Hello, syzbot tried to test the proposed patch but the build/boot failed: 00-0xbfffffff] -> [mem 0x00000000-0xbfffffff] [ 0.058488] NUMA: Node 0 [mem 0x00000000-0xbfffffff] + [mem 0x100000000-0x23fffffff] -> [mem 0x00000000-0x23fffffff] [ 0.060840] NODE_DATA(0) allocated [mem 0x23fffa000-0x23fffdfff] [ 0.103932] Zone ranges: [ 0.105131] DMA [mem 0x0000000000001000-0x0000000000ffffff] [ 0.107499] DMA32 [mem 0x0000000001000000-0x00000000ffffffff] [ 0.109481] Normal [mem 0x0000000100000000-0x000000023fffffff] [ 0.112322] Movable zone start for each node [ 0.113517] Early memory node ranges [ 0.114833] node 0: [mem 0x0000000000001000-0x000000000009efff] [ 0.116844] node 0: [mem 0x0000000000100000-0x00000000bfffcfff] [ 0.117754] node 0: [mem 0x0000000100000000-0x000000023fffffff] [ 0.119114] Zeroed struct page in unavailable ranges: 101 pages [ 0.119121] Initmem setup node 0 [mem 0x0000000000001000-0x000000023fffffff] [ 0.488208] kasan: KernelAddressSanitizer initialized [ 0.491077] ACPI: PM-Timer IO Port: 0xb008 [ 0.492273] ACPI: LAPIC_NMI (acpi_id[0xff] dfl dfl lint[0x1]) [ 0.493758] IOAPIC[0]: apic_id 0, version 17, address 0xfec00000, GSI 0-23 [ 0.496178] ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 high level) [ 0.498589] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level) [ 0.499528] ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 high level) [ 0.501455] ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 high level) [ 0.505310] Using ACPI (MADT) for SMP configuration information [ 0.507171] smpboot: Allowing 2 CPUs, 0 hotplug CPUs [ 0.508243] PM: hibernation: Registered nosave memory: [mem 0x00000000-0x00000fff] [ 0.509621] PM: hibernation: Registered nosave memory: [mem 0x0009f000-0x0009ffff] [ 0.510867] PM: hibernation: Registered nosave memory: [mem 0x000a0000-0x000effff] [ 0.511960] PM: hibernation: Registered nosave memory: [mem 0x000f0000-0x000fffff] [ 0.513141] PM: hibernation: Registered nosave memory: [mem 0xbfffd000-0xbfffffff] [ 0.514253] PM: hibernation: Registered nosave memory: [mem 0xc0000000-0xfffbbfff] [ 0.515989] PM: hibernation: Registered nosave memory: [mem 0xfffbc000-0xffffffff] [ 0.517624] [mem 0xc0000000-0xfffbbfff] available for PCI devices [ 0.518566] Booting paravirtualized kernel on KVM [ 0.519719] clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns [ 0.521833] setup_percpu: NR_CPUS:64 nr_cpumask_bits:64 nr_cpu_ids:2 nr_node_ids:1 [ 0.523803] percpu: Embedded 65 pages/cpu s228040 r8192 d30008 u1048576 [ 0.525712] kvm-guest: stealtime: cpu 0, msr 1f6820300 [ 0.526590] kvm-guest: PV spinlocks enabled [ 0.527219] PV qspinlock hash table entries: 256 (order: 0, 4096 bytes, linear) [ 0.528285] Built 1 zonelists, mobility grouping on. Total pages: 2064262 [ 0.529218] Policy zone: Normal [ 0.530013] Kernel command line: BOOT_IMAGE=/vmlinuz root=/dev/sda1 console=ttyS0 earlyprintk=serial vsyscall=native net.ifnames=0 sysctl.kernel.hung_task_all_cpu_backtrace=1 [ 0.535469] Dentry cache hash table entries: 1048576 (order: 11, 8388608 bytes, linear) [ 0.538483] Inode-cache hash table entries: 524288 (order: 