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SubjectRe: [PATCH] devfs v199.8 available
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>>>>> "richard" == Richard Gooch <rgooch@ras.ucalgary.ca> writes:

richard> Hi, all. Version 199.8 of my devfs patch is now available from:
richard> http://www.atnf.csiro.au/~rgooch/linux/kernel-patches.html
richard> The devfs FAQ is also available here.

richard> Patch directly available from:
richard> ftp://ftp.??.kernel.org/pub/linux/kernel/people/rgooch/v2.4/devfs-patch-current.gz

richard> AND:
richard> ftp://ftp.atnf.csiro.au/pub/people/rgooch/linux/kernel-patches/v2.4/devfs-patch-current.gz

richard> This is against 2.4.18-pre4. Highlights of this release:

richard> - Fixed deadlock bug in <devfs_d_revalidate_wait>



I still has that bug with 2.4.18-pre7, and it has this patch applied.

stack traces are:

p1:
schedule()
devfs_de_revalidate_wait()
cached_lookup()
lookup_hash()
sys_unlink()
system_call()

p2:

schedule()
wait_for_devfsd_finished()
devfs_lookup(()
lookup_hash()
unix_bind()
sys_bind()
sys_socketcall()
system_call()

the thing that they are tring to create/remove is /dev/log.

And devfsd is already running in that state:

__schedule()
__down()
__down_failed()
__text_lock_namei()

This has worked normally until now, it has beggining to fail yesterday.

Later, Juan.




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In theory, practice and theory are the same, but in practice they
are different -- Larry McVoy
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