Messages in this thread Patch in this message | | | From | Steven Whitehouse <> | Subject | [PATCH 25/27] GFS2: Fix infinite loop in rbm_find | Date | Wed, 26 Sep 2012 09:25:46 +0100 |
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From: Bob Peterson <rpeterso@redhat.com>
This patch fixes an infinite loop in gfs2_rbm_find that was introduced by the previous patch. The problem occurred when the length was less than 3 but the rbm block was byte-aligned, causing it to improperly return a extent length of zero, which caused it to spin.
Signed-off-by: Bob Peterson <rpeterso@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com> Tested-by: Bob Peterson <rpeterso@redhat.com> Tested-by: Barry Marson <bmarson@redhat.com>
diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c index b933cdc..3cc402c 100644 --- a/fs/gfs2/rgrp.c +++ b/fs/gfs2/rgrp.c @@ -329,6 +329,7 @@ static u32 gfs2_free_extlen(const struct gfs2_rbm *rrbm, u32 len) gfs2_unaligned_extlen(&rbm, 4 - n_unaligned, &len)) goto out; + n_unaligned = len & 3; /* Start is now byte aligned */ while (len > 3) { start = rbm.bi->bi_bh->b_data; -- 1.7.4
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