10, 4194304 bytes, linear) [ 0.540453] mem auto-init: stack:off, heap alloc:off, heap free:off [ 1.404586] Memory: 6936940K/8388204K available (104477K kernel code, 16962K rwdata, 19800K rodata, 2716K init, 14576K bss, 1451008K reserved, 0K cma-reserved) [ 1.409491] Running RCU self tests [ 1.410244] rcu: Preemptible hierarchical RCU implementation. [ 1.411041] rcu: RCU lockdep checking is enabled. [ 1.411868] rcu: RCU restricting CPUs from NR_CPUS=64 to nr_cpu_ids=2. [ 1.413172] rcu: RCU callback double-/use-after-free debug enabled. [ 1.414100] Trampoline variant of Tasks RCU enabled. [ 1.414856] Tracing variant of Tasks RCU enabled. [ 1.415720] rcu: RCU calculated value of scheduler-enlistment delay is 10 jiffies. [ 1.416920] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2 [ 1.434818] NR_IRQS: 4352, nr_irqs: 440, preallocated irqs: 16 [ 1.436389] random: get_random_bytes called from start_kernel+0x248/0x452 with crng_init=0 [ 1.438577] Console: colour VGA+ 80x25 [ 1.440431] printk: console [ttyS0] enabled [ 1.440431] printk: console [ttyS0] enabled [ 1.442758] printk: bootconsole [earlyser0] disabled [ 1.442758] printk: bootconsole [earlyser0] disabled [ 1.445364] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar [ 1.446561] ... MAX_LOCKDEP_SUBCLASSES: 8 [ 1.447268] ... MAX_LOCK_DEPTH: 48 [ 1.448234] ... MAX_LOCKDEP_KEYS: 8192 [ 1.449368] ... CLASSHASH_SIZE: 4096 [ 1.450383] ... MAX_LOCKDEP_ENTRIES: 32768 [ 1.451040] ... MAX_LOCKDEP_CHAINS: 65536 [ 1.451749] ... CHAINHASH_SIZE: 32768 [ 1.452760] memory used by lock dependency info: 6365 kB [ 1.453563] memory used for stack traces: 4224 kB [ 1.454931] per task-struct memory footprint: 1920 bytes [ 1.456060] ACPI: Core revision 20210105 [ 1.457395] APIC: Switch to symmetric I/O mode setup [ 1.459143] x2apic enabled [ 1.463697] Switched APIC routing to physical x2apic. [ 1.471104] ..TIMER: vector=0x30 apic1=0 pin1=0 apic2=-1 pin2=-1 [ 1.472880] clocksource: tsc-early: mask: 0xffffffffffffffff max_cycles: 0x212733415c7, max_idle_ns: 440795236380 ns [ 1.474596] Calibrating delay loop (skipped) preset value.. 4599.99 BogoMIPS (lpj=22999980) [ 1.475862] pid_max: default: 32768 minimum: 301 [ 1.477131] LSM: Security Framework initializing [ 1.484641] Yama: becoming mindful. [ 1.485728] AppArmor: AppArmor initialized [ 1.486377] TOMOYO Linux initialized [ 1.487338] Mount-cache hash table entries: 16384 (order: 5, 131072 bytes, linear) [ 1.488572] Mountpoint-cache hash table entries: 16384 (order: 5, 131072 bytes, linear) [ 1.492797] Last level iTLB entries: 4KB 1024, 2MB 1024, 4MB 1024 [ 1.493825] Last level dTLB entries: 4KB 1024, 2MB 1024, 4MB 1024, 1GB 4 [ 1.494613] Spectre V1 : Mitigation: usercopy/swapgs barriers and __user pointer sanitization [ 1.496256] Spectre V2 : Spectre mitigation: kernel not compiled with retpoline; no mitigation available! [ 1.496268] Speculative Store Bypass: Mitigation: Speculative Store Bypass disabled via prctl and seccomp [ 1.499114] MDS: Mitigation: Clear CPU buffers [ 1.500421] Freeing SMP alternatives memory: 96K [ 1.625192] smpboot: CPU0: Intel(R) Xeon(R) CPU @ 2.30GHz (family: 0x6, model: 0x3f, stepping: 0x0) [ 1.628822] Running RCU-tasks wait API self tests [ 1.734790] Performance Events: unsupported p6 CPU model 63 no PMU driver, software events only. [ 1.737061] rcu: Hierarchical SRCU implementation. [ 1.738746] NMI watchdog: Perf NMI watchdog permanently disabled [ 1.740308] smp: Bringing up secondary CPUs ... [ 1.743161] x86: Booting SMP configuration: [ 1.744082] .... node #0, CPUs: #1 [ 0.048290] kvm-clock: cpu 1, msr 9ff4041, secondary cpu clock [ 1.746880] kvm-guest: stealtime: cpu 1, msr 1f6920300 [ 1.746880] MDS CPU bug present and SMT on, data leak possible. See https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/mds.html for more details. [ 1.746893] smp: Brought up 1 node, 2 CPUs [ 1.747731] smpboot: Max logical packages: 1 [ 1.748615] smpboot: Total of 2 processors activated (9199.99 BogoMIPS) [ 1.756137] devtmpfs: initialized [ 1.766996] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns [ 1.767107] kworker/u4:0 (25) used greatest stack depth: 27696 bytes left [ 1.768357] futex hash table entries: 512 (order: 4, 65536 bytes, linear) [ 1.774706] Callback from call_rcu_tasks_trace() invoked. [ 1.776981] PM: RTC time: 05:54:04, date: 2021-04-28 [ 1.779484] NET: Registered protocol family 16 [ 1.782350] audit: initializing netlink subsys (disabled) [ 1.789010] thermal_sys: Registered thermal governor 'step_wise' [ 1.789025] thermal_sys: Registered thermal governor 'user_space' [ 1.792224] audit: type=2000 audit(1619589244.902:1): state=initialized audit_enabled=0 res=1 [ 1.793888] cpuidle: using governor menu [ 1.795710] ACPI: bus type PCI registered [ 1.797887] dca service started, version 1.12.1 [ 1.799280] PCI: Using configuration type 1 for base access [ 1.834628] kworker/u4:1 (80) used greatest stack depth: 27664 bytes left [ 1.954755] kworker/u4:0 (374) used greatest stack depth: 27048 bytes left [ 2.309454] HugeTLB registered 1.00 GiB page size, pre-allocated 0 pages [ 2.314763] HugeTLB registered 2.00 MiB page size, pre-allocated 0 pages [ 2.325575] cryptd: max_cpu_qlen set to 1000 [ 2.345279] Callback from call_rcu_tasks() invoked. [ 2.524609] raid6: avx2x4 gen() 15219 MB/s [ 2.694788] raid6: avx2x4 xor() 7262 MB/s [ 2.864594] raid6: avx2x2 gen() 11255 MB/s [ 3.034606] raid6: avx2x2 xor() 5120 MB/s [ 3.202375] raid6: avx2x1 gen() 6250 MB/s [ 3.372377] raid6: avx2x1 xor() 3156 MB/s [ 3.542374] raid6: sse2x4 gen() 6546 MB/s [ 3.714623] raid6: sse2x4 xor() 3857 MB/s [ 3.884599] raid6: sse2x2 gen() 5919 MB/s [ 4.054587] raid6: sse2x2 xor() 2612 MB/s [ 4.224587] raid6: sse2x1 gen() 3308 MB/s [ 4.394590] raid6: sse2x1 xor() 1499 MB/s [ 4.395909] raid6: using algorithm avx2x4 gen() 15219 MB/s [ 4.397145] raid6: .... xor() 7262 MB/s, rmw enabled [ 4.398231] raid6: using avx2x2 recovery algorithm [ 4.400027] ACPI: Added _OSI(Module Device) [ 4.401320] ACPI: Added _OSI(Processor Device) [ 4.402230] ACPI: Added _OSI(3.0 _SCP Extensions) [ 4.403371] ACPI: Added _OSI(Processor Aggregator Device) [ 4.404341] ACPI: Added _OSI(Linux-Dell-Video) [ 4.404601] ACPI: Added _OSI(Linux-Lenovo-NV-HDMI-Audio) [ 