Re: kernel BUG at mm/slab.c:610

[Marco Berizzi]

Pekka Enberg wrote:

Hi Pekka,

> So, can you please repost the original oops?

Here is:

Mar 14 03:42:25 Mimosa kernel: ------------[ cut here ]------------
Mar 14 03:42:25 Mimosa kernel: kernel BUG at mm/slab.c:610!
Mar 14 03:42:25 Mimosa kernel: invalid opcode: 0000 [#1]
Mar 14 03:42:25 Mimosa kernel: Modules linked in: sch_sfq sch_htb cls_fw
nf_nat_pptp nf_nat_proto_gre nf_conntrack_pptp nf_conntrack_proto_gre
nf_nat_ftp nf_conntrack_ftp 3c59x mii
Mar 14 03:42:25 Mimosa kernel: CPU:    0
Mar 14 03:42:25 Mimosa kernel: EIP:    0060:[<c014ca99>]    Not tainted
VLI
Mar 14 03:42:25 Mimosa kernel: EFLAGS: 00010046   (2.6.20 #1)
Mar 14 03:42:25 Mimosa kernel: EIP is at free_block+0xd9/0xf0
Mar 14 03:42:25 Mimosa kernel: eax: 00080000   ebx: c1000000   ecx:
c0e7d4e0   edx: c101cfa0
Mar 14 03:42:25 Mimosa kernel: esi: c1210000   edi: c1176560   ebp:
00000000   esp: c119bef0
Mar 14 03:42:25 Mimosa kernel: ds: 007b   es: 007b   ss: 0068
Mar 14 03:42:25 Mimosa kernel: Process events/0 (pid: 3, ti=c119a000
task=c118f030 task.ti=c119a000)
Mar 14 03:42:25 Mimosa kernel: Stack: c1213a10 161c9ed5 c1210010
c1210010 c1210000 161c9ed5 c1176560 c014d201
Mar 14 03:42:25 Mimosa kernel:        00000000 c1180420 c1176560
c1180d60 c014d220 c014d26b 00000000 00000000
Mar 14 03:42:25 Mimosa kernel:        c03b7ae0 c03b7ae0 00000282
c0123d37 00000000 c118f13c 0000007b 0000508b
Mar 14 03:42:25 Mimosa kernel: Call Trace:
Mar 14 03:42:25 Mimosa kernel:  [<c014d201>] drain_array+0x91/0xb0
Mar 14 03:42:25 Mimosa kernel:  [<c014d220>] cache_reap+0x0/0xf0
Mar 14 03:42:25 Mimosa kernel:  [<c014d26b>] cache_reap+0x4b/0xf0
Mar 14 03:42:25 Mimosa kernel:  [<c0123d37>] run_workqueue+0x67/0x130
Mar 14 03:42:25 Mimosa kernel:  [<c0123f3a>] worker_thread+0x13a/0x170
Mar 14 03:42:25 Mimosa kernel:  [<c01123e0>]
default_wake_function+0x0/0x10
Mar 14 03:42:25 Mimosa kernel:  [<c0112427>] __wake_up_common+0x37/0x70
Mar 14 03:42:25 Mimosa kernel:  [<c01123e0>]
default_wake_function+0x0/0x10
Mar 14 03:42:25 Mimosa kernel:  [<c0123e00>] worker_thread+0x0/0x170
Mar 14 03:42:25 Mimosa kernel:  [<c01271a6>] kthread+0xb6/0xc0
Mar 14 03:42:25 Mimosa kernel:  [<c01270f0>] kthread+0x0/0xc0
Mar 14 03:42:25 Mimosa kernel:  [<c01036a3>]
kernel_thread_helper+0x7/0x14
Mar 14 03:42:25 Mimosa kernel:  =======================
Mar 14 03:42:25 Mimosa kernel: Code: ff 83 c4 0c 5b 5e 5f 5d c3 8b 57 20
29 d0 89 da 89 46 18 89 f8 e8 78 f1 ff ff eb da 89 33 8b 46 04 89 5e 04
89 18 89 43 04 eb cb <0f> 0b 90 8d 74 26 00 eb fe 8b 52 0c e9 57 ff ff
ff 8d b6 00 00
Mar 14 03:42:25 Mimosa kernel: EIP: [<c014ca99>] free_block+0xd9/0xf0
SS:ESP 0068:c119bef0

