linux-kernel - [vlan_device_event] BUG: unable to handle kernel paging request at 6b6b6ccf

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Date:   Tue, 7 Nov 2017 18:21:56 +0800
From:   Fengguang Wu <fengguang.wu@...el.com>
To:     netdev@...r.kernel.org
Cc:     "David S. Miller" <davem@...emloft.net>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        linux-kernel@...r.kernel.org
Subject: [vlan_device_event] BUG: unable to handle kernel paging request at
 6b6b6ccf

Hello,

FYI this happens in v4.14-rc8 -- it's not necessarily a new bug.

[  505.852050] 8021q: adding VLAN 0 to HW filter on device eth0
[  507.856428] e1000: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX
[  509.687375] 8021q: adding VLAN 0 to HW filter on device eth0
[  511.701582] e1000: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX
[  512.713331] /lkp/lkp/src/bin/run-lkp
[  513.540756] BUG: unable to handle kernel paging request at 6b6b6ccf
[  513.549868] IP: vlan_device_event+0x1b3/0x670
[  513.556180] *pdpt = 0000000010970001 *pde = 0000000000000000 
[  513.564638] Oops: 0000 [#1] PREEMPT SMP
[  513.570208] CPU: 0 PID: 702 Comm: netifd Not tainted 4.14.0-rc8 #60
[  513.579283] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014
[  513.591245] task: 91558300 task.stack: 908e0000
[  513.597762] EIP: vlan_device_event+0x1b3/0x670
[  513.604402] EFLAGS: 00010206 CPU: 0
[  513.609395] EAX: 00000e59 EBX: 00000000 ECX: 6b6b6b6b EDX: 00000059
[  513.618370] ESI: 923f7780 EDI: 92bbd000 EBP: 908e1dcc ESP: 908e1d94
[  513.627510]  DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
[  513.635220] CR0: 80050033 CR2: 6b6b6ccf CR3: 11de9ce0 CR4: 000006b0
[  513.644418] Call Trace:
[  513.647987]  ? dn_dev_delete+0xd8/0x160
[  513.653567]  ? dn_dev_down+0xa8/0xe0
[  513.658785]  notifier_call_chain+0x2a/0x80
[  513.664908]  raw_notifier_call_chain+0x1a/0x20
[  513.671287]  call_netdevice_notifiers_info+0x2e/0x70
[  513.678511]  ? rtmsg_ifinfo+0x2a/0x30
[  513.683931]  __dev_notify_flags+0x5a/0xb0
[  513.689859]  dev_change_flags+0x4d/0x60
[  513.695404]  dev_ifsioc+0x1bb/0x410
[  513.700677]  ? mutex_lock_nested+0x20/0x30
[  513.706778]  dev_ioctl+0xf9/0x630
[  513.711595]  ? dev_ioctl+0x2d8/0x630
[  513.716750]  sock_ioctl+0x12e/0x250
[  513.721975]  ? sockfs_setattr+0x40/0x40
[  513.727645]  do_vfs_ioctl+0x84/0x7d0
[  513.732886]  ? trace_hardirqs_on+0xb/0x10
[  513.738698]  ? putname+0x4c/0x50
[  513.743553]  ? do_sys_open+0x187/0x210
[  513.748995]  ? __do_page_fault+0x19b/0x460
[  513.754988]  SyS_ioctl+0x34/0x60
[  513.759721]  do_int80_syscall_32+0x61/0x180
[  513.765945]  entry_INT80_32+0x2c/0x2c
[  513.771292] EIP: 0x77ef8648
[  513.775340] EFLAGS: 00000246 CPU: 0
[  513.780463] EAX: ffffffda EBX: 00000005 ECX: 00008914 EDX: 7fae4f90
[  513.789535] ESI: 7fae4f90 EDI: 7fae4fb0 EBP: 7fae4fc8 ESP: 7fae4f5c
[  513.798447]  DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 007b
[  513.806393] Code: 04 00 00 31 c0 8d 76 00 89 c2 89 c3 81 e2 ff 0f 00 00 89 d1 c1 fb 0c c1 e9 09 8d 0c d9 8b 4c 8e 10 85 c9 74 34 81 e2 ff 01 00 00 <8b> 14 91 85 d2 74 27 f6 82 30 01 00 00 01 74 1e f6 82 ac 05 00
[  513.833477] EIP: vlan_device_event+0x1b3/0x670 SS:ESP: 0068:908e1d94
[  513.842617] CR2: 000000006b6b6ccf
[  513.848197] RESULT_ROOT=/result/trinity/300s/vm-lkp-wsx03-openwrt-i386/openwrt-i386-2016-03-16.cgz/i386-randconfig-sb0-11061353/gcc-5/39dae59d66acd86d1de24294bd2f343fd5e7a625/0
[  513.848197] job=/lkp/scheduled/vm-lkp-wsx03-openwrt-i386-2/trinity-300s-openwrt-i386-2016-03-16.cgz-39dae59d66acd86d1de24294bd2f343fd5e7a625-20171106-42756-1xjcna0-0.yaml
[  513.848197] run-job /lkp/scheduled/vm-lkp-wsx03-openwrt-i386-2/trinity-300s-openwrt-i386-2016-03-16.cgz-39dae59d66acd86d1de24294bd2f343fd5e7a625-20171106-42756-1xjcna0-0.yaml
[  513.848197] /bin/busybox wget -q http://inn:80/~lkp/cgi-bin/lkp-jobfile-append-var?job_file=/lkp/scheduled/vm-lkp-wsx03-openwrt-i386-2/trinity-300s-openwrt-i386-2016-03-16.cgz-39dae59d66acd86d1de24294bd2f343fd5e7a625-20171106-42756-1xjcna0-0.yaml&job_state=running -O /dev/null

Attached the full dmesg and kconfig.

Thanks,
Fengguang

View attachment "dmesg-vm-lkp-wsx03-openwrt-i386-2:20171106140553:i386-randconfig-sb0-11061353:4.14.0-rc8:60" of type "text/plain" (82556 bytes)

View attachment ".config" of type "text/plain" (107080 bytes)