Messages in this thread | | | From | Neil Brown <> | Date | Tue, 12 Jun 2001 12:32:07 +1000 (EST) | Subject | Re: NFS PANIC and FIX in 2.4 |
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On Saturday June 9, James.Bottomley@SteelEye.com wrote: > Hi All, > > I get this panic running RedHat 2.4.3-6: > > Unable to handle kernel NULL pointer dereference at virtual address 00000004 > c014b13d
.... > > The problem is pretty specific to 2.4.3-6 because it has code in list_del() to > null out the prev and next pointers (I don't know where they picked it up, but > its gone in 2.4.5). However, it exposes a bug in NFS, namely that d_splice() > also calls list_del() on tdentry->d_child. This shouldn't be done because it > makes the d_child list invalid, so any subsequent call to list_del on d_child > could panic. I think the correct fix (attached below) is to change the NFS > list_del to list_del_init.
Yep, that looks good. I'll forward it to Linus with a few other fixes I have pending.
Thanks,
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