linux-kernel - [lkp] [chrdev] af427b8e3a: kmsg.ide-tape:Failed_to_register_chrdev

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Date:	Wed, 23 Mar 2016 09:52:42 +0800
From:	kernel test robot <xiaolong.ye@...el.com>
To:	Linus Walleij <linus.walleij@...aro.org>
Cc:	Ying Huang <ying.huang@...ux.intel.com>,
	Alan Cox <alan@...ux.intel.com>, Arnd Bergmann <arnd@...db.de>,
	LKML <linux-kernel@...r.kernel.org>, lkp@...org
Subject: [lkp] [chrdev] af427b8e3a:
 kmsg.ide-tape:Failed_to_register_chrdev_interface

FYI, we noticed the below changes on

https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio.git chrdev-warn
commit af427b8e3a4e1fc4f7e893a617acf9520cdd616c ("chrdev: allocate dynamic chardevs in all unused holes")

As below, the log "ide-tape: Failed to register chrdev interface" showed with your commit.

[    5.180939] hdc: QEMU DVD-ROM, ATAPI CD/DVD-ROM drive
[    5.853022] hdc: host max PIO4 wanted PIO255(auto-tune) selected PIO0
[    5.854273] hdc: MWDMA2 mode selected
[    5.855154] ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
[    5.856004] ide1 at 0x170-0x177,0x376 on irq 15
[    5.862154] ide-gd driver 1.18
[    5.862765] ide-tape: Failed to register chrdev interface
[    5.863789] Loading iSCSI transport class v2.0-870.
[    5.881544] fnic: Cisco FCoE HBA Driver, ver 1.6.0.17a
[    5.882531] fnic: Successfully Initialized Trace Buffer
[    5.884415] fnic: Successfully Initialized FC_CTLR Trace Buffer
[    5.894058] Loading Adaptec I2O RAID: Version 2.4 Build 5go
[    5.895042] Detecting Adaptec I2O RAID controllers...
[    5.895900] Adaptec aacraid driver 1.2-1[41010]-ms
[    5.897116] qla2xxx [0000:00:00.0]-0005: : QLogic Fibre Channel HBA Driver: 8.07.00.26-k.
[    5.898534] csiostor: Chelsio FCoE driver 1.0.0
[    5.899479] megasas: 06.808.16.00-rc1
[    5.900172] mpt3sas version 09.102.00.00 loaded
[    5.901225] 3ware 9000 Storage Controller device driver for Linux v2.26.02.014.
[    5.902498] ipr: IBM Power RAID SCSI Device Driver version: 2.6.3 (October 17, 2015)
[    5.903896] libcxgbi:libcxgbi_init_module: Chelsio iSCSI driver library libcxgbi v0.9.1-ko (Apr. 2015)
[    5.905462] libcxgbi:libcxgbi_init_module: tag itt 0x1fff, 13 bits, age 0xf, 4 bits.
[    5.919807] libcxgbi:ddp_setup_host_page_size: system PAGE 4096, ddp idx 0.
[    5.920991] Chelsio T3 iSCSI Driver cxgb3i v2.0.1-ko (Apr. 2015)





FYI, raw QEMU command line is:

	qemu-system-x86_64 -enable-kvm -cpu SandyBridge -kernel /pkg/linux/x86_64-acpi-redef/gcc-5/af427b8e3a4e1fc4f7e893a617acf9520cdd616c/vmlinuz-4.5.0-rc2-00207-gaf427b8 -append 'root=/dev/ram0 user=lkp job=/lkp/scheduled/vm-kbuild-yocto-x86_64-28/bisect_boot-1-yocto-minimal-x86_64.cgz-x86_64-acpi-redef-af427b8e3a4e1fc4f7e893a617acf9520cdd616c-20160319-21157-140zqnh-0.yaml ARCH=x86_64 kconfig=x86_64-acpi-redef branch=linux-devel/devel-catchup-201603190348 commit=af427b8e3a4e1fc4f7e893a617acf9520cdd616c BOOT_IMAGE=/pkg/linux/x86_64-acpi-redef/gcc-5/af427b8e3a4e1fc4f7e893a617acf9520cdd616c/vmlinuz-4.5.0-rc2-00207-gaf427b8 max_uptime=600 RESULT_ROOT=/result/boot/1/vm-kbuild-yocto-x86_64/yocto-minimal-x86_64.cgz/x86_64-acpi-redef/gcc-5/af427b8e3a4e1fc4f7e893a617acf9520cdd616c/0 LKP_SERVER=inn earlyprintk=ttyS0,115200 systemd.log_level=err debug apic=debug sysrq_always_enabled rcupdate.rcu_cpu_stall_timeout=100 panic=-1 softlockup_panic=1 nmi_watchdog=panic oops=panic load_ramdisk=2 prompt_ramdisk=0 console=ttyS0,115200 console=tty0 vga=normal rw ip=::::vm-kbuild-yocto-x86_64-28::dhcp drbd.minor_count=8'  -initrd /fs/sdc1/initrd-vm-kbuild-yocto-x86_64-28 -m 320 -smp 1 -device e1000,netdev=net0 -netdev user,id=net0 -boot order=nc -no-reboot -watchdog i6300esb -rtc base=localtime -drive file=/fs/sdc1/disk0-vm-kbuild-yocto-x86_64-28,media=disk,if=virtio -pidfile /dev/shm/kboot/pid-vm-kbuild-yocto-x86_64-28 -serial file:/dev/shm/kboot/serial-vm-kbuild-yocto-x86_64-28 -daemonize -display none -monitor null 




Thanks,
Xiaolong Ye

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