Re: kern/47739: tmpfs panic: kernel diagnostic assertion "(node)->tn_spec.tn_dir.tn_readdir_lastp == NULL..."

[Taylor R Campbell <riastradh%NetBSD.org@localhost>]

The following reply was made to PR kern/47739; it has been noted by GNATS.

From: Taylor R Campbell <riastradh%NetBSD.org@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: 
Subject: Re: kern/47739: tmpfs panic: kernel diagnostic assertion 
"(node)->tn_spec.tn_dir.tn_readdir_lastp == NULL..."
Date: Wed, 24 Jul 2013 14:22:54 +0000

 I don't see any obvious mismanagement of the tn_readdir fields, so
 this is probably some other kind of corruption.
 
 Wild guess: tmpfs_rmdir is missing cache_purge(vp), and something is
 trying to list a directory that just got rmdir'd.
 
 I'm puzzled by the `WARNING: SPL NOT LOWERED' messages in prlw1's
 dmesg.  The syscalls it reports (chroot and recv) don't seem to me to
 be related to tmpfs.  wiz, do you see those messages too, or do you
 have DIAGNOSTIC disabled, or are they a red herring for the tmpfs
 issue?