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Issues with Tun and OpenConnect/Anyconnect [SOLVED]
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Atmmac
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Joined: 17 Oct 2013
Posts: 26
Location: Watertown, MA

PostPosted: Sat Nov 23, 2013 4:51 pm    Post subject: Issues with Tun and OpenConnect/Anyconnect [SOLVED] Reply with quote

Everything was working fine previously on 3.10.7-gentoo-r1. I had to upgrade to 3.12.0 due to nvidia issues. Having problems with tun. I have it compiled as a module in my kernel and everything looks cool until i start anyconnect or openconnect and it hangs my system. I get the following with dmesg.

[ 40.552982] tun: Universal TUN/TAP device driver, 1.6
[ 40.552989] tun: (C) 1999-2004 Max Krasnyansky <maxk@qualcomm.com>
[ 75.137797] BUG: unable to handle kernel paging request at 0000000000008105
[ 75.137880] IP: [<ffffffff815f46b6>] __dev_get_by_name+0x36/0x80
[ 75.137943] PGD 3c806d067 PUD 3d992f067 PMD 0
[ 75.137995] Oops: 0000 [#1] PREEMPT SMP
[ 75.138043] Modules linked in: tun hidp bbswitch(O) rfcomm bnep uvcvideo videobuf2_vmalloc ath3k videobuf2_memops btusb videobuf2_core bluetooth videodev ath9k ath9k_common $
[ 75.138264] CPU: 1 PID: 4471 Comm: vpnagentd Tainted: G O 3.12.0-gentoo #1
[ 75.138333] Hardware name: Dell Inc. XPS L521X/029M77, BIOS A09 08/27/2012
[ 75.138401] task: ffff88044ca787d0 ti: ffff8803ce696000 task.ti: ffff8803ce696000
[ 75.138467] RIP: 0010:[<ffffffff815f46b6>] [<ffffffff815f46b6>] __dev_get_by_name+0x36/0x80
[ 75.138546] RSP: 0018:ffff8803ce697df8 EFLAGS: 00010a03
[ 75.138594] RAX: 00000000000000f2 RBX: 0000000000000000 RCX: 000000000000000f
[ 75.138656] RDX: 0000000000007975 RSI: 0000000000000000 RDI: ffff8803ce697e58
[ 75.138719] RBP: ffff8803ce697e08 R08: 0000000000000000 R09: 0000000000000000
[ 75.138781] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8803ce697e50
[ 75.138843] R13: ffff88044c6efc00 R14: ffff88044960aee0 R15: 00000000400454ca
[ 75.138906] FS: 0000000000000000(0000) GS:ffff88045f240000(0063) knlGS:00000000f6d61b40
[ 75.138976] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033
[ 75.139027] CR2: 0000000000008105 CR3: 00000003dadaa000 CR4: 00000000001407e0
[ 75.139089] Stack:
[ 75.139109] ffff8803c8205c00 00000000f6d6117c ffff8803ce697ea8 ffffffffa01ae61c
[ 75.139186] 0000000000000001 ffff8804493ebb00 ffff8803ce697e50 0000002000000001
[ 75.139262] ffff8803ce697e48 ffffffff8128da02 ffff8803ce697e98 306e75746f637363
[ 75.139337] Call Trace:
[ 75.139368] [<ffffffffa01ae61c>] __tun_chr_ioctl+0x24c/0x1000 [tun]
[ 75.139429] [<ffffffff8128da02>] ? inode_has_perm.isra.24+0x22/0x30
[ 75.139489] [<ffffffff817bbcc6>] ? _raw_spin_lock+0x16/0x40
[ 75.139546] [<ffffffffa01af3e0>] tun_chr_compat_ioctl+0x10/0x20 [tun]
[ 75.139609] [<ffffffff811959d1>] compat_sys_ioctl+0xd1/0x1300
[ 75.139666] [<ffffffff81194480>] ? compat_sys_fcntl64+0x30/0x390
[ 75.139724] [<ffffffff817c44b5>] sysenter_dispatch+0x7/0x1a
[ 75.139775] Code: 10 00 00 00 48 89 fb 4c 89 e7 e8 c6 8f ce ff 4c 89 e7 89 c6 e8 7c ce b5 ff 48 8b 93 d8 00 00 00 31 db 69 c0 01 00 37 9e c1 e8 18 <48> 8b 04 c2 48 8d 50 f0 $
[ 75.140137] RIP [<ffffffff815f46b6>] __dev_get_by_name+0x36/0x80
[ 75.140196] RSP <ffff8803ce697df8>
[ 75.140229] CR2: 0000000000008105
[ 75.162215] ---[ end trace 539190d128edfd5a ]---


Any thoughts on this issue?

Thanks!


Last edited by Atmmac on Mon Nov 25, 2013 1:59 pm; edited 1 time in total
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Atmmac
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Joined: 17 Oct 2013
Posts: 26
Location: Watertown, MA

PostPosted: Mon Nov 25, 2013 1:59 pm    Post subject: Update Kernel Fixed Reply with quote

Updating to the 3.12.1 kernel solved this issue. I am marking this as SOLVED.
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