]> pilppa.com Git - linux-2.6-omap-h63xx.git/commit
relayfs: fix infinite loop with splice()
authorTom Zanussi <zanussi@comcast.net>
Tue, 9 Dec 2008 21:14:10 +0000 (13:14 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Wed, 10 Dec 2008 16:01:52 +0000 (08:01 -0800)
commitfbb5b7ae4b442f1923513dc6165a66c7a7f29073
treee49f1c838a58912a36d03e12d1dab44d2df439d6
parent361371201b60ffd686a694c848c1d5ad6061725f
relayfs: fix infinite loop with splice()

Running kmemtraced, which uses splice() on relayfs, causes a hard lock on
x86-64 SMP.  As described by Tom Zanussi:

  It looks like you hit the same problem as described here:

  commit 8191ecd1d14c6914c660dfa007154860a7908857

      splice: fix infinite loop in generic_file_splice_read()

  relay uses the same loop but it never got noticed or fixed.

Cc: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Tested-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Tom Zanussi <tzanussi@gmail.com>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
kernel/relay.c