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Message-ID: <20211216102956.GC10708@xsang-OptiPlex-9020>
Date: Thu, 16 Dec 2021 18:29:56 +0800
From: kernel test robot <oliver.sang@...el.com>
To: "Eric W. Biederman" <ebiederm@...ssion.com>
Cc: LKML <linux-kernel@...r.kernel.org>, lkp@...ts.01.org,
lkp@...el.com
Subject: [kthread] 40966e316f: WARNING:at_kernel/sched/core.c:#sched_init
Greeting,
FYI, we noticed the following commit (built with gcc-9):
commit: 40966e316f86b8cfd83abd31ccb4df729309d3e7 ("kthread: Ensure struct kthread is present for all kthreads")
https://git.kernel.org/cgit/linux/kernel/git/ebiederm/user-namespace.git signal-for-v5.17
in testcase: trinity
version: trinity-x86_64-608712d8-1_20211207
with following parameters:
runtime: 300s
test-description: Trinity is a linux system call fuzz tester.
test-url: http://codemonkey.org.uk/projects/trinity/
on test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G
caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
If you fix the issue, kindly add following tag
Reported-by: kernel test robot <oliver.sang@...el.com>
[ 1.977577][ T0] WARNING: CPU: 0 PID: 0 at kernel/sched/core.c:9428 sched_init (kernel/sched/core.c:9428 (discriminator 1))
[ 1.978820][ T0] Modules linked in:
[ 1.979372][ T0] CPU: 0 PID: 0 Comm: swapper Not tainted 5.16.0-rc1-00016-g40966e316f86 #1
[ 1.980543][ T0] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
[ 1.981796][ T0] RIP: 0010:sched_init (kernel/sched/core.c:9428 (discriminator 1))
[ 1.982511][ T0] Code: 91 e8 9a 76 90 fb 48 c7 c7 a0 69 29 91 65 4c 8b 24 25 00 6d 02 00 4c 89 e6 e8 82 a7 7d fb 4c 89 e7 e8 fa 41 8e fb 84 c0 74 02 <0f> 0b 65 8b 35 75 47 ee 6d 65 48 8b 3c 25 00 6d 02 00 e8 d6 ed ff
All code
========
0: 91 xchg %eax,%ecx
1: e8 9a 76 90 fb callq 0xfffffffffb9076a0
6: 48 c7 c7 a0 69 29 91 mov $0xffffffff912969a0,%rdi
d: 65 4c 8b 24 25 00 6d mov %gs:0x26d00,%r12
14: 02 00
16: 4c 89 e6 mov %r12,%rsi
19: e8 82 a7 7d fb callq 0xfffffffffb7da7a0
1e: 4c 89 e7 mov %r12,%rdi
21: e8 fa 41 8e fb callq 0xfffffffffb8e4220
26: 84 c0 test %al,%al
28: 74 02 je 0x2c
2a:* 0f 0b ud2 <-- trapping instruction
2c: 65 8b 35 75 47 ee 6d mov %gs:0x6dee4775(%rip),%esi # 0x6dee47a8
33: 65 48 8b 3c 25 00 6d mov %gs:0x26d00,%rdi
3a: 02 00
3c: e8 .byte 0xe8
3d: d6 (bad)
3e: ed in (%dx),%eax
3f: ff .byte 0xff
Code starting with the faulting instruction
===========================================
0: 0f 0b ud2
2: 65 8b 35 75 47 ee 6d mov %gs:0x6dee4775(%rip),%esi # 0x6dee477e
9: 65 48 8b 3c 25 00 6d mov %gs:0x26d00,%rdi
10: 02 00
12: e8 .byte 0xe8
13: d6 (bad)
14: ed in (%dx),%eax
15: ff .byte 0xff
[ 1.985437][ T0] RSP: 0000:ffffffff90c07ed8 EFLAGS: 00010002
[ 1.986298][ T0] RAX: 0000000000000001 RBX: ffff88839d737a40 RCX: 0000000000000000
