Messages in this thread |  | | Date | Tue, 2 Jan 2001 19:54:15 -0800 (PST) | From | Linus Torvalds <> | Subject | Re: Oops in prune_dcache (2.4.0-prerelease) |
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On Wed, 3 Jan 2001, Udo A. Steinberg wrote: > > While under massive disk and cpu load, 2.4.0-prerelease produced > the following oops (decode see below)
Hmm.. If I'm not mistaken, this is in dentry_iput() (inline function called by prune_one_dentry(), which is _also_ an inline function, which is why it gets reported as being in prune_dcache):
if (dentry->d_op && dentry->d_op->d_iput) dentry->d_op->d_iput(dentry, inode);
and it looks like your dentry->d_op has a value of 0x01000000, so when we load the d_op->d_iput pointer, we get a page fault.
The strange thing is that 0x01000000 value, which almost certainly should just be NULL. A one-bit error.
Now, I assume this machine has been historically stable, with no history of memory corruption problems.. It's entirely possible (and likely) that the one-bit error is due to some wild kernel pointer. Which makes this _really_ hard to debug.
I'll try to think about it some more, but I'd love to have more reports to go on to try to find a pattern..
Linus
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