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| author | Ilya Dryomov <ilya.dryomov@inktank.com> | 2013-12-24 23:19:24 +0400 |
|---|---|---|
| committer | Ilya Dryomov <ilya.dryomov@inktank.com> | 2013-12-31 22:32:10 +0400 |
| commit | b3b33b0e43323af4fb697f4378218d3c268d02cd (patch) | |
| tree | a66facb833b060476439c9988b81311e827c35c6 /include/linux/crush | |
| parent | 2b3e0c905af43cfe402a2ef3f800be5dc1684005 (diff) | |
| download | linux-b3b33b0e43323af4fb697f4378218d3c268d02cd.tar.xz | |
crush: pass weight vector size to map function
Pass the size of the weight vector into crush_do_rule() to ensure that we
don't access values past the end. This can happen if the caller misbehaves
and passes a weight vector that is smaller than max_devices.
Currently the monitor tries to prevent that from happening, but this will
gracefully tolerate previous bad osdmaps that got into this state. It's
also a bit more defensive.
Reflects ceph.git commit 5922e2c2b8335b5e46c9504349c3a55b7434c01a.
Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com>
Reviewed-by: Sage Weil <sage@inktank.com>
Diffstat (limited to 'include/linux/crush')
| -rw-r--r-- | include/linux/crush/mapper.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/crush/mapper.h b/include/linux/crush/mapper.h index 5772dee3ecbf..69310b031875 100644 --- a/include/linux/crush/mapper.h +++ b/include/linux/crush/mapper.h @@ -14,6 +14,6 @@ extern int crush_find_rule(const struct crush_map *map, int ruleset, int type, i extern int crush_do_rule(const struct crush_map *map, int ruleno, int x, int *result, int result_max, - const __u32 *weights); + const __u32 *weights, int weight_max); #endif |