Public bug reported:
Binary package hint: linux-image-2.6.24-21-generic
After updating to linux kernel 2.6.24-43 this appeared:
- Change mtu to 1392 (ip link set eth0 mtu 1392)
- Run IPSec based VPN client
- Exit client
- Change mtu back to 1500 (ip link set eth0 mtu1500)
System complains it cannot set mtu, then goes brain-dead and won't start
any applications or respond at the command line.
This is the embedded Marvell chipset on an ASUS P5B Deluxe motherboard:
05:04.0 Ethernet controller: Marvell Technology Group Ltd. 88E8001 Gigabit
Ethernet Controller (rev 14)
Subsystem: ASUSTeK Computer Inc. Marvell 88E8001 Gigabit Ethernet
Controller (Asus)
Flags: bus master, 66MHz, medium devsel, latency 64, IRQ 19
Memory at feaf4000 (32-bit, non-prefetchable) [size=16K]
I/O ports at b400 [size=256]
Expansion ROM at fea00000 [disabled] [size=128K]
Capabilities: [48] Power Management version 2
Capabilities: [50] Vital Product Data
After a hardware reset, this is found in the system logs:
Nov 6 16:45:17 duo kernel: [851621.661931] skge eth0: disabling interface
Nov 6 16:45:17 duo kernel: [851621.664520] skge eth0: enabling interface
Nov 6 16:45:17 duo kernel: [851621.667331] ------------[ cut here ]------------
Nov 6 16:45:17 duo kernel: [851621.667334] kernel BUG at
/build/buildd/linux-2.6.24/drivers/net/skge.c:2628!
Nov 6 16:45:17 duo kernel: [851621.667337] invalid opcode: 0000 [1] SMP
Nov 6 16:45:17 duo kernel: [851621.667340] CPU 3
Nov 6 16:45:17 duo kernel: [851621.667342] Modules linked in: snd_rtctimer
nls_cp437 isofs loop esp4 xfrm4_mode_tunnel dummy kqemu(P) rfc
Nov 6 16:45:17 duo kernel: ix ata_generic usb_storage sg sd_mod libusual
floppy skge pata_acpi ohci1394 ieee1394 sym53c8xx scsi_transport
Nov 6 16:45:17 duo kernel: [851621.667425] Pid: 31362, comm: ip Tainted: P
2.6.24-21-generic #1
Nov 6 16:45:17 duo kernel: [851621.667427] RIP:
0010:[skge:skge_up+0x7e0/0x820] [skge:skge_up+0x7e0/0x820]
:skge:skge_up+0x7e0/0x820
Nov 6 16:45:17 duo kernel: [851621.667437] RSP: 0018:ffff81020e85f868 EFLAGS:
00010206
Nov 6 16:45:17 duo kernel: [851621.667439] RAX: ffffc20001750424 RBX:
0000000000000000 RCX: ffffc20001750434
Nov 6 16:45:17 duo kernel: [851621.667441] RDX: ffff8101d9a08000 RSI:
ffffc20001750420 RDI: ffff8102738c5700
Nov 6 16:45:17 duo kernel: [851621.667444] RBP: ffff8102738c5700 R08:
0000000276460000 R09: ffff810273b0e580
Nov 6 16:45:17 duo kernel: [851621.667446] R10: ffffc20001750828 R11:
0000000000000000 R12: ffff810273b0e580
Nov 6 16:45:17 duo kernel: [851621.667448] R13: 0000000000000000 R14:
0000000000000000 R15: 0000000000008000
Nov 6 16:45:17 duo kernel: [851621.667451] FS: 00007fff1f5006e0(0000)
GS:ffff810277001f00(0000) knlGS:0000000000000000
Nov 6 16:45:17 duo kernel: [851621.667454] CS: 0010 DS: 0000 ES: 0000 CR0:
000000008005003b
Nov 6 16:45:17 duo kernel: [851621.667456] CR2: 000000000062f008 CR3:
000000022e42a000 CR4: 00000000000006e0
Nov 6 16:45:17 duo kernel: [851621.667459] DR0: 0000000000000000 DR1:
0000000000000000 DR2: 0000000000000000
Nov 6 16:45:17 duo kernel: [851621.667461] DR3: 0000000000000000 DR6:
00000000ffff4ff0 DR7: 0000000000000400
Nov 6 16:45:17 duo kernel: [851621.667464] Process ip (pid: 31362, threadinfo
ffff81020e85e000, task ffff8101009a77a0)
Nov 6 16:45:17 duo kernel: [851621.667466] Stack: ffff8102738c5700
