From: Andrew Morton <akpm@linux-foundation.org>
To: dbaryshkov@gmail.com
Cc: bugzilla-daemon@bugzilla.kernel.org,
bugme-daemon@bugzilla.kernel.org,
Urs Thuermann <urs.thuermann@volkswagen.de>,
Oliver Hartkopp <oliver.hartkopp@volkswagen.de>,
Lothar Wassmann <LW@KARO-electronics.de>,
netdev@vger.kernel.org
Subject: Re: [Bugme-new] [Bug 13954] New: Oops in rtnetlink code when creating can device
Date: Mon, 10 Aug 2009 21:54:36 -0700 [thread overview]
Message-ID: <20090810215436.0bf47297.akpm@linux-foundation.org> (raw)
In-Reply-To: <bug-13954-10286@http.bugzilla.kernel.org/>
(switched to email. Please respond via emailed reply-to-all, not via the
bugzilla web interface).
On Mon, 10 Aug 2009 11:34:28 GMT bugzilla-daemon@bugzilla.kernel.org wrote:
> http://bugzilla.kernel.org/show_bug.cgi?id=13954
Thanks.
> Summary: Oops in rtnetlink code when creating can device
> Product: Networking
> Version: 2.5
> Kernel Version: 2.6.30-rc5
> Platform: All
> OS/Version: Linux
> Tree: Mainline
> Status: NEW
> Severity: normal
> Priority: P1
> Component: Other
> AssignedTo: acme@ghostprotocols.net
> ReportedBy: dbaryshkov@gmail.com
> Regression: No
>
>
> I've got a nice oops when looking around new CAN code in kernel.
>
> root@qemux86:~# ip link add type can
> [ 713.113325] BUG: unable to handle kernel NULL pointer dereference at (null)
> [ 713.114216] IP: [<c13eecab>] register_netdevice+0xab/0x420
> [ 713.114920] *pdpt = 00000000061bd001 *pde = 0000000000000000
> [ 713.115627] Oops: 0000 [#1] SMP
> [ 713.115972] last sysfs file:
> /sys/devices/virtual/backlight/fujitsu-laptop/brightness
> [ 713.116137] Modules linked in:
> [ 713.116137]
> [ 713.116137] Pid: 1803, comm: ip Not tainted (2.6.31-rc5 #68)
> [ 713.116137] EIP: 0060:[<c13eecab>] EFLAGS: 00000246 CPU: 0
> [ 713.116137] EIP is at register_netdevice+0xab/0x420
> [ 713.116137] EAX: 00000000 EBX: 00000000 ECX: 00000001 EDX: 00000001
> [ 713.116137] ESI: c72c6000 EDI: 00000000 EBP: c61abb54 ESP: c61abb34
> [ 713.116137] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
> [ 713.116137] Process ip (pid: 1803, ti=c61aa000 task=c6f395e0
> task.ti=c61aa000)
> [ 713.116137] Stack:
> [ 713.116137] c61abb54 c13f732f 00000001 c61abbb4 894f908a 00000000 c72c6000
> 00000000
> [ 713.116137] <0> c61abc74 c13f8278 c61abbb4 00000010 c165d494 c1652090
> c61abc18 c6f3d028
> [ 713.116137] <0> 894f908a 894f908a c61abc18 c13f7da0 c61abc74 c13f7f46
> 00000008 c1546f80
> [ 713.116137] Call Trace:
> [ 713.116137] [<c13f732f>] ? rtnl_create_link+0x4f/0x130
> [ 713.116137] [<c13f8278>] ? rtnl_newlink+0x4d8/0x4e0
> [ 713.116137] [<c13f7da0>] ? rtnl_newlink+0x0/0x4e0
> [ 713.116137] [<c13f7f46>] ? rtnl_newlink+0x1a6/0x4e0
> [ 713.116137] [<c13f7da0>] ? rtnl_newlink+0x0/0x4e0
> [ 713.116137] [<c13f7d00>] ? rtnetlink_rcv_msg+0x180/0x220
> [ 713.116137] [<c13f7b80>] ? rtnetlink_rcv_msg+0x0/0x220
> [ 713.116137] [<c1400e56>] ? netlink_rcv_skb+0x86/0xb0
> [ 713.116137] [<c13f7b5a>] ? rtnetlink_rcv+0x2a/0x50
> [ 713.116137] [<c140085b>] ? netlink_unicast+0x29b/0x2b0
> [ 713.116137] [<c1400a5b>] ? netlink_sendmsg+0x1eb/0x2f0
> [ 713.116137] [<c13db72b>] ? sock_sendmsg+0xdb/0x110
> [ 713.116137] [<c10bef17>] ? __d_instantiate+0x57/0xe0
> [ 713.116137] [<c1053cd0>] ? autoremove_wake_function+0x0/0x60
> [ 713.116137] [<c110a75f>] ? ext3_lookup+0xaf/0x130
> [ 713.116137] [<c10bfd24>] ? d_alloc+0x114/0x1a0
> [ 713.116137] [<c10c5a95>] ? mntput_no_expire+0x25/0xe0
> [ 713.116137] [<c11b518e>] ? copy_from_user+0x3e/0x150
> [ 713.116137] [<c11b518e>] ? copy_from_user+0x3e/0x150
> [ 713.116137] [<c13e55cb>] ? verify_iovec+0x3b/0xc0
> [ 713.116137] [<c13db8b8>] ? sys_sendmsg+0x158/0x280
> [ 713.116137] [<c107a22c>] ? unlock_page+0x4c/0x70
> [ 713.116137] [<c108efb8>] ? __do_fault+0x378/0x470
> [ 713.116137] [<c10a81d3>] ? lookup_object+0x33/0x80
> [ 713.116137] [<c107a820>] ? filemap_fault+0x0/0x3c0
> [ 713.116137] [<c1029ba9>] ? kmemcheck_mark_freed+0x19/0x40
> [ 713.116137] [<c11b518e>] ? copy_from_user+0x3e/0x150
> [ 713.116137] [<c13dcd97>] ? sys_socketcall+0xb7/0x290
> [ 713.116137] [<c10230fa>] ? do_page_fault+0x18a/0x2a0
> [ 713.116137] [<c100324f>] ? sysenter_do_call+0x12/0x26
> [ 713.116137] Code: ff ff 3b 96 84 02 00 00 72 d6 8b 86 b4 00 00 00 c7 86 00
> 02 00 00 00 00 00 00 c7 86 04 02 00 00 ff ff ff ff c7 46 4c ff ff ff ff <8b> 10
> 85 d2 74 2f 89 f0 ff d2 83 f8 00 89 c7 74 24 b8 fb ff ff
> [ 713.116137] EIP: [<c13eecab>] register_netdevice+0xab/0x420 SS:ESP
> 0068:c61abb34
> [ 713.116137] CR2: 0000000000000000
> [ 713.142874] ---[ end trace 883d4085b7c1045b ]---
>
Boy, the backtrace is a bit hard to follow. Maybe enabling frame
pointers would clean it up.
next parent reply other threads:[~2009-08-11 11:54 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <bug-13954-10286@http.bugzilla.kernel.org/>
2009-08-11 4:54 ` Andrew Morton [this message]
2009-08-11 7:52 ` [Bugme-new] [Bug 13954] New: Oops in rtnetlink code when creating can device Oliver Hartkopp
2009-08-11 8:22 ` Patrick McHardy
2009-08-11 9:26 ` Oliver Hartkopp
2009-08-11 9:33 ` Patrick McHardy
2009-08-11 9:36 ` Oliver Hartkopp
2009-08-14 6:23 ` Oliver Hartkopp
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