Commit f5ef3c10 authored Jan 08, 2006 by Eric Van Hensbergen Committed by Linus Torvalds Jan 08, 2006

[PATCH] v9fs: fix fd_close



If a 9pfs server crashes, v9fs_fd_close() is called.  Subsequently, in
cleaning up by performing a umount() on the FS that was provided by this
server v9fs_fd_close() is called again, and uses the old, freed valus of
trans->priv.  This patch ensures that trans->priv can be freed only once,
otherwise this function bails early.

Signed-off-by: Michal Ostrowski <mostrows@watson.ibm.com>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

parent 7e7f358c

fs/9p/trans_fd.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -148,12 +148,12 @@ static void v9fs_fd_close(struct v9fs_transport *trans)
		if (!trans)
		return;

		trans->status = Disconnected;
		ts = trans->priv;
		ts = xchg(&trans->priv, NULL);

		if (!ts)
		return;

		trans->status = Disconnected;
		if (ts->in_file)
		fput(ts->in_file);