0000000000000000 ffff8102738c5000 0000000000000000
Nov 6 16:45:17 duo kernel: [851621.667471] ffff810273b0e5bc 0000000000008000
00000000009a77a0 ffff810276464000
Nov 6 16:45:17 duo kernel: [851621.667476] ffff8102738c5780 00000000000005dc
ffff8102738c5000 00000000ffffffea
Nov 6 16:45:17 duo kernel: [851621.667480] Call Trace:
Nov 6 16:45:17 duo kernel: [851621.667509] [skge:skge_change_mtu+0x63/0x80]
:skge:skge_change_mtu+0x63/0x80
Nov 6 16:45:17 duo kernel: [851621.667518] [dev_set_mtu+0x35/0x60]
dev_set_mtu+0x35/0x60
Nov 6 16:45:17 duo kernel: [851621.667524] [do_setlink+0x250/0x3a0]
do_setlink+0x250/0x3a0
Nov 6 16:45:17 duo kernel: [851621.667535] [nla_parse+0x92/0xe0]
nla_parse+0x92/0xe0
Nov 6 16:45:17 duo kernel: [851621.667549] [rtnl_newlink+0x387/0x470]
rtnl_newlink+0x387/0x470
Nov 6 16:45:17 duo kernel: [851621.667610] [rtnetlink_rcv_msg+0x0/0x240]
rtnetlink_rcv_msg+0x0/0x240
Nov 6 16:45:17 duo kernel: [851621.667619] [netlink_rcv_skb+0x74/0xa0]
netlink_rcv_skb+0x74/0xa0
Nov 6 16:45:17 duo kernel: [851621.667627] [rtnetlink_rcv+0x18/0x20]
rtnetlink_rcv+0x18/0x20
Nov 6 16:45:17 duo kernel: [851621.667632] [netlink_unicast+0x245/0x270]
netlink_unicast+0x245/0x270
Nov 6 16:45:17 duo kernel: [851621.667637] [af_key:__alloc_skb+0x96/0x14a0]
__alloc_skb+0x96/0x160
Nov 6 16:45:17 duo kernel: [851621.667650] [netlink_sendmsg+0x27a/0x350]
netlink_sendmsg+0x27a/0x350
Nov 6 16:45:17 duo kernel: [851621.667667] [netlink_unicast+0x24d/0x270]
netlink_unicast+0x24d/0x270
Nov 6 16:45:17 duo kernel: [851621.667680] [sock_sendmsg+0x12b/0x140]
sock_sendmsg+0x12b/0x140
Nov 6 16:45:17 duo kernel: [851621.667703] [<ffffffff80253bf0>]
autoremove_wake_function+0x0/0x30
Nov 6 16:45:17 duo kernel: [851621.667711] [<ffffffff80253bf0>]
autoremove_wake_function+0x0/0x30
Nov 6 16:45:17 duo kernel: [851621.667764] [sys_sendmsg+0x20e/0x360]
sys_sendmsg+0x20e/0x360
Nov 6 16:45:17 duo kernel: [851621.667789] [__up_read+0x21/0xb0]
__up_read+0x21/0xb0
Nov 6 16:45:17 duo kernel: [851621.667797] [do_page_fault+0x1d0/0x840]
do_page_fault+0x1d0/0x840
Nov 6 16:45:17 duo kernel: [851621.667823] [do_brk+0x208/0x2c0]
do_brk+0x208/0x2c0
Nov 6 16:45:17 duo kernel: [851621.667856] [system_call+0x7e/0x83]
system_call+0x7e/0x83
Nov 6 16:45:17 duo kernel: [851621.667880]
Nov 6 16:45:17 duo kernel: [851621.667881]
Nov 6 16:45:17 duo kernel: [851621.667881] Code: 0f 0b eb fe 49 8b 04 24 8b 88
20 01 00 00 c6 80 23 01 00 00
Nov 6 16:45:17 duo kernel: [851621.667892] RIP [skge:skge_up+0x7e0/0x820]
:skge:skge_up+0x7e0/0x820
Nov 6 16:45:17 duo kernel: [851621.667898] RSP <ffff81020e85f868>
Nov 6 16:45:17 duo kernel: [851621.667903] ---[ end trace 39eefca3cc8eccfe ]---
Nov 6 16:45:20 duo kernel: [851624.901017] skge eth0: Link is up at 1000 Mbps,
full duplex, flow control both
-----
I cannot tell if there actually is networking, since the machine is too
brain-dead to support running anything at this point.
This is quite repeatable, but does so much damage to open sessions
(hoses browser history and forms for starters) that I would rather not
poke at it too much. After reverting to the previous kernel version,
the problem went away.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
--
skge causes hard kernel lock on mtu change
https://bugs.launchpad.net/bugs/296542
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