From: Ingo Molnar <mingo@elte.hu>
To: Vegard Nossum <vegard.nossum@gmail.com>
Cc: linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
Pekka Enberg <penberg@cs.helsinki.fi>,
"Rafael J. Wysocki" <rjw@sisk.pl>
Subject: Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison overwritten
Date: Fri, 18 Jul 2008 02:01:30 +0200 [thread overview]
Message-ID: <20080718000130.GA24013@elte.hu> (raw)
In-Reply-To: <20080717235254.GA6833@elte.hu>
two other ones:
kmemcheck: Caught 32-bit read from uninitialized memory (f459ac00)
uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu
^
Pid: 1614, comm: kjournald Not tainted (2.6.26-tip #20187)
EIP: 0060:[<c05ea904>] EFLAGS: 00010216 CPU: 0
EIP is at skb_copy_bits+0x54/0x220
EAX: 00000110 EBX: 00000110 ECX: 00000044 EDX: f6c256c0
ESI: f459ac00 EDI: f459a000 EBP: c09b9f60 ESP: c09de048
DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
CR0: 8005003b CR2: f71c2700 CR3: 2e849000 CR4: 000006d0
DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
DR6: ffff4ff0 DR7: 00000400
[<c05ebe28>] skb_copy+0x78/0x90
[<c05f9426>] neigh_timer_handler+0x156/0x2c0
[<c012ba62>] run_timer_softirq+0x142/0x180
[<c0129092>] __do_softirq+0x82/0xf0
[<c0105b8a>] call_on_stack+0x1a/0x30
[<ffffffff>] 0xffffffff
plus:
kmemcheck: Caught 32-bit read from uninitialized memory (f654b590)
iiiiiiiiiiiiiiiiuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu
^
Pid: 3130, comm: git-read-tree Not tainted (2.6.26-tip #20187)
EIP: 0060:[<c05eb396>] EFLAGS: 00010286 CPU: 0
EIP is at pskb_expand_head+0x86/0x150
EAX: 00000140 EBX: f6763124 ECX: 00000027 EDX: f6549400
ESI: f654b590 EDI: f6549650 EBP: c09b9a80 ESP: c09dfa28
DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
CR0: 8005003b CR2: f71c2700 CR3: 2e849000 CR4: 000006d0
DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
DR6: ffff4ff0 DR7: 00000400
[<c05eb67d>] __pskb_pull_tail+0x21d/0x300
[<c03b45dd>] e1000_xmit_frame+0x1fd/0xa60
[<c05f0fd4>] dev_hard_start_xmit+0x254/0x2e0
[<c0609721>] __qdisc_run+0x61/0x1b0
[<c05f383e>] dev_queue_xmit+0x25e/0x340
[<c061f315>] ip_finish_output+0x105/0x260
[<c061f739>] ip_output+0x49/0x50
[<c061debd>] ip_local_out+0x1d/0x30
[<c061fa85>] ip_queue_xmit+0x1a5/0x340
[<c062ffd3>] tcp_transmit_skb+0x443/0x800
[<c06316aa>] __tcp_push_pending_frames+0xfa/0x730
[<c062ee58>] tcp_rcv_established+0x3b8/0x6f0
[<c0634f50>] tcp_v4_do_rcv+0x2d0/0x510
[<c063720e>] tcp_v4_rcv+0x58e/0x660
[<c061b5ac>] ip_local_deliver+0x4c/0x180
[<c061b99e>] ip_rcv+0x2be/0x570
[<c05f08d3>] netif_receive_skb+0x333/0x400
[<c03b2aa7>] e1000_receive_skb+0x47/0x180
[<c03b3983>] e1000_clean_rx_irq+0x223/0x2e0
[<c03b225b>] e1000_clean+0x5b/0x200
[<c05f29db>] net_rx_action+0xfb/0x160
[<c0129092>] __do_softirq+0x82/0xf0
[<c0105b8a>] call_on_stack+0x1a/0x30
[<ffffffff>] 0xffffffff
again, from the RX path, likely false positives. We've got to fix these
false positives to make automated debugging easier.
Ingo
next prev parent reply other threads:[~2008-07-18 0:02 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-17 21:42 [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison overwritten Ingo Molnar
2008-07-17 21:45 ` David Miller
2008-07-17 22:06 ` Ingo Molnar
2008-07-17 22:09 ` David Miller
2008-07-17 22:43 ` Ingo Molnar
2008-07-17 23:15 ` Vegard Nossum
2008-07-17 23:35 ` Vegard Nossum
2008-07-17 23:52 ` Ingo Molnar
2008-07-18 0:01 ` Ingo Molnar [this message]
2008-07-18 0:05 ` Vegard Nossum
2008-07-18 0:16 ` Ingo Molnar
2008-07-18 2:13 ` David Miller
2008-07-18 2:03 ` David Miller
2008-07-18 7:03 ` Vegard Nossum
2008-07-18 7:12 ` David Miller
2008-07-18 9:05 ` Ingo Molnar
2008-07-18 19:10 ` [bug] Attempt to release alive inet socket f6fac040 Ingo Molnar
2008-07-18 19:55 ` Ingo Molnar
2008-07-17 23:27 ` [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison overwritten Vegard Nossum
2008-07-17 23:56 ` Ingo Molnar
2008-07-21 11:41 ` Vegard Nossum
2008-07-18 5:46 ` Evgeniy Polyakov
2008-07-18 9:02 ` Pekka Enberg
2008-07-18 9:09 ` Ingo Molnar
2008-07-18 9:15 ` Pekka Enberg
2008-07-18 10:16 ` Evgeniy Polyakov
2008-07-18 14:44 ` Pekka Enberg
2008-07-18 14:48 ` Christoph Lameter
2008-07-18 16:07 ` Evgeniy Polyakov
2008-07-18 9:00 ` Pekka J Enberg
2008-07-18 9:11 ` Ingo Molnar
2008-07-18 9:16 ` Pekka Enberg
2008-07-18 13:54 ` Christoph Lameter
2008-07-21 9:41 ` Ingo Molnar
2008-07-21 9:52 ` Pekka Enberg
2008-07-21 9:52 ` Pekka Enberg
2008-07-21 10:06 ` Evgeniy Polyakov
2008-07-21 10:50 ` Ingo Molnar
2008-07-21 11:03 ` Vegard Nossum
2008-07-21 11:13 ` Ingo Molnar
2008-07-21 16:19 ` Christoph Lameter
2008-07-21 20:23 ` Vegard Nossum
2008-07-21 11:25 ` Evgeniy Polyakov
2008-07-21 11:55 ` Ingo Molnar
2008-07-21 12:57 ` Evgeniy Polyakov
2008-07-21 14:01 ` Ingo Molnar
2008-07-21 19:21 ` Ingo Molnar
2008-07-21 21:24 ` Evgeniy Polyakov
2008-07-21 23:33 ` David Miller
2008-07-22 7:50 ` Ingo Molnar
2008-07-22 13:34 ` Ingo Molnar
2008-07-23 22:31 ` David Miller
2008-07-23 22:40 ` Jeff Kirsher
2008-07-21 16:22 ` Christoph Lameter
2008-07-21 19:57 ` Evgeniy Polyakov
2008-07-21 20:05 ` Ingo Molnar
2008-07-21 20:22 ` Vegard Nossum
2008-07-18 13:55 ` Christoph Lameter
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