gfs2-utils: master - gfs2_edit: fix segfault in set_bitmap when block is in rgrp
Bob Peterson
rpeterso at fedoraproject.org
Thu Feb 3 18:31:41 UTC 2011
Gitweb: http://git.fedorahosted.org/git/gfs2-utils.git?p=gfs2-utils.git;a=commitdiff;h=897437313adc8801b38ea42abc4fd07bd486ce3e
Commit: 897437313adc8801b38ea42abc4fd07bd486ce3e
Parent: 7acf4bd2e7176cabf87d47f0c4d8677f99e08544
Author: Bob Peterson <rpeterso at redhat.com>
AuthorDate: Thu Feb 3 12:18:49 2011 -0600
Committer: Bob Peterson <rpeterso at redhat.com>
CommitterDate: Thu Feb 3 12:27:44 2011 -0600
gfs2_edit: fix segfault in set_bitmap when block is in rgrp
If you called libgfs2 function gfs2_set_bitmap to set a bit but
specified a block outside the data blocks, it would segfault.
rhbz#674843
---
gfs2/libgfs2/fs_bits.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/gfs2/libgfs2/fs_bits.c b/gfs2/libgfs2/fs_bits.c
index 7d37d57..97172df 100644
--- a/gfs2/libgfs2/fs_bits.c
+++ b/gfs2/libgfs2/fs_bits.c
@@ -170,7 +170,7 @@ int gfs2_set_bitmap(struct gfs2_sbd *sdp, uint64_t blkno, int state)
rgd = gfs2_blk2rgrpd(sdp, blkno);
- if(!rgd)
+ if(!rgd || blkno < rgd->ri.ri_data0)
return -1;
rgrp_block = (uint32_t)(blkno - rgd->ri.ri_data0);
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