4.405681] ACPI: Added _OSI(Linux-HPI-Hybrid-Graphics) [ 4.443090] ACPI: 2 ACPI AML tables successfully acquired and loaded [ 4.483327] ACPI: Interpreter enabled [ 4.484827] ACPI: (supports S0 S3 S4 S5) [ 4.485492] ACPI: Using IOAPIC for interrupt routing [ 4.487197] PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug [ 4.490999] ACPI: Enabled 16 GPEs in block 00 to 0F [ 4.570375] ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-ff]) [ 4.571871] acpi PNP0A03:00: _OSC: OS supports [ASPM ClockPM Segments MSI HPX-Type3] [ 4.573808] acpi PNP0A03:00: fail to add MMCONFIG information, can't access extended PCI configuration space under this bridge. [ 4.578475] PCI host bridge to bus 0000:00 [ 4.579556] pci_bus 0000:00: root bus resource [io 0x0000-0x0cf7 window] [ 4.581578] pci_bus 0000:00: root bus resource [io 0x0d00-0xffff window] [ 4.582582] pci_bus 0000:00: root bus resource [mem 0x000a0000-0x000bffff window] [ 4.584602] pci_bus 0000:00: root bus resource [mem 0xc0000000-0xfebfefff window] [ 4.585897] pci_bus 0000:00: root bus resource [bus 00-ff] [ 4.586983] pci 0000:00:00.0: [8086:1237] type 00 class 0x060000 [ 4.596270] pci 0000:00:01.0: [8086:7110] type 00 class 0x060100 [ 4.635352] pci 0000:00:01.3: [8086:7113] type 00 class 0x068000 [ 4.663128] pci 0000:00:01.3: quirk: [io 0xb000-0xb03f] claimed by PIIX4 ACPI [ 4.667290] pci 0000:00:03.0: [1af4:1004] type 00 class 0x000000 [ 4.681139] pci 0000:00:03.0: reg 0x10: [io 0xc000-0xc03f] [ 4.689913] pci 0000:00:03.0: reg 0x14: [mem 0xfe800000-0xfe80007f] [ 4.715281] pci 0000:00:04.0: [1af4:1000] type 00 class 0x020000 [ 4.724631] pci 0000:00:04.0: reg 0x10: [io 0xc040-0xc07f] [ 4.732306] pci 0000:00:04.0: reg 0x14: [mem 0xfe801000-0xfe80107f] [ 4.755983] pci 0000:00:05.0: [1ae0:a002] type 00 class 0x030000 [ 4.768756] pci 0000:00:05.0: reg 0x10: [mem 0xfe000000-0xfe7fffff] [ 4.804905] pci 0000:00:06.0: [1af4:1002] type 00 class 0x00ff00 [ 4.814599] pci 0000:00:06.0: reg 0x10: [io 0xc080-0xc09f] [ 4.845385] pci 0000:00:07.0: [1af4:1005] type 00 class 0x00ff00 [ 4.854677] pci 0000:00:07.0: reg 0x10: [io 0xc0a0-0xc0bf] [ 4.862019] pci 0000:00:07.0: reg 0x14: [mem 0xfe802000-0xfe80203f] [ 4.895345] ACPI: PCI Interrupt Link [LNKA] (IRQs 5 *10 11) [ 4.900887] ACPI: PCI Interrupt Link [LNKB] (IRQs 5 *10 11) [ 4.905638] ACPI: PCI Interrupt Link [LNKC] (IRQs 5 10 *11) [ 4.910451] ACPI: PCI Interrupt Link [LNKD] (IRQs 5 10 *11) [ 4.914692] ACPI: PCI Interrupt Link [LNKS] (IRQs *9) [ 4.926383] iommu: Default domain type: Translated [ 4.928005] pci 0000:00:05.0: vgaarb: setting as boot VGA device [ 4.928005] pci 0000:00:05.0: vgaarb: VGA device added: decodes=io+mem,owns=io+mem,locks=none [ 4.928031] pci 0000:00:05.0: vgaarb: bridge control possible [ 4.929711] vgaarb: loaded [ 4.935676] SCSI subsystem initialized [ 4.938811] ACPI: bus type USB registered [ 4.940933] usbcore: registered new interface driver usbfs [ 4.944914] usbcore: registered new interface driver hub [ 4.946468] usbcore: registered new device driver usb [ 4.951257] mc: Linux media interface: v0.10 [ 4.952541] videodev: Linux