[ 1.987402][ T0] RDX: 1ffffffff2184597 RSI: ffffffff9027c180 RDI: ffffffff90c22cb0
[ 1.988535][ T0] RBP: ffffffff90c07f20 R08: ffffffff920edb2b R09: ffffffff8d800107
[ 1.989665][ T0] R10: ffffffff920edb2b R11: ffffffff8d800107 R12: ffffffff90c22280
[ 1.990816][ T0] R13: 0000000000000002 R14: ffff88839d738418 R15: 00000000000f4240
[ 1.991938][ T0] FS: 0000000000000000(0000) GS:ffff88839d600000(0000) knlGS:0000000000000000
[ 1.993136][ T0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1.994074][ T0] CR2: ffff88843ffff000 CR3: 0000000375c14000 CR4: 00000000000406b0
[ 1.995185][ T0] Call Trace:
[ 1.995658][ T0] <TASK>
[ 1.996073][ T0] start_kernel (arch/x86/include/asm/irqflags.h:29 arch/x86/include/asm/irqflags.h:70 init/main.c:996)
[ 1.996726][ T0] secondary_startup_64_no_verify (arch/x86/kernel/head_64.S:283)
[ 1.997625][ T0] </TASK>
[ 1.998051][ T0] ---[ end trace 9b598a628b1de811 ]---
[ 2.000123][ T0] rcu: Hierarchical RCU implementation.
[ 2.000911][ T0] rcu: RCU restricting CPUs from NR_CPUS=8192 to nr_cpu_ids=2.
[ 2.001949][ T0] RCU CPU stall warnings timeout set to 100 (rcu_cpu_stall_timeout).
[ 2.003115][ T0] Trampoline variant of Tasks RCU enabled.
[ 2.003927][ T0] Rude variant of Tasks RCU enabled.
[ 2.004696][ T0] Tracing variant of Tasks RCU enabled.
[ 2.005476][ T0] rcu: RCU calculated value of scheduler-enlistment delay is 100 jiffies.
[ 2.006689][ T0] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2
[ 2.049794][ T0] NR_IRQS: 524544, nr_irqs: 440, preallocated irqs: 16
[ 2.057841][ T0] Console: colour VGA+ 80x25
[ 2.141394][ T0] printk: console [tty0] enabled
[ 2.142437][ T0] printk: console [ttyS0] enabled
[ 2.144033][ T0] printk: bootconsole [earlyser0] disabled
[ 2.145973][ T0] ACPI: Core revision 20210930
[ 2.147506][ T0] clocksource: hpet: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604467 ns
[ 2.149537][ T0] APIC: Switch to symmetric I/O mode setup
[ 2.150977][ T0] x2apic enabled
[ 2.152043][ T0] Switched APIC routing to physical x2apic.
[ 2.153198][ T0] masked ExtINT on CPU#0
[ 2.154883][ T0] ENABLING IO-APIC IRQs
[ 2.155737][ T0] init IO_APIC IRQs
[ 2.156553][ T0] apic 0 pin 0 not connected
[ 2.157517][ T0] IOAPIC[0]: Preconfigured routing entry (0-1 -> IRQ 1 Level:0 ActiveLow:0)
[ 2.159208][ T0] IOAPIC[0]: Preconfigured routing entry (0-2 -> IRQ 0 Level:0 ActiveLow:0)
[ 2.160960][ T0] IOAPIC[0]: Preconfigured routing entry (0-3 -> IRQ 3 Level:0 ActiveLow:0)
[ 2.162643][ T0] IOAPIC[0]: Preconfigured routing entry (0-4 -> IRQ 4 Level:0 ActiveLow:0)
[ 2.164329][ T0] IOAPIC[0]: Preconfigured routing entry (0-5 -> IRQ 5 Level:1 ActiveLow:0)
[ 2.166123][ T0] IOAPIC[0]: Preconfigured routing entry (0-6 -> IRQ 6 Level:0 ActiveLow:0)
