linux-kernel - [lkp] [net] 2647cffb2b: general protection fault: 0000 [#1] SMP

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Message-ID: <20160809150909.GF11220@yexl-desktop>
Date:	Tue, 9 Aug 2016 23:09:09 +0800
From:	kernel test robot <xiaolong.ye@...el.com>
To:	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>
Cc:	"David S. Miller" <davem@...emloft.net>,
	LKML <linux-kernel@...r.kernel.org>,
	Stephen Rothwell <sfr@...b.auug.org.au>, lkp@...org
Subject: [lkp] [net]  2647cffb2b: general protection fault: 0000 [#1] SMP


FYI, we noticed the following commit:

https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
commit 2647cffb2bc6fbed163d377390eb7ca552c7c1cb ("net: ipconfig: Support using "delayed" DHCP replies")

in testcase: boot

on test machine: 1 threads qemu-system-x86_64 -enable-kvm -cpu Nehalem with 1G memory

caused below changes:


+------------------------------------------+------------+------------+
|                                          | 22fc538872 | 2647cffb2b |
+------------------------------------------+------------+------------+
| boot_successes                           | 8          | 0          |
| boot_failures                            | 0          | 6          |
| general_protection_fault:#[##]SMP        | 0          | 6          |
| RIP:strcpy                               | 0          | 6          |
| Kernel_panic-not_syncing:Fatal_exception | 0          | 6          |
| backtrace:kernel_init_freeable           | 0          | 6          |
| backtrace:ret_from_fork                  | 0          | 6          |
+------------------------------------------+------------+------------+



[   89.061170] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[   89.072165] Sending DHCP requests ., OK
[   89.075534] IP-Config: Got DHCP answer from 10.0.2.2, my address is 10.0.2.15
[   89.078223] general protection fault: 0000 [#1] SMP
[   89.080170] Modules linked in:
[   89.081918] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.7.0-11592-g2647cff #11
[   89.085318] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[   89.089047] task: ffff8800365c0040 task.stack: ffff8800365c8000
[   89.091327] RIP: 0010:[<ffffffff8156a511>]  [<ffffffff8156a511>] strcpy+0x9/0x18
[   89.094885] RSP: 0018:ffff8800365cbde0  EFLAGS: 00010246
[   89.097006] RAX: ffff8800365cbe20 RBX: ffff8800365cbe20 RCX: 0000000000000000
[   89.099452] RDX: 0000000000000000 RSI: 6b6b6b6b6b6b6b6b RDI: ffff8800365cbe20
[   89.102012] RBP: ffff8800365cbde0 R08: 0000002ba39efe42 R09: 0000000000000001
[   89.104605] R10: ffff8800365cbd98 R11: ffffffff811ee48d R12: 00000000fffcc43d
[   89.107155] R13: ffff88001d7ea160 R14: ffff8800365c0040 R15: ffff88003d47a650
[   89.109772] FS:  0000000000000000(0000) GS:ffff880038800000(0000) knlGS:0000000000000000
[   89.113338] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   89.115610] CR2: 0000000000000000 CR3: 0000000002418000 CR4: 00000000000006f0
[   89.118156] Stack:
[   89.119552]  ffff8800365cbe80 ffffffff82826801 0000000000000000 ffffffff824aad80
[   89.123531]  0000000000000002 00000000fffcb9b1 0000000100000006 0000000100000002
[   89.127474]  0000000000000000 0000000000000000 0000000000000000 0000000000000000
[   89.131510] Call Trace:
[   89.133014]  [<ffffffff82826801>] ip_auto_config+0xb79/0xe2e
[   89.135395]  [<ffffffff827b882c>] ? set_debug_rodata+0x12/0x12
[   89.137629]  [<ffffffff82826ab6>] ? ip_auto_config+0xe2e/0xe2e
[   89.140026]  [<ffffffff827b882c>] ? set_debug_rodata+0x12/0x12
[   89.142296]  [<ffffffff82826aeb>] ip_auto_config+0x35/0x37
[   89.144578]  [<ffffffff82826aeb>] ? ip_auto_config+0x35/0x37
[   89.146849]  [<ffffffff8100043e>] do_one_initcall+0x90/0x123
[   89.149119]  [<ffffffff827b882c>] ? set_debug_rodata+0x12/0x12
[   89.151399]  [<ffffffff827b90cb>] kernel_init_freeable+0x1cf/0x257
[   89.153721]  [<ffffffff81cce3a2>] kernel_init+0xe/0xf5
[   89.155845]  [<ffffffff81cdc52f>] ret_from_fork+0x1f/0x40
[   89.157910]  [<ffffffff81cce394>] ? rest_init+0x13b/0x13b
[   89.160079] Code: c2 43 f6 04 10 01 4c 89 d2 0f b6 c0 41 0f 45 d1 48 ff c1 0f b6 d2 39 d0 75 04 85 c0 75 c6 29 d0 5d c3 55 48 89 f8 31 d2 48 89 e5 <8a> 0c 16 88 0c 10 48 ff c2 84 c9 75 f3 5d c3 55 48 89 f8 31 c9 
[   89.175614] RIP  [<ffffffff8156a511>] strcpy+0x9/0x18
[   89.177856]  RSP <ffff8800365cbde0>
[   89.179687] ---[ end trace 76289f54f362e73f ]---
[   89.181690] Kernel panic - not syncing: Fatal exception