video capture interface: v2.00 [ 4.957213] pps_core: LinuxPPS API ver. 1 registered [ 4.958276] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@xxxxxxxx> [ 4.963112] PTP clock support registered [ 4.966465] EDAC MC: Ver: 3.0.0 [ 4.968630] Advanced Linux Sound Architecture Driver Initialized. [ 4.976928] Bluetooth: Core ver 2.22 [ 4.979044] NET: Registered protocol family 31 [ 4.980769] Bluetooth: HCI device and connection manager initialized [ 4.982902] Bluetooth: HCI socket layer initialized [ 4.984625] Bluetooth: L2CAP socket layer initialized [ 4.986482] Bluetooth: SCO socket layer initialized [ 4.988517] NET: Registered protocol family 8 [ 4.990235] NET: Registered protocol family 20 [ 4.992391] NetLabel: Initializing [ 4.994618] NetLabel: domain hash size = 128 [ 4.996509] NetLabel: protocols = UNLABELED CIPSOv4 CALIPSO [ 4.998942] NetLabel: unlabeled traffic allowed by default [ 5.001549] nfc: nfc_init: NFC Core ver 0.1 [ 5.001549] NET: Registered protocol family 39 [ 5.001549] PCI: Using ACPI for IRQ routing [ 5.005939] clocksource: Switched to clocksource kvm-clock [ 5.331782] VFS: Disk quotas dquot_6.6.0 [ 5.334522] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes) [ 5.337855] FS-Cache: Loaded [ 5.340293] CacheFiles: Loaded [ 5.342072] TOMOYO: 2.6.0 [ 5.343045] Profile 0 (used by '<kernel>') is not defined. [ 5.345255] Userland tools for TOMOYO 2.6 must be installed and policy must be initialized. [ 5.348577] Please see https://tomoyo.osdn.jp/2.6/ for more information. [ 5.351443] Kernel panic - not syncing: STOP! [ 5.353059] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 5.12.0-rc2-syzkaller #0 [ 5.355230] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 5.355230] Call Trace: [ 5.355230] dump_stack+0x156/0x1a5 [ 5.355230] panic+0x2ea/0x687 [ 5.355230] ? __warn_printk+0xf3/0xf3 [ 5.355230] ? lock_release+0x47c/0x970 [ 5.355230] ? lock_downgrade+0x8a0/0x8a0 [ 5.355230] ? vprintk_func+0x76/0x180 [ 5.355230] tomoyo_check_profile.cold+0xc9/0xe9 [ 5.355230] tomoyo_load_builtin_policy+0x27b/0x2c2 [ 5.355230] ? smack_nf_ip_init+0x77/0x77 [ 5.355230] ? tomoyo_write_domain2+0x1b0/0x1b0 [ 5.355230] ? securityfs_create_dentry+0x13a/0x530 [ 5.355230] tomoyo_initerface_init+0x1b7/0x1c2 [ 5.355230] ? tomoyo_mm_init+0x257/0x257 [ 5.355230] do_one_initcall+0xef/0x640 [ 5.355230] ? perf_trace_initcall_level+0x3d0/0x3d0 [ 5.355230] ? __this_cpu_preempt_check+0x1d/0x30 [ 5.355230] ? lock_is_held_type+0x100/0x140 [ 5.355230] kernel_init_freeable+0x58a/0x5f9 [ 5.355230] ? rest_init+0x2e4/0x2e4 [ 5.355230] kernel_init+0x12/0x16c [ 5.355230] ret_from_fork+0x1f/0x30 [ 5.355230] Rebooting in 86400 seconds.. Error text is too large and was truncated, full error text is at: https://syzkaller.appspot.com/x/error.txt?x=17af81e1d00000 Tested on: commit: 6cc9e215 RDMA/nldev: Add copy-on-fork attribute to get sys.. git tree: git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma.git for-next kernel config: https://syzkaller.appspot.com/x/.config?x=d845af22fa44b27a dashboard link: https://syzkaller.appspot.com/bug?extid=69226cc89d87fd4f8f40 compiler:
