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strange oops in iput. (2.6.23.1)

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From: Dave Jones <davej@...>
To: Linux Kernel <linux-kernel@...>
Subject: strange oops in iput. (2.6.23.1)
Date: Thursday, November 15, 2007 - 3:05 pm

I got a report from a user this morning with the following oops.


Unable to handle kernel NULL pointer dereference at 0000000000000038 RIP:

 [<ffffffff810ad479>] iput+0x18/0x7b

PGD 6fdf9067 PUD 7810c067 PMD 0

Oops: 0000 [1] SMP

CPU 1

Modules linked in: berry_charge tun vfat fat usb_storage appletalk ipx p8023 i915 drm dcdbas ipt_MASQUERADE iptable_nat nf_nat bridge rfcomm l2cap autofs4 sunrpc nf_conntrack_netbios_ns ipt_REJECT nf_conntrack_ipv4 xt_state nf_conntrack nfnetlink iptable_filter ip_tables ip6t_REJECT xt_tcpudp ip6table_filter ip6_tables x_tables ipv6 cpufreq_ondemand acpi_cpufreq dm_multipath kvm_intel kvm snd_hda_intel snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq arc4 ecb snd_seq_device blkcipher snd_pcm_oss snd_mixer_oss snd_pcm snd_timer iwl3945 snd_page_alloc mac80211 tg3 snd_hwdep firewire_ohci hci_usb i2c_i801 i2c_core video firewire_core snd option cfg80211 button battery bluetooth ac output usbserial soundcore sg iTCO_wdt crc_itu_t joydev iTCO_vendor_support sr_mod cdrom dm_snapshot dm_zero dm_mirror dm_mod ata_generic ata_piix libata sd_mod scsi_mod ext3 jbd mbcache uhci_hcd ohci_hcd ehci_hcd

Pid: 277, comm: kswapd0 Not tainted 2.6.23.1-42.fc8 #1

RIP: 0010:[<ffffffff810ad479>]  [<ffffffff810ad479>] iput+0x18/0x7b

RSP: 0018:ffff810037f11d60  EFLAGS: 00010283

RAX: 0000000000000000 RBX: ffff81000003fcc8 RCX: ffff81000003fcf8

RDX: ffff81000003fcf8 RSI: ffff8100007c5d50 RDI: ffff81000003fcc8

RBP: 0000000000000001 R08: 0000000000000001 R09: ffff8100007c5b60

R10: 0000000000000282 R11: ffff8100007c5c30 R12: ffff8100007c5d00

R13: 0000000000000060 R14: 0000000000000001 R15: 0000000000000100

FS:  0000000000000000(0000) GS:ffff810037c2c300(0000) knlGS:0000000000000000

CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b

CR2: 0000000000000038 CR3: 000000006f40a000 CR4: 00000000000026a0

DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000

DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400

Process kswapd0 (pid: 277, threadinfo ffff81003...
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Previous thread: [GIT PULL] i2c fixes for 2.6.24 by Jean Delvare on Thursday, November 15, 2007 - 2:50 pm. (1 message)

Next thread: [git pull] scheduler fixes by Ingo Molnar on Thursday, November 15, 2007 - 4:09 pm. (1 message)