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| author | Kent Overstreet <kent.overstreet@gmail.com> | 2019-10-02 09:14:32 -0400 |
|---|---|---|
| committer | Kent Overstreet <kent.overstreet@gmail.com> | 2019-10-02 11:08:24 -0400 |
| commit | 047219de92237916b34ca4a3d5ae2b0e10c30f59 (patch) | |
| tree | dcefbdda0b3997d65f70bf17d6193d03b145b57d | |
| parent | c9870bdd6527f34609966433efc7db2d726c611c (diff) | |
bcachefs: Fix undefined behaviour
roundup_pow_of_two(0) is undefined
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
| -rw-r--r-- | fs/bcachefs/ec.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/bcachefs/ec.c b/fs/bcachefs/ec.c index 05b680c9cf79..740d3ef71209 100644 --- a/fs/bcachefs/ec.c +++ b/fs/bcachefs/ec.c @@ -1351,6 +1351,9 @@ int bch2_ec_mem_alloc(struct bch_fs *c, bool gc) if (ret) return ret; + if (!idx) + return 0; + if (!gc && !init_heap(&c->ec_stripes_heap, roundup_pow_of_two(idx), GFP_KERNEL)) |