sunrpc/cache: drop reference when sunrpc_cache_pipe_upcall() detects a race

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commit a6ab1e8126 upstream.

sunrpc_cache_pipe_upcall() can detect a race if CACHE_PENDING is no longer
set.  In this case it aborts the queuing of the upcall.
However it has already taken a new counted reference on "h" and
doesn't "put" it, even though it frees the data structure holding the reference.

So let's delay the "cache_get" until we know we need it.

Fixes: f9e1aedc6c ("sunrpc/cache: remove races with queuing an upcall.")
Signed-off-by: NeilBrown <neilb@suse.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

...

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NeilBrown 2016-03-04 17:20:13 +11:00 • committed by Ben Hutchings

parent a4950109e5

commit 503d737771

1 changed files with 3 additions and 3 deletions

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net/sunrpc/cache.c

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