diff options
| author | Leon Romanovsky <[email protected]> | 2018-04-23 17:01:52 +0300 |
|---|---|---|
| committer | Doug Ledford <[email protected]> | 2018-04-27 11:03:15 -0400 |
| commit | b4bd701ac469075d94ed9699a28755f2862252b9 (patch) | |
| tree | bbcf8bcc82f8834189da42cd1406dfa7d3e810f3 /net/switchdev/switchdev.c | |
| parent | dc5640f294e4ff6b89047cb4a0dfa931d5f0cd1f (diff) | |
RDMA/mlx5: Fix multiple NULL-ptr deref errors in rereg_mr flow
Failure in rereg MR releases UMEM but leaves the MR to be destroyed
by the user. As a result the following scenario may happen:
"create MR -> rereg MR with failure -> call to rereg MR again" and
hit "NULL-ptr deref or user memory access" errors.
Ensure that rereg MR is only performed on a non-dead MR.
Cc: syzkaller <[email protected]>
Cc: <[email protected]> # 4.5
Fixes: 395a8e4c32ea ("IB/mlx5: Refactoring register MR code")
Reported-by: Noa Osherovich <[email protected]>
Signed-off-by: Leon Romanovsky <[email protected]>
Signed-off-by: Doug Ledford <[email protected]>
Diffstat (limited to 'net/switchdev/switchdev.c')
0 files changed, 0 insertions, 0 deletions