diff options
| author |   Steven Luong <sluong@cisco.com> | 2021-09-14 07:07:17 -0700 |
|---|---|---|
| committer |   Damjan Marion <dmarion@me.com> | 2021-09-17 14:57:33 +0000 |
| commit | d26a582759a0e5cf36375479727c5d97ea4147ec (patch) | |
| tree | 7713c1631f3729d2ca6f1485e2bec3090a5c6fcf | |
| parent | 91db3538c923063f9ddc8e7bde8c8481372fe14a (diff) | |
memif: avoid double pool_put on a clib_file
When memif CP processes the socket connection error, it may go through
the following code paths which may eventually cause double pool_put on a
clib_file
memif_master_conn_fd_error:633 -> memif_disconnect ->
memif_socket_close -> memif_file_del_by_index ->
clib_file_del_by_index -> clib_file_del -> pool_put
After memif_master_conn_fd_error:633, the code continues on
memif_maser_conn_fd_error:651 -> memif_file_del -> clib_file_del ->
pool_put
The fix is to skip calling memif_file_del in
memif_master_conn_fd_error:651 if uf->file_descriptor == ~0 to catch
problem from all possible paths in memif_master_conn_fd_error
Type: fix
Signed-off-by: Steven Luong <sluong@cisco.com>
Change-Id: I0960998db1ff358a8ddd4a5e22188a244eccd270
| -rw-r--r-- | src/plugins/memif/socket.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/plugins/memif/socket.c b/src/plugins/memif/socket.c index 5a381a7c7cd..d9748119302 100644 --- a/src/plugins/memif/socket.c +++ b/src/plugins/memif/socket.c @@ -648,7 +648,8 @@ memif_master_conn_fd_error (clib_file_t * uf) memif_log_warn (0, "Error on unknown file descriptor %d", uf->file_descriptor); - memif_file_del (uf); + if (uf->file_descriptor != ~0) + memif_file_del (uf); return 0; } |