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| author | Yan, Zheng <zyan@redhat.com> | 2014-10-14 15:38:01 +0800 |
|---|---|---|
| committer | Sage Weil <sage@redhat.com> | 2014-10-14 12:57:05 -0700 |
| commit | 0bc62284ee3f2a228c64902ed818b6ba8e04159b (patch) | |
| tree | 57217cc15af14a00b0ac6adaede8fd7a819c5c0f /fs/ceph | |
| parent | 792c3a914910bd34302c5345578f85cfcb5e2c01 (diff) | |
| download | linux-0bc62284ee3f2a228c64902ed818b6ba8e04159b.tar.gz linux-0bc62284ee3f2a228c64902ed818b6ba8e04159b.tar.bz2 linux-0bc62284ee3f2a228c64902ed818b6ba8e04159b.zip | |
ceph: fix divide-by-zero in __validate_layout()
The 'stripe_unit' field is 64 bits, casting it to 32 bits can result zero.
Signed-off-by: Yan, Zheng <zyan@redhat.com>
Diffstat (limited to 'fs/ceph')
| -rw-r--r-- | fs/ceph/ioctl.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/ceph/ioctl.c b/fs/ceph/ioctl.c index d7dc812a2249..f851d8d70158 100644 --- a/fs/ceph/ioctl.c +++ b/fs/ceph/ioctl.c @@ -41,7 +41,7 @@ static long __validate_layout(struct ceph_mds_client *mdsc, /* validate striping parameters */ if ((l->object_size & ~PAGE_MASK) || (l->stripe_unit & ~PAGE_MASK) || - (l->stripe_unit != 0 && + ((unsigned)l->stripe_unit != 0 && ((unsigned)l->object_size % (unsigned)l->stripe_unit))) return -EINVAL; |