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Date: Wed, 19 Dec 2007 23:48:09 -0500
From: Miles Lane <miles.lane@gmail.com>
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To: Andrew Morton <akpm@linux-foundation.org>,
       LKML <linux-kernel@vger.kernel.org>
Subject: Re: OOPS: 2.6.24-rc5-mm1 -- EIP is at r_show+0x2a/0x70  --  (triggered
 by "cat /proc/iomem")
References: <a44ae5cd0712192040k7480682eoa29f33d70a91c618@mail.gmail.com>
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Okay.  The command that directly triggers this is:       cat /proc/iomem

Here is the stack trace without the line-wrapping (sorry!):

[  251.602965] wlan0_rename: RX non-WEP frame, but expected encryption
[  252.868386] BUG: unable to handle kernel NULL pointer dereference at 
virtual address 00000018
[  252.868393] printing ip: c012d527 *pde = 00000000
[  252.868399] Oops: 0000 [#1] SMP
[  252.868403] last sysfs file: 
/sys/devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda/sda3/stat
[  252.868407] Modules linked in: aes_i586 aes_generic i915 drm rfcomm 
l2cap bluetooth acpi_cpufreq cpufreq_stats cpufreq_conservative sbs 
sbshc dm_crypt sbp2 parport_pc lp parport arc4 ecb crypto_blkcipher 
cryptomgr crypto_algapi snd_hda_intel snd_pcm_oss snd_mixer_oss pcmcia 
snd_pcm iTCO_wdt iTCO_vendor_support snd_seq_dummy watchdog_core 
watchdog_dev snd_seq_oss snd_seq_midi tifm_7xx1 snd_rawmidi iwl3945 
snd_seq_midi_event rng_core tifm_core mac80211 snd_seq snd_timer 
snd_seq_device cfg80211 sky2 battery yenta_socket rsrc_nonstatic 
pcmcia_core ac snd soundcore snd_page_alloc button shpchp pci_hotplug 
sr_mod cdrom pata_acpi piix ide_core firewire_ohci firewire_core 
crc_itu_t thermal processor fan
[  252.868469]
[  252.868472] Pid: 7088, comm: head Not tainted (2.6.24-rc5-mm1 #9)
[  252.868476] EIP: 0060:[<c012d527>] EFLAGS: 00010297 CPU: 0
[  252.868481] EIP is at r_show+0x2a/0x70
[  252.868483] EAX: 00000000 EBX: 00000001 ECX: c07e3224 EDX: c04bb034
[  252.868486] ESI: 00000008 EDI: ed1f52c0 EBP: f5320f10 ESP: f5320f04
[  252.868489]  DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
[  252.868493] Process head (pid: 7088, ti=f5320000 task=f532e000 
task.ti=f5320000)
[  252.868495] Stack: c03a6cac ed1f52c0 c07e3224 f5320f50 c0199a7e 
00002000 bf930807 e1007800
[  252.868504]        ed1f52e0 00000000 00000000 000001d3 0000000e 
00000000 0000000d 00000000
[  252.868512]        fffffffb f7d39370 c01998e4 f5320f74 c01af4f5 
f5320f9c 00002000 bf930807
[  252.868521] Call Trace:
[  252.868523]  [<c0107d55>] show_trace_log_lvl+0x12/0x25
[  252.868529]  [<c0107df2>] show_stack_log_lvl+0x8a/0x95
[  252.868534]  [<c0107e89>] show_registers+0x8c/0x154
[  252.868538]  [<c010805f>] die+0x10e/0x1d2
[  252.868542]  [<c039c8c9>] do_page_fault+0x52b/0x600
[  252.868547]  [<c039af9a>] error_code+0x72/0x78
[  252.868552]  [<c0199a7e>] seq_read+0x19a/0x26c
[  252.868557]  [<c01af4f5>] proc_reg_read+0x60/0x74
[  252.868562]  [<c018390d>] vfs_read+0xa2/0x11e
[  252.868567]  [<c0183d02>] sys_read+0x3b/0x60
[  252.868571]  [<c0106bae>] sysenter_past_esp+0x6b/0xc1
[  252.868575]  =======================
[  252.868577] Code: c3 55 89 d1 89 e5 57 89 c7 56 53 8b 50 64 83 7a 0c 
00 77 0e 81 7a 08 ff ff 00 00 be 04 00 00 00 76 05 be 08 00 00 00 89 c8 
31 db <8b> 40 18 39 d0 74 06 43 83 fb 05 75 f3 8b 41 10 ba 2f 1b 45 c0
[  252.868623] EIP: [<c012d527>] r_show+0x2a/0x70 SS:ESP 0068:f5320f04


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