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Date: Tue, 25 Jan 2022 10:55:24 +0800
From: kernel test robot <oliver.sang@...el.com>
To: Imran Khan <imran.f.khan@...cle.com>
Cc: 0day robot <lkp@...el.com>, LKML <linux-kernel@...r.kernel.org>,
lkp@...ts.01.org, tj@...nel.org, gregkh@...uxfoundation.org
Subject: [kernfs] 8652224976: WARNING:at_kernel/locking/rwsem.c:#up_write
Greeting,
FYI, we noticed the following commit (built with gcc-9):
commit: 86522249760a6c44da99474289f00fb302a8c393 ("[PATCH v3 2/2] kernfs: Reduce contention around global per-fs kernfs_rwsem.")
url: https://github.com/0day-ci/linux/commits/Imran-Khan/kernfs-use-hashed-mutex-and-spinlock-in-place-of-global-ones/20220113-184429
patch link: https://lore.kernel.org/lkml/20220113104259.1584491-3-imran.f.khan@oracle.com
in testcase: boot
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>
[ 3.958358][ T0] WARNING: CPU: 0 PID: 0 at kernel/locking/rwsem.c:1309 up_write (kernel/locking/rwsem.c:1309 kernel/locking/rwsem.c:1567)
[ 3.959313][ T0] Modules linked in:
[ 3.960313][ T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.16.0-next-20220111-00002-g86522249760a #1
[ 3.961315][ T0] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
[ 3.962312][ T0] RIP: 0010:up_write (kernel/locking/rwsem.c:1309 kernel/locking/rwsem.c:1567)
[ 3.963311][ T0] Code: 80 3c 02 00 0f 85 8b 01 00 00 ff 34 24 48 8b 55 00 4d 89 f9 4d 89 f0 48 c7 c6 20 79 0c 9d 48 c7 c7 60 79 0c 9d e8 70 89 5b 02 <0f> 0b 59 e9 ba fe ff ff 48 89 df e8 bc c6 63 00 e9 8c fd ff ff 4c
All code
========
0: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1)
4: 0f 85 8b 01 00 00 jne 0x195
a: ff 34 24 pushq (%rsp)
d: 48 8b 55 00 mov 0x0(%rbp),%rdx
11: 4d 89 f9 mov %r15,%r9
14: 4d 89 f0 mov %r14,%r8
17: 48 c7 c6 20 79 0c 9d mov $0xffffffff9d0c7920,%rsi
1e: 48 c7 c7 60 79 0c 9d mov $0xffffffff9d0c7960,%rdi
25: e8 70 89 5b 02 callq 0x25b899a
2a:* 0f 0b ud2 <-- trapping instruction
2c: 59 pop %rcx
2d: e9 ba fe ff ff jmpq 0xfffffffffffffeec
32: 48 89 df mov %rbx,%rdi
35: e8 bc c6 63 00 callq 0x63c6f6
3a: e9 8c fd ff ff jmpq 0xfffffffffffffdcb
3f: 4c rex.WR
Code starting with the faulting instruction
===========================================
0: 0f 0b ud2
2: 59 pop %rcx
3: e9 ba fe ff ff jmpq 0xfffffffffffffec2
8: 48 89 df mov %rbx,%rdi
b: e8 bc c6 63 00 callq 0x63c6cc
10: e9 8c fd ff ff jmpq 0xfffffffffffffda1
15: 4c rex.WR
[ 3.965308][ T0] RSP: 0000:ffffffff9e007bb0 EFLAGS: 00010286
[ 3.966309][ T0] RAX: 0000000000000000 RBX: ffffffff9efe76e8 RCX: 0000000000000000
[ 3.967311][ T0] RDX: c0000000ffff7fff RSI: ffffffff9e0078d0 RDI: fffffbfff3c00f68
[ 3.968311][ T0] RBP: ffffffffa0a80140 R08: 0000000000000000 R09: fffffbfff3c00f04
[ 3.969308][ T0] R10: ffffffff9e00781f R11: fffffbfff3c00f03 R12: ffffffffa0a80148
[ 3.970310][ T0] R13: ffffffffa0a801a8 R14: ffffffff9e038500 R15: ffffffff9e038500
[ 3.971309][ T0] FS: 0000000000000000(0000) GS:ffff88839d200000(0000) knlGS:0000000000000000
[ 3.972315][ T0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3.973313][ T0] CR2: ffff88843ffff000 CR3: 0000000111e2a000 CR4: 00000000000006b0
[ 3.974314][ T0] Call Trace:
[ 3.975314][ T0] <TASK>
[ 3.976327][ T0] kernfs_add_one (fs/kernfs/dir.c:761)
[ 3.977311][ T0] ? kernfs_get (fs/kernfs/dir.c:513)
[ 3.978323][ T0] kernfs_create_dir_ns (fs/kernfs/dir.c:1008)
[ 3.979317][ T0] sysfs_create_dir_ns (fs/sysfs/dir.c:61)
[ 3.980314][ T0] ? kernfs_activate (fs/kernfs/dir.c:1316)
[ 3.981314][ T0] ? sysfs_create_mount_point (fs/sysfs/dir.c:41)
