Commit f5ef3c10 authored by Eric Van Hensbergen's avatar Eric Van Hensbergen Committed by Linus Torvalds
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[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: default avatarMichal Ostrowski <mostrows@watson.ibm.com>
Signed-off-by: default avatarEric Van Hensbergen <ericvh@gmail.com>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 7e7f358c
......@@ -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);
......
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