[ 2.167935][ T0] IOAPIC[0]: Preconfigured routing entry (0-7 -> IRQ 7 Level:0 ActiveLow:0)
[ 2.169686][ T0] IOAPIC[0]: Preconfigured routing entry (0-8 -> IRQ 8 Level:0 ActiveLow:0)
[ 2.171571][ T0] IOAPIC[0]: Preconfigured routing entry (0-9 -> IRQ 9 Level:1 ActiveLow:0)
[ 2.173392][ T0] IOAPIC[0]: Preconfigured routing entry (0-10 -> IRQ 10 Level:1 ActiveLow:0)
[ 2.175323][ T0] IOAPIC[0]: Preconfigured routing entry (0-11 -> IRQ 11 Level:1 ActiveLow:0)
[ 2.177186][ T0] IOAPIC[0]: Preconfigured routing entry (0-12 -> IRQ 12 Level:0 ActiveLow:0)
[ 2.179103][ T0] IOAPIC[0]: Preconfigured routing entry (0-13 -> IRQ 13 Level:0 ActiveLow:0)
[ 2.180864][ T0] IOAPIC[0]: Preconfigured routing entry (0-14 -> IRQ 14 Level:0 ActiveLow:0)
[ 2.182756][ T0] IOAPIC[0]: Preconfigured routing entry (0-15 -> IRQ 15 Level:0 ActiveLow:0)
[ 2.184563][ T0] apic 0 pin 16 not connected
[ 2.185577][ T0] apic 0 pin 17 not connected
[ 2.186572][ T0] apic 0 pin 18 not connected
[ 2.187580][ T0] apic 0 pin 19 not connected
[ 2.188595][ T0] apic 0 pin 20 not connected
[ 2.189599][ T0] apic 0 pin 21 not connected
[ 2.190565][ T0] apic 0 pin 22 not connected
[ 2.191561][ T0] apic 0 pin 23 not connected
[ 2.192740][ T0] ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1
[ 2.194099][ T0] clocksource: tsc-early: mask: 0xffffffffffffffff max_cycles: 0x2113883cfc4, max_idle_ns: 440795203346 ns
[ 2.196354][ T0] Calibrating delay loop (skipped) preset value.. 4589.33 BogoMIPS (lpj=2294668)
[ 2.197346][ T0] pid_max: default: 32768 minimum: 301
[ 2.199643][ T0] LSM: Security Framework initializing
[ 2.200371][ T0] Yama: becoming mindful.
[ 2.201599][ T0] Mount-cache hash table entries: 32768 (order: 6, 262144 bytes, linear)
[ 2.202407][ T0] Mountpoint-cache hash table entries: 32768 (order: 6, 262144 bytes, linear)
Poking KASLR using RDTSC...
[ 2.206585][ T0] Last level iTLB entries: 4KB 0, 2MB 0, 4MB 0
[ 2.207343][ T0] Last level dTLB entries: 4KB 0, 2MB 0, 4MB 0, 1GB 0
[ 2.208360][ T0] Spectre V1 : Mitigation: usercopy/swapgs barriers and __user pointer sanitization
[ 2.209355][ T0] Spectre V2 : Mitigation: Full generic retpoline
[ 2.210343][ T0] Spectre V2 : Spectre v2 / SpectreRSB mitigation: Filling RSB on context switch
[ 2.211344][ T0] Speculative Store Bypass: Vulnerable
[ 2.212362][ T0] MDS: Vulnerable: Clear CPU buffers attempted, no microcode
[ 2.230374][ T0] Freeing SMP alternatives memory: 40K
[ 2.231962][ T1] smpboot: CPU0: Intel Xeon E312xx (Sandy Bridge) (family: 0x6, model: 0x2a, stepping: 0x1)
[ 2.233793][ T1] Performance Events: unsupported p6 CPU model 42 no PMU driver, software events only.
[ 2.234580][ T1] rcu: Hierarchical SRCU implementation.
[ 2.238888][ T1] NMI watchdog: Perf NMI watchdog permanently disabled
[ 2.239965][ T1] smp: Bringing up secondary CPUs ...
