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| author | Sage Weil <sage@inktank.com> | 2012-08-21 12:11:51 -0700 |
|---|---|---|
| committer | Sage Weil <sage@inktank.com> | 2012-08-21 15:55:28 -0700 |
| commit | 45f2e081f573526977abfa781a12728f83e9641f (patch) | |
| tree | 0335f7ad27ed8506504201a5e558126b2ede058f /fs/stack.c | |
| parent | 6d4221b53707486dfad3f5bfe568d2ce7f4c9863 (diff) | |
| download | linux-45f2e081f573526977abfa781a12728f83e9641f.tar.bz2 | |
ceph: avoid divide by zero in __validate_layout()
If "l->stripe_unit" is zero the the mod on the next line will cause a
divide by zero bug. This comes from the copy_from_user() in
ceph_ioctl_set_layout_policy(). Passing 0 is valid, though (it means
"do not change") so avoid the % check in that case.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Sage Weil <sage@inktank.com>
Reviewed-by: Alex Elder <elder@inktank.com>
Diffstat (limited to 'fs/stack.c')
0 files changed, 0 insertions, 0 deletions