Here is from another machine:

Mar 14 08:53:47 Gemini kernel: ------------[ cut here ]------------
Mar 14 08:53:47 Gemini kernel: kernel BUG at mm/slab.c:610!
Mar 14 08:53:47 Gemini kernel: invalid opcode: 0000 [#1]
Mar 14 08:53:47 Gemini kernel: Modules linked in: nf_nat_pptp
nf_nat_proto_gre nf_conntrack_pptp nf_conntrack_proto_gre nf_nat_ftp
nf_conntrack_ftp 3c59x mii
Mar 14 08:53:47 Gemini kernel: CPU:    0
Mar 14 08:53:47 Gemini kernel: EIP:    0060:[<c014ce86>]    Not tainted
VLI
Mar 14 08:53:47 Gemini kernel: EFLAGS: 00010046   (2.6.20 #1)
Mar 14 08:53:47 Gemini kernel: EIP is at free_block+0xd6/0xf0
Mar 14 08:53:47 Gemini kernel: eax: 80000000   ebx: c1000000   ecx:
c9ae64e0   edx: c1135cc0
Mar 14 08:53:47 Gemini kernel: esi: c1210000   edi: c1176560   ebp:
00000000   esp: c119bef0
Mar 14 08:53:47 Gemini kernel: ds: 007b   es: 007b   ss: 0068
Mar 14 08:53:47 Gemini kernel: Process events/0 (pid: 3, ti=c119a000
task=c118f030 task.ti=c119a000)
Mar 14 08:53:47 Gemini kernel: Stack: c1179a10 110b04c7 c1210010
c1210010 c1210000 110b04c7 c1176560 c014d5f1
Mar 14 08:53:47 Gemini kernel:        00000000 c1180420 c1176560
c1180d60 c014d610 c014d65b 00000000 00000000
Mar 14 08:53:47 Gemini kernel:        c03b7a60 c03b7a60 00000282
c0124157 00000000 c118f13c 00000076 00005e32
Mar 14 08:53:47 Gemini kernel: Call Trace:
Mar 14 08:53:47 Gemini kernel:  [<c014d5f1>] drain_array+0x91/0xb0
Mar 14 08:53:47 Gemini kernel:  [<c014d610>] cache_reap+0x0/0xf0
Mar 14 08:53:47 Gemini kernel:  [<c014d65b>] cache_reap+0x4b/0xf0
Mar 14 08:53:47 Gemini kernel:  [<c0124157>] run_workqueue+0x67/0x130
Mar 14 08:53:47 Gemini kernel:  [<c012435a>] worker_thread+0x13a/0x170
Mar 14 08:53:47 Gemini kernel:  [<c0112810>]
default_wake_function+0x0/0x10
Mar 14 08:53:47 Gemini kernel:  [<c0112857>] __wake_up_common+0x37/0x70
Mar 14 08:53:47 Gemini kernel:  [<c0112810>]
default_wake_function+0x0/0x10
Mar 14 08:53:47 Gemini kernel:  [<c0124220>] worker_thread+0x0/0x170
Mar 14 08:53:47 Gemini kernel:  [<c01275c6>] kthread+0xb6/0xc0
Mar 14 08:53:47 Gemini kernel:  [<c0127510>] kthread+0x0/0xc0
Mar 14 08:53:47 Gemini kernel:  [<c01036c7>]
kernel_thread_helper+0x7/0x10
Mar 14 08:53:47 Gemini kernel:  =======================
Mar 14 08:53:47 Gemini kernel: Code: ff 83 c4 0c 5b 5e 5f 5d c3 8b 57 20
29 d0 89 da 89 46 18 89 f8 e8 7b f1 ff ff eb da 89 33 8b 46 04 89 5e 04
89 18 89 43 04 eb cb <0f> 0b 90 8d b4 26 00 00 00 00 eb fe 8b 52 0c e9
57 ff ff ff 8d
Mar 14 08:53:47 Gemini kernel: EIP: [<c014ce86>] free_block+0xd6/0xf0
SS:ESP 0068:c119bef0

> Also, please enable
> CONFIG_DEBUG_SLAB  and try to reproduce. Thanks.

I'm rebuilding all kernel with this option (2.6.20.3)

Thanks for the feedback.


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