Message ID | 20210818060533.3569517-49-keescook@chromium.org (mailing list archive) |
---|---|
State | Not Applicable |
Delegated to: | Netdev Maintainers |
Headers | show |
Series | Introduce strict memcpy() bounds checking | expand |
Context | Check | Description |
---|---|---|
netdev/cover_letter | success | Link |
netdev/fixes_present | success | Link |
netdev/patch_count | fail | Series longer than 15 patches |
netdev/tree_selection | success | Guessed tree name to be net-next |
netdev/subject_prefix | success | Link |
netdev/cc_maintainers | warning | 2 maintainers not CCed: ndesaulniers@google.com nathan@kernel.org |
netdev/source_inline | success | Was 0 now: 0 |
netdev/verify_signedoff | success | Link |
netdev/module_param | success | Was 0 now: 0 |
netdev/build_32bit | success | Errors and warnings before: 4 this patch: 4 |
netdev/kdoc | success | Errors and warnings before: 0 this patch: 0 |
netdev/verify_fixes | success | Link |
netdev/checkpatch | success | total: 0 errors, 0 warnings, 0 checks, 9 lines checked |
netdev/build_allmodconfig_warn | success | Errors and warnings before: 4 this patch: 4 |
netdev/header_inline | success | Link |
diff --git a/drivers/infiniband/hw/mthca/mthca_mr.c b/drivers/infiniband/hw/mthca/mthca_mr.c index ce0e0867e488..1208e92ca3d3 100644 --- a/drivers/infiniband/hw/mthca/mthca_mr.c +++ b/drivers/infiniband/hw/mthca/mthca_mr.c @@ -469,8 +469,7 @@ int mthca_mr_alloc(struct mthca_dev *dev, u32 pd, int buffer_size_shift, mpt_entry->start = cpu_to_be64(iova); mpt_entry->length = cpu_to_be64(total_size); - memset(&mpt_entry->lkey, 0, - sizeof *mpt_entry - offsetof(struct mthca_mpt_entry, lkey)); + memset_startat(mpt_entry, 0, lkey); if (mr->mtt) mpt_entry->mtt_seg =
In preparation for FORTIFY_SOURCE performing compile-time and run-time field bounds checking for memset(), avoid intentionally writing across neighboring fields. Use memset_startat() so memset() doesn't get confused about writing beyond the destination member that is intended to be the starting point of zeroing through the end of the struct. Cc: Doug Ledford <dledford@redhat.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: Max Gurtovoy <maxg@mellanox.com> Cc: linux-rdma@vger.kernel.org Signed-off-by: Kees Cook <keescook@chromium.org> --- drivers/infiniband/hw/mthca/mthca_mr.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)