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author | Qu Wenruo <quwenruo@cn.fujitsu.com> | 2015-01-06 17:30:44 +0800 |
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committer | David Sterba <dsterba@suse.cz> | 2015-01-09 18:46:16 +0100 |
commit | dbed21e7c20d3f85d6edffe7cd25353af0569278 (patch) | |
tree | 3d3f4ce18fce7ab81b26bfe0c87a120e0ab2f6ce /uuid-tree.c | |
parent | 74f7b51c749d32f7001faa9492f42c99e42c3b37 (diff) |
btrfs-progs: Fix a buffer overflow causing segfault in fstests/btrfs/069
The newly introduced search_chunk_tree_for_fs_info() won't count devid 0
in fi_arg->num_devices, which will cause buffer overflow since later
get_device_info() will fill di_args with devid.
This can be trigger by fstests/btrfs/069 and any operations needs to
iterate over all the devices like 'fi show' or 'dev stat' while
replacing.
The fix is do an extra probe specifically for devid 0 after
search_chunk_tree_for_fs_info() and change num_devices if needed.
Reported-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com>
Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: Gui Hecheng <guihc.fnst@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
Diffstat (limited to 'uuid-tree.c')
0 files changed, 0 insertions, 0 deletions