pci 0000:00:01.0: Video device with shadowed ROM at [mem 0x000c0000-0x000dffff] [ 3.628368][ T1] pci 0000:00:02.0: [8086:10d3] type 00 class 0x020000 PCIe Root Complex Integrated Endpoint [ 3.650972][ T1] pci 0000:00:02.0: BAR 0 [mem 0xfea80000-0xfea9ffff] [ 3.664868][ T1] pci 0000:00:02.0: BAR 1 [mem 0xfeaa0000-0xfeabffff] [ 3.669215][ T1] pci 0000:00:02.0: BAR 2 [io 0xc080-0xc09f] [ 3.672945][ T1] pci 0000:00:02.0: BAR 3 [mem 0xfeaf0000-0xfeaf3fff] [ 3.684950][ T1] pci 0000:00:02.0: ROM [mem 0xfea00000-0xfea3ffff pref] [ 3.689592][ T1] pci 0000:00:02.0: enabling Extended Tags [ 3.711481][ T1] pci 0000:00:03.0: [1af4:1005] type 00 class 0x00ff00 conventional PCI endpoint [ 3.730712][ T1] pci 0000:00:03.0: BAR 0 [io 0xc0a0-0xc0bf] [ 3.734447][ T1] pci 0000:00:03.0: BAR 1 [mem 0xfeaf5000-0xfeaf5fff] [ 3.745037][ T1] pci 0000:00:03.0: BAR 4 [mem 0xfca04000-0xfca07fff 64bit pref] [ 3.767170][ T1] pci 0000:00:04.0: [8086:3420] type 01 class 0x060400 PCIe Root Port [ 3.786080][ T1] pci 0000:00:04.0: PCI bridge to [bus 01] [ 3.789757][ T1] pci 0000:00:04.0: bridge window [mem 0xfe800000-0xfe9fffff] [ 3.806617][ T1] pci 0000:00:04.0: bridge window [mem 0xfc800000-0xfc9fffff 64bit pref] [ 3.812913][ T1] pci 0000:00:04.0: enabling Extended Tags [ 3.831586][ T1] pci 0000:00:05.0: [1af4:1009] type 00 class 0x000200 conventional PCI endpoint [ 3.850473][ T1] pci 0000:00:05.0: BAR 0 [io 0xc0c0-0xc0df] [ 3.854397][ T1] pci 0000:00:05.0: BAR 1 [mem 0xfeaf6000-0xfeaf6fff] [ 3.865008][ T1] pci 0000:00:05.0: BAR 4 [mem 0xfca08000-0xfca0bfff 64bit pref] [ 3.887871][ T1] pci 0000:00:06.0: [8086:100e] type 00 class 0x020000 conventional PCI endpoint [ 3.907748][ T1] pci 0000:00:06.0: BAR 0 [mem 0xfeac0000-0xfeadffff] [ 3.912366][ T1] pci 0000:00:06.0: BAR 1 [io 0xc000-0xc03f] [ 3.925064][ T1] pci 0000:00:06.0: ROM [mem 0xfea40000-0xfea7ffff pref] [ 3.933243][ T1] pci 0000:00:07.0: [1af4:1110] type 00 class 0x050000 conventional PCI endpoint [ 3.952061][ T1] pci 0000:00:07.0: BAR 0 [mem 0xfeaf7000-0xfeaf70ff] [ 3.964931][ T1] pci 0000:00:07.0: BAR 1 [mem 0xfeaf8000-0xfeaf8fff] [ 3.969355][ T1] pci 0000:00:07.0: BAR 2 [mem 0xfca0c000-0xfca0cfff 64bit pref] [ 3.987835][ T1] pci 0000:00:08.0: [1af4:1110] type 00 class 0x050000 conventional PCI endpoint [ 4.007550][ T1] pci 0000:00:08.0: BAR 0 [mem 0xfeaf9000-0xfeaf90ff] [ 4.011628][ T1] pci 0000:00:08.0: BAR 2 [mem 0xfa000000-0xfbffffff 64bit pref] [ 4.029541][ T1] pci 0000:00:1d.0: [8086:2934] type 00 class 0x0c0300 conventional PCI endpoint [ 4.047766][ T1] pci 0000:00:1d.0: BAR 4 [io 0xc0e0-0xc0ff] [ 4.054440][ T1] pci 0000:00:1d.1: [8086:2935] type 00 class 0x0c0300 conventional PCI endpoint [ 4.067715][ T1] pci 0000:00:1d.1: BAR 4 [io 0xc100-0xc11f] [ 4.073678][ T1] pci 0000:00:1d.2: [8086:2936] type 00 class 0x0c0300 conventional PCI endpoint [ 4.087439][ T1] pci 0000:00:1d.2: BAR 4 [io 0xc120-0xc13f] [ 4.093896][ T1] pci 0000:00:1d.7: [8086:293a] type 00 class 0x0c0320 conventional PCI endpoint [ 4.107646][ T1] pci 0000:00:1d.7: BAR 0 [mem 0xfeafa000-0xfeafafff] [ 4.125541][ T1] pci 0000:00:1f.0: [8086:2918] type 00 class 0x060100 conventional PCI endpoint [ 4.134379][ T1] pci 0000:00:1f.0: quirk: [io 0x0600-0x067f] claimed by ICH6 ACPI/GPIO/TCO [ 4.145113][ T1] pci 0000:00:1f.0: quirk_ich7_lpc+0x0/0x390 took 19531 usecs [ 4.152017][ T1] pci 0000:00:1f.2: [8086:2922] type 00 class 0x010601 conventional PCI endpoint [ 4.168385][ T1] pci 0000:00:1f.2: BAR 4 [io 0xc140-0xc15f] [ 4.171881][ T1] pci 0000:00:1f.2: BAR 5 [mem 0xfeafb000-0xfeafbfff] [ 4.188642][ T1] pci 0000:00:1f.3: [8086:2930] type 00 class 0x0c0500 conventional PCI endpoint [ 4.207243][ T1] pci 0000:00:1f.3: BAR 4 [io 