Messages in this thread | | | Date | Thu, 21 Feb 2008 09:33:22 -0800 | From | Randy Dunlap <> | Subject | Re: 2.6.25-rc2-git4 BUG: sysfs_readdir |
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Greg KH wrote: > On Thu, Feb 21, 2008 at 08:25:53AM -0800, Randy Dunlap wrote: >> One of my (x86_64) test machines got this on booting 2.6.25-rc2-git4. >> >> insmod used greatest stack depth: 4144 bytes left >> EXT3-fs: INFO: recovery required on readonly filesystem. >> EXT3-fs: write access will be enabled during recovery. >> kjournald starting. Commit interval 5 seconds >> EXT3-fs: recovery complete. >> EXT3-fs: mounted filesystem with ordered data mode. >> modprobe used greatest stack depth: 3600 bytes left >> BUG: unable to handle kernel NULL pointer dereference at 0000000000000000 >> IP: [<ffffffff802d0f16>] sysfs_readdir+0xe0/0x13f > > That's really wierd, as nothing has changed in this area in a while now. > did 2.6.25-rc2 work for you ok?
Yes, all previous 2.6.25-versions worked for me.
> Can you enable CONFIG_DEBUG_KOBJECT and see if the kernel log shows you > what is happening here? Hm, that's only going to tell you what files > were created, not what was being read from sysfs... > > How about adding the patch at: > http://www.kernel.org/pub/linux/kernel/people/gregkh/gregkh-2.6/gregkh-01-driver/sysfs-crash-debugging.patch > which has been in -mm for forever that will add the last-accessed sysfs > file to the oops report. That might give us more information here.
I'll try those, but I doubt that this is easily reproducible.
-- ~Randy
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