[ 2.242120][ T1] x86: Booting SMP configuration:
[ 2.242355][ T1] .... node #0, CPUs: #1
[ 0.140853][ T0] kvm-clock: cpu 1, msr 377449041, secondary cpu clock
[ 0.140853][ T0] masked ExtINT on CPU#1
[ 0.140853][ T0] smpboot: CPU 1 Converting physical 0 to logical die 1
[ 2.247421][ T17] kvm-guest: stealtime: cpu 1, msr 39d727180
[ 2.248414][ T1] smp: Brought up 1 node, 2 CPUs
[ 2.249352][ T1] smpboot: Max logical packages: 2
[ 2.250010][ T1] smpboot: Total of 2 processors activated (9178.67 BogoMIPS)
[ 2.501557][ T22] node 0 deferred pages initialised in 251ms
[ 2.633580][ T1] allocated 201326592 bytes of page_ext
[ 2.634559][ T1] Node 0, zone DMA: page owner found early allocated 0 pages
[ 2.637514][ T1] Node 0, zone DMA32: page owner found early allocated 0 pages
[ 2.665731][ T1] Node 0, zone Normal: page owner found early allocated 50302 pages
[ 2.666834][ T1] devtmpfs: initialized
[ 2.667853][ T1] x86/mm: Memory block size: 128MB
[ 2.703773][ T1] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 1911260446275000 ns
[ 2.704375][ T1] futex hash table entries: 512 (order: 3, 32768 bytes, linear)
[ 2.705771][ T1] pinctrl core: initialized pinctrl subsystem
[ 2.708068][ T1] NET: Registered PF_NETLINK/PF_ROUTE protocol family
[ 2.710285][ T1] audit: initializing netlink subsys (disabled)
[ 2.710675][ T27] audit: type=2000 audit(1639545078.756:1): state=initialized audit_enabled=0 res=1
[ 2.712593][ T1] thermal_sys: Registered thermal governor 'fair_share'
[ 2.712599][ T1] thermal_sys: Registered thermal governor 'bang_bang'
[ 2.713348][ T1] thermal_sys: Registered thermal governor 'step_wise'
[ 2.714348][ T1] thermal_sys: Registered thermal governor 'user_space'
[ 2.715474][ T1] cpuidle: using governor menu
[ 2.718322][ T1] acpiphp: ACPI Hot Plug PCI Controller Driver version: 0.5
[ 2.719335][ T1] PCI: Using configuration type 1 for base access
[ 2.762444][ T1] kprobes: kprobe jump-optimization is enabled. All kprobes are optimized if possible.
[ 2.764642][ T1] HugeTLB registered 2.00 MiB page size, pre-allocated 0 pages
[ 2.767543][ T1] cryptd: max_cpu_qlen set to 1000
To reproduce:
# build kernel
cd linux
cp config-5.16.0-rc1-00016-g40966e316f86 .config
make HOSTCC=gcc-9 CC=gcc-9 ARCH=x86_64 olddefconfig prepare modules_prepare bzImage modules
make HOSTCC=gcc-9 CC=gcc-9 ARCH=x86_64 INSTALL_MOD_PATH=<mod-install-dir> modules_install
cd <mod-install-dir>
find lib/ | cpio -o -H newc --quiet | gzip > modules.cgz
git clone https://github.com/intel/lkp-tests.git
cd lkp-tests
bin/lkp qemu -k <bzImage> -m modules.cgz job-script # job-script is attached in this email
# if come across any failure that blocks the test,
# please remove ~/.lkp and /lkp dir to run from a clean state.
---
0DAY/LKP+ Test Infrastructure Open Source Technology Center
https://lists.01.org/hyperkitty/list/lkp@lists.01.org Intel Corporation
Thanks,
Oliver Sang
View attachment "config-5.16.0-rc1-00016-g40966e316f86" of type "text/plain" (177692 bytes)
View attachment "job-script" of type "text/plain" (4633 bytes)
Download attachment "dmesg.xz" of type "application/x-xz" (18948 bytes)
View attachment "trinity" of type "text/plain" (3856 bytes)
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