libceph: (re)initialize bio_iter on start of message receive
Previously, we were opportunistically initializing the bio_iter if it appeared to be uninitialized in the middle of the read path. The problem is that a sequence like: - start reading message - initialize bio_iter - read half a message - messenger fault, reconnect - restart reading message - ** bio_iter now non-NULL, not reinitialized ** - read past end of bio, crash Instead, initialize the bio_iter unconditionally when we allocate/claim the message for read. Signed-off-by:Sage Weil <sage@inktank.com> Reviewed-by:
Alex Elder <elder@inktank.com> Reviewed-by:
Yehuda Sadeh <yehuda@inktank.com>
parent
6194ea89
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