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Date: Wed, 17 Aug 2016 09:43:10 +0800
From: kernel test robot <xiaolong.ye@...el.com>
To: kan.liang@...el.com
Cc: davem@...emloft.net, linux-kernel@...r.kernel.org,
netdev@...r.kernel.org, mingo@...hat.com, peterz@...radead.org,
kuznet@....inr.ac.ru, jmorris@...ei.org, yoshfuji@...ux-ipv6.org,
kaber@...sh.net, akpm@...ux-foundation.org, keescook@...omium.org,
viro@...iv.linux.org.uk, gorcunov@...nvz.org,
john.stultz@...aro.org, aduyck@...antis.com, ben@...adent.org.uk,
decot@...glers.com, fw@...len.de, alexander.duyck@...il.com,
daniel@...earbox.net, tom@...bertland.com, rdunlap@...radead.org,
xiyou.wangcong@...il.com, hannes@...essinduktion.org,
jesse.brandeburg@...el.com, andi@...stfloor.org,
Kan Liang <kan.liang@...el.com>, lkp@...org
Subject: [lkp] [net/netpolicy] 19e7d15d66: EIP: [<c735077b>]
netpolicy_unregister+0x23a/0x28a SS:ESP 0068:ceb19d94
FYI, we noticed the following commit:
https://github.com/0day-ci/linux kan-liang-intel-com/net-introduce-NET-policy/20160805-034810
commit 19e7d15d66de8b17e3f2706b786fdc36932bbdbb ("net/netpolicy: limit the total record number")
in testcase: boot
on test machine: 2 threads qemu-system-i386 -enable-kvm with 320M memory
caused below changes:
+-------------------------------------------------------------------------+------------+------------+
| | 199cbcce52 | 19e7d15d66 |
+-------------------------------------------------------------------------+------------+------------+
| boot_successes | 0 | 0 |
| boot_failures | 292 | 292 |
| INFO:trying_to_register_non-static_key | 292 | 292 |
| backtrace:lock_acquire | 292 | 292 |
| backtrace:_raw_spin_lock | 292 | 292 |
| backtrace:init_netpolicy | 292 | 292 |
| backtrace:netpolicy_dev_init | 292 | 292 |
| backtrace:netpolicy_net_init | 292 | 292 |
| backtrace:ops_init | 292 | 292 |
| backtrace:register_pernet_subsys | 292 | 292 |
| backtrace:netpolicy_init | 292 | 292 |
| backtrace:kernel_init_freeable | 292 | 292 |
| BUG:sleeping_function_called_from_invalid_context_at_kernel/workqueue.c | 3 | 1 |
| INFO:lockdep_is_turned_off | 3 | 1 |
| backtrace:cpu_startup_entry | 2 | |
| invoked_oom-killer:gfp_mask=0x | 2 | 2 |
| Mem-Info | 2 | 2 |
| BUG:unable_to_handle_kernel | 0 | 9 |
| Oops | 0 | 10 |
| EIP_is_at_netpolicy_unregister | 0 | 10 |
| Kernel_panic-not_syncing:Fatal_exception_in_interrupt | 0 | 10 |
| backtrace:do_group_exit | 0 | 9 |
| backtrace:SyS_exit_group | 0 | 9 |
+-------------------------------------------------------------------------+------------+------------+
[ 60.668086] BUG: unable to handle kernel NULL pointer dereference at 000005e4
[ 60.668237] IP: [<c735077b>] netpolicy_unregister+0x23a/0x28a
[ 60.668237] *pdpt = 0000000000000000 *pde = f000ff53f000ff53
[ 60.668237] Oops: 0000 [#1] SMP
[ 60.668237] CPU: 1 PID: 719 Comm: trinity-main Not tainted 4.7.0-11575-g19e7d15 #1
[ 60.668237] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[ 60.668237] task: cff11280 task.stack: ceb18000
[ 60.668237] EIP: 0060:[<c735077b>] EFLAGS: 00010286 CPU: 1
[ 60.668237] EIP is at netpolicy_unregister+0x23a/0x28a
[ 60.668237] EAX: 00040025 EBX: d01b8b14 ECX: 00000001 EDX: 000440e4
[ 60.668237] ESI: d0ced518 EDI: 00000000 EBP: ceb19e54 ESP: ceb19d94
[ 60.668237] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
[ 60.668237] CR0: 80050033 CR2: 000005e4 CR3: 08683000 CR4: 000006b0
[ 60.668237] DR0: 08a96000 DR1: 00000000 DR2: 00000000 DR3: 00000000
