Oops in inotify

[Marius Gedminas]

A few minutes ago Evolution froze when I was trying to save an
attachment.  I looked at dmesg and saw this:

Unable to handle kernel NULL pointer dereference at virtual address 00000008
 printing eip:
c01ef315
*pde = 00000000
Oops: 0000 [#1]
PREEMPT
Modules linked in: button usbhid uhci_hcd e100 nls_cp775 smbfs hfs hfsplus ntfs nls_cp437 vfat fat isofs nls_utf8 udf rfcomm l2cap bluetooth speedstep_smi speedstep_lib proc_intf freq_table cpufreq_userspace cpufreq_ondemand cpufreq_powersave pcmcia autofs4 ac battery af_packet ipv6 mii sd_mod yenta_socket pcmcia_core snd_intel8x0 snd_ac97_codec snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd soundcore snd_page_alloc i2c_i801 i2c_core hw_random usb_storage scsi_mod usbcore shpchp pci_hotplug intel_agp agpgart irtty_sir sir_dev irda crc_ccitt rtc pcspkr md dm_mod capability commoncap nvram parport_pc lp parport evdev tsdev ide_cd cdrom mousedev psmouse ext3 jbd mbcache ide_generic piix ide_disk ide_core unix thermal processor fan fbcon crc32 font bitblit vesafb cfbcopyarea cfbimgblt cfbfillrect
CPU:    0
EIP:    0060:[<c01ef315>]    Not tainted VLI
EFLAGS: 00210287   (2.6.10-2-686)
EIP is at inotify_dev_queue_event+0x74/0x15e
eax: 00000000   ebx: d9eebd60   ecx: 00000800   edx: d90576a8
esi: 00000800   edi: d289a958   ebp: 00000000   esp: c6bb1e8c
ds: 007b   es: 007b   ss: 0068
Process evolution (pid: 4195, threadinfo=c6bb0000 task=dd38c060)
Stack: d4150600 000f6f0f dd38c060 dd38c1c0 d289a958 00000000 d90576a8 c6bb0000
       d90576a8 d289a958 00000000 c01ef981 d9eebd60 d90576a8 00000800 00000000
       d289a958 00000000 000081a4 dfd9c300 d289a8f4 c01612a6 dfd9c300 00000800
Call Trace:
 [<c01ef981>] inotify_inode_queue_event+0x57/0x8c
 [<c01612a6>] vfs_create+0xeb/0x16c
 [<c0161b2e>] open_namei+0x5b4/0x605
 [<c0151c29>] filp_open+0x3e/0x64
 [<c0151ea8>] get_unused_fd+0x37/0xdf
 [<c015200a>] sys_open+0x44/0xc6
 [<c0102e95>] sysenter_past_esp+0x52/0x75
Code: 0f 87 a5 00 00 00 0f 84 b3 00 00 00 81 f9 00 20 00 00 74 2f 81 f9 00 80 00 00 74 27 8b 54 24 18 89 ce 8b 42 08 8b 80 0c 01 00 00 <23> 70 08 85 f6 74 79 81 f9 00 80 00 00 74 09 89 c8 23 42 04 85
 <6>note: evolution[4195] exited with preempt_count 1

I use an Ubuntu kernel (linux-image-2.6.10-2-686, version 2.6.10-10).  uname -a says

  Linux perlas 2.6.10-2-686 #1 Wed Jan 19 18:58:12 UTC 2005 i686 GNU/Linux


Marius Gedminas
-- 
9. Okay, then, what do you think about "syntactic noise" in config files?

!@#@!#(#%^!%$@#';,!@# 
	-- http://open.nit.ca/wiki/index.php?page=RetchMail
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