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Bug#646866: NULL dereference (BUG) after 'find /sys'



Dnia Fri, 2 Dec 2011 18:46:59 -0600
Jonathan Nieder <jrnieder@gmail.com> napisał(a):

> Ben Hutchings wrote:
> > On Thu, 2011-10-27 at 23:15 +0200, bla wrote:
> 
> >> BUG: unable to handle kernel NULL pointer dereference at (null)
> >> IP: [<c113b852>] strlen+0x8/0x11
> >> *pde = 00000000 
> >> Oops: 0000 [#1] SMP 
> >> last sysfs file: /sys/devices/system/cpu/cpu1/cache/index2/shared_cpu_map
> [...]
> >> Call Trace:
> >>  [<c10f3a2a>] ? sysfs_readdir+0xe0/0x13a
> >>  [<c10be348>] ? filldir64+0x0/0xc5
> >>  [<c10be5db>] ? vfs_readdir+0x62/0x8c
> >>  [<c10be348>] ? filldir64+0x0/0xc5
> >>  [<c10be66b>] ? sys_getdents64+0x66/0xa5
> >>  [<c10030fb>] ? sysenter_do_call+0x12/0x28
> >> Code: eb 04 19 c0 0c 01 5e 5f c3 56 89 c6 89 d0 88 c4 ac 38 e0 74 09 84 c0 75 f7 be 01 00 00 00 89 f0 48 5e c3 57 83 c9 ff 89 c7 31 c0 <f2> ae f7 d1 49 89 c8 5f c3 57 31 ff 85 c9 74 0e 89 c7 89 d0 f2 
> >> EIP: [<c113b852>] strlen+0x8/0x11 SS:ESP 0068:dc373f4c
> >> CR2: 0000000000000000
> >> ---[ end trace 3cc3dd6f2ee885e8 ]---
> [...]
> >> Happened after executing: find /sys -iname "*coale*"
> [...]
> > Please test whether this happens without the VirtualBox modules loaded.
> 
> Ping.  Was this reproducible at all?

Never happened later after those two incidents. Neither with vboxdrv,
nor without. I was trying to reproduce it but without much success.


-- 
Tomasz bla Fortuna
jid: bla(at)af.gliwice.pl
pgp: 0x90746E79 @ pgp.mit.edu
www: http://bla.thera.be

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