[ 3.982312][ T0] ? rcu_read_lock_sched_held (kernel/rcu/update.c:123)
[ 3.983313][ T0] ? rcu_read_lock_bh_held (kernel/rcu/update.c:120)
[ 3.984318][ T0] ? rcu_read_lock_held_common (kernel/rcu/update.c:104)
[ 3.985336][ T0] ? rcu_read_lock_sched_held (kernel/rcu/update.c:123)
[ 3.986323][ T0] kobject_add_internal (lib/kobject.c:89 lib/kobject.c:255)
[ 3.987340][ T0] kobject_add (lib/kobject.c:390 lib/kobject.c:442)
[ 3.988320][ T0] ? kobject_add_internal (lib/kobject.c:428)
[ 3.989322][ T0] ? kasan_unpoison (mm/kasan/shadow.c:108 mm/kasan/shadow.c:142)
[ 3.990310][ T0] ? __kasan_slab_alloc (mm/kasan/common.c:431 mm/kasan/common.c:469)
[ 3.991327][ T0] kobject_create_and_add (lib/kobject.c:815)
[ 3.992314][ T0] mnt_init (fs/namespace.c:4372)
[ 3.993319][ T0] ? init_fs_namespace_sysctls (fs/namespace.c:4346)
[ 3.994309][ T0] ? _raw_spin_unlock_irqrestore (arch/x86/include/asm/irqflags.h:45 arch/x86/include/asm/irqflags.h:80 arch/x86/include/asm/irqflags.h:138 include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194)
[ 3.995308][ T0] ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:50 (discriminator 22))
[ 3.996312][ T0] ? _raw_spin_unlock_irqrestore (arch/x86/include/asm/irqflags.h:45 arch/x86/include/asm/irqflags.h:80 arch/x86/include/asm/irqflags.h:138 include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194)
[ 3.997319][ T0] vfs_caches_init (fs/dcache.c:3295)
[ 3.999313][ T0] start_kernel (init/main.c:1123)
[ 4.000320][ T0] secondary_startup_64_no_verify (arch/x86/kernel/head_64.S:300)
[ 4.001349][ T0] </TASK>
[ 4.002309][ T0] irq event stamp: 2311
[ 4.003308][ T0] hardirqs last enabled at (2321): __up_console_sem (arch/x86/include/asm/irqflags.h:45 (discriminator 1) arch/x86/include/asm/irqflags.h:80 (discriminator 1) arch/x86/include/asm/irqflags.h:138 (discriminator 1) kernel/printk/printk.c:256 (discriminator 1))
[ 4.004313][ T0] hardirqs last disabled at (2330): __up_console_sem (kernel/printk/printk.c:254 (discriminator 1))
[ 4.005309][ T0] softirqs last enabled at (0): 0x0
[ 4.006314][ T0] softirqs last disabled at (0): 0x0
[ 4.007312][ T0] ---[ end trace 0000000000000000 ]---
Poking KASLR using RDTSC...
[ 4.013584][ T0] Last level iTLB entries: 4KB 0, 2MB 0, 4MB 0
[ 4.014305][ T0] Last level dTLB entries: 4KB 0, 2MB 0, 4MB 0, 1GB 0
[ 4.015329][ T0] Spectre V1 : Mitigation: usercopy/swapgs barriers and __user pointer sanitization
[ 4.016318][ T0] Spectre V2 : Mitigation: Full generic retpoline
[ 4.017305][ T0] Spectre V2 : Spectre v2 / SpectreRSB mitigation: Filling RSB on context switch
[ 4.018307][ T0] Speculative Store Bypass: Vulnerable
[ 4.019337][ T0] MDS: Vulnerable: Clear CPU buffers attempted, no microcode
[ 4.028751][ T0] Freeing SMP alternatives memory: 40K
[ 4.030698][ T1] smpboot: CPU0: Intel Xeon E312xx (Sandy Bridge) (family: 0x6, model: 0x2a, stepping: 0x1)
[ 4.032896][ T1] cblist_init_generic: Setting adjustable number of callback queues.
[ 4.033312][ T1] cblist_init_generic: Setting shift to 1 and lim to 1.
[ 4.034658][ T1] cblist_init_generic: Setting shift to 1 and lim to 1.
[ 4.035537][ T1] Running RCU-tasks wait API self tests
[ 4.036793][ T1] Performance Events: unsupported p6 CPU model 42 no PMU driver, software events only.
[ 4.037688][ T1] rcu: Hierarchical SRCU implementation.
[ 4.043395][ T10] Callback from call_rcu_tasks_trace() invoked.
[ 4.045071][ T1] NMI watchdog: Perf NMI watchdog permanently disabled
[ 4.046006][ T1] smp: Bringing up secondary CPUs ...
