netdev - [BUG] igb: panic at boot time with latest Linus tree

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Message-ID: <1343715255.21269.47.camel@edumazet-glaptop>
Date:	Tue, 31 Jul 2012 08:14:15 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	David Miller <davem@...emloft.net>,
	Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Cc:	netdev <netdev@...r.kernel.org>
Subject: [BUG] igb: panic at boot time with latest Linus tree

For information, I get this each time I boot on latest Linus tree :

RTNL is left locked, so machine unusable.

No problem with David net tree, so thats a bit strange...

Not sure I'll have time to investigate today
(And tomorrow I am off for the day)

[   11.153682] BUG: unable to handle kernel NULL pointer dereference at           (null)
[   11.153806] IP: [<          (null)>]           (null)
[   11.153872] PGD 310544067 PUD 311b2d067 PMD 0 
[   11.153945] Oops: 0010 [#1] SMP 
[   11.154012] Modules linked in: nfsd exportfs nfs lockd auth_rpcgss sunrpc asix usbnet rt61pci crc_itu_t rt2x00pci rt2x00lib eeprom_93cx6 tg3 ixgbe mdio igb
[   11.154227] CPU 10 
[   11.154239] Pid: 2476, comm: NetworkManager Not tainted 3.5.0+ #123 Hewlett-Packard HP Z600 Workstation/0B54h
[   11.154437] RIP: 0010:[<0000000000000000>]  [<          (null)>]           (null)
[   11.154574] RSP: 0018:ffff88030f667630  EFLAGS: 00010282
[   11.154645] RAX: 0000000017cf7980 RBX: ffff88031080f100 RCX: 0000000000000200
[   11.154720] RDX: 0000000000000040 RSI: ffffea0017cf7980 RDI: ffff880611bc1098
[   11.154794] RBP: ffff88030f667678 R08: 0000000000000002 R09: 0000000000000000
[   11.154868] R10: ffffea0017cf7980 R11: 0000000000000000 R12: ffffc90007d58000
[   11.154942] R13: ffff880611bc1098 R14: ffff8803106ff000 R15: ffff8805f3de6040
[   11.155016] FS:  00007fa2e4b94800(0000) GS:ffff88061fc80000(0000) knlGS:0000000000000000
[   11.155148] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   11.155220] CR2: 0000000000000000 CR3: 000000031066a000 CR4: 00000000000007e0
[   11.155283] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   11.155347] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[   11.155411] Process NetworkManager (pid: 2476, threadinfo ffff88030f666000, task ffff880310dd2d00)
[   11.155523] Stack:
[   11.155579]  ffffffffa00071fe 0000000000000000 00ffff00a000400a ffff88030f667678
[   11.155712]  ffff88030f610700 0000000000000001 ffff88030f610708 ffff88030f610740
[   11.155840]  0000000000000001 ffff88030f6676b8 ffffffffa000834b ffff88030f610700
[   11.155969] Call Trace:
[   11.156036]  [<ffffffffa00071fe>] ? igb_alloc_rx_buffers+0x13e/0x2d0 [igb]
[   11.156104]  [<ffffffffa000834b>] igb_configure+0x34b/0x4d0 [igb]
[   11.156170]  [<ffffffffa0008572>] __igb_open+0xa2/0x510 [igb]
[   11.156237]  [<ffffffff812c0731>] ? find_next_bit+0x21/0xd0
[   11.156303]  [<ffffffffa0008b50>] igb_open+0x10/0x20 [igb]
[   11.156369]  [<ffffffff8155288f>] __dev_open+0x8f/0xe0
[   11.156432]  [<ffffffff81552b31>] __dev_change_flags+0xa1/0x180
[   11.156495]  [<ffffffff81552cc8>] dev_change_flags+0x28/0x70
[   11.156559]  [<ffffffff8155f664>] do_setlink+0x284/0x9e0
[   11.156624]  [<ffffffff81560c8a>] ? rtnl_fill_ifinfo+0x92a/0xb30
[   11.156690]  [<ffffffff812cc220>] ? nla_parse+0x30/0xe0
[   11.156755]  [<ffffffff81561b35>] rtnl_newlink+0x345/0x580
[   11.156820]  [<ffffffff812655b9>] ? selinux_capable+0x39/0x50
[   11.156885]  [<ffffffff81262538>] ? security_capable+0x18/0x20
[   11.156948]  [<ffffffff81561384>] rtnetlink_rcv_msg+0x124/0x310
[   11.157012]  [<ffffffff8113794b>] ? kfree+0x3b/0x160
[   11.157074]  [<ffffffff81561260>] ? __rtnl_unlock+0x20/0x20
[   11.157137]  [<ffffffff8157a569>] netlink_rcv_skb+0xa9/0xd0
[   11.157200]  [<ffffffff8155ed55>] rtnetlink_rcv+0x25/0x40
[   11.157262]  [<ffffffff81579f4d>] netlink_unicast+0x1ad/0x230
[   11.157326]  [<ffffffff8157a286>] netlink_sendmsg+0x2b6/0x310
[   11.157396]  [<ffffffff815381ac>] sock_sendmsg+0xdc/0xf0
[   11.157459]  [<ffffffff8153aab8>] ? move_addr_to_kernel+0x68/0xb0
[   11.157526]  [<ffffffff81539b12>] __sys_sendmsg+0x392/0x3a0
[   11.157590]  [<ffffffff81118bbe>] ? handle_mm_fault+0x13e/0x210
[   11.157656]  [<ffffffff81155008>] ? __d_free+0x48/0x70
[   11.157720]  [<ffffffff8115e616>] ? mntput+0x26/0x40
[   11.157783]  [<ffffffff81140371>] ? __fput+0x191/0x250
[   11.157846]  [<ffffffff8153b809>] sys_sendmsg+0x49/0x90
[   11.157911]  [<ffffffff816ca652>] system_call_fastpath+0x16/0x1b
[   11.157973] Code:  Bad RIP value.
[   11.158041] RIP  [<          (null)>]           (null)
[   11.158106]  RSP <ffff88030f667630>
[   11.158163] CR2: 0000000000000000
[   11.158227] ---[ end trace bbfaed088efd61cb ]---
[   11.158300] NetworkManager (2476) used greatest stack depth: 2936 bytes left


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