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Date: Tue, 31 May 2016 23:20:31 +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] a237e0d704: BUG: kernel test hang
FYI, we noticed the following commit:
https://git.kernel.org/pub/scm/linux/kernel/git/tytso/random.git dev
commit a237e0d70467a748cca16b2e4dbaefa831cd5f22 ("random: replace non-blocking pool with a Chacha20-based CRNG")
on test machine: vm-lkp-wsx03-quantal-i386: 1 threads qemu-system-i386 -enable-kvm with 360M memory
caused below changes:
+-------------------------------------------------------------------------+----------+------------+
| | v4.7-rc1 | a237e0d704 |
+-------------------------------------------------------------------------+----------+------------+
| boot_successes | 74 | 4 |
| boot_failures | 31 | |
| invoked_oom-killer:gfp_mask=0x | 9 | |
| Mem-Info | 9 | |
| Out_of_memory:Kill_process | 9 | |
| page_allocation_failure:order:#,mode:#(GFP_HIGHUSER_MOVABLE) | 8 | |
| warn_alloc_failed+0x | 7 | |
| backtrace:_do_fork | 9 | |
| backtrace:SyS_clone | 9 | |
| backtrace:do_writev | 6 | |
| backtrace:SyS_writev | 6 | |
| page_allocation_failure:order:#,mode:#(GFP_HIGHUSER_MOVABLE|__GFP_ZERO) | 1 | |
| BUG:unable_to_handle_kernel | 2 | |
| Oops:#[##] | 2 | |
| EIP_is_at_perf_prepare_sample | 2 | |
| Kernel_panic-not_syncing:Fatal_exception | 2 | |
| Kernel_panic-not_syncing:Out_of_memory_and_no_killable_processes | 2 | |
| IP-Config:Auto-configuration_of_network_failed | 20 | |
+-------------------------------------------------------------------------+----------+------------+
[ 1502.687825] Writes: Total: 2 Max/Min: 0/0 Fail: 0
Elapsed time: 1540
BUG: kernel test hang
qemu-system-i386 -enable-kvm -kernel /pkg/linux/i386-randconfig-s1-201622/gcc-6/a237e0d70467a748cca16b2e4dbaefa831cd5f22/vmlinuz-4.7.0-rc1-00001-ga237e0d -append 'root=/dev/ram0 user=lkp job=/lkp/scheduled/vm-lkp-wsx03-quantal-i386-7/bisect_boot-1-quantal-core-i386.cgz-i386-randconfig-s1-201622-a237e0d70467a748cca16b2e4dbaefa831cd5f22-20160531-96518-1tb7f3s-0.yaml ARCH=i386 kconfig=i386-randconfig-s1-201622 branch=linux-devel/devel-spot-201605311827 commit=a237e0d70467a748cca16b2e4dbaefa831cd5f22 BOOT_IMAGE=/pkg/linux/i386-randconfig-s1-201622/gcc-6/a237e0d70467a748cca16b2e4dbaefa831cd5f22/vmlinuz-4.7.0-rc1-00001-ga237e0d max_uptime=600 RESULT_ROOT=/result/boot/1/vm-lkp-wsx03-quantal-i386/quantal-core-i386.cgz/i386-randconfig-s1-201622/gcc-6/a237e0d70467a748cca16b2e4dbaefa831cd5f22/0 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-quantal-i386-7::dhcp drbd.minor_count=8' -initrd /fs/sdc1/initrd-vm-lkp-wsx03-quantal-i386-7 -m 360 -smp 1 -device e1000,netdev=net0 -netdev user,id=net0 -boot order=nc -no-reboot -watchdog i6300esb -rtc base=localtime -pidfile /dev/shm/kboot/pid-vm-lkp-wsx03-quantal-i386-7 -serial file:/dev/shm/kboot/serial-vm-lkp-wsx03-quantal-i386-7 -daemonize -display none -monitor null
FYI, raw QEMU command line is:
qemu-system-i386 -enable-kvm -kernel /pkg/linux/i386-randconfig-s1-201622/gcc-6/a237e0d70467a748cca16b2e4dbaefa831cd5f22/vmlinuz-4.7.0-rc1-00001-ga237e0d -append 'root=/dev/ram0 user=lkp job=/lkp/scheduled/vm-lkp-wsx03-quantal-i386-7/bisect_boot-1-quantal-core-i386.cgz-i386-randconfig-s1-201622-a237e0d70467a748cca16b2e4dbaefa831cd5f22-20160531-96518-1tb7f3s-0.yaml ARCH=i386 kconfig=i386-randconfig-s1-201622 branch=linux-devel/devel-spot-201605311827 commit=a237e0d70467a748cca16b2e4dbaefa831cd5f22 BOOT_IMAGE=/pkg/linux/i386-randconfig-s1-201622/gcc-6/a237e0d70467a748cca16b2e4dbaefa831cd5f22/vmlinuz-4.7.0-rc1-00001-ga237e0d max_uptime=600 RESULT_ROOT=/result/boot/1/vm-lkp-wsx03-quantal-i386/quantal-core-i386.cgz/i386-randconfig-s1-201622/gcc-6/a237e0d70467a748cca16b2e4dbaefa831cd5f22/0 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-quantal-i386-7::dhcp drbd.minor_count=8' -initrd /fs/sdc1/initrd-vm-lkp-wsx03-quantal-i386-7 -m 360 -smp 1 -device e1000,netdev=net0 -netdev user,id=net0 -boot order=nc -no-reboot -watchdog i6300esb -rtc base=localtime -pidfile /dev/shm/kboot/pid-vm-lkp-wsx03-quantal-i386-7 -serial file:/dev/shm/kboot/serial-vm-lkp-wsx03-quantal-i386-7 -daemonize -display none -monitor null
Thanks,
Kernel Test Robot
View attachment "config-4.7.0-rc1-00001-ga237e0d" of type "text/plain" (95095 bytes)
Download attachment "dmesg.xz" of type "application/octet-stream" (11228 bytes)
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