FYI, raw QEMU command line is:

	qemu-system-x86_64 -enable-kvm -cpu Nehalem -kernel /pkg/linux/x86_64-nfsroot/gcc-6/2647cffb2bc6fbed163d377390eb7ca552c7c1cb/vmlinuz-4.7.0-11592-g2647cff -append 'ip=::::vm-intel12-1G-1::dhcp root=/dev/ram0 user=lkp job=/lkp/scheduled/vm-intel12-1G-1/boot-1-debian-x86_64-2015-02-07.cgz-2647cffb2bc6fbed163d377390eb7ca552c7c1cb-20160809-29283-1s4umfr-0.yaml ARCH=x86_64 kconfig=x86_64-nfsroot branch=linux-devel/devel-catchup-201608091320 commit=2647cffb2bc6fbed163d377390eb7ca552c7c1cb BOOT_IMAGE=/pkg/linux/x86_64-nfsroot/gcc-6/2647cffb2bc6fbed163d377390eb7ca552c7c1cb/vmlinuz-4.7.0-11592-g2647cff max_uptime=600 RESULT_ROOT=/result/boot/1/vm-intel12-1G/debian-x86_64-2015-02-07.cgz/x86_64-nfsroot/gcc-6/2647cffb2bc6fbed163d377390eb7ca552c7c1cb/0 LKP_SERVER=inn 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 systemd.log_level=err ignore_loglevel earlyprintk=ttyS0,115200 console=ttyS0,115200 console=tty0 vga=normal rw'  -initrd /fs/KVM/initrd-vm-intel12-1G-1 -m 1024 -smp 1 -device e1000,netdev=net0 -netdev user,id=net0,hostfwd=tcp::23300-:22 -boot order=nc -no-reboot -watchdog i6300esb -watchdog-action debug -rtc base=localtime -drive file=/fs/KVM/disk0-vm-intel12-1G-1,media=disk,if=virtio -drive file=/fs/KVM/disk1-vm-intel12-1G-1,media=disk,if=virtio -drive file=/fs/KVM/disk2-vm-intel12-1G-1,media=disk,if=virtio -drive file=/fs/KVM/disk3-vm-intel12-1G-1,media=disk,if=virtio -drive file=/fs/KVM/disk4-vm-intel12-1G-1,media=disk,if=virtio -drive file=/fs/KVM/disk5-vm-intel12-1G-1,media=disk,if=virtio -pidfile /dev/shm/kboot/pid-vm-intel12-1G-1 -serial file:/dev/shm/kboot/serial-vm-intel12-1G-1 -daemonize -display none -monitor null 





Thanks,
Xiaolong

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