0x0700-0x073f] [ 4.225367][ T1] pci 0000:00:04.0: PCI bridge to [bus 01] [ 4.289957][ T1] ACPI: PCI: Interrupt link LNKA configured for IRQ 10 [ 4.307999][ T1] ACPI: PCI: Interrupt link LNKB configured for IRQ 10 [ 4.326032][ T1] ACPI: PCI: Interrupt link LNKC configured for IRQ 11 [ 4.334059][ T1] ACPI: PCI: Interrupt link LNKD configured for IRQ 11 [ 4.347391][ T1] ACPI: PCI: Interrupt link LNKE configured for IRQ 10 [ 4.353639][ T1] ACPI: PCI: Interrupt link LNKF configured for IRQ 10 [ 4.368907][ T1] ACPI: PCI: Interrupt link LNKG configured for IRQ 11 [ 4.385305][ T1] ACPI: PCI: Interrupt link LNKH configured for IRQ 11 [ 4.390207][ T1] ACPI: PCI: Interrupt link GSIA configured for IRQ 16 [ 4.404902][ T1] ACPI: PCI: Interrupt link GSIB configured for IRQ 17 [ 4.409642][ T1] ACPI: PCI: Interrupt link GSIC configured for IRQ 18 [ 4.414561][ T1] ACPI: PCI: Interrupt link GSID configured for IRQ 19 [ 4.425232][ T1] ACPI: PCI: Interrupt link GSIE configured for IRQ 20 [ 4.430499][ T1] ACPI: PCI: Interrupt link GSIF configured for IRQ 21 [ 4.445280][ T1] ACPI: PCI: Interrupt link GSIG configured for IRQ 22 [ 4.450381][ T1] ACPI: PCI: Interrupt link GSIH configured for IRQ 23 [ 4.489990][ T1] iommu: Default domain type: Translated [ 4.493850][ T1] iommu: DMA domain TLB invalidation policy: lazy mode [ 4.508355][ T1] SCSI subsystem initialized [ 4.512056][ T1] libata version 3.00 loaded. [ 4.525676][ T1] ACPI: bus type USB registered [ 4.529589][ T1] usbcore: registered new interface driver usbfs [ 4.534284][ T1] usbcore: registered new interface driver hub [ 4.544944][ T1] usbcore: registered new device driver usb [ 4.550722][ T1] mc: Linux media interface: v0.10 [ 4.564831][ T1] videodev: Linux video capture interface: v2.00 [ 4.569780][ T1] pps_core: LinuxPPS API ver. 1 registered [ 4.574182][ T1] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti [ 4.584995][ T1] PTP clock support registered [ 4.589166][ T1] EDAC MC: Ver: 3.0.0 [ 4.607816][ T1] Advanced Linux Sound Architecture Driver Initialized. [ 4.626535][ T1] Bluetooth: Core ver 2.22 [ 4.629737][ T1] NET: Registered PF_BLUETOOTH protocol family [ 4.633974][ T1] Bluetooth: HCI device and connection manager initialized [ 4.644832][ T1] Bluetooth: HCI socket layer initialized [ 4.649166][ T1] Bluetooth: L2CAP socket layer initialized [ 4.653540][ T1] Bluetooth: SCO socket layer initialized [ 4.664849][ T1] NET: Registered PF_ATMPVC protocol family [ 4.669445][ T1] NET: Registered PF_ATMSVC protocol family [ 4.673913][ T1] NetLabel: Initializing [ 4.684797][ T1] NetLabel: domain hash size = 128 [ 4.688385][ T1] NetLabel: protocols = UNLABELED CIPSOv4 CALIPSO [ 4.693257][ T1] NetLabel: unlabeled traffic allowed by default [ 4.705955][ T1] nfc: nfc_init: NFC Core ver 0.1 [ 4.709863][ T1] NET: Registered PF_NFC protocol family [ 4.714050][ T1] mctp: management component transport protocol core [ 4.724794][ T1] NET: Registered PF_MCTP protocol family [ 4.729056][ T1] PCI: Using ACPI for IRQ routing [ 5.614306][ T1] PCI: pci_cache_line_size set to 64 bytes [ 5.626281][ T1] e820: register RAM buffer resource [mem 0x0009fc00-0x0009ffff] [ 5.630604][ T1] e820: register RAM buffer resource [mem 0x5ffdd000-0x5fffffff] [ 5.645308][ T1] pci 0000:00:01.0: vgaarb: setting as boot VGA device [ 5.649126][ T1] pci 0000:00:01.0: vgaarb: bridge control possible [ 5.652918][ T1] pci 0000:00:01.0: vgaarb: VGA device added: decodes=io+mem,owns=io+mem,locks=none [ 5.664807][ T1] vgaarb: loaded [ 5.669528][ T1] hpet0: at MMIO 0xfed00000, IRQs 2, 8, 0 [ 5.672705][ T1] hpet0: 3 comparators, 64-bit 100.000000 MHz counter [ 5.688335][ T1] clocksource: Switched to clocksource kvm-clock [ 5.693247][ T1] VFS: Disk quotas dquot_6.6.0 [ 5.698223][ T1] VFS: Dquot-cache hash table entries: 512 (4096 bytes) [ 5.709770][ T1] netfs: FS-Cache loaded [ 5.713437][ T1] CacheFiles: Loaded [ 5.718413][ T1] TOMOYO: 2.6.0 [ 5.728169][ T1] Mandatory Access Control activated. [ 5.732601][ T1] AppArmor: AppArmor Filesystem Enabled [ 5.736324][ T1] acpi PNP0C01:00: Reserved [mem 0xb0000000-0xbfffffff] [ 5.748434][ T1] pnp: PnP ACPI init [ 5.779608][ T1] pnp: PnP ACPI: found 4 devices [ 5.824058][ T1] clocksource: acpi_pm: mask: 0xffffff max_cycles: 0xffffff, max_idle_ns: 2085701024 ns [ 5.848717][ T1] NET: Registered PF_INET protocol family [ 5.852321][ T1] IP idents hash table entries: 16384 (order: 5, 131072 bytes, vmalloc) [ 5.862688][ T1] tcp_listen_portaddr_hash hash table entries: 512 (order: 4, 36864 bytes, vmalloc) [ 5.878402][ T1] Table-perturb hash table entries: 65536 (order: 6, 262144 bytes, vmalloc) [ 5.884556][ T1] TCP established hash table entries: 8192 (order: 4, 65536 bytes, vmalloc) [ 5.898656][ T1] TCP bind hash table entries: 8192 (order: 9, 1179648 bytes, vmalloc) [ 5.908365][ T1] TCP: Hash tables configured (established 8192 bind 8192) [ 5.918621][ T1] MPTCP token hash table entries: 1024 (order: 5, 90112 bytes, vmalloc) [ 5.928365][ T1] UDP hash table entries: 512 (order: 5, 131072 bytes, vmalloc) [ 5.938523][ T1] NET: Registered PF_UNIX/PF_LOCAL protocol family [ 5.945511][ T1] RPC: Registered named UNIX socket transport module. [ 5.958169][ T1] RPC: Registered udp transport module. [ 5.961296][ T1] RPC: Registered tcp transport module. [ 5.964348][ T1] RPC: Registered tcp-with-tls transport module. [ 5.967835][ T1] RPC: Registered tcp NFSv4.1 backchannel transport module. [ 5.989577][ T1] NET: Registered PF_XDP protocol family [ 5.992871][ T1] pci 0000:00:04.0: bridge window [io 0x1000-0x0fff] to [bus 01] add_size 1000 [ 6.008178][ T1] pci 0000:00:04.0: bridge window [io 0x1000-0x1fff]: assigned [ 6.013053][ T1] pci 0000:00:04.0: PCI bridge to [bus 01] [ 6.016896][ T1] pci 0000:00:04.0: bridge window [io 0x1000-0x1fff] [ 6.039818][ T1] pci 0000:00:04.0: bridge window [mem 0xfe800000-0xfe9fffff] [ 6.045349][ T1] pci 0000:00:04.0: bridge window [mem 0xfc800000-0xfc9fffff 64bit pref] [ 6.059528][ T1] pci_bus 0000:00: resource 4 [io 0x0000-0x0cf7 window] [ 6.063571][ T1] pci_bus 0000:00: resource 5 [io 0x0d00-0xffff window] [ 6.067572][ T1] pci_bus 0000:00: resource 6 [mem 0x000a0000-0x000bffff window] [ 6.088150][ T1] pci_bus 0000:00: resource 7 [mem 0x60000000-0xafffffff window] [ 6.092805][ T1] pci_bus 0000:00: resource 8 [mem 0xc0000000-0xfebfffff window] [ 6.097302][ T1] pci_bus 0000:00: resource 9 [mem 0x5c0000000-0xdbfffffff window] [ 6.118150][ T1] pci_bus 0000:01: resource 0 [io 0x1000-0x1fff] [ 6.121873][ T1] pci_bus 0000:01: resource 1 [mem 0xfe800000-0xfe9fffff] [ 6.125906][ T1] pci_bus 0000:01: resource 2 [mem 0xfc800000-0xfc9fffff 64bit pref] [ 6.159677][ T1] ACPI: \_SB_.GSIA: Enabled at IRQ 16 [ 6.183535][ T1] pci 0000:00:1d.0: quirk_usb_early_handoff+0x0/0x1830 took 43358 usecs [ 6.207451][ T1] ACPI: \_SB_.GSIB: Enabled at IRQ 17 [ 6.248404][ T1] pci 0000:00:1d.1: quirk_usb_early_handoff+0x0/0x1830 took 48786 usecs [ 6.277579][ T1] ACPI: \_SB_.GSIC: Enabled at IRQ 18 [ 6.311195][ T1] pci 0000:00:1d.2: quirk_usb_early_handoff+0x0/0x1830 took 55986 usecs [ 6.348551][ T1] ACPI: \_SB_.GSID: Enabled at IRQ 19 [ 6.395834][ T1] pci 0000:00:1d.7: quirk_usb_early_handoff+0x0/0x1830 took 77538 usecs [ 6.408633][ T1] PCI: CLS 0 bytes, default 64 [ 6.415805][ T1] DMAR: No RMRR found [ 6.428201][ T1] DMAR: No SATC found [ 6.431086][ T1] DMAR: dmar0: Using Queued invalidation [ 6.436410][ T52] kworker/u4:3 (52) used greatest stack depth: 27960 bytes left [ 6.441715][ T1] pci 0000:00:00.0: Adding to iommu group 0 [ 6.458481][ T1] pci 0000:00:01.0: Adding to iommu group 1 [ 6.462666][ T1] pci 0000:00:02.0: Adding to iommu group 2 [ 6.466546][ T1] pci 0000:00:03.0: Adding to iommu group 3 [ 6.478357][ T1] pci 0000:00:04.0: Adding to iommu group 4 [ 6.482512][ T1] pci 0000:00:05.0: Adding to iommu group 5 [ 6.489060][ T1] pci 0000:00:06.0: Adding to iommu group 6 [ 6.498317][ T1] pci 0000:00:07.0: Adding to iommu group 7 [ 6.508499][ T1] pci 0000:00:08.0: Adding to iommu group 8 [ 6.518530][ T1] pci 0000:00:1d.0: Adding to iommu group 9 [ 6.522543][ T1] pci 0000:00:1d.1: Adding to iommu group 9 [ 6.526517][ T1] pci 0000:00:1d.2: Adding to iommu group 9 [ 6.538321][ T1] pci 0000:00:1d.7: Adding to iommu group 9 [ 6.548512][ T1] pci 0000:00:1f.0: Adding to iommu group 10 [ 6.558342][ T1] pci 0000:00:1f.2: Adding to iommu group 10 [ 6.561975][ T1] pci 0000:00:1f.3: Adding to iommu group 10 [ 6.648179][ T1] DMAR: Intel(R) Virtualization Technology for Directed I/O [ 6.658156][ T1] PCI-DMA: Using software bounce buffering for IO (SWIOTLB) [ 6.668149][ T1] software IO TLB: mapped [mem 0x000000005b400000-0x000000005f400000] (64MB) [ 6.678252][ T1] ACPI: bus type thunderbolt registered [ 6.693298][ T1] RAPL PMU: API unit is 2^-32 Joules, 0 fixed counters, 10737418240 ms ovfl timer [ 6.708339][ T1] no MSR PMU driver. [ 6.728678][ T1] kvm_amd: CPU 0 isn't AMD or Hygon [ 6.739879][ T58] kworker/u4:4 (58) used greatest stack depth: 27768 bytes left [ 6.760188][ T1] Initialise system trusted keyrings [ 6.769379][ T1] workingset: timestamp_bits=40 (anon: 36) max_order=18 bucket_order=0 (anon: 0) [ 6.791152][ T1] DLM installed [ 6.795642][ T1] squashfs: version 4.0 (2009/01/31) Phillip Lougher [ 6.811222][ T1] NFS: Registering the id_resolver key type [ 6.814547][ T1] Key type id_resolver registered [ 6.817593][ T1] Key type id_legacy registered [ 6.828536][ T1] nfs4filelayout_init: NFSv4 File Layout Driver Registering... [ 6.838297][ T1] nfs4flexfilelayout_init: NFSv4 Flexfile Layout Driver Registering... [ 6.850128][ T1] smbdirect: subsystem loading... [ 6.860844][ T93] kworker/u4:4 (93) used greatest stack depth: 27672 bytes left [ 6.866144][ T1] smbdirect: subsystem loaded [ 6.881702][ T1] Key type cifs.spnego registered [ 6.884814][ T1] Key type cifs.idmap registered [ 6.899035][ T1] ntfs3: Enabled Linux POSIX ACLs support [ 6.902474][ T1] ntfs3: Read-only LZX/Xpress compression included [ 6.918430][ T1] efs: 1.0a - http://aeschi.ch.eu.org/efs/ [ 6.922261][ T1] jffs2: version 2.2. (NAND) (SUMMARY) © 2001-2006 Red Hat, Inc. [ 6.938525][ T1] romfs: ROMFS MTD (C) 2007 Red Hat, Inc. [ 6.942179][ T1] QNX4 filesystem 0.2.3 registered. [ 6.945186][ T1] qnx6: QNX6 filesystem 1.0.0 registered. [ 6.958583][ T1] fuse: init (API version 7.45) [ 6.964371][ T1] orangefs_debugfs_init: called with debug mask: :none: :0: [ 6.978817][ T1] orangefs_init: module version upstream loaded [ 6.983557][ T1] JFS: nTxBlock = 6196, nTxLock = 49570 [ 7.002502][ T1] SGI XFS with ACLs, security attributes, realtime, quota, no debug enabled [ 7.020633][ T1] 9p: Installing v9fs 9p2000 file system support [ 7.025245][ T1] NILFS version 2 loaded [ 7.038156][ T1] befs: version: 0.9.3 [ 7.041211][ T1] ocfs2: Registered cluster interface o2cb [ 7.045258][ T1] ocfs2: Registered cluster interface user [ 7.058555][ T1] OCFS2 User DLM kernel interface loaded [ 7.081320][ T1] gfs2: GFS2 installed [ 7.102231][ T1] ceph: loaded (mds proto 32) [ 7.121666][ T1] NET: Registered PF_ALG protocol family [ 7.125629][ T1] async_tx: api initialized (async) [ 7.138371][ T1] Key type asymmetric registered [ 7.141891][ T1] Asymmetric key parser 'x509' registered [ 7.145946][ T1] Asymmetric key parser 'pkcs8' registered [ 7.158201][ T1] Key type pkcs7_test registered [ 7.161824][ T1] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 239) [ 7.178963][ T1] io scheduler mq-deadline registered [ 7.182349][ T1] io scheduler kyber registered [ 7.185728][ T1] io scheduler bfq registered [ 7.200871][ T127] kworker/u4:4 (127) used greatest stack depth: 27224 bytes left [ 7.230848][ T1] ACPI: \_SB_.GSIE: Enabled at IRQ 20 [ 7.250716][ T1] pcieport 0000:00:04.0: PME: Signaling with IRQ 25 [ 7.262092][ T1] pcieport 0000:00:04.0: AER: enabled with IRQ 26 [ 7.282027][ T1] input: Power Button as /devices/platform/LNXPWRBN:00/input/input0 [ 7.287662][ T1] ACPI: button: Power Button [PWRF] [ 7.651847][ T1] ioatdma: Intel(R) QuickData Technology Driver 5.00 [ 7.680510][ T1] ACPI: \_SB_.GSIF: Enabled at IRQ 21 [ 7.718059][ T1] ACPI: \_SB_.GSIH: Enabled at IRQ 23 [ 8.212213][ T1] N_HDLC line discipline registered with maxframe=4096 [ 8.228563][ T1] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled [ 8.238299][ T1] 00:03: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A [ 8.310035][ T1] Non-volatile memory driver v1.3 [ 8.327056][ T1] usbcore: registered new interface driver xillyusb [ 8.341891][ T1] ACPI: bus type drm_connector registered [ 8.360521][ T1] [drm] Initialized vgem 1.0.0 for vgem on minor 0 [ 8.369674][ T1] [drm] Initialized vkms 1.0.0 for vkms on minor 1 [ 8.507654][ T1] Console: switching to colour frame buffer device 128x48 [ 8.598152][ T1] faux_driver vkms: [drm] fb0: vkmsdrmfb frame buffer device [ 8.607794][ T1] usbcore: registered new interface driver udl [ 8.619027][ T1] [drm] pci: virtio-vga detected at 0000:00:01.0 [ 8.622690][ T1] virtio-pci 0000:00:01.0: vgaarb: deactivate vga console [ 8.639980][ T1] [drm] features: -virgl +edid -resource_blob -host_visible [ 8.639990][ T1] [drm] features: -context_init [ 8.662806][ T1] [drm] number of scanouts: 1 [ 8.665412][ T1] [drm] number of cap sets: 0 [ 8.681698][ T1] [drm] Initialized virtio_gpu 0.1.0 for 0000:00:01.0 on minor 2 [ 8.719615][ T1] fbcon: virtio_gpudrmfb (fb1) is primary device [ 8.719625][ T1] fbcon: Remapping primary device, fb1, to tty 1-63 [ 286.408378][ T25] INFO: task swapper/0:1 blocked for more than 143 seconds. [ 286.408542][ T25] Not tainted syzkaller #0 [ 286.408547][ T25] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 286.408552][ T25] task:swapper/0 state:D stack:20264 pid:1 tgid:1 ppid:0 task_flags:0x0140 flags:0x00080000 [ 286.408585][ T25] Call Trace: [ 286.408625][ T25] [ 286.408632][ T25] __schedule+0x17d9/0x56c0 [ 286.408890][ T25] ? virtio_gpu_cmd_resource_flush+0x7c/0x330 [ 286.408948][ T25] ? do_raw_spin_lock+0x12b/0x2f0 [ 286.408963][ T25] ? rcu_is_watching+0x15/0xb0 [ 286.408977][ T25] ? __pfx___schedule+0x10/0x10 [ 286.408988][ T25] ? schedule+0x90/0x360 [ 286.409000][ T25] ? rcu_is_watching+0x15/0xb0 [ 286.409012][ T25] ? lock_release+0x4b/0x3c0 [ 286.409029][ T25] schedule+0x164/0x360 [ 286.409041][ T25] virtio_gpu_queue_fenced_ctrl_buffer+0x749/0x10c0 [ 286.409121][ T25] ? virtio_dev_probe+0xdf6/0x10c0 [ 286.409140][ T25] ? __pfx_virtio_gpu_queue_fenced_ctrl_buffer+0x10/0x10 [ 286.409157][ T25] ? __pfx_autoremove_wake_function+0x10/0x10 [ 286.409174][ T25] ? rcu_is_watching+0x15/0xb0 [ 286.409187][ T25] ? virtio_gpu_cmd_resource_flush+0x7c/0x330 [ 286.409206][ T25] ? __asan_memset+0x22/0x50 [ 286.409221][ T25] virtio_gpu_primary_plane_update+0xc43/0x1310 [ 286.409238][ T25] ? drm_mode_copy+0x5e/0x90 [ 286.409254][ T25] ? __pfx_virtio_gpu_primary_plane_update+0x10/0x10 [ 