linux-kernel - [syzbot] linux-next boot error: WARNING in sched

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Message-ID: <000000000000929af305d3aa2864@google.com>
Date:   Tue, 21 Dec 2021 08:04:22 -0800
From:   syzbot <syzbot+7b9f3876a92c5b3116c4@...kaller.appspotmail.com>
To:     linux-kernel@...r.kernel.org, linux-next@...r.kernel.org,
        sfr@...b.auug.org.au, syzkaller-bugs@...glegroups.com
Subject: [syzbot] linux-next boot error: WARNING in sched_init

Hello,

syzbot found the following issue on:

HEAD commit:    2850c2311ef4 Add linux-next specific files for 20211221
git tree:       linux-next
console output: https://syzkaller.appspot.com/x/log.txt?x=11db7399b00000
kernel config:  https://syzkaller.appspot.com/x/.config?x=9c5fd30becd44062
dashboard link: https://syzkaller.appspot.com/bug?extid=7b9f3876a92c5b3116c4
compiler:       gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+7b9f3876a92c5b3116c4@...kaller.appspotmail.com

  DMA32    [mem 0x0000000001000000-0x00000000ffffffff]
  Normal   [mem 0x0000000100000000-0x000000023fffffff]
  Device   empty
Movable zone start for each node
Early memory node ranges
  node   0: [mem 0x0000000000001000-0x000000000009efff]
  node   0: [mem 0x0000000000100000-0x00000000bfffcfff]
  node   0: [mem 0x0000000100000000-0x000000013fffffff]
  node   1: [mem 0x0000000140000000-0x000000023fffffff]
Initmem setup node 0 [mem 0x0000000000001000-0x000000013fffffff]
Initmem setup node 1 [mem 0x0000000140000000-0x000000023fffffff]
On node 0, zone DMA: 1 pages in unavailable ranges
On node 0, zone DMA: 97 pages in unavailable ranges
On node 0, zone Normal: 3 pages in unavailable ranges
kasan: KernelAddressSanitizer initialized
ACPI: PM-Timer IO Port: 0xb008
ACPI: LAPIC_NMI (acpi_id[0xff] dfl dfl lint[0x1])
IOAPIC[0]: apic_id 0, version 17, address 0xfec00000, GSI 0-23
ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 high level)
ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 high level)
ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 high level)
ACPI: Using ACPI (MADT) for SMP configuration information
smpboot: Allowing 2 CPUs, 0 hotplug CPUs
PM: hibernation: Registered nosave memory: [mem 0x00000000-0x00000fff]
PM: hibernation: Registered nosave memory: [mem 0x0009f000-0x0009ffff]
PM: hibernation: Registered nosave memory: [mem 0x000a0000-0x000effff]
PM: hibernation: Registered nosave memory: [mem 0x000f0000-0x000fffff]
PM: hibernation: Registered nosave memory: [mem 0xbfffd000-0xbfffffff]
PM: hibernation: Registered nosave memory: [mem 0xc0000000-0xfffbbfff]
PM: hibernation: Registered nosave memory: [mem 0xfffbc000-0xffffffff]
[mem 0xc0000000-0xfffbbfff] available for PCI devices
Booting paravirtualized kernel on KVM
clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
setup_percpu: NR_CPUS:8 nr_cpumask_bits:8 nr_cpu_ids:2 nr_node_ids:2
percpu: Embedded 69 pages/cpu s242952 r8192 d31480 u1048576
kvm-guest: stealtime: cpu 0, msr b9c27440
kvm-guest: PV spinlocks enabled
PV qspinlock hash table entries: 256 (order: 0, 4096 bytes, linear)
Fallback order for Node 0: 0 1 
Fallback order for Node 1: 1 0 
Built 2 zonelists, mobility grouping on.  Total pages: 2064125
Policy zone: Normal
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 no_hash_pointers page_owner=on sysctl.vm.nr_hugepages=4 sysctl.vm.nr_overcommit_hugepages=4 secretmem.enable=1 root=/dev/sda console=ttyS0 vsyscall=native numa=fake=2 kvm-intel.nested=1 spec_store_bypass_disable=prctl nopcid vivid.n_devs=16 vivid.multiplanar=1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2 netrom.nr_ndevs=16 rose.rose_ndevs=16 dummy_hcd.num=8 watchdog_thresh=55 workqueue.watchdog_thresh=140 sysctl.net.core.netdev_unregister_timeout_secs=140 panic_on_warn=1 BOOT_IMAGE=/boot/bzImage root=/dev/sda1 console=ttyS0
Unknown kernel command line parameters "spec_store_bypass_disable=prctl BOOT_IMAGE=/boot/bzImage", will be passed to user space.
mem auto-init: stack:off, heap alloc:on, heap free:off
Stack Depot allocating hash table with memblock_alloc
Memory: 6842036K/8388204K available (139293K kernel code, 34117K rwdata, 29684K rodata, 4556K init, 25096K bss, 1545912K reserved, 0K cma-reserved)
SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=2
------------[ cut here ]------------
WARNING: CPU: 0 PID: 0 at kernel/sched/core.c:9469 sched_init+0xcc3/0xd8d kernel/sched/core.c:9469
Modules linked in:
CPU: 0 PID: 0 Comm: swapper Not tainted 5.16.0-rc6-next-20211221-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:sched_init+0xcc3/0xd8d kernel/sched/core.c:9469
Code: ff 05 86 95 f3 fc 65 48 8b 2c 25 00 70 02 00 48 c7 c7 c0 27 cb 8b 48 89 ee e8 5e 82 5d f2 48 89 ef e8 b6 7d 76 f2 84 c0 74 02 <0f> 0b e8 2b db 7e fa 89 c6 65 48 8b 3c 25 00 70 02 00 e8 a6 eb ff
RSP: 0000:ffffffff8b807ee0 EFLAGS: 00010002
RAX: 0000000000000001 RBX: 0000000000400000 RCX: 0000000000000000
RDX: ffffffff8b8bc6c0 RSI: ffffffff814e1225 RDI: ffffffff8b8bcd58
RBP: ffffffff8b8bc6c0 R08: 0000000000000002 R09: 0000000000000000
R10: fffffbfff1895c20 R11: ffffffff81000108 R12: 0000000000000008
R13: 0000000000000003 R14: ffff8880b9d3a698 R15: 000000000007a120
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff88823ffff000 CR3: 000000000b88e000 CR4: 00000000000406b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 start_kernel+0x198/0x49b init/main.c:1000
 secondary_startup_64_no_verify+0xc3/0xcb
 </TASK>


---
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