[ 60.668237] DR6: ffff0ff0 DR7: 00000600
[ 60.668237] Stack:
[ 60.668237] d397acd0 d30f3e20 ceb19e38 00000001 d397acd0 ceb19e38 c5fab23a 00000246
[ 60.668237] 00000001 cd652738 cff11280 00000000 00000000 ceb19dfc 00000046 00000000
[ 60.668237] 00000046 00000046 c72dca5a ceb19e0c 00000046 00000046 c72dca5a d01b8c60
[ 60.668237] Call Trace:
[ 60.668237] [<c5fab23a>] ? __slab_free+0x78f/0xcfd
[ 60.668237] [<c72dca5a>] ? skb_dequeue+0x20/0xd6
[ 60.668237] [<c72dca5a>] ? skb_dequeue+0x20/0xd6
[ 60.668237] [<c5d80089>] ? do_raw_spin_unlock+0x17e/0x1f2
[ 60.668237] [<c5ce14fb>] ? __local_bh_enable_ip+0x1d7/0x24a
[ 60.668237] [<c7367037>] ? unix_sock_destructor+0x365/0x37b
[ 60.668237] [<c72c8cce>] __sk_destruct+0x302/0x3a3
[ 60.668237] [<c5d80089>] ? do_raw_spin_unlock+0x17e/0x1f2
[ 60.668237] [<c72ca76f>] sk_destruct+0x60/0x70
[ 60.668237] [<c72ca997>] __sk_free+0x218/0x23e
[ 60.668237] [<c72cab29>] sk_free+0x76/0x87
[ 60.668237] [<c73666ff>] unix_release_sock+0x533/0x5aa
[ 60.668237] [<c73667cc>] unix_release+0x56/0x70
[ 60.668237] [<c72c285b>] sock_release+0x52/0x118
[ 60.668237] [<c72c293a>] sock_close+0x19/0x2b
[ 60.668237] [<c5ff7453>] __fput+0x2b2/0x516
[ 60.668237] [<c5ff76cd>] ____fput+0x16/0x26
[ 60.668237] [<c5d17d6b>] task_work_run+0xdb/0x13a
[ 60.668237] [<c5cde511>] do_exit+0x8ec/0x125f
[ 60.668237] [<c5cdf0e2>] do_group_exit+0x1db/0x1db
[ 60.668237] [<c5cdf101>] SyS_exit_group+0x1f/0x1f
[ 60.668237] [<c5c051a0>] do_int80_syscall_32+0xe7/0x216
[ 60.668237] [<c7387767>] entry_INT80_32+0x27/0x27
[ 60.668237] Code: 00 83 15 6c dd 88 c9 00 8b 4e 18 8b 56 14 8b 46 10 e8 e1 b7 ff ff 89 f0 83 05 70 dd 88 c9 01 83 15 74 dd 88 c9 00 e8 be 1f c6 fe <8b> 87 e4 05 00 00 83 05 78 dd 88 c9 01 83 15 7c dd 88 c9 00 f0
[ 60.668237] EIP: [<c735077b>] netpolicy_unregister+0x23a/0x28a SS:ESP 0068:ceb19d94
[ 60.668237] CR2: 00000000000005e4
[ 60.668237] ---[ end trace 0a852e6d62e4e5da ]---
[ 60.668237] Kernel panic - not syncing: Fatal exception in interrupt
[ 60.668237] Kernel Offset: 0x4c00000 from 0xc1000000 (relocation range: 0xc0000000-0xd47dffff)
FYI, raw QEMU command line is:
qemu-system-i386 -enable-kvm -kernel /pkg/linux/i386-randconfig-b0-08090859/gcc-5/19e7d15d66de8b17e3f2706b786fdc36932bbdbb/vmlinuz-4.7.0-11575-g19e7d15 -append 'ip=::::vm-ivb41-yocto-i386-1::dhcp root=/dev/ram0 user=lkp job=/lkp/scheduled/vm-ivb41-yocto-i386-1/boot-1-yocto-minimal-i386.cgz-19e7d15d66de8b17e3f2706b786fdc36932bbdbb-20160812-47599-1hnwfr3-224.yaml ARCH=i386 kconfig=i386-randconfig-b0-08090859 branch=linux-devel/devel-hourly-2016080906 commit=19e7d15d66de8b17e3f2706b786fdc36932bbdbb BOOT_IMAGE=/pkg/linux/i386-randconfig-b0-08090859/gcc-5/19e7d15d66de8b17e3f2706b786fdc36932bbdbb/vmlinuz-4.7.0-11575-g19e7d15 max_uptime=600 RESULT_ROOT=/result/boot/1/vm-ivb41-yocto-i386/yocto-minimal-i386.cgz/i386-randconfig-b0-08090859/gcc-5/19e7d15d66de8b17e3f2706b786fdc36932bbdbb/224 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 drbd.minor_count=8' -initrd /fs/sda5/initrd-vm-ivb41-yocto-i386-1 -m 320 -smp 2 -device e1000,netdev=net0 -netdev user,id=net0 -boot order=nc -no-reboot -watchdog i6300esb -watchdog-action debug -rtc base=localtime -drive file=/fs/sda5/disk0-vm-ivb41-yocto-i386-1,media=disk,if=virtio -pidfile /dev/shm/kboot/pid-vm-ivb41-yocto-i386-1 -serial file:/dev/shm/kboot/serial-vm-ivb41-yocto-i386-1 -daemonize -display none -monitor null
Thanks,
Xiaolong
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