286.409271][ T25] drm_atomic_helper_commit_planes+0x626/0xea0 [ 286.409294][ T25] drm_atomic_helper_commit_tail+0x60/0x510 [ 286.409311][ T25] commit_tail+0x2b1/0x3c0 [ 286.409324][ T25] drm_atomic_helper_commit+0xa77/0xb10 [ 286.409340][ T25] ? __pfx_drm_atomic_helper_commit+0x10/0x10 [ 286.409354][ T25] drm_atomic_commit+0x24e/0x2b0 [ 286.409365][ T25] ? __drm_atomic_helper_plane_duplicate_state+0x4b/0x120 [ 286.409378][ T25] ? __pfx_drm_atomic_commit+0x10/0x10 [ 286.409390][ T25] ? __pfx___drm_printfn_info+0x10/0x10 [ 286.409406][ T25] ? drm_client_rotation+0x444/0x5b0 [ 286.409428][ T25] ? __asan_memset+0x22/0x50 [ 286.409441][ T25] drm_client_modeset_commit_atomic+0x660/0x7e0 [ 286.409455][ T25] ? rcu_is_watching+0x15/0xb0 [ 286.409469][ T25] ? __pfx_drm_client_modeset_commit_atomic+0x10/0x10 [ 286.409486][ T25] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 286.409501][ T25] ? trace_irq_enable+0x3b/0x140 [ 286.409520][ T25] drm_client_modeset_commit_locked+0xcb/0x4d0 [ 286.409533][ T25] drm_fb_helper_pan_display+0x3e9/0xbe0 [ 286.409552][ T25] ? __pfx_drm_fb_helper_pan_display+0x10/0x10 [ 286.409567][ T25] fb_pan_display+0x3a3/0x6a0 [ 286.409586][ T25] bit_update_start+0x4c/0x1e0 [ 286.409602][ T25] fbcon_switch+0x130e/0x20b0 [ 286.409622][ T25] ? __pfx_fbcon_switch+0x10/0x10 [ 286.409640][ T25] ? __pfx_hide_cursor+0x10/0x10 [ 286.409655][ T25] ? is_console_locked+0x9/0x20 [ 286.409669][ T25] ? set_origin+0x346/0x480 [ 286.409681][ T25] redraw_screen+0x57b/0x1020 [ 286.409695][ T25] ? fbcon_prepare_logo+0xaae/0xe40 [ 286.409711][ T25] ? __pfx_redraw_screen+0x10/0x10 [ 286.409725][ T25] ? is_console_locked+0x9/0x20 [ 286.409738][ T25] ? con_is_bound+0x15e/0x1f0 [ 286.409752][ T25] set_con2fb_map+0xaff/0x1020 [ 286.409769][ T25] fbcon_fb_registered+0x24d/0x610 [ 286.409785][ T25] register_framebuffer+0x6e8/0x880 [ 286.409802][ T25] ? _raw_spin_unlock_irqrestore+0x4c/0x80 [ 286.409817][ T25] ? __pfx_register_framebuffer+0x10/0x10 [ 286.409835][ T25] ? lock_release+0x4b/0x3c0 [ 286.409857][ T25] ? __drm_fb_helper_initial_config_and_unlock+0x14d8/0x1b50 [ 286.409878][ T25] __drm_fb_helper_initial_config_and_unlock+0x1555/0x1b50 [ 286.409900][ T25] ? __pfx___drm_fb_helper_initial_config_and_unlock+0x10/0x10 [ 286.409920][ T25] ? virtio_gpu_driver_open+0x12b/0x1a0 [ 286.409936][ T25] drm_fbdev_client_hotplug+0x16c/0x230 [ 286.409952][ T25] drm_client_register+0x16e/0x200 [ 286.409973][ T25] drm_fbdev_client_setup+0x1a0/0x450 [ 286.409987][ T25] ? drm_client_setup+0xb0/0x220 [ 286.410001][ T25] drm_client_setup+0x107/0x220 [ 286.410015][ T25] virtio_gpu_probe+0x229/0x290 [ 286.410030][ T25] virtio_dev_probe+0xdf6/0x10c0 [ 286.410042][ T25] ? up_write+0x19f/0x4a0 [ 286.410059][ T25] ? __pfx_virtio_dev_probe+0x10/0x10 [ 286.410073][ T25] ? driver_sysfs_add+0x1fe/0x210 [ 286.410087][ T25] ? __pfx_virtio_dev_probe+0x10/0x10 [ 286.410098][ T25] really_probe+0x254/0xae0 [ 286.410113][ T25] __driver_probe_device+0x1e8/0x360 [ 286.410127][ T25] driver_probe_device+0x4f/0x240 [ 286.410141][ T25] __driver_attach+0x339/0x600 [ 286.410154][ T25] bus_for_each_dev+0x23b/0x2c0 [ 286.410173][ T25] ? __pfx___driver_attach+0x10/0x10 [ 286.410186][ T25] ? __pfx_bus_for_each_dev+0x10/0x10 [ 286.410203][ T25] ? do_raw_spin_unlock+0x4d/0x210 [ 286.410219][ T25] bus_add_driver+0x345/0x670 [ 286.410286][ T25] driver_register+0x23a/0x320 [ 286.410300][ T25] ? __pfx_virtio_gpu_driver_init+0x10/0x10 [ 286.410373][ T25] virtio_gpu_driver_init+0x96/0x110 [ 286.410443][ T25] do_one_initcall+0x250/0x870 [ 286.410503][ T25] ? __pfx_virtio_gpu_driver_init+0x10/0x10 [ 286.410522][ T25] ? __pfx_do_one_initcall+0x10/0x10 [ 286.410537][ T25] ? __pfx___schedule+0x10/0x10 [ 286.410551][ T25] ? rcu_is_watching+0x15/0xb0 [ 286.410565][ T25] ? rcu_is_watching+0x15/0xb0 [ 286.410577][ T25] ? trace_irq_enable+0x3b/0x140 [ 286.410595][ T25] ? irqentry_exit+0x218/0x8f0 [ 286.410610][ T25] ? trace_irq_disable+0x3b/0x140 [ 286.410629][ T25] ? parameq+0x1d/0x170 [ 286.410643][ T25] ? next_arg+0x4a0/0x5e0 [ 286.410658][ T25] ? parameq+0x14d/0x170 [ 286.410671][ T25] ? parse_args+0x9ff/0xb10 [ 286.410688][ T25] ? rcu_is_watching+0x15/0xb0 [ 286.410701][ T25] do_initcall_level+0x10a/0x1a0 [ 286.410721][ T25] ? kernel_init+0x1d/0x1d0 [ 286.410737][ T25] do_initcalls+0x59/0xa0 [ 286.410754][ T25] kernel_init_freeable+0x29d/0x3e0 [ 286.410772][ T25] ? __pfx_kernel_init+0x10/0x10 [ 286.410788][ T25] kernel_init+0x1d/0x1d0 [ 286.410804][ T25] ? __pfx_kernel_init+0x10/0x10 [ 286.410820][ T25] ret_from_fork+0x514/0xb70 [ 286.410892][ T25] ? __pfx_ret_from_fork+0x10/0x10 [ 286.410908][ T25] ? __switch_to+0xc89/0x1420 [ 286.410926][ T25] ? __pfx_kernel_init+0x10/0x10 [ 286.410942][ T25] ret_from_fork_asm+0x1a/0x30 [ 286.410961][ T25] [ 286.410973][ T25] INFO: task kworker/0:1:10 blocked for more than 143 seconds. [ 286.410983][ T25] Not tainted syzkaller #0 [ 286.410990][ T25] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 286.410996][ T25] task:kworker/0:1 state:D stack:26904 pid:10 tgid:10 ppid:2 task_flags:0x4208060 flags:0x00080000 [ 286.411041][ T25] Workqueue: events virtio_gpu_dequeue_ctrl_func [ 286.411061][ T25] Call Trace: [ 286.411066][ T25] [ 286.411073][ T25] __schedule+0x17d9/0x56c0 [ 286.411088][ T25] ? kasan_save_track+0x3e/0x80 [ 286.411103][ T25] ? kfree+0x1c5/0x640 [ 286.411117][ T25] ? worker_thread+0xa47/0xfb0 [ 286.411132][ T25] ? kthread+0x388/0x470 [ 286.411144][ T25] ? ret_from_fork+0x514/0xb70 [ 286.411155][ T25] ? ret_from_fork_asm+0x1a/0x30 [ 286.411170][ T25] ? do_raw_spin_lock+0x12b/0x2f0 [ 286.411184][ T25] ? __pfx___schedule+0x10/0x10 [ 286.411196][ T25] ? rcu_is_watching+0x15/0xb0 [ 286.411209][ T25] ? rcu_is_watching+0x15/0xb0 [ 286.411222][ T25] ? lock_release+0x4b/0x3c0 [ 286.411238][ T25] ? rcu_is_watching+0x15/0xb0 [ 286.411249][ T25] ? schedule+0x90/0x360 [ 286.411261][ T25] ? trace_irq_enable+0x3b/0x140 [ 286.411278][ T25] schedule+0x164/0x360 [ 286.411290][ T25] schedule_preempt_disabled+0x13/0x30 [ 286.411304][ T25] __mutex_lock+0x7bf/0x1550 [ 286.411320][ T25] ? __mutex_lock+0x5d4/0x1550 [ 286.411334][ T25] ? drm_client_dev_hotplug+0xe1/0x4c0 [ 286.411347][ T25] ? __pfx___mutex_lock+0x10/0x10 [ 286.411364][ T25] ? drm_sysfs_hotplug_event+0x10e/0x150 [ 286.411376][ T25] ? __pfx_drm_sysfs_hotplug_event+0x10/0x10 [ 286.411389][ T25] drm_client_dev_hotplug+0xe1/0x4c0 [ 286.411401][ T25] ? __pfx_virtio_gpu_cmd_get_display_info_cb+0x10/0x10 [ 286.411432][ T25] virtio_gpu_dequeue_ctrl_func+0x4ec/0x8a0 [ 286.411450][ T25] ? rcu_is_watching+0x15/0xb0 [ 286.411462][ T25] ? __pfx_virtio_gpu_dequeue_ctrl_func+0x10/0x10 [ 286.411477][ T25] ? lock_acquire+0x5f/0x350 [ 286.411495][ T25] ? rcu_is_watching+0x15/0xb0 [ 286.411507][ T25] ? process_scheduled_works+0xa20/0x14e0 [ 286.411523][ T25] process_scheduled_works+0xa8e/0x14e0 [ 286.411543][ T25] ? __pfx_process_scheduled_works+0x10/0x10 [ 286.411556][ T25] ? do_raw_spin_lock+0x12b/0x2f0 [ 286.411572][ T25] ? assign_work+0x3cf/0x5d0 [ 286.411587][ T25] worker_thread+0xa47/0xfb0 [ 286.411604][ T25] ? __kthread_parkme+0x71/0x1f0 [ 286.411624][ T25] kthread+0x388/0x470 [ 286.411635][ T25] ? __pfx_worker_thread+0x10/0x10 [ 286.411650][ T25] ? __pfx_kthread+0x10/0x10 [ 286.411661][ T25] ret_from_fork+0x514/0xb70 [ 286.411674][ T25] ? __pfx_ret_from_fork+0x10/0x10 [ 286.411685][ T25] ? __switch_to+0xc89/0x1420 [ 286.411701][ T25] ? __pfx_kthread+0x10/0x10 [ 286.411712][ T25] ret_from_fork_asm+0x1a/0x30 [ 286.411731][ T25] [ 286.411944][ T25] INFO: task kworker/0:2:804 blocked for more than 143 seconds. [ 286.411959][ T25] Not tainted syzkaller #0 [ 286.411965][ T25] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 286.411971][ T25] task:kworker/0:2 state:D stack:25304 pid:804 tgid:804 ppid:2 task_flags:0x4208060 flags:0x00080000 [ 286.412019][ T25] Workqueue: events drm_fb_helper_damage_work [ 286.412038][ T25] Call Trace: [ 286.412043][ T25] [ 286.412050][ T25] __schedule+0x17d9/0x56c0 [ 286.412063][ T25] ? trace_irq_enable+0x3b/0x140 [ 286.412079][ T25] ? __mutex_unlock_slowpath+0x724/0x8e0 [ 286.412096][ T25] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 286.412110][ T25] ? do_raw_spin_lock+0x12b/0x2f0 [ 286.412125][ T25] ? __pfx___schedule+0x10/0x10 [ 286.412136][ T25] ? rcu_is_watching+0x15/0xb0 [ 286.412148][ T25] ? rcu_is_watching+0x15/0xb0 [ 286.412160][ T25] ? lock_release+0x4b/0x3c0 [ 286.412175][ T25] ? rcu_is_watching+0x15/0xb0 [ 286.412185][ T25] ? schedule+0x90/0x360 [ 286.412197][ T25] ? trace_irq_enable+0x3b/0x140 [ 286.412211][ T25] schedule+0x164/0x360 [ 286.412223][ T25] schedule_preempt_disabled+0x13/0x30 [ 286.412234][ T25] __mutex_lock+0x7bf/0x1550 [ 286.412249][ T25] ? __mutex_lock+0x5d4/0x1550 [ 286.412262][ T25] ? drm_fb_helper_damage_work+0x11b/0x740 [ 286.412279][ T25] ? __pfx___mutex_lock+0x10/0x10 [ 286.412291][ T25] ? do_raw_spin_lock+0x12b/0x2f0 [ 286.412309][ T25] ? do_raw_spin_lock+0x12b/0x2f0 [ 286.412323][ T25] drm_fb_helper_damage_work+0x11b/0x740 [ 286.412339][ T25] ? rcu_is_watching+0x15/0xb0 [ 286.412351][ T25] ? __pfx_drm_fb_helper_damage_work+0x10/0x10 [ 286.412366][ T25] ? rcu_is_watching+0x15/0xb0 [ 286.412379][ T25] ? process_scheduled_works+0xa20/0x14e0 [ 286.412393][ T25] process_scheduled_works+0xa8e/0x14e0 [ 286.412412][ T25] ? __pfx_process_scheduled_works+0x10/0x10 [ 286.412437][ T25] ? do_raw_spin_lock+0x12b/0x2f0 [ 286.412450][ T25] ? assign_work+0x3cf/0x5d0 [ 286.412464][ T25] worker_thread+0xa47/0xfb0 [ 286.412481][ T25] ? __kthread_parkme+0x71/0x1f0 [ 286.412497][ T25] kthread+0x388/0x470 [ 286.412508][ T25] ? __pfx_worker_thread+0x10/0x10 [ 286.412521][ T25] ? __pfx_kthread+0x10/0x10 [ 286.412531][ T25] ret_from_fork+0x514/0xb70 [ 286.412543][ T25] ? __pfx_ret_from_fork+0x10/0x10 [ 286.412554][ T25] ? __switch_to+0xc89/0x1420 [ 286.412569][ T25] ? __pfx_kthread+0x10/0x10 [ 286.412579][ T25] ret_from_fork_asm+0x1a/0x30 [ 286.412596][ T25] [ 286.412603][ T25] INFO: lockdep is turned off. [ 286.412610][ T25] Kernel panic - not syncing: hung_task: blocked tasks [ 286.412621][ T25] CPU: 0 UID: 0 PID: 25 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full) [ 286.412633][ T25] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 286.412640][ T25] Call Trace: [ 286.412646][ T25] [ 286.412650][ T25] vpanic+0x56c/0xa60 [ 286.412664][ T25] ? __pfx_vpanic+0x10/0x10 [ 286.412677][ T25] panic+0xc5/0xd0 [ 286.412688][ T25] ? __pfx_panic+0x10/0x10 [ 286.412699][ T25] ? sched_show_task+0x4b2/0x5f0 [ 286.412715][ T25] ? rcu_is_watching+0x15/0xb0 [ 286.412727][ T25] watchdog+0x1030/0x1030 [ 286.412744][ T25] ? watchdog+0x1c7/0x1030 [ 286.412759][ T25] kthread+0x388/0x470 [ 286.412769][ T25] ? __pfx_watchdog+0x10/0x10 [ 286.412782][ T25] ? __pfx_kthread+0x10/0x10 [ 286.412793][ T25] ret_from_fork+0x514/0xb70 [ 286.412803][ T25] ? __pfx_ret_from_fork+0x10/0x10 [ 286.412814][ T25] ? __switch_to+0xc89/0x1420 [ 286.412828][ T25] ? __pfx_kthread+0x10/0x10 [ 286.412837][ T25] ret_from_fork_asm+0x1a/0x30 [ 286.412852][ T25] [ 286.413313][ T25] Kernel Offset: disabled