[ 4.047886][ T1] x86: Booting SMP configuration:
[ 4.048326][ T1] .... node #0, CPUs: #1
[ 0.245211][ T0] masked ExtINT on CPU#1
[ 0.245211][ T0] smpboot: CPU 1 Converting physical 0 to logical die 1
[ 4.078488][ T1] smp: Brought up 1 node, 2 CPUs
[ 4.079334][ T1] smpboot: Max logical packages: 2
[ 4.080316][ T1] smpboot: Total of 2 processors activated (9043.99 BogoMIPS)
[ 4.147690][ T9] Callback from call_rcu_tasks_rude() invoked.
[ 4.380370][ T21] node 0 deferred pages initialised in 297ms
[ 4.513597][ T1] allocated 201326592 bytes of page_ext
[ 4.514660][ T1] Node 0, zone DMA: page owner found early allocated 0 pages
[ 4.521659][ T1] Node 0, zone DMA32: page owner found early allocated 0 pages
[ 4.562068][ T1] Node 0, zone Normal: page owner found early allocated 50463 pages
[ 4.563464][ T1] devtmpfs: initialized
[ 4.565474][ T1] x86/mm: Memory block size: 128MB
[ 4.621220][ T1] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 1911260446275000 ns
[ 4.621383][ T1] futex hash table entries: 512 (order: 4, 65536 bytes, linear)
[ 4.623068][ T1] pinctrl core: initialized pinctrl subsystem
[ 4.625838][ T1] NET: Registered PF_NETLINK/PF_ROUTE protocol family
[ 4.629511][ T1] audit: initializing netlink subsys (disabled)
[ 4.633582][ T27] audit: type=2000 audit(1643043463.357:1): state=initialized audit_enabled=0 res=1
[ 4.633893][ T1] thermal_sys: Registered thermal governor 'fair_share'
[ 4.634312][ T1] thermal_sys: Registered thermal governor 'bang_bang'
[ 4.635316][ T1] thermal_sys: Registered thermal governor 'step_wise'
[ 4.636315][ T1] thermal_sys: Registered thermal governor 'user_space'
[ 4.637493][ T1] cpuidle: using governor menu
[ 4.640928][ T1] acpiphp: ACPI Hot Plug PCI Controller Driver version: 0.5
[ 4.642786][ T1] PCI: Using configuration type 1 for base access
[ 4.717204][ T1] kprobes: kprobe jump-optimization is enabled. All kprobes are optimized if possible.
[ 4.719606][ T1] HugeTLB registered 2.00 MiB page size, pre-allocated 0 pages
[ 4.723437][ T1] cryptd: max_cpu_qlen set to 1000
[ 4.728040][ T1] ACPI: Added _OSI(Module Device)
[ 4.728315][ T1] ACPI: Added _OSI(Processor Device)
[ 4.729315][ T1] ACPI: Added _OSI(3.0 _SCP Extensions)
[ 4.730319][ T1] ACPI: Added _OSI(Processor Aggregator Device)
[ 4.731351][ T1] ACPI: Added _OSI(Linux-Dell-Video)
[ 4.732334][ T1] ACPI: Added _OSI(Linux-Lenovo-NV-HDMI-Audio)
[ 4.733338][ T1] ACPI: Added _OSI(Linux-HPI-Hybrid-Graphics)
[ 4.798850][ T1] ACPI: 1 ACPI AML tables successfully acquired and loaded
[ 4.814463][ T1] ACPI: Interpreter enabled
[ 4.815609][ T1] ACPI: PM: (supports S0 S3 S4 S5)
[ 4.816319][ T1] ACPI: Using IOAPIC for interrupt routing
[ 4.817654][ T1] PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug
[ 4.822488][ T1] ACPI: Enabled 2 GPEs in block 00 to 0F
[ 4.947161][ T1] ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-ff])
[ 4.947405][ T1] acpi PNP0A03:00: _OSC: OS supports [ASPM ClockPM Segments MSI HPX-Type3]
[ 4.948319][ T1] acpi PNP0A03:00: _OSC: not requesting OS control; OS requires [ExtendedConfig ASPM ClockPM MSI]
[ 4.949841][ T1] acpi PNP0A03:00: fail to add MMCONFIG information, can't access extended PCI configuration space under this bridge.
[ 4.962351][ T1] acpiphp: Slot [3] registered
[ 4.963771][ T1] acpiphp: Slot [4] registered
[ 4.964799][ T1] acpiphp: Slot [5] registered
[ 4.965783][ T1] acpiphp: Slot [6] registered
[ 4.966822][ T1] acpiphp: Slot [7] registered
[ 4.967783][ T1] acpiphp: Slot [8] registered
[ 4.968810][ T1] acpiphp: Slot [9] registered
[ 4.969785][ T1] acpiphp: Slot [10] registered
[ 4.970792][ T1] acpiphp: Slot [11] registered
To reproduce:
# build kernel
cd linux
cp config-5.16.0-next-20220111-00002-g86522249760a .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-next-20220111-00002-g86522249760a" of type "text/plain" (178349 bytes)
View attachment "job-script" of type "text/plain" (4814 bytes)
Download attachment "dmesg.xz" of type "application/x-xz" (15908 bytes)
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