linux-kernel - [random] 229b0d4ca2: BUG: kernel test hang

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Date:	Mon, 13 Jun 2016 14:25:33 +0800
From:	kernel test robot <xiaolong.ye@...el.com>
To:	Theodore Ts'o <tytso@....edu>
Cc:	lkp@...org, Theodore Ts'o <tytso@....edu>,
	LKML <linux-kernel@...r.kernel.org>
Subject: [random]  229b0d4ca2: BUG: kernel test hang



FYI, we noticed the following commit:

https://git.kernel.org/pub/scm/linux/kernel/git/tytso/random.git dev
commit 229b0d4ca2d7afbad4635e00d10c02aa7cc20d45 ("random: replace non-blocking pool with a Chacha20-based CRNG")


on test machine: vm-lkp-wsx03-openwrt-i386: 1 threads qemu-system-i386 -enable-kvm with 192M memory

caused below changes:


+----------------+----------+------------+
|                | v4.7-rc1 | 229b0d4ca2 |
+----------------+----------+------------+
| boot_successes | 28       | 2          |
+----------------+----------+------------+



[ 1505.386362] Writes:  Total: 2  Max/Min: 0/0   Fail: 0 

Elapsed time: 1530
BUG: kernel test hang
qemu-system-i386 -enable-kvm -kernel /pkg/linux/i386-randconfig-n0-201624/gcc-6/229b0d4ca2d7afbad4635e00d10c02aa7cc20d45/vmlinuz-4.7.0-rc1-00001-g229b0d4 -append 'root=/dev/ram0 user=lkp job=/lkp/scheduled/vm-lkp-wsx03-openwrt-i386-19/bisect_boot-1-openwrt-i386.cgz-i386-randconfig-n0-201624-229b0d4ca2d7afbad4635e00d10c02aa7cc20d45-20160613-1532-1d2nvlr-0.yaml~ ARCH=i386 kconfig=i386-randconfig-n0-201624 branch=linux-devel/devel-spot-201606122112 commit=229b0d4ca2d7afbad4635e00d10c02aa7cc20d45 BOOT_IMAGE=/pkg/linux/i386-randconfig-n0-201624/gcc-6/229b0d4ca2d7afbad4635e00d10c02aa7cc20d45/vmlinuz-4.7.0-rc1-00001-g229b0d4 max_uptime=600 RESULT_ROOT=/result/boot/1/vm-lkp-wsx03-openwrt-i386/openwrt-i386.cgz/i386-randconfig-n0-201624/gcc-6/229b0d4ca2d7afbad4635e00d10c02aa7cc20d45/0 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-lkp-wsx03-openwrt-i386-19::dhcp drbd.minor_count=8'  -initrd /fs/sdc1/initrd-vm-lkp-wsx03-openwrt-i386-19 -m 192 -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-lkp-wsx03-openwrt-i386-19,media=disk,if=virtio -drive file=/fs/sdc1/disk1-vm-lkp-wsx03-openwrt-i386-19,media=disk,if=virtio -pidfile /dev/shm/kboot/pid-vm-lkp-wsx03-openwrt-i386-19 -serial file:/dev/shm/kboot/serial-vm-lkp-wsx03-openwrt-i386-19 -daemonize -display none -monitor null 


FYI, raw QEMU command line is:

	qemu-system-i386 -enable-kvm -kernel /pkg/linux/i386-randconfig-n0-201624/gcc-6/229b0d4ca2d7afbad4635e00d10c02aa7cc20d45/vmlinuz-4.7.0-rc1-00001-g229b0d4 -append 'root=/dev/ram0 user=lkp job=/lkp/scheduled/vm-lkp-wsx03-openwrt-i386-19/bisect_boot-1-openwrt-i386.cgz-i386-randconfig-n0-201624-229b0d4ca2d7afbad4635e00d10c02aa7cc20d45-20160613-1532-1d2nvlr-0.yaml~ ARCH=i386 kconfig=i386-randconfig-n0-201624 branch=linux-devel/devel-spot-201606122112 commit=229b0d4ca2d7afbad4635e00d10c02aa7cc20d45 BOOT_IMAGE=/pkg/linux/i386-randconfig-n0-201624/gcc-6/229b0d4ca2d7afbad4635e00d10c02aa7cc20d45/vmlinuz-4.7.0-rc1-00001-g229b0d4 max_uptime=600 RESULT_ROOT=/result/boot/1/vm-lkp-wsx03-openwrt-i386/openwrt-i386.cgz/i386-randconfig-n0-201624/gcc-6/229b0d4ca2d7afbad4635e00d10c02aa7cc20d45/0 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-lkp-wsx03-openwrt-i386-19::dhcp drbd.minor_count=8'  -initrd /fs/sdc1/initrd-vm-lkp-wsx03-openwrt-i386-19 -m 192 -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-lkp-wsx03-openwrt-i386-19,media=disk,if=virtio -drive file=/fs/sdc1/disk1-vm-lkp-wsx03-openwrt-i386-19,media=disk,if=virtio -pidfile /dev/shm/kboot/pid-vm-lkp-wsx03-openwrt-i386-19 -serial file:/dev/shm/kboot/serial-vm-lkp-wsx03-openwrt-i386-19 -daemonize -display none -monitor null 





Thanks,
Kernel Test Robot

View attachment "config-4.7.0-rc1-00001-g229b0d4" of type "text/plain" (90943 bytes)

Download attachment "dmesg.xz" of type "application/octet-stream" (13896 bytes)