From: Josh Durgin Date: Tue, 27 Aug 2013 21:45:46 +0000 (-0700) Subject: rbd: fix buffer size for writes to images with snapshots X-Git-Tag: v3.12-rc1~90^2~10 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=03507db631c94a48e316c7f638ffb2991544d617;p=pandora-kernel.git rbd: fix buffer size for writes to images with snapshots rbd_osd_req_create() needs to know the snapshot context size to create a buffer large enough to send it with the message front. It gets this from the img_request, which was not set for the obj_request yet. This resulted in trying to write past the end of the front payload, hitting this BUG: libceph: BUG_ON(p > msg->front.iov_base + msg->front.iov_len); Fix this by associating the obj_request with its img_request immediately after it's created, before the osd request is created. Fixes: http://tracker.ceph.com/issues/5760 Suggested-by: Alex Elder Signed-off-by: Josh Durgin Reviewed-by: Alex Elder --- Reading git-diff-tree failed