[Bug 242012] Re: BUG: Oops when trying to use NFS with autofs

[Rich]

Oh, the second trace, for reference:
[  508.196893] BUG: unable to handle kernel NULL pointer dereference at virtual address 0000006a
[  508.196905] printing eip: c01a7c39 *pde = 00000000 
[  508.196914] Oops: 0000 [#1] SMP 
[  508.196920] Modules linked in: udf binfmt_misc af_packet ipv6 ppdev autofs4 sbs sbshc speedstep_centrino dock cpufreq_userspace container cpufreq_stats cpufreq_powersave cpufreq_ondemand freq_table cpufreq_conservative nfs lockd nfs_acl sunrpc iptable_filter ip_tables x_tables sbp2 parport_pc lp parport pcmcia joydev snd_intel8x0 snd_ac97_codec ac97_bus snd_pcm_oss snd_pcm snd_mixer_oss nvidia(P) snd_seq_dummy video output i2c_core snd_seq_oss snd_seq_midi snd_rawmidi ipw2200 sdhci yenta_socket snd_seq_midi_event ieee80211 rsrc_nonstatic serio_raw ieee80211_crypt mmc_core pcmcia_core snd_seq button snd_timer snd_seq_device battery ac snd intel_agp shpchp soundcore agpgart pci_hotplug dcdbas iTCO_wdt iTCO_vendor_support snd_page_alloc evdev psmouse ext3 jbd mbcache sg sr_mod cdrom sd_mod ata_piix pata_acpi ahci b44 ata_generic libata scsi_mod ohci1394 ieee1394 ssb mii ehci_hcd uhci_hcd usbcore raid10 raid456 async_xor async_memcpy async_tx xor raid1 raid0 multipath linear md_mod dm_mirror dm_snapshot dm_mod thermal processor fan fbcon tileblit font bitblit softcursor fuse
[  508.197058] 
[  508.197063] Pid: 8994, comm: mount.nfs Tainted: P        (2.6.24-19-generic #1)
[  508.197070] EIP: 0060:[<c01a7c39>] EFLAGS: 00010206 CPU: 0
[  508.197081] EIP is at graft_tree+0x39/0xf0
[  508.197085] EAX: f654b2a8 EBX: ffffffec ECX: 00000000 EDX: f4ea5f2c
[  508.197091] ESI: f408dc00 EDI: f4ea5f2c EBP: 00000023 ESP: f4ea5e04
[  508.197096]  DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
[  508.197102] Process mount.nfs (pid: 8994, ti=f4ea4000 task=f53dd700 task.ti=f4ea4000)
[  508.197107] Stack: f4ea5f2c f4ea5f30 f408dc00 c01a7fd2 00200006 f408dc00 f4a6b000 f6146000 
[  508.197119]        c01a90eb 00000000 f5439000 00000023 f4ea5eac 00000000 f48346c0 c02eb79c 
[  508.197131]        00000001 dfa19ce0 dfa19c80 f79d4660 00000025 f6502a80 0000014e f780713c 
[  508.197142] Call Trace:
[  508.197156]  [<c01a7fd2>] do_add_mount+0x72/0x100
[  508.197175]  [<c01a90eb>] do_mount+0x5fb/0x700
[  508.197195]  [<c02eb79c>] ip4_datagram_connect+0x23c/0x370
[  508.197226]  [<c016da2f>] find_lock_page+0x2f/0xb0
[  508.197248]  [<c016ff76>] filemap_fault+0x216/0x420
[  508.197260]  [<c021ad80>] copy_to_user+0x30/0x60
[  508.197282]  [<c0121084>] kunmap_atomic+0x84/0xb0
[  508.197289]  [<c012103d>] kunmap_atomic+0x3d/0xb0
[  508.197317]  [<c01206ad>] fixup_exception+0x1d/0x60
[  508.197352]  [<c01730d0>] __alloc_pages+0x60/0x3a0
[  508.197364]  [<c031df80>] do_page_fault+0x0/0x730
[  508.197399]  [<c01a79f0>] copy_mount_options+0x40/0x140
[  508.197420]  [<c01a9807>] sys_mount+0x77/0xb0
[  508.197441]  [<c01043c2>] sysenter_past_esp+0x6b/0xa9
[  508.197465]  [<c0310000>] unix_stream_sendmsg+0x1a0/0x390
[  508.197488]  =======================
[  508.197491] Code: 04 89 c6 89 7c 24 08 8b 40 14 89 d7 8b 40 30 85 c0 79 11 89 d8 8b 74 24 04 8b 1c 24 8b 7c 24 08 83 c4 0c c3 8b 02 b3 ec 8b 48 0c <0f> b7 41 6a 25 00 f0 00 00 3d 00 40 00 00 8b 46 10 0f 94 c2 8b 
[  508.197546] EIP: [<c01a7c39>] graft_tree+0x39/0xf0 SS:ESP 0068:f4ea5e04
[  508.197557] ---[ end trace 73d5689021f7d634 ]---

-- 
BUG: Oops when trying to use NFS with autofs
https://bugs.launchpad.net/bugs/242012
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